bluuebunny/crossref_metadata_2025_split huggingface dataset:
Socio-technical analysis of natural rubber plantation in North Sumatera: possibilities for sustaining supply
Authors: Haikal Sitepu Muhammad , McKay Alison 
Published: June 2020

Abstract
Natural rubber is an important commodity for countries in South East Asia region such as Indonesia, Thailand, and Malaysia. Economic in these countries are supported by exporting this commodity. Many citizens of these countries depend their life on income from a natural rubber plantation. Moreover, natural rubber is a key material to produce important products such as tire, health and sports equipment. For this reason, it is necessary to sustain the supply from natural rubber plantation. To sustain the supply, technical aspects such as cultivation techniques, replanting techniques, latex processing techniques and social aspects such as rubber smallholder behavior, supplier behavior need to maintain. This research conducts a socio-technical analysis of natural rubber plantation in North Sumatera. This research has an objective to investigate the ability of natural rubber plantation in North Sumatera to sustain the natural rubber supplies. A combination of socio-technical framework and SWOT (Strength, Weakness, Opportunity, and Threat) is used to analyze the existing condition of natural rubber plantation in North Sumatera. The result indicated that there were social, technical and external factors that reduce the ability to sustain the supply of natural rubber.
Socio technical analysis of palm oil plantation in North Sumatera Indonesia: making sustainable supply
Authors: Haikal Sitepu Muhammad , Rahim Matondang Abdul , Tryana Sembiring Meilita , Nur Lubis Wadiah 
Published: June 2020

Abstract
This paper has an aim to present a socio-technical analysis of palm oil plantation in North Sumatera Indonesia. This analysis is beneficial to support stakeholders in the Indonesian palm oil industry in designing strategic plans for making sustainable supply of palm oil. North Sumatera province has large areas of palm oil plantation and acts as one of important crude palm oil producer for Indonesia. Palm oil industry contributes to the economic and to the life of citizen in this province. To sustain supplies from palm oil plantations, social and technical aspects are necessary to maintain. Social aspects such as the behaviour of palm oil smallholders in cultivating their plantations and technical aspects such as availability of technology to support palm oil cultivation influence the supplies from plantations. Socio-Technical Framework and SWOT (Strength, Weakness, Opportunity, and Threat) were used to analyze the existing condition of palm oil plantation in North Sumatera Indonesia. To get supporting information, interviews with farmers, suppliers, palm oil researchers were conducted. The result indicates that there are several weaknesses and threats reducing the chance to sustain the supplies of palm oil.
ERP system implementation with accounting modules in national amil zakat institutions
Authors: Gantira Mira Intan , Lubis Muharman , Puspitasari Warih , Ridho Lubis Arif 
Published: June 2020

Abstract
Rumah Yatim is an authorized zakat institution in Indonesia with national-level task of collecting and distributing mandatory zakat to the eligible person fairly and evenly. Therefore, there are many issues that prevent zakat optimization such as lack of awareness to pay zakat, inaccessibility of required channel, disrupted of productive program and overlapping funds as the cause of incoordination. This study offers the system design in related to the accounting module to present the compliance and standards in order to convince relevant party and public eyes upon the credibility and reliability of zakat management. It was carried out by developing an Enterprise Resource Planning (ERP) system using the Odoo Quick Start method as the popular mechanism within small and medium enterprises (SMEs). The results of this study are an ERP system designed based on the customized Odoo module that has been aligned with the business processes and function within the institution. It has the purposes to make it easier and quicker for solving problem compare to the previous process in order to create effective and efficient management for the institution to carry out their agenda and activities based on meaningful and resourceful accounting performance.
Spare part supplier selection model using decision tree classification techniques: J48 Algorithm
Authors: Ishak Aulia , Wijaya Tommy 
Published: June 2020

