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Free vibration of orthotropic Levy-type solution plates by using SEM

IOP Conference Series: Materials Science and engineering 2019年第1期615卷

作者： S Kiryu S W Alisjahbana I Alisjahbana A L Han B S Gan Department of Architecture Graduate School of Engineering Nihon University Koriyama Japan Faculty of Engineering and Informatics Bakrie University Jakarta Indonesia Department of Civil and Environmental Engineering Master Program Student Stanford University California USA Civil Engineering Department Faculty of Engineering Universitas Diponegoro Semarang Indonesia Department of Architecture College of Engineering Nihon University Koriyama Japan

Orthotropic Levy-type solution plates considering shear deformation were solved by using the Spectral Element Method (SEM). In SEM, the exact solution of structural dynamic related problems can be solved by using the frequency-dependent shape functions. The solutions of SEM are accurate in decreasing the amount of Degree Of Freedoms (DOF) to discard the cost and computational disadvantages in the Finite Element Method (FEM). This study investigates the free vibration problems of orthotropic Levy-type solution plates solutions based on the two variable Refined Plate Theory (RPT). SEM for orthotropic Levy-type solution plates in the frequency domain was formulated to solve free vibration problems. The differential governing equations of the orthotropic plate element in SEM are formulated into the form of transcendental stiffness matrices. The boundary conditions of the spectral element model consist of four edge-type DOFs at each side of the orthotropic Levy-type solution plates. The natural frequencies of the plate are calculated by means of the Wittrick-Williams procedure. The numerical investigations are presented to show the accuracy, efficiency, and effectiveness of SEM without any discretization scheme.

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Analysis backpropagation methods with neural network for prediction of children's ability in psychomotoric

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Journal of Physics: Conference Series 2018年第1期978卷

作者： F Izhari H W Dhany M Zarlis Sutarman Informatics Engineering Study Program Master Faculty of Computer Science and Information Technology Universitas Sumatera Utara Medan Indonesia

A good age in optimizing aspects of development is at the age of 4-6 years, namely with psychomotor development. Psychomotor is broader, more difficult to monitor but has a meaningful value for the child's life because it directly affects his behavior and deeds. Therefore, there is a problem to predict the child's ability level based on psychomotor. This analysis uses backpropagation method analysis with artificial neural network to predict the ability of the child on the psychomotor aspect by generating predictions of the child's ability on psychomotor and testing there is a mean squared error (MSE) value at the end of the training of 0.001. There are 30% of children aged 4-6 years have a good level of psychomotor ability, excellent, less good, and good enough.

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The comparison study between distinct physical fitness norms and their ECG signals under graded exercise intensities and recovery

The comparison study between distinct physical fitness norms...

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2017 IEEE International Conference on Applied System Innovation, ICASI 2017

作者： Lin, Shyan-Lung Lin, Tung-Yi Huang, Cheng-Yi Hsu, Yu-Liang Chang, Hsing-Cheng Department of Automatic Control Engineering Feng Chia University 100 Wenhwa Rd. Seatween Taichung Taiwan Master's Program of Biomedical Informatics and Biomedical Engineering Feng Chia University 100 Wenhwa Rd. Seatween Taichung Taiwan Office of Physical Education and Sports Affairs Feng Chia University 100 Wenhwa Rd. Seatween Taichung Taiwan

ISBN: (纸本)9781509048977

In this paper, we perform the comparison study of ECG signals for subjects at distinct ends of cardiopulmonary fitness. The cardiopulmonary signals were acquired under rest condition, three graded exercise intensities, and recovery periods. The participants were recruited from university freshmen with cardiopulmonary fitness norm in top, middle, and bottom groups. Spectral analysis was performed to study the hear rate variability (HRV) from recorded ECG signals. From the view of biomedical signal and statistical analysis, results of current study are expected to provide valuable scientific basis for further evaluation of physical fitness assessment and exercise reinforcement. © 2017 IEEE.

关键词： Electrocardiograms

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Hierarchical clustering algorithms with automatic estimation of the number of clusters

Hierarchical clustering algorithms with automatic estimation...

