bluuebunny/crossref_metadata_2025 huggingface dataset:
KOMPARASI KINERJA DAN KETAHANAN KREDIT ANTARA PERBANKAN KONVENSIONAL DAN PERBANKAN SYARIAH
Authors: Elisa Frisky , Busneti Ida
Published: November 2018

This research aims to know the factors affecting the performance and credit resilience at cinvensional and Islamic banks. In addition to comparing the performance and credit resilience of the convensional and Islamic banks. Using Pooled methods.  This research uses the return on asset (ROA) for performance bankings are measure non-performing loan (NPL) / non-performing finance (NPF) to credit resilience. Factor that are used to looking at banking performance, among others, the lain net interest margin (NIM), non-performing loan (NPL) atau non-performing finance (NPF), Loan to deposit ratio (LDR), dan BOPO. While credit resilience, fators that are used among others inflation, exchange rate, Loan to deposit ratio (LDR) dan capital adequacy ratio (CAR). This research uses a conventional five banks and five Islamic banks from 2010 quarter 01 – 2013 quarter 02. The data used in this study were obtained from quarterly report of the bank for 2010-2013. Badan Pusat Statistik and Bank Indonesia. Result of analysis of this study that the performance of conventional banks is influential NPL and BOPO while in credit resilience is inflation, in a ratio impact on Islamic banking performance as BOPO and influencing credit resilience is CAR
PENGARUH MAKRO EKONOMI TERHADAP INDEKS HARGA SAHAM EMPAT NEGARA DI ASIA TENGGARA PERIODE 2003-2013
Authors: Saragih Anesa Novtiani , Sirait Koramen H.
Published: November 2018

Investment in capital investment which is excessively done by companies or individuals in countries Southeast Asia. Investment which typically done is an investment in the capital market. By investing in these capital markets, it can raise particular country’s economic activity where share is one of the instruments of capital market. Many investors prefer this instrument in investing due to the attractive shares advantage. The movement of share prices changes every day, and observing the movements is essential by the investors. The information that can be observed by the investors in observing the movements of share prices is the joint share price index in a country. This research aims to analyze influence the macroeconomic variables towards share price index in some Southeast Asia countries, namely Indonesia, Malaysia, Philippines and Singapore from 2003 to 2013. This research employs panel data analysis to determine the variables which affect share prices in four Southeast Asian countries. The variables that affect the share price index are the interest rate, IHK, and GDP. Based on the panel data analysis, it is shown that the interest rate gives negative effect and significant towards the share price index of four countries in Southeast Asia, IHK gives negative effect and not significant towards the share price index of countries in Southeast Asia, and GDP gives positive effect and not significant towards the share price index of countries in Southeast Asia.
PENGARUH INVESTASI DAN TENAGA KERJA TERHADAP PDRB SEKTOR INDUSTRI DI PROVINSI JAWA BARAT
Authors: Silaen Mikha Lola Melyani , Esther Astrid Maria
Published: November 2018

This research aims to understand how the influence of the investment and labor against the economic growth of industrial sector in the Province of West Java. The analysis technique which use in this research is regretion of panel data analysis. The data which use is GDP (Gross Domestic Product) industry sector, investment industrial sector, and the number of labors in the industrial sector from 2009 to 2013. This data consists of time series data (2009-2013) and cross section data (25 cities / regencies in West Java Province). Based on the analysis of panel data, the variable of investment and variable of labor have positive and significant impact on economic growth in the industrial sector in the Province of West Java.
Manual Therapy Cures Death: I Think I Read That Somewhere
Authors: Cook Chad E. , Cleland Joshua A. , Mintken Paul E.
Published: November 2018

Predatory journals are compromising the scientific credibility of “published” research. Past concerns with predatory journals have included the lack of a peer-review process, lack of an editorial board, and little to no description of the publication's ethical standards. In this editorial, we describe the ease with which bogus information can be published in predatory journals, and outline 3 risks to credible science associated with published information and downstream referencing, which may occur through source amnesia bias.

J Orthop Sports Phys Ther 2018;48(11):830–832. doi:10.2519/jospt.2018.0107
Control Groups: Linking Evidence to Practice
Authors: Kamper Steven J.
Published: November 2018

Despite the fact that a randomized controlled trial (RCT), by definition, can't exist without one, the control group is the forgotten stepchild of the RCT. The nature of the control group in part determines the research question that the RCT answers, and only by understanding the precise question can the results be sensibly interpreted. Given that RCTs always measure relative effectiveness of the treatment and control interventions, it is important that interpretation reflects this. That means that conclusions that a treatment is effective should always state, “compared to the control intervention.”

J Orthop Sports Phys Ther 2018;48(11):905–906. doi:10.2519/jospt.2018.0706
Comparative Study of Using Sea-Water for Enhanced Oil Recovery in Carbonate and Sandstone Reservoirs: Effects of Temperature and Aging Time on Oil Recovery
Authors: Naser Madi Abdullah , Erhayem Mohamed , Hegaig Ali , Abdullah Hesham Jaber , Amer Muammer Younis , Mohamed Abdalsalam Ali
Published: November 2018

