bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGARUH JUMLAH UANG BEREDAR, INFLASI, DAN NILAI TUKAR TERHADAP RETURN SAHAM BANK UMUM
Authors: Kainde Linne , Karnoto Gracellah Sheryl 
Published: July 2021

Penelitian ini bertujuan menganalisis pengaruh Jumlah uang beredar, Inflasi dan Nilai Tukar terhadap Return Saham Bank Umum. Populasi pada penelitian ini adalah perusahaan sektor perbankan kelompok bank umum konvensional yang terdaftar di Bursa Efek Indonesia periode 2014 – 2018. Dengan menggunakan metode purposive sampling maka sampel pada penelitian ini berjumlah 30 bank dengan total 1800 data. Metode statistik yang digunakan adalah metode regresi antara variabel independen yakni jumlah uang beredar, inflasi, dan nilai tukar terhadap variabel dependen return saham. Hasil penelitian menunjukkan bahwa jumlah uang beredar dan nilai tukar tidak berpengaruh, sedangkan Inflasi signifikan berpengaruh terhadap return Saham bank umum. Tujuan utama investor dari investasi adalah peningkatan kekayaan melalui return saham untuk itu investor harus memiliki kemampuan yang baik dalam menganalisa dipasar modal berdasarkan faktor-faktor makroekonomi sehingga investor dapat melakukan portofolio investasi dengan baik.
Kata Kunci: Jumlah uang beredar, inflasi, nilai tukar, return saham
KOMPARASI MAKRO EKONOMI NEGARA-NEGARA ASEAN TAHUN 2015-2018
Authors: Likuayang Allenly Aldo , Matindas Ernest Cornelius 
Published: July 2021

Ekonomi global yang semakin kompetitif membuat setiap negara bekerja keras untuk meningkatkan kinerja ekonomi. Penelitian ini bertujuan untuk mengetahui perbandingan kondisi makro ekonomi negara-negara ASEAN yaitu Indonesia, Brunei Darussalam, Filipina, Kamboja, Laos, Malaysia, Myanmar, Singapura, Thailand dan Vietnam selama tahun 2015 - 2018 yaitu di masa periode pemerintahan Presiden RI Ir. H. Joko Widodo. Kondisi makro ekonomi setiap negara ASEAN digambarkan melalui beberapa indikator yaitu pertumbuhan ekonomi, pendapatan per kapita, tingkat inflasi, dan tingkat pengangguran. Perbandingan makro ekonomi pada negara ASEAN dilakukan melalui analisis komparasi uji beda One Way ANOVA untuk menjawab apakah terdapat perbedaan yang signifikan antara indikator makro ekonomi Indonesia dan 9 negara ASEAN, dan teknik uji lanjut (post hoc test) menggunakan uji Tukey Honestly Significant Difference untuk menjelaskan pola perbedaan dalam hasil uji One Way ANOVA. Hasil uji beda One Way ANOVA menununjukan pertumbuhan ekonomi, pendapatan per kapita, tingkat inflasi dan tingkat pengangguran di Indonesia dan 9 negara ASEAN masing-masing memiliki nilai signifikansi α kurang dari 0.05 sehingga disimpulkan bahwa pertumbuhan ekonomi, pendapatan per kapita, tingkat inflasi dan tingkat pengangguran di Indonesia dan 9 negara ASEAN memiliki perbedaan yang signifikan.
Kata kunci: ASEAN, makro ekonomi, pertumbuhan ekonomi, pendapatan per kapita, tingkat inflasi, tingkat pengangguran
Aiman al-Utūm wa Asy‛āruhu al-Jamālīyyah al-Badī‛iyyah (Dirāsah al-Muhassināt al-Lafzdīyyah fī al-Jinās wa al-Saja’
Authors: Pombaile Septiyani Y , Hula Ibnu Rawandhy , Saleh Sriwahyuningsih 
Published: July 2021

الأهداف من إجراءات هذا البحث هي: (1) أن تعرف الباحثة أو القارئ أبيات شعر التي تتضمن فيها السجع في شعر أيمن العتوم. (2) أن يعرف الباحثة أو القارئ أبيات شعر التي تتضمن فيها الجناس في شعر أيمن العتوم . منهج البحث الذي يستخدم الباحثة هو بحثاً نوعياً وصفياً، و الأسلوب المستخدمة في جمع المواد هي الطريقة المكتبية، و أما مصادر المواد المبحوثة المستخدمة في هذا البحث نوعان من المصادر و هما مصدر المواد الأولية و مصدر المواد الثانوية. من نتائج البحث، هي أن أنواع الجناس في ثلاثة موضوعات من أشعار أيمن العتوم 49 جناس و تكون 28 الجناس التام و غير التام 21. و أما السجع المطرف 9، و السجع الموازي 6، و الترصيع 1.
Analaisis Struturalisme Ferdinand De Saussure pada Puisi الأم Karya Kahlil Gibran
Authors: Muwaffa Royyi 
Published: July 2021

