College Journal Research Articles

Showcasing 2024 Community College Research and Practice Highlights

ABSTRACT The Community College Journal of Research and Practice (CCJRP) has published impactful and relevant research concerning community college in 2024. This article describes the scholarship published in 2024 within the journal’s scope, providing important information about the reach and metrics of the journal. In addition, publishing opportunities for scholars and professionals are noted.

Visibility of Russian university journals in the systems of national and international scientific and technical information

Current limitations of access to some international journal platforms and bibliographic systems for Russian researchers result in increased role of national journals for communication and knowledge spreading both at domestic and international levels. Consequently, correct information on Russian journals indexation in various bibliographic systems including underestimated open access databases seems to be topical. The analyzed sample includes journals published by Russian universities as the less studied ones compared to serials published by research institutes. We studied journals published by three types of Russian universities, i.e. Federal, National Research and Basic. Rapid increase in the number of new journals in recent years is demonstrated caused by financial support under different programs. Indexing of journals in Web of Science, Scopus, Dimensions and Lens was studied over a period of 2018–2022. In the Dimensions and Lens we also studied the completeness of indexing as these databases index content using other approaches as compared to Web of Science and Scopus. A share of journals indexed by authoritative Russian journal lists Russian Science Citation Index and White List was revealed. The best positions were detected among journals published by National Research universities. However, Basic universities demonstrate positive growth, as well. The obtained results enabled us to conclude that journals published by Russian universities can be regarded as significant strategic information resource for representing Russian research results to international community.

Externalizing Behaviors of Children as Predicted by Maternal Psychological Well-being

Most of the behaviors of children depend on their parents’ psychological well-being. This study investigated the relationship of maternal psychological well-being with externalizing behaviors of children. A Personal Information Form (PIF), an adapted self-reported Bangla version of the Strengths and Difficulties Questionnaire (SDQ), and an adapted General Health Questionnaire (GHQ-28) were administered on 800 (400 children, 400 mothers) participants to collect data. The children were selected from ten Bangla medium high schools in Dhaka city and their age ranges from 11 to 13 years. The schools and the children were selected using a multistage random sampling technique. The Correlation co-efficient indicated that externalizing behavior in children and mother psychological well-being were significantly positively correlated. Results also showed that somatic symptoms, anxiety and insomnia, social dysfunction, and severe depression of mothers were significantly correlated with externalizing behavior of children. Multiple regression analysis results showed that mothers' anxiety and insomnia alone accounted for 46.9% of the variation and was the most powerful predictor of externalizing behavior. The other significant predictors were severe depression, somatic symptoms, and social dysfunction. All the predictors explained jointly 56.1% of variance in externalizing behavior of children. The implications of the findings have been discussed in the light of theory and scientific evidence from the previous studies. Jagannath University Journal of Science, Volume 11, Number 1, Jun. 2024, pp. 1−12

Numerical Simulation of SEIR Model for COVID-19 Infection

One of the most basic models in epidemiology, the SEIR (Susceptible-Exposed-Infectious-Recovered) model explains how viral infections spread through communities. This study analyzes the SEIR model's differential equations to learn more about its dynamic behaviors. This study discusses the 2019 corona virus disease (COVID-19) epidemic model using numerical methods of susceptible exposed infected recovered (SEIR). A numerical description of the notion is provided using two numerical approaches, including forward Euler and RK-4 approaches. The subplots of SEIR model are drawn by ode 45 commands. The stability of disease free equilibrium and Endemic equilibrium points are depicted. The significance of comprehending the interaction between epidemiological variables and population dynamics in developing efficient public health treatments is brought to light in this study, which investigates the consequences of these equations on the transmission and management of infectious diseases. Insights into the dynamics of illness transmission and potential measures for mitigating its effects are presented through the use of mathematical analysis and computational simulations. Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 172−185

Influence of Y Substitutions on the Structural and Magnetic Properties of Mn-Zn Ferrites

