bluuebunny/crossref_metadata_2025 huggingface dataset:
Dynamics of gas phase concentration in SPH
Authors: Davydov M N
Published: November 2019

Various approaches are considered in the method of smoothed particle hydrodynamics (SPH) for calculating the volume concentration of gas phase in a liquid during the rarefaction or destruction. A scheme for calculating the concentration of gas phase, consisting of three stages, is proposed. At low concentrations, the calculation is carried out according to the full model, which includes the laws to describing the concentration dynamics. At high concentration the simplified model is used, when the change in concentration is determined by the dynamics of liquid. When the maximum concentration is reached, corresponding to a single particle without neighbors, the rate of concentration growth is fixed and the further development of the process is governed by inertia.
The expansion of the dynamic range of photodetectors in hydrodynamic research using active optical shutters
Authors: Rakhmanov V V , Anikin Yu A , Kulikov D V , Pavlov V A , Schepikhin I V
Published: November 2019

The implementation of the method expanding the dynamic range of photodetectors in hydrodynamic experiments based on the use of active optical shutters is presented. A method that allows using modern CMOS cameras as optical radiation receivers and laser emitters as illuminators has been developed. The attenuation coefficients of linearly polarized light on the photodetector has been measured. An experimental estimate of the expansion of the dynamic range in terms of the intensity of the received radiation in the presence of background highlights has been made.
Determining kinetic constants for reactions of zinc oxide sorbents with syngas components
Authors: Kagramanov Y A , Ryzhkov A F , Tuponogov V G , Nikitin A D
Published: November 2019

Hot gas clean-up (HGC) technology uses special zinc oxide based sorbents. Sorbent attrition is one of the negative factors that should be improved. The current study has determined that one of the main reasons of sorbent reduction is interaction with syngas components, namely, carbon monoxide, hydrogen, methane and carbon (side reactions). In this study, kinetics of main reaction (h2s adsorption by zinc oxide) and side reactions were considered and compared. Models of chemical processes and mechanisms were considered as well. Complicated nature of HGC process was researched. It is stated that the process can run in three different phases (gas, solid, dust). Methods of TGA data calculation are presented and compared with literature. In syngas where hydrogen sulphide concentration is much lower than concentration of hydrogen and carbon monoxide, main reaction is dominant at temperatures near 300–500 °C. At 650 °C main reaction takes the second place after H2reduction, and at 850°C it is the third after CO reduction (with diffusion resistance of product shell). Hydrogen reduction is more active than carbon monoxide reduction, that is why CO/H2ratio in syngas should be increased for rising the HGC operation temperature. A wide range of processes (main and side reactions) was considered with the use of the same materials, equipment and methods.
Thermal conductivity of CsBi alloy in liquid state
Authors: Sh Agazhanov A , Savchenko I V , Abdullaev R N , Stankus S V
Published: November 2019

Experimental data on the thermal conductivity and thermal diffusivity of a liquid alloy CsBi of the equiatomic composition in the temperature range from the liquidus line to 1173 K have been obtained. The measurements were carried out on the basis of the laser flash method using a sealed steel cell. For studied properties the approximation equations and a table of recommended values are presented. The analysis of the obtained results confirms the existing assumption about liquid cesium-bismuth alloys as associated solutions.
Morphology and optical properties of films based on CVD graphene and nanostructured gold
Authors: Boyko E V , Smovzh D V
Published: November 2019

In the work presented, the polymer-graphene-gold composites obtained by the methods of chemical vapor deposition and pulsed laser ablation (PLA) are studied. The morphological and optical properties of the given samples are studied in detail. It is shown that with an increase in the number of laser pulses in the PLA method, the metal coating transforms from separate small gold particles to a continuous cover with the presence of large nanoparticles. It is shown that a change in the gold film thickness influences significantly the efficiency of plasmon attenuation of a signal: with an increase in the average mass thickness, the effect increases and reaches its maximal value at film thickness of 6 nm. It is shown that the most intense plasmon absorption occurs in the wavelength range from 550 to 750 nm. A further increase in the thickness of metal coating decreases sample transparency in the studied range and does not affect the intensity of plasmon absorption and scattering.
Calorical properties of equiatomic alloy of rubidium-bismuth system in the temperature range 293–1175 K
Authors: Stankus S V , Savchenko I V , Yatsuk O S
Published: November 2019

The caloric properties of the Rb50Bi50 alloy were experimentally investigated in the temperature range 432.6-1176.8 K with the errors of 1.3% for enthalpy and 0.4% for heat capacity. The enthalpy change on melting was 8844 J mol-1. It is shown that the heat capacity of the melt decreases linearly with overheating above the liquidus and significantly exceeds the heat capacity of the ideal solution. Tables of recommended values of caloric properties over the range from 298.15 K to 1175 K were developed.
Studying the thermophysical and physicochemical properties of solutions of boric acid for emergency core cooling of WWER
Authors: Sahipgareev A R , Morozov A V
Published: November 2019

