Mrs Wright Self Destruction Analysis - 1733 Words

The Causes and Results of Mrs. Wright’s Self-Destruction Everyone is responsible for their own actions, including the ones they dont take, even if the cause or reason roots from another source. This concept is hidden in the play â€Å"Trifles†, written by Susan Glaspell in 1916. Taking place in the early 1900s, the script is based off of the common social patterns of that time period. The plot is centered around the murder of Mr. Wright by his wife, who was socially and emotionally neglected by him. Readers typically pin the blame of her shocking actions on Mr. Wright, who was aggressive and aloof to his spouse behind closed doors. Admittedly this was a critical and obvious reason behind the murder, but it obscures the fact that Mrs. Wright’s†¦show more content†¦COUNTY ATTORNEY. To be sure. And yet [With a little bow to her] I know there are some Dickson county farmhouses which do not have such roller towels. [He gives it a pull to expose its full length again MRS. HALE. Those towels get dirty awful quick. Men’s hands aren’t always as clean as they might be. (Glaspell 3) This passage shows how Mrs. Wright had to clean up after her husband frequently and received no appreciation. Furthermore, when being questioned by the county attorney during the murder investigation, Mrs. Hale, the next door neighbor, speaks of all the additional work Mrs. Wright was subjected to. In the beginning of the questioning, Mrs. Hale reflects on Mrs. Wright. â€Å"I liked her well enough. Farmers’ wives have their hands full, Mr. Henderson (Glaspell 4).† Mrs. Wright was expected to cook, clean, and knit, like most other women in that time period. As an outcome of her incessant chores, she seldom left her own home, mirroring the concept of being her husband’s possession. She was unmotivated to thrive as her own person and instead chose to cage herself into the stereotype placed upon her. To further explain the how perception of women in the early nineteenth century affected the characters, â€Å"Trifles† includes many instances where the men mock and underappreciate Mrs. Wright, Mrs. Peters, and Mrs. Hale. While the county attorney, sheriff, and Mr. Hale search the house, they collectively comment on the activities performed inShow MoreRelatedComparative Character Analysis of Classical vs. Modern Tragic Protagonists.793 Words   |  4 PagesComparative Character Analysis of Classical Vs. Modern Tragic Protagonists. A hero/ heroine is described as the principal male/ female character in a literary or dramatic work or the central figure in an event, period, or movement. The classic tragic hero was defined by Aristotle in the fourth century as, someone who is highly renowned and prosperous (LATWP, 639), suggesting that there is a natural right ordering and proportion of traits within the human being that if violated, produces calamityRead MoreEntrapment Of Household: Analysis Of â€Å"A Doll’S House†.1657 Words   |  7 PagesEntrapment of Household: Analysis of â€Å"A Doll’s House† The author of â€Å"A Doll’s House†, Henrik Ibsen was criticized for his controversial advocacy of moral and social reform by failing to respect the institution of marriage in his plays. A Doll’s House presents the aftermath of nineteenth-century patriarchal husbandry like those in Susan Glaspell’s play, â€Å"Trifles†. 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Should Marijuana Be Used For Medical Purposes - 1659 Words

Tonisha Williams Professor Peters HUS-1400-171 19 September 2014 Marijuana Marijuana, a Schedule I, classified drug is one of America’s most controversial drugs. Many people are against marijuana because it legally considered a drug and many people support marijuana because of its reported use for preventing and treating diseases. Personally, I believe that marijuana should be used for medical purposes. My opinion, however, comes primarily from what I have observed through brief news reports and what I have been told from people who has used the drug before. I never really took the time and did any educational research on the drug myself. Hopefully, after I complete this essay, I will have a better understanding of the drug and I would†¦show more content†¦The drug then was used for cases of weakness, constipation, malaria and some mental disorders. (The Truth about Drugs, New York, 2005 pg. 43). Marijuana seems to have spread from China, south and west to India. There it was used for religious ceremonies around 1000 B.C. (The Truth about Dr ugs, New York 2005, pg. 43). Marijuana became the normal to the people of India. In fact, it was accepted then just as beer and other alcohol beverages are accepted here now in America. It was perfectly normal then for people to come home after a long day of work and relax by smoking or drinking a liquid form of marijuana. (The Truth about Drugs, New York 2005, pg. 43). Marijuana was then traced to be found in Iran, Assyria, Greece, Rome, Egypt and Africa. Marijuana made is debut in Europe around the 1800s. (The Truth about Drugs, New York 2005, pg. 44) In 1839, the British physician W. B. O’Shaughnessy recommended the medical use of marijuana for a variety of illnesses and as a mild intoxicant.( The Truth about Drugs, New York 2005, pg. 44) Many times marijuana could be obtained without a medical prescription. Several common writers of the time wrote documents regarding the effects of marijuana. It is still unconfirmed when exactly did marijuana enter the United States. Many believe the drug was bought by the Spanish during the exploration of the Americas. Some people believe that it was brought over on

