Pengaruh Pelatihan dan Motivasi Kerja terhadap Kinerja Pegawai Sekretariat Direktorat Jenderal Pengelolaan Pembiayaan dan Risiko Kementerian Keuangan

This research aimed to determine whether there is influence between Training and Work Motivation to Employee Performance of Directorate General of Financing and Risk Management Ministry of Finance of Indonesia. This research uses the quantitative method. The number of samples in this research was 50 respondents. This research uses the purposive sampling method to determine the samples with the criteria of employees who had attended training in 2016 – 2017. Method of completion of data used in this research were a questionnaire, interviews, and research literature. The result of t-test shows a significant influence of training variable on employee performance with t-value 2.382, meanwhile work motivation variable does not significantly affect the employee performance with t-value 1.654. Training and Work motivation variables simultaneously have an effect of 21.3% on employee performance. Keywords: training, motivation, performanc

Pengaruh waktu tahan pack carburizing dan penggunaan media quenching cane molasses terhadap sifat mekanik dan struktur mikro baja karbon rendah

 Pack carburizing is one of the methods used to increase the carbon content in steel by using solid media. In this study, the addition of carbon elements was carried out using teak wood charcoal and cow bone powder, after that in quenching using cane molasses. Variations used for holding time are 2 hours, 4 hours, and 6 hours, variations in cane molasses content used 10%, 20%, 30%, and the percentage comparison between cow bone powder and teak wood charcoal is 50%:50%. The results of this study show that the pack carburizing resistance time factor is more influential on the mechanical properties and microstructure of low carbon steel. The highest hardness value is found at a holding time of 6 hours with quenching cane molasses 20% of 799.95 kg/cm2 and the lowest hardness value is found without treatment of 162.62 kg/cm2. For the highest impact toughness is found without treatment of 2.02 Joule/mm2 and the lowest impact toughness value is found at holding time of 6 hours with quenching cane molasses 20% of 1.127 Joule/mm2. For microstructures formed after treatment, martensite structures are formed due to rapid cooling

The Influence of the Pack Decarburizing Process with Pinctada Maxima Shell Powder Agent on the Properties of High Carbon Steel

In the present study, ductility enhancement of high carbon steel AISI 420 was conducted by pack decarburizing method to improve mechanical properties of this steel. This specimen was placed in a rectangular box containing pinctada maxima shell powder (PMSP) mixed with the carburizing agent with different percentage variations and heat treated in an oxygen atmosphere at different temperatures and soaking times. Phase analysis results indicated that the pack decarburizing process at a temperature of 900 °C, for soaking time 3 hours and an additional 30 % PMSP in the carburizing agent causing the martensit microstructure, the surface hardness number and thickness of carbon layer decreased but the impact energy of high carbon steel AISI 420 increased. The surface hardness number, carbon layer thickness each respectively decreased by 63 % and 60 %, but impact energy or impact strength increased by 33 %. This phenomenon indicates that the pack decarburizing treatment causes carbon diffusion from the surface of the specimens to the carburizing agent or reverse carbon diffusion occurs, because the concentration of carbon in the carburizing agent is higher than the surface of the specimen. The addition of PMSP in the carburizing agent increases the occurrence of carbon diffusion from the surface of specimens to the carburizing agent or reverse carbon diffusion occurs, because differences in concentration and influence of PMSP contains elements of Ca which function as catalysts or energizers. The results showthat the pack decarburizing process with an additional PMSP in the carburizing agent accelerates the diffusion of carbon atoms out the surface of the specimens (reverse carbon diffusion process), thus decreasing the thickness of the surface carbon layer, surface hardness number and increasing the impact energ

On the electrical and detection performances of particle detectors based on bulk semi-insulating InP

A study of electrical transport and detection performances of the bulk semi-insulating InP-based detectors of charged particles and γ rays is presented. The best detectors give a charge collection efficiency over 90% and energy resolution about 3% (FWHM) for 5.48 MeV α-particles and an energy resolution about 7% (FWHM) for 122 keV γ-rays at 220 K. Detection performances versus temperature, contact systems and bias voltage polarity have been discussed

Semi-insulating InP particle detectors for X- and γ-ray detection

A study of electrical properties and detection performances of the semi-insulating (SI) InP based detectors is presented. Detectors with a top P+ layer and a Schottky back contact give the charge collection efficiency about 90% and an energy resolution 3.7% (FWHM) for 5.48 MeV α-particles at 250 K. Detection of X-rays (122 keV and 60 keV) photons in temperature region 220-250 K is demonstrated. Multiple peaking observed during detection of photons is discussed

Electrical and detection performances of particle detectors based on bulk semi-insulating InP

A study of electrical transport properties and detection performances of the semi-insulating InP-based detectors of charged particles and ionizing radiation is presented. Detectors with a top P+ layer and a Schottky back contact give a charge collection efficiency over 90% and energy resolution about 3% (FWHM) for 5.48 MeV α-particles at 220 K. Detection of 60, 122 and 662 keV γ-rays in a temperature range 215÷250 K is demonstrated