Wednesday, September 4, 2019
HAWT Technology Research
HAWT Technology Research Horizontal Axis Wind Turbines (HAWT), are the most commonly used wind turbine.HAWTs have a similar design to a windmill, with blades that look like a propeller, spinning around a horizontal axis.                                  Figure 1 Typical HAWT All the components (blades, shaft, gearbox, generator) are located at the top of the tower. The blades must face into the wind and yaw into position every time the wind direction changes. The shaft axis is horizontal to the ground. The wind hits the blades of the turbine where lift causes rotation. The shaft has a gear on the end coupled to a gearbox which turns a generator. The generator produces electricity and sends this either to power grid or electrical equipment requiring power. The wind turbine also has some key elements that adds to its efficiency. Inside the Nacelle (or head) is an anemometer, wind vane, and controller that read the speed and direction of the wind. As the wind changes direction, a motor (yaw motor) turns the nacelle so the blades are always facing the wind. The power source also comes with a safety feature. In case of extreme winds the turbine has a break that can slow the shaft speed. This is to inhibit any damage to the turbine in extreme conditions. See F igure 2.                Figure 2 Internal components of a typical HAWT The merits of horizontal axis wind turbine over vertical axis wind turbine can be seen in                               Table1 Benefits of HAWTs vs VAWT HAWT VS VAWT NO POWER GENERATION EFFICIENCY HORIZONTAL AXIS VERTICAL AXIS 1 POWER GENERATION EFFICIENCY 50% 60% ABOVE 70% 2 ROTATING SPEED HIGH LOW 3 EFFECT ON BIRDS GREAT SMALL 4 GEAR BOX ABOVE 10KW: YES NO 5 BLADE ROTATION SPACE QUITE LARGE QUITE SMALL     6 NOISE 5-60 Db 0-10 Db 7 STARTING WIND SPEED HIGH(2.5-5m/s) LOW (1.5-3 m/s)  Horizontal Axis Wind Turbine Blade The blade is one of the most important components of a wind turbine. It is required to have the best materials, manufacturing, analysis and testing to endure aerodynamic loads, gravitational loads, inertia loads and operational loads throughout its lifetime. Therefore, the structural design process has a decisive and critical influence on the overall performance of the blade. The structural design of a HAWT blade involves many considerations such as strength, stability, cyclic loading, cost and vibration. Reducing the mass is a key requirement for a successful blade design. A lighter blade will not only exert lower loads on the remaining components of the HAWT, but also reduce the cost. This is a benefit to the entire turbine system, including the support body and the foundation. However, the recent approach results in material layup with high component thicknesses. Blade mass as a result often does not exhibit a satisfactory structural response. There is huge potential to reduce the amount of material used in the blades manufacture to minimise its mass. The process of structural blade optimisation to reduce mass and increase its mechanical properties is an important area of development worthy of in-depth research. Table 1 details various HAWTs and their rotor weights.                   Table 2 Selection of turbine size and weight configurations Turbine Name Pitch or Stall Rotar dia (m) No of Blades Nacelle and Rotor Weight (kg) Weight per Swept Area (kg/m ²) Mitsubishi MWT-1000 (1 MW) P 57 3 unspecified Nordex N90 (2.3 MW) P 90 3 84,500 13.3 Nordex N80 (2.5 MW) P 80 3 80,500 16 Repower 5M (5 MW Siemens P 126 3 unspecified SWT-3.6-107 (3.6 MW) Siemens P 107 3 220,000 24.5 SWT-2.3-93 (2.3 MW P 93 3 142,000 20.9 Gamesa G90-2MW (2 MW P 90 3 106,000 16.7 Gamesa G58-850 (850 kW) P 58 3 35,000 13.3 Enercon E82 (2 MW) P 82 3 unspecified GE wind 3.6sl (3.6 MW) P 111 3 unspecified Vestas V164 (7.0 MW) P 164 3 unspecified Vestas V90 (2 MW) P 90 3 106,000 16.7 Vestas V82 (1.65 MW) P 82 3 95,000 18 Advantages of HAWT over VAWT Axis of Rotation It is the main and biggest difference. As the name states, Horizontal Axis Wind Turbine has its axis of rotation parallel to the ground and Vertical Axis Wind Turbine has its axis of rotation perpendicular to ground. Number of blades working at a time If we take a 3-bladed wind turbine for example, then in a Horizontal Axis Wind Turbine, all three blades work at once. whilst in a Vertical Axis Wind Turbine only blade works at a time. Working wind direction VAWTs are omni directional and work in all wind directions while HAWTs only works in a specific wind direction and have to yaw to face the wind before they can begin operation. When wind direction changes the stops, and has to yaw into position. Efficiency at a given wind speed Because all the blade of HAWT work at the same time, its efficiency is much greater than the VAWT. REFERENCES Peter J. Schubel * and Richard J. Crossley Faculty of Engineering, Division of Materials, Mechanics and Structures, University of Nottingham, University Park, Nottingham NG7 2RD, UK Veritas, D.N. Design and Manufacture of Wind Turbine Blades, Offshore and Onshore Turbines; Standard DNV-DS-J102; Det Norske Veritas: Copenhagen, Denmark, 2010. Dolcera.com(online)
Tuesday, September 3, 2019
Reflection On Coaching and Mentoring Essay -- My Ethical and Moral Vie
