General Structure of Electrical Power System

General Structure of Electrical Power System Introduction to Power generation The high voltage electric transmission is the bulk transfer of electrical energy, from generating power plants to substations. This is from the local wiring between high voltage substations and customers are referred to as electricity distribution. Transmission lines, when interconnected with each other, become high voltage transmission networks. Transmission lines mostly use three phase alternating current (AC), although single phase AC is sometimes used in railway electrification systems. High-voltage direct current (HVDC) technology is used only for very long distances; undersea cables. Electricity is transmitted at high voltages to reduce the energy lost in long distance transmission. Power is usually transmitted through overhead power lines. Underground power transmission has a very high cost and greater operational limitations. The main problem in the Power distribution is that electrical energy cannot be stored so it is generated based on the necessity. A control system is req uired to ensure electric power generations match the demand. Power generating plant low voltage is produced. The generator terminal voltage is then stepped up by the power station transformer to a higher voltage for transmission over long distances. Power Losses Transmitting electricity at high voltage reduces the fraction of energy lost due to resistance. For a given amount of power, a higher voltage reduces the current and thus the resistive losses in the conductor. At extremely high voltages, conductor and ground, corona discharge losses are so large that they can offset the lower resistance loss in the line conductors. Transmission and distribution losses are generally below 10%. In general, losses are estimated from the discrepancy between energy produce and energy sold to end customers; the difference between what is produced and what is consumed constitute transmission and distribution losses. In an alternating current circuit, the inductance and capacitance of the phase conductors can be significant. The currents that flow in these components of the circuit impedance constitute reactive power, which transmits no energy to the load. Reactive current causes extra losses in the transmission circuit. The ratio of real power (transmitted to the load) to apparent power is the power factor. As reactive current increases, the reactive power increases and the power factor decreases. For systems with low power factors, losses are higher than for systems with high power factors. At the substations, transformers reduce the voltage to a lower level for distribution to commercial and residential users. This distribution is accomplished with a combination of sub-transmission (33 kV to 132 kV) and distribution (3.3 to 25 kV). Finally, at the point of use, the energy is transformed to a low voltage. Power Load balancing The transmission system provides for base load and peak load capability, with safety and fault tolerance margins. The peak load times vary by region largely due to the industry. Power requirements vary by the season and the time of day. Distribution system designs always take the base load and the peak load into consideration. The transmission system usually does not have a large buffering capability to match the loads with the generation. Thus generation has to be kept matched to the load that prevents overloading failures of the generation equipment. Multiple sources and loads can be connected to the transmission system and they must be controlled to provide orderly transfer of power. In centralized power generation local control of generation involves synchronization of the generation units to prevent large transients and overload conditions. In distributed power generation the generators are geographically distributed and the process to bring them online and offline must be carefully controlled. The load control signals can either be sent on separate lines or on the power lines. To load balance the voltage and frequency can be used as a signaling mechanism. In voltage signaling, the variation of voltage is used to increase generation. The power added by any system increases as the line voltage decreases. Voltage based regulation is complex to use in mesh networks, since the individual components and set points would need to be reconfigured every time a new generator is added to the mesh. In frequency signaling, the generating units match the frequency of the power transmission system. In droop speed control, if the frequency decreases, the power is increased. Wind turbines and other distributed storage and generation systems can be connected to the power grid, and interact with it to improve system operation. 5.2 Power generation and distribution through overhead lines with single line diagram Electrical power system deals with the technology of generation, transmission and distribution of electrical energy. An electric power system consists of different subsystem are explained as follows I. Generation subsystem The conversion from one source to electrical energy through the process of electromagnetic conversion. This system consists of group of generation systems. Power system comes into existence with the growing demand of electrical energy. Power generations are classified as Hydraulic, nuclear power, fossil fuel and non-conventional power, solar power. II. Transmission subsystem The overhead transmission network transfers electrical energy from generating stations located at long distance to the distribution system. The Transformer and transmission line subsystems are designed in such way to transmit bulk power for consumption at the load line. The step-up transformers are used in various range of step-up voltage based on the requirements. A transmission voltage varies between 66 kV to 440KV in India. III. Sub-transmission system The sub-transmission network is the portion of transmission system connected to the high voltage substations using transformers. IV. Distribution subsystem By this process energy is connected to different distribution subsystem to a place a main transmission subsystem. A distribution subsystem consists of over headlines and underground cables. The distribution of power system is generally in two levels feeder or primary voltage at 11kV and secondary/consumer voltage at 415 Volt for three-phase and 230 Volt for single phase supply for house hold application. Each individual customer is connected to the secondary circuit through service leads and a meter. Distribution system is classified as Radial distribution system, loop distribution system and network distribution system. From the main switch electrical energy is distributed to the various points using distribution board system and tree system. V. Control subsystem This subsystem is formed by relays, switch and other control elements to protect other subsystems to protect faults and overloads to ensure efficient, reliable and economic operation of electric power system. Figure 6.1 Block diagram of single line power system Step-up and step down Transformers are used in all subsystems. At the sending end from generator step up Transformers are used and the receiving end step-down Transformers are used. Power and distribution Transformers are used in power line system depending upon the power handling capacity. Earthing The earthling of electrical installation is undertaken for the following reasons. To avoid shocks to a living body. To ensure the potential with respect to the earth of any current carrying conductor does not rise above its designed level. To provide safety to operating personal To avoid fire hazard due to leakage current. Representation of the transmission line A transmission line has series resistance, series inductive reactance, shunt capacitance and leakage resistance which are distributed evenly along its length. Except for long lines, the total resistance, inductance, capacitance and leakage resistance of the line can be concentrated to give a lumped-constant circuit which simplifies calculation. The particular lumped-constant circuit used depends on the length of the line and the required accuracy of the calculations. For the purpose of this introduction to power system calculations, we will consider a representation which is accurate for short transmission lines up to about 80 km in length. For this length of line, the shunt capacitance and leakage resistance can be ignored. It should be noted that this assumption is not valid for unloaded lines when the shunt capacitance dominates. Power system analysis is required for a large number of different purposes System design and control to maintain consumer voltage at statuary levels as affected by conductor sizing and transformer tap charger position. Fault calculations to ensure that the maximum fault current can be interrupted by circuit breakers or fuses and that large fault currents cause the minimum of damage to the power system. Design of protection systems to ensure faulty circuits are switched off rapidly (

