Hasil Pencarian  ::  Simpan CSV :: Kembali

"East Java Province inIndonesia is the centre of the eastern Indonesia region and it has a fairlyhigh economic significance, which has contributed 14.85% to the national GrossDomestic Product (GDP). The role of Large and Medium Scale ManufacturingIndustry (LMSMI) clusters in this province is very important and strategic asone of the main drivers for economic progress and it becomes a part of theefforts to improve the society's life. Therefore, it is necessary to evaluatethe performance of LMSMI clusters continuously. The purpose of this study is toinvestigate the productivity changes of LMSMI clusters in East Java Province,Indonesia, so that they will be able to survive, grow and compete in facingglobal competition. The method used in this study is the method of DEA-basedMalmquist Productivity Index. The result of this study indicates that 50% ofthe LMSMI clusters in East Java Province are in the category of improvedproductivity, while the remaining clusters are in the category of decliningproductivity."

"East Java Province in Indonesia is the centre of the eastern Indonesia region and it has a fairly high economic significance, which has contributed 14.85% to the national Gross Domestic Product (GDP). The role of Large and Medium Scale Manufacturing Industry (LMSMI) clusters in this province is very important and strategic as one of the main drivers for economic progress and it becomes a part of the efforts to improve the society's life. Therefore, it is necessary to evaluate the performance of LMSMI clusters continuously. The purpose of this study is to investigate the productivity changes of LMSMI clusters in East Java Province, Indonesia, so that they will be able to survive, grow and compete in facing global competition. The method used in this study is the method of DEA-based Malmquist Productivity Index. The result of this study indicates that 50% of the LMSMI clusters in East Java Province are in the category of improved productivity, while the remaining clusters are in the category of declining productivity."

"Literature studiesindicate that information technology (IT) clusters encourage innovation andincrease firm-level productivity by providing external economies and facilitatingjoint action for its members. The purpose of this study is to identify theexternal economy and joint action factors that affect firm innovation andproductivity in the IT cluster. A research model was developed based on earliermodels of joint action and external economies. The model consists of three externaleconomy related factors, i.e., access to skills, finance, and infrastructure, aswell as three joint action related factors, i.e., vertical, horizontal, andresearch and development (R&D) cooperation as the independent variables,firm innovation as the intervening variable, the firm?s absorptive capacity asthe moderating variable, and firm productivity as the dependent variable. Datacollection was conducted through a survey with respondents from 32 IT firmslocated in three clusters in Bandung and one cluster in Cimahi (West Java ?Indonesia). The partial least square (PLS) approach was used for hypothesestesting. The results indicate that horizontal cooperation, access toinfrastructure, and access to skill have a positive impact on productivity,while horizontal cooperation and R&D cooperation have a positive impact oninnovation. Finally, firm innovation is proven to positively influence firmproductivity."

"AbstrakPerbedaan pola penggunaan internet berhubungan erat dengan distribusi kekuasaan yang tidak setara dalam keluarga: antara suami dan istri, antara anak perempuan dan laki-laki. Teknologi internet yang mengalami domestifikasi ini berintegrasi dengan pembagian peran gender dalam keluarga dan merembes dalam praktik sosialisasi mengenai perilaku yang berkaitan dengan penggunaan komputer dan internet. Pola penggunaan komputer yang berbeda antara ayah dan ibu, melemahkan ketertarikan dan minat anak perempuan terhadap komputer dan internet (technophobia). Akan tetapi, dalam kajian Blogger Indonesia dengan menggunakan IES, dalam tulisan ini, menunjukkan bahwa perempuan dan laki-laki memiliki sikap yang sama terhadap internet apabila perempuan diberi akses dan waktu yang sama seperti laki-laki"