The results of experimental research of physicochemical (degree of acidity - pH) properties of aqueous solutions of boric acid are presented in this paper. A review of available literature data about the influence of properties of boric acid solutions on heat removal from the reactor core is given. It has been established that the available information is very general in nature and does not cover the entire range of parameters (temperature, pressure, acid concentration) characteristic of a possible emergency situation at NPPs with a WWER reactor. Experimental techniques and test facilities for research are described. The experimental data of the pH of aqueous solutions of boric acid in range of the concentration (5-100 g kg-1 H2O) and temperature (25-50 °C) are received. The approximating dependence for the degree of acidity of aqueous solutions of boric acid has been obtained.
Room temperature testing of PLA plastics
Authors: Vendland L E , Volkov-Muzylev V V , Demidov A N , Borisov Yu A
Published: November 2019

Polylactide plastic (PLA) prototypes are studied by means of additive technology to determine their strength properties in case of tension along the grain. In this article, testing of PLA and its compound PLA HP was carried out. Mechanical properties (yield limit, Poisson’s ratio, Young’s modulus) are determined. Analysis of results related to comparison of PLA and PLA HP was realized. Plastic is also studied using microscope for determination of adhesion influence on strength characteristics.
Three-dimensional modeling of the viscous fluid flow and the dynamics of dispersed systems in microstructures using the boundary element method
Authors: Abramova O A , Pityuk Yu A , Gimadeev A V , Iskandarov A I
Published: November 2019

Direct simulation of viscous fluid flow and dispersed flow at low Reynolds numbers in microstructures with complex geometry is needed for a wide range of industrial applications associated with the porous materials. The numerical approach is based on the boundary element method (BEM) for 3D problems accelerated both via an advanced scalable algorithm (FMM), and via utilization of a heterogeneous computing architecture (multicore CPUs and graphics processors). This enables direct large scale simulations on a personal workstation, which are confirmed by demo computations. In present work, the hydrodynamic flow of viscous liquid around the rigid structures with various configurations is studied. Also, the numerical approach is successfully applied for modeling the dynamics of deformable dispersed inclusions in the flow around microstructures. The results of the research may be used for the solution of problems related to microfluidic device construction, the theory of the composite materials production, and are of interest for computational hydrodynamics as a whole.
Experimental investigation of laminar forced convection of nanofluid in heat exchange equipment
Authors: Guzei D V , Minakov A V , Pryazhnikov M I
Published: November 2019

The laminar forced convection in a recuperative heat exchanger operating with nanofluids with MgO nanoparticles was investigated experimentally. In the experiments, nanoparticle concentration varied in the range from 2.5 to 12 wt. %. The nanoparticle size equalled 50 nm. The viscosity and thermal conductivity coefficients of the nanosuspensions were experimentally determined. The dependence of the average heat transfer coefficient and pressure drop on the Reynolds number for nanofluids was obtained.
Comparison of the forecasting results of Black Sea surface temperature obtained in the FSBSI MHI and Copernicus marine environment monitoring service
Authors: Kholod A L , Ratner Yu B , Ivanchick M V
Published: November 2019

The paper considers the matters of numerical modelling and forecast estimation accu-racy of sea surface temperature in the two monitoring and forecasting centers of the Black Sea – in Federal State Budget Scientific Institution «Marine Hydrophysical Institute of RAS» (FSBSI MHI) and Copernicus marine environment monitoring service. The CTD (Conductivity Temper-ature Depth) profiling data of in situ measurements from research vessel “Professor Vod-yanitskiy” were used to solve the problem. Spatial and temporal mismatch between the model data and in situ measurements was eliminated to form a joint sample of these two data sources. Comparison was performed for the time period from October 2017 to September 2018 and showed that the forecasting results of sea water temperature in FSBSI MHI are more reliable than in Copernicus marine service for all forecast terms.
Structure and properties of sintered Al-Cr-Zr alloy
Authors: Agureev L E , Savushkina S V , Laptev I N , Ivanov A V
Published: November 2019

Aluminum alloy Al-Cr-Zr was obtained by mechanical alloying and spark plasma sintering. The structure, tensile strength, and elastic properties at different chromium contents in the alloy were studied. The best properties both at room and at elevated temperature were shown by Al-0.5% Cr-0.3% Zr alloy samples (Young’s modulus ∼65 GPa, tensile strength ∼358 MPa). An increase in the Cr content in the composite to 1% leads to the formation of large chromium-containing inclusions (possibly coarse intermetallic compounds) along the grain boundaries of the alloy, which impairs the mechanical properties of the material.
Surface nanostructure evolution in carbon fiber under ion-induced corrugation
Authors: Andrianova N N , Borisov A M , Makunin A V , Mashkova E S , Ovchinnikov M A
Published: November 2019

