Concrete utilization has become one of the basic needs of humans in today’s industrialization and urbanization scenario. Ingredients of concrete include cement, sand and aggregates. Cement production is associated with CO2 emission and green house emission issues. Availability of sand and aggregate is also creating serious issue these days. Handling of concrete required technical expertise and day to day research advancements are made to solve issues related to concrete being weak in tensile strength. Weakness is concrete can be mitigated by adding fibers which help to improve tensile strength of concrete. Fibers are available in the form of waste polythene, discarded rubber tyres of automobiles, etc. Polymer fibers can provide better strength. It increases ductility and reduces deflection in large concrete members of structure. In current work, Polythene and rubber tyres were cut down to fine fibers and added in concrete as replacement to cement in different incremental percentages. M30 grade of concrete was prepared. M30 and above grade concrete are generally utilized in construction of industrial flooring. Different tests performed on polymer fiber induced concrete revealed that it can be suitably used as substitute to normal M30 concrete for temperature and impact resistant flooring construction.
{"title":"THE STRENGTH ASSESSMENT OF POLYMER FIBER-INDUCED CONCRETE","authors":"M. Wagh, P. Bhandari, A. Sengupta","doi":"10.31580/OJST.V3I4.1630","DOIUrl":"https://doi.org/10.31580/OJST.V3I4.1630","url":null,"abstract":" \u0000Concrete utilization has become one of the basic needs of humans in today’s industrialization and urbanization scenario. Ingredients of concrete include cement, sand and aggregates. Cement production is associated with CO2 emission and green house emission issues. Availability of sand and aggregate is also creating serious issue these days. Handling of concrete required technical expertise and day to day research advancements are made to solve issues related to concrete being weak in tensile strength. Weakness is concrete can be mitigated by adding fibers which help to improve tensile strength of concrete. Fibers are available in the form of waste polythene, discarded rubber tyres of automobiles, etc. Polymer fibers can provide better strength. It increases ductility and reduces deflection in large concrete members of structure. In current work, Polythene and rubber tyres were cut down to fine fibers and added in concrete as replacement to cement in different incremental percentages. M30 grade of concrete was prepared. M30 and above grade concrete are generally utilized in construction of industrial flooring. Different tests performed on polymer fiber induced concrete revealed that it can be suitably used as substitute to normal M30 concrete for temperature and impact resistant flooring construction.","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84492138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. T. Palpanadan, Ros Eliana Ahmad Zuki, Azhari Mariani
Soft skills are very much needed and have to be mastered in improving the self-performance of all graduates. The imbalance between academic curriculum and soft skills can also affect the quality of student teachers. A pilot study was also conducted to identify the level of mastery of soft skills (critical thinking and problem solving skills) of Technical and Vocational Education and Training (TVET) student teachers through learning Computer Aided Design (CAD) course using a self-developed profile. Thus, the aim of this study was to validate the developed profile. A quantitative method was employed where questionnaires were distributed for data collection. 37 TVET student teachers were involved in this study. Descriptive statistics using statistical packages for the social science version 25.0 (SPSS version 25.0) were adopted for data analyses. The value of cronbach alpha obtained for the instrument used was 0.974 which was considered high. In addition, the Kappa value obtained was 0.972, indicating a very good agreement from the 3 experts. The findings revealed that participants’ mean scores for critical thinking and problem solving skills were 3.439 and 3.437 respectively which revealed that the student teachers were having moderate levels of soft skills. Hence, this study is important and relevant in helping to validate the instrument developed that can be utilised by the lecturers to gain feedback on the mastery level of soft skills among TVET student teachers. Besides, the findings of this study can be implemented for TVET student teachers at other Teachers Training Institute or other institutions.
