Pub Date : 2024-02-07DOI: 10.3329/jnujsci.v10i2.71266
Md Shariful Alam, Md Nurul Huda, S. M. C. Hossain
A numerical study is carried out to demonstrate the heat transmission events of nanofluid in a square cavity saturated by aluminum foam porous medium under the effect of slanted periodic magnetic field. The cavity wall is heated from left and cooled from right while horizontal walls are supposed to be adiabatic. The Brownian motion of nanoparticle is taken into consideration in the thermal conductivity model construction. The dimensionless governing equations including Darcy-Brinkman model are solved by Galerkin-FEM. The outcomes are exposed with depictions of streamlines, isotherms and average Nusselt numbers. The numerical investigation is performed for parameters: Darcy number, Rayleigh number, Hartmann number, porosity, leaning angle of the periodic magnetic field, period number, and nanoparticle volume fraction. The heat transfer rate upsurges noticeably for the rise of nanoparticle volume fraction, period number, Darcy number and Rayleigh number but the reverse trend is found for the parameter Hartmann number as well as porosity. From the acquired numerical outcomes, the maximum rate of heat transfer is attained at δ=π/4 when λ = 1. Jagannath University Journal of Science, Volume 10, Number II, Dec. 2023, pp. 145-158
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Pub Date : 2024-02-07DOI: 10.3329/jnujsci.v10i1.71144
Jannatul Ferdous, Kishor Roy
The ongoing Covid-19 pandemic has a severe impact on people's lifestyles and health all around the world, including Bangladesh. The current study sought to determine if psychoeducation can improve the mental health and life adjustment of young adults in Bangladesh during the COVID- 19 crisis. 30 undergraduate students with high GFQ scores, from two public universities in Dhaka city, were purposefully sampled for the study using a quasi-experimental pretest-posttest design with a control group. The participants were divided into two groups: the experimental group and the control group, each with 15 respondents. The findings of the present study showed the benefits of psychoeducation on the young adults’ mental health and life adjustment. The experimental group's mental health and life adjustment both significantly improved as a result of the psychoeducation intervention, which accounted for 88.8% of the variance in the former and 80.2% in the latter. However, participants who did not receive intervention showed no significant differences in either their mental health or life adjustment. The results may help mental health experts create programs to help young adults who are having problems with their mental health and adjustment. Jagannath University Journal of Science, Volume 10, Number I, Jun 2023, pp. 11−18
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Pub Date : 2024-02-07DOI: 10.3329/jnujsci.v10i2.71265
Jannatul Ferdous Proma, Bijon Baroi, Noor Muhammad
Interview anxiety is a prevalent issue among job applicants. It poses a significant threat to applicants' interview performance. Past studies suggest a substantial gap in the comprehension of the various factors that can influence the anxiety experienced by job applicants during interviews. The goal of this research was to explore the interview anxiety of male and female job applicants in relation to their age and academic performance. A personal information form along with the adapted Bangla version of the Measurement of Anxiety in Selection Interview (MASI) scale was applied to 260 job applicants selected purposively from different public universities in Dhaka city. In the present study, a cross-sectional survey design was employed and data were analyzed by using independent sample t-tests, Pearson product-moment correlation analysis, and stepwise multiple regression analysis. The results of the study indicated that females experience more anxiety in the selection interview than males. For both males and females, there was a positive correlation between age and interview anxiety, and academic performance was negatively correlated with interview anxiety. The results further revealed that, for both males and females, age and academic performance could predict interview anxiety where academic performance was the strongest predictor of interview anxiety. These findings may be useful to employers and human resource professionals concerned with these issues and to raise awareness regarding the interview anxiety of job applicants. Jagannath University Journal of Science, Volume 10, Number II, Dec. 2023, pp. 136-144
面试焦虑是求职者中普遍存在的问题。它对求职者的面试表现构成重大威胁。过去的研究表明，在理解影响求职者面试焦虑的各种因素方面存在很大差距。本研究旨在探讨男女求职者的面试焦虑与年龄和学习成绩的关系。研究人员从达卡市不同的公立大学有目的性地挑选了 260 名求职者，对他们进行了个人信息表和改编的孟加拉语版 "选拔面试焦虑测量（MASI）量表 "的测试。本研究采用了横断面调查设计，并通过独立样本 t 检验、皮尔逊积矩相关分析和逐步多元回归分析对数据进行了分析。研究结果表明，女性在选拔面试中比男性更焦虑。对于男性和女性而言，年龄与面试焦虑呈正相关，而学习成绩与面试焦虑呈负相关。研究结果进一步显示，对于男性和女性而言，年龄和学习成绩都可以预测面试焦虑，其中学习成绩是预测面试焦虑的最强因素。这些研究结果可能会对关注这些问题的雇主和人力资源专业人士有所帮助，并能提高人们对求职者面试焦虑的认识。 贾根纳特大学科学杂志》，第10卷，第2期，2023年12月，第136-144页
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