bluuebunny/crossref_metadata_2025_split huggingface dataset:
The development strategy for sustainable livestock sector in small-islands region: a preliminary study on local cattle farming in Buru Island, Maluku Indonesia
Authors: Kuswaryan S , Daud A R , Firmansyah C , Tejaningsih S 
Published: February 2021

Abstract
Beef cattle are relevant to farm products for the livelihood of most small-scale farmers in Buru Island in Maluku Province. Other than being a significant source of income for farm households, the presence of cattle farming on that island is also strategic for the Indonesia livestock sector as Buru is one of the areas in the eastern part of Indonesia in which has the most significant population of local cattle. Nevertheless, in recent years, its population has been observed to be stagnant even tends to decline; hence many issues of its sustainability arise. The national government and stakeholders of livestock development positively should respond to this phenomenon. As a contribution to solving these issues, this article reports our preliminary study, which generally aims to propose feasible strategies for sustaining the presence of cattle farming and its population, especially in the context of islands region economic development. Our results show that current cattle farming on the island is in the state of survival; thus the strategy for the development must focus on moving to the better state through ensuring farmers' access to available natural resources and on improving public infrastructures, distributions, and logistics of the farm products. Recommendations for designing such strategies and policies are discussed briefly.
Temporal dynamics of the plankton community structure in Madura Strait: algae bloom study case
Authors: Saptarini D , Muzaki F K , Ibadah A S 
Published: February 2021

Abstract
In March 2019 there was a phenomenon in the waters around the Suramadu Bridge in the Madura Strait, where surface water appeared in a different color layer. Madura Strait has a surface current with a range of 0.013 - 0.77 m/sec. In the west season to transition I (December- May) surface flows move from West to East and vice versa in the east season to Transition II (June-November) surface currents tend to move from East to West. Madura Strait is a river estuary in the city of Surabaya which tends to have poor / moderate polluted water quality due to the large amount of organic material input into the waters. Both of those causes the Madura Strait tends to have a high concentration of organic matter and primary productivity. Research aims on temporal dynamics in the structure of the plankton community in Madura Straits after blooming algae to analyze the abundance, distribution, diversity, and dominance index with temporal water quality indicators. Water samples were collected using Kitahara net for phytoplankton by filtering from bottom to surface. The density of plankton for each station was measured base on their biovolume bases. Genus of phytoplankton was identified for each station. Phytoplankton community consists of 15-21 species with Chaetoceros sp. as a dominant species. At least five species of Chaetoceros were identified when sea water had a color stratification and declined in subsequent observations. Chaetoceros sp.2 is the dominant species with abundance range 12,018 ind/L - 47,580 ind/L. The diversity index (Shannon Wiener index) shows the waters in poor condition with phytoplankton H’value range 0.2511 - 0.9543, and zooplankton H’ value range 1.2566 - 2.0201. The dominance index (D) of phytoplankton 0.5282 - 0.9263 and zooplankton 0.1639 - 0.3882.
A non-catalytic process to produce levulinic acid from the flesh fruits of trembesi (Samanea saman) using a subcritical water
Authors: Pujiastuti Y A , Zullaikah S , Setiawan D , Fahrurozy I , Syafril A R , Prawira Y , Quitain A T 
Published: February 2021

Abstract
Levulinic acid (LA) has been identified as a promising green, biomass-derived platform chemical. A non-catalytic method to produce LA from the flesh fruits of trembesi (Samanea saman) using subcritical water has been performed. Effect of reaction time and operating pressure under CO2 atmosphere on the conversion of glucose and yield of LA has been investigated. The conversion of glucose was found to be affected by the reaction time rather than operating pressure. The longer reaction time from 30 to 480 min. increased the conversion of glucose from 87.72% ± 1.57% to 98.74 ± 1.76% or increased by 12.56% at 200 °C, 4 MPa and ratio of flesh fruit and water of 1/8 (g/ml). Increasing the operating pressure from 4 MPa to 8 MPa, only increased the conversion of glucose by 4.67%. The yield of LA was found to be affected by the reaction time and operating pressure. The yield of LA was increased by 61.88 % by increasing reaction time from 30 to 240 min, while extended further reaction time to 480 min. the reduced yield of LA by 24.05 %. The highest yield of LA (22.28 ± 0.04 %) can be achieved in 240 min at 200 °C and 8 MPa. The result showed that LA could be obtained by a green method.
Representation of the greatness of Kambang Putih Seaport in the past on Ganggeng motif
Authors: Ciptandi F 
Published: February 2021

