Scott Fluid Circuit System Engineering Essay

 


To measure the major head losses of the fluid using Scott Fluid Circuit System. As well as, analyzing the relation between the pressure, velocity and the friction arising from the flow.


In this lab, an approach of Reynolds theory was used to determine the head loss within the flow of the fluid suing Scott fluid circuit. The Experiment was conducted using two different sizes of pipes which were ¾ in and 1 in.


For the ¾ in, the moody chart was referred for the value of friction factor using the roughness and the Reynolds no. The Roughness curve does tend to close out at Reynolds number = 10^5 after which the curve analysis is required to determine the appropriate friction factor. The experiment did conclude the least possible % error for the venturi meter height of 5.25 inches. Other errors does tend to describe the error in the analysis of the data or some other elements factoring the data collection.


According to Reynolds, there are two types of pipe flows:


Laminar Flow


Turbulent Flow


Laminar flows are low in velocity and the fluid particles move in a straight line. Whereas, the turbulent flows are high in velocity and motion of the fluid particles are irregular.


As the fluids are viscous, they lose energy when flowing due to friction. The Pressure loss due to friction is termed as the head loss.


The Flow Rate, Q; Q1 = Q2 = Constant


Or, V1 = V2 = Constant


Change in the Pressure and Gravity can be equated to the head loss, i.e,


Head loss due to friction is in a circular pipe, flowing laminar or turbulent flow for


f=friction factor


L=length of pipe


D=diameter of pipe.


?= Kinematic viscosity


And for the Reynolds number , Re = V*D / ?


e, which is the roughness coefficient related to the roughness of the walls.


And referring to the moody chart relates to the roughness e and the Reynolds number for determining the friction factor, (f).


Manometer


Rotometer


Pump


Venturi Tube


Make sure all equipments are clean.


Task is divided into separate group.


Make sure that the system valves are closed, i.e. If the pipe flow with diameter ¾ inches is used, make sure that the valves other pipes are closed. This way there will be no leakage in the system.


Recording the pressure levels and make sure that there is no back pressure build in the pump and that all flow is continuous.


Sample calculation using major ¾ inches


First convert ?P in inches to ft:


Flow rate = Q =


Flow Rate = Q =


Flow Rate = Q = 0.018364 ft3 / sec


Converting Flow Rate from (ft3 / sec) to (gallons / minute)


448.8311688 ft3/s/g/m * .015 ft3/s = 8.242475 gallons / minute


Velocity = Flow Rate / Area = Q / A = .015 ft3 / sec / .003360986 ft2 = 5.463979 ft / sec


Reynolds Number = (v * D) / ? = (4.556 ft / sec * 1.025 * 1 ft / 12 in) / (.000011 ft2 / sec) = 42428.63


Friction Factor = Recorded using Moody Chart = 0.0217


Head Loss = f * (L / D) * (V2 / 2 * g)


Head Loss = 0.0217 * (5 ft / 1.025 in * 1 ft / 12 in) * ((5.463979 ft/sec) 2 / 2 * 32.2 ft / sec2)


Head Loss = 0.58887 ft


Indicated Head Loss = 0.541667 ft


% Error = [Experimental value – Actual Value] / [Actual Value] * 100 %


% Error = [0.58887 – 0.541667] / [0.541667] *100 % = 8.714433 %


The data collected and calculated results do coagulate the equation, hf = f * (L / d) * (V2 / 2 * g), showing that pipe head loss equals the change in the sum of pressure and gravity head. Hence, it can be said that the friction factor is a function of the Reynolds Number, and hence the roughness factor is valid.



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Sun Energy Converted To Electricity Energy Source Engineering Essay

The sun's energy can be converted to electricity to give us a constant source of energy that can be tapped into without fear of power cuts, excessively high electricity bills and to ensure a clean and pollution free environment. This can be done with the help of photovoltaic cells in solar power plants set up especially for this purpose. The solar power plants have solar panels that are made up of numerous solar cells. A solar cell is a small disk made of a semiconductor type of material like silicon chips. They are attached to a circuit by electrical wires. As the sunlight hits the semiconductor, sun's energy in the form of light gets converted into electricity that forms a circuit and flows through the wires. The solar cells can only produce power in the presence of strong sunlight. When there is no light the solar cells stop producing electricity.

Solar batteries are fast becoming popular as a mode of conventional car fuel to help in the conservation of our environment and reduce carbon footprint. It minimizes the chances of being caught on the way with a dead battery and high bills for gasoline and other fuel. Green solar cars are being made popular by famous business house like Toyota, Panasonic, Venturi and others to promote awareness and create a favorable brand image. Federal and state governments also encourage the use of solar hybrid, eco friendly cars by initiating tax benefits.

The theory of solar energy conversion is a modern science that came into existence in 1970s. In order to cater to our ever growing energy needs, various studies have been undertaken in recent times to explore means of developing efficient solar energy conversing techniques. The amount of energy that comes on earth from the Sun is of astonishing quantum-in one second the Sun provides around 1017 joules of energy to Earth also it is equally surprising to know that the Sun provides as much energy to the Earth in one hour that humans need annually. The rate at which the Earth receives solar energy from Sun is 1.2 × 105 terawatts whereas the production rate of energy on earth by man-made techniques is merely 13TW. The quantum of solar energy though received by Earth is unprecedented but the same is not effectively used to cater the energy needs of the civilization. The non-renewable sources of energy like fossil fuels are still used as a major source to satisfy the energy requirements worldwide. Through the process of combustion fossil fuels are turned into useful energy but they tend to produce various greenhouse gases and other pollutants causing certain hazards to the environment. Various facts about solar energy cited below makes it more appealing than any other energy source:

wide availability

versatility

benign effect on the environment and climate

The untapped potential of the solar energy could be harnessed by conversion of solar energy into electricity. Today various studies on energy conversion based on nanomaterials focus on such conversion.

Listed below are the three methods used for the conversion of solar energy into electricity:

1. Solar Energy Cell

2. Solar Energy Collectors

3. Solar Energy Concentrators

The Solar Cells generally known as photovoltaic cells are used to convert sunlight into electricity directly, and the phenomenon is known as the photovoltaic effect. Photovoltaic batteries are made up of thin layers of semi-conducting material placed one above the other. Silicon is the most commonly used semi-conducting material used in photovoltaic cells. Now days, Solar panels have proved their utility in both the residential solar power generation as well as for utility scale power plants. When the surface of the cells faces the sun, the electrons absorb the solar energy in two different semiconductors which in turn creates the electric current.

Modules is a term used to refer to an array of photovoltaic cells that are grouped together for the purpose of creating an energy flow and they are capable of holding around 40 cells. In the process of generating electricity for a building at least 10 such modules need to be mounted together, the number of modules needs to be increased for generating electricity for big constructions like power plant. The 80 MW Sarnia Photovoltaic Power Plant in Canada, is the world’s largest photovoltaic plant.

This process is used to heat the buildings in winters. First of all solar panels are installed on the roof of the building. These panels along with heating up the building also heats up the water pipes being carried in it throughout thereby keeping the water heated up inside the building. The solar energy is therefore directly used to warm the water.

The two main components of a solar water heating system are: solar collector and a storage tank. Storage collector is a flat plated thin rectangular box facing the sun installed on the roof of the building. The solar energy heats up the absorber plate and in turn that heats up the water flowing through tubes inside the collector.

Solar power can also be converted into electricity indirectly through concentrated solar power (CPS).Under this method, mirror configurations are used to convert the solar energy into electricity. Various concentrating techniques are available which include the following:

Parabolic trough

Concentrating linear Fresnel reflector

Dish Stirling

Solar power tower

The parabolic trough technique is the most commonly used technique to collect the solar energy and use it to heat water. By using this technique the sunlight is focused onto a receiver pipe by using parabolic curved mirrors. The receiver pipe runs through the focal point of the curved surface. The working fluid in the pipes gets heated up and a conventional generator is used to produce electricity. The significance of this system lies in the fact that large area of sunlight is focused into a small beam by using lenses and mirrors. The troughs in the collector are aligned on a north-south axis to match the movement of the sun from east to west throughout the day.

The 354 MW SEGS Concentrated solar power plant is in California and is the largest power plant to harness solar energy in the world. Other CSP’s include the Solnova Solar Power Station (150 MW) and the Andasol Solar Power Station (100 MW); both these power stations are in Spain.

After the conversion of the solar energy into electricity it becomes imperative to have proper means to store it to have continuous supply of electricity even when the sunlight is not available. Broadly speaking the solar electricity could be stored either through integration with the grid of the utility company or providing solar batteries to bank the electricity.

This system of storage is used when electricity is being stored on a very large scale. The extra electricity generated in the peak hours get stored in the grid which can be withdrawn whenever required.

The need for storing the additional energy produced by the solar panels for later use necessitates the use of solar batteries. The solar battery stores the excess charge and helps to power a solar driven motor on days when direct sunlight may not be available or even during the night time. Commonly used types of batteries are the Lithium polymer, Lithium ion, Nickel-Cadmium, Nickel-Metal Hydride and the lead-acid batteries. The most efficient of these, however, are the Lithium polymer batteries. They store their electrolyte in an organic solvent state and are non-inflammable and safe to use.

