Paul Scalia - Homily at the Funeral Mass for Antonin Scalia free essay sample

Case Analysis-Zenith Essay Example

Case Analysis Case Analysis-Zenith Essay Case Analysis-Zenith Essay Case Analysis Zenith In the case, the situation is that Zenith Electronics Corporation considers marketing research to forecast demand for a new technology, High Definition Television (HDTV). Zenith’s previous marketing research methods and the alternative forecasting plans are described in the case. Zenith is a company that has been played successfully in TV industry and has done marketing research previously for its various products. Its previous marketing research is based on the historical data such as previous technology trends. However, there is no historical data for HDTV since it is a new technology. So, Zenith first think about other information such as Color TV’s penetration rate to know if HDTV adoption would be similar to any other product’s adoption. And the company looked at how marketing plays a role in forecasting demand for HDTV. Zenith formed a marketing team to better do research on consumer’s acceptance and demand for HDTV. The marketing team first decided to do the Aspect Ratio Study to see if customers really want the HDTV’s wider screen which is 16:9 even though it costs premium of $300 and broadcasters would still produce 4:3 aspect ratios. This study is to find the customers’ preference as price changes, program content changes, and diagonal size changes. For this study, marketing team recruited participants who have bought TV in past year from the shopping mall in a single city. Survey was conducted as a paired-comparison conjoint methodology. Participants are exposed to the situation to choose one over the other one in two options. And they are also asked to display their various measures of preference like overall preference. The way this study is conducted is well related to the main objectives. Because HDTV’s 16:9 aspect ratio is inevitable feature, it is important to first make sure if customers are satisfied with this feature despite of various changes. In this study, researchers will look at how customers would react toward different price level for this wider screen TV. So, from this point, Zenith can find out if it can make profit and if customers are willing to pay premium for HDTV. Also Zenith considered different circumstances such as customers might still get 4:3 signals in their 16:9 aspect ratios which results side-curtained display. By making the study situations like the one can happen in real world, researchers can get more accurate and reasonable data from the study. As looking at this research technique in the other side, there are some possible shortcomings or errors in the Aspect Ratio Study. The place where participants would be recruited is limited. They would be selected from a shopping mall only in a single city. Because the place is limited to a single city, there is possibility the data would be not accurate and would not work for other cities. As another potential error in this study is that the result data would not be a very detailed or useful to forecast actual demand for HDTV. Because this is just a repeated comparison of two options and making choices, customers might not have enough time to be sure they actually want one option. Overall result may indicate how customers make trade-offs and customer preference. However, in real world, there isn’t always the situation of choosing one thing over another one. There are countless options of values to choose for customers. Besides this Aspect Ratio Study, five other alternative plans to consider are described in the end of the case. First one to consider is Dealer Research. This technique would be helpful to understand dealer’s concerns and to build up a good relationship with dealers. But my critique is that customers might be skeptical towards dealers even though this research would help controlling the sales channel to influence customers in retail stores. Zenith also considers Secondary Source Research as another option. This research is attractive in a fact that it could be done immediately. However, because HDTV is a very new technology, it would not be accurate to forecast the growth of HDTV industry by using historical data on all other electronics. For rest of research plans’ biggest shortcoming is the time. HDTV innovators and qualitative research on early adoption could be placed in next year. Also for this research, it only aims for innovators and early adopters. So there is possibility that data would not reach customers after them. And HDTV/NTSC-TV preference test can also be done in next year. This study actually needs to have a working model of HDTV. So it might be more effective. However, developing the program for the study might cost a lot. As a last alternative, HDTV consumer awareness/†halo effect† survey is the most time-consuming study. This can be done only after HDTV is introduced in the market. So, there is a risk of failure or a possibility of negative impact on company when they actually launched HDTV production. If the introduction isn’t effective enough, it would be very high-cost to do this survey.

