An improved modeling method to determine the model parameters of photovoltaic (PV) modules using differential evolution (DE)

To accurately model the PV module, it is crucial to include the effects of irradiance and temperature when computing the value of the model parameters. Considering the importance of this issue, this paper proposes an improved modeling approach using differential evolution (DE) method. Unlike other PV modeling techniques, this approach enables the computation of model parameters at any irradiance and temperature point using only the information provided by the manufacturer’s data sheet. The key to this improvement is the ability of DE to simultaneously compute all the model parameters at different irradiance and temperature. To validate the accuracy of the proposed model, three PV modules of different types (multi-crystalline, mono-crystalline and thin-film) are tested. The performance of the model is evaluated against the popular single diode model with series resistance Rs. It is found that the proposed model gives superior results for any irradiance and temperature variations. The modeling method is useful for PV simulator developers who require comprehensive and accurate model for the PV module

A new method for calculating the economic benefits of varying degrees of power factor correction for industrial plant loads

A comparative study of the economic benefits that can be obtained from different degrees of power factor correction for medium and small scale industrial installations is shown. A new approach for precise calculation of kws and kvars required at different power factors is presented. These calculated values are used to find the return on investments for the capacitors needed for power factor correction. The developed method is easy to use, cost effective, accurate and will help electrical engineers with minimum knowledge of power systems to precisely determine the savings available by improving the power factor of an industrial load

[De] Constructing the Feminine : Addressing the Postmodern Feminist Syndrome

The quintessential attachment of postmodernism with challenging the master codes and metanarratives makes it a critical stand point with an almost charismatic disposition. Postmodernism takes feminism as an inclusive category, something which has actually hampered the individuation and actual positioning of the later. Proclaiming to benefit feminism by encompassing and addressing all its concerns in a radically new way, Postmodernism appears to be impeding the development of the later in a certain way. The greatest damage it has done is the extermination of the essential identity of the woman as ‘female’. The article investigates what adverse effects postmodernism imparts to the feminist agenda, especially when mishandled at the hands of Eurocentric feminism. It also looks at its positive openings that can profit feminism when specifically studied in Arab and Asian contexts.  There is also a suggestion of liberating feminism from the master frame of postmodernism

Regulatory Mechanisms of Securities Trading in Malaysia (with Special Reference to Insider Trading)

In 1993, Malaysia established a Securities Commission to make the securities markets more secure and efficient, and to better control insider trading. This Article first presents an overview of the structure of the Securities Commission and the responsibilities of the various divisions and officers. Second, it reviews the common law and statutory law on which the Commission and other government agencies must rely to regulate the securities markets