PENGARUH PELAKSANAAN PRAKTEK KERJA INDUSTRI ( PRAKERIN ) TERHADAP HASIL UJI KOMPETENSI KEAHLIAN SISWA KELAS XII TN SMK NEGERI 2 NGANJUK

Competition in getting jobs by SMK graduateds is very competitive. This need to be supported by competent graduated competencies appropriated to their expertise. So the students are required to implement of industrial work practice. This program is expected to help students in implementing competency test that will get better. This study aims to identify and analyze the effect implementation of industrial practice on student competency test resulst of class XII TN SMK Negeri 2 Nganjuk. The population and sample is student of class XII TN was 63 students. Based on the data analyze with simple regression analysis, R Square resulting value of 0,840 means that implementation of industrial practice influenced competency test results of class XII TN SMK Negeri 2 Nganjuk by 84%, while the remaining 16% are caused by the other factors. The results showed that there was effect of the variable implementation of industrial practice to competency test results of class XII TN SMK Negeri 2 Nganjuk.  Keywords : Industrial Work Practice, Competency Tests

PERBEDAAN PENGARUH WORKLOAD DAN WORK ENVIRONMENT TERHADAP JOB SATISFACTION YANG DIMEDIASI OLEH WORK STRESS PADA KARYAWAN INDUSTRI SEPEDA MOTOR DI JAKARTA UTARA

This study aims to analyze differences in the influence of workload and work environment on job satisfaction mediated by work stress on motorcycle industry employees in North Jakarta. Respondents from this study used a sample size of 155 respondents. Sampling in this study uses non probability sampling method with a purposive sampling approach. Meanwhile, in testing the hypothesis using an analytical tool in the form of a Structural Equation Model (SEM). The results of hypothesis testing in this study indicate that workload has a positive effect on work stress, workload has a negative effect on job satisfaction, work environment has a negative effect on work stress, work environment has a positive effect on job satisfaction, work stress has a negative effect on job satisfaction mediated by work stress, and work environment has a positive effect on job satisfaction mediated by work stress. The implication of this research is that companies are expected to always pay attention to the workload given by the company to employees, maintain a work environment that supports work activities, pay attention to stress levels in employees, and continue to improve existing job satisfaction. Keywords: workload, work environment, work sress and job satisfaction Penelitian ini bertujuan untuk menganalisis perbedaan pengaruh workload dan work environment terhadap job satisfaction yang dimediasi oleh work stress pada karyawan Industri Sepeda Motor di Jakarta Utara. Responden dari penelitian ini menggunakan jumlah sampel sebanyak 155 responden. Pengambilan sampel dalam penelitian ini menggunakan metode non probability sampling dengan pendekatan purposive sampling. Sedangkan dalam pengujian hipotesis dengan menggunakan alat analisis berupa Structural Equation Model (SEM). Hasil pengujian hipotesis dalam penelitian ini menunjukkan bahwa workload berpengaruh positif terhadap work stress, workload berpengaruh negatif terhadap job satisfaction, work environment berpengaruh negatif terhadap work stress, work environment berpengaruh positif terhadap job satisfaction, work stress berpengaruh negatif terhadap job satisfaction, workload berpengaruh negatif terhadap job satisfaction yang dimediasi oleh work stress, dan work environment berpengaruh positif terhadap job satisfaction yang dimediasi oleh work stress. Implikasi penelitian ini adalah diharapkan perusahaan selalu memperhatikan workload yang diberikan perusahaan kepada karyawan, mempertahankan work environment yang menunjang kegiatan kerja, memperhatikan tingkat stres pada karyawan dan terus meningkatkan job satisfaction yang ada. Kata Kunci: beban kerja, lingkungan kerja, stress pekerjaan dan kepuasan pekerjaan

Case Study of a Small Scale Reverse Osmosis System for Treatment of Mixed Brackish Water and STP Effluent

