Adolescence is a critical period as the physiological need for nutrients is high relative to energy needs. In addition, eating behavior and lifestyles are formed during this period, which may continue in to adulthood. Interventions to promote healthy nutrition need to occur in adolescence to reverse the adverse health effects of obesity and poor eating habits. Educating children and adolescents can instill positive health behaviors in the early years. Skills-based health education has been shown to make significant contributions to the healthy development of children and adolescents and to have a positive impact on important health risk behaviors. Therefore, this endeavor was undertaken with the objectives to assess dietary knowledge, attitude, behavior among school adolescents in Delhi, to impart the life-skills through training sessions for adopting healthy nutrition behavior among adolescents and to assess the impact of food and nutrition related life-skills training on dietary behavior of the intervention group and compare it with the control group.
Instantaneous active and reactive power (p-q) and current (Id-Iq) Control strategies for extracting the three-phase reference currents for shunt active power filters are compared, evaluating their performance under different source voltage conditions with PI and Fuzzy logic Controllers in MATLAB/SIMULINK environment and also implemented using RTDS Hardware. This book is organized as Section-1 introduces the importance of active power filters and solid state devices; section-2 provides the classifications of active power filter; section-3 provides the details of shunt active filter basic compensation principle; section-4 provides the classifications of control strategies; section-5 provides the details of selection considerations of APF's; section-6 provides the details of technical and economic considerations; section-7 provides the details of DC Link Voltage Regulation; section-8 provides the details of DC Link Voltage Regulation with PI and FLC;Simulation and real time results of p-q and id-iq control strategies with PI controller using MATLAB presented in section-9 and section-10; section-11 provides the comparative study and finally section-12 states all concluding remarks.
This is a simple analogical approach to calculate the reactive power by using proposed method of power flow analysis in the transmission line. The MATLAB is used for power flow analysis and identified the unhealthy bus of a power system. The microcontroller is used for sensing the voltage level of the transmission line. The thyristor controlled reactor and thyristor switched capacitor are used for voltage control where switching control of thyristor is managed by microcontroller by providing appropriate gate pulse according to the condition of the transmission line.
The destructive phenomenon of global warming is developing to more critical and obvious index that causes the melting of polar ice caps and higher sea levels resulting in less land for an increasing population, along with the severe changes in climate. Essentially, the growth of this harsh trend is primarily due to the increase of the greenhouse gases concentration from burning of the fossil fuels. So, traditional approach of producing energy to fulfill the human demand is no longer appropriate; meanwhile, inception of wind energy electrical power systems will be the alternative technologies to bring a better future for all mankind. This book provides a comprehensive explanation of the wind energy potential evaluation technique and a robust sensorless MPPT controller for variable speed PMSG wind turbine stand-alone system modeled in Matlab/Simulink environment which shows the feasibility of the technologies compared to the conventional electrical power generation. The study of the WECS will assist the professionals in wind electrical power generation system, global academic researchers, industrial engineers, or those who may consider in implementing this system
Humans are best capable for adaptation, development, evolution, transmission, success and changes. Historically our culture and society have transformed through the consumption of power, energy and technology. It is technology which has a direct impact on the culture and heritage of humans. Bangladesh has a distinct cultural practice and Internet is contributing to change the cultural patterns of urban people and create a distinctive cultural heritage. This book, based on an intensive anthropological research, focuses on the process of changes brought by Internet Culture giving birth to multi-dimensional opportunities for urban Bangladesh. Similarly this has driven the urban people to see the world globally. Today our practices of language, reading and writing are facing a renewed spirit. Accordingly it is necessary to identify and document the precedents and prospects of Internet Culture where the works of social scientists would bring some new ideas and issues for discussion. This study depicts the picture of urban areas to formulate new hypothesis. We think a true digital Bangladesh is no far away if the opportunities generated by Internet can be fruitfully implemented.