When long power outages from the grid are predicted then battery bank is used to store the electricity produced from the solar energy. This mode of storage is as easy as hooking up the batteries to the transmission grid and the excess solar power can then be stored in the batteries. This is one of the most efficient ways to store power, because rechargeable batteries can store the excess electricity for a longer duration of time. When the solar-electricity is produced, it is sent to the batteries where it gets converted into chemical energy and is stored in a liquid form . At the time of retrieving the electricity from the battery, an electric charge is produced to trigger a chemical process to convert energy back in the form of electrons. Various types of batteries are available to store solar-electric energy and are used in different application areas:

Under Vanadium Redox Flow battery electrical energy is stored in two tanks of electrolytes or fluids that conduct electricity. Such batteries could be used as storage backup for a time span of 12 hours. These batteries could also be used in integrating solar power in a residential neighborhood or at several large industrial sites. At the time of energy requirement the liquid is pumped from one tank to another through a steady process after which the chemical energy from the electrolyte is transformed to electrical energy. During peak periods when there is maximum sunlight this process gets reversed and the excess energy gets stored in the battery. The size of the tank and its capacity to hold the electrolyte influences the quantum of energy that could be stored in the battery.

Under the sodium-beta alumina membrane battery sulfur and sodium are particularly used which serves the purpose of charging and discharging the electricity in/from the battery. The battery’s core is made up of aluminum oxide consisting of sodium ions. The battery is built in tubular design and has the capacity to store lots of energy in a small space. This battery is best suited for powering electric vehicles because of its high energy density, rapid rate of charge and discharge and short, potent bursts of energy.

However, as the battery operates at high temperatures it has been suggested to modify the shape of the battery in order to fix the safety issues and also to improve the efficiency.

Generally Lithium ion, or Li-ion batteries are used in household gadgets and electric vehicles. These batteries are made up of different elements like lithium, manganese and cobalt. These are best suited for transportation applications because of their high energy and power capacity potential .The battery works when positively charged lithium ions migrate through a liquid electrolyte, while electrons flow through an external circuit, both moving back and forth from one side to the other. This movement creates and stores energy.

The Lead-carbon batteries are usually used as back-up generators and in automobiles. Various studies have shown that the lifespan of the traditional lead-acid batteries can be improved by adding carbon in it. Also, such lead-carbon batteries have high concentrated power which makes them suitable for source for solar power. In a normal lead-acid battery, sulfuric acid reacts with the lead anode and cathode to create lead sulfate in the process of discharge. The process reverses during charge. With time the battery’s core gets filled up with lead sulfate due to crystallization. This process of crystallization can be prevented by adding carbon to the battery thereby enhancing the life of the battery.

The choice of using a particular battery from the above explained few depends upon the nature of application and the budget of the project.

A collection of connected 2-, 6-, or 12-volt batteries that supply power to the plant in case of outages or low production of electricity is known as a battery bank. In order to produce the current these batteries are wired together and a series is formed thereby producing 12-, 24-,or 48-volt strings. These strings are then connected together in parallel to make up the entire battery bank. The battery bank supplies DC power to an inverter, which produces AC power that can be used to run appliances. Factors like inverter’s input, type of battery selected amount of energy storage required determines the size of the battery bank.

At the time of installation of new battery, it is suggested to check its life cycle and the number of deep discharges it will be able to provide in future. Also the thickness of lead plates need to be checked upon as the life of battery depends upon the thickness of the plates.

The normal life of batteries is around 10-15 years irrespective of the amount of their usage as the acid in the battery wears down the internal components of the battery. In order to keep the battery working over its entire life following practices must be undertaken:

1. Deep discharging of batteries in repeated intervals must be avoided. The life of a battery is negatively correlated with the number of times it is discharged i.e. the more a battery is discharged, the shorter its lifetime. The other way out to fix this problem is by increasing the size of the battery bank .In order to support deep discharge of batteries every day , the size of battery bank must be increased.

2. Batteries must be stored at controlled temperatures. Rating for battery life is done only for temperatures between 70º-75º. If batteries are kept in temperatures warmer than this it reduces their life significantly. An effective way to heat a battery storage unit is by using passive solar power, but the battery storage unit must also be well insulated. Maintaining the temperature of the battery storage unit below 70º-75º will not extend their lives to any significant degree but will tend to reduce their capacity. Discharged batteries may freeze and burst, so maintain an adequate charge on the batteries in cold weather.

3. Maintain the same charge in all the batteries. Although the entire series of batteries may have an overall charge of 24 volts, some cells may have more or less voltage than neighboring batteries.

4. Inspection of batteries at regular intervals is also required to keep a track of leakage (buildup on the outside of the battery), appropriate fluid levels (for flooded batteries), and equal voltage.

The solar battery should have a constant voltage of approximately a hundred volts to be able to power the solar car engine. The battery pack comprises of several modules wired together. The higher voltage corresponds to better efficiency even though it requires a more complex array. The electronics controlling the power to the car include peak power trackers, the motor controller and data transmission system.



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Political Economy In Trade Related Participation History Essay

In order to examine the role of pre Hispanic political formation in of the Philippines and how it related to political economy, trade related participation, political transformation and social rankings are considered.

Chinese historical records are the world’s most comprehensive and complete written evidence of what the world has been since 1700 B.C. – 1046 B.C. It has been the works of Chinese historians and scholars who have documented China’s history and its association with other neighboring countries. Most commonly, China has traded with countries in Asia and the Southeast Asia, including the Philippines and has noted important aspects of Philippines trading system back to the pre Hispanic period. Coinciding with this claim, there has also been historical records of Philippines early people who engage themselves in trading with foreign countries such as China. So there has been a concession between China and Philippines that these two countries are openly trading during the pre Hispanic times. One notable feature that the Chinese historians have said about the Philippines is that the foreign trade system during that era has been strongly influenced by socio political system.

Since there has been no formal entity of a sustained and institutionalized state in the Philippines during the pre Hispanic period, tribes and chiefdoms are eminent to take that governing form. Philippine historical accounts says that in a social hierarchy of either a tribe or a chiefdom, only the people who belong to the elites are allowed to engage in trading. By this, we can see a highly centralized form of system wherein those in the higher class gets more privileges than those who belong to the lower classes of the social hierarchy. This denotes a very bureaucratic socio political system wherein people are bounded and restricted by the set of options provided only in their classes. The people who belong to the lower classes are restricted in foreign trade system but can engage themselves in local trading such as inter tribal or tribal to tribal trade system. In order for them to partake of the foreign commodities that are only the elites have, they will offer services to them in the form of working for their field, errands etc. in exchange for a small quantity of what they have asked.

Another feature that the Chinese traders and historians have noted about the Philippines is that most of its commodities are ornaments made out of gold, silver and copper. These were the primary merchandise that the Chinese would want to acquire. In exchange for these precious metals, garments and useful items are traded for the Philippine merchants. Also, included in the trade were animals, fruits and vegetables that are products of both countries. It is noticeable that smart trading exists during that time because people trade something for what they need. Survival has been the focal point of trading for the lower classes because it is a way for them to acquire what they need in everyday life. Hence, on the part of the rich and the elites, they trade because they wanted to get more out of what they have already gotten.

The type of socio political system during the pre Hispanic period has utterly favored the interest of the elite and the ruling class. It is only then by the time that the Spaniards have colonized the Philippines where there has been a clear distinction of what are the state and a society’s role in development. The evolution of the socio political system in the Philippines has been a long process toward the end of the pre Hispanic period.

Chiefdom is a kind of complex society wherein there is a varying level of centralization and is governed by a sole person known as a chief. Often described as a social organized group, it takes form of neither a simple tribe nor a complex state; rather, it is “an autonomous political unit comprising a number of villages or communities under the permanent control of a paramount chief” (Carneiro 1981: 45). Since inequality and centralization of authority exists in chiefdom, there are at least two divisions in their social classes, primarily the elites and the commoners. In some places, chiefdom has a social hierarchy with three to four divisions. The affluent people or those who have great influence, power and prestige in chiefdom belong to the elite class and everyone else fall in the category of a commoner. Although the distinction between classes is highly recognized in chiefdom, an individual might change social classification during his lifetime by extraordinary behavior. If a commoner, by chance get to have a fortune by any means, he will then be regarded as elite. Same as if a commoner would contribute for the betterment of the chiefdom in form of wealth or prestige, his social class will then be changed into elite. In line with this, the ruling class who also belong to the elites often than not inherit the rights to become a chief. A kinship runs in chiefdom for as long as there is a legitimate heir to the position. Chiefdom is generally composed of a central community where the chief lives and is surrounded by a periphery of smaller subsidiary communities who all recognize the authority of the sole chief.

Looking upon Philippine chiefdom during the pre Hispanic period, these characteristics were very prevalent. A number of chiefdoms have been recorded by historians namely the chiefdoms in Ifugao and Kalinga in Northern Luzon, Hanunoo in Mindoro Island, Sulod in Panay, Bukidnon, Maranao, Magindanao, Bagobo, Manuvu, Tiruray in Mindanao and Tausug in Sulu Archipelago. Ethnographic studies were focused mainly on the region of Mindanao where the biggest concentration of chiefdoms is eminent. Mindanao is considered as the country’s biggest island with a geographical specification of mountainous region and is home to indigenous tribes and ethnic group. Since the area is abundant with rich land resources such as fruits and vegetables and minerals like gold, silver and copper, the fight for territorial power amongst tribes is widespread. Tribes with more population, often than not, has the power to conquer a less populated tribe which will then be an extension of its territory. With the accumulation of more less powerful tribe, the winning tribe can now form chiefdom. Under the leader tribe, the sub tribes are ought to make and produce tributes to it. They must adhere to the paramount chief for them to be able to survive because when a sub tribe has not able to contribute something to the leader tribe; this calls for the expulsion of the sub tribe and banning them to consume resources within the territorial boundaries of the chiefdom.