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Joint World Congress of International Fuzzy Systems Association and International Conference on Soft Computing and Intelligent Systems (IFSA-SCIS)

作者： Ryosuke Abe Sadaaki Miyamoto Yasunori Endo Yukihiro Hamasuna Master's Program in Risk Engineering University of Tsukuba Tsukuba Ibaraki Japan University of Tsukuba Tsukuba Ibaraki Japan Department of Informatics Kinki University Osaka Japan

ISBN: (纸本)9781509049189

The problem of estimating appropriate number of clusters has been a main and difficult issue in clustering researches. There are different methods for this in hierarchical clustering; a typical approach is to try clustering for different number of clusters, and compare them using a measure to estimate cluster numbers. On the other hand, there is no such method to estimate automatically the number of clusters in agglomerative hierarchical clustering (AHC), since AHC produces a family of clusters with different cluster numbers at the same time using the form of dendrograms. An exception is the Newman method in network clustering, but this method does not have a useful dendrogram output. The aim of the present paper is to propose new methods to automatically estimate the number of clusters in AHC. We show two approaches for this purpose, one is to use a variation of cluster validity measure, and another is to use statistical model selection method like BIC.

关键词： Indexes Couplings Linear programming Clustering algorithms Merging Estimation Iris

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The gap values in the profile matching method by fuzzy logic

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Journal of Physics: Conference Series 2018年第1期978卷

作者： S A Sitepu S Efendi Z Situmorang Master Program (S2) of Informatics Engineering Faculty of Computer Science and Information Technology Universitas Sumatera Utara Medan Indonesia. Master Program of Informatics Engineering Faculty of Computer Science and Information Technology Universitas of Sumatera Utara Medan Indonesia. Department of Computer Science Faculty of Computer Science and Information Technology Universitas St. Thomas Medan Indonesia.

In this research, the determination of the appropriate values of Gap for the assessment of promotion criteria of position in an institution / company. In this study the authors use Fuzzy Sugeno logic on the determination of Gap values used in Profile Matching method. Test results of 5 employees obtained the eligibility of promotion with the position of Z* values between in 3.20 to 4.11.

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Identification of rice supply chain risk to DKI Jakarta through Cipinang primary rice market

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IOP Conference Series: Earth and Environmental Science 2018年第1期106卷

作者： D Sugiarto A Ariwibowo I Mardianto D Surjasa Information System Program Faculty of Industrial Technology Universitas Trisakti Jakarta Indonesia Informatics Program Faculty of Industrial Technology Universitas Trisakti Jakarta Indonesia Industrial Engineering Master Program Faculty of Industrial Technology Universitas Trisakti Jakarta Indonesia

This paper identifies several sources of risks in DKI Jakarta rice supply chain that through Cipinang Primary Rice Market (CPRM). Secondary data from several sources were collected and analysed using pareto chart and time series analysis. Based on the pareto analysis, it was known that there was a change in the order of suppliers whereas in 2011, 80% of the supply came only from Cirebon, Karawang and Bandung (West Java Province). While in 2015 the main source of supply changed to Cirebon, Central Java and Karawang. Linear trend equation using decomposition model for Cirebon and Karawang showed trend of decreasing monthly supply while Central Java had a positive trend. Harvest area of wetland paddy in Cirebon and Karawang showed a negative trend in the last 6 years. The data also showed that West Java Province was the province with the largest rice crop area affected by plant organism attack and drought disaster in 2015. DKI Jakarta had several potential supply chain risks from rice supply, drought risk and pests risk where the province of West Java, which previously could become a major supplier began to require supply assistance from other provinces, especially Central Java.

