bluuebunny/crossref_metadata_2025_split huggingface dataset:
Electrochemical performances of lithium-ion coin cell based on Li4Ti5O12 anode
Authors: Supardi Z A I , Munasir  , Najihah A I , Priyono S , Prihandoko B 
Published: May 2021

Abstract
Recently many portable devices need electrical energy which instant and high capacity. Lithium-ion battery is one of very popular as mobile electrical energy source for them. This experiment focused to elaborate the electrochemical performances of Lithium-Ion (LI) coin cell based on Li4Ti5O12 (LTO) Anode with variation of calcination holding time (2, 4 and 6 hours) at temperature 900°C. They are electrical conductivity, specific capacity and coefficient of ion diffusion. Sol-Gel method and doctor Blade technique were used to produce LTO anode material. Vacuum technique was used to assembly LI coin cell. Electrochemical Impedance Spectroscopy and Cyclic Voltammetry were used to measure the electrochemical performances of theses coin cells. The best result of these experiments showed that coefficient of ionic diffusion is 3.48×10−4 cm2/S, the specific capacity value is 304 mAh/g and electrical conductivity value is 6.87×10−3 S/cm. So, this experiment has shown strongly a prospective for application in the future to produced commercially lithium-ion coin cells.
The Limestone as a Materials Combination of Base Course on the Road Pavement
Authors: Poernomo Yosef Cahyo Setianto , Winarto Sigit , Mahardana Zendy Bima , Karisma Dwifi Aprillia , Ajiono Rekso 
Published: May 2021

Abstract
Road base coarse construction requires a foundation that must be sufficient to carry the vehicle load on the subgrade. Therefore the upper foundation layer is very directly influential on the burden received by the pavement layer. Limestone is an alternative innovation for the aggregate base coarse foundation. Based on the method of this research, an experiment was carried out to determine the aggregate test and the strength value of Limestone as a mixture of the upper foundation layers on the pavement. The cornerstone of the testing theory uses the 2010 Bina Marga General Specifications method, with the percentage of Limestone as a gross aggregate of 5%, 10%, 15%, and 20%. The number of samples used for each variation is five pieces. The test results show that a mixture of 10% limestone is the optimum result. The abrasion test showed a resistance of 25.63% and an area of 81.53% rupture. In the LL test results showed a value of 12%, IP 6.1%, CBR Soaked 94%, ɣd 2.43 gr/cm3, and W valued at 5.69 gr. Thus Limestone can be used as a combination of upper foundation layer material on road pavement.
Blood Donor Location Scheduling Application Using Geographic Information System
Authors: Sugiarto  , Mas Diyasa I Gede Susrama 
Published: May 2021

AbstractData on blood donors in the city of Surabaya has improved during normal conditions, when during the COVID-19 pandemic conditions such as experiencing a shortage of blood donors at the Palang Merah Indonesia (PMI) and several hospitals. This condition continued to decline when conditions in the city of Surabaya experienced an increase in confirmed cases of Covid19. The same thing develops with the existence of geographic information system technology and real-time, dynamic and online services for various activities of daily activities ranging from school, work, to shopping for daily needs. This GPS (Geographic Position System) technology will be very easy to use by the public considering that all smartphones currently have embedded GPS technology. Smartphone with the Global Positioning System (GPS) feature is a solution to be able to assist in the process of taking blood donors, as well as the fulfillment of blood stocks in various regions, this can be seen from the number of blood stocks in Palang Merah Indonesia (PMI) on June 2020. The enthusiasm of the community develops when the ease with which technology can be done to meet the needs of life. This application requires development; this is because the development of GPS technology will have more functions.
Andorid-based Diet Guide for Diabetes Melitus, Heart, Maag, Kidney, and Impaired Liver Function Disease
Authors: Dolfi Loppies Stanly Hence , Xaverius Fransiskus , Pandiangan Nurlela 
Published: May 2021