{"title":"TVET STUDENT TEACHERS’ SOFT SKILL PROFILE OF COMPUTER AIDED DESIGN (CAD) COURSES AT MALAYSIAN TEACHER EDUCATION INSTITUTE","authors":"S. T. Palpanadan, Ros Eliana Ahmad Zuki, Azhari Mariani","doi":"10.31580/OJST.V3I4.1622","DOIUrl":"https://doi.org/10.31580/OJST.V3I4.1622","url":null,"abstract":"Soft skills are very much needed and have to be mastered in improving the self-performance of all graduates. The imbalance between academic curriculum and soft skills can also affect the quality of student teachers. A pilot study was also conducted to identify the level of mastery of soft skills (critical thinking and problem solving skills) of Technical and Vocational Education and Training (TVET) student teachers through learning Computer Aided Design (CAD) course using a self-developed profile. Thus, the aim of this study was to validate the developed profile. A quantitative method was employed where questionnaires were distributed for data collection. 37 TVET student teachers were involved in this study. Descriptive statistics using statistical packages for the social science version 25.0 (SPSS version 25.0) were adopted for data analyses. The value of cronbach alpha obtained for the instrument used was 0.974 which was considered high. In addition, the Kappa value obtained was 0.972, indicating a very good agreement from the 3 experts. The findings revealed that participants’ mean scores for critical thinking and problem solving skills were 3.439 and 3.437 respectively which revealed that the student teachers were having moderate levels of soft skills. Hence, this study is important and relevant in helping to validate the instrument developed that can be utilised by the lecturers to gain feedback on the mastery level of soft skills among TVET student teachers. Besides, the findings of this study can be implemented for TVET student teachers at other Teachers Training Institute or other institutions.","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77908599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ujala Razaq, Xu Lizhong, Changli Li, Muhammad Usman
Arithmetic Coding (AC) is a form of entropy encoding used in lossless data compression. It is a well-known, state of the art technique, in which the frequently seen symbols are encoded with fewer bits than rarely seen symbols. It has been widely used since last four decades. Many researchers worked on it to improve its performance and they successfully experimented with it. This technique has also been in use in combination with other techniques to gain surprising results. In this survey paper, an effort is made to recap a number of accomplishments from 1976 to 2017 regarding Arithmetic Coding. This study provides an insight for new researchers to know how this technique evolved with time and how major achievements were made using this technique. This paper gives a comparison of AC with another well-known technique named Huffman Coding. Comparison with its contemporary counterparts shows that it is better in performance almost in every situation.
{"title":"Evolution and Advancement of Arithmetic Coding over Four Decades","authors":"Ujala Razaq, Xu Lizhong, Changli Li, Muhammad Usman","doi":"10.31580/ojst.v3i3.1664","DOIUrl":"https://doi.org/10.31580/ojst.v3i3.1664","url":null,"abstract":"Arithmetic Coding (AC) is a form of entropy encoding used in lossless data compression. It is a well-known, state of the art technique, in which the frequently seen symbols are encoded with fewer bits than rarely seen symbols. It has been widely used since last four decades. Many researchers worked on it to improve its performance and they successfully experimented with it. This technique has also been in use in combination with other techniques to gain surprising results. In this survey paper, an effort is made to recap a number of accomplishments from 1976 to 2017 regarding Arithmetic Coding. This study provides an insight for new researchers to know how this technique evolved with time and how major achievements were made using this technique. This paper gives a comparison of AC with another well-known technique named Huffman Coding. Comparison with its contemporary counterparts shows that it is better in performance almost in every situation.","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73693423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alnawars Mohammed, W. A. Al-Tumah, Ra’ed A. Malallah
Wrapped antennas are described as the omnidirectional coverage antennas, thus it has been discussed in wide studies. In this study shows how to calculate the radiation pattern for a wraparound microstrip antenna by solving the integral equation of the electric and magnetic fields. The modelling has been done by representing the body with regular geometrical shape such as a Body of Revolution (BoR). The wraparound microstrip antenna is considered as a conducing cylinder patch which be uniformly coated around a lossless dielectric having dielectric constant. Both are substrates around a conducing cylinder as ground patch. Analytically the prediction results have been calculated using the Method of Moment (MoM). It is worth noting that these predictions are in a good qualitative agreement with previous studies. We also has been examined the case involving two simultaneous patches using the electromagnetic boundary conditions to solve the differential and integral equations. These types of antennas are used in many applications such as medical, military as in the rockets, etc.
