International Journal of Environment, Engineering and Education
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The Impact of User Satisfaction in the Use of E-Learning Systems in Higher Education: A CB-SEM Approach
Full text linkThe primary objective of this research is to thoroughly investigate the intricate dynamics and collective influence of essential elements within the e-learning domain. Examining the interdependencies and combined effects of technology system quality, information quality, and support services on user satisfaction. This study investigates the key factors affecting user satisfaction in e-learning at Universitas Negeri Makassar, focusing on the roles of Information Quality, System Quality, and Service Quality. Survey data from 231 diverse students were analyzed using a Likert scale questionnaire, with Structural Equation Modeling via IBM AMOS. The findings aim to reveal how these quality dimensions impact user satisfaction, potentially guiding enhancements in e-learning system design. A comprehensive study examining e-learning systems conclusively found that System Quality, Information Quality, and Service Quality are pivotal factors influencing user satisfaction. Improving system functionality, ensuring the accuracy and relevance of information, and delivering high-quality service were all significantly correlated with higher satisfaction levels among users. This underscores the critical need for educational institutions to prioritize these aspects to enhance the e-learning experience. The research presents strong evidence that educational institutions can significantly boost user satisfaction by focusing on the quality of the system, information, and services provided in e-learning platforms. These findings provide actionable insights for decision-makers in the education sector, suggesting that investments in these areas will likely yield positive outcomes in user engagement and satisfaction with e-learning systems
Evaluation of the Effects and Risks of Cost Estimation on Project Costs and Claims: A Study in Imo State, Nigeria
Full text linkThe construction industry is challenged with project risks often resulting from cost estimating uncertainties. Previous research shows that 50% of construction disputes are estimating-risk related, leading to poor project performance. This study investigated the effects of charge evaluating risks on project cost overrun and resultant claims to improve project efficiency. The investigation was carried out using well-structured questionnaires addressed to construction professionals in Imo state to determine the critical cost estimating risks and identify principal evaluating risk-related claims contributing to cost overrun in construction project delivery. The results reveal that design issues (design complexity, preliminary design, and design errors) are the key contributors to cost estimating uncertainties. Inadequate cost data, estimator's expertise, and omission in contract documents are the principal causes of evaluating risk-related claims in construction projects. The study concluded that the inaccurate estimation of construction costs eventually leads to claims and cost overruns in the delivery of building projects. It's possible that the risk involved in cost evaluation is to blame for this. Estimators with sufficient efficiency, skill, and experience should be included in estimating to increase the likelihood that the estimates will be close to correct. The study recommends the availability of concise designs and specifications and details as well as updated market surveys to eliminate uncertainties and improve cost data before estimating a construction project
Household Solid Waste Management (HSWM) Awareness and Applications: A Comparative Study on Urban and Rural Sustainable Practices
Full text linkSolid Waste Management has been a problem for rural and urban communities. The study aims to provide a basis for urban and rural communities to improve their awareness, attitudes, and practices on solid waste management at a household level and collaborate with local government units toward effective Household Solid Waste Management (HSWM) implementation, ordinances, and mitigation. A 30-item close-ended assessment with 5-item follow-up questions was constructed to determine and compare the level of awareness, attitudes, and practices on HSWM between Barangay Bignay, Valenzuela (urban group), and Barangay Santa Elena, Hagonoy (rural group). The data was analyzed using One Way Analysis of Variance (ANOVA) to know the significant relationship between the bases (i.e., awareness, attitudes, and practices) in both barangays. Findings showed that the awareness of HSWM, practices, and attitude was high in the urban area, having a p-value of 0.003474, a lesser p-value than in rural with 0.007341. The comparisons analyzed using ANOVA reflecting a p-value of 0.96 concluded that there is a significant difference between the bases on the two groups since it is greater than the 0.50 level of significance. The bases were determined to have a positive relationship and thus directly affect the respondents' applications on HSWM and their communities. The LGUs implement an SWM program but still needs improvement as these contradict the measured practices. The study suggests a stricter implementation and orientation for both barangays on solid management programs
