Rancang Bangun Protipe Perangkat Pengukuran dan Monitoring Besaran Listrik Menggunakan PLC Berbasis LabVIEW

Untuk proses monitoring besaran listrik dari suatu pembangkit tenaga listrik diperlukan suatu perangkat antar muka elektronik. Perangkat ini merupakan bagian dari sistem SCADA (Supervisory Control and Data Acquisition). SCADA pada umumnya terdiri dari Master Terminal Unit (MTU) yang memonitor dan mengendalikan dari jarak jauh, MTU mengendalikan Remote Terminal Unit (RTU) secara otomatis. Data yang ada di MTU kemudian direpresentasikan dengan Human Machine Interfaces (HMI). Tulisan ini menyajikan rancang bangun protipe monitoring dan pengukuran besaran listrik dari sebuah generator sinkron menggunakan PLC berbasis LabVIEW. Protipe alat monitoring dan pengu- kuran ini terdiri dari Power Meter SPM-8, Serial Communication Unit (SCU) 41-V1, PLC Omron tipe CJ2M, dan perangkat lunak LabVIEW. Akuisisi data dari Power Meter dilakukan melalui SCU yang di program oleh perangkat lunak CX-Protocol (protocol Modbus), sedangkan eksekusi sequence read/write data dari power meter dilakukan oleh instruksi PMCR yang diprogram dengan perangkat lunak CX- programmer. Untuk menampilkan besaran listrik yang terukur digunakan LabVIEW, data diakses dari memori data PLC. Tujuan dari penelitan merancang protipe alat yang mampu memonitor dan mengukur besaran listrik secara realtime dengan LabVIEW dengan error ± 5% dari nilai yang terukur di Power Meter. Berdasarkan hasil pengujian error pengukuran rata-rata di LabVIEW lebih tinggi 1,24%, sehingga alat yang dibuat sudah sesuai dengan spesifikasi yang ingin dicapai

Adaptive Fuzzy-PID Controller for Liquid Flow Control in the Heating Tank System

Liquid flow control systems are often used in some industrial processes. One of the problems is the existence of disturbance that can cause the flow response to become unstable. Thus, it is necessary to re-tuning the controller when the disturbance occurs. This study aims to design and implement an Adaptive Fuzzy-PID (AF-PID) controller for the liquid flow control in the heating tank system. We develop an industrial plant prototype of a heating tank process to test the designed controller on a laboratory scale. AF-PID controller is used to controlling the flow rate when the disturbance occurs. The nominal PID controller constants will adjust by additional PID constants when there is a disturbance based on the Mamdani type fuzzy logic rule. The hardware experimental result shows that the designed controller can maintain the stability of the liquid flow when given 50% and 100% pipe leakages with maximum undershot by 3.33% and 24% respectively

The type of culture at a high performance schools and low performance school in the state of Kedah

This research aims to identify the type of culture at a High Performance School (HPS) and Low Performance School (LPS) in the state of Kedah. The research instrument used to measure the type of organizational culture was adapted from Organizational Culture Assessment Instrument (Cameron & Quinn, 2006) based on Competing Values Framework Quinn and Rohrbaugh (1983) Model.Two HPSs and two LPSs representing 129 teachers were chosen as research samples.Research findings showed that the current dominant culture in both HPS and LPS is Hierarchy (M=36.76, M=30.63 & SD = 8.23, SD=7.83) consecutively. Both types of schools practice Market culture and the average scores for both types of schools are the same whereby HPS (M=25.7,SD=8.56) and LPS (M=25.94, SD=8.32). However, HPS practices less Clan culture (M=21.15, SD=8.74) compared to LPS (M=24.18, SD=6.97). The Clan culture is more prominent in LPS compared to HPS. Both types of schools practice Adhocracy less which are (M=17.75, SD=6.94) in HPS and (M=19.81, SD=6.78) in LPS respectively. The findings showed that teachers in both types of schools would like to have the Clan culture practiced in their schools with the same average scores, M=34.89, SD=8.22. HPS prefers the Market culture (M=26.01, SD=6.32) compared to LPS Market culture (M=23.01, SD=.22). However they accepted Adhocracy less in HPS (M=20.02, SD=8.31) and LPS (M=21.58, SD=7.89). Nevertheless, Hierarchy culture in HPS (M=19.32, SD=6.45) and in LPS (M=21.05, SD=6.68) are widely practiced. From the comparisons made, it can be concluded that both types of schools widely practice the Hierarchy and Market cultures in schools.The recommendations for further studies were also suggested

