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"This paper describes thecase study of Semanggi intersection in Jakarta, a dynamic model of emissionreduction in the land transportation sector. The urban transportation system isa complex system with multiple variables, feedback loops, and is influenced bysocial, economic and environmental factors. The proposed model consists of twosubmodels: Vehicle Fleet and Emission Calculation. The model runs inPowersim Studio software using data from the Indonesia Japan EconomicPartnership Agreement, and the TrafficManagement Centre of the Indonesian National Police. The test was conducted by developing two scenarios:Business As Usual and Intention. The estimated results to beobtained using the first scenario in 2021 should be 1,113,398 units, while thesecond scenario is estimated to produce 850,733 units. We hypothesize that theIntentional Approach will have a more significant impact than the TechnicalApproach, which requires more investment. The Intentional Approach is designed to improve the intention ofprivate car users to switch to public transportation. The Technical Approach to the emission measurement of everyvehicle in a certain area is the data of vehicle emission which are usuallytaken to determine the current condition. This research will no doubthave a positive impact on emission reduction in Jakarta."

"This paper describes the case study of Semanggi intersection in Jakarta, a dynamic model of emission reduction in the land transportation sector. The urban transportation system is a complex system with multiple variables, feedback loops, and is influenced by social, economic and environmental factors. The proposed model consists of two submodels: Vehicle Fleet and Emission Calculation. The model runs in Powersim Studio software using data from the Indonesia Japan Economic Partnership Agreement, and the Traffic Management Centre of the Indonesian National Police. The test was conducted by developing two scenarios: Business As Usual and Intention. The estimated results to be obtained using the first scenario in 2021 should be 1,113,398 units, while the second scenario is estimated to produce 850,733 units. We hypothesize that the Intentional Approach will have a more significant impact than the Technical Approach, which requires more investment. The Intentional Approach is designed to improve the intention of private car users to switch to public transportation. The Technical Approach to the emission measurement of every vehicle in a certain area is the data of vehicle emission which are usually taken to determine the current condition. This research will no doubt have a positive impact on emission reduction in Jakarta."

"End-of-life Vehicle(ELV) recovery is a promising strategy to minimize the environmental impact ofautomotives on environmental sustainability. This study aims to assess thecommunity?s knowledge from a socio-technical perspective on ELV. A survey wasconducted in Japan and Malaysia to assess public perception on ELV recovery.The results showed that the communities in both countries have basic knowledgeand a reasonably good level of awareness on environmental issues and recoverystrategies such as recycling. However, there is a high level of uncertainty onthe concept of ELV reuse and remanufacturing, as more than 50% of respondentswere unsure of their willingness to participate in ELV initiatives. Therespondents agreed that the industry and government should take the necessarysteps to support the reuse strategy. The paper concludes with suggestions froma socio-technical perspective, which aim to ensure an effective implementationof ELV recovery through reuse and remanufacturing."

"seiring dengan kebutuhan TNI AU akan alutsista yang semakin maju, perkembangan dunia UAV juga mengalami perkembangan yang cukup signifikan, kenutuhan yang terus meningkat tersebut akan membuat ketergantungan terhadap pihak asing jika tidak berusaha untuk mengembangkan teknologi bidang kedirgantaraan tersebut. sebenarnya dalam negeri kini sudah banyak pihak-pihak penghobi aeromodelling yang bisa mendesain struktur rangka sendiri. pada makalah ini desimpurnakan vortex blade element theory, sehingga dihasilkan propeller yang sesuai dengan kebutuhan."

"Recently, there was anincrease in demand of biomass pellets as an alternative energy source. However,it is necessary to reduce the size of granular materials during the pelleting process.The size reductionof eucalyptus bark occurs in the industrialprocessing of biomass pellets production, using a hammer milltogether with three sieve sizes of 3, 4, and 5 mm and the sieve speeds of 900, 1000, 1100, and 1200 rpm, respectively, which have beenexamined at a feed rate of 80 kg/h. The aims of this study were to determine theimportant parameters, namely rotational speed, to determine suitable sieve sizefor reducing the size of eucalyptus bark, and to analyze energy usage in thesize reduction process by using a hammer mill. The results have shown that using a 5 mm sieve size at 900 rpm sievespeed resulted in the best operating conditions in order to offer the highestcapacity and lowest specific energy consumption. Moreover, the average particle size of 0.15mm was an acceptable value. This study could be very beneficial in thedevelopment process to produce biomass pellets."