Characteristics of Synthesized Copper Oxide (CuO) Nanoparticles using Maize Husks: A Green Chemistry Approach
Full text linkNanoparticles of a transitional metal oxide such as Copper (II) oxide or cupric oxide have gained considerable interest in the research and development community due to the corresponding conventional materials' extremely different characteristics. Hence, this study aimed at characterizing Copper (II) oxide nanoparticles synthesized through a direct green chemical approach using the outer leafy cover of the maize husk. The fresh maize husk's optical absorption spectrum shows broad peaks that were cantered around 209, 241, and 331 nm, which are the characteristic of flavonoids. The structural analysis shows the formation of Nantokite with a face-centered crystal structure, which has crystalline peaks (111), (220), (311), and (331) at 2θ = 28.5, 47.4, 56.28, and 76.6, respectively. In contrast, the spectrum of Copper (II) oxide showed a base-centred monoclinic crystal structure with lattice parameters: a= 4.688, b = 3.4229, c = 5.1319 and β = 99.91. In conclusion, nanoparticles' synthesis using aqueous corn husk extract was successfully synthesized and characterized. This environmentally friendly approach is a simple, environmentally friendly, inexpensive process and is reproducible
Pro-Environmental Communication and Behavior in Sustainable Use of Environmental Resources: A Study in Kalpitiya Fisheries Inspector Division, Sri Lanka
Full text linkHuman behavior has a multi-dimensional view of resource utilization; thus, vital to examine the behavior of groups in environmental resource utilization. The group was fishing communities in Kalpitiya Fisheries Inspector Division (KFID). Data was collected through various methods subjected to thematic content-based analysis and statistical analysis. The primary source of income is a fishery where marine fishery and brackish water fishery, along with aquaculture, were the sub-categories. Sixteen percent were engaged in both marine and brackish water fishery. A total of 18116 individuals were marginalized in the area. Un-sustainable resource utilization has decreased the area's existing resources, particularly for Internally Displaced Persons (IDPs). Their behavior has created specific environmental problems in Wannimundalama and Manadalakuda. Though education level was not satisfactory (96%), the statistical analysis showed dis-concordant status; neither education nor the source of income affects their poor behavior in resource utilization. Comparing two fishing harbors illustrated that the cultural aspect also affects the behavior. The perception of environmental protection is also poor, IDPs. Gender vice behavior reflected that females are more willing to protect and restore the environment than males. Findings illustrated that the dimensions and categories of the system directly do not decide the behavior of groups in environment resource utilization. Environmental communication is essential and positively impacts human behavior in environmental resource utilization. The study recommends investigating the factors constraining sustainable resource utilization behavior in KFID, emphasizing the necessity of environmental communication
Analysis of Glycerol in Nipa (Nypa fruticans Wurmb.) Kernel Extract (NKE) with High-Performance Liquid Chromatography (HPLC) Method
Full text linkThe quantification of glycerol reveals application areas in research as well as industrial prospects for supplies of biodiesel. Although petroleum and fossil fuels are not sustainable sources of energy, these fuels are on the verge of being exhausted. The study aims to establish a novel, calibrated, simple, and accurate analysis of the glycerol content using High-Performance Liquid Chromatography (HPLC) method. The quantification of glycerol from Nipa Kernel Extract (NKE) using the HPLC method resulted from a 4.06% concentration using hydrolysis reaction with methanol and KOH catalyst. The pure and hydrolyzed NKE were monitored using isocratic elution with Hydrophilic-Interaction Chromatography (HPLC-HILIC). The chromatograms extracted from the LC were analyzed and validated and showed good performance in terms of linearity as implicated (R^2=0.9928), repeatability (%RSD range from 2.6758% and 16.6130%), intermediate precision (p-value (0.00119) <α), the limit of detection 0.0001458% (w/w), the limit of quantification 0.0004182% (w/w), and accuracy (76.7105% to 82.8505%) of hydrolyzed Nipa Kernel Extract (NKE). The results produced from the employed approach are sufficient for determining the concentration of glycerol, and the method itself can serve as an alternate way to conduct chemical analysis. Additional research revealed that the contaminants and free fatty acids connected to glycerol absorbed the same absorbance units. It is anticipated that the investigation and identification will include quantifying the concentration of other unknown compounds found in the matrix
End-User Computing Satisfaction (EUCS) Model: Implementation of Learning Management System (LMS) on Students Satisfaction at Universities