Silicon carbide is the only wide band gap semiconductor that has a native oxide, and a leading candidate for development of next-generation, energy efficient, high power metal-oxide-semiconductor field effect transistors (MOSFETs). Progress in this technology has been limited by the semiconductor-dielectric interface structure and its effect on the inversion layer mobility. The major objective of this work is to study and improve 4H-SiC MOSFET interface structure, defect states and inversion layer mobility on the (11-20) crystal face of SiC (a-face), employing nitrogen and phosphorous passivation. We also use these results to explore the effect of reactive ion etching on the a-face, an important aspect of processing optimum power devices. We correlate electrical measurements, i.e. current-voltage (I-V) and capacitance-voltage (C-V) with physical characterization including X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), transmission electron microscopy (TEM), secondary ion mass spectrometry (SIMS) and medium energy ion scattering (MEIS).
In the small wind energy domain, the existing knowledge of the system of a Permanent Magnet Generator (PMG)-based small wind turbine system design and performance is quite rich. In sharp contrast, studies with emphasis on the system of Wound Rotor Induction Generator (WRIG)-based small wind turbine system are very few. However, despite such rapid growth of the PMG-based system, it is difficult to predict the future for both systems. This is because ideas borrowed from other fields or other applications could have profound effects on future penetration. In this context, this research presents a performance and reliability investigation of both systems with a special focus on the power electronics and led the future of wind energy conversion system in an unique direction.
The total capacity of 172 wind turbines in Hungary is 329.325 MW. Their yearly all electric power output is over 600 GWh. Hungary’s total exploitable wind power potential is 532.8 PJ/year. The aim of research shown in this book is to work out those statistical methods which permit of the increase of efficiency of wind energy utilization. First the statistical structure of wind directions is shown: the characteristic and energetic prevailing wind directions, alteration of energetic parameters of the wind directions, connection between the change of wind directions and the potential wind energy. The next part is the statistical structure of wind speed, i.e., fitting and estimation of frequency distributions of daily and monthly mean wind speeds with the Weibull and other distributions at different heights. The last part includes the statistical structure of potential wind energy: basic statistics and temporal change of the monthly mean specific wind power, climatic conditions for operation of wind turbines, and a statistical model for estimating daily electricity produced by wind energy. The book is recommended to researchers to develop its methods, and to users of wind energy.
100A DC Digital Multifunction Power Meter Energy Monitor Module Voltmeter Ammeter 6.5V-100V Description: Working Voltage DC 6.5V-100V Measuring Voltage DC 6.5V-100V Measuring Current 0-100A Rated Power 10000W Display LCD Display Format Power 0.0-999.9W (1KW) Energy 0-999Wh(10KWh) Voltage 6.50-99.99V Current 0.00-100.00A Feature: 100A DC multifunction power meter LCD display wih backlight, easy to read Power, current, voltage and energy display and monitor timely easy to know electric energy consumption Electric energy clear function, perfect for various device monitor separately Overload alarm function (over power alarm threshold, the backlight and voltage flashing alarm) Power memory, shave the power parameter when power down, safe to use Operaqtion Tips: 1. The backlight control By short press the button to turn on or off the backlight, In the bakclight mode,the data will automatically store when power down 2. The energy cleared Step 1: Press the power button 5 seconds until the digital display "CLr" then release the button; Step 2: Now it is in the "energy clear" mode, press the button again, the energy data is cleared and stop flashing; Step 3: If in the "energy clear" mode you do not press the button in 5 seconds,then the energy data will not be cleared 3. Set power alarm value Step 1: Press the button, when the power area display "SET " release button, Step 2:it is in the pweor alarming setting mode, the voltage area displays the highest value of the voltage alarm,the current area displays the lowest value of the voltage alarm. Then you can press the button quickly to increase the value" +1" when there is no key operation more than three seconds, Package included: 1X 100A Power Meter
Microfinance recognizes that poor people are remarkable reservoirs of energy and knowledge. And while the lack of financial services is a sign of poverty, today it is also understood as an untapped opportunity to create markets, bring people in from the margins and give them the tools with which to help themselves. Where once the poor were commonly seen as passive victims, microfinance recognizes that poor people are remarkable reservoirs of energy and knowledge. And while the lack of financial services is a sign of poverty, today it is also understood as an untapped opportunity to create markets, bring people in from the margins and give them the tools with which to help themselves. Kofi Annan
There is an asymmetry between India and Pakistan in conventional military capabilities. India is superior militarily, politically and economically than Pakistan. The growing defence production gap and Indo-US nuclear deal is disturbing the balance of power. The imbalance has trigger the conventional, missile and nuclear arms races between two countries. It severely destabilizes the security situation and deterrence stability in South Asia. To maintain peace and stability, it is necessary for India and Pakistan to shift their focuses from traditional security to non-traditional security. With the changing dynamics of security,India and Pakistan can change the nature of their relationship as nuclear neighbors through establishing bilateral arms control regime, increasing co-operation in economic field, using media as negotiating tool and through public diplomacy and youth-culture exchange program.