Same as to the other parts of the Philippines, chiefdoms exhibit similar characteristics. It is only in Mindanao that chiefdoms are frequently discussed by researchers because unlike in the other parts of the country, Mindanao chiefdoms’ are mixed of Muslim and non Muslim tribes. Issues between Muslims have been long fought of even before Christianity has paved its way to the Philippine soil. Muslim chiefdom in Mindanao tends to fight non Muslim chiefdom because since then, they would want to separate themselves to the whole of the country, making the island independent and Muslim owned. This added more enthusiasm to the researchers because chiefdom has not only been the fight to conquer and expand territories but rather it is a struggle to show supremacy of beliefs, traditions and customs.

There have been a number of similarities between tribal and chiefdom in the Philippines that is why both are commonly mistaken to one another. Previous discussions have illustrated the characteristics of chiefdom and how it is different from a tribe. Chiefdom is distinct to a tribe because it is rather a collection or a group of tribe. But the system that runs between these two is almost the same. The political structure has been similar, although there has been some distinction between the social hierarchical systems. Through the years that chiefdom has been the governing body in the pre Hispanic Philippines, it has evolved itself from being a simple chiefdom to a more complex one and this is because of the factors that emerged along the process.

During the times of early chiefdom, it is characterized by a central community that is surrounded by other smaller communities who adhere and is under the prime community which is led by a sole chief. Through the years, since there is a number of chiefdom, there came a time where a complex chiefdom is formed. Compared to a single chiefdom, a complex chiefdom is a group or a collection of chiefdoms which is governed by a paramount chief. This paramount chief is the head of all the chiefs under the complex chiefdom. It means that the less powerful chief of certain chiefdom is under his control. The reason why this so called complex chiefdom existed is because of the rising number of small or weak chiefdom in the area. There has been power struggles between chiefdoms and as a result, they are expanding their territories, provoking a battle against the other chiefdoms. Usually, the chiefdom that succeeds is the one that has been a powerhouse from the start, meaning they have a numerous population, resources and the capability to launch an attack with a great chance of succeeding. The losing chiefdom in return will have no right to abstain the authority of the winning chiefdom, rather it must compel with it for as long as it is under its control.

Chieftainship abilities and characteristics are a very crucial part in deciding who would be is the next chief in chiefdom. One has to be from the elite class or those who have high reputation, wealthy and of a noble kinship. He must also be a committed leader with a strong will of sustaining his chiefdom. The possession of intelligence is important not only in tactics in warfare but also in running the community. Since he governs the chiefdom, he has the sole political power. The right to make laws and pass them is under his control. The power to make verdicts on cases is also his authority. In short, the chief has embodied himself the power of the legislature as he makes the laws of his chiefdom, executive as he pass the laws that he had made and the judiciary as he decides on what is right from wrong. But he chief cannot make this all by himself, he has a board of trustees who serves as his advisers on issues related to the running of the chiefdom and they belong to the nobles, particularly the chief’s relatives or in line with the kinship.

We can infer from the descriptions that were stated above that the political structure in chiefdom has been centralized, not only in the form of the complex one but also to the single and simple chiefdom. It is also noticeable that the supposed characteristics of a chief greatly resemble an ideal leader that chiefdom, community or a state would want to have. This has been the ground in choosing a qualified leader in the present and ever since the time of the pre Hispanic Philippines.

The political characteristics that a chief must obtain to have a well rounded governing power in his chiefdom has been stated in the previous section. But how does the chief get hold of his power and position to the society? This has been the question that the researchers have focused on and found a system that is quietly similar to the one that the monarchs in United Kingdom and other monarchs in the world who have adopted the same ideology.

It is clearly emphasized that before a chief can be placed on his position, he must have a noble kinship; therefore he must be from the ruling class or the elite. If for an instance the chief has died, the next in line would be is from his direct descendant, his son. We can see in here that only male can be a chief in chiefdom. For example, if the chief had died and he does not have a qualified male child but rather a female one, then the thrown will be directly given to his brother. There has been an instance in the Bagobo chiefdom wherein the chief died and he does not have a qualified son, brother or nephew left to take the position, then the kinship lost its power in line even if there were still females in their clan. So to retain the power in the clan of the chief, every male descendant must have at least one male offspring in his family. Also, since they are form the elite and more powerful class, male can marry a number of wives to ensure that someone has to seat form the thrown that will come from their clan.

The kind of hereditary system in the political cycle that has been inculcated in the system of chiefdom in the Philippines has been eminent not only in Asian countries who adopted governing systems with kings and emperors but also to the western early civilizations. It only connotes the idea that there is a tendency on people on early times to garner so much power in their hands to prolong their sovereignty in their territory.

Social ranks in Philippine chiefdom like the political leadership roles were traditionally fluid and dynamically created in constant interplay between genealogical manipulation and status competition through feasting, strategic marriages and trading. Archeological evidence is brought to bear on the evolutionary dynamics of Philippine social hierarchies which focuses on burial and settlement remains dated from the two millennia preceding European contract. The available settlement and burial evidence is consistent in recording increasing social status and wealth differentiation over time during the two thousand years of complex society formation in the Philippines (Junker, 2000). The archeological evidences for evolving wealth difference is meager for all periods of complex society development in the Philippines since pre Hispanic social organizations has not been a traditional focus of the archeological investigation.

Several studies suggested that the hereditary social ranks characteristics of chiefdoms can be recognized archeologically not only through differential access to objects of wealth that act as status symbols in domestic context but also through analyses of variation in mortuary practices (Beck 1995; J. Brown 1979; Chapman, Kinnes and Randsborg 1981).

In the case of the Philippine complex societies, there is a wide range of ethno historical literature that helps us evaluate what aspects of mortuary ritual and death related social exchanges might and might not be reflected in the material treatment of the deceased. In one of the discussions of Metacalf and Huntington on the role of mortuary ritual in complex societies of Southeast Asia (1991: 135 – 144) notes that extreme public display and wealth must be seen in the context of political systems with “cosmic pretention and chronic competition.” (p. 136)

In the Metal Age cemeteries, we could see that there are generally two discernable burial ranks which are then characterized by sharp distinctions in both the quantities and the quality of grave goods and mortuary treatment rather than graded differences along a relatively continuous scale. Most of the Metal Age burials are secondary urn burials or cremations but the catch is that there is a clear dichotomy between the exceptionally rich burials that elaborate earthenware vessels, metal goods and shell ornaments as grave accompaniments and the poor burials with few or even none of these goods. Moreover, the burials from the Early and Late Porcelain Period are considered more complex since it has many degrees in the diversity and numbers of grave accompaniments as well as in the form and labor requirements of the burial chambers.

Philippine chiefdoms become involve in long distance trade with China and other Southeast Asian political organizations. Chinese porcelain and other luxury goods from outside the archipelago have become the key symbols of social status and political power for the Philippine chiefly elite. The importance on overseas luxury goods in the Philippine political economies corresponded with the emergence of more organizationally complex and territorially expansive chiefdoms and kingdoms before the Spanish contract.

As a local demand for porcelains and other exotic goods it drastically expanded in the Philippines and a number of alternative sources for forest product exports grew after the fourteenth century and foreign traders shifted towards a mass production strategy in which massive cargoes of cheaply made porcelains are traded widely all over the archipelago.

Philippines restricted access to foreign luxury goods and maintained their social values as exclusive as the elite prestige goods through controlling the geographic venue and the social context of exchange. On the other hand, foreign trade monopolies are created by developing the port facilities and economic base in order to attract foreign vessels and then serve as profitable trade partners. Moreover, the Philippine chiefs that depended on foreign derived wealth as a major source of power and prestige only relied on a number of institutionalized mechanisms just to make sure that the access of these goods are exclusive. Philippine rulers also developed a strategy to monopolize foreign trade and to keep the foreign goods from circulating the alliance networks of their political rivals.

The additional production needed for sustain the chief’s household and elite followers are obtained not through direct ownership of lands within a fixed geographic territory but instead through the development of clientage relationships that granted a chief the right to collect agricultural tribute from political subordinates. Philippine chiefs in general did not strengthen additional production through investment in hydraulic systems, large-scale terracing, or other technological improvements but instead grabbed additional labor through increased slave prowling, expanded tribute flow through increasing the labor burdens of subordinates and encouraged agricultural colonization of adjacent forest lands.

The textile industry is one in which the Philippines has long acted as an exporter. The early Spanish noted that the Filipinos knew had to raise, spin and weave cotton and silk. Lace-making and embroidery were widely practiced often with superb results. Besides cotton, abaca fiber and banana leaf fiber was also used. The native silk was known as pina. The woven works of the Philippines, particularly from the Muslims and animists of the South are now receiving long overdue attention from the international community.  

In traditional Philippine society, the importance of specialists with particular skills was emphasized by the bestowal of the title 'panday,' in recognition of mastery of an art, an applied science. They performed unique roles in their communities' struggle with nature; they attended to the birth of valued functional and ritual objects. In western Mindanao languages, midwives are called panday. Skills in various materials were specified: there was the panday-anluwagi (builder-carpenter), panday-bakal(blacksmith), or panday-ginto (goldsmith).

Natives of gold mining areas would have had several options, as shown by the career of contemporary artisan and National Craftsman Arcilla of the town of Paracale, in the province of Camarines Norte. The name of the southern Luzon town is derived from kali, or gold pit-mining. From a landowner he acquired mining rights, for a fixed monthly rental plus 10 per cent of the metal yield. He opened the land to diggers on condition that he would have first option to buy the gold. At the same time, he trained and organized goldsmiths and paid a fixed rate for their labor, based on the weight of the finished pieces. He sold raw material for a marginal gain, and finished pieces in Manila for a larger profit. Even the landowner's share is worked by him. He has bought his own parcels of gold-bearing land; to be worked on later similar arrangements may have been entered into in prehispanic times.  