The association between attitude towards the implementation of staff development training and the practice of knowledge sharing among lecturers

This study was aimed to identify the association of teachers’ attitude towards the implementation of Staff Development Training with Knowledge Sharing Practices among the lecturers of the Teacher Training Instituition (TTI).In addition, this study was also to examine the differences in attitudes towards the implementation of Staff Development Training and differences of knowledge sharing practices of lecturers based on demographic factors (gender, teaching experience, and academic qualifications).This is a quantitative approach in cross-sectional survey to collect data on the attitude towards staff development training and knowledge sharing practices among lecturers.The population of this study involved 748 lecturers from TTI in Perlis, Kedah, and Pulau Pinang.Stratified random sampling technique was used to select 336 samples from the population.The instruments used in this research were Attitude of Staff Development Training (Siti-Zanariah, 2010) and Knowledge Sharing (Siti-Zanariah, 2010).Statistical Package for Social Science (SPSS) Version 19.0 was used for analysis of data. The descriptive data analysis involved the description of the respondents such as frequency and percentage, while the second part of inferential analysis was to test the hypotheses, using Pearson correlation, t-test, and ANOVA. This study had found that there was a significant and positive association between attitude towards SDT with knowledge sharing practices, a significant difference and positive attitude towards SDT based on gender and teaching experience and a significant and positive difference in terms of knowledge sharing practices based on gender, teaching experience, and academic qualifications. However, the results revealed that there were no significant differences in the attitudes of SDT based on academic qualifications.This research also discussed about the findings, implications, and contributions to the body of knowledge and the country, as well as the direction of future research

Teacher quality standards: The differences in moral competency level among Malaysian teachers

The issue of quality standards for Malaysian teachers and the moral competency of teachers is a foundational part of the practice of Teacher Quality Standards in Malaysia and are fundamental to the formation of the Malaysian Education Development Plan (MEDP) 2013-2025. This paper discusses the level of teachers' moral competency and Teacher Quality Standards practice based on demographic factors (gender, age, class size, number of subjects taught, and school experience). This quantitative study used cross-sectional survey approach to collect data on current situation of moral competency and Teacher Quality Standards practice. A Stratified random and multistage sampling techniques were used to select 142 samples from the study population of teachers in National schools in Kedah, Perlis and Penang in Malaysia. The instruments used were the Moral Judgment Test (MJT) (Lind, 2000) and the College Teaching Behaviours Inventory (CTBI) (Braxton, & Bayer, 2003). The results showed significant differences in moral competencies based on age, gender, number of subjects taught, and teaching experience, and significant differences in terms of Teacher Quality Standards based on age, teaching experience, and number of subjects taught. These results provided a basic knowledge of the Teacher Quality Standards practice in national schools and its relationship to moral competency based on demographic and experience in school aspects. National school teachers who practiced Teacher Quality Standards demonstrated that they have the capacity for moral competency in self-governance by applying Teacher Quality Standards when making decisions and considerations in selecting ethical practices in developing national education in the future

Battery-Supercapacitor Current Control Using Fuzzy Supervisory with PI Controller for Electric Vehicle Application

The configuration of the battery-supercapacitor as a hybrid power source (HPS) is one solution to overcome the limitations of battery life, such as in an electric vehicle. To achieve battery energy savings when a supercapacitor is added, a control scheme is needed. This paper proposes a battery-supercapacitor current sharing control scheme using Fuzzy Supervisory Control (FSC). The FSC is designed to determine how much current of the battery and supercapacitor need to discharge based on the current requirement of the load. The output of the FSC will produce a reference current which is then controlled in the main closed-loop control using a Proportional-Integral (PI) controller. The control signal in the form of a duty cycle is then used to regulate the battery-supercapacitor current through a DC/DC converter. This control scheme is tested using a resistive load change scenario both simulation and experimental. The results show that the battery-supercapacitor current can be controlled according to the loading conditions