Karya sastra merupakan salah satu bentuk ekspresi pengarang dalam mengungkapkan perasaan atau pengalaman yang pernah dialami dan digunakan sebagai media untuk menyampaikan pesan kepada orang lain. Salah satu bentuk karya sastra adalah puisi. Puisi merupakan karya sastra yang mengutamakan keindahan bahasa dan kepadatan makna. Tidak semua pembaca dapat memahami secara langsung tentang makna yang terkandung dalam puisi. Untuk dapat memahami maknanya, maka dibutuhkan suatu pendekatan untuk menganalisis unsur-unsur intrinsik di dalam puisi tersebut. Pendekatan yang digunakan dalam artikel ini adalah pendekatan strukturalisme yang akan menjelaskan setiap unsur yang terdapat dalam puisi, seperti tema, gaya bahasa, amanat, dan sebagainya. Penelitian ini merupakan penelitian deskriptif kualitatif dikarenakan peneliti melakukan analisis dengan dua teknik, yaitu teknik simak dan catat. Teknik simak dilakukan dengan cara membaca dan memahami setiap baris sajak dalam puisi, dan teknik catat dilakukan dengan cara mencatat hasil penelitian setelah peneliti memahami makna yang terkandung dalam setiap baris. Objek yang digunakan dalam penelitian ini adalah puisi Ibu Kahlil Gibran yang merupakan puisi tentang peran dan karakter seorang Ibu yang memiliki kasih sayang yang tidak terbatas. Kata kunci: strukturalisme, struktur internal dan eksternal, puisi Ibu karya Kahlil Gibran
A Computational Examination of the Sources of Statistical Variance in Particle Parameters During Thermal Plasma Spraying
Authors: Williamson R.L. , Fincke J.R. , Chang C.H. 
Published: July 2021

Abstract
Computational modeling is used to systematically examine many of the sources of statistical variance in particle parameters during thermal plasma spraying. Using the computer program LAVA, a steady-state plasma jet typical of a commercial torch at normal operating conditions, is first developed. Then, assuming a single particle composition (ZrO2) and injection location, real world complexity (e.g., turbulent dispersion, particle size and density, injection velocity and direction, etc.) is introduced "one phenomenon at a time" to distinguish and characterize its effect and enable comparisons of separate effects. A final calculation then considers all phenomena simultaneously, to enable further comparisons. Investigating each phenomenon separately provides valuable insight into particle behavior. For the typical plasma jet and injection conditions considered, particle dispersion in the injection direction is most significantly affected by (in order of decreasing importance): particle size distribution, injection velocity distribution, turbulence, and injection direction distribution or particle density distribution. Only the distribution of injection directions and turbulence affect dispersion normal to the injection direction, and are of similar magnitude in this study. With regards to particle velocity and temperature, particle size is clearly the dominant effect.
Numerical Simulation of Thermal Spray Coating Formation
Authors: Pasandideh-Fard M. , Mostaghimi J. , Chandra S. 
Published: July 2021

Abstract
A three-dimensional model of free-surface flows with heat transfer, including solidification, was used to model the build-up of a coating layer in a thermal spray process. The impact of several nickel particles on a stainless steel plate in different scenarios was considered. Particles diameter ranged from 40 to 80 µm and their impact velocity ranged from 40 to 80 m/s. Particles were initially super-heated; their temperature ranged from 1600 to 2000°C. Fast growth of solidification was found to be one cause of particle splashing in thermal spray coatings. Different splat morphologies obtained from the numerical model were comparable with those obtained from the experiments. Simulation of the sequential impact of two nickel particles showed side-flow jetting and particle splashing observed in experiments. The numerical model proved to be capable of simulating different impact scenarios that occur in a thermal spray; this was demonstrated by simulating nine consecutive particles during their impact on the substrate. Several characteristics of a coating layer build-up such as particle splashing and formation of small satellite droplets and rings around the splat could be seen in the numerical results. Particle splashing is one possible cause of porosity formation in thermal spray coatings.
Computational Fluid Dynamics Analysis of Gas and Particle Flow in Flame Spraying
Authors: Nylén P.E. , Bandyopadhyay R. 
Published: July 2021