The ordinary solid-state reaction method has been used to produce polycrystalline Mn0.5Zn0.5Fe2–xYxO4. X-ray diffraction (XRD) and scanning electron microscopy (SEM) have been used to study the structural and surface morphology of the samples, respectively. The formation of cubic spinel crystal structure is observed in XRD patterns. The Nelson-Riley function is used to determine the lattice parameters. Vegard's rule is followed by the lattice parameter change with Y content in different Mn0.5Zn0.5Fe2–xYxO4. The x-ray density, and the bulk density both increase with Y content due to the higher atomic weight of Y compared to atomic weight of Fe, as well as porosity decreases. SEM micrographs demonstrate that the average grain size decreases with the increase of Y contents. When x = 0.05, the initial permeability shows maximum then starts to decrease for further increase of Y content. For the composition Mn0.5Zn0.5Fe1.95Y0.05O4, the relative quality factor (RQF) is found maximum (3477). With the increase of Y content, the peak value of the relative quality factor shifts to higher frequencies region which is the consequence of Snoek relation. Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 53−63

Modeling and Stability Analysis of the Dynamics of Prey-Predator Population

The aim of this work is to investigate the numerical study of prey-predator model and give a thorough overview of the existing research. Here we see instances that involve stability analysis, phase plane, and phase portrait, among others. Furthermore, a numerical simulation is shown to illustrate the results of the prey-predator model. This is to provide light on the procedures followed in order to arrive at the conclusions. The one-prey, one-predator principle is discussed in this article from multiple theoretical perspectives. Finally, for various parameter values and time intervals, we have demonstrated the phase portraits and the dynamic behavior of the pre-predator model. Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 81−93

Immunological, Serological and Hematological Changes in COVID 19 Patients of Dhaka City

The analytical test reports of COVID-19 patients admitted in two major hospitals in Dhaka City were analyzed to observe the immunological, serological and hematological abnormalities that can be significant for managing the patients in emergencies. The observed levels of ferritin, procalcitonin, D–Dimer, C-reactive protein (CRP), creatinine and alkaline phosphatase (Alkp) were taken into consideration for this study. Though these parameters were elevated as mentioned for patients from many other countries, in significant cases, the values were normal or even lower than the normal levels. The ferritin level was normal (For men, 24 to 336 micrograms per liter. For women, 11 to 307 micrograms per liter) in only 30% of the patients, whereas, 50% of the patients had higher values and 20% patients had the lower values. Similarly, the procalcitonin (normal value 0.1 to 0.5 ng/mL) level was found to be normal in only 27% of the patients while remaining 73% patients had the high level of this parameter. The D‑Dimer level (less than 0.50) was also found to be normal in only 27% of the patients, whereas 72% of the patients had the higher levels. The C‑reactive protein was within the normal level in only 22% of the patients, whereas, 76% of the patients had the high level of this marker. The creatinine was found to be increased in 60% of the patients. There were 88% patents having increased levels of Alkp with only 12% patients having normal levels. Thus, the elevations of the immunological, serological and hematological parameters were somehow different from those observed from patients in other countries. This information might be useful in managing the hospitalized COVID-19 patients in our country. Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 203−207

Enhancing Surveillance Systems with Cost-Effective Ultrasonic Radar for Object Detection and Tracking

Object detection is critical in surveillance systems because it enables timely identification of unauthorized objects, which is essential for maintaining security and mitigating risks. Existing approaches to surveillance typically suffer from limited coverage, variable detection range, moderate accuracy, high cost, and complex setup requirements. This article presents an approach to object detection using microcontroller-based ultrasonic sensors. Our approach leverages four distinct processing phases to create a radar-like system capable of real-time detection and autonomous decision-making. In this study, we conducted experiments by integrating more than six peripheral modules with the Arduino platform. By evaluating 17 diverse test cases in various scenarios and environments, the approach demonstrated enhanced object tracking and robustness compared to existing methods. The system effectively detects objects within the targeted area, providing precise distance measurements (around 50 cm) and position information (0 to 360 degrees). Moreover, our approach enabled the identification of three risk zones—medium, high-risk, and mild danger—within the critical region, contributing to improved security and risk management. The results reveal the system’s effectiveness in real-time detection, accurate distance estimation, and comprehensive risk assessment. Overall, our study significantly contributes to the advancement of object detection technology by effectively addressing the limitations of existing methods and offering a cost-effective and practical solution. Our research has the potential to monitor objects in surveillance systems across various domains, with significant implications for enhancing security, risk mitigation, and monitoring in industries reliant on effective object detection systems. Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 157−171