Abstract
Spare parts are goods that consist of several components that form a single unit and have certain functions. To facilitate companies in selecting suppliers, a supplier selection model is needed to make it easier for companies to select suppliers and make it easier to see strategic directions to take several criteria from suppliers to achieve priorities. This research was conducted at a manufacturing company engaged in car spare parts with rubber raw materials. In this study the problems that occur are the difficulty of the company in selecting suppliers based on criteria that are in accordance with the company and the delay in the receipt of raw materials, and the lack of raw materials supplied from each supplier. This study aims to classify suppliers based on desired criteria by the company and to design a supplier selection model in the long term. The J48 algorithm is produced by a supplier selection model with 2 rule selection models to classify efficient suppliers and inefficient suppliers. The accuracy of the Decision Tree model is 90.8547%, the MAE error value is 0.1256. From the J48 algorithm the biggest gain is the criteria for quality, price, delivery, and warranty and complaint services.
Reducing waste with the lean manufacturing approach to improve process cycle efficiency
Authors: Erwin  , Siregar K , Anizar  , Sari R M , Syahputri K 
Published: June 2020

Abstract
In general the main fodder raw materials used in the process is the corn imports. Fodder dependence toward imported raw materials cause increased production costs and ultimately have an impact on the price of animal feed. To maintain the stability of the production costs, industry fodder must be able to maintain and increase efficiency in the production process. The efficiency of the production process can be improved by manage waste. The purpose of this research is to minimize waste that occurs in livestock feed production process and to improve the process cycle efficiency in animal feed products. It can be done with a lean approach. Lean principles can be expressed as a process of continual improvement by eliminate the waste contained in the value stream.Tthe results shows there are activities that are categorized as value added activity, necessary non-value added, and non-value added. Each activity consists of 11 activities for value added activity, 12 events for the necessary non-value added activity, and 3 activities for non-value added activity.The overall total time of 2434.4 minutes though the actual efficiency of 85.4%. The proposed improvements are being made to eliminate non value added activity is to use five Rev. The charts and tables with results in the form of her 5W1H, 3 activity contains the non value added activity. Through these improvements, the retrieved value process cycle efficiency improvement of 87.49% and increased by 2.09%.
Designing new pot design using Ansys steady state thermal to reach 215 ka pot technology
Authors: Gabriel Kristian Tarigan Ardyanta 
Published: June 2020

Abstract
In the present, Inalum has been operating D3-3, D5-1,D5-2 pot design in 196 kA line current and reach 250 ktpy production. Inalum has vision to reach production to 300 ktpy with one of strategy is designing new pot technology to reach 215 kA line current. Some simulation should be carried out before the application test is done using Ansys to observe thermal balance and material balance or with this case using the Steady State Thermal Analysis, Thermal Electric and Magnetohydrodynamic Analysis. Simulation with Steady State Thermal Analysis for new design is doing with some modification with pot lining material, shows new pot design has side ledge temperature higher than existing pot design D5-1. The result is also shown the side wall temperature of new pot design is lower than existing pot design D5-1 with the higher cathode bar temperature in new pot design.
Study of mobile communication performance by applying empirical models as radio communication channels in two bands
Authors: Pinem Maksum , Zulfin Muhammad 
Published: June 2020

Abstract
Handover is a facility needed to maintain the continuity of cellular communication services to users. The handover process is influenced by the signal strength received by the mobile station (MS). The condition of the radio propagation channel and the presence of the barrier will affect the signal strength received by the user. This paper investigates the relationship between the parameters of the Empirical radio propagation model and the parameters of cellular communication performance. From the results of the discussion it was found that there is a strong relationship between the antenna height and frequency parameters with the soft handover performance parameters. By increasing BS height and MS height, the characteristics of both radio link degradation and drop call rates will decrease, but conversely increase the characteristics of active set values. The rate of decline in characteristics of both the degradation of the radio link and the drop call will be greater with a lower working frequency. Conversely with a lower working frequency produces higher active set characteristics.
Prototype of wireless sensor network based on open industrial protocol: modbus
Authors: Tadeus D Y , Yuniarto  , Yuwono T 
Published: June 2020

