bluuebunny/crossref_metadata_2025_split huggingface dataset:
Facilitating redox kinetics of sulfur species by cobalt-nitrogen co-doped porous hollow carbon for high-performance Li-S battery
Authors: Liu Bihan , Wu Zilong , Ismail Nadia , Chen Zhuo 
Published: May 2021

Abstract
The shuttle effect of polysulfides is the main obstacle restricting the development of lithium-sulfur batteries. However, most efforts focused on physical adsorption and polar adsorption cannot fundamentally solve the problem of sluggish conversion of polysulfides, especially for high sulfur loading. Herein, a cobalt-nitrogen co-doped porous hollow carbon sphere (Co-CN) is synthesized in one step. The porous conductive carbon spheres can realize a rapid charge transfer, mitigate volume expansion during cycling and enhanced physical adsorption for polysulfides. Nitrogen and cobalt doping provide chemisorption and catalysis for the restriction and conversion of polysulfides. Furthermore, liquid Li2S8 polysulfide was used as sulfur source to guarantee high sulfur loading and fast redox kinetic. Benefiting from the triple effect of physical adsorption, chemical adsorption and catalysis, the Co-CN@Li2S8 cell with sulfur loading of 5.15 mg cm−2 delivers a high reversible initial capacity of 1499 mAhg−1 at 0.1C and 880.9 mAhg−1 after 100 cycles. More excitingly, the capacity decay rate was only 0.012% per cycle at 1C over 1000 cycles, indicating excellent long cycle stability. This work provides a facile and effective route for Co-CN as a sulfur host in lithium-sulfur battery.
Mechanical Properties of Grout Materials for Concrete Structure Repairs
Authors: Zega Berkat Cipta , Prayuda Hakas , Cahyati Martyana Dwi , Monika Fanny 
Published: May 2021

Abstract
This research studies about the characteristics of grout material used for repairs to concrete structures. The purpose of this test is to produce materials with optimum composition for use as alternative materials for grouting or retrofitting. Fresh properties testing is carried out in the form of checking the flowability value as a benchmark to determine the proportion of the mixture, in addition to the hardened properties tested in the form of water content, absorption value, specific gravity, unit weight, and initial rate of suction. The results of the fresh properties show that overall the material can be worked or applied. While the hardened properties test results show that RCFA shows quite good results compared to other types of grout material, this is indicated by the results of absorption, moisture content and initial rate of suction which is worth 0. Besides that the type of grouting RCFA also produces the highest compressive strength value that exceeds 100 MPa at 28 days. Type of grouting SSCG produces a compressive strength that is small enough that is below 10 MPa so it is recommended not to use this type of grouting to be applied to the repair of concrete structures.
Analysis of Floating Net Cage Based on Geographic Information Syatem in Lembeh Island
Authors: Kumaat Joyce C , Andaria Kalvin S , Maliangkay Denny 
Published: May 2021

Abstract
This study aims to assess the suitability and distribution of aquaculture with the KJA system on Lembeh Island. The method used in this research is quantitative research with the spatial analysis used in Geographic Information Systems supported by primary and secondary data to obtain information on the suitability of aquaculture land with the KJA system on the Lembeh Island. The results of the analysis of the suitability level of KJA aquaculture in Lembeh Island with a total area of observation area of 2395.38 ha. The results of the study show the suitability level of the KJA system aquaculture are Suitable (S1), covering 227.81 ha located in the South Lembeh sea waters covering 101.48 ha while in the North Lembeh sea waters covering 126.34 ha. Suitable needs (S2) covering an area of 1161.75 ha, which is located in the waters of the South Lembeh sea waters area of 774.51 ha while in the waters of the North Lembeh sea waters covering is 387.25 ha. Unsuitable (N) covering an area of 1005.81 ha located in the South Lembeh sea waters area of 245.54 ha and the North Lembeh sea waters covering an area of 760.28 ha.
Benefits and Barriers of Open and One Government Data: A Systematic Review
Authors: Ibrahim Adelina , Abdullah Saiful Do , Arief Assaf 
Published: May 2021