Abstract
In the 11th century, precisely in the kingdom of Kahuripan under the reign of King Airlangga (1019-1041), Tuban in East Java – Indonesia had a port called Kambang Putih. This port played an ancient international trading port that has the role to connect the western and eastern parts of the world. The greatness of the port gradually faded away, and its location has now turned into a recreational area known as Pantai Boom. For the people of Tuban, the great history of Kambang Putih port still leaves a pride that is manifested in the form of Ganggengbatik motif, especially inspired by seaweed plants. This motif is one of the classic motifs which until now still continues to be used by batik artisans. Furthermore, in order to keep up with the times, this batik motif has also started to be created by utilizing the role of technology in the form of design software. Through a review of various data sources including scientific literature, interviews with experts, and communication with traditional batik artisans, it was expected to be able to reopen the knowledge of the history of the greatness of the Indonesian sea, especially in Tuban so as to encourage various efforts to preserve and maintain the tradition. In addition, the study came down to mention the efforts to preserve the tradition of batik belonged to the community of Tuban by encouraging initiatives in creating motifs with inspiration from their maritime potential.
E-commerce logistics system for Indonesia’s cinnamon exports
Authors: Nur H I , Nugroho S , Devira F , Lazuardi S D , Wuryaningrum P , Riduwan M , Devitasari D V 
Published: February 2021

Abstract
Indonesia is a primary world cinnamon exporter, half of the world’s consumption is supplied by Indonesia. From every retail transaction, some 25% goes to the farmers. Farmers do not have so much benefit from the increasing export price. The rise of e-commerce seems to be a promising instrument. This e-commerce grows rapidly particularly in Indonesia. The improving internet connection speed and bandwidth results in a growth of internet users. The aim of the study is to investigate the viability of improving logistic system by using e-commerce for export. The case study is the cinnamon export from Padang to Baltimore, with annual demand of 21 ton. At present, the delivery of cinnamon from the farmer to end user takes in average 59 days with a shipment cost of IDR 113,000/kg (USD 7.94/kg). By using e-commerce, a small size delivery could be shorter, namely only nine days, with a shipment cost of IDR 299,300/kg (USD 21.04/kg). Considering the frequency of shipments, cash flow, and deteriorating quality and price for a long shipment, it is found out that e-commerce is very promising alternative for cinnamon export, where the total point-to-point shipment would cut by half. For large shipments by exporters, a substantial benefit is obtained from a shorter delivery time of 29 days, with the same unit shipment cost. It is obtained that marketplace scenario is the most optimum with total logistics cost and time for about IDR 113,000/kg (USD 7.94/kg) and 9 days respectively.
The investigation of life cycle costs of Mobile Harbour Crane: a case study in Berlian Terminal at Tanjung Perak Seaport Surabaya
Authors: Gurning R O S , Simatupang E J , Handani D W 
Published: February 2021

