Technical skills and employability skills of vocational high school students in Indonesia

Abstract: The objective of this research was to determine the development of technical skills and employability skills of vocational high school students in terms of the implementation contribution of scientific approach. The research used a quantitative approach of non-experimental design with the type of survey called ex-post facto. The research population is made up of 523 students of mechanical engineering skills package with the sample of 221 students (172 males and 49 females). Data collection techniques used were a test, questionnaire, and documentation. The data were analyzed using descriptive analysis and structural equation modeling (SEM). The results showed that the implementation of scientific approach has significant contributions towards the mastery of technical skills and the impact on the employability skills of vocational students. Hence, it can be said that the technical skills and employability skills can be developed through the implementation of a scientific approach

Carbon Nanotube-Activated Thin Film Transparent Conductor Applications

Carbon nanotubes are an exciting nanomaterial system that exhibit exceptional mechanical and electrical properties. Due to its small diameter of ∼1 nm and high aspect ratio in order of 103, they can readily form interconnected conducting network of continuous film with high transparency. Transparent conductor based on carbon nanotube can be grown directly into a thin-film structure, or can be processed after the growth process. Post-growth arrangement of carbon nanotube into transparent conducting thin films can be achieved by several methods. Most of the methods involve solution-processed approach, while dry-processed approach is also possible. This chapter presents a comprehensive review and methods for fabricating transparent carbon nanotube-activated thin film, which generally demonstrate high conductivity and mechanical flexibility. Comparison on the optical and electrical performance of the carbon nanotube-activated transparent conductors fabricated via different methods is presented in the chapter

A new method of transient stability assessment in power systems using LS-SVM

This paper presents transient stability assessment of electrical power system using least squares support vector machine (LS-SVM) and principle component analysis. Transient stability of a power system is first determined based on the generator relative rotor angles obtained from time domain simulation outputs. Simulations were carried out on the IEEE 9- bus test system considering three phase faults on the system. The data collected from the time domain simulations are then used as inputs to the LS-SVM in which LS-SVM is used as a classifier to determine the stability state of a power system. Principle component analysis is applied to extract useful input features to the LS-SVM so that training time of the LS-SVM can be reduced. To verify the effectiveness of the proposed LS-SVM method, its performance is compared with the multi layer perceptron neural network. Results show that the LS-SVM gives faster and more accurate transient stability assessment compared to the multi layer perceptron neural network in terms of classification results

Morphology and Electrical Characteristics of Single-Walled Carbon Nanotubes Film Prepared by Air Brush Technique

This study is to investigate the morphology and electrical characteristics of single-wall carbon nanotubes (SWCNTs) thin film deposition using air brush technique. A deposition setup consisting of a conventional artist air brush was developed and used to deposit SWCNT thin films and therefore the resulting film’s characteristics need to be investigated to gauge its suitability in producing uniform monolayer. The SWCNTs used were synthesized via Direct Injection Pyrolytic Synthesis (DIPS) method, with diameters ranging from 0.8 to 3 nm. The substrate was deposited using an airbrush with varying nozzle to study its effect to the resulting SWCNTs thin films’ characteristics. Subsequently, scanning electron microscope (SEM) were used to inspect the morphology and surface topography, and followed by preliminary electrical measurements. The result shows that good dispersion promotes uniform distribution of SWCNTs over large area of glass substrate. Moreover, the electrical measurement revealed that at 1 V, best morphology produced highest current at a nozzle height of 10 mm (15.3 µA) and the lowest current at a nozzle height of 4 mm (3.24 µA). From the results presented, it is demonstrated that conventional artist airbrush setup can be effectively used to deposit monolayer thin film of SWCNT with high degree of uniformity. This research is necessary for the process of depositing-controlled CNT thin film network, which can influence the material characteristics and performance of the variety of CNT-based device applications

TESTING THE MEDIATION ROLE OF PUBLIC SERVICE QUALITY IN THE RELATIONSHIP BETWEEN INTERNAL CONTROL IMPLEMENTATION AND GOOD GOVERNMENT GOVERNANCE OF THE REGIONAL GOVERNMENT OF NORTH SUMATRA USING SEM-PLS

The North Sumatra Regional Government has a significant responsibility in organizing effective and accountable governance for the welfare of its people. The implementation of internal control (ICI) is crucial in achieving this goal. Effective internal control can help optimize resource management and prevent fraud and abuse of power. This study examines the mediating role of public service quality (PSQ) in the relationship between internal control implementation and good governance (GGG) in PDSU. The analysis using the SEM-PLS model shows that internal control implementation has a significant direct influence on public service quality. However, the direct influence of public service quality on good governance is not statistically significant. The implication of these findings is the importance of enhancing internal control implementation to improve public service quality, even though the direct influence of public service quality on good governance is not statistically supported in this study

