Garuda - Garba Rujukan Digital

Bitcoin mining, the way to process transaction information or the way to make money? Jiangdong Cao; Wei Cao
INSIST Vol 4, No 1 (2019)
Publisher : Universitas Lampung

Bitcoin is a crypto currency introduced by Satoshi Nakamoto in 2008. It has the features of decentralization cross-border and fixed total amount and has become one of the most widely used crypto-currencies. Bitcoin, as a new digital currency system, innovatively makes the use of cryptographic elements and consensus mechanisms and builds up a secure decentralized system. The Blockchain, as the core of Bitcoin, uses peer-to-peer network communications and backs up transaction data in every node of the system, thus creating a huge distributed public book. It is essentially a decentralized distributed ledger database, and the decentralization means that the transaction is broadcast to the entire network, where everyone is involved in book keeping. In order to make every participant in the Blockchain willing to participate in the bookkeeping, the reward mechanism of the Bitcoin system is mining. This article first introduces the concept of Blockchain technology, then expounds the principle and the operation mechanism of the Bitcoin and the Bitcoin mining principle, introduces an example of Bitcoin mining in-depth study and analysis, finally, summarize and prospect the development of the Bitcoin mining.

INFORMATION TECHNOLOGY-BASED ASSESSMENT DEVELOPMENT MODEL FOR RHYTHMIC GYMNASTICS REFEREES IN SEMARANG CITY Oktaviana, Intan; Soegiyanto, Soegiyanto; Rifai, Achmad
Journal of Physical Education and Sports Vol 9 No 1 (2020): January 2020
Publisher : Study Program Education and Sports, Postgraduate Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (559.957 KB)

This study aims to produce information technology-based products that can be used as a rhythmic gymnastic referee in processing the score of information technology-based rhythmic gymnastics matches in the city of Semarang. This research is research and development. The subject of this research is the rhythmic gymnastic referee in the city of Semarang. Data collection is done by interview survey techniques, documentation studies, and observations. The data obtained were analyzed using qualitative methods. This research produces a product in the form of a rhythmic gymnastics competition assessment application, which is a website with the address www.rhythmicgymnasticswimilia.com which can be accessed by rhythmic gymnastics referees using a smartphone or laptop. A validity test conducted by experts produces a value of 95%. This value shows that the information technology-based rhythmic gymnastics assessment model is in the very good category. So it can be concluded that the rhythmic gymnastics assessment model based on information technology can be applied in the evaluation of rhythmic gymnastics competitions.

Mapping of Landslide Prone Areas in Regencies South Tapanuli Based on Geographic Information System Sri Mulyani Siregar; Riki Rahmad
SPATIAL: Wahana Komunikasi dan Informasi Geografi Vol 19 No 2 (2019): Spatial : Wahana Komunikasi dan Informasi Geografi
Publisher : Department Geography Education Faculty of Social Science - Universitas Negeri Jakarta

The potential for land movement in South Tapanuli Regency included in the high hazard potential. South Tapanuli Regency is in an area with a high elevation, and the region is in a large fault zone of Sumatra and high rainfall. The purpose of this study was to determine the spatial distribution of landslide vulnerability in the South Tapanuli Regency. The method used in this study is a qualitative descriptive survey and using the landslide vulnerability method with parameters: natural factors and management. The analysis used in this study is an overlay of predetermined parameters and weighting. The results showed that the area of South Tapanuli Regency divided into 4 (four) landslide hazard classes, which were slightly vulnerable, somewhat vulnerable, vulnerable and very vulnerable with an area of 183 km² or 4.20%, 825.66 km² or 18.95 %, 2,092.58 km² or 48.04% and 1,254,253 km² or 28.78%. And the most dominant is the vulnerable class. For the vulnerable class, there are only a few weak areas, namely in the District of Muara Batang Toru, precisely in the villages of Lumut and Janji Maria. For class vulnerability, it is somewhat vulnerable to dominate almost all of Batang Angkola and Muara Batang Toru and South Angkola Districts around Tolang Jae village. For the vulnerable class, Rawan dominates in the Districts of Batang Toru, Sayur Matinggi Sipirok, Aek Bilah, and Saipar Dolok Hole. And for the vulnerable class, it is very vulnerable to dominate in the Districts of Marancar, Sipirok, Ass, and South Angkola.