Leadership models Essay Example | Topics and Well Written Essays - 750 words

Leadership models - Essay Example In this regard, the paper will endeavor to identify and analyze different characteristics of change models, and will attempt to discuss its advantages and drawbacks as well. In any organization, commitment plays a significant and decisive role in the success of any change process. However, studies indicated that organizations and business experts were unable to give importance to the notion of commitment that is an imperative component in the process. For such purpose, the identified change model has attempted to provide an illustration of the process of creation of commitment. Specifically, this model has provided three phases that are responsible for the development of commitment, and may have a significant impact on any change process in the organization (Burke, 2007). This model suggests that support is very crucial for any change, and thus, the first phase of ‘Inform’ focuses on the formation of basis for expansion of essential support. In specific, inform phase put efforts by providing awareness to individuals that is necessary for alteration in their behavior, a step that allows positive change in the organization. After some awareness, this model brings individuals and organizations into ‘Educate’ phase that involves recognition of the change and its effect that will create an environment encouraging individual decisions in the organization. Thus, advocates of this model argue that it is very imperative for employers to present a positive and efficient outcome of the change that will facilitate all the stakeholders to take their decision in favor of the change during this phase. After stages of information and education, the model has suggested the last phase of ‘commit’ that begins the implementation of change in the organization. In other words, the first two stages are the preparatory phases and the third one can be termed as executive phase (Burke, 2007). In brief, one of the advantages of this system is

Marketing Objectives Essay Example | Topics and Well Written Essays - 1250 words

Marketing Objectives - Essay Example The new product is code named as M2030. Marketing Objectives The target market of the company is all the households and offices of that are looking for lighter and efficient products. The product is aimed for UK market. M2030 will be a good choice for families considering the product’s ease and efficiency. â€Å"UK Households spent an average of ?474 per week in 2010.† (Office of National Statistics, 2011) As per the statistics department, fuel and power form one of the major components of the expense items. It is also seen that consumers have spent more disposable income for consumer durables in 2010. This trend is expected to continue in 2011. The product will be more focused on London, Northern Ireland, South East, East and South West. (Office of National Statistics, 2011) The marketing objectives of the product M2030 are as follows: 1. To become the best in class product in the product category 2. To make the product available in all the leading electronics stores 3 . To offer the product to the customers at a highly competitive price 4. To create an impact in the minds of the customers regarding the benefits of the product. This report will further look into the detailed aspects of marketing of M2030 in UK. A detailed analysis of the competition and environment is also included in the report. Competitive Situation Analysis G’s products can be classified based on the three way consumer classification system of convenience, shopping and specialty goods. The products of G Electronics are kettles, toasters, juicers, mixers, ovens, dish washers, and micro waves. All these products can be classified as Shopping Goods. (Kurtz, 2011) The following five force model analysis will analyze the competitive situation of Company G. Supplier Power: The Company maintains excellent relationships with the existing suppliers. But for producing M2030, the company requires new materials which are different from those supplied by the existing suppliers. The s upplier power is comparatively less for G as the numbers of suppliers are high. Threat of Substitutes: The threat of substitutes is comparatively higher for Company G. Products that are not as efficient as M2030 are available at a lesser price in the market. But then this happens only if the customers prefer cost benefit over efficiency. Switching cost is comparatively low for this product category. Buyer Power: Buyer power is very high in this case. The customers are flooded with numerous products by various brands. All products differs each other in terms of the design, price, efficiency, etc. Buyer concentration is high for microwave oven market. Also, the chances for customers to have inclination towards a particular brand are very high. Threat of new Entrants: Threat of new entrants is low in this industry though there are big companies who still foray into unrelated businesses. Brand identity and research costs are two main factors that hinder companies from entering this indu stry. There is definitely a threat from big companies who has the capital and knowhow to enter the segment. Degree of Rivalry: Some of the strongest players in the industry are Philips, IFB, Panasonic, Samsung, Siemens, LG, Sharp, Whirlpool, Daewoo, etc. There are just the leading brands. Apart from this there are other brands that has significant cumulative market share. Therefore, the degree of rivalry is high in this industry. (Mindtools, 2011) SWOT Analysis

Question .. Marine scince Essay Example | Topics and Well Written Essays - 9000 words

Question .. Marine scince - Essay Example 2 Figure 2: The eight bearings of successful yacht management 3 Figure 3: Captain’s Standing Orders, Ship’s Standing Orders, and the Daily Orders - the three important administrative tools for a large motor yacht. 5 Figure 4: The five-fold objectives for the master of the vessel 12 Figure 5: The four-fold objectives of a crisis management team 14 Figure 6: The five conditions for entitlement of GA 23 Figure 7: Three important objectives from the cargo owner's point of view 28 Figure 8: Methodology for computation of loss of income 36 Photo credit Cover page URL: http://www.imo.org/OurWork/Safety/FireProtection/PublishingImages/fire.jpg Section 1: Maintaining Yacht Operational Standards Case brief As the Ship/Yacht Manager of EITHER a 25,000 tonne merchant ship OR a 2,900 tonne motor yacht review the mechanisms by which you would ensure that your operational standards are maintained on board your vessel. Your answer should include but not be limited to:   ship/yacht ma nagement;   organisational structure;   consideration of routine and emergency operations.   1.1 Yacht management, organisation