Improving Productivity and Sustainability Free Samples to Students

Question: Discuss about the Improving Productivity and Sustainability. Answer: Introduction: Aerodynamic performance of a vehicle depends on several factors such as the design of the vehicle (including all its components), amount and position of the loads it is carrying, and external factors such as wind intensity and speed. This report focuses on the effect of amount and position of loads on a vehicles aerodynamic performance. To start with, it is important to understand what vehicle aerodynamics is about. In general, vehicle aerodynamics entail the forces acting on the vehicle as it moves through the air. When a vehicle moves through air, it experiences some resistance Management known as drag. This resistance has significant impacts on how the vehicle: is handled/controlled, accelerates and attains fuel mileage (George, 2009). It is for this reason that vehicles nowadays designed by considering their aerodynamic performance. The key benefits of a vehicle with good aerodynamic performance are: improved safety, easy control, improved fuel mileage and efficiency, increased d river and passenger comfort and reduced carbon emissions (Hardin, 2007). This implies that aerodynamic performance affects each aspect of the vehicles use thus it is of great importance to be considered when designing a vehicle. The main goals and objectives of ensuring good aerodynamic performance of a vehicle is to minimize drag, reduce noise, and prevent other factors that may result into aerodynamic instability, such as unwanted lift forces. There are five main forces that affect aerodynamic performance of a vehicle. These are: aerodynamic drag, aerodynamic lift, side force, bouncing (yawing movement), and rolling movement. Aerodynamic drag is the air resistance created when the vehicle moves through the air. This force acts in the opposite direction to the motion of the vehicle. Aerodynamic lift is the resultant forces vertical component. It is caused by distribution of pressure over the vehicle body. It usually results from reduction of pressure between the tyre of the vehicle and the ground. Side force is the wheel imbalance created when the vehicle is negotiating a corner. Yawing movement is the vehicle bodys vertical movement. Rolling movement is the vehicles movement about the longitudinal axis. Al l these forces are directly or indirectly affected by the amount and position of the vehicles loads. Study of aerodynamics has become very critical in the automobile industry as the need for improved fuel efficiency and vehicle performance increases. Manufacturers of race cars are among those that take vehicle aerodynamics very seriously because this is what gives them an advantage over their competitors. If a race car is designed considering all the important factors related to aerodynamics then it will be able to race at the highest speed possible leaving its competitors far behind. History of aerodynamics in racing car industry From early 20th century and backwards, most designers of racecars were focused on creating streamlined bodies and reduced frontal areas so as to minimize drag (George, 2014; Niedermeyer, 2010). As a result of this, they were able to create cars that raced at very high speeds with no extra engine power. However, study and integration of aerodynamic factors in the design and manufacturing of racecars was very slow in the early days mainly because of inadequate funding. Research and development projects related to this were very minimal, leaving designers to rely mainly on trial and error or their experience. Another challenge was that the streamlined bodies of racecars increased their weights resulting to handling difficulties Management. Drivers found it very difficult to control the cars especially when negotiating corners at high speeds. One of the reasons behind this instability was pressure imbalance between the front and rear ends. Moving at high speeds caused pressure reduction on top of the car, which causes the rear end to lift. This caused rapid over-steering of the car. These challenges drove designers and engineers to start developing designs that lowered the cars center of gravity and with improved handling even at greater speeds. It was until 1960s that things started changing completely when racecar designers focused on how to improve aerodynamics performance