Pandangan Tokoh Muhammadiyah Di Kota Kupang Terhadap Childfree

In marriage that has been prescribed in Islam, having children is one of the goals of marriage because children are the best investment for both parents, religion, society, and the country. But over time, having children is no longer the goal in marriage, there are some couples who choose not to have children. This term is called childfree. In this study, the problems raised by the researcher are: 1) How does the decision of childfree become a life choice for the people of Kupang City. 2) How is childfree according to the view of Muhammadiyah leaders. The purpose of this study was to find out the in-depth reasons for the decision of childfree being the life choice of the people of Kupang City and to find out the views of Muhammadiyah leaders in Kupang City on childfree. The type of research used in this research is field research. The data collection method used in this study was obtained through interviews and documentation. Child-free decisions are decisions that a person makes consciously. Choosing not to have children is not easy, and requires a time-consuming decision-making process that takes into account many factors, including rejection from family members and those closest to you, as well as social pressure. Even so, people with this choice feel that the choice not to have children makes them feel like they are living the free life of their dreams. However, Muhammadiyah leaders in Kupang City did not justify this decision, because it was not in accordance with the purpose of marriage, one of which was to have children. All informants also share the same view, namely, that child-freedom will be allowed if it contains an emergency (maslahah dharuriyat) for example a couple with a medical history does not allow them to have children. Keywords: Childfree, Descendants, Choice, Character ViewIn marriage that has been prescribed in Islam, having children is one of the goals of marriage because children are the best investment for both parents, religion, society, and the country. But over time, having children is no longer the goal in marriage, there are some couples who choose not to have children. This term is called childfree. In this study, the problems raised by the researcher are: 1) How does the decision of childfree become a life choice for the people of Kupang City. 2) How is childfree according to the view of Muhammadiyah leaders. The purpose of this study was to find out the in-depth reasons for the decision of childfree being the life choice of the people of Kupang City and to find out the views of Muhammadiyah leaders in Kupang City on childfree. The type of research used in this research is field research. The data collection method used in this study was obtained through interviews and documentation. Child-free decisions are decisions that a person makes consciously. Choosing not to have children is not easy, and requires a time-consuming decision-making process that takes into account many factors, including rejection from family members and those closest to you, as well as social pressure. Even so, people with this choice feel that the choice not to have children makes them feel like they are living the free life of their dreams. However, Muhammadiyah leaders in Kupang City did not justify this decision, because it was not in accordance with the purpose of marriage, one of which was to have children. All informants also share the same view, namely, that child-freedom will be allowed if it contains an emergency (maslahah dharuriyat) for example a couple with a medical history does not allow them to have children

PENGARUH KAPASITAS SUMBER DAYA MANUSIA, PERENCANAAN ANGGARAN DAN POLITIK PENGANGGARAN, DENGAN TRANSPARANSI PUBLIK SEBAGAI VARIABEL MODERATING TERHADAP SINKRONISASI DOKUMEN APBD DENGAN DOKUMEN KUA - PPAS PADA PEMERINTAH KABUPATEN ACEH TENGGARA

The purpose of this study was to look at the influence of the capacity of human resources, budget planning and budgeting politics on the synchronization between Regional Revenues and Expenditures Budget (APBD) document and General Policy of Regional Revenues and Expenditures Budget (KUA) - Provisional Budget Ceiling Priority (PPAS) document and to test the role of public transparency in moderating the relationship between the capacity of human resources, budget planning, budgeting politics with the synchronization between APBD document and KUA-PPAS document. The population of this study was 123 persons consisting of legislative members and officials/employees who were involved in the preparation of the Work Plan and Budget of 29 Regional Apparatus Working Units and all of them were selected to be the samples for this study by using census sampling method. The data used in this study were primary data obtained through the questionnaires directly distributed to the respondents. The data obtained were analyzed through multiple linear regression tests and interaction test. Hypothesis was simultaneously and partially tested through F test and t test. The result of hypothesis test in this study showed that simultaneously the variables of capacity of human resources, budget planning and budgeting politics had a positive and significant influence on the synchronization between APBD document and KUA-PASS  document, and partially, capacity of human resources and budgeting politics had a significant influence on the synchronization between APBD document and KUA-PASS document while budget planning had a negative and signifcant influence. The result of the interaction test showed that public transparency could not moderate the relationship between the capacity of human resources, budget planning and budgeting politics and the synchronization between APBD document and KUA-PASS document. Keywords     :  APBD, KUA, PASS, Human Resource Capacity, Budget Planning, Budgeting Politics, Public Transparenc

Characterization of transparent conducting carbon nanotube thin films prepared via different methods

The fabrication and characterization of transparent conductors based on single walled carbon nanotube (SWCNT) thin films were carried out in controlled environment and its performance compared. Here, we demonstrate the fabrication of thin, transparent, optically homogeneous, electrically conducting films of metallic enriched single-walled carbon nanotubes via three different deposition techniques namely dip coating, vacuum filtration and Langmuir Blodgett. Optical characterization showed that the maximum transmittance, TM, in Vis region is ~ 96.3% and minimum surface roughness, Ra ~ 4.87 nm achieved via Langmuir-Blodgett technique. I-V characteristics shows minimum sheet resistance, Rs ~ 3.62 × 103 Ω/sq and maximum conductivity, σ ~ 27.65 Ω-1cm-1 for vacuum filtration technique. It is shown that SWCNT deposition technique significantly affects the optical and electrical characteristics of resulting thin films. Langmuir Blodgett method produced film with the lowest surface roughness of Ra ~ 4.87 nm and uniform conductivity of σ ~ 0.025 Ω-1cm-1, whereas vacuum filtration method produced film with the highest surface roughness of Ra ~ 12.83 nm and non-uniform conductivity, σ, ranging from ~ 0.199 to ~0.017 Ω-1cm-1 depending on the film dimensions

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