Censorship Essay -- Argumentative Persuasive Essays

Censorship The Columbia Encyclopedia defines censorship as the "official prohibition or restriction of any type of expression believed to threaten the political, social, or moral order". It is necessarily broad definition. 'Any type of expression' in fact, covers just about everything from clothing to print to movements and even to simply being. George Bernard Shaw described assassination as an "extreme form of censorship". It is now omnipresent in society and has been as long as society has existed. If one were to consider the course of an idea (and it is essentially ideas that are being censored) as its natural evolution, censorship takes this evolutionary course and disrupts and changes it, often until it is no longer the same substance as before. Why do states (in truth any group of people) feel the need to censor? Moreover, can it be done effectively in the first place? It is human nature to prevent propagation and evolution of stories or is it human nature gone awry? What is our attachment to the status quo and what does privilege have to with this attachment? How do those without privilege subvert the systems of censorship in either information (media, literature, etc.) or other cultural memes? Although it is not a popular notion, censorship in the eastern liberal democracies is alive and well. As American children, we learn the evils of McCarthyism and the Red Scare and similar instances as simply shadows of past evils- long banished to history. While we learn the facts of the period, the truth/ compelling force behind these periods of extreme censorship is never examined closely enough. The truth is that in out pseudo-western politically correct haze, the fear and prejudice that underlies all attempts at censor... ...s gene line, those elements of society and culture that have been deemed undesirable are prevented from being heard and thus spread. The subject of censorship is expansive and therefore cannot be dealt with definitively in this space. It is, however, a subject that should be considered by everyone more in-depth. While the mechanisms within our society and indeed our world seek to silence the stories of which do not do them glory, one must strive to resist the "breeding" of ideas. Our stories are far from being absurd and worthless show poodles. They must not be weakened because of a lack of expression and audience or from a lack of original inspiration. In the face of a potentially shrinking 'gene pool' of ideas, even the fresh consideration of the devices of censorship is a subversive act which will be, in the end, the possible salvation of everyone's stories.

