Sultan Ageng Tirtayasa University is the only state university in the province of Banten, Indonesia. The main campus is in Serang and the faculty of engineering is at Cilegon. Sultan Ageng Tirtayasa University was established by the Tirtayasa Foundation.Untirta has six faculties: Law, Teacher Training and Education , Engineering, Agriculture, Economics, and Social and Political Science.Sultan Ageng Tirtayasa University is the youngest in Indonesia, which is located in the province of Banten. Wikipedia.
Aliudin,Sultan Ageng Tirtayasa University
International Journal of Applied Engineering Research | Year: 2016
This research aim to know: (1) how much the influence the three the factors of productions to yield product, (2) efficiency of using raw material, fuel, and labor. A Survey was applied in this study. The population consisted of melinjo chips producers in Menes. A Sample was sorted out trough stratified random sampling. The sample consisted of 32 producers. With respect to its raw material used, 11 producers more similar to 15 kg and the others, 21 producers produced less than 15 kg. Cobb-Douglas production function and efficiency analysis were applied. The results of this study indicated that Simultaneously melinjo chips production is influenced by melinjo seed (raw material), fuel and labor. Partially melinjo seed (raw material) and fuel significant effect on the production of melinjo chips, and significant experiences tapped to melinjo chips production, While labor did not significantly affect the production of melinjo chips. © 2016, Research India Publications.
Wibisono G.,University of Indonesia |
Firmansyah T.,Sultan Ageng Tirtayasa University
Asia-Pacific Microwave Conference Proceedings, APMC | Year: 2012
In this paper, multiband low noise amplifier (LNA) with multi-section impedance transformer (MIT) as impedance matching is designed, fabricated and evaluated. MIT is used as input and output impedance matching because MIT has higher stability, large Q factor, and low noise than lumped component. MIT is easy to fabricate and measure. The aim of the research is to design multiband LNA with MIT at center frequencies located at 0.95 GHz for GSM, 1.85 GHz for WCDMA and 2.65 GHz for LTE. Designed and evaluated of the proposed multiband LNA with MIT is done by using advanced desain system (ADS). It shown from the simulated results that performances of the proposed LNA at center frequency of 0.950 GHz has return loss, S11 = -23.541 dB, insertion loss, S 21 = 18.911 dB, noise figure, NF = 1.475 dB, VSWR = 1.143, and FoM = 8.38, respectively. At center frequency of 1.85 GHz, the proposed LNA has S 11 = -23.771 dB, S21 = 12.858 dB, NF = 1.988 dB, VSWR = 1.139, and FoM = 2.616. At center frequency 2.65 GHz, the proposed LNA has S11 = -23.521 dB, S21 = 10.180 dB, NF = 2.776 dB, VSWR = 1.143, and FoM = 1.152. The center frequencies of fabricated proposed multiband LNA with MIT are shifted in average to 5-10 MHz lead to simulation results, and the performances of the fabricated of the proposed LNA with MIT are degraded about 7-10% by using Monte-Carlo Yield Analysis. © 2012 IEEE.
Alimuddin,Sultan Ageng Tirtayasa University
2010 International Conference on Distributed Frameworks for Multimedia Applications, DFmA 2010 | Year: 2010
Traffic lights are a form of intersection traffic controlling operations are the most commonly applied, especially in urban areas. Traffic lights at the intersection plays an important role in determining the smooth distribution of vehicles on the road, so traffic light system of regulation that would better facilitate traffic flow on a set path. Goal of Settings Logic Analysis of Traffic Lights is based on fuzzy logic: First, Knowing membership functions of input and output of vehicles coming vehicles and output of vehicles at the intersection of Mount Bawakaraeng and duration of green light output in the fuzzy set. Fourth, Knowing the duration of effective green light by using fuzzy logic at the intersection of Mount Bawakaraeng. In this paper there are three membership functions, namely: input membership functions of the arrival of vehicles, vehicle output membership function and membership function duration of green light output. Each membership function is formed by classifying the input and output fuzzy sets by using the mamdani triangle curve representation. To input the number of vehicles coming d. To iutput the number of vehicle V. Membership function of output duration of green lights l. Results Discussion that the duration of effective green light at the intersection of Mount Bawakaraeng Makassar when re-employment, namely: For the arrival of the vehicle 17 and the output of the vehicle 16 so that the effective duration of green lights 50 seconds, for the arrival of vehicles 17 vehicles 18 and outputs the duration of green lights effective 51 seconds, for the arrival of 19 vehicles and 17 vehicles output then the effective duration of green lights 51 seconds, for the arrival of the vehicle 20 and the output of the vehicle 18 so that the effective duration of green lights 54 seconds, for the arrival of 21 vehicles and 19 vehicles, the duration of the output green light Effective 57 seconds. Conclusion First, Know the membership function of input and output number of vehicles coming vehicle at the intersection of Mount Bawakaraeng by Veterans in Makassar and the output duration. Burning green light, so the third relation the input variable arrival of vehicles, vehicle output and the output of green light duration is closely related to each other, Second The results obtained indicate the duration of effective green light at the intersection of Mount Bawakaraeng with Veterans at the road when people come home from work. © 2010 University Sains Malaysia.