Abstract
Open, and One Government Data (OOGD) is a breakthrough in the concept of e-government services management which has become an international standard. The government, as a public institution, must be able to manage information and provide public rights through the implementation of OOGD. OOGD implementation will provide benefits and obstacles. The purpose of this study is to present the results of a systematic review related to the potential benefits and barriers to OOGD implementation. The Systematic Method use in this study by using the Reporting Item Options for Systematic Review and Meta-Analysis (PRISMA) methods. Based on summary and result classification, there are five categories of barriers to adopting Open and One Government Data such as data and technology, stakeholders, organizations, legislation, and policies.
Barriers and Challenges of e-Government Services: A Systematic Literature Review and Meta-Analyses
Authors: Arief Assaf , Ayub Wahab Iis Hamsir , Muhammad Miftah 
Published: May 2021

Abstract
Good Governance and Smart Governments are optimising the use of ICT to change the characteristics of traditional government bureaucracy to smart government. The government opens itself by applying information technology in providing services to the citizen, businesses, and government under it. We are familiar with the concept of the term e-Government. Success in implementing e-Government is undoubtedly a concern of the government because it is the responsibility of the executive side. In achieving success, we also must look for barriers ahead. This study aims to find barriers and challenges so the success can be made. In this article, we will discuss the barriers and challenges to be implementing e-Government. The method used is a systematic review and qualitative analysis of using content analysis in empirical and theoretical studies. The results show the 34 main Barriers dan Challenges of e-Government services both in theory and implementation to get the right strategies and recommendation to improve public services.
Study on E-Government Integration: A Theoretical and Empirical Review
Authors: Arief Assaf , Sensuse Dana Indra , Latif Lita Asyriati , Yunus Abbas Muhammad 
Published: May 2021

Abstract
The term e-government integration is important to realize an organization’s goal. The bureaucracy and procedures at government organization consume lots of effort, time, money, and sometimes holds back the success of the e-government integration goal. E-government Integration development is very complex with many stakeholders, users, and different procedures at each organization. Evaluation is needed to keep accelerating e-government integration. This paper-based on a systematic literature review and in-depth interview in local government structure on how to evaluate projects such as e-government integration on theoretical and empirical perspectives. This study contributes to a basis for building an appropriate implementation strategy for the e-Government maturity process. The result shows the methods and lesson learns for designing and evaluating the project of e-government implementation.
Nazief & Adriani Stemming Algorithm With Cosine Similarity Method For Integrated Telegram Chatbots With Service
Authors: Prismana IGLPE , Prehanto DR , Dermawan DA , Herlingga AC , Wibawa SC 
Published: May 2021

Abstract
Information systems have developed a number of questions that are often asked to customers service with a high level of question similarity. For help it create a FAQ related to information systems. The FAQ has a lot of information so that the user is confused and it takes time to find information. More users to ask questions to customer service. Chatbot is one way to help users and customers service in this matter. Customer service can answer questions automatically and users can ask questions as if to ask customer service live. In this study, researchers will apply Nazief & Adriani algorithm used to do stemming because this algorithm is an algorithm which is effective in stemming Indonesian, and method cosine similarity to find the similarity level of questions with FAQs that are in the FAQ database. With implement algorithms and methods in chatbot with the help of the Telegram Messanger service produce a relative answer according to that the user expected. This method is an effective way to answer questions automatically. And if the question asked did not find an answer or the answer is not suitable then the question will be conveyed in e-layanan Information technology development center of Universitas Negeri Surabaya.
Holdout Validation for Comparison Classfication Naïve Bayes and KNN of Recipient Kartu Indonesia Pintar
Authors: Tempola F , Rosihan R , Adawiyah R 
Published: May 2021