My ethical and moral views, beliefs, attitudes and values have been fashioned by an up bringing that centred on Christian beliefs. Even though religion was not forced upon me as a child, my mother raised us all with a strong sense of right and wrong. Along with the influence of my family, the Navy has had a big influence on the person I am. The Navy has a strong ethos of what is expected of the personnel that serve; this is made up of the following: Leadership, High Professional Standards, and Courage in Adversity, Determination, Loyalty, Mutual Respect, Discipline, A Sense of Humour, Teamwork, and A Can Do Attitude. Most recently of all though, the biggest thing that has influenced me as a person and a parent has been my experiences of working with young people. This includes acting as a Youth Advisor for Portsmouth City Council, a Mentor for Barnardos and a Youth Advisor for East Sussex County Council. I am currently working in two secondary schools as part of my resettlement from the Navy. This has given me the experience of working with young people living in virtual poverty, in constant trouble with the Police and education services and some young people with varying levels of disabilities. This work has given me a good ability to stay impartial, to be non judgemental and has given me a capacity to treat people a lot more emphatically than I was ever able to. This is because I have been exposed to a greater range of problems and personalities than I have been used to in the Navy. These are qualities that I will hopefully be able to transfer into my coaching practice. During my coaching sessions with Lorraine, it was clear that my beliefs concerning Life / Work Balance were very different to hers; even though this was the... ...y own personal development, I plan to attend further coaching training courses, one of these courses is, MAGIC coaching. This is a course run by the Coaching Academy and it teaches the following variation of the GROW model: Motivation, Assertiveness, Goal achievement, Initiative and Confident communication. This variation of coaching is focused more towards young people, and would therefore fit with my aspirations for the future. I would also be interested in attending a basic level course in NLP, as I believe this particular method will also benefit my coaching with young people. I look forward to reading the latest research regarding learning styles and hope in the future to change my language used during sessions to appeal to the particular style of my coach. Until I am in a position to do this effectively I will try and use a broad spectrum of styles.
The Contribution of Split-Brain Studies to Our Understanding of Brain F
Understanding brain functioning has been a complex phenomena in the field of Biopsychology yielding mountains of research, speculation and differing opinions amongst researchers. Obvious is that, which our brains are comprised up from two hemispheres, the right and the left (in Gazzaniga., 2002). With great scrutiny research has successfully demonstrated that the two hemispheres are highly specialized regions serving differing functions; a concept referred to as lateralization of function (in Passer, Smith, Holt, Bremner, Sutherland & Vliek 2009). For example, the left hemisphere is responsible for speech production whilst the right hemisphere deals with the comprehension of emotional responses. It is also the case that the right hemisphere governs the left side of the body and the left hemisphere governs the right side of the body with the brain displaying contralateral control (in Passer et al., 2009). A common misconception exhibited by most is that the brain acts as a whole, rat her the brain is performs on a unitary level with independent functions (in Pinel., 2009). Because the two cerebral hemispheres are known to communicate via the corpus callosum(in Pinel., 2009) researchers have been particularly intrigued with the idea of what happens when the communication between these hemispheres are disrupted. The corpus callosum is a bridge of nerve tissues in the brain which acts as a communication base (in Pinel., 2009). Damage to the corpus callosum results in a split brain, a situation where the neural connections in the brain are severed resulting in lost mental abilities. The consequences of these lost mental abilities can be demonstrated through a large number of split brain studies with the help two prominent researchers... ...e that the brain serves many different purposes rather than being a unit of its own and that hemispheric differences exist in the brain. With or without communication through the corpus callsoum, the two cerebal hemispheres are perfectly capable of functioning in an independent manner. Research aimed to understand the biological basis of hemispheric function has somewhat reached general consensus. However, individual variations must be acknowledged in split brain patients as cognitive abilities vary significantly. References: Gazzaniga, M. S. (2002). The split brain revisited. Passer, M., Smith, R., Holt, N., Bremner, A., Sutherland, E., & Vliek, M. (2009). Psychology; Science of Mind and Behaviour. (European Edition).Maidenhead: McGraw-Hill. New York. Pinel, J.P.J. (2009). Biopsychology (7th ed.). Allyn and Bacon. Pearson Education Limited.