Three major goals of renewable energy policy include security of supply, environmental protection and economic development and stability. One way in which our society can work towards achieving these goals is through the addition of wind and other renewable energy sources to the electrical grid. While Nova Scotia has set forth many goals and targets to encourage renewable energy development in the province, many barriers exist. This qualitative study aims to identify these barriers and propose recommendations for overcoming or mitigating them in light of realizing an effective wind energy regime. The barriers were identified and recommendations developed following an extensive literature review and consultation with 17 stakeholders within the electrical power generation sector between September 2008 and April 2009.
This is a study that analyzes the small scale wind energy markets in Mumbai, focusing on questions: How feasible is the wind energy for SME businesses in Mumbai, and what are the main challenges and opportunities of small scale wind energy in Mumbai? The study is a qualitative case study, in which, the data has been collected through observing the markets by visiting wind energy sites and companies, interviewing and meeting potential customers and other stakeholders in the market. Theoretical framework consists of development of a marketing strategy, segmentation of the markets and a marketing mix. The market is new and almost untouched, most of the companies interviewed have not been offered wind energy. The demand for energy is high and growing with speed. The energy shortage during the year 2008 was 9.3 % and the peak shortage 12.6 %. The growth of the economy in India is one of the highest in the world and it is burdening the nature with CO2 emissions because India is still mainly depending on fossil fuels. There is a need for new solutions to ensure the energy supply and then continuity of the growth of the economy.
This research evaluates the impact of wild dogs on beef cattle calves in extensive grazing systems. Although annual calf loss caused by wild dogs can be as high as 32%, in most years predation loss could not be detected. Surprisingly, calf predation was higher and occurred more often where baiting had occurred compared to adjoining areas where baiting had not occurred. I speculate that dispersing wild dogs that re-colonise baited areas kill more calves than wild dogs in stable packs because they lack the group hunting skills and group size to efficiently switch to larger (kangaroo) prey when smaller, preferred prey become unavailable (especially during drought). 1080 baiting programs had no detectable short or long-term impact on reptile, bird, feral cat or native carnivore activity. These data show that while wild dogs have significant capacity to prey on beef cattle calves, wild dog control is unnecessary provided alternative prey resources are available and wild dogs are in stable populations. Coordinating control at a regional level to avoid wild dogs re-colonising is only beneficial in years, seasons or situations of low, preferred-prey availability.
Lowest-level cache misses are satisfied by the main memory through a specific address mapping scheme that is hard-coded in the memory controller. A dynamic address mapping scheme technique is investigated to provide higher performance and lower power consumption, and a method to throttle memory to meet a specific power budget. Several experiments are conducted on single and multithreaded synthetic memory traces -to study extreme cases- and validate the usability of the proposed dynamic mapping scheme over the fixed one. Results show that applications’ performance varies according to the mapping scheme used, and a dynamic mapping scheme achieves up to 2x increase in peak bandwidth utilization and around 30% higher energy efficiency than a system using only a single fixed scheme Moreover, the technique can be used to limit memory accesses into a subset of the memory devices by controlling data allocation at a finer granularity, providing a method to throttle main memory by allowing un-accessed devices to be put into power-down mode, hence saving power to meet a certain power budget.