Abstract
Kartu Indonesia Pintar (KIP) is one of the leading programs in the field of Education in the current government era. At present in the provision of smart Indonesian cards often occur not on target. The selection process for smart Indonesian cards is not transparent. For this reason, a transparent selection process is needed so that it does not cause jealousy among students. One way to make the selection process more objective is by applying existing classification methods to data mining. The study applies two methods to see the comparison, namely naïve bayes and k-nearest neighbor. In addition, the algorithm validation stage uses holdout validation. The purpose of algorithm validation is done so that each data has the same opportunity in the training and testing process, in this study also applied 150 dataset, the results showed that the system with no validation algorithm naïve Bayes accuracy is better that is an average accuracy of 85.66% and an average accuracy of k-nn 84.89%. However, if algorithm validation is applied, the k-nn accuracy is better at 88.7% compared to naïve bayes which is only 81.3%.
Implementation Model of Vendor performance assessment for information technology service provider in PT. Krafthaus Yogyakarta
Authors: Usman AAH , Hamid M 
Published: May 2021

Abstract
Vendor performance assessments are important to improve the performance of vendors and to manage long time relationship between SMEs and their vendor. The case study used in this study was on SMES in Yogyakarta. Vendor performance assessment model in this study is using models that have been developed in previous studies. Criteria in the model are Honest, Responsibility, vendor reputation, communication, quality of vendor, timely delivery, price, document and administration, vendor location and flexibility. The implementation of the vendor performance assessment model at PT Krafthaus Yogyakarta aims to make PT Krafthaus easily assess the performance of the vendor and easy to manage the performance.
Radio Frequency Identification (RFID) Application Analysis on E-Toll in Indonesia
Authors: Hidayat Rachmad , Akhmad Sabarudin 
Published: May 2021

Abstract
This study researched the application of RFID applications to e-toll. This study analyzed the effect of perceived usefulness, brand image, and perceived risk to purchase decision either directly or indirectly with customer perceived value mediated. This research used Structural Equation Model (SEM) method. The results showed that there was significant influence perceived usefulness to purchase decision directly or mediated by customer perceived value. The effect of brand image on purchase decision directly was non-significant but significant if customer perceived value mediated. There was a significant direct influence perceived risk to purchase decision but non-significant if mediated by customer perceived value. Managerial implication of RFID application on e-toll was customer got easy of transaction, customer did not need to carry money while transaction and customer did not have long queue when did the transaction at toll gate.
Analysis and Design of the Integrated Management Information System of the Company (SIMANTAP)
Authors: Martini Dwi Endah Susanti , Wibawa Rindu Puspita , Wibawa Setya Chendra , Sulistiyo Edy 
Published: May 2021

Abstract
Production and distribution activities are carried out by combining various factors of production, namely humans, nature, and capital. From this management, of course, humans cannot manage existing data in the company manually continuously because it could be that data that has been recapitalized can be lost resulting in the company’s strategy to achieve success is a little hampered. This study proposes a design of an integrated management information system company that can manage human and financial resources in one application. The proposed application is called SIMANTAP, where the purpose and function of this application are to create, view, and manage all company data starting from employee data, inventory items, seeing company expenses and income in one media to make it easier for employees, admins, and managers to see information company. This application was developed by the waterfall method, with a case study of a company in Surabaya. This application is expected to support the company’s business, especially related to human resources and financial management.
Characteristic Testing Of Simulation-Based Photovoltaic Models
Authors: Usman U. , Sirad Mochammad Apriyadi Hadi 
Published: May 2021

Abstract
This article explains the evaluation of the characteristics of PV implemented in Simulink / MATLAB. The implanted PV model is a model of one diode with a series resistor, a model of one diode with a series and parallel resistor, and a model of Two Diodes with a series and parallel barrier. The results obtained by the PV model with two diodes with series and parallel series are the best because it has an I_mp and V_mp error that opposes the data sheet compared to other models. Increasing the temperature will cause an increase in I_sc, but cause a decrease in V_oc. While decreasing from standard temperature will cause a decrease in I_sc but causes an increase in V_oc. This condition is the opposite of solar radiation changes, whereas I_sc will decrease dramatically with decreasing solar radiation. The diode ideal factor for the PV performance characteristics will cause a maximum increase in power P_m. However, it does not affect the values of I_sc and V_oc. While the greater the value of R_s will cause a decrease in P_m, but it does not affect the value of I_sc and V_oc. This is inversely proportional to the effect of the value of R_sh, while an increase in the value of R_sh will cause an increase in P_m but does not affect the value of I_sc and V_oc.
Fingerprint Electronic Attendance Application
Authors: Darwis M , Niswaty R , Arhas S H , Rudi  , Jamaluddin  
Published: May 2021