The results of experimental study of the morphology evolution of carbon fiber VMN-4 based on PAN fiber depending on 30 keV Ar+ irradiation with exponential fluence decrease from center to periphery of ion beam spot on the target are presented and discussed. Scanning electron microscopy show a strong influence of ion fluence on the morphology, expressed by the transformation of nanoscale conical elements in a submicron corrugated structure.
Increasing the strength of diffusion welded joint silicon-copper: criteria of choice of an interlayer
Authors: Barabanova O A , Sapozhnikov S Z , Salmin P A , Nabatchikov S V
Published: November 2019

The issues of increasing the strength of the silicon-copper welded joint are considered and the criteria for choosing intermediate layers are formulated.
Anodic plasma-electrolyte modification of Fe and Ti-based alloys
Authors: Belkin V S , Krit B L , Morozova N V , Ludin V B , Peretyagin P Yu , Suminov I V , Apelfeld A V , Bentseva E A
Published: November 2019

The anodic plasma-electrolyte modification of titanium alloy VT1-0 and low-carbon steel 20 for improvement their properties was carried out in nitrogen- and boronitrogen-containing electrolytes, respectively. Tribological and corrosion-protective properties of formed surface layers was investigated. The data of technical tests showing increase in the operational life of threaded fastening pair subjected toto plasma-electrolyte boronitriding are presented.
Structural features of titanium, aluminum and magnesium alloys with rare earth elements
Authors: Betsofen S Ya , Skvortsova S V , Grushin I A
Published: November 2019

The influence of rare earth elements (REE) on titanium, aluminum and magnesium, as well as doping systems based on them, is considered. The general regularities of REE influence on the mentioned titanium, aluminum and magnesium are revealed.
Effect of laser heat treatment on structure and wear resistance of cobalt stellite
Authors: Furman E L , Usoltsev E A , Bakhteev I S , Furman I E , Shak A V
Published: November 2019

The structure and wear resistance of Stellite 6 alloy were studied before and after laser heat treatment. A significant refinement of the microstructure after the heat treatment is noted, the hardness the alloy changed slightly. An increase of wear resistance in shock-abrasive wear at angles of attack of 60-90° as well as metal-to-metal wear with presence of an abrasive layer is shown.
Criteria approach in the sphere of manufacturing of composite materials reinforced by particles at multicycle rolling
Authors: Galkin V I , Paltievich A R , Galkin E V
Published: November 2019

The article is devoted to considering the possibility of application of criteria system for the definition of parameters of technological process of manufacturing of composite materials reinforced by particles while multicycle rolling.
Study of the bias voltage influence on the structure, texture and residual stresses in Ta coatings deposited on a copper substrate of inverted magnetron
Authors: Lenkovets A S , Lozovan A A , Betsofen S Ya , Bespalov A V , Grushin I A , Ivanov N A
Published: November 2019

The results of the study of the bias voltage effect on the structure, texture and residual stresses of Ta-coatings deposited using an inverted magnetron on a copper substrate are presented. It is shown that variations in residual stresses are non-monotonic, which is determined by the complex effect of the bias voltage on the process temperature, which affects both the formation of mechanical and thermal stresses and their partial relaxation.
Study of mechanical properties of rapidly quenched fiber from orthorombic alloy based on Ti2AlNb
Authors: Pozhoga O Z , Serov M M , Yaroshenko A S , Senkevich K S
Published: November 2019

The mechanical properties of a rapidly quenched Ti2AlNb-based alloy obtained by extraction of a hanging melt drop in the initial state and after heat treatment are investigated. It is stated that the rapidly quenched alloy has low tensile elongation, high strength and hardness, and a mechanism of brittle fracture during deformation. Heat treatment allows increasing the value of tensile elongation, reduces hardness, and results in tough fracture during deformation.
Thermal relaxation of residual stresses, arising in heat-resistant materials after application of laser shock processing technology
Authors: Pugachev M S , Sakhvadze G Zh
Published: November 2019

The study of thermal relaxation of residual stresses in heat-resistant steel 37Kh12N8G8MFB (GH2036) after the application of laser shock processing technology and subjected to annealing at temperatures up to 650°C. For estimating residual stresses and their relaxation from the action of high temperature a calculation model has been proposed. The high efficiency of the proposed technology for hardening the surface layers of thermally loaded material was shown.
A State of the Art Review on Modelling Work Carried Out During Friction Stir Welding
Authors: Kumar Singh Manish , Kumar Porwal Rajesh , Mishra Sanjay
Published: November 2019

