National Technical Training Institute

The Tonle Sap Lake and the Mekong River are the main water sources in Cambodia. Recently, industrial activities have led to growth in Cambodia’s economy. The dumping of factory waste and garbage into water bodies causes water pollution. This paper introduces Water Quality Monitoring Based on Cellular Communication, integrated with the Internet of Things (IoT), which provides real-time data on water quality over long distances, and enhancing water management. The system incorporates cellular communication and crucial parameters such as potential of Hydrogen (pH), Total Dissolved Solids (TDS), Turbidity, and Temperature. These parameters are combined in each node, which inspects the water quality and transmits the information via the Global System for Mobile Communications (GSM) system to the main system. The data are sent from Main to Amazon Web Services (AWS) to be stored and allow users to access AWS to request information. Thus, users obtain the data through smartphone applications, providing easy access to the information.

The moral standing of Ghanaian cultural system relating to clothing and fashion has become a yardstick of morality. One of the concerns has been whether the influx of numerous foreign dress styles in the Ghanaian society has effect on students, teachers and quality education. To addressed them correctly this thesis sought to know the history of clothing, the fashion in clothing, importance of wearing appropriate uniform, dress to the workplace, teachers as effective professionals, tastes in clothing, general effects of attire, clothing etiquette, Clothing and Fashion, Possible Negative Effects of Clothing, history of fashion trend, the Ghanaian concept of culture, the culture values, the Ghanaian dress styles, the assessment of culture and clothing identity to assess the moral standing on the impact of teachers' mode of dressing to school on students' learning environment.. The researcher employed quantitative methods of research, using instruments such as, questionnaires. The population of the study included the Students, Teachers, Parents, Education Officers and Fashion Designers. The study recommends that Schools should establish dress code policies or guidelines for teachers to ensure a professional learning environment and Teachers should be aware of the impact of their dress style on student learning and adjust their attire accordingly.

ABSTRACT This paper explores an innovative control strategy for photovoltaic‐based shunt active power filters (PV‐SAPF), aiming to enhance power quality, support load supply, and inject low‐harmonic current into the grid. Unlike existing approaches that rely solely on MPPT‐controlled inverters for optimal PV performance, this method integrates an optimal operating point tracking (OOPT) algorithm with a harmonic identification method (HIM), enabling comprehensive system functionality. The control scheme employs a HIM modules to generate reference currents, facilitating harmonic mitigation, reactive power compensation, and load support under varying energy production conditions. MATLAB/Simulink simulations demonstrate the effectiveness of this approach in maintaining grid stability during both energy surplus and deficit scenarios. When energy exceeds load demand, the PV‐SAPF supplies the load and injects less than 1% THD into the grid; during underproduction, it partially supplies the load and mitigates harmonics. The results adhere to IEEE Std 519‐2022 standards, showcasing the system's ability to improve power quality and grid harmony. Notably, this strategy differs from previous methods by removing the need for MPPT‐controlled converters and allowing compatibility with any harmonic identification technique, thus offering a versatile and efficient solution for integrating PV systems into the power grid.

Despite efforts, breast cancer remains associated with a high incidence and mortality rate. Ricinodendron heudelotii also known as "Njansang," is a plant used for cancer treatment. While several reports on the anticancer potential of its leaves exist, little is known about its seed oil. This study aimed to evaluate the in vitro and in vivo anti-breast cancer activity of "Njansang" seed oil. The inhibitory effect of "Njansang" seed oil was determined using MTT and CCK-8 dye reduction assays. Breast cancer was induced with DMBA and promoted with E2V (1mg/kg) for 4weeks in ovariectomized rats (menopausal condition). Evaluated parameters included tumor incidence, tumor mass and volume, histopathology, breast cancer biomarker CA 15-3, antioxidant status (CAT, GSH, MDA, NO, SOD), TNF-α and INFγ levels, lipid profile (total cholesterol, LDL-cholesterol, triglycerides and HDL-cholesterol), as well as toxicity parameters (ALT, AST, creatinine). "Njansang" oil significantly reduced the growth of ER+ (MCF-7) and triple negative (MDA-MB 231) adenocarcinoma cells in vitro as well as tumor incidence, tumor mass and CA 15-3 levels in vivo. It exhibited antioxidant activity, characterized by an increase in SOD and catalase activities, GSH levels and decreased MDA levels compared to the DMBA group. TNF-α and INF-γ levels were reduced following oil treatment, while total cholesterol, LDL-cholesterol and triglyceride levels were reduced. The aforementioned findings confirm the protective effects of"Njansang"oil on induced breast cancer in ovariectomized rats.