Abstract
Wireless Sensor Network (WSN) is generally implemented using multiple sensor nodes located in remote locations or relatively far from the control room and monitoring. WSN conventionally has its own communication protocol architecture that requires a specific interface system in accordance with its application. The software used in WSN interface system development is very varied and requires deep knowledge of programming skills because generally the interface is built from scratch so it will be difficult for quick and wide implementation requirements. This research provides solutions to these problems through a new design that is alternatively different from conventional WSN. The main difference lies in the communication protocol used, namely the open industrial protocol: Modbus. Implementing this protocol on WSN will provide access to industry-standard interfaces to be used as a WSN interface system. The industry standard interface system does not requires any complicated programming skills because it has been provided by ready-to-use graphical components so project implementation can be executed more quickly and easily. The Wifi ESP8266 module is used as a wireless transceiver component on the node sensors embedded with Modbus TCP protocol over TCP/IP network protocol. Interface system is built using Microsoft Visual Studio Community version and AdvancedHMI as an integrated development environment. The prototype was built and tested in an environment temperature monitoring system.
Whatsapp addiction: dominant factors affecting communication
Authors: Naryoso A , Lailiyah N 
Published: June 2020

Abstract
WhatsApp has become the most favorite application in Indonesia. Many features in WhatsApp make users reluctant to switch to another application. Favorite features that make users fond of WhatsApp are voice calls, voice notes, and unlimited groups. While the main factor after analyzing using factor analysis, the dominant influence on dependence on WhatsApp is the relatively inexpensive communication costs and application features that facilitate communication.
Modeling of Ice Slurry Flow through Bend Pipe
Authors: Rawat K.S. , Verma A. , Uniyal A. , Gangwar H.P. , Pratihar A.K. 
Published: June 2020

Abstract
In this work, CFD Eulerian multiphase model with KTGFis used to investigate the flow behaviour of the ice slurry in 90° elbow bend pipe. The present model considered the particle-particle collisions along with particle-wall collisions. In the modeling of ice slurry flow various interfacial forces viz. drag force, lift force and turbulence dispersion force are considered. The solid phase viscosity is calculated as a sum of kinetic and collision viscosity component and the turbulence in the ice slurry flow is modeled by the per phase k-model. Simulation has been performed at velocity of 1 m/s, concentration of 10% and particle size of 0.25 mm for the bend radius ratios (R/r) of 2, 2.98 and 5.6. Apart from that, effect of particle size, velocity and concentration on solid particle distribution has also been investigated. Results show that, secondary flow is generated similar to single phase flow which influences the velocity, particle distribution and pressure drop.
A Short Review on Machining With Ultrasonic MQL Method
Authors: Katna Rahul , Agrawal Narayan , Suhaib M. 
Published: June 2020

Abstract
Cutting fluids are required in huge amount in the modern machining methods. Cutting fluids are needed for providing lubrication as well as cooling the workpiece during machining. Cutting fluids are made of mineral oils and have many drawbacks including many health hazards and environment impact. Various other methods of cutting fluid delivery are being tested in order to reduce the effects of cutting fluids in machining. One such method is minimum quantity lubrication. Many researchers have shown the effectiveness of MQL over the conventional flood method. However the MQL method has drawbacks in terms of heat carrying capacity. In order to increase the effectiveness of the MQL method many advanced methods are being tested for improving the cooling efficiency of the MQL method. One of the methods is ultrasonic method. This method is currently in nascent stages and is being researched upon as a viable alternative to the conventional MQL method. This paper describes this hybrid delivery method in machining.
Antioxidant properties of silver nanoparticles biosynthesized from methanolic leaf extract of Blighia sapida
Authors: Akintola AO , Kehinde BD , Ayoola PB , Adewoyin AG , Adedosu OT , Ajayi JF , Ogunsona SB 
Published: June 2020

