GENERATING NUMERICAL MULTIBODY MODEL OF TOOTHED BELT IN TECHNOLOGICAL MACHINES WITH SIEMENS NX

So far, in computer-aided modelling programs, there have not been implemented tools for the automatic generation of a dynamic model of an elastic belt transmission, created in the form of a multibody system. The publication presents reflections on this issue. There were developed scripts allowing one to automatically obtain the appropriate arrangement of links with respect to each other and to create the desired mechanical relations between or among them and other drive elements in the simulation. The programming bases of the proposed solutions were presented. Theoretical concepts were supported by application experiments in the Siemens NX environment. The method for the automatic generation of a multibody model of the toothed belt transmission, based on the geometric model of the latter, was developed. The work enabled the formulation of the conclusions on the development of modelling of the systems under consideration. The results of the research indicate high potential of the presented achievements. They constitute a basis for increasing the degree of computer technique aid for constructors or analysts.

Penerapan Ontology Berbasis Protégé Untuk Mengestimasi Nilai Ekonomi Cryptocurrency

Cryptoccurency is a digital currency that is used as a medium of exchange as well as rupiah and dollars. And just like currency, Cryptocurrency also experiences value volatility or commonly reffered to as fluctuation. The purpose of this study is to estimate the fluctuating cryptocurrency value by implementing it into ontology using protégé tools. With the ontology, it can make it easier for users to find information about cryptocurrency. The results of this study indicate that ontology is one of the bases of Knowledge Managament Systems which can make it easier to systematizem, improve and accelerate knowledge management so that it is easy to understand for cryptocurrency users. Another result of this research is the creation of an ontology cryptoccurency with the blockchain subclass, users, currency, economu and factors. Each of these subclasses has more subclasses in a structured manner, and the results of making computer technique ontology in estimating the economic value of cryptocurrency are useful for users or people who want to find out more information about cryptocurrency.

Image Inpainting Using Image Interpolation - An Analysis

Image inpainting is a computer technique of filling lost regions of an image by using available information from the surrounding area. This digital image inpainting technique has wider applications like image restoration, dis-occlusion and image/video compression. The traditional image inpainting approaches Partial Differential Equation (PDE) based method and Exemplar based method mainly focus on the size of the target region to be filled. PDE is a pixel oriented method and works well if the region to be filled is small. On the other hand exemplar based method is a patch based method and works well if the region to be filled is large. This paper proposes another new technique called image interpolation technique and describes how this technique can be used effectively for image inpainting without giving much focus on the size of the target region.