Monday, September 2, 2019
Family groupings Essay
1. â€Å"Many young children spend more waking hours with caregivers than they do with their primary families†(Swim & Watson, 2011, p. 16). Based on the information presented on pages 9-21 of your course text, explain how the combination of family groupings, continuity of care, primary caregiving, and rich partnerships with families enhance healthy infant development and learning in the context of infant care. It is very important that an infant develops a relationship with at least one primary caregiver for social and emotional development to occur normally. The attachment theory suggests that infants, toddlers and adults need time to create positive emotional bonds with one another. The transition between home and school should be smooth and continuous. The only pathway for achieving that is through partnering with families. Recognizing, supporting, and utilizing this can significantly improve your effectiveness as a caregiver and educator (Swim & Watson, 2011). 2. Developmentally appropriate practice in infant settings requires understanding the bidirectional and reciprocal relationship between the child and his or her environment. Based on Chapters 1 & 2 of your course text, provide a total of three examples of bidirectional and reciprocal relationships that exist between infants, families and child care settings. Based on these examples, describe the role infant settings can play in supporting infant and family development. Three examples of bidirectional and reciprocal relationships are physical, emotional and social language. There is an increased need for teacher education, parent education, including proper selection of care settings, innovative and child centered practices such as continuity of care, effective use of resources. The role infant settings can play in supporting infant and family development is it is important for the primary caregiver to understand that even newborns have a part in their own growth and development. Infa nts have their wants, needs and desires and they must be respected (Swim & Watson). 3. â€Å"A culturally rich curriculum encourages the recognition of cultural differences and helps young families connect with the traditions of their heritage and culture†(Swim & Watson, 2011, p. 21). Based on the discussion of cultural models presented on pages 21-23 of your course text, explain the role of the infant caregiver in providing a culturally rich curriculum. A culturally rich curriculum encourages the recognition of cultural differences and helps young families connect with the traditions of their own heritage and culture. Infant caregivers recognize the richness and opportunities available in order to work with families of diverse ethnic, racial and cultural groups (Swim & Watson). The infant caregiver wants what we all want and that is happy, healthy and successful children. Organizing and ongoing reflection upon what parents tell us about their strategies can help us discover their cultural model for caregiving, and then compare it with the cultural models th at guide our own practice (Watson, 2011).