Ten Golden Rules for Applying Life Cycle Information Jim Fava
Indonesian Journal of Life Cycle Assessment and Sustainability Vol 3, No 2 (2019)
Publisher : Indonesian Life Cycle Assessment Network (ILCAN)

We have seen rivers burning, marine litter growing, climate change impacts increasing, limited resources to name a few. Often our resources are directed towards actions which we create unexpected impacts elsewhere, because we have not considered the full range of impacts along a product life cycle. Life cycle assessment has increasing become a tool of choice to understand the environmental and social trade-offs associated with product and packaging systems. What have we learned that can accelerate the generation and use of life cycle information to inform decision making? As we are approaching nearly 30 years of experiences, there is much still to do to develop the capacity and capabilities to generate and use life cycle information to ensure we are working on the right issue, at the right place in the value chain, and by the right groups. We see a future where products will be designed, manufactured, used and managed at the end of life in ways to create reduced environmental and social impacts than the previous generation. These innovative products will create business value, e.g., growing revenue, enhancing brand, reducing costs, and mitigating risk). All actors over a product’s life cycle have a role. New business models will surface. These outcomes are happening now, but not at the scale needed. Based upon nearly 30 years of experiences, we have identified Ten Golden Rules for applying life cycle information. These will be described with examples and guidance on how they can be applied within your own organization.

Politeness Strategy in Students Lingua to Their Lecturers Via WhatsApp at Information Technology Department of Technical Faculty Universitas Bhayangkara Jakarta Raya Hafizah Hafizah
AKSIS: Jurnal Pendidikan Bahasa dan Sastra Indonesia Vol 3 No 2 (2019): AKSIS: Jurnal Pendidikan Bahasa dan Sastra Indonesia, Volume 3 Nomor 2, Desember
Publisher : Indonesian Language and Literature Education Study Program and LPPM State University of Jakarta (Program Studi Pendidikan Bahasa dan Sastra Indonesia dan LPPM Universitas Negeri Jakarta)

The purpose of this research is to know politeness strategy used by students to communicate with lecturers through short messages WA (WhatsApp). The data source in this research is the speech from students to lecturers. The research method used is a qualitative descriptive method through three stages, namely data collection, data analysis, and presentation of the results of the analysis. The results showed that students used the politeness strategies of Brown and Levinson when communicating with their lecturers via text messages WA (WhatsApp). The words "please" and "ask for help" are used when speaking frankly, the use of the word "sorry" ethics is speaking with positive politeness, using direct names for speech with negative politeness, and using ambiguous words in communicating vaguely. From the research results, it can be seen that students have a politeness strategy that is used when communicating with lecturers. Keywords: politeness politeness strategies, students and lecturers, WhatsApp Abstrak Tujuan penelitian ini adalah untuk mengetahui bentuk strategi kesantuan berbahasa yang mahasiswa gunakan dalam berkomunikasi dengan dosen melalui pesan singkat WA (WhatsApp). Sumber data dalam penelitian ini adalah tuturan dari mahasiswa kepada dosen. Metode penelitian yang digunakan adalah metode deskriptif kualitatif melalui tiga tahapan, yaitu pengumpulan data, analisis data, dan penyajian hasil analisis. Hasil penelitian menunjukkan bahwa mahasiswa menggunakan strategi kesantunan berbahasa Brown dan Levinson ketika berkomunikai dengan dosen mereka melalui pesan singkat WA (WhatsApp). Kata “silakan” dan “minta tolong” digunakan ketika bertutur dengan terus terang, penggunaan kata “maaf” Ketika bertutur dengan kesantunan positif, penggunaan nama langsung untuk tuturan dengan kesantunan negatif, dan menggunakan kata-kata yang ambigu dalam berkomunikasi dengan samar-samar. Dari hasil penelitian dapat diketahui bahwa mahasiswa mempunyai strategi kesantunan berbahasa yang digunakan ketika berkomunikasi dengan dosen. Kata Kunci: strategi kesantunan berbahasa, mahasiswa dan dosen, WhatsApp

Design of Web-Based Material Management Information System in Financial Module (Case Study PT INTI) Selvyananda Adelita Vanesia; Rachmadita Andreswari; Faishal Mufied Al Anshary
International Journal of Innovation in Enterprise System Vol 2 No 02 (2018): International Journal of Innovation in Enterprise System
Publisher : School of Industrial and System Engineering, Telkom University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25124/ijies.v2i02.23

PT INTI engaged in telecommunication, has long become a supplier of network construction with a large scale that is national. Therefore, PT INTI has a lot of material and spread all over the city in Indonesia. Previously, PT Inti still uses semi-manual way to do their material recording. The material recording is done by using Microsoft Excel which will be sent by electronic mail (email) if needed. But it is vulnerable to errors because the data contained in is not integrated. To overcome this, PT INTI wants to have a web based application called INTI Maintenance to manage financial materials such as material input, material search, material removal, material search, material data printing, to finance such as request addition, change of request status, delivery, and residual balances of each city. INTI Maintenance web-based information system financial module is built with open source software that uses PHP as the programming language, MySQL as the database, and Windows as server computer. The final results achieved in the material management information system in this module have advantages in assisting PT INTI employees in managing financial data and validation for material delivery using receipt of delivery material. Keywords—information system, management, material, finance.