Full text linkThe purpose of this research is to find out the extent to which user satisfaction with the Learning Management System (LMS) service is so that it can provide better service and can satisfy/meet the needs of its users by measuring user satisfaction with information systems using the End-User Computing Satisfaction (EUCS) model approach. The researcher adopted the EUCS model developed by Doll and Torkzadeh regarding the satisfaction of end users of information systems. Related to the level of contentment experienced by end users of information systems, the researcher chose to implement the EUCS model that Doll and Torkzadeh had developed. The collected research samples came from a total of two hundred (200) students enrolled in the Arts, Drama, Dance, and Music Education Study Program in batches of 2021 and 2022. Confirmatory Factor Analysis (CFA), a subset of the Structural Equation Modeling (SEM) method, was used to analyze this research project's data. User satisfaction will also affect if the variable of ease of use in learning applications used by students is easy to access and can be accessed anywhere and anytime. This study found that students were highly satisfied with the Application of LMS in the learning process. It was also found that the five EUCS factors significantly increased satisfaction with learning technology
Development of Internet of Things (IoT) Based Electric Equipment Control
Full text linkThe Internet of Things (IoT) is one of the new trends in the world of technology that is likely to be one of the big things in the future. IoT is a concept that aims to expand the benefits of continuously connected internet connectivity. IoT can combine physical and virtual objects by exploiting data capture and communication capabilities. This development research aims to produce an IoT-based electrical equipment control system. The development model used in this research is the prototype development model. The development procedure consists of 6 steps: Requirements Analysis, Building Prototypes, Evaluation of Prototypes, Coding the System, Testing and Evaluating the System, and Implementing the System. The equipment used for the IoT-based electronic control system that will be designed consists of raspberry pi, power supply, relays, speakers, sound sensors, and lights. The results of this study resulted in an electronic control system that was carried out by voice commands. In this study, IoT devices were programmed to respond to commands to turn on/off the porch light, turn on/off the living room light, turn on/off the kitchen light, and turn on/off the bedroom light. The results of testing and evaluation of the system indicate that the development of this control system can work well, and the device works according to the instructions. The minimum distance for the voice command response to the device is 0 -10 cm, and the maximum length for the voice command response to the device is 500 cm
Evaluation in Assessment of Student Competence: Application of the Indonesian Student Competency Assessment (AKSI) in Elementary Schools
Full text linkThe purpose of the study was to determine the application of the Indonesian Student Competency Assessment application at the elementary school level, to determine the readiness of teachers, to find out the ease of guidance and the suitability of literacy and numeracy learning modules with assessment questions, and to find out the obstacles experienced by teachers during the process of using the Application of Indonesian Student Competency Assessment (AKSI) application using a purposive sampling technique. Data collection using questionnaires and documentation. Data analysis in this study used descriptive statistics. The results showed that the application of the Indonesian Student Competency Assessment application at the elementary school level in, Takalar Regency had been implemented well. Research with sub-variables of the application of the Indonesian Student Competency Assessment application at three elementary schools for students obtained data showing 44.70% were in a good category. The readiness of teachers to apply the AKSI application obtained data that 84.80% were in the ready and very ready category and the very ready category was balanced with the ready category. The ease of guidance and the suitability of the literacy and numeracy learning modules with the assessment questions provided by the AKSI application for teachers obtained data that showed 39.00% were in the very good category. Obstacles experienced by teachers during the process of using the AKSI application, data showed that 35.70% were in the high categor
The Environmental Aspect & Impacts for Industrial Sites: Methodological Framework and Evaluation
Full text linkIdentifying linked environmental aspects and evaluating related impacts is a crucial requirement of any environmental management system for industrial facilities. Industrial sites should guarantee that a complete procedure for aspect identification and impact assessment is in place to fulfil international environmental protection and preservation requirements. The goal of this research was to develop a new procedure. Determine which environmental aspects of industrial sites (actions, products, and services) have or can have substantial consequences, and review and monitor their control regularly. Professional judgment will play an essential part in determining how to address significance in many cases, and this can be aided by collaboration with relevant stakeholders. The study's conclusion was creating a new environmental aspect evaluation system based on newly developed aspects and impacts rating matrix. Industrial sites could use this approach to identify and manage the environmental aspects of their operations