Oil recovery process is an essential element in the oil industry, in this study, a laboratory study to investigate the effect of temperature and aging time on oil recovery and understand some of the mechanisms of seawater in the injection process. In order to do that, the sandstone and carbonate cores were placed in the oven in brine to simulate realistic reservoir conditions. Then, they were aged in crude oil in the oven. After that, they were put in the seawater to recover, and this test is called a spontaneous imbibition test. The spontaneous imbibition test in this study was performed at room temperature to oven temperature 80 oC with different sandstone and carbonate rock with aging time of 1126 hours. The result shows that the impact of seawater on oil recovery in sandstone is higher than carbonate. At higher temperature, the oil recovery is more moderate than low temperature. Likewise, as the aging time increase for both sandstone and carbonate rocks the oil recovery increase.
Performance Analysis of Local Pekanbaru Bentonite for Reactive Solid Application of Mud Drilling
Authors: Novrianti Novrianti , Khalid Idham , Melysa Richa
Published: November 2018

In oil and gas drilling activities, drilling mud is one of the most important commodities. The main mineral used as a reactive solid that works to suck fresh water and form drilling mud is bentonite. Bentonite which is used as a drilling mud in the market is mostly imported from the United States. In Indonesia there are several areas that have enough potential for bentonite minerals, namely Java, Sumatra, parts of Kalimantan and Sulawesi with reserves estimated to be more than 380 million tons. (Riyanto A, 1994). This study uses bentonite in Kulim area, Tenayan Raya City, Pekanbaru, in hopes of providing useful information input, especially in the use of bentonite minerals in drilling mud. Using local bentonite the price is cheaper and more efficient.

The object observed was the effect and number of bentonite mixed with fresh water so that the rheological properties of drilling mud such as viscosity, gel strength, mud cake and filtration loss were obtained and would be in accordance with API specification 13A standards. Whereas to find out the composition and structure of local mineral clay, SEM and EDX analyzes were performed to determine the characteristics and composition of these minerals. From these tests add additives NaCO3 and NaOH as ion exchangers and add the element Na to the sludge.

From SEM and EDX analysis, two samples taken in central Sumatra Sumatra can be categorized as clay Illite fe-rich and Clay Illite Platty. Rheological testing of drilling mud and chemical composition analysis of clay Illite fe-rich minerals and Clay Illite Platty in Riau, Central Sumatra and with the addition of additives NaCO3 and NaOH to local Clay, Rheology in mud based on Clay Illite Platty is obtained with Bentonite. commonly used as a basic material for the manufacture of oil and gas drilling mud with API Spec13 A.
Studi Microgrid System Menuju Pembangunan Desa Mandiri Energi Di Desa Temajuk Kabupaten Sambas
Authors: Yunando Yunando , Sutriyatna Sutriyatna
Published: November 2018

Abstract– Temajuk Village is one of the villages in Kecamatan Paloh Sambas regency, West Kalimantan Province, which borders directly with Sarawak (Malaysia). From 1980 to 2011 Desa Temajuk has no permanent electricity yet. In 2011, the village will have electrical energy by utilizing local energy such as Micro Hydro Power Generation, by 2012, Centralized Solar Power Generation and by 2015 Diesel Power Plant, all of which will carry each load without being integrated with the same network . So it is necessary to do the study of merging a network that is connected to one another to be able to bear the same load.Microgrid System study was then created with the aim of producing a sustainable distribution network study by combining 3 different types of plants and operational savings from the use of diesel fuel oil costs as the main power plant after the network system. Keywords- Microgrid System, cost savings
Manajemen Sisi Beban dan Optimalisasi Tingkat Konsumsi Energi Di SMK Negeri 2 Pontianak
Authors: Butarbutar Mangantar , Riyanto Mulud
Published: November 2018

Abstract–              Dalam penelitian ini dilakukan manajemen beban sebagai pendekatan sistematis dan terpadu untuk melaksanakan pemanfaatan sumber daya energi di gedung praktik SMK Negeri 2 Pontianak secara efektif, efisien dan rasional tanpa mengurangi kuantitas maupun kualitas fungsi utama gedung. Langkah pelaksanaan manajemen beban ialah dengan diawali audit penggunaan tenaga listrik. Audit beban listrik ini meliputi analisis profil penggunaan tenaga listrik, mengidentifikasi pemborosan energi dan menyusun langkah pencegahan. Audit beban  dilakukan terhadap konsumsi besarnya energi listrik, sistem pencahayaan, sistem pengkondisian udara dan peralatan listrik lainnya pada gedung tersebut. Proses audit energi listrik dilakukan secara bertahap yaitu audit energi awal yang kegiatannya meliputi pengumpulan data historis gedung dan penyusunan data energi bangunan gedung tersebut. Kemudian dilanjutkan pada audit energi rinci, yaitu jika diketahui bahwa nilai Intensitas Konsumsi Energi (IKE) lebih besar dari nilai IKE standar yang telah ditetapkan oleh Badan Standarisasi Nasional (BSN). Kegiatan audit energi rinci ini meliputi penelitian dan pengukuran konsumsi energi, kemudian dilanjutkan pada identifikasi peluang hemat energi. Hasil audit energi yang telah dilakukan menunjukkan bahwa tidak terjadi pemborosan energi, tetapi ada pemakaian energi yang tidak bijak. Hal ini dapat dilihat dari nilai IKE yang masih dibawah standar yaitu 99,75 kWh/m2 per tahun berdasarkan data rekening dengan jumlah konsumsi energi 58616.50 kWh per-tahun, sedangkan standar yang ditetapkan untuk gedung perkantoran yaitu 240 kWh/m2 per tahun . Untuk penghematan disarankan dalam penyusunan penjadwalan pemakaian gedung praktik supaya disesuaikan dengan besar konsumsi energi di setiap gedung tersebut. Keywords- Manajemen Sisi Beban, Optimalisasi Tingkat Konsumsi Energi.
Desain Dan Pembuatan Dapur/Tungku Pemanas Untuk Kerajinan Pandai Besi Untuk Meningkatkan Kualitas Produk
Authors: Rusadi Rusadi , Hadimi Hadimi , Karyadi Edi
Published: November 2018