Production of Acetone

5. 1 MANUFACTURING PROCESSES: Acetone is produced directly or indirectly by propylene. Early processes for the manufacture of acetone were based on the thermal decomposition of calcium acetate or the carbohydrate fermentation of corn starch or molasses. The ready availability of propylene in the 1960s led to routes based on the dehydrogenation of isopropyl alcohol or cumene peroxidation. (1) By Cumene Oxidation (Hock Process). Propene is added to benzene [71-43-2] to form cumene [98-82-8], which is then oxidized by air to cumene hydroperoxide, and cleaved in the presence of an acid catalyst like zeolite. Phenol [108-95-2] and acetone [67-64-1] produced in the process are recovered by distillation. Ratio of phenol to acetone is 1:0. 6. (2) By Dehydrogenation of 2-proponal The hydration of propene [115-07-1] gives 2-propanol [67-63-0], which is then dehydrogenated to acetone. In the United States a C3 stream containing 40 – 60 % propene is used for the manufacture of 2-propanol. A large number of catalysts for 2-propanol dehydrogenation have been studied, including copper, zinc, and lead metals, as well as metal oxides, e. g. , zinc oxide, copper oxide, chromium-activated copper oxide, manganese oxide, and magnesium oxide. Inert supports, such as pumice, may be used. CH3CH=CH2 CH3CH(OH)CH3 CH3COCH3 +H2 (3) By catalytic oxidation of Propene (Wacker-Hoechst). The process is analogous to the oxidation of ethylene to acetaldehyde by theWacker process. The catalyst solution typically contains 0. 045M Palladium (II) chloride, 1. 8M Copper (II) Chloride, and acetic acid. The reaction usually is carried out in two alternating stages. In the first stage, air is used to oxidize the metal ions to the +2 oxidation state. In the second, air is removed and propene added. Palladium (II) oxidizes propene, and the resulting Palladium (I) is reoxidized by the pool of copper (II). Besides propionaldehyde, chlorinated carbonyl compounds and carbon dioxide also are formed. Acetone and the byproducts are removed from the catalyst solution by flash evaporation with steam and separated by fractional distillation. A mixture of acetone (92 % selectivity) and propionaldehyde (2 – 4 % selectivity) is produced. CH3CH=CH2 + ? O2 CH3COCH3 + CH3CH2CHO (4) By oxidation of p-Disisopropyl Benzene (Goodyear Process). Acetone is coproduced with hydroquinone [123-31-9] from p-diisopropylbenzene [100-18-5] in a process analogous to the phenol – acetone production from cumene. In the Goodyear process p-diisopropylbenzene is oxidized by oxygen in the presence of caustic. The p-diisopropylbenzene dihydroperoxide [3159-98-6] formed is crystallized and washed with benzene. It is then dissolved in acetone and cleaved to hydroquinone and acetone in the presence of sulfuric acid. Next the acid is neutralized with ammonia and the ammonium sulfate formed is filtered. Acetone is recovered by distillation from the reaction mixture. 5) By distillation of Calcium Acetate. Manufacture of Acetone from Acetate of Lime, etc. – Acetone is produced commercially by the dry distillation of various acetates, calcium acetate (commercial grey acetate of lime) or barium acetate being generally used. The single acetate is usually employed, although mixtures of two acetates have been recommended. Grey calcium ace tate usually contains about 80 per cent calcium acetate, the remaining 20 per cent consisting of water and various impurities, including small quantities of calcium formate and propionate as well as salts of other organic acids. Calcium acetate when heated at a temperature of about 380Â ° C. decomposes, giving acetone and a residue of calcium carbonate, but at the same time the accompanying calcium salts present as impurities also react and acetaldehyde and various higher ketones are formed together with the condensation products. In addition other impurities (such as dumasin) and tar-like bodies are formed. Ca(CH? -COO)? CH? -CO-CH? + CaCO? (6) By fermentation of Corn Products by selected Bacteria. The process was started during World War II to provide acetone needed for the manufacture of cordite. The last operating plant in the United States (Publicker Industries) closed in 1977. The fermentation of cornmeal or molasses by various members of the Clostridium genus yields a mixture of 1-butanol, acetone, and ethanol in 2 % overall concentration. The products are recovered by steam distillation and then fractionated. 5. 2 SELECTION OF PROCESSES: Sr NoProcessesParameterCatalystAdvantages/ Disadvantages 1Cumene OxidationYield:- 40% Selectivity:- 90% 1)For Cumene hydroperoxide Temp:- 120 0C Pressure:- 1 atm 2) For acetone Temp:- 60-65 0CAcid catalyst like zeoliteAdvantage:- Valuable main product phenol Disadvantage: – ) Higher operating cost. 2) Acetone is as a byproduct. 2Dehydrogenation of 2-proponalYield:- 90% Selectivity:- 98% Temp:- 300-500 0C Pressure:- 3 atm Dehydrogenation Catalyst:- ZnO, CuAdvantages:- 1) The primary advantage of this process is that the acetone produced is free from trace aromatic compounds, particularly benzene. 2) Less operating cost 3) Valuable byproduct Hydrogen which is 99% pure. 4) High Yield 3Catalytic oxidation of PropeneYield:- 97-99% Selectivity:-92% Temp:- 140 0C Pressure:- 14 atmPalladium Chloride – Cupric ChlorideAdvantage:- 1) Single stage Disadvantages:- 1) High capital & operating cost. 2) Corrosion problem. 4Oxidation of p-Di-isopropyl BenzeneYield:- 20% Temp:- 80-90 0CSulfuric acidDisadvantage: – 1) Higher operating cost. 2) Acetone is as a byproduct. 3) Lower yield 5Distillation of Calcium AcetateYield:- 75% Temp:- 380 0C Disadvantage: – 1) Higher operating cost 2) Lower yield 6Fermentation processYield:- 28-30% Temp:- 35-450CClostridium Madisonii VacteriaDisadvantages: – 1) Lower yield. 