http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/4227 Sun, 05 Apr 2026 19:04:16 GMT 2026-04-05T19:04:16Z http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/4245 Dynamics of Examination Malpractice Among the Key Players in Nigeria Ayoade, Abayomi Ayotunde; Farayola, Philip Iyiola Examination malpractice is a social disease whose menace is crippling the quality of education in Nigeria. In this work, a new deterministic compartmental mathematical model was proposed to analyse the dynamics of examination malpractice among the key players in Nigeria. The positivity and boundedness of solutions of the model were established; the stability analysis was conducted using the linearization approach and the reproductive menace was derived via the next generational matrix method. Numerical simulation was carried out to investigate the effect of the key parameters on the reproductive menace. The result of the simulation showed that examination malpractice was more rampant when the rate of leakages of the examination questions was high. It was, therefore, suggested that for the control of examination malpractice to be effective in Nigeria, efforts must be geared towards blocking the channels of leakages of examination questions. Wed, 01 Jul 2020 00:00:00 GMT http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/4245 2020-07-01T00:00:00Z http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/4237 Optimization of Polyester-flax Blend Ratio for Quality Yarn Production Raihan, Md. Mashud; Begum, Hosne Ara Generally yarn properties can be altered through blending of fibers and required properties can be achieved by using specific blending ratios. Polyester and flax blended yarn is very important in regard to both spinning performance and product quality. In this study polyester fiber was taken as a blending component with flax fiber. Flax and polyester have been a new blend now-a-days and depicts excellent properties than their individual yarn properties. Different proportion of flax and polyester has been tested by maintaining international standards to observe their yarn properties and it is found that polyester was perfectly compatible with low proportion of flax fiber. Their blends with specific ratios exhibit excellent properties which hence ultimately contribute to the fabric properties. Wed, 01 Jul 2020 00:00:00 GMT http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/4237 2020-07-01T00:00:00Z http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/4236 Progress of Bangladesh Power Sector on Perspective of SDG7 Baten, Tasmia; Satter, Md. Dara Abdus Bangladesh is experiencing fastest GDP growth rate than anticipation in recent years. To maintain this pace of economic development, Government of Bangladesh (GOB) has successfully drafted energy policies to fuel the increasing energy demand by considering the targets of sustainable development goal 7 (SDG7). The measures taken in the seventh five-year plan of Bangladesh to achieve the targets of SDG7 are set out to enhance the energy accessibility of nation in affordable, reliable, sustainable way with modern technology. The aim of this paper is to explore the progress and challenges for Bangladesh toward seamless achievement of SDG 7. Analysis reveals that Government of Bangladesh is prone to solve the energy crisis on emergency basis rather than materializing the action plans of masterplan through appropriate policy, reforms and regulation. Consequently, Energy sector is driven to be costly, unreliable and unsustainable in long term. It is suggested that execution of fuel diversification plan, finalization of appropriate incentives and tariff policy for renewable energy market development, local as well as foreign fund allocation for energy efficiency improvement should be implemented to lead energy sector of Bangladesh toward sustainable development. Wed, 01 Jul 2020 00:00:00 GMT http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/4236 2020-07-01T00:00:00Z http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/4235 Determination of Fibre Blend Ratio in Jute-Cotton Blended Roving and Yarn Dayan, Md. Anisur Rahman; Rahman, Md. Mahbubur; Habib, Md. Mahmudul; Kaysar, Mohammad Abdullah; Uddin, Md. Moslem Jute and cotton fibres are most important natural fibres. Cotton is being blended with jute fibre to impart comforts, technical properties, flexibility for producing diversified products and cost reduction. As cotton and jute both are natural cellulosic fibres, determination of individual percentage ratios in their blending by chemical analysis is difficult. Presence of individual fibres have been identified by FTIR analysis as jute possesses aromatic ring group and cotton does not. Fibre fineness analysis is also helpful to ensure the existence of jute fibre in jute-cotton blended materials. Here, blending ratio of jute and cotton fibre has been determined by dyeing and weighing process. Physical identification of component fibres by absorbing a selective dye with respect to jute has been helpful to differentiate and separate the jute-cotton fibres. In this respect, basic dye is substantive to jute fibre and pure cotton fibre has very poor substantivity to that dye. Using this technique, Jute and cotton fibres have been identified and manually separated from their blended roving and yarn. Their percentage ratios have been determined by weighing the separated fibres. This experimental results reveals that the Jute/Cotton weight percentage of jute cotton blended yarn was found as 16.58/83.42 respectively whereas the initial feed ratio of these fibres in blow room was 30/70. This research will help the spinners of jute-cotton blended yarns to control their desired product requirements and quality. Wed, 01 Jul 2020 00:00:00 GMT http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/4235 2020-07-01T00:00:00Z