Abstract
Cost is one of the important components that may not be separated in loading and unloading operations, as tariff setting of terminal operation depends on the level of cycle costs implemented. During the life cycle, from the planning to operational stages, every stage is closely related to the cost component. If it is not well managed, it may consequently generate higher costs in the loading and unloading operation. The equipment focused of this research is Mobile Harbor Cranes (MHC) which are being operated in Berlian Terminal, Tanjung Perak port, Surabaya. The main problem as a main concern of this research is how to correlate the allocation of cargo handling equipment with the cost planning during the lifetime of the equipment. Particularly to clearly define the level of costs expended in accordance with the time and workload of the equipment. The research aims of this research, therefore, is to evaluate and optimize the cost cycle value of MHC based on its energy usage applying linear programming. As the result, the research finds that MHC maintenance cost were higher than operational cost. To achieve more efficient maintenance and operational costs, 11 scenarios of energy usage were applied to have a balance life cycle cost arrangement
Sleeper seat design for inter-island hi speed vessel with integrated digital design method
Authors: Windharto A , Iskandriawan B , Mustafa N S Y 
Published: February 2021

Abstract
The need for hi speed vessel in Indonesia is increasing by rapid economic growth in the region. In one hand this indicates high demand of passenger accommodation for public transport and services. On the other hand, facilities and transportation services are not optimal yet, especially for inter-island hi speed vessel that require relatively long travel times, better, safer and more comfortable for passenger facilities and services. The aims of the current study are the design, engineering, and prototyping sleeper seats for modern inter-island hi speed vessel, equipped with digital information systems and passenger entertainment, to replace cubical room system (cabin accommodation). The research method is the application of Integrated Digital Design (CAD-CAM-CAE) as design as built, covering study of geometry, ergonomics, human factors engineering, construction, materials, and integrated engineering analysis. The later includes finite element analysis through digital prototypes. For the next step involves manufacturing, prototyping, testing, and certification. The results are engineering design, prototype of inter-island Hi Speed Vessel’s Sleeper Seat and state of the art technology in Integrated Digital Design, digital prototyping, certification (SNI), and Intellectual Property Rights (patent, industrial design right, and branding).
The effect of use of biodiesel B30 from palm oil to degradation of oil lubrication in 1-cylinder diesel engine 4-stroke
Authors: Iswantoro A , Cahyono B , Zaman M B , Semin  , Busse W 
Published: February 2021

Abstract
New alternative fuels are needed to reduce the fossil fuels. Biodiesel from palm oil is one alternative fuel to replace fossil fuel. This is because Indonesia is the largest producer of palm oil in the world. There are several analyzes that the use of palm oil causes a significant decrease in the viscosity of lubricating oil. A research is carried out to evaluate the effect of B30 biodiesel from palm oil on the degradation of diesel engine lubricating oil. The method used is experiment with testing diesel engines endurance referring to the standards of the Engine Manufacture Association (EMA) to determine differences in lubrication degradation. As a result, B30 biodiesel from palm oil causes greater degradation in lubricating oil than using Dexlite diesel fuel. Biodiesel B30 causes lubricating oil to decrease its viscosity by 46.98%, increase the viscosity index by 7.84%, increase in the flash point, increase in the pour point some 3°C and decrease in the base number by 4.62% and 3.6026% less water content.
Traffic analysis for enhancing safety in the Singapore Straits using AIS data
Authors: Zaman M B , Kobayashi E , Zubaydi A 
Published: February 2021

Abstract
Enhancing transportation safety is an important step that should be taken. In this study, traffic analysis was carried out in the Singapore Strait. The location has a density of traffic in the world as well as the potential for ship accidents. In addition, the Singapore Strait is the world's main route connecting to several countries. The purpose of the study was to analyze the traffic conditions in the Malacca Strait by using AIS data. The method was using MySQL to analyse AIS which was converted with GIS. AIS provides information in real time. IMO has recommended the use of AIS on ships to improve safety. The results of this analysis are very useful for improving ship safety in the Singapore Strait.
Application of Anthropometry Methods in Ergonomic Chair Redesign to Prevent Fatigue A Case Study UKM Lestari Jaya, Tulungagung
Authors: Silviana  , Hardianto A , Hermawan D , Abdurahman  
Published: February 2021