PENGARUH SIMPAN PINJAM TERHADAP PENINGKATANPENDAPATAN ANGGOTA KOPERASI PADA KOPERASI BERKAT CABANG PANAKUKANG KOTA MAKASSAR

Penelitian ini judulnya pengaruh kredit simpan pinjam terhadap peningkatan pendapatan anggota koperasi pada koperasi berkat cabang panakkukang Kota Makassar. Variabel dalam penelitian ini ada dua yaitvariabel kredit koperasi sebagai variabel bebas (X), dan variabel pendapatan anggota koperasi sebagai variabel terikat (Y). Teknik pengumpulan data yang digunakan adalah angket. Teknik analisis data yang digunakan adalah teknik analisis regresi linier sederhana. Hasil analisis menunjukkan bahwa variabel kredit koperasi nilai sig 0.013 nilai sig lebih kecil dari nilai probabilitas 0,05 atau nilai 0,013 < 0.05 maka Ha diterima dan H0 ditolak. Variabel kredit koperasi mempunyai thitung yakni 4,307 dengan ttabel = 1,943. Jadi thitung > ttabel (4,307 > 1,943), dari hasil analisis tersebut dapat dikutahi bahwa variabel kredit koperasi berpengaruh signifikan terhadap pendapatan anggota koperasi Simpan Pinjam Berkat Cab. Panakkukang Kota Makassar

Teacher quality standards: The differences in moral competency level among Malaysian teachers

The issue of quality standards for Malaysian teachers and the moral competency of teachers is a foundational part of the practice of Teacher Quality Standards in Malaysia and are fundamental to the formation of the Malaysian Education Development Plan (MEDP) 2013-2025. This paper discusses the level of teachers' moral competency and Teacher Quality Standards practice based on demographic factors (gender, age, class size, number of subjects taught, and school experience). This quantitative study used cross-sectional survey approach to collect data on current situation of moral competency and Teacher Quality Standards practice. A Stratified random and multistage sampling techniques were used to select 142 samples from the study population of teachers in National schools in Kedah, Perlis and Penang in Malaysia. The instruments used were the Moral Judgment Test (MJT) (Lind, 2000) and the College Teaching Behaviours Inventory (CTBI) (Braxton, & Bayer, 2003). The results showed significant differences in moral competencies based on age, gender, number of subjects taught, and teaching experience, and significant differences in terms of Teacher Quality Standards based on age, teaching experience, and number of subjects taught. These results provided a basic knowledge of the Teacher Quality Standards practice in national schools and its relationship to moral competency based on demographic and experience in school aspects. National school teachers who practiced Teacher Quality Standards demonstrated that they have the capacity for moral competency in self-governance by applying Teacher Quality Standards when making decisions and considerations in selecting ethical practices in developing national education in the future

Technology acceptance on smart board among teachers in Terengganu using UTAUT model

The purpose of this study is to seek the acceptance level of Smart Board among teachers in schools based on the construct presented by the UTAUT Model (Venkatesh et al., 2003).68 questionnaires were distributed to respondents who are teachers in five schools in the Besut District.These schools are among the many schools that are provided with Snmart Boards by the Terengganu government.The questionnaire consists of 4 items on demography, 19 items related to the usage of Smart Boards which uses the Likert Scale. The respondents were teachers who are familiar with using the Smart Boards.The data was analysed using SPSS to get the descriptive statistics and SmartPLS to find the coefficient correlation.The findings showed that there is positive significant influence between the Performance Expectancy factor (?=0.569, p<0.01) and the Facilitating Conditions factor (?=0.295, p<0.01) towards Behavioural Intention with the value of R2=0.72. Both the Performance Expectancy and the Facilitating Conditions factors showed that 72% of the teachers have Behavioural Intention to use the Smart Board during their teaching and learning process. Further study on the acceptance of Smart Board either among the teachers or students are vital because there are not many study has been and this technology is still new in Malaysian schools