Sunday, September 1, 2019
Company Case Prius: Leading a Wave of Hybrids Essay
1. What micro-environmental factors affected both the first generation and second generation models of Toyota Prius? How well has to Toyota dealt with these factors? In order for the reader to have an understanding of this question is important to begin by defining Micro-environment. This term is a factor of the Marketing Environment and it consists of the issues that, in one way or another, affect the company’s ability to serve its clientele in a close and direct way. This includes factors such as customers, suppliers, competitors, shareholders, employees and media (among others). Having this in mind, it could be safe to state that the micro-environmental factors affecting the first and second generation of the Toyota Prius are the customers and the competitors. Consumers, getting affected by the gas prices, were looking for an answer to their prayers. Toyota gave them the answer, a vehicle that would allow people to save on gas as well as provide good and efficient service. Once the first generation Prius was released, although not too pretty or fancy, it served to its purposed and customers were buying it. The other factor, competitors, is pretty obvious. Everybody wants a piece of the pie. Auto makers such as Honda started developing and/or implementing the hybrid system on some of their vehicles. Toyota’s answer was to keep developing what already has been a success, the Prius. A second generation was developed and released. This time the new generation was even more fuel efficient. It also included more technical advances, more room and several other factors that would make all types of clientele to be interested. 2. Outline the major macro-environmental factors – demographic, economic, natural, political and cultural – that have affected the Prius sales. How well Toyota dealt with each of these factors? Macro-environmental factors deal the larger societal forces that affect the microenvironment. Some of the factors are demographic, economic, natural, technological, political and cultural forces. With that said, I believe the macro-environmental factor that affected the Prius sales (in a positive way) is the Natural forces. Now, it would not be fair if I do not mention the technology force as well as the economic one. So there is a vehicle that saves on gas, which means that also helps with the pollution. Technological advances are probably the base of the Prius and this gets even better with the second generation. The first generation was fairly basics while the second generation was release with more gadgets and extras. The prices of the gas keep raising non-stop. That fact definitely affected the sales of the Prius, especially in a society dominated by Sport Utility Vehicles (SUVs) Macro-environmental factors Demographics Demographics are the study of human societies in terms of size, location, gender or race among other statistics. Based on these factors organizations develop marketing plans to target possible customers. Economics Basically, economics is the study of how society chooses to use its resources. I believe this factors contributes to the government and other entities to offer incentives towards buying vehicles such as the Prius. Natural This macro-environmental factor involves the use of natural resources to increase the interest of the customers. To be â€Å"green†is what is selling these days. Societies have a great interest and feel very positive about saving the planet. Toyota’s marketing team has utilized such factor in a very positive way to cause sensation about the vehicle. Technological Well, after all, what would society be these days without all the technological advances? New technologies are hitting society constantly. Technology offers the opportunity for enhancement of current products as well as new ones. Toyota, using technology, made customers aware of upcoming vehicle. Utilizing tools such as the Internet it distributes brochures and all types of information about the Prius previous to its release. Political What would a society be without the government and its laws? This force is, with no doubt, connected to the economic one. Toyota, along and other auto makers were able to obtain tax and other incentives for people who would buy the hybrid vehicles. If other forces didn’t cause any interest, this one definitely would. So, now you can save on gas and can also save on taxes. Also, in some cases, you were allowed to drive on the HOV lines even if only one person was driving. Isn’t the government a good thing? Cultural This force along with demographics would set a base for what customers are interested in. Toyota’s strategy hit society in what could probably be the best time. Gas prices are high and people drive vehicles that are not economical. Society is in the need of change and Toyota was offering a solution. 3. Evaluate Toyota’s marketing strategy so far. What has Toyota done well? How might it improve its strategy? In my opinion, and based on the case, Toyota brought a new product with a fairly strong marketing strategy. The only problem that I find is that the vehicle’s target range is limited. The first generation of Prius was very simple and basic. It did not offer all those benefits and gadgets that come standard in many vehicles these days. On the other hand, the second generation brought a lot of changes, specifically technological advances. It also included a bit more of luxury and better style. This time Toyota, in my opinion, was carrying a more power marketing strategy pointed to more types of consumers. I think that Toyota is heading into the right direction in regards of its marketing strategies. Also, the Prius seems to be improving greatly in technological advances. Not only it running more miles per gallon but it also full of gadgets that make people interested about it. It is no myth that Toyota has leaded the automotive market with several of their vehicles. The whole Prius team including its marketing group is doing a great job when it comes to developing and advertising. 4. GM’s marketing director for new ventures, Ken Stewart, says â€Å"if you want to get a lot of hybrids on the road, you put them in vehicles that people are buying now. †This seems to summarize the U. S. auto makers’ approach to hybrids. Would you agree with Mr. Stewart? Why or why not? I believe I would agree with Mr. Stewart. It is a fact that people are buying cars because they like them or need them, and not necessarily because of gas efficiency. Now, if you add the gas efficiency factor it may motivate the consumers. In my opinion, the Prius is one of the ugliest cars that I have ever seen. Would I buy it based on the fact that will save me on gas? I wouldn’t buy it, not only it’s ugly, but also it does not serve to my purposes and tastes. Now, if we were talking about an SUV such as the GM Tahoe, I would probably be interested. Not only serves as an SUV, it also looks good and helps me save gas and to contribute with the environment. The Prius, although very economic on gas, may not be the best car for a family of six. Therefore, having other options that are based on the same concept could be very beneficial for Toyota, or any automaker out there.