of cars by considering both drag and lift. It was then that aerodynamics components started being incorporated in the racecars bodyworks (Rapid-Racer.com, 2016). Since then, numerous developments have been made in relation to improving aerodynamics performance. Advantages of improved aerodynamics performance of vehicles Today, aerodynamics is a very important element in vehicle design. In fact, all vehicles nowadays are designed by putting in mind factors that affect aerodynamics. This is mainly because of the potential advantages, which include the following: Safety is always the top priority in vehicle design and manufacturing. Aerodynamics help designers to determine the right shape, size and type of vehicle components, and where and how they should be joined to create the complete product. Using aerodynamics, designers are able to determine the right weight limits that the vehicle can carry and how the weights should be distributed. It also helps in establishing the appropriate components that can be added on the vehicle to improve its aerodynamics performance. Such components include wind deflectors installed on roofs of trucks or caravans to deflect wind away from the vehicles (Lord, 2015).The concept of aerodynamics is also applied in improving safety of double deck buses. The load compartments of these busses are at the lowest points so as to lower their centre of gravity. The upper decks are also not allowed to be overloaded at any given time so as to reduce the height of weight or load that helps in reducing chances of toppling. All these improve aerodynamic performance of vehicles. This is a major advantage of vehicles with improved aerodynamic performance. The loads of these vehicles are appropriately distributed at all points, which makes it easier for the driver to accelerate, decelerate, brake, or negotiate a corner. With proper aerodynamics, the vehicle does not topple easily irrespective of how sharp the corner it. Chances of under-steering or over-steering are also greatly reduced. This advantage is very useful in the racing cars because drivers are able to negotiate very sharp corners without toppling. The same advantage is being capitalized in sports cars. In general, improved aerodynamics helps the driver to be in control of the vehicle at all times. Improved fuel mileage and efficiency Vehicles with greater aerodynamic performance have higher fuel mileage and efficiency because of several reasons. First and foremost, the vehicles experience very minimal resistance between the tyres and the road. This enables the vehicles to move faster and easily. Second, the vehicles have great traction due to proper distribution of loads across all axles. Third, they experience less drag thus minimal power is needed to push them through the air. When these three factors are combined, they result into vehicles that consume less fuel over longer distances than vehicles with low aerodynamic performance. Aerodynamics assist in designing vehicles that do not bounce or cause any discomfort, of drivers or passengers, when negotiating a corner. These vehicles turn without under-steering or over-steering, which make journeys comfortable irrespective of distance or meandering of roads. When the vehicle is negotiating a corner or when brakes are applied appropriately, there is no scattering of loads from one side to another because the loads are properly reduced. The comfort is also in terms of reduced noise level. Vehicles with improved aerodynamic perform have minimal noise levels regardless of the speed at which they are travelling. This is because the bodies of these vehicles are designed in a way that facilitates seamless flow of air around the top and sides of the vehicle thus minimizing the noise produced when the vehicle is moving through the air. Carbon emissions are among the top factors affecting global warming. One of the leading sectors Management contributing to carbon emissions across the world is transportation. This has prompted researchers and designers to capitalize on potentials of aerodynamics to reduce carbon emissions from vehicles. These vehicles have higher fuel efficiency, which means that they use less fuel that is fully converted into power. Use of less fuel and higher conversion rate of the fuel into power means reduced carbon emissions. This is also facilitated by proper distribution of the loads they vehicle is carrying and ensuring that the loads are within acceptable legal limits. Therefore aerodynamics is being used to make vehicles cleaner by improving their fuel efficiency. Drivers and passengers always want to reach their destinations faster but safely. The former is usually achieved if the vehicle is able to travel at higher speeds, without compromising the safety of drivers, passengers and even goods being transported. Aerodynamics helps in designing vehicles that experience very minimal air resistance (drag) thus they are able to move at greater speeds. For instance, todays racing cars are also able to