Welding of soft materials like aluminium, copper by fusion welding process is not achievable due to the generation of defects. These materials have a wide area of industrial applications. Therefore, their welding is one of the most challenging tasks in the joining industries. Since welding is used to join two materials or parts of materials of similar or dissimilar nature, therefore, the repudiation of the welded product due to poor weld quality is not acceptable in the modern joining industries. Friction stir welding can minimize these defects because in this process there is no melting of workpiece occurs. In the past, many researchers have examined a number of approaches to enhance the weld joint properties. The observational and notional analysis shows weld joint quality can be enhanced remarkably with the appropriate choice of process parameters. This article analyses the research work accomplished by various researchers in the field of modelling of the friction stir welding operation.
Dry sliding wear behavior of LD slag filled epoxy composites using Experimental Design
Authors: Ranjan Pati Pravat , Satapathy Alok
Published: November 2019

This article reports the fabrication and investigation of sliding wear properties of Linz-Donawitz (LD) slag reinforced epoxy composites. Hand lay-up technique is used for composite fabrication. LD slag is varied from 0 to 30% by weight and sliding wear tests are performed. The sliding wear performance of these composites is evaluated at various sliding velocities and normal loads. It is found that the incorporation of increased LD slag content resulted in significant enhancement in sliding wear resistance. This work also shows that LD slag content and sliding velocity are the most influencing factors as far as the minimization of specific wear rate is concerned.
A contribution concerning trends in modelling of Wire-micro EDM of Titanium alloys- A review
Authors: Porwal Rajesh , Maurya Ranu
Published: November 2019

The era is shifting towards the manufacturing idea of converting raw form of material into finalized part in minimum step and lesser machining operation. Manufacturing processes like 3D printing and additive manufacturing are achieving the criteria but they requires high capital investment and are sophisticated in its operation which need next to zero possibility of error. Alloying of materials yield high derivative properties like hardness, temperature resistance and extreme strength to weight ratio like in Titanium, Nickel and their alloys and super alloys. Specialized feature at micro level, complex and intricate geometries in the part are difficult to produce via traditional machining processes than non-contact machining process at cost effectiveness. This paper reviews the modelling related studies done in the processing of Titanium alloys through Wire-micro electrical discharge machining (Wire-μEDM) process. Most of the research done in the Wire EDM domain, experimented with the wire of copper and brass with diameter range in microns, thus resulting micro-machining phenomenon. Since Ti alloys find the most of the applications in field of aerospace, automobile, nano tech due to excellent performance at elevated temperature and pressure, than other alloying materials. The summarized should provide an overview on modelling techniques used by the re-searchers for measuring and predicting the parametric values for the optimization of WEDM process.
Role of microstructure on the degradation behaviour of friction stir processed AZ series Mg alloys assessed in simulated physiological solutions
Authors: Kondaiah V V , Vasu Ch , Dumpala Ravikumar , Ratna Sunil B
Published: November 2019

In the current work, pure Mg and two Mg alloys (AZ31 and AZ91) were selected and processed by friction stir processing (FSP). After FSP, the effect of microstructure and the corroding environment on the degradation behaviour of processed and unprocessed materials in two different solutions (0.9M NaCl and Ringer’s solution) by immersion method. The samples after immersion were characterized by X-Ray diffraction (XRD) method and electron microscopy. Interestingly, corrosion rate of FSPed samples was observed as decreased compared with unprocessed condition when immersed in Ringer’s solu-tion. On contrary, the corrosion rate of FSPed samples was noticed as increased compared with unprocessed condition when immersed in 0.9M NaCl solution. The results strongly suggest that the effect of smaller grain size and the ion concentration of the simulated physiological solution have a significant influence on the degradation behaviour of Mg alloys which must be considered while developing Mg based biodegradable implant materials
Experimental investigation into Micro Ultrasonic Machining of Quartz
Authors: Kumar S , Doloi B , Bhattacharyya B
Published: November 2019

Quartz has been broadly applied in industries including electronics, optics, micro electromechanical system (MEMS), biomedical. Micro ultrasonic machining (Micro USM), is a non traditional micro machining technique, extensively used to produce micro features and parts on quartz, silicon, ceramics and glass. A micro tool of stainless steel having diameter 330µm has been develop for generating micro hole on quartz. Experiments have been done by using different types of abrasives like boron carbide, silicon carbide and aluminum oxide of average grain size 14 µm. Experiments have been performed under different parametric setting of tool feed rate and power rating. The range of tool feed rate is 0.8 to 1.1 mm/min. The range of power rating is 200 to 500 W. Micro hole has been generated on quartz. Overcut and taper angle has been considered as response of micro ultrasonic drilling. In the present research effect of tool feed rate and power rating on taper angle and overcut has been investigated while using different type of abrasives.
Wear behaviour of Al-SiC metal matrix composite under lubricated environment
Authors: Mondal Samar , Kumar Barman Tapan , Sahoo Prasanta
Published: November 2019