Improved Floyd-Warshall Algorithm for Solving Travelling Salesman Problem

The shortest path problem is a fundamental challenge in graph theory, focused on identifying the most efficient routes between nodes in a network. It stands as one of the extensively researched combinatorial optimization problems. In this paper, we explained the fundamental concepts of shortest path algorithms, with a particular emphasis on Floyd Warshall algorithm. We apply the algorithm and showed how this algorithm can be effectively employed to determine the shortest path in various scenarios. Furthermore, this paper addresses real-life applications, particularly focusing on the traveling salesman problem. Individuals often have the option to travel along different routes to reach their destination. However, selecting suboptimal routes can result in time-consuming journeys. To tackle this issue, we apply the Floyd Warshall algorithm to solve the traveling salesman problem (TSP). Additionally, we demonstrate the enhancement of the Floyd Warshall algorithm's efficiency for TSP using the rectangular algorithm. This paper concludes with a comparative analysis between the original and improved Floyd Warshall algorithms, emphasizing the computational reduction achieved through the proposed enhancements. Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 45−52

Similarity and Distance Measures of Picture Fuzzy Sets with Application in Pattern Recognition

Picture fuzzy set is the latest influential conception to conduct ambiguous data effectively. The distance and similarity measures are two dominant concepts to calculate the characteristics between two PFSs. The similarity measure evaluates the closeness between the two PFSs where the larger similarity measure corresponds to the closer degree of two PFSs. In this article, a new similarity measure is developed considering the influence of the abstain and refusal groups as each of these influences the results. Finally, a pattern recognition application is illustrated to justify the effectiveness of this new technique and compare the results with other existing methods. Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 106−117

Determinants of Caesarean Deliveries in Bangladesh: A Multilevel Analysis of a Nationwide Population-Based Survey

Caesarean section, a frequently conducted surgical procedure in obstetrics, is instrumental in safeguarding the well-being of both mothers and infants by addressing complications related to pregnancy and childbirth. While it significantly contributes to reducing maternal and infant mortality rates, its overuse can pose serious health risks. The prevalence of caesarean deliveries has surged globally, including in Bangladesh. This rise in caesarean deliveries has prompted this research to investigate the prevalence and various associated factors in the country. To achieve the study objectives, data were extracted from the Bangladesh Demographic and Health Survey (BDHS) conducted from 2017 to 2018. After preprocessing the data, a total of 4,884 women were included in the study. Frequency analysis was conducted to illustrate the distribution of sociodemographic characteristics among Bangladeshi women. Chi-square tests were performed to assess their association with caesarean delivery. Furthermore, multi-level logistic regression analysis was employed to identify the variables that have a significant impact on the likelihood of caesarean delivery. The study revealed that in Bangladesh, the prevalence of caesarean section deliveries was approximately 33.1%, with the majority of these occurring in the Dhaka division, accounting for approximately 25.3%. Women aged 20 or older were 1.62 times more likely to opt for a C-section during childbirth (OR 1.62, [1.38-1.89]) compared to those under 20. Overweight or obese women had twice the likelihood of delivering via C-section. Higher socioeconomic status also increased the probability of choosing a caesarean delivery. Women who had exposure to any form of media were 57% more likely to opt for a caesarean delivery (OR 1.57 [1.31-1.87]), while not working women had a 48% higher likelihood of having a C-section. Additionally, the study found that the use of caesarean delivery was positively associated with the husband's education level, the number of children previously born, and the number of antenatal care visits. The study revealed that the rate of C-sections in Bangladesh surpasses WHO recommendations significantly. It also identified various factors driving this trend, including women's education levels, socioeconomic status, media exposure, female obesity, age at first childbirth, and husband’s education. These insights may serve as a foundation for developing strategies to regulate the caesarean delivery rate. Urgent policy directives are essential within Bangladesh's healthcare system, coupled with vigilant monitoring of clinical indications for C-sections, to mitigate the adverse effects of unnecessary procedures. Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 31−44