travel at supersonic speeds mainly because of improved aerodynamic performance. When all factors affecting aerodynamics are considered in design of vehicles, the final products are those that experience less air and road resistance. If these resistances are reduced, it means that vehicles are able to travel faster. Factors affecting aerodynamics performance of vehicles Aerodynamics performance of a vehicle is influenced by a wide range of factors. Load is one of these factors. The elements of load that affect aerodynamics is amount of the load and the position of the loads in the vehicle. To optimize the advantages of aerodynamics, the total amount of load carried by the vehicle must be within the set legal limits by the manufacturer and the state or country. In addition, the load should be properly distribution in the vehicle to prevent toppling or difficulties in controlling the vehicle. Therefore some of the factors that affect aerodynamic performance of vehicles are as follows: The amount and position of loads largely affects the stability and aerodynamic performance of the vehicle because they determine its centre of gravity. The centre of gravity of the vehicle should be as low as possible. This is why most heavy components of the vehicle such as the engine, suspension and load compartments are at lowest points of the vehicle (Woodford, 2016). For example, double-deck buses are not allowed to carry extra passengers on the upper deck. This is because if the upper deck carries extra passengers, the bus centre of gravity will be raise thus making it more unstable especially when negotiating a corner (Francois et al., 2009; TutorVista.com, 2017). Nevertheless, these buses are also designed to ensure that they do not topple even if the lower deck is empty while the upper deck is full of passengers (Gibbs, 2016). Thus in order to maintain the centre of gravity of the vehicle as low as possible and improve the vehicles aerodynamic performance, most loads must be at the lower points of the vehicle (Whiting and Rugg, 2012). Balancing is a very important factor when carrying loads in a vehicle. The loads must be evenly distributed to prevent imbalance that can make it difficult to control the vehicle. If more loads are on one side of the vehicle, it is likely to incline towards that side. This makes the vehicle susceptible to losing balance and toppling if it gets pushed by a very slight force. Thus when loading the vehicle, the loads have to be balanced properly. If some loads are removed along the journey, the remaining loads should also be rearranged to ensure appropriate balancing (Cottingham, 2017; Land Transport Safety Authority, (n.d.)). The load should also be appropriately distributed between the front and back areas. No load should be more at either the front or back of the vehicle, beyond recommended ranges. When too much weight is subjected on the steering wheels, steering becomes very difficult leaving the driver unable to control the vehicle. This excess load can also damage the steeling ty res and axle. When the front axles are underloaded, may be because of most loads bin shifted to the rear of the vehicle, the weight of the steering axle becomes too light for safe steering. When the driving wheels have too little weight, traction of the vehicle is likely to be poor. This can cause easy spinning of the drive wheels (TruckingTruth.com, (n.d.)). In general, excess loads at the front of the vehicle tends to cause under-steering while excess loads at the rear of the vehicle causes over-steering. Under-steering occurs when the turning or steering of the vehicle is more than it was commanded or intended by the driver, causing the vehicle to spin. Under-steering occurs when the turning or steering of the vehicle is less than it was commanded or intended by the driver, causing the vehicle to leave the road. These two can be avoided by determining the centre of mass of the vehicle. Proper load distribution of a vehicle requires accurate calculations of the total load supported by the vehicle so as to determine how well it should be distributed across the axles (Toner, 2011). This is usually done by the vehicle manufacturers and include the information in vehicle manuals (Weber, 2014). Legal weight limits load amount Every country or state has legal weight limits for different categories of vehicles. The main reasons of setting this legal weight limits are to ensure that all vehicles carry loads that do not reduce their aerodynamic performance nor compromise their stability and safety, and that the vehicles do not overload and damage roads and bridges (Khan, Ayub and Qadir, 2014OECD, 2011). Legal weight limits include maximums for axle weights, tyre loads, gross combination weights, gross vehicle weights, etc. An overloaded vehicle is very difficult to steer, control its speed or brake. When a vehicle is overloaded, it has to move at a very low speed on upgrades, which increases its aerodynamic drag. These speed of these vehicles can also