Hubungan Perilaku Proaktif terhadap Intensi Turnover pada Management Trainee PT “X”

Penelitian ini dilakukan untuk melihat hubungan dari peningkatan perilaku proaktif dengan intensi turnover pada Management Trainee (MT) di PT “X”. Pengukuran awal dilakukan untuk mengetahui hubungan antara perilaku proaktif dengan intensi turnover pada MT, dari 15 orang MT ditemukan bahwa terdapat hubungan yang signifikan antara perilaku proaktif dengan intensi turnover pada MT di PT “X” dengan nilai koefisien korelasi sebesar -0.51* dan nilai signifikansi 0.01 (p<0.05). Dari hasil data tersebut dilihat MT menunjukan perilaku proaktif yang rendah dan intensi turnover yang tinggi. Oleh karena itu peneliti mengusulkan program coaching untuk meningkatkan perilaku proaktif yang diharapkan dapat menurunkan intensi turnover pada MT di PT “X

RANCANG BANGUN ALAT TES USAP BERBASIS ROBOTIK UNTUK PENENTUAN TINCKAT KONTAMINASI RADIOAKTIF PERMUKAAN = (The Design of Robotic Smear Test Devices for Surface Radioactive Contamination Determination)

Smear test is a method to measure the level of surface radiOactive contamination. The objective of this research is to design and develop a mobile robot manipulator which is used to put the smear lest device on its monitoring position. This robot minimizes the contact between human and radioactive contamination area. This mobile robot manipulator consists of a mechanical system with two main bodies, i.e. arm and platform, and an electrical system as telecontroller for manipulator motion. Joystick analog signal is converted to digital by ADC. Rx/Tx transmits this signal by using radio wave at frequency of 27 MHz and Amplitude Shift Keying (ASK) modulation. This signal is used to generate the PWM (Pulse Width Modulation) pulse to control the platfbrin DC motor velocity and arm DC motor ONIOFF. The result of this research shows that the robotic smear test device can perform smear tests with spiral and \u27S\u27 smear method on the top of table, part of wall, and floor, appropriate with command of joystick input from distance of 5 meter

STUD\u27 BENTUK `S\u27 SEBAGAI ALTERNATIF BENTUK PENGUSAPAN TES USAP UNTUK MENENTUKAN TINGKAT KONTAMINASI RADIOAKTIF PERMUKAAN = (The Study of "S" Smear Method as An Alternative of Smear Test for Surface Radioactive Contaminat

Smear lest is an indirect method to measure the level of surface radioactive contamination. The smearing method has been developed with "S- smear as well as spiral method. The device of smear tes is succesfulh, tested by using \u275\u27 smeared methodto determine the level of radioactive contamination on a surface. Smear test device is tested according to the contaminated level analysis which involved change of the length of cotton bud, the different of initial activity and the results of the research will be compared with those of the spiral method. The conclusion is that the longer cotton bud used, it makes the pressure decrease and that it will decrease the removal factor and the level of surface contamination The results of observation show that 3.5 cm smearer cotton bud works optimally which have removal factor was 3.940%. 3.845%, 3.857 %, 3,870%, and 3.884% with the contaminated level of 18.127 BqIcmj, 36.241 Bqkny\u27,54.222 &gem\u27, 70.374 Bq/cm? and 86.209 BqIcm: respectively. The level of surface radioactive contamination by \u27S\u27 method was lower than by the spiral method

Development of Fluid Catalytic Cracking Distributed Simulator Based on IEC 61499

Fluid Catalytic Cracking (FCC) is one of the most important process units in oil refining. Operator skill is one of the determining factors for operational success. The operator cannot train his skills at the plant because it will endanger the ongoing process. Operators' skills can be trained through simulation media. This study developed an FCC model IV process simulator to meet these needs. The application of the IEC 61499 standard uses to create simulation models based on IEC 61499 runtime environments (FORTE). Model validation based on reference simulations. The average percentage of error steady under normal operating conditions is 1.63%. Mean Absolute Percentage Error (MAPE) values for changes in the coking factor, atmospheric temperature and feed temperature are 4.40%, 7.26%, and 6.05%, respectively. Modeling of FCC products on 6 components (gas oil, diesel oil, gasoline, light gas, liquid petroleum gas, and coke) was added as a simulation result. Percent of gas oil conversion between simulation results and plant data has an error of 0.12%. The total fraction value of the components of the simulation results is 1.00 for each operating condition. The simulator interface in the form of a human-machine interface (HMI) was developed using Node-RED. Data communication between FCC simulation models on FORTE and HMI on Node-RED uses the Message Queuing Telemetry Transport (MQTT) communication protocol. Implementation of the IEC 61499 standard allows the simulation model to be distributed across several resources. The distribution of resources is done by simulating the FCC process to be run on several FORTE. The FCC simulation model distributed at 2, 4, and 7 resources can reduce memory usage compared to the 1 centralized resource model by 18.0%, 36.0%, and 48.8%