AbstractSynthesis of nanoparticles by biological methods using microorganisms, enzymes or plant extracts has been suggested as possible ecofriendly alternative to chemical and physical methods which involve the use of harmful reducing agents. In the current study, silver nanoparticles (AgNPs) were synthesized by green approach from methanolic leaf extract ofBlighia sapida. The synthesized AgNPs were characterized by UV-visible (UV-vis) spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy and Scanning Electron Microscopy (SEM). The antioxidant activity was evaluated using DPPH radical scavenging assay, determination of total reductive potential, total phenolics content (TPC) and total flavonoids content (TFC) of the synthesized AgNPs. SEM analysis revealed that the size of the synthesized silver nanoparticles ranged from 50-70 nm with maximum UV-vis absorbance at 413 nm. DPPH radical scavenging activity, reducing power, total phenolic and total flavonoid contents of the synthesized AgNPs increased in a dose dependent manner as compared to ascorbic acid the standard reference used. This result confirmed thatBlighia sapidais a potential biomaterial for synthesizing AgNPs which can be exploited for its antioxidant activity.
Preliminary investigation of the surface activation of diposable screen printed carbon electrodes using synthesized gold nanoparticles
Authors: Fowotade S A , Yusof NA , Abdullaha J , Sulaiman Y 
Published: June 2020

AbstractGold nanoparticles, GNPs, are known to be the most stable metal nanoparticles. They exhibit many unique and interesting physical and optical properties with profound potentials for diverse applications. However, they are highly delimited in terms of size distribution. Different sizes of gold nanoparticles, synthesized through simple laboratory method, were characterized using zetasizer nano series particle size analyzer and ultraviolet-visible spectrophotometer. The synthesized gold nanoparticles were used to modify screen printed carbon electrodes and electrochemical characterization was conducted. The synthesized GNPs sizes range from 42.54-1730.00 nm. The 49.27 nm sized GNPs displayed the highest oxidative peak current in the cyclic voltammogram obtained. All the GNPs modified electrodes gave higher peak over the bare electrode. This implied that the GNP/SPCEs allowed the flow of current or offered least resistance to the flow of current as compared to bare/SPCE. The high peaks indicate successful oxidation process at the anode electrode of the electrochemical process. The present work showcased a simple approach of coating the surface of the disposable SPCEs with GNPs unlike other previously employed pathways. The work also showed that GNPs can successfully be assembled onto the surface of SPCE through simple dipping of the SPCE in the GNPs solution. In addition this approach is cheap, simple and environmentally friendly. The fabricated electrode, GNP/SPCE could be a promising electrode for future detections and determinations.
Green synthesis of silver nanoparticles from leaf extract of Tetrapleura tetraptera and its antimicrobial activity
Authors: Ogunsile B O , Seyinde D O , Salako B A 
Published: June 2020

Abstract
Plants have very high potential as alternative source of bio-reducing and capping agents in nanoparticles (NPs) synthesis. Silver nanoparticles (AgNPs) were synthesized from Tetrapleura tetraptera leaf extract. The UV-vis spectrophotometer was used to observe the formation of the NPs at various time intervals and ratios of leaf extract to AgNO3 solution. The properties of the AgNPs synthesized were characterized by FTIR and Scanning Electron Microscope (SEM) equipped with Energy Dispersive X-ray Spectroscopy (EDX). Antimicrobial activities of the AgNPs synthesized were evaluated against ten human pathogens using agar well diffusion method. The rate of formation of the AgNPs was shown to increase with respect to time and ratio of leaf extract to AgNO3 solution. The EDX result showed signal energy peak for silver atom at 3.0-3.8 KeV. The AgNPs was characterized with FTIR peaks around 3280, 1620, 1400 and 1040 cm−1 assigned to O-H, C=O, C–O–H and C-C groups respectively, as possible stabilizing and capping groups. The AgNPs showed maximum inhibitory activity against Staphylococcus aureus, Escherichia coli and Salmonella sp.
Engaging science diplomacy for nanotechnology development in Africa
Authors: Ezekiel I P 
Published: June 2020