Abstract
In this study an android-based application was produced that can provide dietary information and knowledge to patients with diabetes mellitus, heart, maag, kidney, and impaired heart function deisease, that for healthy living does not have to be expensive. The habit of consuming liquor, consuming fast food, and rarely doing physical activities is the cause. Diet is the first initial method recommended by doctors to patients. Eating patterns with the right menu, exercise and adequate and regular rest can help the patient’s recovery. Based on 50 questionnaires distributed and returned by patients, 42 of the total 50 patients who went on a diet within 1 month routinely felt a very good recovery in their bodies.
Twitter Sentiment Analysis as an Evaluation and Service Base On Python Textblob
Authors: Mas Diyasa I Gede Susrama , Marini Mandenni Ni Made Ika , Fachrurrozi Mohammad Idham , Pradika Sunu Ilham , Nur Manab Kholilul Rachman , Sasmita Nyoman Rahadi 
Published: May 2021

Abstract
The development of technology in the current era is very rapid, this is indicated by the many social media that have sprung up. One popular social media is Twitter. Twitter initially became a forum for social media users as a place to preach activities, discuss, and share stories between users. However, now Twitter is even a place for complaints for customers of a company, one of which is PT Telkom Indonesia. Some customers prefer not to contact the call centre that has been provided by the company to be contacted if there is a problem, but prefer to complain via Twitter. According to data taken during a certain period, 3324 tweets were obtained, which included the keywords indihome, myindihome, useetv, and wifi.id. The tweets data that has been collected, if processed properly, will be valuable information for the company. For example, as a reference to assess brand image, customer feedback, and marketing opportunities. This study classifies tweets where the keywords indihome, myindihome, useetv, and wifi.di. Furthermore, several data preprocessing techniques were carried out, sentiment analysis, and visualization in the form of histograms, pie charts, and word clouds. From 3324 tweets that have been analyzed, it is found that there are 34.4% positive tweets, 16.1% negative tweets, and 49.6% neutral tweets.
Information and Communication Technology Hassles within Village-owned Enterprises of Bontomanai Gowa
Authors: Niswaty Risma , Darwis Muh. , Dhahri Irsyad , H. Nasaruddin 
Published: May 2021

AbstractAs information and communication technologies have lured all over the country, it is unavoidable used by the Village-owned Enterprise (BUMDES) of Bontomanai, Gowa Regency amid programs to increase citizen participation. Therefore, the development of the ICT on the enterprise has to deal with citizen acceptances for the sake of the economic purpose. This research is based on a new perspective to increase public community participation as well as the management of village-owned enterprises to deal with information and communication technology developments. It is also a form to support e-Government programs of the Gowa Regency Government. The results show that the management of BUMDES supported by information technology system had significantly increased the public participation. It is also found that the management of BUMDES is able to improve the welfare of the community.
Evaluating of Open and One Data in Digital Government Services Implementation: A Literature Study
Authors: Turuy Seh , Arief Assaf , Wahab Iis Hamsir Ayub 
Published: May 2021

Abstract
The Digital Government Open and One Data is a concept where citizens have the right to access open and one data services, information, and practices generated by the government. This concept has driven many countries to implement Open and One Government Data (O2GD). It is critically to assess the implementation of Open and One Government Data to make this implementation better in the future and meet the goal, which gives citizens free access to public data without restriction. This paper conducted by systematic literature review. This study focused on investigating the domains used to evaluate the implementation of O2GD. This study using literature review methods from the digital library in 2014-2020. The result of the study shows that there are seven main dimensions to evaluate the implementation of O2GD which are quality of data, benefit, public value, data infrastructures, people and organization, policy and regulation, application and services.
Focused Web Crawlers on Domain-Specific Retrieval Systems
Authors: Suzanti Ika Oktavia , Razi Fakhrur , Husni  , Rochman Eka Mala Sari , Fitriani Nurhayati 
Published: May 2021