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Carneiro, Robert. 1981. The chiefdom as precursor state. In G. Jones and R. Krautz, eds., The Transition to Statehood in a New World, pp. 37-39. Campbridge University Press.

Clark, John E., and William J. Parry. 1990. Craft specialization and cultural complexity. Research in Economic Anthropology 12:289-346.

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Gullick, John M. 1958. Indigenous Political Systems of Western Malaya. London: Athlone Press. 1st edition.

Hall, Kenneth. 1985. Maritime Trade and State Development in Early Southeast Asia. Honolulu: University of Hawaii Press.

Junker, L.L. 1990a. Long-distance trade and the development of socio-political complexity in Philippine chiefdoms of the first millennium to mid-second millennium A.D. Ph.D. dissertation, University of Michigan, Ann Arbor.

1990b. The organization of intra-regional and long-distance trade in pre-Hispanic Philippine complex societies. Asian Perspectives 29 (2): 167-209.

Peregrine, Peter. 1991. Some political aspects of craft specialization. World Archeology 23 (1): 1-11.

Winzeler, Robert. 1976. Ecology, culture, social organization and state formation in Southeast Asia. Current Anthropology 17: 623-624.



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Seismic Analysis Of Steel Concrete Engineering Essay

 


Now a day’s earthquakes are very frequently occurred and maximum loss of life and loss of property occurred due sudden failure of the structure, therefore special attentions are required to evaluate and to improve the seismic performance of multistoried buildings. Hence in this paper the seismic analysis of G+4 story office building is carried out using composite structure in which composite beams (RCC slab rest over steel beams) and composite columns (encased composite columns) are used. The 3-D model static analysis is carried with the help of advanced analysis software (SAP software) according to codal provision by considering different load combination. The results obtained from this type of structure are compared with results of same R.C.C. structure to describe earthquake resistant behavior and performance of the structure.


Such type of constructions has many advantages like high strength, high ductility and stiffness, ease in erection of high rise buildings, fire resistance, and corrosion resistance and helps to achieve modern trend in architectural requirement.


KEY WORDS


Composite structure, problem, composite beams, encased composite column, earthquake analysis, codal provision, different load combination, comparison with RCC building.


INTRODUCTION


In India, earthquakes occurrence have been increased during last few years and it has been studied that maximum loss of life and property occurred due to sudden failure of structure. In composite construction economy of the construction and proper utilization of material is achieved. The numbers of structures are constructed using composite structure in most of the advanced countries like Britain, Japan and America but this technology is largely ignored in India despite its obvious benefits (1).


In composite structure the advantage of bonding property of steel and concrete is taken in to consideration so that they will act as a single unit under loading. In this structure steel is provided at the point where tension is predominant and concrete is provided at the point where compression is predominant. In conventional composite construction, concrete rests over steel beam (2), under load these two component acts independently and a relative slip occurs at the interface of concrete slab and steel beam, which can be eliminated by providing deliberate and appropriate connection between them. So that steel beam and slab act as composite beam and gives behavior same as that of Tee beam. In steel concrete composite columns both steel and concrete resists external loads and helps to limit sway of the building frame and such column occupies less floor area as compared to reinforced concrete columns. The number of studies related to economy of the composite construction shows that the composite construction are economical, light weighted, fire and corrosion resistant and due to fast track construction building can be utilize or occupied earlier as compared to reinforced concrete structure(3).


In this paper an office building considered and seismic analysis is carried using composite beam (RCC slab rest over steel beam), encased composite column (concrete around Hot Rolled steel I section) and the results obtained from this type of structure are compared with the results of same RCC structure.


EXAMPLE OF BUILDING


The building considered is the office building having G+4 stories. Height of each storey is 3.5m. The building has plan dimensions 24 m x 24 m, which is on land area of about 1200 sqm and is symmetric in both orthogonal directions as shown in the figure 1. Separate provisions are made for car parking, security room, pump house and other utilities. However they are excluded from scope of work. The building provision is made for 180 employees and considered to be located in seismic zone III built on hard soil. In composite structure the size of encased composite column is 450mm x 450mm (Indian standard column section SC 250+ 100mm concrete cover), size of primary composite beam is ISMB 450 @72.4 Kg/m and size of secondary composite beam is ISMB 400 @61.6 Kg/m. Here channel shear connector ISMC 75 @ 7.14 Kg/m are used. Concrete slab rest over steel beam having thickness of about 125mm. The unit weights of concrete and masonry are taken as 25 kN/m3 and 20 kN/m3 respectively. Live load intensity is taken as 5 kN/m 2 at each floor level and 2 kN/m2 on roof. Weight of floor finish is considered as 1.875 kN/m2 (4). In RCC structure the size of column is decided by taking equivalent area of encased composite column that is 400mmx 700mm; size of primary beams is 300mm x 600mm and secondary beams is 300mm x 450mm with slab thickness is about 125mm. The unit weights of concrete and masonry are taken as 25 kN/m3 and 20 kN/m3 respectively. Live load intensity is taken as 5 kN/m 2 at each floor level and 2 kN/m2 on roof. Weight of floor finish is considered as 1.875 kN/m2. In the analysis special RC moment-resisting frame (SMRF) is considered.


MODELLING OF BUILDING


The building is modeled using the software SAP 2000. Beams and columns are modeled as two noded beam element with six DOF at each node. Slab is modeled as four noded shell element with six DOF at each node. Walls are modeled by equivalent strut approach (5). The diagonal length of the strut is same as the brick wall diagonal length with the same thickness of strut as brick wall, only width of strut is derived. The strut is assumed to be pinned at both the ends to the confining frame. In the modeling material is considered as an isotropic material.


2.1 Shell Element


Slab modeled as shell element of 125mm thickness having mesh of 1mx1m of this shell element. Material used for shell element is M25 grade cement concrete in both composite and RCC structure


2.2 Beams


In composite structure beams are steel I section from IS code and steel table. The length of each beam is divided into small parts of 1m intervals and connected with concrete slab so as to get composite action. In RCC the length of each concrete beam is divided into small parts of 1m intervals and connected with concrete slab so as to get behavior same as that of Tee beam action.


2.3 Columns


In composite structure column is modeled by giving section properties of both steel and concrete to the software. Also in RCC structure column is modeled by giving sectional properties to the software


ANALYSIS OF BUILDING


Equivalent static analysis is performed on the above 3D model. The lateral loads are calculated and is distributed along the height of the building as per the empirical equations given in the code (IS 1893:2002). The building modeling is done then analyzed by the software SAP 2000. The bending moment and shear force of each beam and column are calculated at each floor and tabulated below.


RESULTS AND DISCUSSION


4.1 Results of Composite Structure:


Floor Level


Max. Shear Force


(kN)


Max. Bending Moment (kN-m)


+ve B M


-ve B M


Plinth Level


73.32


19.64


168.6908


1


177.925


134.31


306.1174


2


175.075


132.34


299.477


3


165.571


132.34


274.038


4


153.64


132.39


236.546


Roof Level


65.59


82.15


125.52


Table 1: Bending Moment and Shear Force of Beam


4.2 Results of RCC Structure:


Floor Level


Max. Shear Force


(kN)


Max. Bending Moment (kN-m)


+ve B M


-ve B M


Plinth Level


115.00


62.45


230.42


1


244.772


177.96


449.82


2


236.744


183.89


418.69


3


223.675


175.28


380.04


4


207.023


174.63


324.58


Roof Level


119.83


115.1004


181.00


Table 2: Bending Moment and Shear Force of Beam


4.3 Results of Composite Structure:


Column No.


Max. Axial Force (kN)


Max. Shear Force (kN)


Max. Bending Moment


(kN-m)


Column-1


1462.307


83.868


251.1801


Column-2


2865.903


101.64


271.4602


Column-3


2828.667


100.091


269.33


Column-4


2865.903


101.64


271.46


Column-5


1462.307


83.87


251.18


Table 3: Axial Force, Shear Force and Bending Moment of Column


4.4 Results of RCC Structure:


Column No.


Max. Axial Force (kN)


Max. Shear Force (kN)


Max. Bending Moment


(kN-m)


Column-1


2453.516


148.942


495.89


Column-2


3526.32


161.64


510.50


Column-3


3538.64


160.995


509.61


Column-4


3519.463


161.83


511.142


Column-5


2455.27


149.047


496.432


Table 4: Axial Force, Shear Force and Bending Moment of Column


From above results of bending moment and shear force of composite structure and RCC structure it is found that bending moment and shear force for composite structure


are less than RCC structure. Hence the cross section area of section and amount of steel for structural element reduced in composite structure than RCC structure so that large space meets for utilization.


CONCLUSIONS


In this paper a three dimensional model is analyzed using SAP 2000 software in terms of the structural characteristics of encased composite column and composite beam. It is concluded that:


The dead weight of composite structure is found to be 15% to 20% less than RCC structure and hence the seismic forces are reduced by 15% to 20%. As the weight of the structure reduces it attracts comparatively less earthquake forces than the RCC structure.


The axial force in composite columns is found to be 20% to 30% less than RCC columns in linear static analysis.


The shear force in composite column is reduced by 28% to 44% and 24% to 40% in transverse and longitudinal directions respectively than the RCC structure in linear static analysis.


The bending moment in composite column in linear static analysis reduces by 22% to 45%.


In composite beams the shear force is reduced by 8% to 28% in linear static analysis.


