On the Development of a Vibration Energy Harvesting Mechanism and the Influence of the Number of Wire Turns

This article deals with a research activity to design and to build a vibration energy harvesting (VEH) mechanism based on an electromagnetic method, where the energy source is from translational-harmonic vibration. In the developed VEH mechanism, a magnetic mass moves linearly back and forth within an electrical coil made from conductive-wire windings. In accordance to oscillating mass motion of a particular amplitude and frequency, the voltage which can be harvested is then measured and analyzed. The choice of an electromagnetic method stemmed from the availability of materials to construct the VEH mechanism. In the VEH mechanism, a mass size, a wire diameter and material, a coil length, and a vibration amplitude and frequency were considered constant, while the number of wire turns was varied. The constructed VEH was tested for 1,000, 1,500, 2,000, 2,500, and 3,000wire turns. The voltage density being harvested was recorded as 0.2820, 0.3715, 0.5695, 0.7343 and 0.9300 volt/cm3, respectively

Analisis Integrasi Pasar Beras di Provinsi Bali

Analysis of Rice Market Integration in The Province of BaliThe creation of market integration in Indonesia will guarantee production stabilityand the national rice consumption. One of the criteria for integration of the marketcan be seen from the integration level among the rice markets. This study aimed tolook at the degree of integration of rice markets in Bali Province. The data used wasthe real price of rice in the local market as well as data from BPS from 2011 to 2015.To the market integration, it was measured based on IMC (Index of MarketConnection). The results showed that Bali rice market integration integrated in theshort terms with other provinces except with Central Java, South Sumatra, andLampung. In the long terms Bali integrated with other provinces, and best integratedwith West Java, Central Java, Yogyakarta, East Java, and NTB, with their respectiveelasticity transmissions of 0.75; 0.88; 0.82; and 0.79. The role of government isexpected to build good information network, so farmers as producers can have betterbaraining position in determining the prices at the producer level

Kebijakan Pemerintah dalam Pembiayaan USAha Pembibitan Ternak Sapi

Penelitian ini bertujuan mengetahui efektivitas kebijakan pemerintah terhadap pembiayaan pembibitan sapi, melihat faktor-faktor yang memengaruhi penyaluran skim kredit, dan merumuskan saran dan rekomendasi untuk meningkatkan efektivitas penyaluran dan penyerapan skim kredit kredit USAha pembibitan sapi/KUPS. Penelitian ini menggunakan metode evaluasi deskriptif untuk mendapatkan gambaran menyeluruh dari pelaksanaan program kredit. Data yang diperoleh dianalisis dengan menggunakan analisis gap untuk mengevaluasi realisasi penyaluran dan target yang telah ditetapkan, analisis kesisteman untuk mengetahui efektivitas program, analisis persepsi responden untuk memperoleh umpan Balik masyarakat dan analisis regulatory impact assessment untuk menentukan saran dan rekomendasi untuk program kredit tersebut. Hasil menunjukkan bahwa efektivitas program kredit lebih rendah daripada tujuan pencapaiannya. Tanggapan masyarakat terhadap kebijakan ini sangat besar tetapi terdapat banyak kendala yang dihadapi oleh pelaku USAha pembibitan. Faktor-faktor yang memengaruhi adalah perbankan, pemerintah, dan pelaku USAha pembibitan itu sendiri. Rekomendasi terhadap program skim kredit ini adalah (1) meningkatkan dukungan dari bank, (2) pengurangan program pemerintah yang tumpang tindih, (3) meningkatkan kemampuan petani dalam mengakses bank, dan (4) meningkatkan penyaluran kredit dengan menggunakan program pola dua subsidi

Prosedur Uji Kepatuhan terhadap Prinsip Bersaing Islami pada Industri Perbankan Syariah: sebuah Proposal Berdasarkan Teori dan Kajian Empiris Organisasi Industri

An industry in Islamic Economics is required to compete perfectly regardless of its market structure. How to ensure this rule being implemented in reality, however, has been neglected either in literatures or by industry supervisors. This paper is aimed at proposing a systematic procedure to test the industry compliance toward islamic competition rules. The advance of theory and empirics of New Empirical Industrial Organization is used to formulate the procedure. There are two conditions to satisfy for an industry to have an islamic competition. The first and necessary condition is rejecting the Traditional Hypothesis which is based on collutive bahaviour of dominant banks. The second and sufficient condition is, the perfect competition is driven more by the intention of syariah compliance rather than due to the pressure of contestability