A case study on utilizing reverse osmosis (RO) technology to fulfill fresh water needs at a mall and a hotel has been done on Bali Island, Indonesia. A mix of brackish water and sewage treatment plant (STP) effluent was used as feed water in the RO system. The system used 36 membrane elements (CSM RE 8040 BLN) arranged into two stages: 8 pressure vessels (PVs) in the first stage and 4 PVs in the second stage, each loaded with 3 membranes. The objectives of this research were to assess the cleaning effectivity in the plant, to evaluate the cleaning of 1 membrane element using a CIP system, and to assess the use of the membrane for filtration in the pre-treatment system. SEM and FTIR analysis indicated that the foulants on the membrane surface were dominated by organic foulants and inorganic deposits. To clean the discarded membrane the proposed method used NaOH solution (pH 12 and pH 13) and citric acid (pH 2 and pH 3). All membranes displayed a dramatic decline in rejection of about 80%. Based on the rejection tests of SO42-, Cl-, turbidity reduction approached 100%. It can be concluded that an RO membrane that has undergone selectivity decline can be re-used as a filtration membrane in the pre-treatment system

APLIKASI PEMBELAJARAN SEJARAH KEHIDUPAN MANUSIA PURBA DI INDONESIA

Manusia purba adalah salah satu materi pelajaran sejarah yang diajarkan di kelas X pada silabus mata pelajaran sejarah. Banyak yang berpendapat bahwa sejarah menjadi salah satu pelajaran yang kurang diminati, salah satu penyebabnya karena siswa hanya mendengarkan cerita dari guru di depan kelas dan sulitnya guru memberikan materi kepada siswa hanya dengan bercerita. Salah satu materi yang ada di dalam sejarah kelas X adalah jenis-jenis manusia purba, hasil kebudayaan manusia purba, perkembangan biologis manusia purba, sistem kepercayaan manusia purba, dan perkembangan kehidupan manusia purba. Selama ini metode pembelajaran yang diterapkan kebanyakan masih bersifat konvensional, di dalam penyampaiannya masih menggunakan media papan tulis serta sebatas gambar dari buku. Masih sedikitnya visualisasi dinamis dan kurangnya media pembelajaran interaktif yang membuat kurangnya minat siswa untuk belajar. Pada skripsi ini dibuat aplikasi berbasis web dan multimedia untuk pembelajaran sejarah manusia purba yang dapat memotivasi siswa untuk meningkatkan minat belajar dan penguasaan materi dalam belajar sejarah kehidupan manusia purba. Untuk referensi data-data mengenai sejarah kehidupan manusia purba diperoleh dari buku materi pelajaran kelas X dan melalui media internet. Metode yang digunakan dalam perancangan dan pembuatan aplikasi ini adalah Waterfall, sedangkan teknologi yang digunakan untuk membangun aplikasi ini adalah Macromedia Dreamweaver 8.0 dengan bahasa pemrograman PHP dan database MySQL, Adobe Flash CS5, dan Adobe Photoshop CS5 sebagai penunjang. Aplikasi ini dilengkapi dengan fasilitas gambar, teks, audio, video, download dan evaluasi soal latihan sehingga lebih menarik dan menambah minat belajar. Hasil dari penelitian ini adalah aplikasi pembelajaran sejarah kehidupan manusia purba di Indonesia

Pengaruh Pembelajaran Daring Learning Management System (LMS), Multimedia dan Motivasi Belajar Terhadap Kemampuan Pemahaman Membaca Peserta Didik

This study has the objectives: (1) to determine the effect of online learning management system (LMS) with multimedia on student motivation, (2) to determine the effect of online learning management system (LMS) with multimedia on students' reading comprehension ability, (3) To find out the effect of motivation on students' reading comprehension ability, and (4) To find out the interaction between online learning management system (LMS) learning with multimedia and learning motivation on students' reading ability. This study uses an experimental design which is divided into two classes, namely online learning management system (LMS) with multimedia and online learning management system (LMS) without multimedia where in the data analysis technique process used is 2-way analysis of Variance (Anava). The population of this study was students of class IV with the research sample being students of class IVA and class IVB which totaled 72 students. Based on the results of calculations with Anava, it is obtained FA count > F table (8.292 > 4.02) which explains that online learning management system (LMS) learning with multimedia has a significant effect on students' reading comprehension ability; FB count > F table (9.871 > 4.02) which explains that motivation has a significant effect on students' reading comprehension ability; and FAB count > F table (4.787 > 4.02), which explains that there is an interaction between online learning management system (LMS) learning and multimedia and learning motivation on students' reading abilities