It also provides fire, corrosion resistance, sufficient strength, ductility and stiffness.


Hence Composite structure is one of the best options for construction of multistory building as well as for earthquake resistant structure.



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Suitable For Harnessing Solar Energy Engineering Essay

 


There are several projects like photovoltaic cell in solar panels, solar power concentrator and parabolic dishes devised to harness solar energy in India. These plans prove very fruitful in south eastern parts of India in Tamil Nadu, Karnataka, northern plains in Uttar Pradesh, Bihar, western part of India in Rajasthan and parts of Gujarat. In short, those places which have annual average temperature of more than 25°C are suitable for utilizing this energy into usable power.


In this project we have tried to put up a new way of converting electrical energy directly into mechanical energy without any use of solar cell or mirrors. The idea is supposed to be simple as there is no involvement of dedicated machinery or setup and practically no running cost.


The basic idea lies in the structure and way of using solar energy. In this project, the aim is to convert solar energy into kinetic energy of wind and then use this wind for purposes like rotation of turbine or for any other mechanical work. The basic principle involved is that the heated air is lighter than the cold air. If air gets heated near the surface of earth, then it tries to move up into atmosphere and replace the position of cold air from surrounding. The heated air which moves up, acquires a kinetic energy while moving and can be used to rotate the blades of turbines, if stroked with pressure.


The structure consists of a metallic dish made up of aluminium in which the distance between two diametrically opposite points is 20 meters which has a hole in its centre and is placed on supports such that its outer boundary lies at a distance of 3 meters from ground level. Eight rods made of iron are used as a support, which are inserted in the ground. A frustum shaped pipe with a nozzle at the upper end and lower diameter of 1 meter is used to impart the hot air up to the blades of turbine and a iron pipe of lower diameter 1 meter and length of about 10-15 meters is used to hold this nozzle and turbine. The dish must be designed in such a way that its centre lies 1 meters high from its outer boundary, that is, it forms the shape of a big umbrella roof as shown in figure.


WORKING:


This structure helps us to direct all heated wind toward the centre of the dish and no air is escaped from the outer boundary of dish. The heated air when passed through the centre of dish, tries to move through the thin pipe which further has a nozzle at the end. So the escaping wind moves like a high speed stream in that pipe just like steam as it passes in the thermal power plant, strikes the blade of the turbine which is just in front of nozzle and transfers its momentum and ultimately the blade moves and the next blade comes in place of previous one. Due to the continuous flow of hot air, the turbine starts rotating and hence the connected shaft also starts delivering mechanical output. The cold air moves inside from the bottom of dish and take the place of hot air, gets heated and moves up and thus the cycle continues, and we get mechanical power in the form of rotating shaft of turbine which can be used either to generate electricity, which is our main requirement or in other forms as well, where we need mechanical power, like in pumps or other mechanical machines.


The main difference in this solar power set up and other plants utilizing the same energy is that here we get mechanical energy as the outcome and we can use it in numerous ways but in other projects, like in solar panels and rotating dish we get electrical energy only, this is quite an advantageous part of this project. The other advantage of this project is that we can use the hot air produced through this installation for various other plants and industrial applications like, in drying operation in chemical industries, heat exchangers and preheating of water in thermal power plants and at domestic level it can be used for room heating, driers and water heating which will greatly reduce the domestic power consumption as power consumption in water heating accounts for about 30% of electricity bill and thus this heated gas helps to minimize the electric consumption.


The problem lies in the efficiency of the turbine used, that is, nowadays the turbines manufactured are good for higher speed stream wind but in our model we need a better and lighter turbine which rotates with greater r.p.m with the given speed of wind. As the power output and mechanical work, both depend upon the r.p.m of the rotating shaft so it should be high and for increasing the r.p.m there must be an improvement in our present technology, in the sector of turbine design and material science for improving the quality of materials used for turbine design. The existing industry products require a minimum wind speed of 25 km/hr for production of 10 MW of power, thus we have to improve our technology to reduce this speed.


The other possible disadvantage of this project which is common for most of the solar plants is that, it will not work at night or in rainy seasons. As there will be lesser chances of availability of sun in those periods, hence less heated air production and consequently reduction in movement of air, so power production would get a pause for this period. The idea of storage of energy in rechargeable batteries might prove useful for those periods. There must be regular supervision and checking of the dish to prevent the development of holes and cracks in it, as it would greatly reduce the efficiency of the system by leaking the air. The overall performance would also be greatly affected.


COST, INVESTMENT AND RETURN:


Surface Area of Dish can be calculated as:


(X + 1)2 = 102 + X2


(X2 + 1 +2.X) = 100 + X2


2X = 99


X = 49.5 m


Hence, Radius = 50.5 m


Sin? = (10/50.5)


? = Sin-1(10/50.5)


? = 11.42o


Hence, the ends of the dish make an angle of (2 x 11.42) = 22.84o


Therefore, the Surface area of dish = (?/360) x 4p x (Radius)2


= (22.84/360) x 4 x (22/7) x (50.5)2


= 2034 m2


Since, Thickness of dish =3mm


Therefore, Volume of dish =2034 X.003=6.102 m3


Surface area of circular pipe = p X Diameter of pipe X Height of pipe


=3.14 X 1 X 10m


=31.4 m2


Thickness of Pipe = .005 m


Volume of material used in pipe= 31.4 X .005=0.157 m3


The cost analysis is done by discrete method, that is, by quantizing various costs as follows:


a) Cost of dish= (area of dish) X (thickness of plate) X (Density of metal) X cost of metal per kilogram = 2034m2 X .003 m X 2700kg/m3 X Rs130/kg = Rs 2142000


b) Cost of eight supports= 8 X 3 m X cost per meter of support= 24 X 3 m X Rs 150/m =Rs 10800


c) Cost of pipe= (curved surface area of pipe) X cost of sheet = 31.4 m2 X Rs 200/m2 = Rs 6280


d) Cost of nozzle and frustum = Rs 10000


e) Cost of turbine, blades and shaft= Rs 0.5 million


f) Labour charge= Rs 3 million


g) Maintenance cost and land rent= Rs 1 million


h) Miscellaneous charge= Rs 2-2.5 million rupees


TOTAL expected cost = Rs8.6 million


RETURN ANALYSIS:


In Indian scenario we have almost 300 clear sunny days and on an average 10 hours of bright sunlight available so we can calculate the power output in kilowatt hour as


300 X 10 X 60 X 60 X 10 MW/3.6 X 106


=3 x107 KWh of power


Expected sales rate = Rs 2 per unit


Total expected annual return = Rs 60 million


Expected annual profit: Rs 51 million


After analysing the cost and return, it is found that this project remains profitable over the year and gives a profitable return in the summer season.


EFFECT OF GOVERNMENT INCENTIVES:


The Government of India has a very positive and supportive approach towards the solar power. It provides manufacturers and users of commercial and near commercial technologies, with ‘soft’ loans on favourable terms through the IREDA (Indian Renewable Energy Development Agency). The RBI (Reserve Bank of India) terms the renewable energy industry as “Priority Sector”, and has permitted Indian Companies to accept investment under the ‘automatic route’ without obtaining prior approval from RBI.


The Govt of India also provides exemptions/concessions in the excise tax duty on the manufacture of the solar energy systems and devices such as flat plate solar collectors, solar water heater and systems and any specially designed devices which operate those systems. Their incentives include concession on custom duty, 10 year tax holidays and sales and electricity tax exemption and preferential tariffs. It also includes capital subsidies.


The financial assistance of the Central Government is one of the factors which are highly helpful in the solar power market. It provides up to Rs 50 lakhs per city for a period of 5 years, Rs 20 lakhs for awareness generation, capacity building and other promotional activities, Rs 10 lakhs for preparation of a master plan, setting up institutional arrangements, oversight of implementation during the period of 5 years respectively.


The State Electricity Regulatory Commission has been mandated to source up to 10% of their power from renewable energy sources.


The Government based incentives also provide INR 0.5/ KWh of power sold, for independent power producers with capacity >5MW, for the projects that don’t claim accelerated depreciation benefits.


The State Government has set a remunerative price under power purchase policy for the power generated through solar energy system, fed to the grid by private sector. It also has provisions and policy packages including banking, third party sale and buy-back of solar energy power. The State Government also encourages NGO’s and small entrepreneurs for their participation in solar power market.


In a nutshell, the Indian government provides its support to a larger extent for the development of a sustainable solar power market.


SOLAR POWER MARKET:


India has seen only modest pace of growth , relative to demand , in solar power generation. This has resulted in persistent supply shortages for both urban and rural customers. The main customers of solar power generation market include homeowners, businesses and utility companies.


The demand for electricity in developing countries is growing at a fast pace. The potential worldwide market for solar power over the next 20 years is estimated at 600 GW or 6000 plants of 100 MW solar capacities, most of this in developing countries like India.


Over the next 20 years, It is predicted that there will be actual installations of 45 GW or over twenty 100 MW solar capacity plants per year, assuming niche markets could allow for a 7.5% penetration rate. The actual penetration rate will depend on progress in reducing the cost/performance ratio, support from governments (and the GEF), and energy prices.


The above graph represents the daily utility load profiles for four developing countries: India, Jordan, Egypt and Mexico. The values for India are the average of three regions. After analyzing the above graph, one can forecast that the solar power has a great future in developing countries; hence this plan can be promising for India as it has its maximum consumption in day time so we can rely on this type of setups for our energy needs.


In 2008, the cumulative Solar power capacity was 15 GW. Growth in recent years has been 15% per year. There are estimated 40 million households (2.5% of the total) which were using solar power worldwide in 2004.