increase rapidly and uncontrollably when moving downgrades. When this happens, it becomes difficult for the driver to control the vehicle and it can easily overturn or topple. Most people tend to focus only on the maximum amount that the vehicle should carry forgetting about the minimum loads. Underloading is as dangerous as overloading. This is because an underloaded vehicle cannot generate enough downward force to overcome lift that could otherwise make the vehicle airborne. However, the downward force also increases drag, which limits the vehicles speed and increases its fuel consumption (Lucas, 2014). Addition of downward forces increases the total amount of vertical load acting on tyres. This means that the driver has to use more power to accelerate and brake the added load, which reduces speed of the vehicle. On the other hand, the additional downward force improves the concerning performance of the vehicle without having great impact on other areas of the vehicles performance. To optimize aerodynamic performance of a vehicle, drag should be minimized and downward force should be increased up to recommended limits (Beeton, 2012). In other words, aero dynamics should be used to ensure proper balancing between drag, lift and downward force to maximize vehicle performance. Therefore improving aerodynamic performance of a vehicle is desirable because it has the potential to save engine power, reduce fuel consumption and emissions, improve stability safety of the vehicle, and increase speed. It is important to determine and analyze all factors influencing aerodynamics of the vehicle such as drag, lift and downward force so as to identify the most suitable quantity of loads that the vehicle should carry and how to position them appropriately. References Beeton, S. (2012) Introduction to Race Car Aerodynamics [Online]. Available: https://www.worldtimeattack.com/index.php/introduction-to-race-car-aerodynamics/ [Accessed May 3, 2017]. Cottingham, D. (2017) Carrying loads on a car, motorbike or trailer [Online]. Available: https://www.drivingtests.co.nz/resources/carrying-loads-on-a-car-motorbike-or-trailer/ [Accessed May 2, 2017]. Francois, D.G., Delnero, J.S., Colman, J., Maranon, L.J., and Camocardi, M.E. (2009) Experimental determination of stationary aerodynamics loads on a double deck bus. 11th Americas Conference on Wind Engineering, June 22-26, 2009, San Juan, Puerto Rico. George, A. (2014) The Bizarre Germany Car that was Ultra-Aerodynamic and totally impractical [Online]. Available: https://www.wired.com/2014/09/german-aerodynamic/ [Accessed May 3, 2017]. George, P.E. (2009) How Aerodynamics Work [Online] HowStuffWorks. Available: https://auto.howstuffworks.com/fuel-efficiency/fuel-economy/aerodynamics.htm [Accessed May 2, 2017]. Gibbs, K. (2016) Stability [Online]. Available: https://www.schoolphysics.co.uk/age11-14/Mechanics/Statics/text/Stability_/index.html [Accessed May 2, 2017]. Hardin, D. (2007) Car Aerodynamics all about aerodynamics [Online]. Available: https://www.superstreetonline.com/how-to/paint-body/130-0612-car-aerodynamics-tech/ [Accessed May 2, 2017]. Khan, S.U., Ayub, T. and Qadir, A. (2014) Effect of overloaded vehicles on the performance of highway bridge girder: a case study. Procedia Engineering, 77(2014), pp. 95-105. Land Transport Safety Authority (n.d.) Heavy vehicle stability guide. Wellington, New Zealand: Land Transport Safety Authority. Lord, P. (2015) How Important are RV Aerodynamics? [Online]. Available: https://www.tradervs.com.au/features/1505/how-important-are-rv-aerodynamics [Accessed May 3, 2017]. Lucas, J. (2014) What is aerodynamics? [Online]. Available: https://www.livescience.com/47930-what-is-aerodynamics.html [Accessed May 3, 2017]. Niedermeyer, P. (2010) An illustrated history of automotive aerodynamics in three parts [Online]. Available: https://www.thetruthaboutcars.com/2010/02/an-illustrated-history-of-automotive-aerodynamics-in-three-parts/ [Accessed May 2, 2017]. Organization for Economic Co-operation and Development (OECD) (2011) ITF Research Reports Moving Freight with Better Trucks Improving Safety, Productivity and Sustainability: Improving Safety, productivity and Sustainability. Paris, France: OECD Publishing. Rapid-Racer.com (2016) Aerodynamics [Online]. Available: https://www.rapid-racer.com/aerodynamics.php [Accessed May 2, 2017]. Toner, R. (2011) Calculating commercial vehicle weight distribution payload made easy [Online]. Available: https://www.worktruckonline.com/channel/safety-accident-management/article/story/2011/09/calculating-commercial-vehicle-weight-distribution-payload-made-easy.aspx [Accessed May 2, 2017]. TruckingTruth.com (n.d.) Transporting Cargo Safely [Online]. Available: https://www.truckingtruth.com/cdl-training-program/page34 [Accessed May 2, 2017]. TutorVista.com (2017) Equilibrium and Stability [Online]. Available: https://www.tutorvista.com/content/physics/physics-i/forces/equilibrium-and-stability.php [Accessed May 2, 2017]. Weber, R. (2014) Its not just the weight of the truck its how that weight is spread around. The commercial truck upfitter should be able to help [Online]. Available: https://trailer-

