38 research outputs found

    Islamic Currency Swap: Can Be the Best Way to Hedge Indonesia Hajj Fund?

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    The operational costs of Hajj in foreign currencies will always face the risk of changes in exchange rates. Hajj operational costs will continue to grow in line with the increasing number of pilgrims. But at present, the government (BPKH) does not have a currency hedging policy to reduce the risk of fluctuating currency values. Hajj operational costs are saved in rupiah, dollar and riyal currencies. As a result, deposits of pilgrims will continue to be overshadowed by the reduction in value due to the depreciation of the rupiah against the dollar and riyals. Hedging policy is a necessity in the management of Hajj funds. This study will use an Islamic currency swap simulation analysis. According to the MUI DSN No 96 in 2015, a swap is a contract that starts a spot transaction followed by a forward agreement by setting a forward exchange rate. Then it is settled by spot transactions using the agreed forward exchange rate. The results of the study show that the dollar and riyal in 2018 are in a state of high volatility, so hedging is needed to reduce cash outflows. Based on analysis, Islamic currency swap can be the best hedging to the operational costs of Hajj in USD is with tenors 30 days, 180 days, 360 days. while the operational costs of Hajj are in Saudi Arabia Riyal currency, efficient in overnight tenors, 30 days, 90 days and 180 days

    Mechanism of Cavitation-induced Atomization in Two-dimensional Nozzles

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    It has been pointed out that cavitation, i.e., super cavitation regime may occur in a nozzle of pressure atomizers, and may influence atomization of a liquid jet discharged from the 2D nozzle. Once we clarify the mechanism of atomization induced by the supercavitation, we will be able to develop new atomizers in which the atomization mechanism is utilized more efficiently. Hence, this study has been conducted to clarify the mechanism in the 2D nozzle. As a result, the following conclusions are obtained: (1) The frequency of the shedding and collapse of cavitation clouds in the supercavitation regime agrees with that of strong turbulence near the exit; (2) When the trace of a cavitation cloud comes out of the 2D nozzle, a ligament is formed at the liquid jet interface; (3) Strong turbulence is produced by the collapse of cavitation clouds near the exit of the 2D nozzle.and induces ligament formation, which, in turn, causes liquid jet atomization

    Analisis Petrofisika dan Penentuan Zona Potensi Hidrokarbon Lapangan "Kaprasida" Formasi Baturaja Cekungan Sumatera Selatan

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    --Analisis petrofisika pada sumur MI-1, MI-2, MI-3, dan MI-6dilakukan untuk evaluasi parameter petrofisika pada Formasi Baturaja. Identifikasi porositas, kandungan serpih, saturasi air dan permeabilitas dilakukan pada empat sumur. Estimasi kandungan serpih dilakukan dengan menggunakan log Gamma ray, estimasi porositas efektif dilakukan dengan menggunakan gabungan log densitas dan log neutron, Saturasi air dihitung dengan menggunakan persamaan Indonesia, dan permeabilitas dihitung dengan menggunakan persamaan Timur. Setelah parameter petrofisika didapat, pembungkalan (lumping) dilakukan untuk mengetahui ketebalan reservoir bersih dan ditentukan wilayah yang memiliki potensi keterdapatan hidrokarbon. Melalui analisis petrofisika dan pembungkalan didapatkan bahwa ketebalan reservoir bersih (net reservoir thickness) pada sumur MI-1 adalah sebesar 18,44 meter, sumur MI-2 sebesar 9,6 meter, sumur MI-3 sebesar 12,192 meter, dan sumur MI-6 sebesar 7,35 meter

    Pengaruh Kualitas Pelayanan Dan Harga Terhadap Loyalitas Pelanggan Melalui Kepuasan Pelanggan Sebagai Variabel Intervening

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    The research was motivated by of the many various alternative options for transportation services, especially land transportation. However, bus still be excellent for most of Indonesian people as a driving option.The purpose of this research is to determine the influence of service quality and price to customer loyalty, through customer satisfaction of PO. Nusantara\u27s customer. The population is all passengers direction Solo-Jakarta of PO. Nusantara. The sampling technique used was purposive sampling.the analysis used in this research is the path analysis using with SPSS Program 18.0, which previously tested the validity and reliability, coefisien Corelation,coefisien determination, simple linear regression and multiple linear regression.The results showed that the quality of service and price partially or simultaneously affect customer satisfaction and loyalty. Variable price gives greater influence on customer satisfaction and loyalty of the variable quality of service.Suggestions can be submitted is that the PO. Nusantara can improve the quality of services provided, especially regarding punctuality and time left to place the goal. While in pricing, in addition to the cost element, the company also must pay attention to the price set by competitors

    Pengaruh Pengenceran Dan Pengadukan Limbah Industri Ikan Nila Terhadap Peningkatan Produksi Biogas Dengan Menggunakan Rumen Sapi Sebagai Starter