Saturday, August 31, 2019
Bracket International Case Study Essay
Case Review The company Bracket International has grown 78 million last year with a cost of goods sold of 61 million. Currently there are three locations in Ohio, Kentucky, and South Carolina. At the Ohio and Kentucky factories are automated flow shops and South Carolina factory focuses on small custom orders and is more of a batched process. However all three locations use a bar coding labels and scanning equipment to monitor and control the flow of material. Currently there are 8,850 items scanned per day at all three factories. The Bracket International employees work 2000 hours each year with a average salary of $5,000. A company is trying to explain why switching to a radio frequency identification device (RFID) system can save money. It will help the company to be on demand operational planning and control. The system could help speed of the process of workflow. Right now the average scan time per items is ten seconds. The ten seconds does not include the employee walking to each location to scan the bar code or replace any demanaged bar code tags. An average replacement of a tag can take as much as five minutes. To purchase a radio frequency identification device for all three locations will cost around $620,000 plus for the software programming and debugging another $480,000. There could be an error with the computer unable to read the scan and the company believes the items is lost or not recorded in the Bracket International system. This could be cost error on the equipment. This system could cut down on audits because it is a readily location inventory. Bracket International has lost a job averaging around two million per year from Wolf Furniture because they were not able to react quickly enough to change in job specification and order size. The Home Depot is expressing Bracket International needs to be more flexible and wants the radio frequency identification. The Home Depot is Bracket International number one supplier. Related Information to Text After reading about Technology and Operation Management section in our text book it give me an understanding of the different type of technology out there. According to the text they do speak about radio frequency identification and explains this technology is considered hard technology. Using technology can have a huge advantage for companies whether it be from productivity improvement from technology or cost savings from technology. Discussion Questions 1) Some advantages of radio frequency identification technology are simple to install or inject the body, human intervention is required to scan a barcode, where in most application a tag can be detected with hands off, have a long reading range, has read/write memory capability, and is able to scan without having to physically scanning (Advantages of RFID 2009). Some disadvantages are difficult to read if tag is in liquid because liquid reflect the radio waves, dead area and orientation problems, security concern, ghost tags, and high cost (RFID FAQ & Tutorial 2010). How do they compare to barcode scanner? There is no line of sight requirement, the tags can stand a harsh environment, long read range, portable database, multiple tag read/write and tracking people, item, and equipment (Pandey, K., 2010). 2) There are a few paybacks for the RFID. One of the payback could be reduce the amount of time it takes an employee to search and found the barcode take ten second while the RFID system is done in 2/100ths seconds. Another payback a RFID system does not having to redo labels that could take over five minutes. The company will be able to reduce inventory because the new system will be done in real time allowing supplier to see what needs to be restocked. All these things have a cost advantages to making the switch. 3) I think the short term would be to start doing research and getting an understanding of what it really takes an employee to do their job. Job shading would give a leader an true understanding of how long it will take to do thing. After the short term happens the long term would be doing the calculating to see if the cost advances to purchasing the equipment. If the company decides to move forward with purchasing the equipment they will need to get the employees to buy into this new equipment. Reference Advantages of RFID. (2009) Retrieve November 6, 2010, from http://www.activewaveinc.com/technology_rfid_advantage.php Moscatiello, R. (2010) Advantages of RFID. Basic Concepts in RFID Technology. Pg. 1 Pandey, K., (2010) Advantages and Disadvantages of RFID Technologies. Retrieve November 6, 2010, from http://www.buzzle.com/articles/advantages-and-disadvantages-of-rfid-technology.html RFID FAQ & Tutorial (2010) Retrieve November 6, 2010, from http://www.idautomation.com/rfid_faq.html#RFID_Advantages
Friday, August 30, 2019
Poetry and Painting