{"title":"Design of Wraparound Microstrip Antenna using the Method of Moment","authors":"Alnawars Mohammed, W. A. Al-Tumah, Ra’ed A. Malallah","doi":"10.31580/OJST.V3I3.1669","DOIUrl":"https://doi.org/10.31580/OJST.V3I3.1669","url":null,"abstract":"Wrapped antennas are described as the omnidirectional coverage antennas, thus it has been discussed in wide studies. In this study shows how to calculate the radiation pattern for a wraparound microstrip antenna by solving the integral equation of the electric and magnetic fields. The modelling has been done by representing the body with regular geometrical shape such as a Body of Revolution (BoR). The wraparound microstrip antenna is considered as a conducing cylinder patch which be uniformly coated around a lossless dielectric having dielectric constant. Both are substrates around a conducing cylinder as ground patch. Analytically the prediction results have been calculated using the Method of Moment (MoM). It is worth noting that these predictions are in a good qualitative agreement with previous studies. We also has been examined the case involving two simultaneous patches using the electromagnetic boundary conditions to solve the differential and integral equations. These types of antennas are used in many applications such as medical, military as in the rockets, etc.","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88554451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Arwa Mohamed, Mosab Hamdan, Ahmed Abdelazizb, Sharief F. Babiker
cloud computing has become more powerful with the inclusion of software-defined networking (SDN) in its environment. In Cloud Data Centers (CDCs), an important research issue is how to forecast and allocate resources efficiently whilst achieving Quality of Service (QoS) of users request with minimal overall power consumption; taking into account the frequent changes in resource requirements. In this paper, we propose a Supervisor Controller-based Software-Defined Cloud Data Center (SC-boSD-CDC) framework for dynamic resource allocation and prediction of cloud computing-based SDN. In this proposed module, Genetic Algorithm (GA) is proposed to deal with the multi-objective problem of dynamically forecasting the utilization of resources in both compute nodes and links bandwidth of network as well as energy consumption in the Cloud Data Center (CDC). Furthermore, a Virtual Machines (VMs) placement algorithm is also proposed to allocate computing resources and routing algorithms to choose the proper bandwidth links between switches; resulting in increased CPU and memory utilization and reduction in overall power consumption.
随着云计算环境中软件定义网络(SDN)的加入，云计算变得更加强大。在云数据中心(cdc)中，如何有效地预测和分配资源，同时以最小的总体功耗实现用户请求的服务质量(QoS)是一个重要的研究问题。考虑到资源需求的频繁变化。在本文中，我们提出了一个基于监督控制器的软件定义云数据中心(SC-boSD-CDC)框架，用于基于云计算的SDN的动态资源分配和预测。在该模块中，提出了遗传算法(Genetic Algorithm, GA)来动态预测云数据中心(Cloud Data Center, CDC)中计算节点和链路的资源利用率以及网络带宽和能耗的多目标问题。此外，还提出了一种虚拟机(vm)布局算法来分配计算资源和路由算法，以选择交换机之间合适的带宽链路;从而提高CPU和内存利用率，并降低总体功耗。
{"title":"Dynamic Resource Allocation in Cloud Computing Based on Software-Defined Networking Framework","authors":"Arwa Mohamed, Mosab Hamdan, Ahmed Abdelazizb, Sharief F. Babiker","doi":"10.31580/ojst.v3i3.1668","DOIUrl":"https://doi.org/10.31580/ojst.v3i3.1668","url":null,"abstract":"cloud computing has become more powerful with the inclusion of software-defined networking (SDN) in its environment. In Cloud Data Centers (CDCs), an important research issue is how to forecast and allocate resources efficiently whilst achieving Quality of Service (QoS) of users request with minimal overall power consumption; taking into account the frequent changes in resource requirements. In this paper, we propose a Supervisor Controller-based Software-Defined Cloud Data Center (SC-boSD-CDC) framework for dynamic resource allocation and prediction of cloud computing-based SDN. In this proposed module, Genetic Algorithm (GA) is proposed to deal with the multi-objective problem of dynamically forecasting the utilization of resources in both compute nodes and links bandwidth of network as well as energy consumption in the Cloud Data Center (CDC). Furthermore, a Virtual Machines (VMs) placement algorithm is also proposed to allocate computing resources and routing algorithms to choose the proper bandwidth links between switches; resulting in increased CPU and memory utilization and reduction in overall power consumption.","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90796018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Miniaturization of wireless systems empowered the use of the textile antenna for various purposes and has become one of the fastest developing technology in the world today. In general, textile antennas are microstrip antenna where the substrate is a textile material. Commercially, a variety of textile materials available these days, and the properties of these textiles have an impact on the characteristics and performance of an antenna. Normally, textile materials present a very low dielectric constant which is required for an efficient antenna. Nevertheless, textile fabrics are porous, anisotropic, and compressible materials whose thickness and density alters with low pressure affecting the electromagnetic properties of the material. The features of the textile materials were believed to impact the behavior of the antenna, hence this study shows minimal research highlighted on the differences of textile material properties. This review paper summarizes different types of antenna with their applications, essential antenna parameters, and the textile material used for the construction of the wearable textile antenna. This literature review guides to reveal the various considerations for designing wearable antenna from different textile materials. Lastly, several open recommendations are given for further guidance for future studies.