Bisnis kerajinan besi adalah salah satu bisnis yang dapat berkembang seiring dengan perkembangan pertanian dan perkebunan.Namun perkembangannya mengalami kendala karena penggunaan teknologi manufaktur yang bersifat turun temurun sehingga kualitas produk yang dihasilkan menjadi rendah dan tidak mampu bersaing dengan produk luar. Produk kerajinan besi dalam bentuk alat pertanian dan perkebunan, sebenarnya dapat ditingkatkan kualitasnya dengan memperhatikan beberapa hal, yaitu bahan baku yang digunakan, pengaruh proses pembuatan dan pengerjaan serta proses pembuatan. Untuk alasan inilah peneliti dalam hal ini mencoba melakukan penelitian dalam bentuk tungku desain yang diharapkan dapat meningkatkan proses dan perlakuan panas sehingga menghasilkan peralatan pertanian dan produk perkebunan yang memiliki kualitas tinggi dalam hal ini sifat mekanik dan produksi yang berkualitas. biaya lebih murah.
Desain dan Implementasi Mesin Pengolah Limbah Ikan
Authors: Mooniarsih Neilcy Tjahya , .- Sumiyattinah
Published: November 2018

Abstract– Sungai Pinyuh merupakan salah satu kecamatan di kabupaten Pontianak, yang berada di pesisir pantai laut Natuna dan sebagian besar penduduknya berprofesi sebagai nelayan.  Namun potensi sumber daya perikanan dan kelautan hingga saat ini masih sangat terbatas dan belum mereka manfaatkan secara maksimal. Besarnya potensi perikanan di Kabupaten Pontianak khususnya di kecamatan Sungai Pinyuh  berbanding terbalik dengan kesejahteraan masyarakat nelayan di sana. Penduduk di kecamatan Sungai Pinyuh masih banyak yang berada dibawah garis kemiskinan, dan sebagian besar diantaranya adalah penduduk pra sejahtera. Kehidupan nelayan sangat bergantung kepada musim. Pada musim kemarau mereka mendapatkan ikan untuk dijual atau diolah menjadi ikan asin atau berbagai jenis pengolahan ikan lainnya. Ketika musim penghujan, angin kencang, dan gelombang tinggi, nelayan tidak bisa melaut dan ini berarti bahwa mereka tidak memiliki pendapatan. Sementara limbah ikan yang dihasilkan dari hasil tangkapan mereka terbuang dengan percuma karena keterbatasan modal dan teknologi. Permasalahan yang muncul pada kelompok budidaya ikan air tawar di kabupaten Pontianak adalah mahalnya harga pakan ikan. Padahal limbah ikan dapat dimanfaatkan sebagai bahan baku dari pelet ikan, yang sangat dibutuhkan oleh kelompok usaha budidaya ikan air tawar di kabupaten Pontianak. Mesin pencetak pelet ikan dengan memanfaatkan limbah ikan yang terbuang menjadi pakan ikan merupakan salah satu solusi untuk mengatasi permasalahan mahalnya harga pakan ikan dan melimpahnya limbah ikan yang belum termanfaatkan, sehingga dapat meningkatkan kesejahteraan kelompok usaha ikan di kabupaten Pontianak. Keywords– Nelayan, limbah ikan, mesin pelet ikan.
Dukungan Teknologi Pada Integrasi Tanaman Hortikultura-Ternak Sapi Untuk Pengembangan Agribisnis Yang Berkelanjutan
Authors: Sujana Ivan , Hardiansyah Gusti , Siahaan Sarma
Published: November 2018

Abstract– Konsep pertanian terpadu yang melibatkan tanaman dan ternak sudah lama diterapkan oleh petani di Indonesia, namun penerapannya masih secara tradisional, tanpa memperhitungkan dari aspek secara finansial maupun dalam konteks pelestarian lingkungan hidup. Konsep sistem tanaman-ternak dilakukan dengan mempertimbangkan aspek-aspek keberlanjutan (sustainable) yang ramah lingkungan (environmentally tolerable), secara sosial diterima masyarakat (socially acceptable) dan secara ekonomi layak (economically feasible). Pendekatan yang dilakukan adalah penggunaan input dari luar yang rendah yang dikenal sebagai LEISA (low external input sustainable agriculture). Adanya dukungan teknologi dalam pendekatan LEISA untuk integrasi usahatani tanaman hortikultura-ternak diharapkan dapat mengembangkan agribisnis yang berkelanjutan dan menciptakan lapangan kerja yang bersumber pada usaha dengan memanfaatkan sumberdaya lokal khususnya limbah peternakan dan pertanian secara lebih efisien. Limbah kotoran ternak sapi dapat diolah menjadi energi dan pupuk organik sehingga dapat mendukung usahatani tanaman hortikultura. Sedangkan limbah usahatani tanaman hortikultura dapat diolah menjadi sumber pakan ternak bagi peternakan sapi. Apabila proses integrasi tanaman hortikultura dan ternak sapi dapat berhasil dengan baik, tidak mustahil akan terjadi peningkatan produksi dan produktivitas, yang pada gilirannya akan tercapai pengembangan agribisnis yang berkelanjutan. Keywords–Limbah, Biogas, Pakan Ternak
Pengaturan Laju Aliran FluidaUntuk Meningkatkan Laju Perpindahan Panas Pada Solar Water Heater Di Kota Pontianak
Authors: Rusadi Rusadi
Published: November 2018