Fuzzy Logic Based Smart Solar Power MPPT

Fuzzy Logic Based Smart Solar Power MPPT Design and Optimization of a Fuzzy Logic Based Smart Solar Power Maximum Power Point Tracker A. KocabaÃ…Å ¸ and H.Ä °. OkumuÃ…Å ¸ Karadeniz Technical University, Trabzon/Turkey Abstract- As the issue of efficiency is one of the most important fundamentals of solar power generation, maximum power point tracking (MPPT) systems have an important duty in solar power management systems in solar power generation. This paper includes study of the design and improvement of fuzzy logic based solar power MPPT, and the methodology to achieve the best system performance. MPPT system was evaluated at the DC-DC power converters ability of impedance conversion point of view and cooperation of fuzzy logic theory. The parameters of fuzzy inference system are optimized to obtain the fastest and accurate system responses. The performance of the proposed fuzzy logic based MPPT under various operating conditions compared and improvement of this performance is dealt with. The fuzzy logic MPPT function realized using a buck-boost power converter. Computer simulations practiced and simulation results also represented. Keywords- Maximum Power Point Tracking, Fuzzy Logic Control, Solar Power Generation. Solar power is one of the most harmless and cleanest, plentiful supply of energy in the world. It is unfailing and like to be our fundamental supply of power in future [1]-[2]. Solar power has already used widely for industrial, commercial, residential and military applications. Performance of solar power generation by photovoltaic (PV) cells depends on the environmental conditions such as insolation, sunlight tilt, load variations, airmass and cell temperature [10]. Power converter units should be associated with the PV cells and the load to control the power flow from the PV cells to the load. PV systems use MPPT systems to maximize power output, by the ability of continually arranging the duty ratio increment command of the switching device in the power converter unit. Algorithms used in MPPT systems maximize power extractions of PV cells by controlling the duty ratio of the power converter with the changing PV cell output variable combinations like changes in power versus changes in voltage etc. MPPT algorithms such as perturb and observe, incremental conductance have been evaluated until now. [3]. Unchanging step size for the control signal, increment of the duty ratio command, used in these methods. Too small steps sizes cause slow tracking process and too large step sizes cause oscillations around the maximum power point (MPP). To perform automatically adjusting step sizes, variable step sizing algorithms such as fuzzy logic has been developed [4]-[7]. Specification of fuzzy logic controllers is made according to their skill of simulating human thinking. Different than conventional controllers, fuzzy controllers have the ability to experimental methods and their results to design variable step sizes of control signals without the need of understanding the systems mathematical model [9]. Effectiveness of the MPPT algorithm is directly related with the input and the output variables that are selected for the system. In general for output variable, duty ratio of the power switch selected. As input variables; power (P) versus voltage (V) slope and changes of the slope, P-V slope and variation of power, variation of power and variation of voltage, sum of conductance and increment of conductance would be selected [8]. In this paper as inputs of the controller variation of power and variation of voltage, as an out put duty ratio of the power switch selected. Sunpower SPR-305E-WHT-D (One series module and one parallel strings) PV panel used for simulations in this paper. The characteristics of the PV panel at 25  °C and at various irradiation levels are shown in Figure 1. The characteristics of the PV panel at 1000 W/m2 and at various temperature levels are shown in Figure 2. To make the analysis simple, we have worked on resistive load. Figure 3 illustrates the circuitry of PV panel and resistive load, and current (I)-voltage (V) characteristics with an irradiation 1000 W/m2 and temperature of 25  °C. The intersection of the I-V characteristic curve (blue) of the PV panel and load I-V curve (red) is the operating point of the system. From this figure it can be observed that the operating point changes with the change of the load value. The maximum power point (MPP) can be achieved through proper selection of the load. Maximum power may be extracted from the PV array by incorporating an intelligent mechanism altering the load resistan ce of the PV array. Power converters are usually used to achieve this purpose. Figure 1. The characteristics of the PV panel at 25  °C and at various irradiation levels. Figure 2. The characteristics of the PV panel at 1000 W/m2 and at various temperature levels. Figure 3. PV system with resistive load Figure 4 shows the block diagram of the investigated MPPT system. The system includes a PV panel, a buck-boost power converter and a fuzzy logic based MPPT controller. The function of controlling power flow from source to the load is carried out by the zeta type buck-boost converter as shown in Figure 5. The values of converter circuit elements are Lin = 11  µH, L1 = 378  µH, CIN = C1 = 1000  µF and CPV = 680  µF. The pulse width modulation (PWM) switching frequency was set to 200 kHz. Internal resistances were ignored to obtain (1) on the converters input and output voltage equation in steady state: (1) If we assume that converter operates lossless with a resistive load RL, the value of the power obtained from this PV system would be: (2) It is demonstrated additionally, in Figure 5, that P-V curves at miscellaneous irradiation levels according (2) and miscellaneous duty ratio commands with the ohmic load 3 à ¢Ã¢â‚¬Å¾Ã‚ ¦. The intersections show the operating points of PV system. In this study fuzzy theory is used to design the MPPT controller. Required fuzzy input variables are generated by fuzzy MPPT controllers by reading voltage and current signals obtained from the PV panel. The fuzzy input variables would then can be