Abstract
Small and Medium Enterprises (UKM) Lestari Jaya is one of the home industries in Pucuk Village, Tulungagung Regency that produces chips from processed cassava ingredients which are commonly called samiler. These samiler chips are produced using manual methods so that the production process still depends on workers. So far, the work chairs used for military production, especially in the printing process, are not ergonomic and cause fatigue. This work chair is said to be not ergonomic in terms of the form of the backrest that is far from the back of the worker, the size that does not fit the worker’s body shape, the chair material is made of plastic and the resistance of the chair in accepting body loads. Based on data from the Nordic Body Map questionnaire distributed to workers, chairs that are not ergonomic can cause fatigue in workers. Based on the above problems, a study was carried out to redesign an ergonomic work chair with the aim of reducing the risk of fatigue in workers. The anthropometric calculation of percentiles is used to determine chair size. The data is in the form of the 95th percentile for the seat height (45 cm) so that it can be used for people who have long or short legs, the 95th percentile for the width of the seat base (44.02 cm) so that the size of the seat base is wide, the 50th percentile is for the back height ( 56.58 cm) so that it can be used for tall and short people, the 50th percentile is for the length of the seat base (44.93 cm) so that people with large and small popliteal bottoms can use this chair, and the 50th percentile is for the height of the armrests (23, 95 cm) to fit the average human hand size. The advantages of this chair design are that it is stronger, the size of the chair is in accordance with the worker’s body size and the addition of functions, namely that the chair’s height can be raised or lowered according to the worker’s body size
Physical Properties of Liquid Soap using Katuk Leaf Extract (sauropus androgynus (l) merr.) as an Alternative to Natural Surfactants
Authors: Mursal I L P , Hermana V A , Farhamzah  
Published: February 2021

Abstract
Katuk leaves (Sauropus androgynous (L) Merr.) contain saponins that can potentially act as natural surfactants to replace Sodium Lauryl Sulfate (SLS). This study aims to determine the variation in the concentration of katuk leaf extract (Sauropus androgynous (L) Merr.) On the results of testing the physical properties of liquid soap formulations and to determine the potential of katuk leaf extract as an alternative to natural surfactant substitute (Sauropus androgynous (L) Merr) in the formulation. Liquid soap preparations. The liquid soap formulation of katuk leaf extract with concentrations of 1%, 3%, 5%, 7%, and 9% was replicated 5 times. The physical properties test carried out were organoleptic testing, pH, foam height, specific gravity, and viscosity. Based on the research that has been done, it can be concluded that the variation in the concentration of katuk leaf extract affects the physical properties of liquid soap includes organoleptic, pH, high foam, specific gravity, and viscosity. The liquid soap formulation uses katuk leaf extract has potential as an alternative to natural surfactants instead of surfactants. It can be known that the three formulas, namely F1, F2, and F3 as a whole meet SNI standards.
Development of Virtual Reality Application to Increase Student Learning Motivation with Interactive Learning in Vocational Education
Authors: Maulana F I , Purnomo A 
Published: February 2021

Abstract
In Vocational Education, learning by doing is very important to complement the concept of learning with technical introduction to maximize the results of the material received. However, in various subject areas, learning is still carried out conventionally and students are unable to apply their knowledge practically even though they have theoretical understanding. This is closely related to the lack of motivation from students in the classroom because there is no interactive course content required for visualization of concepts in each subject area. Even during the COVID-19 pandemic, teaching and learning activities had to be carried out online at their respective homes. So that further limits the scope of student practice to maximize learning outcomes. As a result, it is not possible for students to understand more in-depth concepts of subject matter using conventional learning methods. Students’ motivation to learn will increase if students are provided with practical tools so that they can be visually involved and engage with what they teach in class. The development of practical tools with Virtual Reality technology, which can visualize 3D models can be a solution to meet this goal. The main objective of this paper is to create and use Virtual Reality as an immersive learning medium and its contribution to student motivation to understand the definition of subject matter in various fields.
Analysis of Custom IoT Based Electricity Monitoring System
Authors: Eridani D , Widianto E D , Yulianto A R 
Published: February 2021