Estimation of the Effective Radiation Dose in Nuclear Medicine Workers from Dhaka by Measuring Radioactivity in Urine Sample Resulting from Internal Exposure

This study estimates the effective doses and activity concentration from 151 urine samples which are collected from 15 (Fifteen) occupational workers at National Institute of Nuclear Medicine and Allied Science (NINMAS) in Dhaka, Bangladesh. The radioactivity concentration in urine sample is due to intake of I-131, Tc-99m and F-18. The samples have been analyzed using High Purity Germanium (HPGe) detector. The radioactivity of I-131 and Tc-99m was found 0.91 ± 0.26 BqL-1 to 504.49 ± 6.03 BqL-1 and 0.15 ± 0.21 BqL-1 to 191.19 ± 6.98 BqL-1 respectively. Radioactivity of F-18 was found from 0.031 ± 0.022 BqL-1 to 0.282 ± 0.065 BqL-1. The effective doses of occupational workers have been also calculated using the radioactivity concentration and the dose coefficient according to ICRP publication 78. Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 64−80

Understanding the Interplay between Anxiety and Self-Esteem among School-Going Adolescents: Moderating Role of Emotional Intelligence

Adolescents undergo significant psychological and emotional changes, with factors such as anxiety, emotional intelligence, and self-esteem playing pivotal roles in their regular development, whereas their association is unclear. This study investigates how emotional intelligence plays a role as a moderator between anxiety and self-esteem of Bangladeshi adolescents. The study was conducted by following a cross-sectional study design, whereas a total of 300 high-school students were selected using a random sampling technique. Data were collected using the Bangla version of anxiety, emotional intelligence, and self-esteem measuring questionnaires. The results displayed that in the case of anxiety, emotional intelligence, and self-esteem, no significant differences were found across varied socio-economic statuses, while these three outcome variables were significantly varied due to gender and family types. In addition, the Pearson product-moment correlation explored a significant negative correlation of anxiety with emotional intelligence and self-esteem and a positive correlation between emotional intelligence and self-esteem among students. Furthermore, the hierarchical regression analysis manifested buffering effects of emotional intelligence in the relationship between anxiety and self-esteem. This study's findings emphasize the importance of emotional intelligence in mitigating anxiety and enhancing self-esteem, regardless of varied socio-economic status. Ultimately, the findings would contribute to policy and decision-making regarding improving the well-being of adolescents in Bangladesh. Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 94−105

Synthesis of Silver Nanoparticles and Forced Convective Heat Transfer Coefficient Measurement of Silver-Water Nanofluids at Laminar Flow

Heat management in industries and other areas is a major issue currently worldwide. Conventional heat transfer fluids like water and ethylene glycol are not very effective. Nanofluids (NFs), composed of nanoparticles (NPs) dispersed throughout a base fluid (BF), have recently been identified as promising heat management agents for various industrial and other applications. Heat transmission is one of the many uses for AgNPs–water NFs (silver NPs (AgNPs) dispersed in water). The goal of this work was to determine the AgNPs–water NFs' forced convective heat transfer coefficient (HTC) in laminar flow. Due to this, we present the results of the HTC study of AgNPs–water NFs in laminar flow in this paper. First, using AgNO3 as a precursor, a chemical reduction approach was used for facile synthesis of AgNPs in one pot at ambient temperature. Synthesized NPs were examined using ultraviolet-visible spectroscopy (UV-vis), X-ray diffraction (XRD), and transform electron microscopy (TEM) techniques. The average particle size obtained from TEM is 25 nm. The required quantity of AgNPs was added to the water to produce 0.5 and 1.0 vol% of AgNPs–water NFs. Next, zeta potential and dynamic light scattering (DLS), in addition to time-lapse observation and captured picture comparison, were used to assess the stability of the formulated NFs. To calculate the forced convective HTC of prepared NFs in laminar flow, a vertical shell and tube heat transfer apparatus and computer-based data recorder were used. According to the results, in comparison to BF, the HTC of 0.5 and 1.0 vol% NFs was 3.3 and 5 times greater, respectively which encourages the use of AgNPs–water NFs in industry and other heat management. Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 13−22