An information technology-based learning approach to reduce math anxiety in solving problems Herfa Maulina Dewi Soewardini; Hery Setiawan; Suhartono Suhartono; Siti Maghfirotun Amin; Abdul Talib Bin Bon
Journal of World Conference (JWC) Vol. 2 No. 1 (2020): January 2020
Publisher : NAROTAMA UNIVERSITY, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/prd.v2i1.114

Students who experience anxiety can influence how these students to think, reason, and do actions to solve problems in mathematics subjects, especially about triangles. The solution used to reduce the level of mathematics anxiety of students is to use an information technology-based learning approach. The purpose of this study is to describe whether information technology-based learning and communication can reduce mathematics anxiety of grade 7 students. This classroom action research consists of two cycles with the initial stage of setting targets for achieving indicators of research success. The results showed that the average level of anxiety of students classified as high, namely 92, then decreased to 82 in the first and 70 cycles at the end of the second cycle. While the percentage of implementation of information technology-based learning at the end of the first cycle was 80.25% and at the end of the second cycle was 91%.

The Effect Of Building Information Modeling (BIM) Skill For Construction Organization Achievement On The Success The Company Ronny Durrotun Nasihien; Dika Yuniarsi
Journal of World Conference (JWC) Vol. 2 No. 1 (2020): January 2020
Publisher : NAROTAMA UNIVERSITY, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/prd.v2i1.122

Optimizing the achievement of organizational / company goals is largely determined by effectiveness. More at this time in the AEC industry (Architecture, Engineering & Construction) the term BIM is often heard. That is a technology that in its development uses less time, labor and capital. This study aims to study whether it is necessary to develop BIM towards achieving a company's success. This study uses qualitative and quantitative methods. Respondents of the experimental study were 39 people. The data used are primary and secondary data obtained through observation, literature and questionnaires. Data analysis techniques with validity and reliability test. The results of the study show that expertise supported by BIM-based technology is against the achievement of company success, analysis shows valid and reliable results. This is also supported by type variables, which are adjusted to the qualifications needed by the company. The percentage obtained from the sex variable was 87.2%, female 12.8%. The conclusion of this study is that the higher the level of skills supported by gender variables, the success and achievement of the objectives of the work will increase. Suggestions for leaders to develop skills, especially for employees who have the potential and higher education in special sections to support better results.

DESIGN OF INFORMATION AND TECHNOLOGY BASED TEACHING MATERIALS IN MATHEMATICS SUBJECTS OF IT HIGH SCHOOL PEKANBARU STUDENTS Rahmadani, Heni; Roza, Yenita; Murni, Atma
MEJ (Mathematics Education Journal) Vol 4, No 1 (2020)
Publisher : Study Program of Mathematics Education University of Muhammadiyah Malang

This research is based on the low mathematical representation ability of students and the lack of textbooks used by teachers in presenting teaching material. This study aims to describe the results of the development of information technology-based teaching materials to improve the mathematical representation ability of students in class X Trigonometry Function Materials that are valid, practical, and effective. The model used in this research development is the ADDIE development model, namely Analysis, Design, Development, Implementation, and Evaluation. The research instruments used in this article are validation sheets (validity aspects), teacher assessment sheets and student assessment sheets (practical aspects), and mathematical representation ability tests (effectiveness aspects). Analysis of the data used in this research is parametric statistics, the t-test with the help of SPSS 18.00 using the Independent-Sample t-Test. This research resulted in a product of teaching materials based on information and technology in valid mathematics (87.11%), practical (90.81%) and effective (0.043 <0.05).

Inventory and Sales Information System Design on Clothing Store (Case Study: X Fashion, Jakarta) Yulia Rosa; Marsellinus Bachtiar Wahju
Jurnal Logistik Indonesia Vol 4, No 1: April 2020
Publisher : Institut Ilmu Sosial dan Manajemen Stiami

The progress of time continually accompanied by the development of technology. It leads to the competition among industries that require them to have superiority to attract more consumers. X Fashion is one of the fashion industries which sells various apparel products for people in the sale of large or small scale. The business processes of X Fashion is procuring products, managing inventory, sales, and managing finance. A lot of variations and number of products in the store are not in balance with a good management because all forms of recording are done manually. It causes potential error so that the information disseminated is inaccurate. Based on this consideration, a research is conducted as inventory and sales information system design on X Fashion clothing store to identify business process also to design an inventory and sales information system on X Fashion clothing store. The method used is Systems Development Life Cycle which consists of systematic steps for developing, designing, and maintaining the system to meet the needs of users, including supervision, recording, and reporting. Information system is designed to provide stock data, expense, and income reports automatically. Testing of the system includes system testing, function testing, learnability, logic testing, memorability, and measurement of satisfaction. Based on the test results, the information system was stated feasible and can be used to support business processes on X Fashion clothing store. Suggestions for further research on information system design are development of system design in order to be compatible on smartphone, also an addition of brief information on every control or using user guide in order to describe system function

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