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JOINCS (Journal of Informatics, Network, and Computer Science)
Published by Universitas Muhammadiyah Sidoarjo
ISSN : -     EISSN : 25415123     DOI : https://doi.org/10.21070/joincs
Core Subject : Science,
Computer Science & IT
JOINCS publishes original research papers in computer science and related subjects in system science, with consideration to the relevant mathematical theory. Applications or technical reports oriented papers may also be accepted and they are expected to contain deep analytic evaluation of the proposed solutions. JOINCS also welcomes research contributions on the traditional subjects such as : Theory of automata, algorithms and its complexity. But not limited to contemporary subjects such as: • Big Data • Internet of thing (IoT) • Parallel & distributed computing • Computer networks and its security • Neural networks • Computational learning theory • Database theory & practice • Computer modelling of complex systems • Decentralized Systems • Information Management in the Enterprise Context • Database related technical solutions for Information Quality • Information Quality in the context of Computer Science and Information Technology • Game Techology • Information System
Arjuna Subject : Ilmu Komputer (semua kategori) - Ilmu Komputer (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol 1 No 1 (2017): April" : 5 Documents clear
Design of Monitoring System Step Walking With MPU6050 Sensor Based Android Diah Ayu Fitriani; Wahyu Andhyka; Diah Risqiwati
JOINCS (Journal of Informatics, Network, and Computer Science) Vol 1 No 1 (2017): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (420.736 KB) | DOI: 10.21070/10.21070/joincs.v1i1.799

Abstract

Walking is said to increase endurance, burn calories and improve cardiovascular health. To monitor the steps when walking, we need a tool that is a gyroscope sensor MPU6050. Making this tool uses a gyroscope sensor for monitoring footsteps because Gyroscope is used to measure or determine the orientation of an object based on the provisions of angular momentum. This tool has been tested by foot with a number of different steps. The device test carried out by one person testers.Data obtained from these tests resulting from the detection lower limit value and upper limit value of X axis angle data is used in data processing is the value of the X-axis is converted into a sine wave form chart. To detect footsteps, each wave has the upper value limit is 20o and the bottom value is -20o. Once the step is detected, these measures will be multiplied by the width of the foot when walking, then obtained distance
Educational Ball Labyrinth Game Using Accelerometer Sensor as a Media for Introducing National Capitals in the World Ericka Sukma Putri Wilujeng; Yulian Findawati
JOINCS (Journal of Informatics, Network, and Computer Science) Vol 1 No 1 (2017): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (988.373 KB) | DOI: 10.21070/10.21070/joincs.v1i1.800

Abstract

Learning through games is one of the good methods to reduce the students’ boredom during teaching and learning process. The android game,a maze, displays the capital city of the world. It will be useful for the learning process. The appearance of the capital used is only limited to Asia. The name of game is Maze, a unique game loved by many phone users. The applications use free software from google, namely inventor app and as a ball mover, we use an accelerometer censor in which we move the phone to move the ball. The application is presented with different challenges such as a poin deduction when it touches the wall, the enemies can move the player to start point, the wall hurdle moves. Therefore, from those obstacles are expected to add the excitement of the game.
Analysis of User Experience and Cognitive Psychology Approaches to the Convenience of KRS-Online Information System Users as Material for System Evaluation and Development Kurnia Manggali Utamaningrum; Wahyu Andhyka; Evi Dwi Wahyuni
JOINCS (Journal of Informatics, Network, and Computer Science) Vol 1 No 1 (2017): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.841 KB) | DOI: 10.21070/10.21070/joincs.v1i1.801

Abstract

The implementation of the academic information services, UMM has been trying to present some system of academic services for the various students needs, one of the highlights is KRS-Online system because it is the most frequently used system of students in programming courses in each semester.Complaints and suggestions certainly are reasonable for the system services are used by many people.This study aimed to KRS-Online users’ convenience can be measured empirically based indicators of variable users’ experience and cognitive psychology to prove whether these two variables can affect the users’ convenience.Based on this research, it has been proved that the users’ experience and cognitive psychology significantly affect both users’ convenience variables partially tested individually or simultaneously or together.
JSON Implementation to Minimize the Use of the Number of Columns of a Table in a PostgreSQL Database Mochamad Alfan Rosid
JOINCS (Journal of Informatics, Network, and Computer Science) Vol 1 No 1 (2017): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (455.319 KB) | DOI: 10.21070/10.21070/joincs.v1i1.802

Abstract

On the development of the database currently has become a very important thing, each will plan something, consider any thing we will need and use existing data in a database, The development of the database currently has become a very important thing, when we want to plan something and consider everything, we will need and use existing data in a database, PostgreSQL is one Object Relational Database Management Systems (DBMS) open source with a lot of features that are not less sophisticated to commercial databases. On daily use, it sometimes occurs a case that requires a dynamic column, therefore we should make the new columns to meet those needs. However, if each row of the table column requires different column and potentially need another ones, then it is going to be useless. On the research of utilizing the technology of JavaScript Object Notation (JSON),Json_encode PHP programming language can simplify the use of the column so that a new column is no longer needed when we want to create a new column on the table, we only need a new column that stores an array that has been converted into a JSON string forms the result of json_encode that represents the column name and the content of the columns of a table.
Design and Build a Fall Detection Monitoring System for the Elderly Using an Accelerometer Siti Norhabibah; Wahyu Andhyka; Diah Risqiwati
JOINCS (Journal of Informatics, Network, and Computer Science) Vol 1 No 1 (2017): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (447.853 KB) | DOI: 10.21070/10.21070/joincs.v1i1.803

Abstract

Elderly is a last transitional period of human life. Decrease or disappearance of organ function such as loss of balance, reduced vision and hearing cause the elderly often fall. The limited physical ability of them requires supervision. Supervision is necessary to avoid undesirable thing occurs. Here, a tool called accelerometer can be used to supervise and monitor whether the fall incident occurs or not to the elderly. In this study, the magnitude of the acceleration in x, y, and z axes of the accelerometer sensor is processed into a total value of acceleration. Then the value will be compared with the lower threshold value and the higher threshold value. After that the total value of the acceleration is compared again with the threshold value of the total value orientations. The total value of acceleration is used to distinguish between regular activity and falling. The results of this study indicate that the system developed has the sensitivity values of 89% and specificity of 98%.

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