China is the leader; 10% of Chinese households use solar power; the target for 2020 being 30%.


In 2008, 65.6% of existing global solar power capacity was in China; followed by European Union (12.3%), Turkey (5.8%), Japan (4.1%) and Israel (2.8%). The Indian share was 1.2%.


The estimated break up of solar power installations in India (till 2009) is as follows:


Residential (80%)


2.108


Hotels (6%)


0.158


Hospitals (3%)


0.079


Industry (6%)


0.158


Other (Railway + Defence + Hostel + Religious places,


other) (5%)


0.132


2.635


The main factors contributing the demand rise in recent years are


• Growth in new urban housing; rising disposable income; increased propensity for consumer durables


• Arrival of ETC & improvements in supply chain


• Energy price hike


• Policy initiatives


According to a survey, five states will lead demand-expansion, as is evident from the following table:


Karnataka


3.72


0.16


3.88


Maharashtra


3.5


0.31


3.80


Tamil Nadu


1.53


0.14


1.67


Andhra Pradesh


1.08


0.09


1.17


Gujarat


0.9


0.06


0.96


%age of 5 states


67.1%


Analysis of demand at the district level shows that a large part of the demand would come from selected urbanized districts. Some of the key districts (out of the 29 surveyed districts) which have large potential for solar power generation market are Bangalore, Pune, NCR, Thane, Hydrabad, Nagpur, Kolkata, Chennai, Coimbatore, Ahmadabad and Jaipur. Among them, Bangalore has highest solar power potential of about 1.94 million m2, in 2022.


Solar power market development plan:


The solar power market development plan is divided into 3 phases:


1. Niche Market Awareness:


The main objectives are to rekindle interest in Solar power generation in India, allow the industry to start-up production processes, determine the current cost and performance of Solar power generation ,and evaluate new Solar power generation concepts to see if they have promise for long term commercialization.


The main activity is to increase market awareness by funding one or two Solar plants in


India. These plants will likely be smaller than the optimum of over 200 MW because of the need to minimize investor risk and to start-up production processes.


It is recommended that the initial market focus should be in those markets where the conditions for solar power generation are currently most promising. Previous experience shows that these conditions are High Solar Resource, High fossil fuel prices, Daytime Peaking Utility, Inefficient Conventional Power Plants, Access to Water and the Grid.


Depending on the cost of power displaced, the financial support to achieve cost parity will range from $400 to $750 million or $550 to $1000 per kW.


2. Market Expansion:


The purpose of the market expansion phase is to develop larger systems to benefit from economies of scale, continue with product development to improve performance and lower costs, create a market large enough that manufacturers can justify construction of production lines, and standardize system designs. A standard design will help to improve the system cost performance by reducing design costs, streamlining equipment procurement and minimizing construction and start-up problems.


In this phase, 3000 MW of additional solar capacity is installed, or fifteen 200 MW plants. The cost of solar power is expected to fall from over 10 cents/kWh to between 7 and 8 cents per kWh.


Depending on the cost of power displaced, the financial support to achieve cost parity will range from $0.5 to $1.8 billion or $350 to $600 per kW.


3. Market acceptance:


The final part in the development plan is the market acceptance phase. The goal for this phase is to set up the necessary market structure so that solar power generating plants can compete with conventional power plants without financial support from the GEF or others.


The investment requirement in this phase is the most difficult to estimate and subject to the


widest variation. The cost of solar generated electricity is expected to fall close to conventional power values. A small difference in solar costs can have a huge impact on the market penetration.


Solar power generation market has the ability to dramatically transform lives. In a country, where 450 million people live without access to electricity and have to depend on kerosene and other alternatives for whatever little lighting they can get at night, solar power as an application in small home lightening system lightens up their lives.



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Introduction Of British Cuisine History Essay

 


British cuisine is the specific set of cooking traditions and practices associated with the United Kingdom. Historically, British cuisine means "unfussy dishes made with quality local ingredients, matched with simple sauces to accentuate flavour, rather than disguise it." However, British cuisine has absorbed the cultural influence of those that have settled in Britain, producing hybrid dishes, such as the South Asian chicken tikka masala, hailed as "Britain's true national dish".


Sunday roast consisting of roast beef, roast potatoes, vegetables and Yorkshire pudding


Vilified as "unimaginative and heavy", British cuisine has traditionally been limited in its international recognition to the full breakfast and the Christmas dinner. However, Celtic agriculture and animal breeding produced a wide variety of foodstuffs for indigenous Celts and Britons. Anglo-Saxon England developed meat and savoury herb stewing techniques before the practice became common in Europe. The Norman conquest introduced exotic spices into England in the Middle Ages. The British Empire facilitated a knowledge of India's elaborate food tradition of "strong, penetrating spices and herbs". Food rationing policies, put in place by the British government during wartime periods of the 20th century, are said to have been the stimulus for British cuisine's poor international reputation.


British dishes include fish and chips, the Sunday roast, steak and kidney pie, and bangers and mash. British cuisine has several national and regional varieties, including English, Scottish and Welsh cuisine, which each have developed their own regional or local dishes, many of which are geographically indicated foods such as Cheshire cheese, the Yorkshire pudding, Arbroath Smokier, and Welsh cakes.


1 History


2 Modern British cuisine


3 Varieties


3.1 Anglo-Indian cuisine


3.2 English cuisine


3.3 Gibraltarian cuisine


3.4 Northern Irish cuisine


3.5 Scottish cuisine


3.6 Welsh cuisine


5 curing (food preservation)


5.1 Chemical actions


5.1.1 Salt


5.1.2 Sugar


5.1.3 Nitrates and nitrites


5.1.4 Smoke


5.2 History


5.3 Some cured food products


6 Salt cured meat


7 Bacon


8 Pork


9 curing storage vegetables


10 References


Romano-British agriculture, highly fertile soils and advanced animal breeding produced a wide variety of very high quality foodstuffs for indigenous Romano-British people. Anglo-Saxon England developed meat and savoury herb stewing techniques and the Norman conquest reintroduced exotic spices and continental influences back into Great Britain in the Middle Ages as maritime Britain became a major player in the transcontinental spice trade for many centuries after. Following the Protestant Reformation in the 16th and 17th centuries "plain and robust" food remained the mainstay of the British diet, reflecting tastes which are still shared with neighbouring north European countries and traditional North American Cuisine. In the 18th and 19th centuries, as the Colonial British Empire began to be influenced by India's elaborate food tradition of "strong, penetrating spices and herbs", the United Kingdom developed a worldwide reputation for the quality of British beef and pedigree bulls were exported to form the bloodline of major modern beef herds in the New World.


Fish and chips, a popular take-away food of the United Kingdom.


During the World Wars of the 20th century difficulties of food supply were countered by official measures which included rationing. The problem was worse in the second World War and the Ministry of Food was established to address the problems. See Rationing in the United Kingdom during and after World War II. Due to the economic problems following the war rationing continued for some years afterwards. Food rationing policies, put in place by the British government during wartime periods of the 20th century, are often claimed as the stimulus for the decline of British cuisine in the twentieth century.


In common with many advanced economies, rapid urbanisation and the early industrialisation of food production as well as female emancipation have resulted in a highly modern consumer society with reduced connection to the rural environment and adherence to traditional household roles. Consequently food security has increasingly become a major popular concern. Concerns over the quality and nutritional value of industrialised food production led to the creation of the Soil Association in 1946. Its principles of organic farming are now widely promoted and accepted as an essential element of contemporary food culture by many sections of the UK population, and animal welfare in farming is amongst the most advanced in the world. The last half of the 20th century saw an increase in the availability of a greater range of good quality fresh products and greater willingness by many sections of the British population to vary their diets and select dishes from other cultures such as those of Italy and India.


Modern British (or New British) cuisine is a style of British cooking which fully emerged in the late 1970s, and has become increasingly popular. It uses high-quality local ingredients, preparing them in ways which combine traditional British recipes with modern innovations, and has an affinity with the Slow Food movement.


It is not generally a nostalgic movement, although there are some efforts to re-introduce pre-twentieth-century recipes. Ingredients not native to the islands, particularly herbs and spices, are frequently added to traditional dishes (echoing the highly spiced nature of much British food in the medieval era).


The custom of afternoon tea and scones has its origins in Imperial Britain.


Much Modern British cooking also draws heavily on influences from Mediterranean cuisines, and more recently, Middle Eastern, South Asian, East Asian and Southeast Asian cuisines. The traditional influence of northern and central European cuisines is significant but fading.


The Modern British style of cooking emerged as a response to the depressing food rationing that persisted for several years after the Second World War, along with restrictions on foreign currency exchange, making travel difficult. A hunger for exotic cooking was satisfied by writers such as Elizabeth David, who from 1950 produced evocative books whose recipes (mostly French and Mediterranean) were then often impossible to produce in Britain, where even olive oil could only normally be found in chemists rather than food stores. By the 1960s foreign holidays, and foreign-style restaurants in Britain, further widened the popularity of foreign cuisine. Recent Modern British cuisine has been very much influenced and popularised by TV chefs, all also writing books, such as Fanny Cradock, Robert Carrier, Delia Smith, Gordon Ramsay, Nigella Lawson and Jamie Oliver, alongside the Food Programme, made by BBC Radio 4.


Anglo-Indian cuisine is the often distinct cuisine of the Anglo-Indian community in both Britain and India.