Abstract–Issues about the energy crisis and clean energy in the environment become an important issue. Energy that meets the above properties is solar energy. Utilization is highly dependent on climate and weather conditions in accordance with the geographical location of the place. Optimization of energy absorption needs to be done and this is usually done by conditioning or manipulating some parameters so that the level of energy absorption is more effective and efficient.This research is an expriment research by optimizing the absorption of heat energy to heat water according to climate and weather conditions in Pontianak, West Kalimantan. The variable to be conditioned or arranged so that the maximum heat transfer rate is the flow rate of the water fluid to be heated.The experimental results show that the water flow rate of 2450 ccm DHW Loop side for SHW has a temperature difference value on the exit side of the heat exchanger which is smaller than the others. This shows that the more effective the release and absorption of heat made by the fluid in the heat exchanger. Keywords– Solar energy, Solar Water Heater (SHW), fluid flow rate, heat transfer rate
Analisis Konsumsi Energi Listrik Pada Sistem Pendingin Ruangan (Air Conditioning) Di Gedung Direktorat Politeknik Negeri Pontianak
Authors: Yani Rina Dwi
Published: November 2018

Abstract– Penelitian ini bertujuan untuk melakukan analisa konsumsi energi pada gedung Direktorat Politeknik Negeri Pontianak yang pada akhirnya diharapkan untuk mendapatkan optimasi penggunaan energi pada sistem pendingin ruangan. Penelitian ini dilakukan pada ruangan yang terletak pada lantai 1, lantai 2 dan lantai 3 gedung Direktorat Politeknik Negeri Pontianak. Perhitungan beban pendinginan menggunakan metode CLTD (Cooling Load Temperature Difference) berdasarkan ASHRAE Handbook Fundamental 1997. Perhitungan beban pendinginan berdasarkan data sekunder yang kemudian hasilnya dibandingkan dengan kapasitas beban pendinginan terpasang. Hasil akhir dari penelitian ini diperoleh beban pendinginan maksimum pada kondisi puncak sebesar 794.004,52 Btu/hr (88,22 Pk), sedangkan kapasitas pendinginan yang terpasang adalah 89 Pk. Beban yang terpasang sesuai dengan hasil perhitungan ulang, maka celah penghematan masih bisa diperoleh sebesar 14,388 % dengan mengurangi faktor pencahayaan dari lampu; mengubah set point temperatur didalam ruangan; memperkecil SC (shading of Coefficien); dan mengurangi infiltrasi udara luar. Dari hasil analisis biaya, Break Event Point  (BEP) akan diperoleh kembali pada pertengahan tahun ke lima. Keywords-  Beban pendinginan, sistem pendingin udara, optimasi
Teknologi Tepat Guna Pengolahan Limbah Ikan (Kasus: Kegiatan IbM Mesin Pembuat Tepung Ikan)
Authors: Mooniarsih Neilcy Tjahja , Yacoub Redi Ratiandi , Sanjaya Bomo Wibowo
Published: November 2018

Abstract– Besarnya potensi perikanan di Kabupaten Pontianak berbanding terbalik dengan taraf hidup dan tingkat kesejahteraan masyarakat nelayan, khususnya di daerah Sungai Kunyit. Menurut data-data Dinas Perikanan dan Kelautan Kabupaten Pontianak dan hasil survey di lapangan ditemukan bahwa dan permasalahan yang dihadapi oleh kelompok mitra adalah: (1) Pengolah limbah ikan laut belum tersentuh teknologi; (2) Di daerah Sungai Kunyit limbah ikan (seperti ikan-ikan dengan ukuran kecil ataupun jenis ikan yang tidak dikonsumsi oleh masyarakat) sebagian besar tidak termanfaatkan atau dibuang sia-sia. Solusi yang ditawarkan oleh tim pelaksana I­bM adalah melakukan transfer ipteks dan memberikan keterampilan penerapan Teknologi Tepat Guna Mesin Pembuat Tepung Ikan dengan memanfaatkan besarnya potensi limbah ikan yang tersedia di Sungai Kunyit Kabupaten Pontianak. Dengan diberikannya keterampilan pemanfaatan teknologi tepat guna tersebut diharapkan dapat memberikan peluang usaha dengan prospek yang menjanjikan yang pada akhirnya akan berdampak pada peningkatan kesejahteraan masyarakat di Sungai Kunyit Kabupaten Pontianak meningkat, khususnya kelompok masyarakat yang bergerak dalam bidang usaha pengolahan dan budidaya ikan. Usaha pembuatan tepung ikan dapat bersinergi dengan kelompok-kelompok usaha masyarakat yang bergerak di bidang usaha budidaya ikan air tawar (keramba) dan usaha peternakan. Keywords-  Limbah ikan, teknologi tepat guna, tepung ikan, Kesejahteraan
Potensi Limbah Perkebunan Kelapa Sawit Sebagai Sumber Energi Alternatif Terbarukan Di Wilayah Kalimantan Barat
Authors: Fauzi Fauzi
Published: November 2018