{"title":"A Review of the Wearable Textile-Based Antenna using Different Textile Materials for Wireless Applications","authors":"Shehab Khan Noor, N. Ramli, Nurul Liyana Hanapi","doi":"10.31580/OJST.V3I3.1665","DOIUrl":"https://doi.org/10.31580/OJST.V3I3.1665","url":null,"abstract":"Miniaturization of wireless systems empowered the use of the textile antenna for various purposes and has become one of the fastest developing technology in the world today. In general, textile antennas are microstrip antenna where the substrate is a textile material. Commercially, a variety of textile materials available these days, and the properties of these textiles have an impact on the characteristics and performance of an antenna. Normally, textile materials present a very low dielectric constant which is required for an efficient antenna. Nevertheless, textile fabrics are porous, anisotropic, and compressible materials whose thickness and density alters with low pressure affecting the electromagnetic properties of the material. The features of the textile materials were believed to impact the behavior of the antenna, hence this study shows minimal research highlighted on the differences of textile material properties. This review paper summarizes different types of antenna with their applications, essential antenna parameters, and the textile material used for the construction of the wearable textile antenna. This literature review guides to reveal the various considerations for designing wearable antenna from different textile materials. Lastly, several open recommendations are given for further guidance for future studies.","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84475552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Suzarina Ahmed Sukri, Taufiq Khairi Ahmad Khairuddin, Yeak Su Hoe
Throughout this paper, the translation effect on the first order polarization tensor approximation for different type of objects will be highlighted. Numerical integration involving quadratic element as well as linear element for polarization tensor approximation will be presented. Here, we used different positions of an object of fixed size and conductivity when computing the first order polarization tensor. From the numerical results of computed first order polarization tensor, the convergence for every translation is observed. Moreover, discretization of the geometric objects into triangular meshes was done by using meshing software called NETGEN mesh generator while for the numerical computation, MATLAB software was used. We found that the translation has no effect on the approximated first order PT for sphere and cube after we have computed the first order PT for both geometries with a few center of masses. The numerical results of approximated first order polarization tensor is plotted by comparing the numerical results with analytical solution provided.
{"title":"The Effect of Translation on the Approximated First Order Polarization Tensor of Sphere and Cube","authors":"Suzarina Ahmed Sukri, Taufiq Khairi Ahmad Khairuddin, Yeak Su Hoe","doi":"10.31580/ojst.v3i3.1672","DOIUrl":"https://doi.org/10.31580/ojst.v3i3.1672","url":null,"abstract":"Throughout this paper, the translation effect on the first order polarization tensor approximation for different type of objects will be highlighted. Numerical integration involving quadratic element as well as linear element for polarization tensor approximation will be presented. Here, we used different positions of an object of fixed size and conductivity when computing the first order polarization tensor. From the numerical results of computed first order polarization tensor, the convergence for every translation is observed. Moreover, discretization of the geometric objects into triangular meshes was done by using meshing software called NETGEN mesh generator while for the numerical computation, MATLAB software was used. We found that the translation has no effect on the approximated first order PT for sphere and cube after we have computed the first order PT for both geometries with a few center of masses. The numerical results of approximated first order polarization tensor is plotted by comparing the numerical results with analytical solution provided.","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89690796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Riyam A. Mutashar, Wa'il A. Godaymi Al-Tumah, Akeel S.Tahir
In this work, new structures of circular microstrip antenna based on slots are designed and simulated to operate with triple band applications. These slots are annular ring and rectangular shapes in different sizes. The annular ring slot is etched inside the circular patch while the other two rectangular slots are etched on the circular patch edge. The suggested antennas are simulated using version 13 of Ansoft High Frequency Structure Simulator (HFSS). The various parameters such as input impedance, reflection coefficient, gain, radiation patterns and surface currents were investigated. The present results observed that the optimum antenna designed is resonating at three frequencies 2.695, 5.799 and 8.323 GHz. Also, the bandwidths of simulated reflection coefficients at -10 dB are 106, 204 and 371 MHz which are identical with the S-, C- and X-bands frequencies, respectively. Therefore, the optimum antenna designed can be used in the space saving applications in addition to its important role in variety applications at these three frequency bands.