ANALISIS PENGUJIAN TRANSFORMATOR DISTRIBUSI DAYA 160KVA – TEGANGAN 20KV/400V – 4,6A/231A

Transformator Distribusi merupakan peralatan vital dalam system distribusi tenaga listrik, Transformator Distribusi yang terpasang pada saluran tegangan menengah sering mengalami gangguan yang dapat mengakibatkan kerusakan pada transformator dan terputusnya penyaluran tenaga listrik ke pemakai listrik. Gangguan sering terjadi adalah gangguan akibat beban lebih, akibat sambaran petir dan ganguan yang penyebabnya belum diketahui. Kondisi tersebut dapat diatasi dengan melakukan pengujian transformatorSebelum dikirim kekonsumen, agar dapat diketahui efisiensi dan kemampuan transformator terhadap beban maupun terhadap kemungkinan gangguan yang akan dialaminya.Dengan mengaplikasikan metoda Standar SPLN dalam pengujian transformator sehingga dapat diketahui kualitas dari transformator. Dari analisis diperoleh hasil bahwa transformator yang telah diuji memiliki hasil perhitungan untuk prosentase impedansi 6,19%,pengukuran rugi tembaga 2866,7W,efficiency untuk cos Ф = 1,0 diperoleh 98,15% dan cos Ф= 0,8 diperoleh 98,09% ternyata tidak memenuhi Standart : SPLN 50 : 1997.Kata kunci :Transformator Distribusi, saluran tegangan menengah , SPLN 50 : 1997, kemampuan transformator terhadap beban. Efisiensi, rugi tembaga

Implementasi Structural Equation Model (Sem) dalam Menganalisis Kinerja Kemitraan antara Penangkar Benih dengan Petani Mitra di Provinsi Jawa Barat

With the rapid development of science, the relationship between variables are very complex and complicated which often experienced problems in their analysis. Structural Equation Model (SEM) is a statistical analysis method that is able to estimate the multiple relationship among variables, and patterns of relationship among the indicator of variables and measurement of error simultaneously. This paper aims to elaborate the implementation of the SEM to analyze the factors that affect the level of partnership in the agribusiness supply chain of potatoe seed. Sources of data were the results of a survey of 175 seed growers and farmers partners in Garut district of West Java Province, in 2013 . The model was designed to follow the stages of SEM and further data were processed by Lisrel 8.72 software. The results of SEM implementation showed its ability to: (i) identify the factors that affect the level of partnership by measuring the validity and reliability of the manifest variables (indicators) used as a measuring instrument, (ii) to test the hypotheses that was built in the model, (iii) be adapted to rearrange the appropriate partnership model in the future

An evaluation of three DoE-guided meta-heuristic-based solution methods for a three-echelon sustainable distribution network

This article evaluates the efficiency of three meta-heuristic optimiser (viz. MOGA-II, MOPSO and NSGA-II)-based solution methods for designing a sustainable three-echelon distribution network. The distribution network employs a bi-objective location-routing model. Due to the mathematically NP-hard nature of the model a multi-disciplinary optimisation commercial platform, modeFRONTIER®, is adopted to utilise the solution methods. The proposed Design of Experiment (DoE)-guided solution methods are of two phased that solve the NP-hard model to attain minimal total costs and total CO2 emission from transportation. Convergence of the optimisers are tested and compared. Ranking of the realistic results are examined using Pareto frontiers and the Technique for Order Preference by Similarity to Ideal Solution approach, followed by determination of the optimal transportation routes. A case of an Irish dairy processing industry’s three-echelon logistics network is considered to validate the solution methods. The results obtained through the proposed methods provide information on open/closed distribution centres (DCs), vehicle routing patterns connecting plants to DCs, open DCs to retailers and retailers to retailers, and number of trucks required in each route to transport the products. It is found that the DoE-guided NSGA-II optimiser based solution is more efficient when compared with the DoE-guided MOGA-II and MOPSO optimiser based solution methods in solving the bi-objective NP-hard three-echelon sustainable model. This efficient solution method enable managers to structure the physical distribution network on the demand side of a logistics network, minimising total cost and total CO2 emission from transportation while satisfying all operational constraints

On the Development of a Vibration Energy Harvesting Mechanism and the Influence of the Number of Wire Turns

This article deals with a research activity to design and to build a vibration energy harvesting (VEH) mechanism based on an electromagnetic method, where the energy source is from translational-harmonic vibration. In the developed VEH mechanism, a magnetic mass moves linearly back and forth within an electrical coil made from conductive-wire windings. In accordance to oscillating mass motion of a particular amplitude and frequency, the voltage which can be harvested is then measured and analyzed. The choice of an electromagnetic method stemmed from the availability of materials to construct the VEH mechanism. In the VEH mechanism, a mass size, a wire diameter and material, a coil length, and a vibration amplitude and frequency were considered constant, while the number of wire turns was varied. The constructed VEH was tested for 1,000, 1,500, 2,000, 2,500, and 3,000wire turns. The voltage density being harvested was recorded as 0.2820, 0.3715, 0.5695, 0.7343 and 0.9300 volt/cm3, respectively