Abstract– The area of oil palm plantations spread in 12 (twelve) regencies and 1 (one) city in West Kalimantan until 2016 has reached more than 1.4 million hectares. In addition to producing the main products of CPO, the oil palm plantation industry also produces biomass waste which, if not treated properly, will have adverse impacts on the environment. Solid waste from the processing of fresh fruit bunches can be utilized as fuel boiler driving steam turbine power plant. Liquid waste can be processed into biogas for fuel gas engines or gas turbines. While solid waste from stems and palm oil plant bark can be processed to produce bioethanol. Solid waste from the palm oil processing plant that has not been optimally utilized in the form of empty bunches of volumes reached more than 1.077.087 tons/ year and shell 301.584 tons/ year. Of these two solid wastes have the potential to generate energy of 21.826  TJ/yr. While liquid waste has the potential to produce methane gas of 66.779 on/year with a calorific valu of 3.606 TJ /yr. The total energy produced by solid and liquid waste is 25.432 TJ/yr. If used as fuel boiler or gas engine with heat transfer value into energy (efficiency) of 21,5%, will be generated electrical energy equal to 1,466,159 MWh/yr or equivalent with power plant with capacity more than 167 MW that operate throughout the year. From the processing of stem and oil palm plant stem if in every year re-planting of 4% of the plant area (48,344 ha), will potentially produce bioethanol 698.861 kL/yr. From utilization of palm oil processing waste as raw material of energy replacing fossil fuel will have positive impact to environment and potency to reduce CO2 emission up to 3,047,808 t-CO2/yr. Utilization of waste oil palm plantations into energy will provide financial benefits and environmental improvement. Keywords- palm oil, biomass waste, energy, environment
Analisis Penggunaan Aplikasi Pelaporan Dana Bantuan Operasional Sekolah (BOS)
Authors: Ishak Ishak
Published: November 2018

Abstract– Dana BOS yang dikucurkan pemerintah ke sekolah harus dipertanggung jawabkan dalam bentuk laporan sesuai dengan format yang telah ditentukan. Namun sebagian besar sekolah masih melakukan pencatatan transaksi pembukuan dana BOS secara manual, sehingga  kadang  terjadi  human error seperti kesalahan dalam  penulisan  data  yang  menyebabkan  data  menjadi  tidak  akurat  dan relevan. Tujuan dari penelitian ini adalah membangun aplikasi sistem informasi pengelolaan Dana Bantuan Oprasional Sekolah (BOS) yang memudahkan pencatatan transaksi pembukuan pada Buku  Kas  Umum (BKU), Buku Pembantu Kas (BPK), Buku Pembantu Bank (BPB), Buku Pembantu Pajak (BPP) dan membantu Manajemen SMK Negeri 2 Pontianak dalam pelaporan penggunaan dana BOS. Aplikasi ini dirancang untuk digunakan oleh Bendahara BOS dalam melakukan pencatatan transaksi keuangan. Dengan mengunakan Aplikasi Pelaporan Dana BOS proses pekerjaan lebih menjadi singkat dari proses pekerjaan secara manual sehingga terjadi penghematan pemakaian kusumsi energy listrik. Pengujian aplikasi dilakukan dengan metode pengujian black box dan hasil pengujiannya telah berjalan sesuai dengan fungsinya yang diharapkan. Hasil akhir pada penelitian ini menghasilkan sebuah aplikasi yang mampu mengatasi masalah dalam pembukuan pada laporan BOS. Keywords- BOS, Aplikasi pelaporan, BKU, BPK, BPB, BPP
Influence Analysis Of Non Performing Financing By Profit-Loss Sharing Financing Contract To The Profitability Of Islamic Commercial Bank In Indonesia
Authors: Afkar Taudlikhul
Published: November 2018

This study discusses to analyze the influence of non performing financing (NPF) from financing for the results seen from Mudaraba and Musharaka contracts to the level of profitability of Islamic banks in Indonesia. The results of this study indicate inconsistency with the theory that profitability is influenced by non performing financing (NPF). This study shows the opposite result of non-performing financing (NPF) as measured from Mudaraba contract and Musharaka contract no significant effect on profitability level of Islamic Banks in Indonesia. Simultaneous tests also show results that have no significant effect. The results of this study indicate that Non Performing Financing does not always have an effect on profitability because the value of financing problem is relatively small.
The Application of Management Accounting Techniques at Star Hotels in Denpasar City
Authors: Erawati Ni Made Adi , Krisnadewi Komang Ayu
Published: November 2018

This study aims to identify management accounting techniques applied in the hotel industry in Denpasar, Bali. Besides, this study also aims to find out how useful the information generated by the technique for management in the decision-making process. The survey results distributed offline and online are processed and analyzed by using descriptive techniques. The study results show that management accounting techniques have been applied in hotels within certain limits. The most common application of management accounting techniques employed by hotels is the preparation of flexible operating budgets and the financial performance assessment as a benchmark of budget conformity. Despite the less application of other management accounting techniques, the company realizes that the benefits resulting from this management accounting information are very important. The company's inability to provide information from other management accounting techniques is mostly caused by the inability of human resources in using such techniques.
Investigação potenciométrica de equilíbrios iônicos. Dependência matemática entre os coeficientes de atividade de espécies em equilíbrio e a força iônica: sistema Cu(II)-acetato, em meio aquoso
Authors: Pezza Leonardo , Molina Manuel , Melios Cristo Bladimiros , De Moraes Mercedes , Tognolli João Olímpio
Published: November 2018

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Allocation and Pricing of Online Group-Buying Based on the Continuous Price Function
Authors: Zhu Zhengnan , Zhu Junwu , Yang Zhou
Published: November 2018