Some Anglo-Indian dishes involve traditional British cuisine, such as roast beef, with cloves, red chillies, and other Indian spices. Fish or meat is often cooked in curry form with Indian vegetables. Anglo-Indian food often involves use of coconut, yogurt and almonds. Roasts and curries, rice dishes, and breads all have a distinctive flavour.


Some well-known Anglo-Indian dishes are salted beef tongue, kedgeree, fish rissoles, and mulligatawny. The cuisine's sweetmeats include seasonal favourites like the "kul-kuls" and "rose-cookies" traditionally made at Christmas time. There is also a great deal of innovation to be seen in their soups, entrees, side dishes, sauces and salads.


Some early restaurants in England served Anglo-Indian food, such as Veeraswamy in Regent Street, London, and their sister restaurant, Chutney Mary. They have however, largely reverted to the standard Indian dishes that are better known to the British public.


The term is also used for the Indian dishes adapted during the British Raj in India, some of which later became fashionable in Britain.


The British also introduced some European foods to India which are still eaten now, such as beetroot.


The fusion cuisine between Indian ingredients or spices and British ingredients – such as bread, bacon and baked beans – is also known as Brit Indi cuisine. This term was popularised by Manju Malhi.


English cuisine is shaped by the climate of England, its island geography and its history. The latter includes interactions with other European countries, and the importing of ingredients and ideas from places such as North America, China and southern Asia during the time of the British Empire and as a result of immigration.


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Gibraltarian cuisine is the result of a long relationship between the Andalucian Spaniards and the British, as well as the many foreigners who made Gibraltar their home over the past three centuries. The culinary influences include those from Malta, Genoa, Portugal, Andalusia and England. This marriage of tastes has given Gibraltar an eclectic mix of Mediterranean and British cuisine.


Below are some examples of typical Gibraltarian dishes.


Pasta


Rosto


Fideos al horno


Bread


Savoury


Calentita


Panissa


Sweet


Bollo de hornasso


Pan dulce


Meat


Rolitos


Pastries


Japonesa


Irish cuisine is a style of cooking originating from Ireland or developed by Irish people. It evolved from centuries of social and political change. The cuisine takes its influence from the crops grown and animals farmed in its temperate climate. The introduction of the potato in the second half of the sixteenth century heavily influenced cuisine thereafter. Irish beef is exported worldwide and renowned for its high quality. Representative Irish dishes are Irish stew, bacon and cabbage, boxty, coddle, and colcannon.


Scottish cuisine is the specific set of cooking traditions and practices associated with Scotland. It shares much with British cuisine, but has distinctive attributes and recipes of its own. Traditional Scottish dishes such as haggis and shortbread exist alongside international foodstuffs brought about by migration. Scotland is known for the high quality of its beef, potatoes and oats. In addition to foodstuffs, Scotland produces a variety of whiskies.


Welsh cuisine has influenced, and been influenced by, other British cuisine. Although both beef and dairy cattle are raised widely, especially in Carmarthenshire and Pembrokeshire, Wales is best known for its sheep, and thus lamb is the meat traditionally associated with Welsh cooking.


Bacon and kippers


Northern European countries generally have a tradition of salting, smoking, pickling and otherwise preserving foods. Kippers, bloaters, ham, and bacon are some of the varieties of preserved meat and fish known in England. Onions, cabbage and some other vegetables may be pickled. Smoked cheese is not common or traditional, although apple-wood smoked cheddar has become available in many supermarkets.[citation needed] Meats other than pork are generally not cured. The "three breakfasts a day" principle can be implemented by eating bacon sandwiches at any time. (In parts of northern England these have local names such as "bacon sarnies" or "bacon butties".)


Sandwiches


England can claim to have given the world the word "sandwich", although the eponymous John Montagu, 4th Earl of Sandwich was not the first to add a filling to bread. Fillings such as pickled relishes and Gentleman's Relish could also be considered distinctively English. Common types of sandwich are ham, cheese, salad and non-traditional forms such as the "ploughman's lunch" (cheese and pickle).


Curing refers to various food preservation and flavouring processes, especially of meat or fish, by the addition of a combination of salt, sugar, nitrates or nitrite. Many curing processes also involve smoking.


The chemical actions of curing are highly complex with slow reactions of proteins and fats through autolysis and oxidation. These reactions can be driven by auto-oxidation alone though it is typically accompanied by enzymes in the curing food as well as beneficial fungi and bacteria.


To enable these slow curing reactions and prevent rapid decomposition through rotting, water is extracted from the food and the food is made inhospitable to micro-organisms. This is usually done by applying salt and a combination of other ingredients to cure the food.


Table salt, which consists primarily of sodium chloride, is the most important ingredient for curing food and is used in relatively large quantities. Salt kills and inhibits the growth of microorganisms by drawing water out of the cells of both microbe and food alike through osmosis. Concentrations of salt up to 20% are required to kill most species of unwanted bacteria.


Once properly salted, the food's interior contains enough salt to exert osmotic pressures that prevent or retard the growth of many undesirable microbes.


Although often used in curing to give a pleasant taste, sugar can also be used to encourage the growth of beneficial bacteria such as those of the Lactobacillus genus. Dextrose or sucrose that is used in this fashion ferments the food.


As the unwanted bacterial growth is delayed, the salt tolerant lactobacillus out competes them and further prevents their growth by generating an acidic environment (around 4.5 pH) through production of lactic acid. This inhibits the growth of other microbes and accounts for the tangy flavour of some cured products.


Nytrosyl-heme


Nitrates and nitrites not only help kill bacteria, but also produce a characteristic flavour and give meat a pink or red colour.


The use of Nitrates in food preservation is controversial, though, due to the potential for the formation of nitrosamines when the preserved food is cooked at high temperature. The usage of either compound is therefore carefully regulated; for example, in the United States, the concentration of Nitrates and Nitrites is generally limited to 200 ppm or lower. However, they are considered irreplaceable in the prevention of botulinum poisoning from consumption of dry-cured sausages by preventing spore germination.


A 2007 study by Columbia University suggests a link between eating cured meats and chronic obstructive pulmonary disease. Nitrites were posited as a possible cause.


Although more frequently used for flavor than preservation, smoke is an antimicrobial and antioxidant. The smoke particles adhere to the outer surfaces of food, inhibiting bacterial growth and oxidation.


The practice of curing meat was widespread among historical civilizations, as a safeguard against wasting food and the possibility of a poor harvest. Although a salt-rich diet is currently implicated in risk for heart disease, in the past food shortage was the greater problem.


Salt cod, which was air-dried in cool northern Europe, was a civilization-changing food product, in that a bountiful but perishable food supply could be converted to a form that allowed for wide travel and thus exploration. Salted meat was widely used as a food source on ships during the Age of Sail, as it is non-perishable and easily stored. Eric Newby wrote that salted meats constituted the majority of shipboard diet even as late as his cruise aboard Moshulu (which lacked any refrigeration) in 1938.


Salted meat and fish are commonly eaten as a staple of the diet in North Africa, Southern China and in the Arctic.


Cured animal products:


Beef


Biltong


Corned beef


Bresaola


Tapa


Lomo


Pork


Ham


Prosciutto


Jambon de Bayonne


Jamón serrano


Jinhua ham


Coppa


Capicola


Lardon


Bacon and Pancetta


Elenski but


Sausage


Salami


Pepperoni


Chorizo


Linguiça


Chinese Sausage (lap cheung)


Fish


Anchovy


Salt cod


Lox (salmon)


Pickled herring


Cured vegetable products:


Tofu


Sauerkraut


Kimchi


Pickled cucumbers


Pickled beets


Olive (fruit)


A bagel containing salt beef and mustard


A packet of salted fish sold in a Singapore supermarket


Salt-cured meat or salted meat, for example bacon and kippered herring, is meat or fish preserved or cured with salt. Salting, either with dry salt or brine, was the only widely available method of preserving food until the 19th century.


Salt inhibits the growth of micro organisms by drawing water out of microbial cells through osmosis. Concentrations of salt up to 20% are required to kill most species of unwanted bacteria. Smoking, often used in the process of curing meat, adds chemicals to the surface of meat that reduce the concentration of salt required.


Salted meat and fish are a staple of the diet in North Africa, Southern China, and in the Arctic. Salted meat was a staple of the mariner's diet in the Age of Sail. It was stored in barrels, and often had to last for months spent out of sight of land. The basic Royal Navy diet consisted of salted beef, salted pork, ship's biscuit, and oatmeal, supplemented with smaller quantities of peas, cheese and butter. [1] Even in 1938, Eric Newby found the diet on the tall ship Moshulu to consist almost entirely of salted meat. Moshulu's lack of refrigeration left little choice as the ship made voyages which could exceed 100 days passage between ports.


Salt beef in the UK and Commonwealth as a cured and boiled foodstuff is sometimes known as corned beef elsewhere, though traditional salt beef is different in taste and preparation. The use of the term corned comes from the fact that the Middle English word corn could refer to grains of salt as well as cereal grains.


Uncooked pork belly bacon strips


Bacon is a cured meat prepared from a pig. It is first cured in a brine or in a dry packing, both containing large amounts of salt; the result is fresh bacon (also green bacon). Fresh bacon may then be further dried for weeks or months (usually in cold air), boiled, or smoked. Fresh and dried bacon must be cooked before eating. Boiled bacon is ready to eat, as is some smoked bacon, but either may be cooked further before eating.


Meat from other animals, such as beef, lamb, chicken, goat, or turkey, may also be cut, cured, or otherwise prepared to resemble bacon, and may even be referred to as "bacon". Such use is common in areas with significant Jewish and Muslim populations. The USDA defines bacon as "the cured belly of a swine carcass"; other cuts and characteristics must be separately qualified (e.g., "smoked pork loin bacon"). For safety, bacon must be treated for trichinella, a parasitic roundworm which can be destroyed by heating, freezing, drying, or smoking.