Fermentasi Kitin dari Limbah Cangkang Kepiting Menggunakan Jamur Rhizopus Oryzae pada Berbagai Kadar Air

Chitin on crab shell waste can be obtained by fermentation process use Rhizopus oryzae. The objective of this research are to determine the optimum of water content on crab shell waste fermentation by Rhizopus oryzae for chitin production. Fermentation process is carried out for 72 hours, 5 of pH, 37oC, and 10% (v/w) of inoculum addition. Water content on fermentation process were varried whithin 40%, 50%, and 60% respectively. Fermentation process were carried out by 40% of water content reported as the optimum based on the deproteinization degree and the solubility in acidic solution

Fouling dan Cleaning Membran Reverse Osmosis Tekanan Rendah untuk Aplikasi Daur Ulang Air Limbah Domestik

Separation process by reverse osmosis membrane for wastewater reuse is an advantage process because of feasible cost and able to produce high quality of product water. The used of RO membrane on wastewater reuse application is often limited by fouling phenomena, that is the accumulation of some types of foulant on the membrane surface. An understanding of the foulant types and the fouling mechanism is the key to success in RO membrane chemical cleaning. This review discusses numerous works about the fouling mechanisms and cleaning procedures

Fouling dan Cleaning Membran Reverse Osmosis Tekanan Rendah untuk Aplikasi Daur Ulang Air Limbah Domestik

Separation process by reverse osmosis membrane for wastewater reuse is an advantage process because of feasible cost and able to produce high quality of product water. The used of RO membrane on wastewater reuse application is often limited by fouling phenomena, that is the accumulation of some types of foulant on the membrane surface. An understanding of the foulant types and the fouling mechanism is the key to success in RO membrane chemical cleaning. This review discusses numerous works about the fouling mechanisms and cleaning procedures

Pembuatan dan Pengujian Pupuk Organik Cair (POC) dari Limbah Pasar dengan Menggunakan Bioaktivator EM4

Organic waste from market rubbish can be utilized as liquid organic fertilizer. In general, liquid organic fertilizers contain nutrients such as Nitrogen, Phosphorus, Potassium, and C-Organic that are needed by plants. The objective of this research are to manufacture liquid organic fertilizer through anaerobic fermentation from market rubbish with the addition of an EM4 bio activator and to determine the optimum time. The nutrients content were determined using the Kjeldahl method, UV-VIS Spectrophotometry, and Atomic Adsorption Spectroscopy. Liquid Organic Fertilizer that had the best quality among all types is from non-green vegetable. It has 0,45% of nitrogen, 0,08% of phosphorus, 0,34% of potassium, and 2,8% of C-organic respectively. The optimum time for POC fermentation occurred on the 14th day. The nutrient levels of all types of liquid organic ferilizer produced have not meet the minimum technical requirements of the quality of liquid organic fertilizers based on the Decree of the Minister of Agriculture of the Republic of Indonesia Number 261/Kpts/Sr.310/M/4/201

Increasing Food Security Through Waste Management In Pandemic Time

The abstract of the During the pandemic, people's activities were dominantly carried out at home, resulting in increased online shopping activities and their packaging which caused accumulation of household waste. The RW 05 area of Sukamenak Village, Margahayu District, Bandung does not yet have independent waste management, coupled with the low awareness and knowledge of residents about waste. Some residents were affected by layoffs, as a result of which the fulfillment of food needs was disrupted. This is the starting point for the waste problem in RW 05. Bandung State Polytechnic (Polban), takes a role in helping to solve this problem. PKM activities aim is to increase public knowledge in sorting household waste through the 3R program (Reuse, Reduce, Recycle), effective management of inorganic and organic waste, Budikdamber (Cultivating Fish in Ember) aimed at increasing family food security, and building a bank The methods used are training, technical guidance in the field, mentoring, and evaluation. The results of the activity show that inorganic waste management produces daily necessities and can be sold to increase income. Organic waste is processed into liquid fertilizer and solid fertilizer for yard greening. Catfish and kale from Budikdamber can increase family food security, especially meeting protein and vegetable needs. The construction of the "Suka Berseri RW 05" waste bank can reduce the volume of waste and residents can withdraw their savings at any time. The results of the questionnaire show that people's awareness and knowledge on waste management increased significantly