"As a result ofwaterflooding, inorganic salt precipitation occurs in the different parts of anoil production system, thereby leading to damage of production equipment.Different parameters affect the kinetics of salt precipitation. Scaleinhibitors are widely used to prevent inorganic salt formation. In this study,the effect of reservoir pressure, temperature, and mixing ratio of injection toformation water on calcium sulfate and barium sulfate precipitation wasinvestigated. For this purpose, two different formation waters and oneinjection water were used. In addition, the effect of temperature and mixingratio on inhibition performance was studied. Four different existing industrialscale inhibitors and one new scale inhibitor were used. The performance of thescale inhibitors was determined under static and dynamic conditions. Results ofthe study showed that calcium sulfate precipitation increased with an increasein temperature and a decrease in pressure. Barium sulfate precipitation wasfound to increase with a decrease in the temperature. The effect of pressure onbarium sulfate formation was negligible. The developed scale inhibitor showedthe highest performance for the prevention of calcium sulfate and bariumsulfate formation. A change in temperature from 60°C to 120°C reduced theinhibitor performance by 3%. In the cases of calcium sulfate and bariumsulfate, the minimum performance of the scale inhibitor was observed when themixing ratios of injection to formation waters were 60:40 and 50:50,respectively."

"The research aims to scale up a small-scale stirred batch reactor to a large-scale stirred batch reactor in order to degum crude palm oil for use as a raw material in biodiesel production. The scale-up is based on the similarity of fluid Reynolds numbers in the two differently sized reactors. To achieve this aim, computational fluid dynamic modeling and simulations of the two reactors were performed. A small-scale palm oil degumming process was carried out in a 250 cc autoclave reactor using a magnetic stirrer at 500 rpm. The simulation results of this small reactor yielded a fluid Reynolds number in the range of 5 to 3,482. The large-scale reactor proposed in this research is 1.25 m3 in volume and is equipped with two impellers: a pitched blade impeller and a Rushton turbine impeller. The pitched blade impeller is placed over the Rushton turbine impeller. They are rotated at 100 rpm. Under this setting and operation, the resulting fluid Reynolds number was in the range of 486 to 202,000. This result indicates that the large-scale reactor was able to reproduce the reaction performance obtained in the small-scale reactor."

"The main objective of this paper is to review and examine the effects of the selected collision parameter values on the characteristics of collision energy in several ship collision scenarios. The benchmarking particulars were taken from the ship-to-ship collision case on Sunda Strait in 2014, while the collision process was modeled with non-linear simulations using the finite element (FE) method to determine the predicted damage and internal energy in the collision process. In the first phase, the verified model for the numerical simulation was built based on the benchmarks and other previous findings by researchers. The study of parameters during the collision process was performed in a later stage. The location of the target point in the vertical axis and the effect of the collision angle were the primary main focuses. The characteristics of damage and energy tendencies will be presented. One remarkable findings was that the structure of the car deck showed a better resistance and was more difficult to destroy than the other proposed locations. The angle position between the two objects during the impact process significantly contributed to the damage pattern on the side hull. The final results also indicated that the cross-section of the target point?s location influenced the observed parameters."

"FinFET (Fin Field-EffectTransistor) technology has recently seen a major increase in adoptionfor use in integrated circuits because of its high immunity to short channeleffects and its further ability to scaledown. Previously, a major research contribution was made to reduce the leakage current in theconventional bulk devices. So many different alternatives like bulk isolation and oxide isolation are all having some pros andcons. Here in this paper, we present a novel pile gate FinFET structure toreduce the leakage current, as compared with Bulk FinFET without using any pstop implant orisolation oxide as in theSilicon-on-Insulator (SOI). The major advantage of this type ofstructure is that there is no need of high substrate doping, a 100% reduction in therandom dopant fluctuation (RDF) and an increase in the ION/IOFFvalue. It can be very useful to improve the drain-induced barrier lowering (DIBL) at smallertechnological nodes. All the work is supported by 3D TCAD simulations, using Cogenda TCAD."

"The growth and crystallization processes of the Cu2ZnSnS4 (CZTS) phase typically rely on high-temperature sulfurization, which involves a harmful chalcogen-containing atmosphere. Together with the use of high-toxicity solvents, these processes could hinder the widespread adoption of this technology in the mass production of CZTS semiconductors for solar cell application. Thus, we studied the formation of CZTS films from ethanol-based precursors without the sulfurization step, fully employing the non-toxic solvent and avoiding the environmentally harmful sulfur-containing atmosphere. The certain addition of 2-mercaptopropionic acid led to the formation of a clear and stable sulfur-containing precursor. The precursors were successfully deposited onto soda lime glass by employing spin coater. CZTS crystallinity in the identified XRD patterns was vanishingly small in the case of eliminating the sulfurization process. Moreover, the carbon concentration and grain size of the resulting films were controlled by changing the time period of drying treatment during film fabrication. A drying time of 120 minutes, which demonstrated a CZTS grain size of ± 1 µm with a direct optical energy gap around 1.4 eV, was confirmed as the ideal condition. These results may provide a useful route toward environment-friendly strategies for the production of a CZTS semiconductor that is compatible with the absorber application in thin-film solar cells."