Demutualization: Pros and Cons for Dhaka Stock Exchange (DSE)

The purpose of this study is to examine the implications of demutualization for Dhaka Stock Exchange (DSE). And this is done by examining the existing literature for the stock exchanges that have already been demutualised. The result of the study indicates that all benefits that go with demutualization are not applicable for Bangladesh. Rather the benefits are contingent upon some factors unique to Bangladesh. So in the process of demutualization the authorities concerned should focus on those factors from which optimum benefits can be derived. However, demutualization is not without risk. So along with benefits risk should be focused on so that appropriate policy can be formed that will ensure successful implementation of demutualization. This study is important to investors, academics and policy makers as it demonstrates what benefits demutualization will bring and what challenges it will create. Since demutualization is a very new concept in Bangladesh, the study extends the literature by demonstrating its pros and cons in the context of Bangladesh. Key Words: Demutualization, Mutual Organization, Corporate Governance

Identifying and Prioritizing the Performance Criteria of Denim Washing Industry in Bangladesh Using Analytic Hierarchy Process

In the midst of the negative growth of textile and RMG industries, the mother industry of Bangladesh, the denim industry, has been doing its part incessantly. While the prospect of the denim industry looks promising from the last few years, the factors that drive this industry forward remain unanswered. Among the process chain of denim manufacturing, most value addition occurs in denim washing. This paper focuses on identifying and prioritizing the performance criteria of the denim washing sector in particular. In this context, export-oriented denim washing factories are chosen and the identified criteria are evaluated by using Analytical Hierarchy Process (AHP). This study is qualitative in nature and the secondary data about the factors were collected initially through review of previous literature, magazines, books, and newspapers. A structured questionnaire was developed to collect data from 35 factories. The results of the study show that cost, time, quality, and flexibility are the critical factors for success. The findings also seem to be consistent in general in regard to the test results, and it provides insight for improvement in the denim washing industry of Bangladesh

A rule-based machine learning model for financial fraud detection

Financial fraud is a growing problem that poses a significant threat to the banking industry, the government sector, and the public. In response, financial institutions must continuously improve their fraud detection systems. Although preventative and security precautions are implemented to reduce financial fraud, criminals are constantly adapting and devising new ways to evade fraud prevention systems. The classification of transactions as legitimate or fraudulent poses a significant challenge for existing classification models due to highly imbalanced datasets. This research aims to develop rules to detect fraud transactions that do not involve any resampling technique. The effectiveness of the rule-based model (RBM) is assessed using a variety of metrics such as accuracy, specificity, precision, recall, confusion matrix, Matthew’s correlation coefficient (MCC), and receiver operating characteristic (ROC) values. The proposed rule-based model is compared to several existing machine learning models such as random forest (RF), decision tree (DT), multi-layer perceptron (MLP), k-nearest neighbor (KNN), naive Bayes (NB), and logistic regression (LR) using two benchmark datasets. The results of the experiment show that the proposed rule-based model beat the other methods, reaching accuracy and precision of 0.99 and 0.99, respectively

The role of warmed intravenous fluid on intraoperative hypothermia and postoperative shivering during prolonged oral and maxillofacial surgery

Background: Under general anaesthesia, the core temperature may drop up to 6°C. Patients undergoing prolonged maxillofacial surgery frequently experience unintentional hypothermia that causes postanaesthetic shivering which is a common complication of anaesthesia that should be prevented. This study aimed to evaluate the role of warmed intravenous fluid in preventing intraoperative hypothermia and postoperative shivering. Methods: Between January 2022 and December 2022, 322 patients with American Society of Anesthesiologists (ASA) physical status I, II and the age group of 18 to 45 years old scheduled for elective major oral and maxillofacial surgery were evaluated under the Department of Anaesthesiology in Dhaka Dental College and Hospital. The patients were grouped into Room Temperature Group and Warmed Fluid Group. Results: 162 patients received warmed fluid, whereas 160 patients received fluid at room temperature. In Room Temperature Group, there were 89 male and 71 female patients, whereas Warmed Fluid group had 88 male and 74 female patients. At the end of the procedure, the basal core temperature was 36.7±0.2°C in the group receiving warmed fluid versus 35.9±0.2°C in the group receiving fluid at room temperature. The incidence of hypothermia (<36 °C) was much lower in Warmed Fluid Group (n=28, 17.28%) than Room Temperature Group (n=86, 53.75%). Shivering was more common in Room Temperature Group (n = 67, 41.86%) than in Warmed Fluid Group (n = 19, 11.73%) in the postanaesthetic care unit (PACU). Conclusions: The results of this study suggested that intraoperative hypothermia and postoperative shivering are less common when warmed fluid is infused.  

