University of Bahrain

About: University of Bahrain is a education organization based out in Madīnat ‘Īsá, Bahrain. It is known for research contribution in the topics: Thin film & Doping. The organization has 1650 authors who have published 3405 publications receiving 48162 citations. The organization is also known as: Bahrain University & UoB.

Null steering in phased arrays by controlling the positions of selected elements

Abstract: A new technique is presented that is capable of steering nulls in the antenna pattern in the directions of strong interference signals without affecting the main beam. The technique is based on the element position perturbations of selected elements of the antenna array. This technique frees the phase shifters to be used solely for steering the main beam toward the direction of the desired signal. It also freezes the positions of those elements that have insignificant contributions to the nulls. Our results have shown to be comparable to the results obtained from the method of controlling the positions of all elements.

Antibacterial activity of selected medicinal plants against multiple antibiotic resistant uropathogens: a study from Kolli Hills, Tamil Nadu, India.

Abstract: The increasing incidence of antibiotic resistance among bacterial pathogens necessitates medicinal plants as an alternate therapy in restricting the resistant infectious organisms. In this primitive study, the antibiotic resistance of organisms isolated from urinary tract infected patients was evaluated using the National Committee for Clinical Laboratory Standards (NCCLS) method and Multiple Antibiotic Resistance (MAR) index values, and the MAR values was also calculated for plant extracts. The 10 common medicinal plants collected from Kolli hills, Namakkal, south India were extracted using the chloroform, methanol, acetone, ethanol and saponification procedure. The efficacy of the extracts on the uropathogens was tested by agar disc diffusion method in order to analyse the inhibitory activity of plant extract on the organisms. Azadiracta indica A. Juss., Tinospora cordifolia (Wild.) and Euphorbia hirta Linn. exhibited high inhibitory activity against most of the 11 tested organisms followed by Cassia ja...

The Role and Functions of Audit Committees in the Indian Corporate Governance: Empirical Findings

Abstract: This paper examines the composition, focus and functions of audit committees (ACs), the effects of meetings and the criteria used in the selection of members by Indian listed companies from 73 questionnaire responses. The survey was carried out during February-March, 2002. The study reveals that so far only 56.2% of companies have established an AC despite the fact that it is now mandatory. Of those companies which have ACs, 68.3% have between three and six members on ACs. However, only 14.6% of companies have independent nonexecutive directors on the committee, while 90.2% have nonexecutive directors. This shows a lack of independent representation on the committees. The functions of ACs are quite diverse and are classified in three areas: financial statements and reporting, audit planning, and internal control and evaluation. The review of annual audited financial statements, discussion and recommendations of audit fees and review of the effectiveness of internal control were rated very highly by the respondents. The review of note disclosure and scope of external audit work are other important functions performed by ACs. The most important areas for focus are compliance with the standards and regulatory bodies, probing material items and undisclosed liabilities. However, there are statistical differences between medium and large sized companies in the performance of their role. The main criteria used for membership of an AC are: experience and knowledge of business, experience of holding similar positions and accounting and finance expertise. Ownership in the company was not perceived as an important criterion. The majority of companies' AC meetings are held monthly or quarterly. MANOVA analysis reveals that the frequency of AC meetings has an effect on the internal control functions. The study concludes that the concept of an AC is not new in India but their formation is slow and their composition lacks independence. AC functions are still concentrated in the traditional areas of accounting and their role is not changing fast enough to make the corporate governance more effective.