Sustainable Development Goal (SDG) 4, which emphasises inclusive and equitable quality education and promotes lifelong learning opportunities for all was achieved by online teaching even during the COVID-19 pandemic. Additionally, online education helped reduce the cost of education, making it more accessible to individuals who might not be able to afford traditional brick-and-mortar schools. So the study was conducted in the midst of online teaching during the pandemic to assess the perceptions of the TVET practitioners and the students. The aim of this study was to conduct an online survey to learn more about how teachers and students perceived and experienced online classrooms. In response to the present pandemic situation, the general educational system also modified itself to include the delivery of classes via online means. Thus, this survey describes Technical Training Institute teachers’ and students’ perceptions and concerns with regard to taking online classes that have been made mandatory in the wake of COVID-19. The sample consisted of 10 trainers and 119 trainees from Technical Training Institute Samthang in Wangdue Phodrang. An online survey method (google forms) was used for data collection. The findings show that little more than 27% believed online teaching is effective. It is also reported that the negative aspect of online teaching is attributed to the low level of knowledge transfer (38%), less structured than classroom teaching (53%), challenging to clarify doubt (53%), and teacher designing teaching learning materials were not interesting with 78%. Overwhelming, 76% of the participants believed that the technical issue majorly disrupts the flow and pace of online teaching. Notably, most participants (69%) thought online education saved time. The study also brought up major challenges with the validity of the assessment system during online education.

This special issue of The Journal of Adventist Education® (JAE) is part of a long-standing tradition. Each quinquennium,1 a special General Conference issue featuring education reports from each division of the Seventh-day Adventist world church is produced to inform, inspire, and engender general support for the work of Adventist education.

A Medical referral institution plays a critical role in the management of health of people in any given country. An interruption in the supply of goods and services to such an institution may lead to inefficiency, ineffectiveness and hence failure to achieve the performance objectives of the medical institution. The objective of the study was to determine the effects of risk identification strategy in supply chain operations on the performance of National Referral Medical Care Institution. The study was carried out at a supply chain management department of the National Referral Hospital in Nairobi County, Kenya. The department deals directly with supply chain operations in the institution. Descriptive research design was adopted while undertaking investigation on the problem. Data was collected using structured questionnaire method. The findings of the study indicated that 90% of the respondents agreed that the institution maintains a risk identification plan while the category of staff involved in risk identification in the supply chain operations was rated at 90% for top management. The types of risks that are most prevalent in the medical institution were rated at 40% for late delivery of medical supplies, 33.3% medical supplies failure, 20% expired medical supplies and 6.7% poor quality of medical supplies. On the factors considered in identification of risks in the supply chain of the institution, desired service delivery and adversity of supply chain risk commanded 40% each. 13.3% indicated frequency of risk occurring and 6.7% showed cost of risk as the factors considered. On the sources of risks in the supply chain for the institution, medical supply stock outs accounted for 30% and expiry of drugs also 30%. Other factors were: high prices, transportation of medical supplies and drug usage all of which scored 40%. On categorization of supply chain risks in the medical institution, the respondents qualified high risk at 43.3%, medium risk level at 36.7% and low risk level at 6.7%. The respondents who did not know accounted for 13.3%. On the frequency of conducting risk identification in the supply chain in the institution, the respondents who were neutral accounted for 33%, those who did know 20%. The respondents who indicated often accounted for 20%, very often were 19% and not often 8%. On the level of risk identification enhancing performance in the institution, 49% of the respondents indicated high performance and 40% were neutral. The study established that risk identification strategy and organizational performance had a positive correlation of 0.141 and 0.458, respectively, on two tail significant level using the Pearson correlation. The researcher recommends that the institution adopts risk identification strategy as basis for risk planning in the supply chain system in order to mitigate both normal and exceptional risks to make supply chain risk management a continuous activity.

Three teaching and learning strategies for problem solving were implemented with first- and second-year deaf college students enrolled in mathematics courses at the National Technical Institute for the Deaf (NTID), Rochester Institute of Technology. These strategies involved the students in (a) giving an explanation to a peer observer in sign language, after which they would put their understanding of a problem and its solution in writing; (b) visualizing the problem-solving process prior to starting to solve a problem; and (c) observing their teacher modeling the analytical process step by step for a sample problem prior to solving math word problems. The students were asked to solve two types of problems: typical word problems, and a visual/manipulative puzzle that would provide a problem-solving experience that would contrast with the experience of solving a problem presented in text format. The results showed that these kinds of instructional strategies can enhance the problem-solving performance of deaf and hard of hearing college students.

The admittance correction terms for ground effects of a single conductor overhead transmission line are computed and discussed. Propagation constants are evaluated and compared with those by other methods. They show how accurate the analyses with the admittance correction are. Step responses and attenuation constants of a single conductor are also shown in order to observe the behavior of the admittance correction term. According to the results, admittance correction should be taken into consideration in analyses of surges, power line carrier, and other characteristics of transmission lines over very lossy ground