Abstract
The concept of science diplomacy is gaining ground as a global strategy in addressing global concerns such as global peace, insecurity, climate change and environmental impact. This study reduces science diplomacy to an effective means for the strategic development of nanotechnology in Africa. African nations are currently not encouragingly close to the leading nations in nanotechnology, yet there seem to be extant diplomatic relationship with many of these forefront nations. African diplomats are state actors in science diplomacy to propose foreign policies that will meet the domestic demand for science and technology development in Africa, especially for emerging technologies like nanotechnology. The necessity of inclusion of competent scientists with diplomatic skills as members of the diplomatic corps is recommended here as one of the ways to develop nanotechnology in Africa. The scientist diplomats will function to foster international scientific collaborations, drive platforms for national research facility development and for non-state actors to thrive in their domestic nano-research. Scientifically informed foreign policies are presented here to have potentials to significantly assist Africa in developing nanotechnology and provide pathways for overcoming the numerous constraints to nanotechnology development in Africa. Critical areas of intervention include human capacity development, national nano-research laboratory facilities, platforms for institutional collaborations, post-graduate student training and robust exchange programs. These machineries also benefit independent individual researchers by leveraging on the international networks created by science attachés through science diplomacy.
Wind Tunnel Testing Verification Method for Flight Test Pilots Emergency Departure from Commercial Aircraft
Authors: Liu Yang 
Published: June 2020

Abstract
According to airworthiness regulations, the first or previous several commercial aircraft for flight test must be installed with an air emergency departure system to ensure that the members of the pilots safely escape from the aircraft in the event of an irretrievable flight emergency. Large-scale commercial aircraft mostly adopt the lower-single-wing and wing-hanging-engine configuration. Emergency departure channel is generally designed on the side or bottom of the front fuselage, when pilots had to leave the aircraft, who may hit the aircraft components, such as landing gear, engines and wings. Therefore, it must be verified whether the test pilot can safely leave the aircraft from the emergency exit during the aircraft design process. This paper introduces the method about how to verify the safety of test pilots though wind tunnel testing. The key of method is to measure the trajectory of pilot in wind tunnel by simulating conditions of flight and pilot emergency departure. The method illustrated can be used for design and verification of emergency departure system.
Research Progress of Anti-jamming Technology of Unmanned Aerial Vehicle(UAV) Data Link
Authors: Shichao Guo , Dandan Guo , Qiongyu Zhang , Nankai Wu , Jiaxin Deng 
Published: June 2020

Abstract
An high-speed stealth UAV will be developed by an aviation research institute. Data link is an important part of UAV system. In order to have a deeper understanding of data link system, this paper was made through studying many recent academia papers. The basic composition and working principle of UAV data link system was introduced in this paper, the current UAV data link interference and anti-interference technology was expounded, the key problems faced by the development of UAV data link anti-interference technology were summarized, and the future development trend of UAV data link anti-interference technology was pointed out.
The Investigation of Parameters on the Microstructure of Friction Stir Welded 1060Al/Cu Butt Joint with 10mm Thickness
Authors: Wei Y N , Li H , Sun F , Peng X , Zou J T 
Published: June 2020

Abstract
T2 pure copper and 1060 aluminium alloy 10mm in thickness were joined by friction stir welding. The influence of fixed position and offset on the microstructure and hardness of joints was analysed. A joint having a good surface formation and a defect-free cross section was obtained when the copper was fixed on the advancing side and the offset was 3 mm. Layered structures, composite-like structures and clear copper side and nugget zone interface can be observed at the weld cross section. Under the combined action of heat and force, copper and aluminium inter-diffused and formed layered IMC at the interface. The layered IMC consists of Al2Cu and Al4Cu9 by EDS and TEM analysis. The hardness of the joint first increases and then decreases from Cu side to Al side, and the hardness of the offset of 3mm is the lowest.