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    Tilapia fish industry solid waste is resulting from the process of weeding, washing, and preparation. Tilapia fish industry solid waste has a high content of organic material. This would give to environmental issues when waste disposed into the environment. Therefore, an alternative processing by converting solid waste into biogas from Tilapia fish industry solid waste with anaerobic process. This research aims to enhancement of biogas production from Tilapia fish industry solid waste by using a rumen as a starter. The treatment was by dilution and stirring intencity in a samples with crushed and without crushed. This research is an experimental-laboratoris, where research is done in a scale laboratory. Methods used to research is a batch reactor using in anaërobic fermentation process. The results of this research show that Fish tilapia industry solid waste can generate biogas after rumen fluid with anaerobic processes continuously until 20 days. On the variable of the total volume production results in dilution of wastewater occur at the highest addition of water 150 ml with the treatment without chrushed i.e. 816 ml. On the variable total production volume result of stirring biogas high occur in stirring 3 x 150 ml with the dilution of the treatment without chrushed i.e. 1057 ml. On these variables was determine the influence measurement of chemical oxygen demand (COD) allowance against the production of biogas produced. The efficiency removal of COD occur at the highest stage without stirring sample A 100 ml a dilution that is 91%. The whole pH measurements on a variable decrease from the initial pH values 7 to pH 5

    Wettability Alteration Induced by Surface Roughening During Low Salinity Waterflooding

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    Wettability alteration during low salinity waterflooding (LSW) is expected to be one of the prominent reasons for enhanced oil recovery. However, the underlying mechanisms of improved oil recovery in sandstone during LSW are not entirely clear. Thus, a series of experiments was carried out to investigate the underlying mechanisms that drive the wettability alteration. FTIR spectroscopy was combined with thermogravimetric analysis to quantify the amount of adsorbed hydrocarbon components in sandstone with various clay contents. Afterward, the time-dependent contact angle in fabricated sandstone substrate (RMS roughness 9.911.31) was observed with various clay and brine contents to monitor the wettability alteration during LSW. The existence of divalent ions (Ca2+ and Mg2+) was found to stabilize the sandstone and prevent it from swelling. Surprisingly, with the presence of divalent ions, the rate of contact angle change was insignificant (, even though a reduction of divalent ions occurred and the rate of contact angle change with the sole presence of NaCl was notably altered (. Furthermore, the presence of higher clay content showed an increased contact angle alteration. We propose that these phenomena are partially driven by macroscopic phenomena of clay swelling, which leads to surface roughening and enhances the water-wetness

    Rancang Bangun Mesin Press Hidrolik Pembuat Bentuk Dasar Helm Ukir Khas Kotagede

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    ASEAN Economic Community is a regional economic integration to envision ASEAN as a single market production base. AEC can increase Indonesia's export and introduce our culture, but it can ruin Indonesia's economy if UKM doesn't ready to face it. To help this problem, people need to enhance UKM's prospects by increasing the USAge of technology. This time, our partner is carved helmet UKM from Kotagede which represent creativity, art, and high quality aesthetic of Indonesia. Sadly, there is a problem happening to our partner. It is on the lenght of time and size of power needed to produce a plain helmet as the material for carved helmet since it's still produced traditionally. Due to that problem, we offer a semi automatic process machine which called I-PAPS “INOVASI PROSES AUTOMASI PRODUKSI DENGAN PRESS SYSTEM” As the Solution for Carved Helmet UKM from Indonesia Lead to ASEAN Economic Community 2015. This Press Machine will shape the plate of aluminium as the basic material to a plain helmet. This press machine works based on hidraulic system and accretion of calor. This hidraulic system works when the handle ismoved up and downto give more pressure so the shape of helmet can be formed to the basic material. With the same length of time with making a plain helmet manually, I-PAPS is able to increase productivity and produce seven plain helmet. Furthermore, we hope this machine can solve our partner's problem and help our partner to thrive, and also our long-term goal is to increase our partner's opportunity to compete in International market, especially to face AEC 2015

    Effects of hospital facilities on patient outcomes after cancer surgery: an international, prospective, observational study

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    Background Early death after cancer surgery is higher in low-income and middle-income countries (LMICs) compared with in high-income countries, yet the impact of facility characteristics on early postoperative outcomes is unknown. The aim of this study was to examine the association between hospital infrastructure, resource availability, and processes on early outcomes after cancer surgery worldwide.Methods A multimethods analysis was performed as part of the GlobalSurg 3 study-a multicentre, international, prospective cohort study of patients who had surgery for breast, colorectal, or gastric cancer. The primary outcomes were 30-day mortality and 30-day major complication rates. Potentially beneficial hospital facilities were identified by variable selection to select those associated with 30-day mortality. Adjusted outcomes were determined using generalised estimating equations to account for patient characteristics and country-income group, with population stratification by hospital.Findings Between April 1, 2018, and April 23, 2019, facility-level data were collected for 9685 patients across 238 hospitals in 66 countries (91 hospitals in 20 high-income countries; 57 hospitals in 19 upper-middle-income countries; and 90 hospitals in 27 low-income to lower-middle-income countries). The availability of five hospital facilities was inversely associated with mortality: ultrasound, CT scanner, critical care unit, opioid analgesia, and oncologist. After adjustment for case-mix and country income group, hospitals with three or fewer of these facilities (62 hospitals, 1294 patients) had higher mortality compared with those with four or five (adjusted odds ratio [OR] 3.85 [95% CI 2.58-5.75]; p<0.0001), with excess mortality predominantly explained by a limited capacity to rescue following the development of major complications (63.0% vs 82.7%; OR 0.35 [0.23-0.53]; p<0.0001). Across LMICs, improvements in hospital facilities would prevent one to three deaths for every 100 patients undergoing surgery for cancer.Interpretation Hospitals with higher levels of infrastructure and resources have better outcomes after cancer surgery, independent of country income. Without urgent strengthening of hospital infrastructure and resources, the reductions in cancer-associated mortality associated with improved access will not be realised
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