Abstract
The industrial flame spraying process has been analyzed by three-dimensional Computational Fluid Dynamics (CFD) simulation. The actual process is employed at the Volvo Aero Corporation for coating of fan and compressor housings. It involves the Metco 6P gun where the fuel, a mixture of acetylene and oxygen, flows through a ring of 16 orifices, while the coating material, a powder of nickel-covered bentonite, is sprayed through the flame with a stream of argon as a carrier gas by a central orifice. The gas flow was simulated as a multi-component chemically reacting incompressible flow. The standard, two equations, k-e turbulence model was employed for the turbulent flow field. The reaction rates appeared as source terms in the species transport equations. They were computed from the contributions of the Arrhenius rate expressions and the Magnussen and Hjertager eddy dissipation model. The particles were modeled using a Lagrangian particle spray model. In spite of the complexity of the system, the complex geometry and the numerous chemical reactions, the simulations produced fairly good agreement with experimental measurements. The powder size distribution was found to play a critical role in the amount of unmelted fraction of particles. The modeling approach seems to give a realistic description of the physical phenomena involved in flame spraying, albeit some model refinement is needed.
Structure and Properties of Thermally Sprayed Amorphous Polymer Coatings
Authors: Twardowski T.E. , Fang X.H. , Knight R. 
Published: July 2021

Abstract
The high velocity oxy-fuel (HVOF) combustion spray technique has been shown previously to be an excellent solution for depositing crystalline matrix nano-reinforced polymer coatings [1]. Dense polymer coatings can be produced by HVOF combustion spraying by controlling particle dwell time in the jet and through substrate thermal management. Use of an amorphous matrix material, polycarbonate, will enable the role of matrix crystallinity on the structure and properties of thermally sprayed polymer composite coatings to be separated from effects resulting from the reinforcing phase. An amorphous, commercial polycarbonate resin with a broad particle size distribution of irregular particle morphology has been successfully deposited. Results from optical microscopy, X-ray diffraction, scratch and density measurements are presented. The influence of variations in process parameters such as spray distance, nozzle length, chiller temperature, fuel: oxygen ratio, and total gas flow rate on coating microstructure are presented.
Reactive Plasma Spray for the Deposition of Ti/TiN Coatings: A Comparative Compositional Study by X-Ray Diffraction (XRD) and X-Ray Photoelectron Spectroscopy (XPS)
Authors: Bacci T. , Bardi U. , Borgioli F. , Galvanetto E. , Galliano F. , Lavacchi A. , Scrivani A. 
Published: July 2021

Abstract
This paper compares two methods for determining the composition of Ti/TiN coatings deposited by reactive plasma spraying. The coatings were obtained by spraying titanium powder in a low-pressure N2/Ar atmosphere. The resulting film has a variable nitrogen content in the form of titanium nitrides, depending on gas partial pressure, total pressure, sample-source distance, and other parameters. The composition of the film was determined using X-ray diffraction and X-ray photoelectron spectroscopy. The two techniques provide similar results and either can be used for the compositional characterization of these coatings.
The Influence of Powder Characteristics on the Properties of Detonation Sprayed Cr3C2-25NiCr Coatings
Authors: Somaraju K.R.C. , Srinivasarao D. , Sivakumar G. , Sen D. , Rao G.V.N. , Sundararajan G. 
Published: July 2021

Abstract
Thermal sprayed chromium carbide (Cr3C2)-25% NiCr (Ni-20%Cr) coatings are extensively used in wear resistant applications especially under conditions wherein operating temperatures are likely to be higher than 500°C . The performance of the Cr3C2-NiCr coatings under such conditions depend on a variety of coating properties like the porosity, microstructure, extent of decarburization of Cr3C2 phase and hardness. One of the parameters which affects the above mentioned coating properties is the characteristics of the powder utilized for thermal spraying. In the present study, Cr3C2-25% NiCr powders obtained from four different sources has been utilized to form Cr3C2-NiCr coatings on steel substrates utilizing the detonation spray coating (DSC) system. The Cr3C2-NiCr powders utilized vary from each other in terms of manufacturing route employed (sintered and crushed, pre-alloyed, blended, etc.), particle size distribution, particle shape and even phases present. The influence of each of these powder characteristics on the coating microstructure, porosity, hardness, extent of carbide dissolution and ultimately on coating performance (i.e. sliding and abrasive wear resistance) has been evaluated.
Micro and Macroscopic Approaches to Residual Stress Generation Mechanism of Thermal Spray Coatings
Authors: Tobe S. , Andou Y. , Ando M. , Kuroda S. , Akita K. 
Published: July 2021