Abstract
Electricity is a resource that currently exists in various sectors of the community. Each person’s electricity needs are different depending on the needs of the electronic equipment used. Excessive use of electronic equipment creates extreme electrical power. Electricity consumption is an issue that discussed since a long ago. This research aims to present a custom electronic sensor to monitor electricity consumption based on the Internet of Things. It also explained the correlation between input and output points from the custom electronic sensor. This research method consists of 4 steps: system requirement, system design, system implementation, and last, testing and analysis. The system developed is able to get the current, voltage, and power data. The data then processed by Arduino UNO and directly send by ESP8266 to Blynk Application on Android smartphones via Internet communication. The voltage testing is done in the voltage and current sensors to get the program’s main loop’s constant values. The system input value and the Blynk Application value are also measured to check the system’s error.
E-money Academic: Lesson from Literature Visualizing Scientometric Positioning (1968-2019)
Authors: Purnomo A , Firdaus M , Hasanah U , Sano A V D , Prasnowo M A 
Published: February 2021

Abstract
There is no overview of literature in the area of e-money research which shows the big picture using data from all countries This paper aims to review the status and visual map position of research in the e-money literature indexed Scopus that used a scientometric positioning overview. The research was carried out using bibliometric techniques. Data analysis as well as visualization utilizing VOSViewer program and the Scopus function for analyse search results. In this review, the details collected applied to 3,011 documents issued from 1968 through 2019. The study reveal that Miller, A. and Chinese Academy of Sciences were the most active individual scientists and affiliated institutions in e-money literature. In emoney, computer science and Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics were the most areas of study and dissemination sources. There were nine worldwide group maps with collaborative researchers. In order to identify the body of knowledge created from fifty-one years of literature, this study constructed a convergence axis grouping comprising of e-money: Mobile telecommunication system, Electronic cash system, Finance, Profitability, Investments, Intelligent system, abbreviated as MEFPII themes.
A model of inductive charging technique in battery electric vehicles(BEVs)
Authors: Mishra Partha , Bhakta Arpita , Sarkar Rittick , Jasmin Farzana 
Published: February 2021

Abstract
In this paper a prototype model has been designed. In this study a theoretical concept of a simple but effective method for inductive charging in battery electric vehicles(BEV) has been proposed. It has been observed in experimental study that power can be transferred wirelessly from transmitter to receiver using inductive coupling principles. In this article a prototype model has been designed to observe the inductive charging and also the inductive resonant coupling. It has also been observed experimentally that the power output of the wireless charging model significantly based on the resonant condition between the transmitting and receiving coils. In this article a proposed model has been presented to focus on the inductive coupling power transfer technique which is used for charging of a battery electric vehicles(BEVs). The proposed model and its experimental results successfully describes the inductive charging technique and the maximum power transfer occurs when resonant condition achieved by the two coils in very smaller distance. This model is very effective to established the concept of wireless power transfer in very smaller coil size. The experimental implementation of the design is made with digital multimeter, milliammeter, power-MOSFETS, voltage regulator IC, oscillator and diode rectifier circuit.in the transmitter and receiver coils.
Quality Analysis of Tribal Casting Products by TOPSIS for Different Gating System
Authors: Roy Soumyajit , Pramanick Akshay Kr. , Datta Prasanta Kr. 
Published: February 2021

Abstract
Indian Tribal Products has high demand in the International market but the quality of the Tribal Products are not been analyzed by scientific technique, as no R&D is involved with the sector. A Lost-Wax Investment cast metal craft traditions were adopted for the project which has been in practice from the ancient age. An experiment was designed and done to understand the effect of gating design which controls the quality of the casting. The quality of castings was analyzed based on Eccentricity, Uniformity of Thickness, Surface Quality and Surface Roughness. The preferable gating system was chosen using TOPSIS.