2) Higher processing cost due to increase in price of petrochemical feedstock which is used for extracting the acetone. On the above discussion between various methods we are choosing the IPA route to produce Acetone. 5. 3 PROCESSES DESCRIPTION: The production of acetone is divided in two parts. 1)Production of IPA through Feed drum is a kind of tank used for the mixing of the recycle stream and feed stream. Recycle stream concentration was assumed to be same with the feed stream. The temperature of the feed stream is assumed to be 25 0C at 2 bar pressure, which is assumed to be constant. The temperature of recycle stream was calculated as 111. 5 0C. The temperature of the leaving stream was calculated as 32. 9 0C, by the energy balance around feed drum. In the vaporizer molten salt was used for heating. The temperature at the entrance of the unit is the temperature of the mixture leaving the feed drum, which is 32. 89 0C. And the leaving temperature is the bubble point temperature of the mixture, which is 109. 5 0C. The pressure is 2 bars, and assumed to be constant. Since the temperature leaving the vaporizer is not enough for the reaction a pre-heater was used. The unit is working at 2 bars, and assumed to be constant. The entrance and leaving temperatures are 109. 50 0C and 325 0C. The reactor was the starting point for the calculations. The temperature values for the entering and leaving streams were found from literature, which are 325 0C and 350 0C, respectively. The reaction taken place inside is endothermic, for this reason the reactor has to be heated. For heating, molten salt was used. The pressure is 1. 8 bar, and assumed to be constant. The entrance temperature of the cooler is 350 0C and leaving is 94. 70 0C. For cooling, water was used. Instead of water a refrigerant may be used. Better results may get. But since it costs too much, it wasn’t chosen as the cooling material. From the temperature values it’s easily seen that the load is on the cooler not on the condenser, for this process. But in reality the unit cannot cool that much, and the load is mostly on the condenser. In this process, the mixture cooled down to its dew point. The pressure is 1. 5 bar, and assumed to be constant. The temperature of the entering stream is the dew point and the leaving temperature is the bubble point of the mixture. In the condenser water was used as cooling material. In the calculation of the dew and bubble points Antoine Equation was used. Trial and error was used with the help of Excel. The mixture includes acetone, i-propyl-alcohol, water and hydrogen. But hydrogen was not taken into consideration in the calculations. Since the condensation temperature of hydrogen is very low, it is not condense in the condenser. It stays in this for this reasons it has no effect on bubble and dew point calculations. Also since it does not affect the temperature calculations it’s not taken into consideration on mole and mass fraction calculations. The leaving and entering temperatures are 94. 70 0C and 81 0C, respectively. The pressure is 1. 5 bar, and assumed to be constant. Flash unit was assumed to be isothermal, for this reason temperature was not changed. It is 81 0C in the entrance and exit. The pressure is 1. 5 bar, and assumed to be constant. By trial and error method, (V / F) value was found to be 0. 2. The entrance temperature of the unit is the bubble point of the mixture, but if it was its dew point the (V/F) value would be much higher. Scrubber was assumed to be adiabatic. The temperature of water entering the unit was assumed to be 25 0C. The temperature of the off gas, including hydrogen and a very little amount of acetone, was assumed to 70 0C. But this assumption is too high, a lower temperature should have been assumed, since a lot of water is used in the unit. It should have been around 40 0C – 50 0C. The temperature of the leaving stream was found to be 28. 10 0C. The pressure of the unit is 1.. 5 bar, and assumed to be constant. The streams leaving the scrubber and flash unit are mixed together before entering the acetone column. The temperature leaving the flash unit and scrubber are 81 0C and 28. 10 0C, respectively. The temperature of the mixture was found to be 45 0C. This result was getting by using energy balance around the mixing point. The acetone column is used to separate the acetone from the mixture. The entrance temperature is 45 0C. The leaving temperatures for the top and bottom product are 102. 3 and 105, respectively, which are the bubble and dew points. Top product of the unit includes acetone i-propyl-alcohol and 99wt% of the product is acetone. This amount is assumed to be the desired acetone production rate, which is 115000 ton/year. From the bottom i-propylalcohol water and a very little amount of, 0,1 %, acetone is discharged. The pressure is 1. 1 bar, and assumed to be constant. In the distillation column, i-propyl-alcohol and water are separated. The entrance temperature is 105 0C. The leaving temperatures of the top and bottom products are both 111. 50 0C. The top product is recycled to the feed drum. For this reason it’s assumed to have the same concentration with the feed stream. But in reality a very little amount of acetone exists in the stream. It’s calculated but neglected on the recycle stream calculations. The bottom product is assumed to be pure water and it’s thrown away. Since its temperature is very high it cannot be recycled to the scrubber. But if a cooler is used, a recycle can be used. The pressure is 1. 1 bar, and assumed to be constant.