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Naïve Bayes Approach for Expert System Design of Children Skin Identification Based on Android

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IOP Conference Series: Materials Science and engineering 2018年第1期333卷

作者： Hartatik A Purnomo R Hartono H Munawaroh Informatics Engineering Department Faculty of Mathematics and Natural Sciences Sebelas Maret University Surakarta Indonesia Chemistry Department Master Program Graduate School Sebelas Maret University Surakarta Indonesia

The development of technology gives some benefits to each person that we can use it properly and correctly. Technology has helped humans in every way. Such as the excess task of an expert in providing information or answers to a problem. Thus problem that often occurs is skin disease that affecting on child. That because the skin of children still vulnerable to the environment. The application was developed using the naïve Bayes algorithm. Through this application, users can consult with a system like an expert to know the symptoms that occur to the child and find the correct treatment to solve the problems.

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Development of Applications about Hazards and Preventions of Drug Based On Android

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IOP Conference Series: Materials Science and engineering 2018年第1期333卷

作者： Hartatik F Febriyanto H Munawaroh Informatics Engineering Department Faculty of Mathematics and Natural Sciences Sebelas Maret University Surakarta Indonesia Chemistry Department Master Program Graduate School Sebelas Maret University Surakarta Indonesia

The number of drug abuse was increase among the younger generation, it caused younger generation fall into drug abuse, and it will lead to physical and mental damage. The lack of knowledge of drugs danger is one of the most potential problems, so in this study we made an application about the types, dangers, and how to avoid its abusement. The application built using PHP programming language with codeiniter framework on admin part, while the parsing data between mobile application server using Javascript Object Notation (JSON). This application has been tested and 85% respondents stated that this application provides positive benefits especially for the socialization of drug abuse.

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Hybrid cryptosystem RSA – CRT optimization and VMPC

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Journal of Physics: Conference Series 2018年第1期978卷

作者： R Rahmadani H Mawengkang Sutarman Master Program (S2) of Informatics Engineering Faculty of Computer Science and Information Technology Universitas Sumatera Utara Medan Indonesia. Department of Mathematics Faculty of Mathematics and Natural Sciences Universitas Sumatera Utara Medan Indonesia.

Hybrid cryptosystem combines symmetric algorithms and asymmetric algorithms. This combination utilizes speeds on encryption/decryption processes of symmetric algorithms and asymmetric algorithms to secure symmetric keys. In this paper we propose hybrid cryptosystem that combine symmetric algorithms VMPC and asymmetric algorithms RSA – CRT optimization. RSA – CRT optimization speeds up the decryption process by obtaining plaintext with dp and p key only, so there is no need to perform CRT processes. The VMPC algorithm is more efficient in software implementation and reduces known weaknesses in RC4 key generation. The results show hybrid cryptosystem RSA – CRT optimization and VMPC is faster than hybrid cryptosystem RSA – VMPC and hybrid cryptosystem RSA – CRT – VMPC. Keyword : Cryptography, RSA, RSA – CRT, VMPC, Hybrid Cryptosystem.

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Analysis of user readiness toward ICT usage at small medium enterprise in south tangerang

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Journal of Physics: Conference Series 2018年第1期1007卷

作者： D Napitupulu M Syafrullah R Rahim D. Abdullah MI Setiawan Research Center for Quality System & Testing Technology Indonesian Institute of Sciences Tangerang Selatan Banten Indonesia Program of Master of Computer Science Universitas Budi Luhur Indonesia School of Computer and Communication Engineering Universiti Malaysia Perlis Malaysia Department of Informatics Universitas Malikussaleh Aceh Indonesia Department of Civil Engineering Narotama University Surabaya Indonesia

Utilization of Information and Communication Technology (ICT) is still relatively low in the level of SMEs due to various limitations ranging from access to capital, till the marketing network. ICT is present to provide the ability for SMEs in improving the benefits and competitive advantage of the organization. This study aims to determine the level of readiness of SMEs in utilizing technology, especially ICT. The methodology used is a survey to see the technology readiness of 107 SMEs in South Tangerang selected by purposive sampling. The approach used is TRI (Technology Readiness Index) which is the individual perception of technology based on four criteria that is optimism, innovativeness, discomfort and insecurity. The results showed that the optimism and innovativeness variables significantly positively influence the technology readiness while the variables of discomfort and insecurity also significantly positively influence the readiness of ICT.

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