Journal of Nature, Science & Technology (JANSET)

Maisha Fahmida Md. Liton Islam Md. Ronju Mia Md. Sadekul Islam

An indication of soil that allows water to penetrate into the soil profile is infiltration. Increased ground water recharge is aided by increased filtering rate. The purpose of this study was to assess the soils' infiltration qualities in H.S.T.U. With a constant water head double ring infiltrometer with inner ring of 15 cm, outer ring of 30 cm, and a height of 27 cm was designed. To assess soil texture class, electrical conductivity, pH, and moisture content, soil samples were taken using an auger at a depth ranging from 0 to 15 cm from 5 different chosen locations. Infiltration rates were discovered utilizing a constant head double ring infiltrometer to be 17.53 mm/hr, 13.53 mm/hr, 21.34 mm/hr, 22.4 mm/hr, and 16.21 mm/hr. Sand was present in proportions of 61.2%, 54.2%, 63.2%, 67.2%, and 55.2%. The highest percentage of sand was discovered in location L-4. The percentage of silt was found 26.4%, 26.4%, 20.4%, 22.4% and 34.4% accordingly. 12.4%, 14.4%, 11.4%, 10.4%, and 10.4% of the total weight was clay, respectively. The percentage of water content in soil at five different places was 14.74%, 14.12%, 14.62%, 8.62%, and 11.6%, respectively. The findings show that the research field contains the highest percentage of sand and that the penetration rate is also the highest there. Also, showed a proportionate association between infiltration rate and percentage of sand and a negatively proportional relationship with silt, clay particles, and soil moisture content. The average soil infiltration rate for the HSTU campus area was 18.202 mm/hr.

https://doi.org/10.36937/janset.2023.6813

Michael Tiza

This research paper presents an appraisal of Mechanistic-Empirical Models (MEMs) in pavement deterioration assessment. The study examines various MEMs used in the analysis of flexible pavements, including Westergaard's Equation, Boussinesq's Equation, NCHRP 1-37A, AASHTO MEPDG, EICM, and FPO Software. The equations, parameters, limitations, and advantages of each model are thoroughly evaluated. The significance of MEMs in pavement deterioration assessment is highlighted, emphasizing their ability to provide a mechanistic understanding of pavement behavior and enable accurate predictions of performance. The paper offers recommendations for practitioners and researchers, including the adoption and implementation of MEMs, collaboration and data sharing, enhanced model inputs, standardized calibration protocols, continuous model improvement, and training and education. The conclusion emphasizes the value of MEMs in pavement engineering while acknowledging the need for further improvement and research. The findings of this study contribute to advancing the appraisal and utilization of MEMs in pavement deterioration assessment, ultimately leading to improved pavement designs, optimized maintenance strategies, and informed decision-making in the field of pavement engineering.

https://doi.org/10.36937/janset.2023.6855

Muhammad Aun Bashir

University students use web-based systems for the registration of courses. These web-based registration systems are quite expensive for some universities in developing countries and these expensive course registration systems often present difficulties to users due to their limitations. This paper presents a course registration software developed by the author and implemented to facilitate the process of student registration at the author’s college. Visual Basic .NET (VB.NET) is a versatile and modern programming language developed by Microsoft, built on the .NET Framework, which provides a robust platform for developing Windows and web applications. Visual Basic .Net was used to develop the highly interactive software. Simple text files for schedules, student lists, and course lists with pre-requisite will be used as input files. After checking the pre-requisite courses, class schedules, and exam conflicts automatically, the course list is generated for a particular student for registration. This new course registration software at the author’s department was started to use in the Fall of 2015. The software improved the complication and time-consuming approach of the registration process, executed course registration for engineering students, and also helped the academic supervision across the fall, summer, and spring semesters. After validating the software for one department, this software was implemented for the remaining departments of the author’s college and improved the registration process.

https://doi.org/10.36937/janset.2023.6865