"Forest destruction in Indonesia has become a very serious problem and global concern. Eco-labels aim to combat illegal logging, illegal trading, and forest conversion. Eco-labeling in the furniture industry is slower in Indonesia than in competing countries such as China and Vietnam, where China has reached more than 1000 Chain of Custody (CoC) certification industrial units and Vietnam 238 units, while Indonesia has achieved only 78 units. But eco-labeling is perceived as a pressure on the international trade of the furniture industry. This study examines how the furniture industry in Central Java and Yogyakarta understands eco-labeling and what efforts the industry is making. Eco-labeling has a positive impact on the industrial environment and sustainable forestry, and it increases credibility/corporate image, market share, and profit. But not all buyers demand eco-labeling, so some companies deal with eco-labeling either by applying for certification or by looking for buyers that do not require the eco-label. Buyers who do not require the eco-label result in companies having less motivation to seek CoC certification. Other views about eco-labeling in the industry are also counterproductive, producing further obstacles to eco-label certification. Eco-labeling is often understood as unfair competition from developed countries, implemented as a barrier to entry into trade, and as inconsistent with The General Agreement on Tariffs and Trade (GATT)/The World Trade Organization (WTO). Eco-labeling is often considered a new form of colonialism rather than an instrument of environmental management."

"A multi modelpredictive control and proportional-integral controller switching (MMPCPIS)approach is proposed to control a nonlinear distillation column. The study wasimplemented on a multivariable nonlinear distillation column (Column A). Thesetpoint tracking and disturbance rejection performances of the proposedMMPCPIS were evaluated and compared to a proportional-integral(PI) controller and the hybrid controller (HC). MMPCPIS developed to overcome theHC?s limitation when dealing with very large disturbance changes (50%). MMPCPIS provided improvements by 27% and 31%of the ISE (integral of square error) for feed flow rate andfeed composition disturbance changes, respectively, comparedwith the PI controller, and 24% and 54% of the ISE for feed flow rate and feedcomposition disturbancechange, respectively, compared with HC."

"Inhibition is one of themechanisms used for mitigating the metallic corrosion, particularly in an acid environment. The present work aims toinvestigate theinhibiting effect of N-benzyl-N/-phenyl thiourea (BPTU) on thecorrosion of low carbon steel in a 0.1 M hydrochloric acid (HCl) solution using a Tafelextrapolation and linear polarization techniques. The study reveals that BPTUacts as an excellent anodic inhibitor for low carbon steel in a HClsolution. The protective efficiency of the compound was found to be more than97% even at higher temperatures. The study demonstrated that BPTU gets adsorbedon the steel surface, following Temkin?s adsorption isotherm and the inhibitionis controlled by a chemisorptionmechanism. The investigation shows that the results obtained from the Tafelextrapolation and linear polarization techniques for the corrosion of mildsteel in HCl medium were in good agreement. The influence of temperatures andconcentrations of BPTU on the corrosion of low carbon steel are alsoexamined in the present work."

"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 relative significance ofthe parallel middle body and stern form in the wake formation of single-screwlarge ships and their contribution to the ship?s viscous resistance are studied by using computational fluid dynamics (CFD). A10450-DWT tanker is considered by varying the ratio of theparallel-middle-body?s length to the ship?s length (Lmb/L) and by varying the shape of the stern form from aV-like to a U-like underwater stern transom section. In all the calculations,the principal dimension and the displacement of the ships are kept constant. Alarger value for the parallel-middle-body relative length (Lmb/L) of ships with the same stern form results in alarger drag coefficient but does not affect the nominal wake fractionsignificantly. A change in the shape of the underwater stern form,from a V-like to a U-like section, results in a much larger drag coefficientascribed to the much larger wake fraction. The stern form dominantly affectsthe nominal wake fraction and the ship?s viscous resistance compared to theparallel-middle-body relative length."

"A mechanical assembly consists of several components to perform an intended function. At the design stage, the intended function must be converted into critical product dimensions. After determining the dimensions, a designer must determine the assembly tolerance and allocate this tolerance to the tolerances of the corresponding components. After determining the optimal tolerances, process selection must be conducted along with production allocation to the selected process. There are three aspects in commercial competition that must be considered by a manufacturing company: cost, quality, and delivery. The aim of this research is to develop an optimization model for process selection for a make to order company to minimize manufacturing cost, quality loss, and lateness cost. The model attempts to determine optimal tolerance and production allocation, which takes into consideration the production capacity and process sequence. Hence, the model attempts to include not only the product design decision, but also to solve the process selection and allocation problems. A numerical example is provided to show the implementation of the model."