Aging, care and dependency in multimorbidity: how relationships affect elderly women’s homecare and health service use

Relationships are multidimensional, and we know little about the facets of relationships in the way elderly patients’ with multimorbidity utilise homecare and health services. Gerontology literatures emphasize the importance of place of care, inequalities, availability of health services and affordability. However, the diversity of relationships and associated dependency in elderly care remain underassessed. A qualitative study involving a demographic survey and interviews was conducted to explore relationship experiences of elderly women with multimorbidity in homecare and health services utilization. Civil Surgeon of Sylhet District in Bangladesh was contacted to recruit participants for the study, and this resulted in 33 interviews [11 staff and 22 elderly women with multimorbidity]. Three domains of Axel Honneth’s Theory of Recognition and Misrecognition [i.e. intimate, community and legal relationships] were used to underpin the study findings. Data was analysed using critical thematic discourse method. Four themes were emerged: nature of caregiving involved; intimate affairs [marital marginalization, and parent-children-in law dynamics]; alienation in peer-relationships and neighbourhood [siblings’ overlook, neighbourhood challenges, and gender inequality in interactions]; and legal connections [ignorance of rights, and missed communication]. A marginalization in family relationships, together with poor peer supports and a misrecognition from service providers, resulted in a lack of care for elderly women with multimorbidity. Understanding the complexities of elderly women’s relationships may assist in policy making with better attention to their health and well-being support needs. Staff training on building relationships, and counselling services for family and relatives are essential to improve the quality of care for the women. &nbsp

Design and Realization of a Planar Ultrawideband Antenna with Notch Band at 3.5 GHz

A small antenna with single notch band at 3.5 GHz is designed for ultrawideband (UWB) communication applications. The fabricated antenna comprises a radiating monopole element and a perfectly conducting ground plane with a wide slot. To achieve a notch band at 3.5 GHz, a parasitic element has been inserted in the same plane of the substrate along with the radiating patch. Experimental results shows that, by properly adjusting the position of the parasitic element, the designed antenna can achieve an ultrawide operating band of 3.04 to 11 GHz with a notched band operating at 3.31–3.84 GHz. Moreover, the proposed antenna achieved a good gain except at the notched band and exhibits symmetric radiation patterns throughout the operating band. The prototype of the proposed antenna possesses a very compact size and uses simple structures to attain the stop band characteristic with an aim to lessen the interference between UWB and worldwide interoperability for microwave access (WiMAX) band

Effect of pre-treatment on the physical properties of pumpkin powder

The preservation of pumpkin in powder form and ensuring its quality using different pre-treatments prior to drying is an important concern. The objective of this study is to determine the effect of pre-treatment on the physical properties of different parts of pumpkin powder. Different parts of pumpkin (skin, flesh, seed and unpeel) were pretreated with blanching and soaking in Ca(OH)2 solution and then dried in air fryer at temperature of 80°C and air flow 5.11m/s before being grounded and sieved (250 μm and 710 μm). The Ca(OH)2 pre-treatment showed low moisture content (5.51%- 6.38%), low water activity (0.313-0.396), small particle size (112.04-213.46 μm) and high bulk density (505.51-375.75 kg/m3) in different portions of pumpkin powder as compare to blanching pre-treatment. For the color change, it is dependent on the parts of pumpkin and whether pre-treatment is applied. In conclusion, the pre-treatment with Ca(OH)2 could be recommended way in prior to drying of pumpkin ensuring the better quality of powder

Optimization of spray drying parameters for pink guava powder using RSM

The optimization of pink guava was executed using central composite face-centred design to optimize the spray drying parameters of inlet temperature, maltodextrin concentration (MDC) and feed flow (FF). The experimental results were significantly (p<0.01) fitted into second-order polynomial models to describe and predict the response quality in terms of the final moisture, particle size and lycopene with R2 of 0.9749, 0.9616, and 0.9505, respectively. The final moisture content significantly (p<0.01) decreased with increasing inlet temperature and MDC, whereas the particle size increased. In contrast, the lycopene content significantly (p<0.01) decreased with the higher temperature and increased with increasing MDC. However, according to multiple response optimization, the optimum conditions of 150°C inlet temperature, 17.12% (w/v) MDC and 350 mL/h FF-predicted 3.10% moisture content, 11.23 μm particle size and 58.71 mg/100 g lycopene content. The experimental observation satisfied the predicted model within the acceptable range of the responses