{"title":"Design and Simulation of Triple Band Circular Patch Microstrip Antenna Based on Shape of Ring and Rectangular Slots","authors":"Riyam A. Mutashar, Wa'il A. Godaymi Al-Tumah, Akeel S.Tahir","doi":"10.31580/ojst.v3i3.1666","DOIUrl":"https://doi.org/10.31580/ojst.v3i3.1666","url":null,"abstract":"In this work, new structures of circular microstrip antenna based on slots are designed and simulated to operate with triple band applications. These slots are annular ring and rectangular shapes in different sizes. The annular ring slot is etched inside the circular patch while the other two rectangular slots are etched on the circular patch edge. The suggested antennas are simulated using version 13 of Ansoft High Frequency Structure Simulator (HFSS). The various parameters such as input impedance, reflection coefficient, gain, radiation patterns and surface currents were investigated. The present results observed that the optimum antenna designed is resonating at three frequencies 2.695, 5.799 and 8.323 GHz. Also, the bandwidths of simulated reflection coefficients at -10 dB are 106, 204 and 371 MHz which are identical with the S-, C- and X-bands frequencies, respectively. Therefore, the optimum antenna designed can be used in the space saving applications in addition to its important role in variety applications at these three frequency bands.","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80833319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Forensic technologies have improved in recent years improving the sensitivity and strength of the investigative potential of forensic scientists. Further, the rules and guidelines for conducting digital forensic investigations have evolved over time. This article examined the different technologies applied in the field. Five technologies were assessed namely: scanning electron microscopy, DNA fingerprinting, alternative light photography, facial reconstruction and LA-ICP-MS. The study found a significant application of technology in forensic investigations, which has aided in improving the field substantially. The study recommends a collaboration of scholars to aid in converging the existing and the emergent knowledge for beneficial application in the field since different stakeholders are involved in the field. Also, it recommends the application of forensic genetics in more areas that are not necessarily linked to human genetic material.
{"title":"Technology in Forensic Science","authors":"B. Fakiha","doi":"10.11131/2019/101258","DOIUrl":"https://doi.org/10.11131/2019/101258","url":null,"abstract":"Forensic technologies have improved in recent years improving the sensitivity and strength of the investigative potential of forensic scientists. Further, the rules and guidelines for conducting digital forensic investigations have evolved over time. This article examined the different technologies applied in the field. Five technologies were assessed namely: scanning electron microscopy, DNA fingerprinting, alternative light photography, facial reconstruction and LA-ICP-MS. The study found a significant application of technology in forensic investigations, which has aided in improving the field substantially. The study recommends a collaboration of scholars to aid in converging the existing and the emergent knowledge for beneficial application in the field since different stakeholders are involved in the field. Also, it recommends the application of forensic genetics in more areas that are not necessarily linked to human genetic material.","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80575600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article reports on the main purpose of the study which assessed the adequacy and utilization of educational technology for effective teaching of environmental sciences programmes by the lecturers of Kano State Polytechnic, Nigeria. Two research questions guided the study. The population comprised 23 lecturers teaching environmental sciences courses in the Polytechnic. The research adopted a descriptive survey design. A structured questionnaire containing 20 items in 5 point likert rating scale was developed and validated by experts. Reliability co-efficient of 0.75 was established using Cronbach Alpha which shows the internal consistency of the instrument was high. Collection of data was done by the researcher. Questions were answered and analysed with Mean and Standard Deviation. Findings reveal that educational technology for teaching environmental sciences courses were not adequate. Furthermore, the said resources were not utilized. It was concluded that there was inadequate and non-utilization of educational technology, which the resulting effect could lead to graduating half-baked students.
{"title":"Lecturers’ Assessment of Adequacy and Utilization of Educational Technology for Effective Teaching of Environmental Sciences Programmes in Kano State Polytechnic, Nigeria","authors":"Mahmoud Sani Dambatta","doi":"10.31580/ojst.v3i2.1466","DOIUrl":"https://doi.org/10.31580/ojst.v3i2.1466","url":null,"abstract":"This article reports on the main purpose of the study which assessed the adequacy and utilization of educational technology for effective teaching of environmental sciences programmes by the lecturers of Kano State Polytechnic, Nigeria. Two research questions guided the study. The population comprised 23 lecturers teaching environmental sciences courses in the Polytechnic. The research adopted a descriptive survey design. A structured questionnaire containing 20 items in 5 point likert rating scale was developed and validated by experts. Reliability co-efficient of 0.75 was established using Cronbach Alpha which shows the internal consistency of the instrument was high. Collection of data was done by the researcher. Questions were answered and analysed with Mean and Standard Deviation. Findings reveal that educational technology for teaching environmental sciences courses were not adequate. Furthermore, the said resources were not utilized. It was concluded that there was inadequate and non-utilization of educational technology, which the resulting effect could lead to graduating half-baked students. ","PeriodicalId":19674,"journal":{"name":"Open Access Journal of Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85583125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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