Group-Buying has becoming a popular commodity trading mode in current business modes. However, the existing unified price of group-buying often determine the price by setting the ladder function according to the final quantities. This method not only ignores the contributions of participants to group-buying, but also cannot overcome the impact of buyers' false reports on group buying mechanism. In this paper, a pricing method of online group-buying based on continuous price function is proposed. We adopt an algorithm called VCG4GB, buyers’ payments are the sum of commodities price and the extra amount by purchase quantity. The mechanism motivates buyers to report truthful preference through the compensatory payment. We prove that the mechanism has economic attributes such as incentive compatibility through theoretical proof and simulation experiments.
Magnetocaloric Effect in RFe10X2( X=Mo, V)
Authors: El-Nasr Raghda Abu , Aly Samy H. , Yehia Sherif , Sobh Hala A.
Published: November 2018

We present a mean-field study on the magnetocaloric effect (MCE) in RFe10X2, where X=Mo, V, and R=Gd, Tb, Ho, Tm, Dy, Er, Nd for X=V. For X=Mo, R=Dy, Gd, and Nd. The two-sublattice model, involving the 4f (rare earth) and 3d(Fe) sublattices, is used. For both systems, magnetization, magnetic heat capacity, magnetic entropy and isothermal entropy change ∆Sm are calculated for different magnetic fields in the 0-5T range and the temperature range from 0 to 700K. Direct and inverse MCEs are shown to take place in these ferromagnetic/ferrimagnetic compounds. For a field change ∆H=5T, the maximum isothermal magnetic entropy change has been calculated for ferromagnetic NdFe10Mo2 compound to be 6.6 J/K mol at Tc=441 K. Both direct, and inverse MCEs have been found in ferrimagnetic compounds, e.g., for TmFe10V2, with maximum -∆Sm= J/K mol at Tc=521K and ∆Sm=  J/K mol at TN=127 K. Mean-field analysis is suitable for handling the systems we report on. Further study on the lattice and electronic contribution to entropy is planned.
On the thermodynamics of triazines. A DFT and topological study
Authors: Pasca Roxana-Diana , Moldovan Atena , Horovitz Ossi , Lupan Alexandru
Published: November 2018

Tautomerism is the relation between isomeric organic compounds, which readily interconvert, usually by relocation of a proton. It plays an important role in the biological activity of compounds. In the series of tautomeric triazines (monoxime and dioxime derivatives) energy computations have been performed. The results have shown that for the monoxime, the amino keto tautomer is favored by 10.9 kJ/mol vs. the enol form; for the dioxime tautomer, the imino keto form is 17.6 kJ/mol lower in energy in comparison with the most stable amino keto tautomer. Topological aspects have been considered. Computations have been done at DFT M06-2X/6-311G(d,p) level of theory.
Combination of Support Vector Machine and K-Fold cross-validation for prediction of long-term degradation of the compressive strength of marine concrete
Authors: Qian Chunxiang , Kang Wence , Ling Hao , Dong Hua , Liang Chengyao , Chen Huaicheng
Published: November 2018

Support Vector Machine (SVM) model optimized by K-Fold cross-validation was built to predict and evaluate the degradation of concrete strength in a complicated marine environment. Meanwhile, several mathematical models, such as Artificial Neural Network (ANN) and Decision Tree (DT), were also built and compared with SVM to determine which one could make the most accurate predictions. The material factors and environmental factors that influence the results were considered. The materials factors mainly involved the original concrete strength, the amount of cement replaced by fly ash and slag. The environmental factors consisted of the concentration of Mg2+, SO42-, Cl-, temperature and exposing time. It was concluded from the prediction results that the optimized SVM model appeared to perform better than other models in predicting the concrete strength. Based on SVM model, a simulation method of variables limitation was used to determine the sensitivity of various factors and the influence degree of these factors on the degradation of concrete strength.
Desirability Index with Sector Analysis for Investment Decisions by Bernoulli Theorem: A Case of FTSE-100
Authors: Donmez Cem Cagri , Sen Doruk
Published: November 2018

Due to complex and sophisticated nature of financial markets, many features including psychological, political and economic can influence the routine behaviour and considered by characteristic nonlinearities. There have been many efforts about the stock market prediction by using technical analysis methods. Concerning the application area of entropy into economics which could be referred as econophysics; there are two approaches that could be investigated within. These two could be named as ontological and metaphorical. As the Second Law of Thermodynamics has a critical role in the concept of ontological approach, the economy is considered as processes of physics and biology that are brought by energy while the metaphorical approach is more concerned with the application of finance and equilibrium theory on the info design of entropy. This research takes the metaphorical approach to the investigation of Oil & Gas Producers industry sector of the London Stock Exchange’s FTSE-100 index. First, we observed the necessity to analyse each stock with the Bernoulli Theorem to compute an index for the desirability of each to express the complexity of the investment decisions. Then, an analysis is conducted for the sector with the computation. During the computation phase, macroeconomic figures are introduced to the Bernoulli Theorem, as inflation. In addition to this, other stock movements in the sector are introduced for precise prediction as well as the parameter of the trading volume of each stock. With the suggested approach, the desirability index is formed as an unconventional theoretical approach within econophysics for expression of the complex nature of investment environment.
On the nature of steel fatigue fracture
Authors: Kremnev Leonid , Matyunin Vyacheslav , Marchenkov Artem , Vinogradova Larisa
Published: November 2018