Communication and Distributed Resources †Free Samples to Students

Question: Discuss about the Communication and Distributed Resources. Answer: Introduction Power blackout has been a phenomenon witnessed in South Australia State with more focus on its implications on the life of South Australians. Power failure is a serious problem that left many citizens counting losses prompting government intervention. System engineering problem is contributed to a number of factors that point to the interplay of these factors. Some of these factors include energy source problems, power generation, power transmission problems and human or political factors. The interplay of these factors is a major contributing factor to the instability of power coupled with blackouts and failures to restart these power systems. The challenge that current power system poses to South Australian government is the recipe for finding a long-lasting solution to the energy problem. The only viable alternative energy is the introduction of a greener cheaper and stable energy solution into the South Australian energy network. The following paper explores the system engineerin g problems for the SA State power problem and finding greener cheaper and stable energy solution. System engineering problem that results in the power issue in South Australia State can be traced to many interlinked factors. These factors include a power source, power generation, transmission and human or political factors. A critical understanding of these factors sheds more light on the system engineering problems that contribute to a power issue in South Australia State. Wind power source though plays a significant role in green energy used in the South Australia State. Wind power has unstable transmission challenges due to its frequency when under different wind frequency. This is quite challenging when it comes to connecting most of wind power lines to the main grid. In terms of connectivity, wind as a source of power poses challenges to the interconnector due to these irregular transmissions of power from wind farms. The challenge has contributed to frequent trips or shutdowns that are reported through Australian Energy Market Operator. In addition, various generator failures also contribute to the power problems that are experienced in the South Australia state. For instance, failure of Mintaro emergency diesel generator once contributed to the massive electricity failure. The effort to revive this generator failed as it was damaged by storm (Sykes, Adamiak Brunello 2006, pp. 145-158). Power generation as system engineering problem Nearly 40% of the electricity used within the South Australia state is generated from wind power. Wind power energy is prone to system engineering problems that are a cursive factor for power issue. Interconnecting the wind power into the grid is a couple with engineering challenges such as the need for back up by baseload power for days when the wind to generate power is not available. In addition, wind power requires perfect harmony of 50 cycles (50 hertz) every second day for the supply and demand operation (Weber 2016, pp 1-5). When the frequency gets beyond the tune the connectors trips the shutdown switch. This is because the wind power is asynchronous its frequency fluctuates in response to the winds. Reduction in the power generated has also been realized within the power network especially within the power generation stations. The inability of some power generators to restart due to lower power, this was seen in the case of Torrens Island power station which needed enough po wer from Victoria interconnectors (Verzosa 2011). The system engineering issues are also witnessed in the transmission of power that is coupled with many interconnectors. One of the transmission power problems that highly result in the power outage is the instability of power connectors. The instability of these interconnectors makes the addition of the South Australia power to the electricity network difficult to stabilize the power frequency on the network (Waldhuter 2016, pp 23). For instance, during one of the power blackout, many different interconnectors switched off though some were immediately switched on before the power failure. The report by Australian Energy Market Operator indicates that the first interconnector switch-off was realized near Adelaide though it was later automatically reset. The second switch-off was between Brinkworth and Templars which was followed by Davenport Belalie line, this line was reset and tripped some nine seconds later. At the point of these interconnector trips, Hallet Wind Farm reduced its power output by 123 MW followed by a massive fault that saw 257kV transmission line fails. At the end of the fault, nearly nine wind power farms shutdown casting doubt on the capacity of these power farms. Furthermore, most