The present study investigates the wear behaviour of silicon carbide based aluminium metal matrix composite under lubricated environment. The composite reinforced with 2.5% SiC by weight was prepared through stir casting method. The experiments were conducted on a pin on disc type tribotester under lubricated condition using five levels of load and sliding velocity varying from 10 N to 90 N and 0.26 m/s to 0.78 m/s respectively. The experiments were carried out based on the combination available in Taguchi’s L25 orthogonal array (OA). Then the effect of design factors on wear rate was investigated. Taguchi’s method was implemented to find the optimal parameter combination. Statistical analysis was made to find out the relative influence of design factors on wear rate. Finally, field emission scanning electron microscopy (FESEM) was carried out to determine the wear mechanisms.
State of the Art on Laser Assisted Electrochemical Machining
Authors: Mandal Indranil , Doloi B
Published: November 2019

Laser Assisted Electrochemical Machining (LAECM) has proven its advantages and applications over almost all the range of conductive materials. It offers its adroitness to generate simple shapes to complex shapes from macro to micro machining. Laser assisted ECM is a hybrid approach of machining which has been manifested to obtain improved results in terms of surface integrity, thermal damage, geometrical tolerance and material removal rate. Laser assisted Electrochemical Machining (LAECM) is a hybrid machining process in which laser enhances the electrochemical dissolution process by increasing the temperature and hence the current density of the electrolyte. Laser helps to remove material from the particular machining zone and stray machining effect is reduced and thus improves the precision and efficiency of LAECM, also productivity. New route of laser assisted hybrid machining processes has been built in the past decade by few of the researchers to reduce the intrinsic problems of ECM. This paper reviews on the investigation into LAECM process. The article also highlights various possibilities and applications of LAECM process. There are various challenges in LAECM process which have been also discussed in this paper.
Modeling and optimization of cutting parameters during machining of ZrO2 filled MMC
Authors: Mahanta T , Satpathy M P , Swain A
Published: November 2019

In the era of composites and ceramics, reinforced metal matrix composites have paved its way to many engineering fields due to its superior mechanical and thermal properties. Zirconia (ZrO2) is one such most researched ceramics, which leads to excellent bond strength, grain refinement, and improved tribological aspects of the composite. To simplify the post mold machining of such new composites, the present work emphasizes on the prediction of cutting force for different composition of ZrO2 in an Aluminum metal matrix composite reinforced with SiCp and Graphite. The purpose is to streamline the complex analysis of induced cutting force during turning with quantifiable machining parameters for the developed composite. The influence of two machining parameters such as depth of cut and feed rate are analyzed with an increase in ZrO2%. For the better prediction of the cutting force, the artificial intelligence techniques like adaptive neuro-fuzzy interface system (ANFIS) backed by a heuristic genetic algorithm (GA) is employed. The comparison between the predicted model values with the experiment results is exhibited ±1% error having R-square value 0.9927. The interaction plot and soft computing model stood in equal agreement that with the rise in both depth of cut and feed rate, the cutting force value decreases. Again for an increase in ZrO2% and feed rate, a definite increase in cutting force is observed. The effect of an increase in ZrO2% in the composite over the machining parameter is suggested through the main effect plot, which stands in equal agreement with the GA model.
About the design, development of an automated SMAW setup and the weldment analysis in air and wet working environment
Authors: Reyaz S B , Parida S K
Published: November 2019

The aim of this research is to design and to develop a computer controlled low-cost underwater welding setup for shielded metal arc welding (SMAW) process to work in dry as well as in wet welding conditions. Investigations of the microstructure and mechanical properties of the welded joints made from AISI 1010 steel plates using this setup, in air, tap water, and saltwater working environment, respectively, have been carried out. Weld bead geometry, microstructure, ultimate tensile strength (UTS), ductility, impact strength and Vickers microhardness of air and wet welded joints have been characterized and compared. The general weld bead size is quite dissimilar for air, tap water and salt water welded joints. The tap water and salt water welds seem to be wider with a slightly higher weld penetration with lower reinforcement. The maximum value of the the average UTS of the welded sample as per ASTM was 485.74 MPa. The experiments showed that the maximum percentage of elongation of samples welded in different conditions is 8.06 % and the maximum value of the average impact strength of 25.64 J was found in case of air welds. The microhardness value of fusion zone (FZ) was greater than base metal (BM) in all the welded samples. It was noted maximum up to 310.8 HV10 at coarse grain heat affected zone (CGHAZ) of tap water welds. The mechanical properties of the salt water welds deteriorated due to porosity, slag inclusion, undercut, increase in hydrogen and oxygen content in the welds.
Optimization and Modeling Approaches in Machining of High Temperature Super Alloy Steels: An Overview
Authors: Ranjan Panigrahi Ramai , Kumar Ramanuj , Panda Amlana , Kumar Sahoo Ashok
Published: November 2019