Experimental data confirmed that if steel cyclic stress reduces to less than tensile yield stress values, i.e., in case of high-cycle fatigue, the mechanism of fracture changes from dislocation to vacancy one. The authors based their findings on the fact that steel density determined by the method of liquid displacement is less than that of steel in both initial conditions and after fracture under the cyclic loads exceeding tensile yield stress values. In the latter case steel hardness increases, whereas the specimens fractured under the cyclic stresses less than their tensile yield stress values show no change in hardness. It means that in such a case metal fractures without strain hardening, i.e., undergoes brittle fracturing developing by vacancy mechanism rather than by dislocation one. As a result, such steel obtains the structure and properties similar to those appearing after its exposure to radiation, i.e., friability and brittleness.
Radiographic X-ray Images Enhancement with Edge Preservation using Singular Value Decomposition
Authors: Bakthula Rajitha , Agarwal Suneeta
Published: November 2018

Contrast enhancement is one of the important issues in Medical X-ray imaging since these image, in general, are of low contrast and luminance. In medical X-ray imaging system viewing the bone structure and soft tissues are important for better medical diagnosis. The accuracy of Medical diagnosis of a patient purely depends on the clarity of the image. Hence an X-ray image must be well enhanced at the same time edges must be preserved and highlighted while applying image pre-processing technique. This is a challenging task in literature. In literature many techniques had been proposed for improving the low contrast images in various applications like satellite images, medical images, etc. Standard methods include General Histogram Equalization (GHE), Local Histogram Equalization (LHE), AHE or CLACHE, Brightness Preserving Histogram Equalization (BBHE), etc. All these methods rely on histogram equalization on the entire image, might lead to loss of edge information. Since Soft-Tissues and bone pixels have similar values, global equalization methods might fail. So to resolve these challenges, this paper presents a new method using Singular Value Decomposition (SVD) for image enhancement and also improves the edge quality. Proposed method works in two phases: background suppression and foreground enhancement. The proposed method decomposes the x-ray image using SVD and extracts the singular values of the image (which represents the order of luminance in the image). These singular values are further analyzed to identify the highly dominating singular values and are used for background suppression. Later the foregrounds, i.e., the bone pixels are enhanced through histogram equalization. Advantage of the proposed method is shown experimentally using various images like a hand, pelvic, skull and chest of a human. As standard matrices, PSNR, SNR, and Entropy focus on complete enhanced image (i.e., foreground and background) might fail to justify the improvement in enhancement. Thus, in this paper performance is evaluated using standard texture metrics: homogeneity, contrast, entropy, mean and standard deviation. Results of the proposed method are compared with standard literature methods like AHE, CLACHE, MMBEBH, and BHE. The proposed method has shown the better results with highest homogeneity (0.88), lowest contrast (0.32), highest correlation (0.97), and highest energy (0.21). Edge preservation accuracy is also highest (i.e., 0.98%) in comparison to literature methods.
Graphene/ Graphene Oxide Based Pyrimidine Hybrid Materials for Metal Ion Sensing and DFT Study
Authors: Kumar Pramanand , Bora Chandramika , Sukul Pradip K. , Das Subrata
Published: November 2018

Chemical and biological sensors are gaining wide popularity in day-to-day life and significantly help to increase the survivability by providing early warning for explosives, metal pollutant, and chemical warfare. GR analog based sensor devices have several advantages for chemical and biological sensing. The structural or chemical modifications of GR remarkably improve the properties of such device applications. Keeping this in mind, we have designed and synthesized pyrimidinedione-functionalized graphene oxide (FGO) and functionalized graphene (FG) sequentially. Synthesis of the hybrid materials was done using the simple hydrothermal method. The materials were characterized by various spectroscopic and analytical techniques. XRD study showed formation of well exfoliated GO sheets in the composite. FTIR data indicates the formation of GO-NO-Ur composites. Density functional theory (DFT) calculation was also investigated to understand the various non-covalent interactions of the NO-Ur and FGO. For the detection of metal ions, synthesized nanocomposite was analyzed to sense many metal ions (Ag+, Cd2+, Cu2+, Fe3+, Hg2+, Mo2+, Ni2+, and Zn2+) and we observed strong binding mood against Fe3+ ions having LOD and LOQ value of 0.0032 μM and 0.01 μM respectively.
Ab initio calculation on the Optical Properties of AA- Stacked two dimensional Graphene, Silicene, Germanene, and Stanene
Authors: John Rita , Merlin Benita
Published: November 2018

In this study, we have analyzed the electronic band structure and optical properties of AA-stacked bilayer graphene and its 2D analogues and compared the results with single layers. The calculations have been done using Density Functional Theory with Generalized Gradient Approximation as exchange correlation potential as in CASTEP. The study on electronic band structure shows the splitting of valence and conduction bands. A band gap of 0.342eV in graphene and an infinitesimally small gap in other 2D materials are generated. Similar to a single layer, AA-stacked bilayer materials also exhibit excellent optical properties throughout the optical region from infrared to ultraviolet. Optical properties are studied along both parallel (||) and perpendicular ( ) polarization directions. The complex dielectric function (ε) and the complex refractive index (N) are calculated. The calculated values of ε and N enable us to analyze optical absorption, reflectivity, conductivity, and the electron loss function. Inferences from the study of optical properties are presented. In general the optical properties are found to be enhanced compared to its corresponding single layer. The further study brings out greater inferences towards their direct application in the optical industry through a wide range of the optical spectrum.
Severe plastic deformation of Al-1%Cu Alloy processed by a Simple Cyclic Extrusion Compression technique
Authors: Abdelaziem Walaa , Hamada Atef , Hassan Mohsen A.
Published: November 2018