of the power farms reduced their power output causing irregular transmission and subsequently interconnectors tripped (Fischer et al 2012, pp1). Human and political factors also contribute to system engineering failure that has highly contributed to a power failure in South Australia State. Firstly, human errors and failure to inspect the system contributes to the power issue. It reported that there are continuous reductions of wind power output that can be attributed to human errors. Secondly, political factors such as licensing of supplier firms also contributed to power failures resulting in power blackouts. AEMO signed contracts with different companies to supply various systems some which failure or damaged raising the credibility concerns of these firms (Weber 2016, pp 1). For instance, AEMO signed a contract with system restart ancillary service to restart the network yet it did not due to its location within the power network. This was after Mintaro Emergency Diesel generator was severely damaged by the storms experienced in the country. Conclusively, power failures can also be attributed to power licensing and select ion of energy equipment suppliers in the country. The political class of Australia lead by the prime minister who indicated the massive failure of wind power farms (Bourke Koziol 2016, pp 1). Storms and weather is another factor that contributes to power problems witnessed in South Australia State. Frequent storms and bad weather that destroy grid are critical factors that have to lead to failure of the system (Edwards, Puddy Owen 2016). This is causing massive system engineering challenges as the storms sometimes destroy important power generators. Moreover, weather changes especially wind direction and fluctuation of breeze affects the wind power generation which forms 40% of power in South Australia State. Political interference on the power generation stations is another important issue as was the case of one failure (Courier Mail 2013). Greener stable and cheaper energy is an important solution for the power issue that has been experienced in South Australia State. Finding greener stable cheaper energy solutions entails many different factors that need to interplay. Firstly, development of energy regulations and policies is an important factor for consideration. To find a greener stable and cheap energy solution requires establishing policies by the government that will help set energy policies such as cheap energy sources. In addition, policies need to open ground for establishing of energy suppliers that will be ready to offer cheaper energy at a cheaper price. Greener energy solution should factor in the need for renewable and cleaner energy source. The energy solution should be stable with minimal power failures as compared to the current power system. Energy regulations should give the greener companies opportunity and capacity to provide energy without any restriction. The regulation should also change the nat ional electricity market given its fragility and need to bring other greener energy solutions such as solar power (Tziouvaras 2007, pp. 251-270). Stakeholders contribution to greener energy solution The government regulation on greener energy solution should consider those companies that are providing greener energy first. Empowering companies which are the major stakeholders in the energy system is important for an energy solution. This implies that those companies that are already venturing into greener energy should be allowed to provide the energy to their full capacity without any political interference. The progress of this company will give the direction on other companies that can also be allowed to provide greener energy within South Australia. Energy licensing agency, therefore, an important role in ensuring current greener companies is given the opportunity to supply power. Moreover, the strategy gives priority to a first company that is already providing greener energy before allowing the second company to come in and provide energy (Renew Economy 2016). Greener energy needs to be stable, cheaper and compliment the current source of energy that is characterized by system failures. Firstly, with the current high energy bills that are affecting most Australians, there is a need for a cheaper greener energy solution. Cheaper energy sources need to have low pollution and complies with the current green energy regulations. Secondly, greener energy solution needs to be stable with the ability to reduce power outages as compared to the current energy source used in South Australia State. A greener energy needs to be developed in a way that has minimal transmission challenges in order to maintain stability throughout the year. Thirdly, greener energy allows interconnectivity with other energy networks without compromising the stability of the network. The connection of a greener energy source to the current energy system can allow usage of energy mix which is stable and cheaper as compared to other