Over the years, the need for appropriate selection and implementation of optimal cutting conditions has been a major issue among the metal cutting researchers. The implementations of multicriteria decision tools in modern machining were highly valued due to a better capacity to select the optimum parametric combinations. In the optimization method, an objective function is developed with or without mathematical model whereas a mathematical equation based model is formulated, based on input and response parameter in modeling technique to obtain the best efficient cutting environment. In this review paper, various modeling techniques like artificial neural networks, fuzzy modeling, and regression modeling analysis along with Taguchi technique, genetic algorithm and response methodology for application in turning have been focused. Moreover, some new investigations and observations are focused on the advancement of new strategies like (PSO) Particle Swarm Optimization, as it is simple and easy to utilize. In addition, multi-objective optimization is an essentially needed when a single optimization technique can’t produce a satisfactory result. This overview states the significance of optimization and modeling technique in the field of high-temperature material and discloses the critical issues related to it.
Analysis of Thin-Walled Bars Stress State with an Open Section
Authors: Nguyen Trong-Chuc , Tang Van-Lam , Nguyen Thanh-Sang , Nguyen Quy-Thanh , Huynh Trong-Phuoc
Published: November 2019

The analysis of the thin-walled structural problem is still a topic of interest and research by many scientists with many different solutions and theories. This paper presents the occurrence of stress components on the thin-walled bars with open sections. Vlasov’s theory has been applied to analyze the stress state on thin rods. At the same time, using the Midas civil structure calculation program based on finite element principle for structural analysis with taking into account sectional warping. From the results obtained by the finite element method, it is necessary to select and design carefully for thin-walled bars.
Significant Influence of Information Technology on the Use of Modern Accounting Software
Authors: Utami N , Yulianto H D
Published: November 2019

The purposes of this research are to describe, analysis, and determine the level of effectiveness and efficiency through information technology on modern accounting software. In this case the researcher focuses on the use of accounting applications using the accurate software. This study used a method of description and interviews to direct informants, where the population taken in this study are S1 (bachelor degree) and SMK (vocational high school) Accounting students. The results of this study indicate that the use of Information Technology (IT) has a significant influence on the company. Modern accounting software that uses a computerized system helps manage financial statements from the stage of recording transactions, classification, summarizing and then preparing it in the form of financial statements needed by an accountant to notify those in need in the company. With the level of technological progress is so fast, pushing companies to use modern accounting software that is compatible in the network and multi-user to improve the effectiveness of company performance. Accurate accounting software with complete features and ease of operation is one solution to improve accuracy, functional improvement, and shorten the time spent preparing and presenting financial statements.
Control of Electronic Devices Using Smartphone-Based Voice Identification
Authors: Sriwati S , Eruinsyah E , Karim S , Rahman F
Published: November 2019

This study aims to design the control system of an electronic device using voice identification-based smartphones generating electronic device control system. It optimizes the smartphone functions as a mobile phone than as a means of communication. The method used using the technique of direct observation by observing the success of the software AMR voice in identifying sound. In this design process smartphone as a sound receiver module, arduino as a controller, Bluetooth module as the sender and recipient of the data, and the relay as a contact breaker and connecting the electric current, as the output of LCD used to display information on whether the results of voice identification is correct or incorrect. Research tools electronic control device can control electronic devices such as fans, lamps and others depending on what is to be controlled. From the test results it can be concluded that the system control electronic devices by using voice identification-based smartphone that has been designed is divided into several parts, namely the Bluetooth module HC-05, arduino uno, relays and software AMR voice as a controller that has been tested to work and function properly.
Society 5.0: Optimization of Socio-Technical System in Poverty Reduction
Authors: Gustiana I , Wahyuni W , Hasti N
Published: November 2019

The purpose of this study is to design a digital platform design as one solution to solving poverty problems that exist in the community with various causes. Poverty is a complex problem caused by multidimensionality. The cause of poverty is not only a problem of economic inequality but also caused by social problems, education, and lack of access to communicate or communication. The methodology used in this research is Sociotechnical System (STS), STS analysis used six attributes, namely goals, people, buildings/infrastructure, technology, culture, and processes/procedures. This approach (STS) analyzes approaches based on social problems and technical problems. The final results of this study created a digital platform design as a public space to capture community participation in order to care and want to share with poor communities in the form of entrepreneurship training groups (UKM). This technology becomes a tool to help in educating society, not a rival of the community in accordance with the principles of society 5.0.
Implementation of User Centered Design Method in Designing Android-based Journal Reminder Application
Authors: Afrianto I , Guntara R G
Published: November 2019

The main objective of this study was to implement UCD in designing an Android-based journal reminder application to determine the user’s needs for functionality and application interface. This study uses Data Collection Method and Application Design using UCD. To find out the result of the implementation UCD, measurements are used at the level of acceptance and support of prospective users by making a data collection instrument in the form of a questionnaire according to the usability testing framework using the Likert scale to calculate the variables. The results of testing of prospective users indicate that 84% of prospective users state that the functionality and interface design of the android-based journal reminder application can be accepted and can be developed in the next stage. This is concluded from the results of functional and interface design evaluations through questionnaires using a Linkert scale which shows that the design built is at a GOOD interval, which means that the functional design and interface of the journal reminder application can be accepted and can proceed to the next stage. However, in order to improve the accuracy of the development of the journal reminder applications, it is necessary to make a propototype based on the results of UCD modeling and design.
Influence of Financial Technology on National Financial Institutions
Authors: Purnomo H , Khalda S
Published: November 2019