Dynamite Alfred Nobel Essay Example

Dynamite Alfred Nobel Essay Example Dynamite Alfred Nobel Essay Dynamite Alfred Nobel Essay For the implementation of the tests for explosive-based cable bolts, three different explosives gunpowder, emulsion dynamite and gelatinite dynamite were used (Thompson, 285-291). The amount of explosive to be placed into the cap is very important. If the amount of explosive becomes relatively high, a greater than required pressure will be applied onto the borehole wall. As a result of this pressure, some cracks may occur in the rockmass. In contrast to this, if the explosive is less than needed, the cap will not expand adequately, and the anchorage capacity will be decreased. According to calculations carried out for the gelatinite dynamite, the required amount of the explosive was found to be ~780 g. However, this amount is only a reference quantity for a first approach. The real quantity, found using the trial and error method in the tests, amounts to 75 g/cap. Similarly, explosions are conducted on large scales in the destruction of buildings, in a way that the surrounding areas have minimal effects of the dynamite blasts and the tasks of the engineers are accomplished very efficiently and effectively (Perrings, 129-135). â€Å"In 1867 dynamite was invented, and in 1869 the mechanical drill run by compressed air was invented. These two inventions created a technological revolution in the mining industry. Dynamite was safer and easier to control than black powder. A steam engine-driven air compressor for the mechanical drill was generally installed outside the mine, and air lines were extended to the drills under ground. Most mines were worked on a small scale, with only a few miners and support personnel. † (Technology of Colonial and Victorian Iron Mining) The anchorage of the first 8 concepts was provided by a friction force developed through expansion of the cap in the borehole wall (Thompson, 285-291). However, for the oblique concept, a rotational moment has been additionally created by the pulling of the cable attached to the cap. The cap designed for this concept is shown in Figs. 1 and 2. In this concept, the upper part of the cap has been designed to be inclined. There were also 2-mm deep scratches on the cap as for the other concepts. These scratches facilitate the expansion of the cap. In this system, the barrel and wedge anchor for holding the cable causes the rotational moment on the cap. This rotational moment gives rise to additional friction between the cap and the borehole wall. These oblique caps are illustrated in Fig. 3. The invention of dynamite in the middle of 19th century was surely a breakthrough in some of the industrial processes. It was through this dynamite that, Alfred Nobel made further discoveries and went on to make a number of industries. The use of dynamite still dominates in the mining and construction industries and is considered to be one of the most significant discoveries of its time. A. G. Thompson: Tensioning reinforcing cables. Rock support in mining and underground construction, Rotterdam, Balkema, 1992, 285-291. Alfred Nobel His Life and Work http://nobelprize. org/alfred_nobel/biographical/articles/life-work/index. html Accessed, March 18, 2007