Abstract
The need for a large and growing internet has formed a new culture that symbolizes widespread dissemination of knowledge, information and data. Everyday hundreds of pages as well as new information were added. deleted and modified. Search engines is a finding information tool. First step of search engines is web crawler, a process crawling webpage to obtain information about its content. Focused web crawler is one of web crawler that scrapping certain relevant webpages to given topic and ignores others that have nothing to do with. Indonesia is an archipelago that number of island reached 17.491. where it makes Indonesia rich of different kinds of travel, culture and food that is characteristic of each region. The amount of information available does not rule out possibility that there are some food recipes do not include staples used so that web crawlers are needed to find out the ingredients. With this application, it is expected to facilitate the search for information on various processed recipes with meat-based ingredients from all regions in Indonesia.
Character Recognition using Adjustment Convolutional Network with Dropout Layer
Authors: Setiawan Wahyudi 
Published: May 2021

Abstract
Character Recognition is the machine’s ability to receive and translate certain character input. It can be handwriting, computer-fonts, and images. In this article, character recognition is done using the Adjustment Convolution Network (ACN). The ACN architecture used consists of 28 layers (input, 5 convolutional, 5 Batch Normalization, 5 Rectified Linear Units, 4 max-pooling, 5 dropouts, Fully Connected Layer, Softmax, Output). Dropout is located in each convolution block. The values used are 0.25, 0.3 and 0.4. Dropout keeps away from the overfitting incident. The network is carried out with the optimization of Adaptive Moment Estimation (Adam) which is a combination of momentum and adaptive sub-gradient variable. Data contain digits 0-9, letters A-Z, and letters a-z that amounted to 171,562. Data is taken from MNIST, notMNIST and Char74K public data. A comparison between training vs. testing data is 70:30. The results showed accuracy of up to 99.04% (MNIST), 94.90% (notMNIST), 98.9% (font-Char74K), 79.4% (Handwritten-Char74K), and 86.80% (Image-Char74K) respectively.
Dimensions reduction of vibration signal features using LDA and PCA for real time tool wear detection with single layer perceptron
Authors: Arendra Anis , Herianto Herianto , Akhmad Sabarudin , Lumintu Ida 
Published: May 2021

Abstract
This study uses the Linear Discriminant Analysis (LDA) method along with the Principal Component Analysis (PCA) method to reduce the dimensionality of the vibration signal feature classified by Single Layer Perceptron (SLP). The vibration features to be reduced are 10 out of 270 features selected based on the correlations analysis. The LDA and PCA transformations provide only three inputs, than the original 10 signal features for the SLP classifier. The Single Layer Perceptron is trained with a sequential incremental training approach using the perceptron learning rule. The training phase of SLP resulting Mean Squared Error (MSE) as low as 0.0840 and the validation phase in the CNC machining provides 97.5% accuracy with zero false alarms.
Utilization of Zoom Cloud in M3D (Maze 3D) Game-Based Learning to Develop Early Childhood Social-Emotional Skills
Authors: Bali Muhammad Mushfi El Iq , Najiburrahman  , Fathony Alvan , Salma  , Maghfirah Eva , Farida Lia Ayu 
Published: May 2021

AbstractThe diversity of educational game tools has unique and interesting functions in learning in Early Childhood Education. Learning media integrated with information and communication technology have been developed so that they are widely available and easily accessible. E-learning applications that are commonly used today use the Zoom application. Socio-emotional development of early childhood is the level of interaction of children with other people ranging from parents, teachers, friends and the wider community. This research approach uses a qualitative approach. While this type of research is a case study. Primary data includes data obtained through interviews with teachers, parents and students. Secondary data is data obtained in the form of documents and archives from related institutions and from other written sources. Data collection techniques include; observation, interview and documentation. Data analysis uses three channels, namely data reduction, data presentation, drawing conclusions/verification. Checking the validity of the data using the techniques of credibility test, transferability test, dependability test, and confirmability test. Games-Based Learning through Zoom Cloud is learning that should be appreciated and needs to be developed. Games-Based Learning through Zoom Cloud has a large enough influence to improve the emotional development of early childhood.
Addition of Fixed Bed Biofilm in Sequencing Batch Reactor to Remove Carbon-Nitrogen for Apartment Wastewater
Authors: Hendrasarie N , Zarfandi FI , Rosariawari F , Putro RKH 
Published: May 2021