The purpose of this paper is to analyze whether the role of FinTech (Financial Technology) currently has a good or bad effect on national financial institutions (banking). This Study used descriptive methods and gathering information / data via the internet. FinTech was created to implement technology in the financial sector. The results of his research, namely FinTech, could hamper the development of banking, but could also be an opportunity for the banking sector itself. From these results, it was said that banks could be digitized because of the encouragement of FinTech. This is due to FinTech taking a large part of the banking industry’s market share. Of course, FinTech can be a threat as well as an opportunity for national financial institutions.
The Ability Scoring Model of Software Support Engineers Based on Technical and Communication Skills
Authors: Seta P M , Putra Y H
Published: November 2019

This study aims to determine the ability of a software support engineer both technical abilities and communication skills. To achieve these objectives, the research begins by determining questions through literature studies and interviews then validate these questions by involving 2 communication experts, 10 support managers, and 30 software support engineers from 3 IT companies ranging from a small business company, medium business company, and large business company. Validity testing is done through filling out a questionnaire to the support manager, communication expert and application support with weighting using a Likert scale. With this research, we succeed in creating the scoring model with a value of more than 90% confidence level to assess the ability of a software support engineer. This assessment model contains 5 questions about database capabilities, 5 questions about basic algorithms, and 10 questions about communication skills. Therefore, this scoring model has been able to represent the real capabilities of a software support engineer.
Toll Road Roughness Index Forecasting with Combination Grey Forecasting Model and Similarity Spatial Data
Authors: Nurhadiansyah R , Hadiana A
Published: November 2019

The International Roughness Index (IRI) is used by toll road operators throughout the world as a main standard to quantify road surface roughness. IRI are performed to monitor the pavement conditions to evaluate pavements quality, and is a main supporting factor of safety and driving comfort. In Indonesian toll roads, IRI must be measured by annually with determinate value is ≤ 4 m/km (unit of measurement). The purpose of this research is IRI forecasting on the Pondok Aren - Serpong toll road uses limited data history, testing results in 2013, 2015, 2016 and 2017 with Grey Forecasting Model (GM) method. Because of unavailability of testing results in 2014, this research tried to improve forecasting accuracy using the Similarity Spatial Data (SSD), is the IRI testing result on toll road that have similar characteristics with Pondok Aren - Serpong toll road. The final goal of this research is to determine how much influence the use of SSD in increasing the GM forecasting accuracy.
Designing Information System Recruitment Professional Gamers Web-Based
Authors: Priladha A , Setiyadi A
Published: November 2019

The purpose of this research is to find developing professional gamers in the world of eSport. The background of this research is because e-sport in the world is proliferating in all corners of the world, but there is not yet a place to accommodate these professional gamers to be seen by eSport management in the world. This application has good potential to be implemented because it can produce a new high-quality player. The method used in this study is descriptive method to present a complete picture of the situation related to several variables of the situation being examined. The results of this study are to design information systems web-based recruitment of professional gamers that can be used to assist and facilitate the process of professional gamer’s recruitment.
Influence of Information Technology in Attracting Tourist Interest
Authors: Adigraha E M , Juanda
Published: November 2019

The purpose of this study was to determine the role of social media in attracting visitors’ attention about tourism in the West Bandung Regency area as well as to uncover any tourist attractions in the West Bandung Regency area that many people do not yet know. The research method used here was a descriptive method. The result of this study is that social media has the power to attract the interest of many people to visit a place. By monitoring social media about tourist attractions, it will attract potential tourists to visit. This is supported by the growing role of social media so that it can be utilized by providing information about the advantages of tourism in West Bandung Regency. Of course, with the increasing number of people who have social media accounts, then through these media people will be able to get more information, one of which is information about tourist areas for them to visit.
C4.5 Classification Algorithm Based On Particle Swarm Optimization To Determine The Delay Order Production Pattern
Authors: Setiawan H , Mukiman K , Satria  , Hanadwiputra S , Suwarno A
Published: November 2019