sources of energy (Climate Council 2016). Example of the greener energy solution One example of greener stable and cheaper energy solution is the solar power energy solutions. Solar power has been shown to be one of the greener energy sources due to its renewable nature. Solar power energy has a continuous power supply, especially when connected with a suitable battery capable of storing power for a long time. Solar power energy solutions have proved to be cheaper as compared to other energy sources that require maintenance cost for continuous power supply. The stability of the solar energy rests on it continuous supply and lack of interconnectors required to make the transmission lines. It only takes a supply of solar components that are provided to households. For instance, the Virtual Power Plant that is currently under trial in South Australia. The solar energy system consists of a 5Kw solar panel and 1.3kWh Tesla Powerwall 2 battery supplied to each household. This greener energy is cheaper and estimated to cost a bill of 30% lower as compared to current ele ctricity bill in South Australia (Heniche, Kamwa Dobrescu 2013, pp. 1-5.143 ). Conclusion In conclusion, massive power blackout experienced in South Australia is attributed to several factors. Some of these factors include power generation problems, energy sources issue, power transmission issue, physical factors and human or political factors. The interplay of these factors result in faulty transmission and subsequent power shutdown or power blackouts experienced. To help find a lasting solution to these challenges finding a greener cheaper and stable energy solution is the best alternative. This, therefore, necessitate the need for energy regulations that allow those current companies that offer greener energy to provide energy in full capacity before introducing other companies. References Bourke, L. Koziol, M. (2016) Minister Josh Frydenberg, senator Nick Xenophon question renewable in wake of South Australia blackout. Sydney Morning Herald. Available at: https://www.smh.com.au/federal-politics/political-news/energy-minister-josh-frydenberg-says-south-australia-blackout-raises-questions-about-renewables-20160928-grques.html [Accessed on 30 September 2016] Climate Council (2016) Myth busting: electricity prices in South Australia. Stock A and Stock P. Available at: https://www.climatecouncil.org.au/uploads/e993194468726947cbd7c4f7216a2316.pdf Courier Mail, (2013) Almost 250,000 homes without power as weather hits SEQ electricity grid. Available at https://www.couriermail.com.au/news/almost250000homeswithoutpowerasweatherhitsseqelectricitygrid/storye6freon61226563631914 [Accessed on January 28, 2013] Edwards, V.; Puddy, R. Owen, M. (2016) Storm leaves SA without power, heads to NSW, Victoria, Tasmania. The Australian. Available at: https://www.theaustralian.com.au/national-affairs/state-politics/cyclonic-storm-plunges-south-australia-into-the-dark-ages/news-story/480dadb0440519a433b7631b7de1e293 [Accessed on 30 September 2016] Fischer, G. et al, (2012) Tutorial on Power Swing Blocking and Out-of-step Tripping, presented at 39th Annual Western Protective Relay Conference, October, available at https://cdn.selinc.com/assets/Literature/Publications/Technical%20Papers/6577_TutorialPower_JBF_20120911_Web.pdf?v=20151125-094320 Heniche, A. Kamwa I. Dobrescu, M. (2013) Hydro-Qubec's defense plan: Present and future, 2013 IEEE Power Energy Society General Meeting, Vancouver, BC, pp. 1-5.143 Renew Economy, (2016) SA Blackout may lead to more batteries and microgrids. Available at: https://reneweconomy.com.au/2016/sablackoutmayleadtomorebatteriesandmicrogrids-67618 SA Power Networks, (2016) Power Outages. Available at: https://outage.apps.sapowernetworks.com.au/OutageReport/OutageSearch?AspxAutoDetectCookieSupport=1 Sykes, J., Adamiak M. Brunello, G. (2006) Implementation and Operational Experience of a Wide Area Special Protection Scheme on the SRP System, 2006 Power Systems Advanced Metering, Protection, Control, Communication, and Distributed Resources, Clemson, SC, pp. 145-158 Tziouvaras, D. (2007) Relay Performance During Major System Disturbances, presented at 60th Annual Conference for Protective Relay Engineers, pp. 251-270, available at https://ieeexplore.ieee.org/document/4201100/ Verzosa, Q. (2011) Realistic Testing of Power Swing Blocking and Out-of-Step Tripping Functions, Proceedings of the 38th Annual Western Protective Relay Conference, Spokane, WA, October. Waldhuter, L. (2016) SA weather: Worsening conditions cause more blackouts as BOM warns of more storms. ABC News. Available at https://www.abc.net.au/news/2016-09-29/worsening-conditions-cause-more-blackouts-across-sa/7887020 [Accessed on 29 September 2016] Weber, D. (2016) Western Australia sends transmission towers to storm-affected SA. Australian Broadcasting Corporation. ABC News. Available at: https://www.abc.net.au/news/2016-09-29/wa-sends-power-towers-to-help-out-sa/7891014?section=wa [Accessed on 30 September 2016]