Fatmah,University of Indonesia |
Erwin,Sultan Ageng Tirtayasa University
International Journal of GEOMATE | Year: 2016
Elderly with less nutritional status would be susceptible to get infectious disease, immune deficiencies, reduced productivity, high risk of various complications of disease, and can even cause death. Height as the one indicator of nutritional status assessment in elderly is difficult to measured due to such conditions as osteoporosis, scoliosis, kyphosis, etc. Arm span, knee height and sitting height can be used to predict the height. However, some anthropometric measurements with different positions are not effective because of discomfort. Three anthropometric measurements in one tool like a chair can overcome the problems. The study aimed to develop the anthropometric chair (Body Mass Index/BMI Meter) for elder's nutritional status assessment with an easy, practical measurement. The study design was cross sectional using survey method toward 300 healthy older people. Upper leg length, lower leg length, pelvic width, shoulder width, elbow height, shoulder height and patellar height were measured to design the chair. The study revealed that the male elderly had higher data anthropometric than female. The mean of anthropometric data decreased with age. The validity of anthropometric chair from the sensitivity (85-100%), specificity (70-80%), Positive Predictive Value (80-90%) and Negative Predictive Value (80-100%). The anthropometric chair can be used for assessing elders nutritional status. © 2016, Int. J. of GEOMATE.
Effendy M.,State University of Surabaya |
Wardhono E.Y.,Sultan Ageng Tirtayasa University
MATEC Web of Conferences | Year: 2016
The catalytic oxidation of methane for abating the emission vented from coal mine or natural gas transportation has been known as most reliable method. A reverse flow reactor operation has been widely used to oxidize this methane emission due to its capability for autothermal operation and heat production. The design of the reverse flow reactor requires a proper kinetic rate expression, which should be developed based on the operating condition. The kinetic rate obtained in the steady state condition cannot be applied for designing the reactor operated under unsteady state condition. Therefore, new approach to develop the dynamic kinetic rate expression becomes indispensable, particularly for periodic operation such as reverse flow reactor. This paper presents a novel method to develop the kinetic rate expression applied for unsteady state operation. The model reaction of the catalytic methane oxidation over Pt/-Al2O3 catalyst was used with kinetic parameter determined from laboratory experiments. The reactor used was a fixed bed, once-through operation, with a composition modulation in the feed gas. The switching time was set at 3 min by varying the feed concentration, feed flow rate, and reaction temperature. The concentrations of methane in the feed and product were measured and analysed using gas chromatography. The steady state condition for obtaining the kinetic rate expression was taken as a base case and as a way to judge its appropriateness to be applied for dynamic system. A Langmuir-Hinshelwood reaction rate model was developed. The time period during one cycle was divided into some segments, depending on the ratio of CH4/O2. The experimental result shows that there were kinetic regimes occur during one cycle: kinetic regime controlled by intrinsic surface reaction and kinetic regime controlled by external diffusion. The kinetic rate obtained in the steady state operation was not appropriate when applied for unsteady state operation. On the other hand, the kinetic rate expression obtained in the unsteady state operation fitted quite well. It was proven that in one cycle period the kinetic rate would always shift according to the ratio of CH4/O2. © Owned by the authors, published by EDP Sciences, 2016.