Abstract
The addition of media to grow biofilms in the Sequencing Batch Reactor (SBR) process, is an advance technology that aims to improve the performance of the reactor as a waste water treatment. SBR works by utilizing microbes that are suspended in the sludge resulting from the SBR process. With the media being added as a place to grow biofilms, there is a consortium of bacteria suspended with attached bacteria. Anaerobic phase is added to give anaerobic bacteria a chance to develop, thus accelerating the breakdown of organic content in liquid waste. Research methods include the best weight of biofilm growing media, namely coconut fiber and palm fiber. And the best stabilization time, to reduce the organic content of wastewater. The research result obtained N-total removal was 93.21 % and COD removal reached 92.11 %. The identification of the dominant bacteria growing in biofilms and those suspended have the same characteristics. The microorganisms which dominantly grew and were found in the media were micrococcus and bacillus.
Effect of the Optimized Temperature and pH Solution on the Crystallization of Struvite
Authors: Perwitasari D S , Santi S S , Bayuseno A P , Jamari J , Muryanto S 
Published: May 2021

Abstract
A computational model was developed and applied to investigate struvite crystallization with design parameters of temperature 30, 35 and 40° C and pH solution. This study used visual MINTEQ to optimized the operating parameters for controlling crystallization of struvite by the addition of maleic acid in liquid waste. The results showed both struvite and struvite-K minerals were the main minerals that control recovery of Mg+2, NH4+, and PO4
−3 ions. Ammonium (NH4+) removal was obtained of 55.938% at a temperature of 30° C and pH 9 so that it could be used as fertilizer and reduce the environmental impact. The identification of struvite crystals by the Rietveld XRPD method and irregular prismatic crystal morphology were shown in crystal struvite using SEM-EDX analysis.
Time Optimization on Biodiesel Conversion from Waste Cooking Oil
Authors: Saputro Erwan Adi , Erliyanti Nove Kartika , Yogaswara Rachmad Ramadhan 
Published: May 2021

Abstract
The need of energy is increasing in present, due to the world population growth and increasing industrial sector. Many peoples concerned about climate change and energy sustainability. For that reason, in recent years, the renewable energy is getting more intention. One of the prospecting renewable energy is biodiesel. There are many sources for biodiesel production, such as; jatropha curcas oil, sunflower seed oil, waste cooking oil, etc. In this research the waste cooking oil (WCO) is used for producing biodiesel through transesterification process by varying the reaction time. This research aims to find the optimum biodiesel conversion based on the reaction time process. The result show that the maximum yield is 62,8% when the reaction time is 80 min. The density value is around 0.88 g/ml and the viscosity is around 3.6 mm2/s, both of those value are meet with the standard of biodiesel.
A Kinetic Study in Fermentation of Cocoa Pod Husk using Zymomonas Mobilis
Authors: Yogaswara R R , Billah M , Saputro E A , Erliyanti N K 
Published: May 2021

Abstract
In many years, bioethanol research has been an outstanding topic because of renewable energy issue. The aim of this research is focused on utilization of cocoa pod husk as a feedstock for bioethanol production through fermentation using Z. mobilis. Moreover, the kinetic model of cocoa pod husk fermentation using Z. mobilis as a microorganism was also preformed in this study. Fermentation of cocoa pod husk was carried out at room temperature for 0, 2, 4, 6, and 8 days of reaction. The bacteria were also varied with 8%, 10%, 12%, 14%, and 16% (v/v) of concentration towards the substrate mixture. The kinetic model was conducted by Michaelis – Menten equation followed by Eadie-Hofstee plot and batch kinetic data plot for its fitting parameter technique. The result of this study indicates that the slow reaction has occurred regarding the low value of conversion and small value of maximum reaction velocity. The highest conversion was achieved on the 8th day with 14% (v/v) of bacteria concentration that is 10.65%. The maximum velocity of reaction for 16% (v/v) of bacteria addition was obtained at approximately 0.0017 mol/L.hour.
Operational Technical Study of Waste Management in The Region of Ponorogo Disctrict
Authors: Rahmadyanti Erina , Dzakiyati Tika Nala 
Published: May 2021

