Globalization, Food Safety and Agricultural Health Standards: Implications for Trade and Public Health

Paper presented at the 6th Annual Scientific Conference of the Chittagong Veterinary and Animal Sciences University, Hotel Agrabad, Chittagong, 4-6 March 2008.Food Consumption/Nutrition/Food Safety, Health Economics and Policy, International Relations/Trade,

Model predictive control for current balancing in a four-phase buck converter

Multiphase buck topology offers smaller ripple current and lower component ratings. This, however, compromises unbalanced output current between each phase of an inductor which leads to over-current and inductor saturation issues. Often when discussing the linear control schemes, it involves the use of superposition theorem to understand the system’s response. However, the limitation of superposition theorem in this application is that it assumes the circuit to be completely linear. For components with nonlinear behaviour such as power switches and diodes, the analytical results may not be accurate resulting to unexpected behaviour as the algorithm is implemented on a real system. Hence, the use of a more advanced control scheme is necessary to improve a system with a non-linear characteristic. This paper proposes a current limit control (CLC) consists of MPC for inner loop control and PID for outer loop control for phase current balancing in a four-phase buck converter. The controller is designed to achieve balanced current for each phase with acceptable response time. The proposed system is designed using MATLAB/Simulink simulation software and verified by a laboratory prototype with a TMS320F28335 as the main controller. Simulation and experimental results are provided to validate the system performance

Livestock ownership, commercial off-take rates and their determinants in Ethiopia

Also available in the ILRI Repository on Livestock Research at http://hdl.handle.net/10568/237Livestock Production/Industries,

Improvement of speed response in four-phase DC–DC converter switching using two shunt voltage-source

This study proposes a technique that is able to improve the speed response of a four-phase DC–DC converter switching. The basic concept of the proposed technique is the inclusion of two shunt-connected voltage sources in series to the converter system. Using a higher input voltage to drive the load, a higher current per microsecond output system will be obtained and reverts to its nominal input upon obtaining desired references. Thus, the transient response observed when using this proposed technique is found to be much faster when compared to the conventional converter. Moreover, this technique is easily implemented as it requires only an additional voltage source, power switch, and power diode. The integrated model of the two shunt voltage-source in a four-phase DC–DC converter was simulated in MATLAB/Simulink and validated against the experimental results of a laboratory prototype, 600 W four-phase DC–DC converter. The novelty of this proposed technique is its ability to provide faster operations for critical loads applications, lower output capacitor and lower operating frequency

Consumer preferences and demand for livestock products in urban Bangladesh

Also available in the ILRI Repository on Livestock Research at http://hdl.handle.net/10568/3009demand, quality, safety, livestock products, Bangladesh, Consumer/Household Economics, Livestock Production/Industries,

Scavenging Poultry for Poverty Alleviation: A review of experiences with a focus on Bangladesh

Report prepared for International Livestock Research Institute.Food Security and Poverty, Livestock Production/Industries,

CONGENITAL CONJOINT TRIPLET KITTENS (TRIPLOPAGUS): A CASE REPORT

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Decision Usefulness Approach to Financial Reporting: A Case for Employees

Financial reporting it centers on about the FRS 101 known as presentation of financial statements. The International Accounting Standard Board (IASB) develop this standard to revised IAS 1 for improvement the qualities when present in the financial statement. FRS 101 is usually based on IAS 1 presentation of financial statements issued by IASB. That means, compliance the FRS 101 also will cause compliance with IAS 1. There are no different between two accounting standards. This paper describes and underlying criticism raised in the decision usefulness approach of financial reporting in the case of employees. The employees of the company can be categorized into two, i.e., the present and prospective employees. This paper examines why the reward system and corporate social responsibility must be used by organizations as an instrument for employees to improve their living conditions. The underlying significant role which employees play in organizational development has drawn considerable attention all over the world because the employees as the key to ensuring tactics and strategis of company's run successfully. The argument is that employees increase the performance of the organizations through efficient and effective information that comes from financial reporting