Input and Output Devices Essays

Input and Output Devices Essays Input and Output Devices Essay Input and Output Devices Essay 1. Keyboards:Ad- Data can be entered quickly.- Most pcs come with a keyboard.Dis- It is easy to make mistakes when using a keyboard.- Hard to enter some data e.g. details of diagrams and pictures etc.2. Mouse:Ad- It is easier to move stuff around with a mouse than using the arrow keys on the keyboard.- Generally easy to use.- Its often faster to use a mouse of getting the tasks you want to start.Dis- They can stop functioning correctly if not cleaned and looked after properly.- People new to pcs can find it difficult to control the pointer on the monitor.3. Touchpad:A touchpad has all the same advantages as a mouse except it doesnt have the problem of getting dirty.4. Joystick:Ad- Games often take input from a joystick.- There is an immediate feel of direction due to the movement of the stickDis- There not particularly strong and can break.- Can be hard to use and some other methods are preferred5. Digital Camera:Ad- there is no expensive developing costs.- Yo u can edit, enhance or enlarge the pictures.- Dis- they are generally more expensive than ordinary cameras.- There not as convenient.6. Scanner:Ad- Any image can be converted from paper into digital format and later enhanced and used in other computer documents.Dis- Images can take up a lot of memory space.7. Magnetic stripe reader:Ad- Magnetic strips are built into many plastic cards such as cheque guarantee cards, cash-point cards and personal identity cards.- The magnetic strip on the back of the card can hold the personal details of the card owner and, with the necessary PIN, will allow access to secure information e.g. bank account details. Data stored on the strip is scanned and input into a computer system by a reader.Dis- they can get damaged.- Ordinary equipment can read but not change the data.8. Microphone:Ad- you can add your own recordings to presentations or emails etc.- People with a range of disabilities can use it for voice recognition and many appliances that can b e used by voice control.Dis- it can become distorted when background noise is present.- Sound sampling often produces very large data files.8. MIDI:Ad- you can have a wide range of editing tools on the pc e.g. tune speed instrument etc.- The data is very compact.Dis- a musician is required to play the instrument to input in to the pc.- The main disadvantage is that it has a limited specialist use.9. Laser printer:Ad- produces a very high quality output.- are very quiet and very fastDis- quite expensive to buy.10. Inkjet printer:Ad- is cheaper to buy, offering black and white or colour printing with reduced levels of quality and speed.Dis- they are slower than laser printers.- Can dry out if left for long.- Expensive to change cartridges11. dot-matrix printers.Ad- low running costs and are cheap to buy.- Offer a cheap reliable method of getting a second copy of a printout.Dis- They are comparatively noisy and low quality- They are slow.12. Plotter:Ad- A plotter can be used to produce high quality, accurate, A3 size or bigger drawings. They are usually used for Computer Aided Design (CAD) and Computer Aided Manufacture (CAM) applications such as printing out plans for houses or car parts.-Dis- they are slower than printers.- Often more expensive to buy than printers.- Not suitable for text although it can be produced.- limit to amount of detail.

