Md Helal Uddin Molla, Md Abdur Razzak and M.S. Alam
The purpose of this paper is to present an analytical approximate technique to solve nonlinear conservative oscillator based on the He’s energy balance method (improved version…
Abstract
Purpose
The purpose of this paper is to present an analytical approximate technique to solve nonlinear conservative oscillator based on the He’s energy balance method (improved version recently presented by Khan and Mirzabeigy). The method is illustrated by solving double well Duffing oscillator.
Design/methodology/approach
The Duffing equation with a double-well potential (with a negative linear stiffness) is an important model of a mass particle moving in a symmetric double well potential. This form of the equation also appears in the transverse vibrations of a beam when the transverse and longitudinal deflections are coupled (Thompsen, 2003).
Findings
The approximate solutions obtained by the present technique have good agreement with the numerical solution and also provide better results than other existing methods.
Originality/value
The results are more accurate than those obtained by other existing methods. The relative errors obtained by the present paper are less than those obtained by other existing methods. Therefore, the present technique is very effective and convenient for solving nonlinear conservative oscillator.
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Md. Helal Uddin Molla, Md. Abdur Razzak and M.S. Alam
The purpose of this paper is to present an analytical technique, based on the He’s energy balance method (an improved version recently presented by Khan et al.), to obtain the…
Abstract
Purpose
The purpose of this paper is to present an analytical technique, based on the He’s energy balance method (an improved version recently presented by Khan et al.), to obtain the approximate solution of quadratic nonlinear oscillator (QNO).
Design/methodology/approach
This oscillator (QNO) is used as a mathematical model of the human eardrum oscillation.
Findings
It has been shown that the results by the present technique are very close to the numerical solution.
Originality/value
The results obtained in this paper are compared with those obtained by Hu (harmonic balance method) and Khan et al. The result shows that the method is more accurate and effective than harmonic balance as well as improved energy balance methods.
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Md Abdul Malek and Muhammad Abdur Razzak
This paper aims to demonstrate the specialty of the elderly issues and acknowledge the existence of their specific human rights that propose for a special treatment to be given or…
Abstract
Purpose
This paper aims to demonstrate the specialty of the elderly issues and acknowledge the existence of their specific human rights that propose for a special treatment to be given or shown to them as priority as women or children, etc. Indubitably, the very issue is timely in all perspective. Because it is now axiomatic that the fastest growing elderly population becomes a challenge for the whole world for manifold reasons. They include, inter alia, the lack of a social security apparatus or if any, they are insufficient; the weakening of traditional family bonding; almost no explicit references to elderly people in existing international human right laws; and mere stand-by of soft law addressing the rights of the elderly over time. Consequently, these all have probably failed to meet the most urgent needs of this growing demographic.
Design/methodology/approach
This paper is an effort made to recognize the “particular vulnerability” of the older persons and with identification of “specific rights”, advocate for special treatment for them and, optimally, the realization of their rights with respect.
Findings
In addition, this treatise attempts to focus on the nature and constitutional importance of elderly rights with the aim of providing the elderly with social security and prioritization; and more particularly, scrutiny of the impending and timely imperative for formulation of new legal instrument so as to adequately address the issue globally.
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The aim of this paper is to analyze the status of independence of the judiciary in Bangladesh. It is recognized worldwide that an independent judiciary is the sin qua non of…
Abstract
Purpose
The aim of this paper is to analyze the status of independence of the judiciary in Bangladesh. It is recognized worldwide that an independent judiciary is the sin qua non of democracy and good governance. However, without separation of the judiciary from other organs of the state absolute independence of judiciary is not possible. An attempt has been made in this paper to sketch the brief historical background of judicial system in Bangladesh through analyzing the meaning and basic principles of judicial independence and to what extent these principles exists in Bangladesh. How did the judiciary finally separate from the executive? After separation of the judiciary, what is the status of executive interference over judiciary in Bangladesh has also been evaluated in this paper.
Design/methodology/approach
The study is qualitative in nature and based on secondary sources of materials like books, journal articles, government rules, newspaper reports, etc. Relevant literature has also been collected through Internet browsing.
Findings
In this study, it has been found that from time immemorial the judicial system of Bangladesh was not completely independent from the interference of the executive branch of the government. It has also been found that from the beginning of the British colonial rule, the question of separation of the judiciary from the executive had been a continuing debate. Presently, even after separation of the judiciary, the interference of the executive over the judiciary is still continuing.
Practical implications
This paper opens a new window for the policy makers and concerned authorities to take necessary steps for overcoming the existing limitations of the status of judicial dependence in Bangladesh.
Originality/value
The paper will be of interest to legal practitioners, policy makers, members of civil society, and those in the field of judicial system in Bangladesh and some other British colonial common law countries.
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Nurul Haizum FarahDiyana Latjatih, Nurhanis Syazni Roslan, Puteri Shanaz Jahn Kassim and Siti Khadijah Adam
Peer-assisted learning (PAL) in formative objective structured clinical examination (OSCE) is an approach used to evaluate the students' clinical competence. This study aims to…
Abstract
Purpose
Peer-assisted learning (PAL) in formative objective structured clinical examination (OSCE) is an approach used to evaluate the students' clinical competence. This study aims to determine the PAL effectiveness in the formative OSCE in improving clinical competencies and the students' perception and satisfaction of PAL.
Design/methodology/approach
Sixty-seven Year 2 medical students experienced PAL in a formative OSCE setting. A self-administered questionnaire was distributed to evaluate their perception and satisfaction on PAL. The effectiveness of the sessions was determined by comparing their OSCE scores between the pre- and post-intervention.
Findings
Forty-three students completed the intervention and had the experience to assess their peers as well as being assessed during formative OSCE. However, only 26 students managed to attend both pre- and post-intervention OSCE. It was found that there was a significant improvement of OSCE score after the PAL sessions. Over 97% of these students perceived positively and were satisfied with the sessions and thought that formative OSCE gave an opportunity to improve their learning and develop self-confidence in clinical skills.
Originality/value
The findings suggested that PAL in the formative OSCE is a good opportunity to help in students' learning and improve their clinical competencies apart from learning with experts.