used to calculate the increment of the duty ratio command for adjusting operating point of the PV panel in order to maximize the power extraction. In Figure 6 the flowchart of the calculation process illustrated. Designs of fuzzy controllers are varies according to the input variables selected. As mentioned before in this paper as input variables, variation of power and variation of voltage of the PV array selected. Figure 4. Solar MPPT system. Figure 5. Power converter and PV power characteristics. Figure 6. Flowchart of calculation process. A. Fuzzy MPPT Tracking Algorithm In this study fuzzy logic MPPT system used variations of PV cell power output (à ¢Ã‹â€ Ã¢â‚¬  PPV) and variations of voltage (à ¢Ã‹â€ Ã¢â‚¬  VPV) as the fuzzy input variables. By using MATLAB Simulink proposed solar power maximum power point tracking system implemented and universe of discourse (UOC) of input and output membership functions determined. After determination of UOD membership functions, they are grouped with the names negative big, negative small, zero, positive small, positive big (NB, NS, ZE, PS, PB). Fuzzy rules database is shown in Figure 7. Iterations made by moving on the P-V slopes specified regions as shown in the figure 7. Figure 7. Fuzzy rules for algorithm using à ¢Ã‹â€ Ã¢â‚¬  PPV and à ¢Ã‹â€ Ã¢â‚¬  VPV as the inputs. First of all symmetric membership functions used in the simulations as shown in Figure 9 and then asymmetrical membership functions used as shown in Figure 10. The performance difference compared then. For fuzzification; Mamdani method and for defuzzification; centre of gravity method used in this study. Fuzzy interface system evaluated by using MATLAB Simulink fuzzy logic toolbox. Figure 8. Fuzzy controller s surface of rule base. Figure 9. (a) Membership function for à ¢Ã‹â€ Ã¢â‚¬  PPV (b) Membership function for à ¢Ã‹â€ Ã¢â‚¬  VPV (c) Membership function for increment of duty ratio command. Figure 10. Asymmetrical input membership functions (a) Membership function for à ¢Ã‹â€ Ã¢â‚¬  PPV (b) Membership function for à ¢Ã‹â€ Ã¢â‚¬  VPV (c) Membership function for increment of duty ratio command. Purposed MPPT system is simulated by using different types of membership functions for comparison and validation. MATLAB/Simulink model block diagram of the system is shown in Figure 11. Figure 11. MATLAB/Simulink model block diagram of the system By using membership functions shown in Figure 9 the simulation results obtained as shown in Figure 12 and by using membership functions shown in Figure 10 the simulation results obtained as shown in Figure 13. Figure 12. Simulation results (symmetrical membership functions used) Figure 13. Simulation results (asymmetrical membership functions used) As shown in figures above when symmetrical membership functions used the fuzzy controlling system was unable to respond quickly to the rapid changes of irradiation so that fitting time of output power curve was longer and this is a disadvantage of the controlling system that is undesired. Beside at low irradiance levels MPPT controller couldnt produce accurate control signals and PV panels operating point was different than the maximum power point. The performance difference of the designed system when two types of membership functions used respectively can be seen more clearly from Figure 14. Figure 14. Output power of PV panel. Here we can see the disadvantages of using symmetrical membership functions. To overcome this problem and improve the system response speed to the changes of irradiation then asymmetrical membership functions has developed. Another benefit of developed system is that, at low irradiation levels precision of MPPT is more higher. In this paper a fuzzy logic based solar maximum power point tracking system was designed and different types of membership functions were used to optimize system power generation performance. To achieve the goal of higher precision and fastest system responses to the changes of irradiation levels different types of membership functions of inputs of fuzzy inference system were researched and compared with each other. It was revealed that using asymmetrical membership functions in the fuzzy logic controller had improved system performance at all operating conditions. From the results of simulations it can be inferred that the system performance is directly related with the optimization of the membership functions of fuzzy inference system. This study also leads to the study of the designing methodology of optimization of asymmetrical membership functions for better system performance. References [1] International Energy Agency. Technology Roadmap: Solar Photovoltaic Energy, IEA Publications: Paris, France, 2014. [2] K. Tomabechi, Energy Resources in the Future. Energies 2010, pp. 686-695 [3]N. Femia, G. Petrone, G. Spagnuolo, M. Vitellio, Optimization of Perturb and Observe Maximum Power Point Tracking Method. IEEE Trans. Power Electron. 2005, pp. 963-973. [4]T. Yong, B. Xia, Z. Xu, W. Sun, Modified Asymmetrical Variable Step Size Incremental Conductance Maximum Power Point Tracking Method for Photovoltaic Systems. J. Power Electron. 2014, pp. 156-164. [5]C.S. Chin, P. Neelakantan, H.P. Yoong, K.T.K. Teo, Optimisation of Fuzzy Based Maximum Power Point Tracking in PV System for Rapidly Changing Solar Irradiance. Trans. Sol. Energy Plan. 2011, pp. 130-137 [6]T. Radjai, P.J. Gaubert, L. Rahmani, The new FLC-Variable Incremental Conductance MPPT Direct Control Method Using Cuk Converter. In Proceedings of the 2014 IEEE 23rd International Symposium on Industrial Electronics (IEIE), Istanbul, 2014, pp. 2508-2513. [7]R. Rahmani, M. Seyedmahmoudian, S. Mekhilef, R. Yusof, Implementation of Fuzzy Logic Maximum Power Point Tracking Controller for Photovoltaic System. 2013, pp.209-218. [8]J-K. Shiau, Y-C. Wei, B-C. C, A Study on the Fuzzy Logic Based Solar Power MPPT Algorithms Using Different Fuzzy Input Variables. ISSN 1999-4893, 2015. [9]T.J. Ross, Fuzzy Logic With Engineering Applications, vol 2, pp. 1-652. [10]R. Hernanz, C. Martin, Z. Belver, L. Leseka, Z. Guerrero, P. Perez, Modelling of Photovoltaic Module., International Conference on Renewable Energies and Power Quality, 2010.