The Nature of Crime Essay Example | Topics and Well Written Essays - 1500 words

The Nature of Crime - Essay Example Therefore according to this theory low self control will increase the possibility of a person committing a crime, self control is achieved during early age when a child is socializing, poor parenting will lead to low self control to a child in future while strict and proper parenting will lead to high self control to a child. This theory applies to age, race and gender, a research done to determine the age crime relationship showed that the age variable for certain crimes supported the theory in that the age was a direct result of low self control depending on level of socialization. There also exist differences among races and ethnic groups because of the difference in supervision among this groups, but the races and ethnic groups do not directly determine crime instead it is the amount of socialization by parents that determine the occurrence of crime. According to the two classical scholars low self control is as a result of poor parenting which determines the quality of socialization, parents therefore should undertake the responsibility of punishing their children incase of any misconduct in order to avoid the development of low self control which intern will lead to a h... s low self control is as a result of poor parenting which determines the quality of socialization, parents therefore should undertake the responsibility of punishing their children incase of any misconduct in order to avoid the development of low self control which intern will lead to a high possibility of the occurrence of crime. Various scholars have tested this theory and there exist various criticisms, some scholars argue that the theory relates behaviors such as drinking and smoking as criminals behaviors but to be realistic smoking and drinking individuals do not necessarily mean that they are criminals. Another critic is that the theory assumes that crime is committed for the purpose of pursuing self interest, but this may not be true for all types of crimes because some other crimes such as murder may be committed for other reasons other than self interest. The theory is also criticized for favoring traditional roles of the family, the two classical theorists favor the traditional society and argue that a child should have both parents, this is unrealistic. Other studies have opposed the theory and suggested that adult social bonds such a person who has a stable job and a happy marriage may not involve himself in crime despite a poor socializing and parenting. However the theory is a clear breakthrough in criminology and has helped understand the causes of crime, although the theory faces some critics it is the only theory that well explains he concept of crime and also possible ways of minimizing crime through proper parenting. Question 2 Discuss the role of formal "sanction threats" in offender decision making. In doing so, your essay should address: Formal social controls play a major role in the prevention of crime; control is expressed

Article Review and Critique Example | Topics and Well Written Essays - 750 words

Review and Critique - Article Example Prior to the presentation of the different skills of Franklin, Uldrich presented the different accomplishments in different fields and disciplines (Uldrich, 2005, p.31). According to the article, Benjamin Franklin is a businessman, a scientist, a politician, a diplomat and Founding Father of the American Society. As a businessman, he was able to build and establish the first printing and newspaper chain of businesses in the different American colonies at a young age. He was also the author of the first best seller Poor Richard’s Almanac (p.31). He was also a great civil servant and politician who improved a number of public services and policies. One of the unparalleled achievements that he has was being a politician who participated in the creation and implementation of the founding policies of the American society specifically during the time of the Revolution. ... The first leadership skill presented is the ‘importance of continuous education’ in the success of a person as exhibited in the life of Benjamin Franklin. Through the course of his life, he is continuously learning and exploring different fields. This is a characteristic of a good leader since a leader must be very aware of the different issues and knowledge which can affect the group and can help him in the decisions he needs to undertake in every step of the way towards achievement of his perceived goals. He is self thought leader who was able to explore the different fields important to thrive in the society which includes the political, diplomatic, social and economic aspects of the American and international society. Franklin was an ultimate example of a human being hungry for knowledge (p.32). The author made an important decision of highlighting the said characteristic of Franklin since education is an essential tool in a person’s success but it is not limi ted to formal education. The entrepreneurial skill of Benjamin Franklin was the next leadership skill discussed by Uldrich. Although the business is one of the most important fields where Franklin excelled in, it cannot be considered as the second most essential in all his skills. One explanation that can be perceived in the authors chronology in discussion is the time he undertook each quest. Education started since Franklin’s childhood and continued on through his different careers and his life. His prowess in business occurred as a young man. The author presented and proven Franklin’s leadership skills through the presentation of his achievements as a business man. In addition, entrepreneurial risk taking