Stability Assessment Through Dynamic Light Scattering and Rheological Study of Hexanoic Acid-Surface-Modified Cerium Oxide Nanoparticles in Cyclohexane at Low Concentration

The stability of 1wt% cerium oxide (CeO2) nanoparticles in cyclohexane is assessed in this paper. To do so, first, n-hexanoic acid (C6-) surface-modified CeO2 nanoparticles were synthesized by heating the aqueous Ce(OH)4 suspension at 400 °C and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high regulation transmission electron microscopy (HRTEM), Fourier transform infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA). XRD pattern indicated the crystalline structure and TEM showed the cubic shape of the synthesized CeO2 nanoparticles with an average size of 4.5 nm. Next, 1 wt% CeO2–cyclohexane dispersion (nanofluids) was prepared simply by dispersing the required amounts of CeO2 nanoparticles in cyclohexane. Finally, the stability of CeO2–cyclohexane was assessed by dynamic light scattering (DLS) and rheological study. DLS measurement revealed that the 1wt% CeO2–cyclohexane nanofluid has good dispersibility with a small DLS diameter (~6 nm) comparable to that of the pristine particle diameter measured by TEM. Also, the rheology study depicted the Newtonian behavior of prepared nanofluids which indicated its excellent stability. Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 23−30

Heat Transfer and Entropy Generation on Free Convection Airflow inside a T-shaped Cavity Considering Inner Obstacles

In this study, a numerical analysis of heat and entropy generation on free convection of airflow is performed inside a T-shaped cavity with and without circular obstacles. The T-shaped cavity is formed with two symmetrically isothermal rectangular blocks. A cold temperature is maintained on the cavity's upper wall. The adiabatic walls are connected to heated wall at constant temperature. It is assumed that the flow is laminar, 2-D, and steadily incompressible. The finite element analysis is employed for solving the governing equations. The calculated results are compared and validated with the other published works. The dimensionless velocity (streamlines) and temperature (isotherms) are calculated and illustrated for varying Rayleigh numbers. It is found that the average Nusselt number at the heated walls and entropy generation inside the cavity increase with the increment of Rayleigh numbers. Moreover, the thermal performance effects on natural convection flow are investigated with circular obstacles inside the enclosure. Five cases without and with circular obstacles regarding the boundary conditions are investigated. It is found that the thermal performance of the cavity can be improved by adding two circular obstacles with cool boundary conditions. It is evident that the innovative structure by adding two circular obstacles with cool boundary conditions gives higher average Nusselt number and entropy generation whereas lower Bejan numbers for varying Rayleigh numbers. The study is performed for and . Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 186−202

Elderly Care Provision under National Policy on Older Persons 2013: A Cross-Sectional Study in Dhaka City, Bangladesh