Abstract
Microscopic and macroscopic residual stress measurements and a finite element method (FEM) for stress analysis of thermal spray coatings have been carried out to investigate the residual stress generation mechanism. The residual stresses of one splat, laminated two splats and coatings were measured by a micro-beam x-ray stress measurement system and the macroscopic residual stresses were measured in-situ by the curvature change of the thin substrate plate during and after spraying. Two coating materials were employed in this study to deposit the coatings. One is molybdenum of which the coefficient of thermal expansion (CTE) is smaller than that of steel substrate and the other is 80%Ni-20%Cr alloy which has higher CTE than steel. The substrate was preheated up to 550°C just before spraying. The residual stresses of the splat and a coating are fundamentally the same level. The FEM analysis on the residual stress was also useful and by the comparison of two measurement results of microscopic and macroscopic residual stresses, the generation mechanism was discussed.
Microstructure Effects on Stainless Steel Substrates from Deposition of Plasma Spray Coatings
Authors: Wright R.N. , Swank W.D. 
Published: July 2021

Abstract
Cold work and heat treatment influence the mechanical properties, residual stress-state, and corrosion resistance of austenitic stainless steels. In this study we have examined changes in the defect substructure and microstructure of Type 304 stainless steel resulting from surface preparation, and deposition of bond coats and thick ceramic coatings using plasma spray methods. The structure of the stainless steel was examined as a function of depth from the coating surface using optical and transmission electron microscopy, and x-ray diffraction. Grit blasting was found to severely cold work the material to a depth of tens of microns, and the amount of cold work varied with measured abrasive particle velocity. The heat input to the surface as a result of depositing a metallic bond coat or thick ceramic coating resulted in substantial annealing of the cold work imparted into the substrate by surface preparation. There was, however, no evidence of change in grain size near the substrate-coating interface that could be attributed to recrystallization or grain growth in the substrate.
Production and Characterization of HVOF Sprayed NiCr-TiC Coatings Using SHS Powder Feedstock
Authors: Blatchford M.T. , Horlock A.J. , McCartney D.G. , Shipway P.H. , Wood J.V. 
Published: July 2021

Abstract
In this paper, the production of NiCr-TiC powder by SHS, suitable for HVOF spraying, is discussed together with results on the microstructure and coating properties. Compacts for SHS were prepared by mixing elemental Ti and C with pre-alloyed Ni-20wt.% Cr powder to give an overall composition of 35wt.% NiCr and 65wt.% TiC. These were then ignited and a self-sustaining reaction proceeded to completion. Reacted compacts were crushed, sieved, and classified to give feedstock powders in size ranges of 10-45 µm and 45-75 µm. All powder was characterized prior to spraying based on particle size distribution, x-ray diffraction (XRD), and scanning electron microscopy (SEM/EDS). Thermal spraying was performed using both H2 and C3H6 as fuel gases in a UTP/Miller Thermal HVOF system. The resulting coatings were characterized by SEM and XRD analysis, and the microstructures correlated with powder size and spray conditions. Abrasive wear was determined by a modified 'dry sand rubber wheel' (DSRW) test and wear rates were measured. It has been found that wear rates comparable to those of HVOF sprayed WC-17wt% Co coatings can be achieved.
Properties of Nickel Superalloy Coatings As-Sprayed and with Nd-YAG Laser Remelting
Authors: Tuominen J. , Vuoristo P. , Mäntylä T. , Kylmälahti M. , Vihinen J. , Andersson P.H. 
Published: July 2021