HUBUNGAN PERILAKU PROAKTIF TERHADAP INTENSI TURNOVER PADA MANAGEMENT TRAINEE PT “X”

Abstrak: Penelitian ini dilakukan untuk melihat hubungan dari peningkatan perilaku proaktif dengan intensi turnover pada Management Trainee (MT) di PT “X”. Pengukuran awal dilakukan untuk mengetahui hubungan antara perilaku proaktif dengan intensi turnover pada MT, dari 15 orang MT ditemukan bahwa terdapat hubungan yang signifikan antara perilaku proaktif dengan intensi turnover pada MT di PT “X” dengan nilai koefisien korelasi sebesar -0.51* dan nilai signifikansi 0.01 (p<0.05). Dari hasil data tersebut dilihat MT menunjukan perilaku proaktif yang rendah dan intensi turnover yang tinggi. Oleh karena itu peneliti mengusulkan program coaching untuk meningkatkan perilaku proaktif yang diharapkan dapat menurunkan intensi turnover pada MT di PT “X

Analisis Koefisien Dispersi Dan Retardasi Fosfat Pada Tanah Di Sekitar Tempat Pembuangan Akhir Limbah Domestik Menggunakan Perunut 32p (Analysis Of Phosphate Dispersion And Retardation ...

ABSTRAK The domestic waste of a final disposal content more of 30% of phosphate. Diluted phosphate in water can be transported, dispersed and spread into environment. Phenomenon of phosphate mass transport diluted in water especially dispersion and retardation coefficient need to be analysed to recognize the migration pattern. Dispersion and retardation coefficient can be determined experimentally in laboratory using radioactive tracer. Physical modelling was done to obtained phosphate concentration data at different times and distances. Phosphate concentration data obtained from physical model were used to verify mathematical model to obtain dispersion and retardation coefficient by Hooke Jeeves numerical optimation method according to the partial differential equation that was approximated by minimize of sum of squares of error A Research of phosphate mass transfer phenomenon, physically and mathematically, have been done. The NaH2PO4.2H20 was mixed with soil from the domestic waste a final disposal. Water fed to this soil-then diluted phospate fed to soil box that has porosity 0,3030 with flow rate 56,5 ml/min. The Phosphate level were determined on 0, 35, 70, 105 and 140 cm at 0, 30, 60, 90, 120, 150 180 and 210 minutes. Phosphate level decreased according to position. Computer program were running well and resulted 0,011 cm2/min for dispersion coefficient and 56 for retardation with 3.9114E-04 Sum of Squares of Error (SSE) or 38 % for average relative error. Keywords : Mass Transfer, Dispersion Coefficient, Retardation Coefficient, Radioactive Trace

Studi Karakterisasi Migrasi Fosfat Lumpur Ipal YOGYAKARTA Dalam Tanah Menggunakan Perunut 32p

IPAL Yogyakarta mud contains high concentration of phosphate that can polute groundwater. To study phosphate migration with matematical model needs the data of soil properties and phosphate migration characterization in that soil. The phosphate migration characterization is determine in laboratorium scale using soil colomn nethod. The soil that are used in this research are soil at IPAL location (IPAL soil) and soil at soil at Physics Engineering Department GMU (PE soil). The tracer that is used is 32P radioisotop dan the detector is Geiger Muller detector. For IPAL soil the soil mass is 20 g, soil length is 2,1 cm, water height is 20 cm, and the flow rate of water 0,0038 cm3/s. For PE soil the soil mass is 25 g, soil length is 2,2cm, water height is 20 cm, and the flow rate of water are 0,0275 cm3/s and 0,0071 cm3/s.The result shows that IPAL soil is clay class soil and PE soil is sand class soil. The IPAL soil porosity is 0,2997 and PE soil is 0,303. IPAL soil permeability is 5,6984x10-5 cm/s and the average velosity is 1,79x10-4 cm/s. On PE soil for the flow rate of 0,0275 cm3/s the soil permeability is 4,338x10-4 cm/s, average velocity is 1,2818x10-2 cm/s, distribution coefficien is 0,88 ml/g, dispertion coefficien is 8,0971x10-3 cm2/s, phosphate migration velocity is 3,6429x10-3 cm/s, and the retardation factor is 3,5186. For the flow rate of 0,0071 cm3/s the soil permeability is 1,110x10-4 cm/s, average velocity is 3,322x10-3 cm/s, distribution coefficien is 1,345 ml/g, dispertion coefficien is 2,5339x10-3 cm2/s, phosphate migration velocity is 9,8888x10-4 cm/s, and the retardation factor is 3,3594. For the higher of flow rate the migration is higher. IPAL soil has capability to hold polutans