Analysis on the Relationship Between Poetry & Painting An analysis on the relationship between poetry and painting Lope De Vega, in one of his sonnets, refers to two famous contemporaries in a striking way; he calls the Italian poet Marino â€Å"a great painter for the ears†and the Flemish painter Rubens â€Å"a great poet for the eyes†. Six hundred year and 6000 miles away, a similar concept occurs in a parallel situation. The Chinese poet Su Shi, in one of his poems, praises two men, one a poet and the other a painter: â€Å"Tu Fu’s poems are figureless paintings, Han Kan’s paintings are wordless poems. In both poems, a very special relationship is established between poetry and painting. They are considered parallel and comparable; more than that, they take each other’s place. A comparative treatment of the same phenomenon in two widely seperated and obviously unrelated literatures may bring out siginificant differents as well as integritions. Actually, the conversation between poetry and painting has been through centuries, traced back to 6th century until now, different people have different opinions. For Plato, poets and painters are both imitators and their work a third-generation removed from the truth. For Aristotle, â€Å"The poet being an imitator just like the painter or other maker of likenesses, he must necessarily in all instances represent things in one or other of three aspects, either as they were or are, or as they are said or thought to be or to have been, or as they ought to be. †More than five hundred years ago Leonardo da Vinci entered into a stinging debate with a bunch of pompous poets who degraded painting as a mechanical art. Defending the primacy of art, Leonardoâ€â€painter, architect, scientist, and a genius of high Renaissanceâ€â€snapped: â€Å"If you call painting dumb poetry the painter may call poetry blind painting. †He argued that a good painter can provide a more intelligible and beautiful sense experience than a poet because painting satisfies the eye whereas poetry appeals to the ear and seeing is superior to hearing. In the 18th century the playwright and philosopher Gotthold Lessing described the intrinsic difference between ainting and poetry in terms of the distinction between image and word. He rejected the ancient belief that these two arts are in fact similar, or as the Roman poet Horace put it: Ut pictura poesis (painting is like poetry). Lessing also pointed out that the domain of painting is space while the domain of poetry is time. In my opinion, transfering a poem exactly to another form is quite an impossible task because of the unique nature of every vernacular and their peticular idioms. And on the other hand, painting as an art form is unique as well. It can portray astonishingly beautiful or ugly people, or show breathtakingly magnificent or depressingly dull landscapes and still lives and other visual phenomenon, which defy exact verbal description. Generally speaking, objects of the visual world can be represented in painting more accurately than in words. However, poetry has the upper hand in describing emotional states and mental events. A comparison of these two art forms reveals that in many ways both poetry and painting resist conversion, and they mutually defy transference into each other. However, despite their irreconcilable differences, painting and poetry share many common attibutes. With the development of literature and enlargement of understanding about this world, we have to acknowldge the integration of poetry and painting as well. Through five thousand years of continuous civilization, Chinese art has developed a rich language of symbols. By the second century the image of falling leaves, for instance, had become a metaphor for troubled times in which great talent was cast aside and unjustly punished with exile. Magnificent flowers often symbolize beautiful ladies. Rising above a lake they may represent fairies with red hair spins walking above the water and one single lotus flower in the Hua Qing Pool is like the entire world. In spite of its fragmentary posture western culture has produced great artists excelling in different branches of art. Among painters and poets the oeuvre of such artists as Michelangelo, Goethe, William Blake, Apollinaire and Picasso shows the unity of painting and poetry. As the proverb goes, â€Å"there is a poem painting, painting in poetry†. A successful poem, in my perspective, is the one with a relative aesthetic painting in our mind when we read it. That is what we called in Chinese Yi Jing. For example, a famous poem in China â€Å"Shi Zhi Sai Shang†written by Wang Wei, which gives us a picturesque painting in our mind immediately: the desolation and broadness of a frontier fortress, a puff of smoke and the setting sun†¦In terms of painting, painter integrates with poetic beauty. In Song dynasty, the task for getting a professional painter certification required examine to draw a painting according to a piece of poem. Poetry enters the painting, bringing the creativity into the painting. Even the limit of time can also be overcome. In conclusion, although poetry and painting have some differences, they both are important literature forms, we pay more attention to what they bring to us. In my vision painting and poetry invite us to step into a deeper level of reality that lies under the peel of surface appearances. The creativity power of art can play a significant role in ameliorating the human human condition, in making the planet a habitable and welcoming environment for ourselves and for future generations. Without concern, responsibility, care, compassion and love we cannot survive.
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