Abstract
This study aims to determine the description of the application of fingerprint electronic attendance at the Center for Early Childhood Education and Community Education in South Sulawesi. This research is a quantitative descriptive. The study population was all employees, amounting to 136 people because of the large population, this study conducted 50 percent sampling so that the sample was 68 people. The techniques used in data collection are observation, questionnaires, interviews, and documentation. Data analysis is presented through a frequency table and processed through a score calculation technique. The data analysis technique in this study uses the percentage formula. The results of this study indicate that the effectiveness of the application of fingerprint electronic attendance at the Center for Early Childhood Education and Community Education in South Sulawesi has been implemented very well or very effectively. These results are seen from the aspect; target achievement, adaptability, job satisfaction, responsibility.
The Development of Analog and Digital Trainer Base on Arduino Uno in Microprocessor Programming Subjects
Authors: Sulistiyo E , Meduri NRH , Achmad F , Wibawa SC , Spoettï G 
Published: May 2021

Abstract
Based on observations in vocational schools, it was found that schools rarely had companion media in analog and digital learning, especially during the pandemic, students were not allowed to go to school. A media trainer is needed that can explain easily to students. The purpose of this research is to make analog and digital trainers based on Arduino Uno in microprocessor programming subjects, that are expected to solve these problems. The research method uses Research and Development (R&D) has 7 stages: (1) the potential and problem analysis stage, (2) the data collection stage, (3) the product design stage, (4) the product validation stage, (5) the product revision stage, (6) product trial phase, (7) data analysis and reporting stages. From the experimentation of making analog and digital trainers, the results obtained validation of the use of trainer assessment of 84.37%. It can be categorized as very valid as a companion media in learning. The validation of the use of job sheets is also categorized valid with a value of 81.6%. The overall results of students in responding to this trainer as a companion in learning were very good, 88.49%. So it can be concluded that an appropriate media can assist students in learning without the teacher, while based on validation and response states this media is valid and suitable to be used as a companion media in learning microprocessor programming. This trainer is recommended to be a learning medium for students with an explanation from the teacher to understand analog and digital material.
Effects of Gibberellin (GA3) Concentration on the Quality of White Java Plum (Syzygiumcumini)
Authors: Muharram Muhammad , Satria Bayu Aji , Rahardjo Tjatur Prijo , Supandji  
Published: May 2021

Abstract
White Java plum (Syzygiumcumini) is a native plant of Indo-Malaysia, which has been only infrequently in the wild and even more rarely when cultivated. That is because the quality of java plum fruit is very low, and hence affecting society’s demand for the fruit. This study aimed to determine the quality improvement of white java plum fruit due to the induction of gibberellins. There were several fruit quality parameters applied in the study, including seed size, fruit size, the weight of seeds and fruit, thick fruit flesh, and sugar content in fruit. The study was conducted at Kadiri University, Kediri City, East Java, in August-September 2019. The experiment employed a Completely Randomized Design with a single factor, which was the induction of gibberellins with 5 levels of concentration (0, 25, 50, 75, and 100 ppm) and 6 replications. The white java plum tree utilized as an experimental sample was 10 years old. The results showed that the induction of gibberellins at a concentration level of 75 ppm was able to improve the quality of the white java plum, in spite of the fact that, on average, the parameters were not significantly different from the concentration of 100 ppm.
Microplastics Ingestion by Skipjack tuna (Katsuwonus pelamis) in Ternate, North Maluku - Indonesia
Authors: Lessy Mohammad Ridwan , Sabar Mesrawaty 
Published: May 2021