Manufacturing companies engaged in the production of cosmetic products and herbal products on a national and international scale, this company is required to be able to carry out production planning by using classification methods in determining the pattern of delay in production orders for the C4.5 classification algorithm based on Particle Swarm Optimization. The research method used in this experiment is the Cross Industry Standard Model for Data Mining (CRISP-DM). From the results of the C4.5 algorithm optimization analysis with particle swarm optimization (PSO), it can be concluded that the accuracy value obtained from the PSO-based C4.5 algorithm model is 82.52%. This is better than the C4.5 algorithm model which produces an accuracy value of 80.17%. The Difference of 0.033 with the details of the C4.5. Algorithm producing an AUC value of 0.855 with a diagnosis of Good Classification. The results of the optimization analysis of the C4.5 algorithm with PSO, the pattern of delay that is formed is that the production status is the status that causes the most delay in production orders. then followed by the status of waiting for pre-production and administrative status. the emerging status must be a correction and attention so that management becomes better.
Designing Indonesian Geographic Application
Authors: Wahyuni W , Gustiana I
Published: November 2019

Assesment of geogaphic concept and skills confirm the failure of our educational system to provide students with an adequate understanding of geography. Information regarding Indonesian geographic is highly need by many people especially the users, thus they are able to understand the accurate placement of a subject which is related to geography. This aplication requires regional data to be search by the user. This research used a descriptive method by collecting data in detail, in-depth and actual. The method is adapted from the knowledge and facts found in the field. Therefore, the aim of this research can be achieved; furthermore, this research is able to describe the position of an object systematically. The designed application is expected to help the users understand the location of an object or a place that they want to find and help the user to find detailed information about the area which include the name of the province, name of city and other information.
Statistical and Interpretative Analyses for Testing Customer Trust Questionnaires on IT Governance
Authors: Setyadi R , Rahman A B A , Subiyakto A
Published: November 2019

The purpose of the research is testing customer trust questionnaires on ITG trust through statistical and interpretative analyses. ITG questionnaire data obtained will be analyzed using SMART PLS 3.28 that included testing a formative construction and causal modeling capabilities. The result of this research is interpretive data analyses to confirm the results of the statistical analysis in the testing questionnaire of ITG trust. The results of this study are expected to be a literature or reference for stakeholder in school who are running their ITG and actually can give other solution for ITG in high school institution (HSI). The school with the media-based on ITG trust model has Effectiveness, Productivity, Efficiency, and increasing the management quality in a sustainable manner and resulting high performance achievement.
Student Data Management Information System Using the Zachman Framework
Authors: Nasrulloh Muhammad Yasin , Putra Yefry Handoko
Published: November 2019

The purpose of this study is to find out student data management quickly and accurately which can produce information systems for use by schools, students, and stakeholders related to student data management. In the case of improper student data management, it can cause errors in decision making such as payments, student attendance and progress assessment to students. Method used in this study was qualitative technique and literature studies. Interview was conducted to support data analysis. The result showed that Zachman framework able to overcome the existing information system problems. With many perspectives on the Zachman architecture method in this study is expected to provide a significant solution for managing student data management in schools by preparing an integrated system in managing student data and developing data in the future
Designing A Geographical Information System For Houses Not Feasible As Supporters Of Policy
Authors: Hardiyana B , Wibawa JC
Published: November 2019

The implementation of social welfare development programs in developing countries is generally focused on the empowerment program of the poor, which is more nuanced in a participatory approach involving the community, business and government. empowerment is considered appropriate to be one of the policy choices in the development of social welfare today. The development of social welfare based on the principle of empowerment is intended that in the handling of the poor it must be done through increasing the capacity of human resources to increase independence (Law Number 13 of 2011). Regional development has an impact on national development. Poverty reduction policies realized through community empowerment programs have become the main agenda and priori development in Baleendah Subdistrict, especially Rancamanyar Village. One of the poverty alleviation programs through community empowerment carried out in Rancamanyar Village is the Housing Assistance Program for uninhabitable houses. Various local government efforts to reduce the number of uninhabitable houses are still considered uneven. With the limited management and processing of survey data in the regions, it is one of the factors that do not help the existing policies. With the construction of a geographic information system for uninhabitable homes, one of the efforts that must be taken by the local government in order to support and assist in making decisions for uninhabitable houses is to conduct geographical analysis and mapping of uninhabitable houses in Rancamanyar Village, so that help is not wrong target.
Evaluating Website Repeat Usage Using Webqual 4.0: a Guide for E-Commerce Business
Authors: Sutisna M , Prayogo A D , Sarah I S
Published: November 2019

The research aims to examine the repeated use of e-commerce websites by analyzing the quality of the website using webqual 4.0, which consists of quality of use, information, and service interactions. The research method used is a quantitative method using a questionnaire of 200 respondents in Bandung and asked to fill out an online questionnaire. The data obtained were analyzed using regression analysis. Results The findings from the study are that this implies the effect of high quality web sites on potential repeat usage. Therefore, this research urges business owners to interact with visitors using website tools, in addition to improving the usability and quality of website information. Increasing the interaction of website visitors will make the shopping experience more interesting. Engagement means that visitors’ interests are supported by relevant and useful content or interactions. The more engaged your visitors are, the better the potential for conversions from website visitors to customers.