Pork tenderloin served French-style


Pork is the culinary name for meat from the domestic pig (Sus domesticus), which is eaten in many countries. The word pork denotes specifically the fresh meat of the pig, but it is often mistakenly used as an all-inclusive term which includes cured, smoked, or processed meats (ham, bacon, prosciutto, etc.) It is one of the most-commonly consumed meats worldwide, with evidence of pig husbandry dating back to 5000 BC.


Pork is eaten in various forms, including cooked (as roast pork), cured (some hams, including the Italian prosciutto) or smoked or a combination of these methods (other hams, gammon, bacon or Pancetta). It is also a common ingredient of sausages. Charcuterie is the branch of cooking devoted to prepared meat products, many from pork. Pork is a taboo food item in Islam and Judaism, and its consumption is forbidden in some sects of these two religions.


Some of your storage vegetables need to be cured before storage; some don't.  If you cure vegetables that don't need to be cured, they'll rot.  And if you don't cure vegetables that do need to be cured, they'll rot too.  Time for a good list!


Beet


none


Cabbage


none


Carrot


none


Garlic


1 - 2 weeks in a warm, dry place


Onion


2 - 3 weeks in a warm, dry place


Parsnip


none


Potato


2 weeks at 50 - 60 degrees Fahrenheit and 95% humidity (slightly warmer than a root cellar)


Sweet Potato


2 weeks at 80 - 85 degrees Fahrenheit (dry)


Turnip


none


Winter Squash (including Pumpkins)


2 weeks in a warm, dry place.  (Don't cure acorn squash!)


Curing serves a couple of purposes.  In all crops except white potatoes, a primary purpose is to dry the vegetable up so that it won't rot in storage.  White and sweet potatoes and winter squashes develop a hard skin during curing that will protect the crop during storage.


The cheapest and easiest method come up with for curing vegetables is to lay them out on some old window screens by the side of the road. the first screen on four cinderblocks, cover the screen with drying vegetables, then put bricks on the four corners of the frame to let put another screen on top for a second drying layer.  The trick is to get good air circulation all the way around your vegetables, so don't pile the roots on top of each other. 


People with more space will get away with drying their vegetables inside, but our trailer just isn't big enough to handle that type of operation.  Instead, Harvest my crops a bit earlier than other folks might and put drying racks under a tarp or roof outside to cure storage vegetables before the frost hits.



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President Franklin Delano Roosevelt History Essay

 


Franklin Delano Roosevelt (FDR) was an extraordinary American President and great leader. In this paper, I am going to chronologically illustrate 6 of his most significant leadership qualities. Those being:


FDRs ability to learn quickly


His ability to quickly connect with the people of the country


His strong sense of self confidence


His sense of duty and desire to serve the public


His strong sense of character (when FDR said it you knew it to be true)


His clear vision of America and the role of our country in world affairs


FDR’s Presidency was filled with many great accomplishments that reflect his leadership qualities. He got our country out of one of the biggest problems it has ever been in, “The Great Depression.” He also led us through much of W.W.I.I. Through all of this the people of the United States loved him. That is why he was elected President for four terms, which was unheard of. This clearly illustrates his sense of duty and his ability to connect with the people in the most trying of times. He was the inspiration, the leader this country needed in times of despair. I am going to show how the 6 leadership qualities identified got to him to this position and made him successful.


Next, I will describe how FDR rose to the position of being one of the greatest presidents’ in our country’s history. It all began with his upbringing. Our country’s Thirty Second President was born on January 30, 1882 at his parents, James and Sara Ann Delano Roosevelt’s estate in Hyde Park, New York. FDR grew up in a very financially prosperous household. His upbringing is the perfect description of what you would imagine a wealthy family existence would be during the late 1800s. From an early age, FDR traveled quite often with his family and because of this did not attend school. He was tutored at home. In his childhood he did not spend much time with children his own age. He was surrounded by adults. Because of this he became very mature for his age and developed a strong sense of both self confidence and awareness of world affairs.


His formal schooling began in 1896, at the age of 14 when FDR was sent to the Groton School, which is a private, prestigious, preparatory boarding school in Groton, Massachusetts. This is when it was realized just how gifted he was and his leadership began to flourish. His self confidence and strength of character inspired his class mates and he began to rise to the top.


The next step in FDR’s formal education began at Harvard University in 1900. During his college years at Harvard he was a leader. His leadership skills and ability to quickly learn led to his selection as the Managing Editor of the school newspaper, The Harvard Crimson, in 1903. His involvement and especially his position as managing editor in The Harvard Crimson showed his sense of commitment.


The year 1903 was one of FDR’s significant years. It was in 1903 that he became engaged to his fifth cousin once removed, Anna Eleanor Roosevelt, (Roosevelt was both her maiden name and her married one). They married two years later on St. Patrick's Day, March 17, 1905. Franklin and Eleanor had six children within the next 11 years. Franklin D. Roosevelt entered Columbia Law School in 1905; however, he left right after he passed the New York State Bar exam in 1907.


Just 3 years later, FDR started his political career when was asked to run as a Democrat for the state senate seat from Duchess County, New York in 1910. He worked extremely hard campaigning for that position that had been held by Republicans for a long time, and in the end he won. That election showed his perseverance as a leader, his sense of commitment, and his long rang vision for the United States and the people in his constituency. He was reelected in 1912 but FDR’s career as state senator was cut short when President Woodrow Wilson appointed him as the Assistant Secretary of the Navy in 1913. Just think, only eight years after leaving law school, his leadership qualities led to such a prestigious appointment.


Since the U.S was making preparations to join in World War One, Franklin’s position became even more important. In 1920, FDR was chosen to run as Vice President of the United States with Cox, and even though they lost the election, this shows Franklin’s desire as a leader to take on challenges and accept more responsibilities. Even though he lost, this quick rise to the top of the United States political position shows how FDR inspired everyone he came in contact with.


The summer of 1921 was a very significant year for FDR. At the age of 39, he became paralyzed and handicapped when he contracted polio. However, his leadership skills again prevailed. FDR faced his physical disability with courage, persistent determination, and hopefulness. FDR led our country with those strong character traits. He definitely demonstrated a strong sense of character and desire to serve the people of the United States.


When Franklin D. Roosevelt was asked to run for governor of New York in 1928, he had to determine if his body could withstand the strenuous campaign required to win this position. Refusing to let his physical disabilities hold him back he went for the position and won the election for Governor of New York in 1928, and was re-elected 1930.


The Great Depression hit the United States when Roosevelt was holding the position of Governor of the State of New York. President Herbert Hoover took only small, limited steps to solve this gigantic economic problem as average citizens lost their jobs and their savings. As a result of Hoover’s limited steps people became furious. American citizens were demanding change in the Presidential election of 1932 and FDR promised to deliver it to them. As a result of his promise, FDR was elected President of The United States of America in a landslide election. FDR really shined, he was extraordinary and clearly demonstrated each of the 6 leadership traits I previously listed.


Roosevelt’s first two terms as President were spent taking steps to help get the U.S out of the Great Depression. The first three months of his presidency, which are popularly known as “the first hundred days,” were extremely active. Roosevelt offered the “New Deal” to Americans immediately after he took office. FDR declared a “Bank Holiday” with the passing of the Emergency Banking Act of 1933. The purpose of the “Bank Holiday” was to strengthen the banks and reestablish confidence in the banking system. He also quickly created many agencies (such as the AAA, CCC, FERA, TVA, and TWA) to help offer people relief during these difficult times. FDR’s handling of the great depression showed that he was a great and creative problem solver, which is an extremely important leadership skill. It also greatly helped him gain tremendous support from the American people.


On March 12, 1933, just after a week in office, Roosevelt delivered his first Fireside Chat, in which he announced that the nation’s banks would reopen. The all of the banks had been closed with the Emergency Banking Act of 1933 which is popularly known as the “Bank Holiday,” because banks were failing by the masses. His address was so reassuring that over half a million letters were sent to the White House over the following week. This showed his charisma to connect with large numbers of American people. This “Fireside Chat” radio address, like the others that would follow it, helped calm citizens’ fears and worries, and instill confidence in the Government. Even though Franklin’s policies lessened the severity of the Great Depression, they did not bring it to an end.


The US would not get completely out of the Great Depression until WW II FDR ordered an increased production of war machinery and supplies, once World War II began in Europe, which put many people to work. FDR went against what his advisers suggested early in the war regarding his support for Britain. His actions in this case have shown that he was extremely self confident. After the Japanese attacked Pearl Harbor on Hawaii, Franklin answered the attack with his famous "a date which will live in infamy" speech and a formal declaration of war. FDR was one of the “Big Three” (Roosevelt, Churchill, and Stalin) as he led the US into World War II. Roosevelt won his fourth presidential election in 1944; however, he unfortunately did not live through it. Franklin Delano Roosevelt died from a massive cerebral hemorrhage on April 12, 1945 at the age of 63.


In summary, I have provided a chronological biographical description of Franklin Delano Roosevelt’s life with emphasis on describing what I felt were his 6 most significant leadership qualities which were:


FDRs ability to learn quickly


His ability to quickly connect with the people of the country


His strong sense of self confidence


His sense of duty and desire to serve the public


His strong sense of character (when FDR said it you knew it to be true)


His clear vision of America and the role of our country in world affairs


FDR was a remarkable leader who brought our country through the most trying of times. I was inspired to learn just how great a person he was.



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