Abstract
Microplastic (MPs) is a contaminant of concern worldwide. Rivers are implicated as significant pathways of micro-plastic transport to marine and lake ecosystems, and microplastic ingestion by freshwater biota is a risk associated with microplastic contamination, but there is little research on microplastic ecology within freshwater ecosystems. Microplastic uptake by fish is likely affected by environmental microplastic abundance and aspects of fish ecology, but these relationships have rarely been addressed. We measure the distribution and abundance of micro-plastic in skipjack tuna from 3 markets in Ternate. In total 948 MPs pieces were obtained in 16 fish samples. The identified MPs characteristics show that the micro-plastic character is categorized from the type of fiber, film, and fragment, while the colour of microplastic is black, red, blue, green, brown, grey, and white.
Two-Analytical Comparison on Force Measurements and The Wave Pattern
Authors: Joko Suranto P , Sulistyawati W 
Published: May 2021

Abstract
This work presents a comparison of two analytical methods on the components of resistance, transverse and divergent waves, and the profile and contour of the waves. Michell’s thin linearization theory is applied to estimate the wave resistance and analysis of the method compared to the solution of the wave resistance coefficient based on the Rankine source method. The hull of series 60 is utilized as the initial hull, and varying the shape of the bow to the mid-ship with the hull offset variable. Computation of the wave resistance coefficient at low Froude number (Fr<0.3) shows the results of the wave resistance from the thin ship theory are higher, but it gives a graphical agreement with the Rankine source method. The wave profile provides a very similar profile line for both of them. However, the thin ship theory does not establish a significant difference in the wave profile from the initial hull of the improved hull variation. Comparison of contour displays is presented in different versions of the wave contour. Still, it affords a good contour match on the initial hull and the results of hull variations from both methods. At high Froude number (Fr>0.7), the initial hull and variations in the hull have minimal effects with small differences in wave resistance, profile and contour.
The Effectiveness of Using Heaters on Mufflers to Reduce Exhaust Emissions from Spark Ignition Engines
Authors: Warju  , Nugraha Ata Syifa’ , Ariyanto Sudirman Rizki 
Published: May 2021

Abstract
The increasing population of motor vehicles can result in increased levels of exhaust emissions. The most significant contributor to exhaust emissions comes from motor vehicle exhaust. This study aims to reduce exhaust emissions, which will have an impact on reducing air pollution caused by motor vehicle exhaust gases. This research method is quantitative descriptive experimental with exhaust gas emission testing standards based on SNI 19-7118.3-2005. The test results show that the use of a heater in a Yamaha New Vixion Lighting motorcycle exhaust can reduce exhaust emissions CO and HC. By using an experimental exhaust one heater, it can reduce CO exhaust emissions by an average of 27.74%, and HC exhaust emissions by an average of 5.55. Whereas using experimental exhaust two heaters can reduce CO exhaust emissions by an average of 35.02%, and HC exhaust emissions by an average of 16.31.
The Effectiveness of Using Variations in Fuel Against Engine Performance 4 Steps 100 CC with Compression Ratio 8:1
Authors: Hidayatullah R S , Susila I W , Arsana I M , Warju  , Ariyanto S R 
Published: May 2021

Abstract
The compression ratio is one of the benchmarks in determining the appropriate fuel RON for motorized vehicles. The use of RON that is not following the manufacturer’s specifications can undoubtedly hurt engine performance. The purpose of this study was to analyze the effect of premium, pertalite, Pertamax, and Pertamax turbo fuels on engine performance. This research is experimental research where the object of study used is the Honda Supra X 100cc. The research instruments and equipment used included a dynamometer chassis and a blower as a cooling fan. The engine performance testing method is carried out according to the SAE J1349 standard. Meanwhile, the data analysis technique used descriptive methods. From the results of data analysis obtained from the study, it is concluded that the RON 88 is suitable for 3000-4000 rpm, while RON 90.92.95 is suitable for 4500-7000 rpm, in addition to motors that have a compression ratio of 8:1 they can use RON 90.92.95 without modification to the engine.