Abstract
Thermal spray processes are widely used to protect materials and components against wear, corrosion and oxidation. Despite the use of the latest developments of thermal spraying, such as HVOF and plasma spraying, these coatings may in certain operation conditions show inadequate performance, e.g. due to insufficient bond strength and/or mechanical properties and corrosion resistance inferior to those of corresponding bulk materials. The main cause for a low bond strength in thermal sprayed coatings is the low process temperature, which results only in mechanical bonding. Mechanical and corrosion properties typically inferior to wrought materials are caused by the chemical and structural inhomogeneity of the thermal sprayed coating material. In order to overcome the drawbacks of sprayed structures and to markedly improve the coating properties, laser remelting of sprayed coating was studied in the present work. The coating material was nickel based superalloy Inconel 625, which contains chromium and molybdenum as the main alloying agents. The coating was prepared by high-velocity oxy-fuel spraying onto mild steel substrates. High power continuous wave Nd-YAG laser equipped with large beam optics was used to remelt the HVOF sprayed coating using different levels of power and scanning speed. The coatings as-sprayed and after laser remelting were characterized by optical and electron microscopy. Laser remelting resulted in full homogenization of the sprayed structure. This strongly influenced positively the performance of the laser remelted coatings in adhesion, wet corrosion and high temperature oxidations test. The properties of the laser remelted coatings were compared directly with the properties of as-sprayed HVOF coatings, and with PTA overlay coatings and wrought Inconel 625.
Wires for Arc and High Velocity Flame Spraying—Wire Design, Materials, and Coating Properties
Authors: Wilden J. , Wank A. , Schreiber F. 
Published: July 2021

Abstract
Cored wires show a high potential for production of protective coatings for combined corrosion and wear applications. Iron and nickel based grooved cored wires without and with different reinforcing carbide fillers have been sprayed by arc- and high velocity combustion wire (HVCW) spraying with a Praxair Type 216 gun. Depending on the wear mechanism coatings with a similar abrasive or oscillating wear resistance like HVOF WC/Co/Cr 86/10/4 have been produced. For effective protection against oscillating wear wires with a large diameter and therefore a high content of reinforcing carbide filler have to be applied. All nickel based coatings with chromium addition show an improved corrosion resistance compared to HVOF-sprayed WC/Co/Cr 86/10/4. For coatings from wires with NiCr 80/20 velum no effect of severe sulphurous corrosion in the DIN 50018 test is observed. HVCW-spraying is especially suitable, when only a low degree of interaction between velum and filler material is wanted as for cermet-like coatings. Conventional arc-spraying rather meets the demands of a high degree of interaction between velum and filler necessary for the production of pure metallic coatings like NiCrBSi. All manufactured coatings show good machinability.
Effect of Interface Wetting on Flattening of Freely Fallen Metal Droplet Onto Flat Substrate Surface
Authors: Fukumoto M. , Nishioka E. , Matsubara T. 
Published: July 2021

Abstract
A free falling experiment was conducted as a simulation of a thermal spray process. A flattening behavior of the freely fallen metal droplet impinged onto a flat substrate surface was fundamentally investigated. The substrates were kept at various designated temperatures, and the substrates coated with gold by PVD were also prepared in order to investigate the effect of a wetting at the splat/substrate interface on the flattening behavior of the droplet. A falling atmosphere was atmospheric pressure nitrogen to prevent the oxidation of the melted droplet, and the experiments under low-pressure condition were also conducted. A transition of the splat morphology was recognized in atmospheric pressure nitrogen experiments, that is, the splat morphology on a room temperature substrate was a splash type, whereas that on a high temperature substrate was a disk type. The cross-section microstructure of the splat obtained on the room temperature substrate was an isotropic coarse grain, whereas that on the high temperature substrate was a fine columnar. The grain size changed transitionally with increasing the substrate temperature. Transition temperature on the gold-coated substrate was higher than that on the substrate without coating. The cross-section microstructure of the splat obtained under low-pressure was a fine columnar even on the room temperature substrate. The results indicate that the metal droplet wets better under low-pressure condition than in atmospheric pressure nitrogen condition, and the wetting has a significant role in the flattening of the droplet.
Plasma Sprayed Ultra High Temperature Ceramics for Thermal Protection Systems
Authors: Valente T. , Bartuli C. , Visconti G. , Tului M. 
Published: July 2021

Abstract
Reusable space vehicles, which must withstand re-entry into the Earth's atmosphere, require external protection systems (TPS) which are usually in the forms of rigid surface in areas of high or moderate working temperature. High heat fluxes and temperatures related to high performance hypervelocity flights also require the use of TPS materials having good oxidation and thermal shock resistance, dimensional stability, and ablation resistance. Components by these materials are usually fabricated, starting from either billets or plate stocks, by uniaxial hot pressing, and complex parts, such as low radius edges, are then obtained by electrical discharge machining technique. This article investigates an alternative fabrication technology, based on plasma spraying, to produce near net shape components. Results of experimental activities, such as optimization of plasma spraying parameters based on a DOE approach, are reported and discussed.