SISTEM PENDUKUNG KEPUTUSAN UNTUK PENENTUAN JURUSAN SISWA DENGAN MENGGUNAKAN LOGIKA FUZZY

Penentuan jurusan siswa adalah masalah yang selalu dihadapi pada saat tahun ajaran baru di sekolah menengah kejuruan. Hal ini mendorong pihak sekolah untuk bekerja lebih cepat dan akurat ketika menentukan jurusan siswa yang terbagi kedalam tiga jurusan, yaitu rekayasa perangkat lunak, multimedia dan teknik komputer jaringan. Akan tetapi, ketiadaan sebuah sistem dalam menyelesaikan masalah tersebut menyebabkan pengolahan nilai tes dan minat siswa menjadi tidak maksimal karena keterbatasan sumber daya manusia yang mengolahnya, sehingga penentuan keputusan jurusan siswa seringkali tidak sesuai dengan rule yang telah ditetapkan pihak sekolah bahkan bersifat subjektif. Sistem Pendukung Keputusan Penentuan Jurusan Siswa (SPK-PJS) merupakan sistem terintegrasi yang dapat membantu penanganan data siswa, data nilai tes dan minat siswa dalam penentuan jurusan secara cepat dan tepat berdasarkan rule yang telah ditetapkan pihak sekolah. Pengolahan data dalam menentukan jurusan siswa akan semakin mudah, cepat dan tepat dengan adanya sistem yang dikembangkan ini. Sistem ini juga mampu melakukan manajemen data, manajemen proses, manajemen laporan yang bersifat real time dan update juga memiliki manajemen sistem keamanan yang dapat mengatur hak akses setiap pengguna yang berinteraksi dengan sistem. Pembangunan SPK-PJS diawali dengan pendefinisian sistem, analisis sistem dengan model proses Waterfall, kemudian dalam hal perangkat pemodelan digunakan diagram alir data, rancangan basis data menggunakan MySQL, rancangan antar muka sistem, implementasi dan pengujian sistem menggunakan Microsoft Visual Basic.Net 2005 dan Crystal Report 9.0.Berdasarkan pengujian yang sudah dilakukan pada SPK-PJS, secara fungsional sistem ini sudah memenuhi persyaratan prosedur sistem yang ada dan juga dapat menghasilkan keluaran yang diharapkan, sehingga sistem ini siap untuk diimplementasikan pada kenyataan sesungguhnya. Determination of student program is a case always faced in the new year of school at vocational high school. It interests the school to work quickly and accurately while determining student program which is divided into 3 programs, they are software engineering, multimedia and network computer technique. But, no existence of a system in finishing the case causes scoring input and student’s interest become not maximal due to limitation of human resource who handle it, so decision making of student program sometimes is not based on rule which is the school management even subjectively. Decision support system of student’s program determination is integrated system which can help student data handling, scoring data, interest, to determine student program quickly and accurately based on the rule which has been determined by school policy. By the existence of this system, data handling in program determination will be every easy, rapidly and accurately, so it enable to do data management, process management, a real time report management update and security system management. The development of SPK-PJS is started by defined system, analyzed system, with waterfall process model, then in modeling device is used the flowchart, basic data program using by MySQL, system interface program, implementation system examination using Microsoft Visual Basic 2005 Crystal Report 9.0. Based on the examination executed on SPK-PJS by this functional system has fulfilled system procedure requirement that provided and also can produce the expected output, so this system is ready to implement on the real fact.

HOW CORRECTLY WE TELL PUPILS ABOUT THE NUMBER OF NUMERALS IN DIFFERENT NOTATIONS?

The article proposes to take a fresh look at the traditional for any informatics course material, which describes the fundamental principles of number representation. It considers in details the ideas how different number notations are formed; special attention is paid to the problem related to the amount of numerals used for presenting values in every digit. It is shown that frequent in school informatics definition of radix as an amount of numerals that employed in a system becomes incorrect under careful review. For those who want to discuss this problem at a lesson, two ways are possible: one (stricter) is founded on mathematical formulas, and another is based on a generalization of various notation examples; both methods are presented in the article. Besides for demonstrative narrating of the material to pupils the authors designed their own analogy, which facilitates understanding of the topic. Practical application of notations to computer technique is also discussed.

The simulation of the service life of the rotary shaft of a centrifugal pump

The article describes an automated calculation of such an essential part of a centrifugal pumps the rotor shaft, so the highest level CAD NASTRAN system PATRAN module was used for the analysis. The computational mechanical scheme was drawn up, the axial and radial force acting on the impeller and the pump shaft were determined. The stress for the maximum feed case are determined. The results of the automated strength calculation were used for further analysis of the service life of the rotor shaft of a centrifugal pump. A computer technique for determining the service life of the shaft is given, taking into account the technological, mechanical conditions of operation and taking into account the projected service life equal to the lifetime of the uranium well. Using the automated MSC FATIGUE module, the number of loading cycles was determined, the service life safety factor was determined, which showed the efficiency of the pump throughout the entire operating time of the uranium well.

Relation of Lecturer’s Competency, Motivation and Utilization of Information and Communication Technologies to Job Satisfaction and Performance

The purpose of this study was to analyze the relation of competency, motivation and utilization of information and communication technologies (ICT) on job satisfaction and lecturer’s performance at five College of informatics management and computer technique in Makassar. This study uses survey data collection Cross section through a questionnaire. As many as 285 lecturers are eligible to be population and determination of a sample of 160 respondents using the formula Slovin. Data from the questionnaires were analyzed using Structural Equation Model (SEM) with AMOS assistance. The results found that the