Severe plastic deformation is an effective method for improving the mechanical properties of metallic alloys through promoting the grain structure. In the present work, simple cyclic extrusion compression technique (SCEC) has been developed for producing a fine structure of cast Al-1 wt. % Cu alloy and consequently enhancing the mechanical properties of the studied alloy. It was found that the grain structure was significantly reduced from 1500 µm to 100 µm after two passes of cyclic extrusion. The ultimate tensile strength and elongation to failure of the as-cast alloy were 110 MPa and 12 %, respectively. However, the corresponding mechanical properties of the two pass CEC deformed alloy are 275 MPa and 35%, respectively. These findings ensure that a significant improvement in the grain structure has been achieved. Also, cyclic extrusion deformation increased the surface hardness of the alloy by 49 % after two passes. FE-simulation model was adopted to simulate the deformation behavior of the material during the cyclic extrusion process using DEFORMTM-3D Ver11.0. The FE-results revealed that SCEC technique was able to impose severe plastic strains with the number of passes. The model was able to predict the damage, punch load, back pressure, and deformation behavior.
Keynote: CMST 2018
Authors: Nedyalkova Miroslava Aleksandrova
Published: November 2018

Molecular dynamics simulations were performed to study the ion and water distribution around a spherical charged nanoparticle (Fig.1). A soft nanoparticle model was designed using a set of hydrophobic interaction sites distributed in six concentric spherical layers. To simulate the effect of charged functionalized groups on the nanoparticle surface, a set of charged sites were distributed in the outer layer. Four charged nanoparticle models, from a surface charge value of −0.035 C m−2 to −0.28 C m−2 were studied in NaCl and CaCl2 salt solutions at 1 M and 0.1 M concentrations to evaluate the effect of the surface charge, counterion valence, and concentration of added salt.

We obtain that Na+ and Ca+2 ions enter inside the soft nanoparticle. Monovalent ions are more accumulated inside the nanoparticle surface, whereas divalent ions are more accumulated just in the plane of the nanoparticle surface sites. The increasing of the salt concentration has little effect on the internalization of counterions, but significantly reduces the number of water molecules that enter inside the nanoparticle. The manner of distributing the surface charge in the nanoparticle (uniformly over all surface sites or discretely over a limited set of randomly selected sites) considerably affects the distribution of counterions in the proximities of the nanoparticle surface.rphological changes.
Improvement of Indoor Air Distribution by Utilizing Small Fans Powered by Solar Energy
Authors: Jassim Esam I.
Published: November 2018

A pilot-scale HVAC system is constructed to study the performance of air quality inside the comfort-zone when small fans are utilized to perform the air circulation. The research investigates the impact on energy consumption when the fan of the coil is eliminated from the fan coil unit (FCU).  This would improve access to separate comfort zone controls and positively affect thermal comfort in those areas. In the study, the comfort room temperature variation is measured during 15 minutes in four cases, namely: all fans ON, all Fans OFF, 1-Fan ON, and 2-Fans ON. Optimization of the fan location that forces the zone temperature to stabilize around the set-point value in shorter time is recorded. Observation of the results indicates that the position of the fan does affect the time elapsed to reach the set-point as it affects the inside-air turbulence. Comparison of the four cases shows that the All-Fans-ON case cools down the zone temperature faster than other cases in entire space. In return, the space has fluctuated temperature in the cases of the 1-Fan and 2-Fans ON. This is due to the reduction in the turbulence intensity of the air near the Fan(s)-OFF region.
Application of GIS, Hydraulic and Hydrologic Modelling to Investigate the Changes of Flood Inundation Characteristics due to the Construction of Dams for different scenarios
Authors: Elhanafy Hossameldin M.
Published: November 2018

The novelty of the research project reported in this paper is the coupling of hydrological and hydraulic modeling which are based on the first principal of fluid mechanics for the simulation of flash floods at Wadi Elarish watershed to optimize the a new location of another dam rather than Elrawfa dam which already exist. Results show that, the optimum scenario is obtained by the construction of the west dam. As a direct result of this dam, the downstream inundated area can be reduced up to 15.7 % as function of reservoir available storage behind the dam. Furthermore, calculations showed that the reduction rate of inundated area for 50-year floods is largely more than 100-year floods, implies the high ability of west dam on flood control especially for floods with shorter return period.
Pengembangan Perangkat Pembelajaran Berbasis Masalah Meggunakan Media Moodle Untuk Meningkatkan Keterampilan Berpikir Kritis Mahasiswa Pada Materi Gelombang
Authors: Herayanti Lovy , Gummah Syifaul , Sukroyanti Bq Azmi , Gunawan Gunawan , Makhrus Muh.
Published: November 2018

E-learning is learning process through electronic media, especially internet. E-learning enables learners to learn or possess science no matter when and where. The goal of this study was to develop Moodle in problem-based learning in order to improve learnersÃ¢â¬â¢ critical thinking skills. . The study was a research and development (R&D) study conducted in four stages, i.e. preliminary study, developing design, testing Moodle as media for problem-based learning, and result dissemination. Subjects of this study were students of physic education program of Faculty of Mathematics and Science Education of IKIP Mataram who enrolled in Wave course. Data on critical thinking skills is collected through tests, where tests have been validated by experts. The results of the study indicate an increase in students' critical thinking skills. Moreover, students gave positive response towards the use of Moodle developed as media in problem-based learning.