Bangladesh is undergoing a notable demographic transition, characterized by a substantial rise in the proportion of elderly individuals within its population. This demographic transition presents a range of economic, social and cultural issues that necessitate prompt attention and intervention. The aim of this study was to examine the current state of elderly care services and facilities available for older adults in urban landscape by taking into account the ‘National Policy on Older Persons 2013.’ This study was conducted in Dhaka city by employing a cross-sectional study design. The study population covers elderly people aged 60+ years, living in Dhaka City for more than five years continuously and are able to speak well with someone. The study was based on a sample of 240 and the respondents were chosen using convenient sampling technique. The data were collected through face-to-face interview using structured questionnaire and they were analyzed utilizing descriptive statistics. This study found that the existing elderly care services and available opportunities are below the satisfactory level for most of the older adults of the city, even though the ‘National Policy on Older Persons 2013’ was adopted a decade ago. The elderly people in Dhaka city encountered a number of difficulties considering their physical health, psychological and social well-being. In the case of availability of the affordable and quality healthcare services for older adults in their community, 30.4% of the respondents said that the availability, accessibility and affordability of quality healthcare services are very poor, followed by 24.6% below average and 26.3% at the average level. Nearly 75% of the study people said that they had ever experienced unfair treatment for being aged. Indeed, they receive care and support in an inconsistent, disorganized and incoherent manner. The study clearly revealed that there is a need to prioritize person-centered care as well as integrated care system for the effective management of the ageing population in Bangladesh. Jagannath University Journal of Science, Volume 11, Number 1, June 2024, pp. 118−134

Taqwi̅m Tadri̅ba̅t Kita̅b Ta’li̅m al-Lughah al-‘Arabiyyah li as-Ṣhaf ar-Ra̅bi’ min al-Marḥalah al-Ibtida̅iyyah ‘ala Ḍau̅I Ma’a̅yi̅r ‘Abdu ar-Raḥman Ibnu Ibra̅hi̅m al-Fau̅za̅n

This study aims to find out how to teach Arabic grammar to non-Arabic speakers according to the basis of presenting the material and its relationship to reading skill. The research methodology used by the researchers is the qualitative approach, and the type of research is library research. The sources of data for this research are the book Education by Mahmoud Yunus and books, articles or University journals related to research and analysis. The researchers used the method of analyzing the content of the texts, and the background that drives the researchers to complete this research is what the researchers found that the students saw Arabic grammar as one of the most difficult Arabic subjects and the fact that teachers are not good at managing education, as they do not teach Arabic grammar on the basis of recitation. Good education, and the basis for delivering the subject: 1) From the tangible to the intelligible, 2) From the known to the unknown, 3) From examples to rules or definitions, 4) From simple to complex progression. The application of this basis in teaching Arabic grammar is: 1) Defining the noun and knowledge by mentioning the sign, not defining them terminologically, using visual teaching aids when teaching the hidden pronoun, 2) Restricting the study of annulants to the nominal sentence in teaching grammar and restricting the teaching of the direct and the direct to the verbal and nominal sentences, 3) Using the inductive method and modified texts in teaching grammar, morphology, and rhetoric, 4) mentioning the singular before the compound, and using the functional theory and teaching grammar before rhetoric, that reading skill is due to recognition and understanding, which are related to the student’s proficiency in Arabic grammar.

A BIBLIOMETRIC ANALYSIS OF DAFFODIL INTERNATIONAL UNIVERSITY JOURNAL OF SCIENCE AND TECHNOLOGY:

The study presents a Bibliometric analysis on “Daffodil International University Journal of Science and Technology (DIUJST)”. The study has been conducted on 142 articles published in the DIU Journal of Science and Technology during the period 2006-2012. A good number of articles were found to cover the field of Computer Science and Engineering. Most of the articles are written by Bangladeshi author(s). The authors who have published the maximum number of articles and research papers distributions on different criterion have been identified. The important foreign and Bangladeshi articles having maximum number of citations have also been observed.

The Construction of "Course Ideology and Politics" in the Teaching of Professional Courses in Colleges and Universities ——Taking communication courses as an example

The construction of ideological and political education in the curriculum is the main way to comprehensively implement the fundamental task of cultivating morality and talents in the new era, and it is also an important link in cultivating high-quality talents. When carrying out daily teaching work in journalism and communication majors in universities, a detailed analysis should be conducted on the construction of ideological and political courses, combined with the characteristics of the profession, students' abilities, and the construction goals of ideological and political courses, in order to construct a more complete system of ideological and political course construction, refine the teaching process of ideological and political courses, increase the close integration between subject knowledge and ideological and political education elements, and thus play the role of ideological and political education in shaping the soul of the curriculum, and further cultivate excellent journalism and communication talents.