Komparasi Pemodelan dan Identifikasi Sistem pada Dinamika Temperatur Gas Buang Ruang Bakar pada Circulated Fluidized Bed Boiler

Seringkali fokus pembangkitan listrik di PLTU adalah pada kondisi uap (T & P), jumlah produksi uap (ton/h) dan beban daya (100%) namun efisiensi pembakaran jarang diperhatikan sehingga menyebabkan kerusakan mesin. Indikator efisiensi pembakaran batu bara adalah dinamika temperatur gas buang ruang bakar. Untuk mendapatkan sistem instrumentasi-kendali yang handal dan efisien dibutuhkan pemahaman mendalam terhadap sistem. Langkah untuk meningkatkan pemahaman dapat dengan cara membentuk dan memahami model matematis sistem.Penelitian ini bertujuan mendapatkan model matematis dari fenomena dinamika temperatur gas buang ruang bakar. Pemodelan dilakukan dengan membandingkan metode matematis dan identifikasi sistem. Pemodelan matematis dilakukan dengan menggunakan neraca massa dan neraca energi, sedangkan identifikasi sistem dilakukan dengan menggunakan struktur model multiple-input-single-output ARMAX sebagai pendekatan sistem linier. Setelah model didapatkan, model divalidasi dengan data lapangan pada kondisi operasi. Hasil validasi model berupa prediksi dinamika temperatur gas buang ruang bakar dari masing-masing metode dibandingkan kualitasnya (fit & MSE). Dengan menganalisis hasil didapatkan bahwa model hasil pemodelan matematis menghasilkan nilai kesesuaian kurva sebesar 86,4218% dan nilai galat kuadrat rerata sebesar 0,1632 oC dan model hasil identifikasi sistem menghasilkan nilai kesesuaian kurva sebesar 86,8596% dan nilai galat kuadrat rerata sebesar 0,1529 oC

Perancangan Struktur Kontrol Penggilingan Batubara pada Sistem Pembakaran Batubara

The inability of the coal mill control structure to monitor and control pulverized coal flow causes operational and environmental problems. The research was done to design the new control structure for coal mill in coal firing system to achieve an improvement on control system performance compared to the existing control structure. Cascade control, blend station, and feedback control was used to control the flow of coal, the flow of primary air, and temperature of the pulverized coal. The result of the evaluation shows that the new control structure capable of fulfilling all the control objectives applied to it. Implementation of the new control structure capable to make the step response of the coal mill to have an average settling time at 161.75 seconds with 0% overshoot. The new control structure also capable to make the pulverized coal fineness at the range of 70% to 75% and moisture content at the range of 2.18% to 2.28%. The result of the evaluation makes the control performance of the new control structure is better than the previous coal mill control structure

Developing Nuclear Security Capacity of Indonesia’s Police and Security Officer: Lessons from Universitas Gadjah Mada’s Pilot Training

Due to an increase in global nuclear security issues, there need to be improvements in human resources and security measures. The Republic of Indonesia is an archipelago country, which makes surveilling for nuclear security threats complicated. Recent radioactive material smuggling incidents proved that Indonesian police and security officers’ knowledge in nuclear security has been challenged and must be improved. In response, Universitas Gadjah Mada’s Nuclear Engineering Program composed a three-day pilot training program for local police and UGM\u27s security officers in 2018. The objective of the training was to improve their capabilities in dealing with nuclear security issues around where they work and serve. Training materials were designed to introduce nuclear technology and provide the basic skills of handling nuclear security matters. The training was divided into 12 sessions, based on the needs stated by the Special Region of Yogyakarta\u27s police chief. Lessons were delivered through traditional teaching, table-top exercises, exercises, and discussion. Fifteen-question pre-tests and post-tests were conducted to assess the officers’ knowledge of the training materials and the benefits of being trained. Based on the tests, we concluded that the participants’ understanding of nuclear security had improved. This increase in understanding was because the training materials fit their job needs, presented in various methods, and the participants’ awareness grew. It led to an increase in their awareness for securing the facilities utilizing radioactive sources in the Yogyakarta area. They said that the number of trainees in this event still does not meet the number of facilities that have to be secured. Therefore, the training should be carried out again and can be improved based on the participants\u27 feedback. Furthermore, this training could be expanded and applied to the whole country