The Effects of Losing Rainforest :: essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚  According to the article satellite images reflect that the Amazon rainforest is diminishing at an enormous rate. About 10,000 square miles of this beautiful forest is being lost to pastures for grazing, soybean plantations, and illegal logging. Since the year before there has been a forty percent increase in the deforestation of the Amazon forest. The Amazon is the world’s largest tropical rainforest. They expect this horrible trend to only become worse. Some conclude that if the forest is not protected that it will be wiped out in only eighty years!   Ã‚  Ã‚  Ã‚  Ã‚  The destruction of our earth’s rainforest is very depressing. Last semester I took Ecol 1000 and this class deals with all of the horrible things humans do to our planet. I didn’t realize that the rainforests were being destroyed at such a dramatic pace. People use a technique called â€Å"slash and burn† which enables them to clear plots in order for cattle or for other agricultural purposes. The rainforest provides a habitat for a wide array of species. This is not fair for people to go in and take over there homes. The destruction of the rainforests has intense adverse affects on lots of differing things. Rainforest not only house a great number of species of insects and trees but it also holds cures for diseases. The destruction of the rainforest has not really been proven how it will affect us because there is so much information to be gathered. We do not know all of the consequences that we will endure once all of the trees are gone and all of the wild life has been destroyed.   Ã‚  Ã‚  Ã‚  Ã‚  It is scary to think about the consequences we may suffer. Once all of these magnificent forests are gone the green house gas levels will increase and we also don’t know all of the harmful effects that this may cause. We need to do everything possible to develop a way to better manage the destruction of our rainforest before it is to late!   Ã‚  Ã‚  Ã‚  Ã‚   Summary   Ã‚  Ã‚  Ã‚  Ã‚  As our population grows every year, we lose very valuable resources. People are continuously reducing the biodiversity of our planet. The loss of biodiversity with our tropical rainforests, oceans, and lakes are very harmful and unpredictable.  Ã‚  Ã‚  Ã‚  Ã‚     Ã‚  Ã‚  Ã‚  Ã‚  Rainforest are so rich with various species that it is highly doubtful that we will ever encounter them all. Rainforest are being destroyed by developing nations in order for homes, agriculture, and other various reasons.