• International Journal of Computer Science & Network Security
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• v.22 no.11
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• pp.71-76
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• 2022

The article aims to consider the role of computer technologies in contemporary jewelry art. The importance of computer programming, 3D-modeling and 3D-printing for the process of jewelry creating, its advertising and sales is emphasized. Both the positive features of the possibility of using computer technologies in jewelry and their shortcomings are considered. The process of changing the nature of jewelry design after the start of the use of digital technologies is highlighted. The issue of changing the perception and evaluation of a work of jewelry art, the creation of which uses mechanization, has been updated.

• Journal of Applied and Pure Mathematics
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• v.4 no.1_2
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• pp.9-26
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• 2022

The purpose of this work is to study the existence and continuous dependence on neutral stochastic partial integrodifferential equations with impulsive effects, perturbed by a fractional Brownian motion with Hurst parameter $H{\in}({\frac{1}{2}},\;1)$. We use the theory of resolvent operators developed in Grimmer [19] to show the existence of mild solutions. Further, we establish a new impulsive-integral inequality to prove the exponential stability of mild solutions in the mean square moment. Finally, an example is presented to illustrate our obtained results.

• Journal of the Korean Chemical Society
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• v.7 no.4
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• pp.277-279
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• 1963

The surface tension of solutions of synthesized ammonium caprylate and ammonium caprate was measured by the ring method. The changes with of surface tension of solution of ammonium caprylate showed evidently that the salt had the critical micelle concentration(c.m.c.) at $30^{\circ}C$. The c.m.c. values of above two salts were determined from the change of surface tension of solution with concentration at various temperatures. The temperature dependence of the c.m.c. and the influence of addition of excess ammonia on the c.m.c. were also investigated.

• Culinary science and hospitality research
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• v.10 no.4
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• pp.178-189
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• 2004

This study was performed to investigate the effects of pine pollen and horseradish, which were known as antimicrobial materials, on the fermentation of Kimchi. The physicochemical and microbial changes of Kimchi were investigated during period 30-days at $10^{\circ}C$. Even though Kimchi added pine pollen or horseradish powder were sustained the higher pH and lower acidity after 10 days, it delayed only 1∼2 more days to reach optimal value of Kimchi fermentation in experimental groups than control. The horseradish powder showed the antimicrobial effect of Kimchi at initial stage, but thereafter that effect of pine pollen or horseradish were not significant. Therefore the addition of pine pollen or horseradish powder to Kimchi is not sufficiently effective for extension of shelf-life of Kimchi.

• ETRI Journal
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• v.37 no.3
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• pp.502-511
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• 2015

Intrusion detection plays a key role in detecting attacks over networks, and due to the increasing usage of Internet services, several security threats arise. Though an intrusion detection system (IDS) detects attacks efficiently, it also generates a large number of false alerts, which makes it difficult for a system administrator to identify attacks. This paper proposes automatic fuzzy rule generation combined with a Wiener filter to identify attacks. Further, to optimize the results, simplified swarm optimization is used. After training a large dataset, various fuzzy rules are generated automatically for testing, and a Wiener filter is used to filter out attacks that act as noisy data, which improves the accuracy of the detection. By combining automatic fuzzy rule generation with a Wiener filter, an IDS can handle intrusion detection more efficiently. Experimental results, which are based on collected live network data, are discussed and show that the proposed method provides a competitively high detection rate and a reduced false alarm rate in comparison with other existing machine learning techniques.

• Korean Journal of Mathematics
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• v.27 no.1
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• pp.119-129
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• 2019

Balance function is one of the joint factors to determine fall in risk theory. It helps to moderate the progression and riskiness of falls for detecting balance and fall risk factors. Nevertheless, the objective measures for balance function require expensive equipment with the assessment of any expertise. We establish the existence and uniqueness of a multi-order fractional differential equations based on ${\psi}$-Hilfer operator on time scales with balance function. This class describes the dynamic of time scales derivative. Our tool is based on the Schauder fixed point theorem. Here, sufficient conditions for Ulam-stability are given.

• Honam Mathematical Journal
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• v.45 no.4
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• pp.619-628
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• 2023

In this paper, the fractional order time-varying linear dynamical systems are investigated by using a residual power series method. A residual power series method (RPSM) is constructed for this problem. The exact solution is obtained by the Laplace transform method and the analytical solution is calculated via the residual power series method (RPSM). As an application, some examples are tested to show the accuracy and efficacy of the proposed methods. The obtained result showed that the proposed methods are effective and accurate for this type of problem.

• Korean journal of food and cookery science
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• v.22 no.6 s.96
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• pp.756-767
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• 2006

This study investigated the attitudes towards business ethics of 409 University students majoring in culinary science and foodservice management. The survey questionnaire evaluated their attitudes by ATBEQ (Attitudes towards Business Ethics Questionnaire), using a seven-point scale and the data were analysed by frequency, t-test, ANOVA and reliability analysis. The average value of ATBEQ was investigated with attitudes towards ethics (3.48${\pm}$0.79), application of the ethics to business (4.24${\pm}$0.71), business profit making (4.18${\pm}$0.71), businessman (4.29${\pm}$0.67) and practice of business ethics (3.16${\pm}$0.79). The female, undergraduate and younger students showed significantly higher scores of attitudes towards business ethics (higher ethical attitude) than the male, graduate and older students, respectively. There are some similar results between Korean and Israeli students, while western students (America, Australia and Turkey) showed different attitudes with Korean students.

• Korean Security Journal
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• no.15
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• pp.73-87
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• 2008

The purpose of this study is to investigate the historical progress about Teukgongmusul as bodyguard martial arts focused on security service history through the meaning of its development and expansion. This study used secret materials from presidential security service, military service headquarters and special merit unit in Korea, and also used interview materials by oral history. For the above tasks, the conclusions of this study are as follows: Firstly, consideration about the background and circumstances of Teukgongmusul when it was developed in 1970s. No.606 special merit unit's soldiers who worked in presidential security service in Korea organized Teukgongmusul. Secondly, consideration about the meanings of Teukgongmusul presented through its development and expansion process. Teukgongmusul was bodyguards' martial arts which was based on Army's martial arts in 1970s. For this reason, Teukgongmusul now has the perception as Bodyguard Martial Arts. Thirdly, consideration about the expansion process of Teukgongmusul when it was adopted in Army and presidential security service in Korea. In 1970s special merit unit was included in presidential security service in Korea where Teukgongmusul was developed. Afterward Teukgongmusul was expanded in two different ways which were Army and presidential security service in Korea. In Army Teukgongmusul was expanded by no.5 special merit brigade and was expanded by Hapkido master who was worked as martial arts instructor for presidential security service in Korea. Fourthly, the historical progress of Teukgongmusul as bodyguard martial art was influenced by the political situation.

• Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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• 2002.08a
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• pp.167-167
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• 2002