Abstract
Waste is still a problem in various countries, especially developing countries. The problem of waste in big cities is different from small and medium cities. The amount of waste tends to increase along with population growth and an increase in living standards is not accompanied by the availability of adequate infrastructure, especially in waste management operations. Ponorogo Regency is one of the small cities in the province of East Java that has failed for 4 consecutive years to win Adipura because of poor evaluation on aspects of waste management. This study aims to examine the availability of infrastructure, especially technical waste management operations in small cities with a case study in Ponorogo Regency. The results show that in 2026 the projected population of Ponorogo Regency is 147,519 people with a volume of garbage generation of 442,556 m3/day. The amount requires availability of 246 units of carts, 16 units of dump truck, 71 units of containers at the transfer station, as well as the expansion of Mrican landfills to 5.4 hectares.
The Nori Gracilaria sp. with a Variation of Stabilizers as Healthy Food
Authors: Rosida Dedin Finatsiyatull , Putri Nurani Fesdila , Danil Ilmi Muhammad Ibnu Ma’ 
Published: May 2021

Abstract
Nori is a traditional Japanese food made from red seaweed (Porphyra) which is currently still imported. In this study, nori was made from local seaweed raw materials, namely seaweed (Glacilaria sp.) With the addition of a texture stabilizer which aims to improve product quality, so that nori products with characteristics such as commercial nori are obtained. In making nori Gracilaria sp. In this case, the addition of texture-enhancing ingredients, including: chitosan, gelatin and pectin. This study aims to create a nori product that has a texture and taste that consumers like. Chitosan, gelatin and pectin are widely used as stabilizing / stabilizing components due to their ability to form a thin gel that can form products that are strong, elastic, flexible and difficult to tear. The research method used a factorial completely randomized design (CRD) with two factors and two replications. The first factor is the type of texture stabilizer: (chitosan, gelatin and pectin) and the second factor is the concentration of the addition of the texture stabilizer: (2%, 3%, 4%). The best research results were obtained in the addition of 3% gelatin stabilizer which produced nori with 5.42% moisture content, 4.53% ash content, 11.29% protein content, 12.40 (N) tensile strength with the highest ranking value. aroma 109, flavor 124 and texture 114.4.
Environmentally friendly plastic tiles for substituting wooden board, and its processing machine design
Authors: Akhmad Sabarudin , Arendra Anis , Mu’alim  
Published: May 2021

Abstract
Plastic waste has become a global problem because it cannot be degraded in nature and in its manufacturing process requires non-renewable resources. For this reason, we need communal awareness to reduce, reuse and recycle plastic. Participating in this awareness, this paper intends to design plastic tiles made from plastic waste to replace natural wooden boards. Wooden boards are industrial forestry products that are becoming more and more expensive because of forestry wood materials are now increasingly scarce. Plastic used as raw material for the plastic tiles is recovered from the land fill. This study also worked on the design of equipment to process plastic waste into plastic tiles. This plastic hot press machine is made of a UNP steel frame. The top heating plate and bottom heating plate use CNC milled aluminum alloy equipped with 8×500 Watts cartridge heater. The heating plate temperature is set with the temperature controller. And the pneumatic piston of 80mm bore × 200mm stroke, 10 Bar, controlled by Outseal PLC. The plastic hot press machine produces two plastic tiles of 240mm×340mm×5mm size, weighing 387gr each, in 110 minutes. Tensile test according to ASTM D638 standard on product specimens shows tensile strength up to 18.0MPa.
Cross-sectional texture of sago fiber due to liquid smoke treatment
Authors: Muslimin M , Kamil K , Wardana I.N.G. 
Published: May 2021

Abstract
This study aims to show the texture cross-section of the sago fiber after treatment of liquid smoke. Sago fiber was soaked in a container filled by liquid smoke then heated at 43 °C for 1, 2, 3, 4, and 5 hours. SEMs were carried out to observe the treatments results on the surface of fiber. The results showed that fiber texture before treatment was covered by lignin layers, but after treatments, the fiber had a cross-sectional changes in form of visible pores formations on the fiber textures, distinguished by the soaking periods.