• International Journal of Advanced Culture Technology
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• 제7권2호
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• pp.218-226
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• 2019

In modern society, people live in an environment with artificial or natural noise. Especially, the sound that corresponds to the artificial noise makes the noise itself and affects each other because many people live and work in the city. Sounds are generated by the activities and causes of various people, such as construction sites, aircraft, production machinery, or road traffic. These sounds are essential elements in human life and are recognized and judged by human auditory organs. Noise is a sound that you do not want to hear by subjective evaluation, and it is a loud sound that gives hearing damage or a sound that causes physical and mental harm. In this study, we introduce the method of stimulating the human hearing by finger vibration and explain the advantages of the proposed method in various kinds of a noise environment. And how to improve the sound quality to improve efficiency. In this paper, we propose a method to prevent the loss of hearing loss and the transmission of sound information based on proper signal to noise ratio when using portable IT equipment in various noise environments.

• International Journal of Computer Science & Network Security
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• 제21권9호
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• pp.354-357
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• 2021

Software vulnerabilities are becoming more and more increasing, their role is to harm the computer systems of companies, governmental organizations and agencies. The main objective of this paper is to propose a method that will cluster future software vulnerabilities that may spread. This method is developed by combining the Multiple Correspondence Analysis (MCA), the Elbow procedure and the Kmeans Algorithm. A simulation was done on a dataset of 15713 observations. This simulation allowed us to identify families of future vulnerabilities. This model was evaluated using the silhouette index.

• International Journal of Advanced Culture Technology
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• 제8권4호
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• pp.110-118
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• 2020

It is important to have an appropriate amount of inventory for effective operations. This study seeks to develop a sustainable newsvendor model by incorporating environment-related costs into the existing well-known (single-period) newsvendor model. Since leftovers do more harm to environments than stockouts, the optimal order amount tends to be lower than the traditional quantity. However, this is not the case when a second buy is allowed. A second order opportunity is prevalent in industries where it improves demand forecast despite incurring extra costs. In this study, we conduct an extensive numerical analysis for a newsvendor situation with a permitted second buy. The results show that we can reduce inventory costs by considering sustainability concerns. The research idea of including sustainability considerations into existing inventory models can be extended to a more general case and provides managerial insights for better inventory decisions.

• 식품과학과 산업
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• 제51권3호
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• pp.185-195
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• 2018

Nutrition through food is a very important life support activity for humans in maintaining a healthy life. Nevertheless, there is no absolute safe food. In the Modern Food Law, risk analysis developed as an alternative to food safety. However, the Korean Food Sanitation Act introduced risk analysis, but many problems have arisen because the right risk concept is not reflected. To solve the problem, it is necessary to reflect the exact concept of the risk. According to our Food Sanitation Act, risks are used as risk, hazard, and harmful according to the context. The study pointed out these problems and suggested a variety of comparative legal and realistic alternatives.

• International Journal of Computer Science & Network Security
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• 제21권5호
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• pp.237-242
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• 2021

The article deals with the problematic issues of defining information as an object of private relations. Definitions that they are intangible and non-consumable by nature, are inextricably linked to a specific material carrier are/or secured by the subject that transmits them, messages, and information that have quantitative and qualitative characteristics, and are capable of having a freight or another value, and in case of its illegal usage causing damage and moral harm.

• Journal of Public Diplomacy
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• 제1권2호
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• pp.1-26
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• 2021

Applying discourse analysis of Russia's narrative on humanitarian aid and its perception by the Western collective identity at the beginning of the COVID-19 pandemic, this study identifies several challenges that constructivism poses to the current understanding of public diplomacy (PD). In contrast to the mainstream positivist tendency to evaluate the effectiveness of PD through models, this article expands the PD narrative by inquiring about the role of power, intersubjective knowledge, and collective identities in public diplomacy. In particular, it examines the PD questions often ignored by researchers regarding how collective identities can exercise discursive power to interpret incoming narratives, which challenge domestic intersubjective knowledge. It also argues that, because the Russian political elite failed to ensure a coherent story and provide informational support for its humanitarian aid, the Western intersubjective knowledge on Russia negatively contributed to the perception of PD narratives. Thus, the article underscores the importance for PD practitioners to understand how the socially constructed nature of knowledge can improve or harm PD strategies.

• 한국동물생명공학회지
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• 제37권1호
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• pp.13-16
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• 2022

The use of animals heavily impacts the mental health of researchers performing the animal experiments. The animal researchers need to take care of animals but also give pain and sacrifice them at the same time. This circumstance can cause a variety of mental stress to the researchers. The stress generated in the laboratory would not only negatively affect the management of animals and the research results, but also would harm the researchers' physical and mental health. Because the feeling of sympathy for animals is a natural feature of humanity, psychological stress following a laboratory animal's death after use is not surprising. It is necessary to revise the relevant laws based on understanding the difficulties of animal researchers in society and to develop related educational programs at the national level to help the psychology and emotions of researchers who conduct animal experiments.

• KDI Journal of Economic Policy
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• 제43권2호
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• pp.53-79
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• 2021

The recession caused by the COVID-19 crisis has features that could disproportionately harm female employment. Risk of infection and social distancing measures may have disrupted jobs in face-to-face industries, which have traditionally hired more women than men. School closures and a consequent increase in childcare and homeschooling demands may have discouraged labor market participation by working mothers. Using the Economically Active Population Survey, I examine how female employment was affected by each factor. I find that the gender gap in the Employment to Non-participation (E to N) transition rates is twice as large as the gap in the Employment to Unemployment (E to U) transition rates. Women's overrepresentation in the face-to-face industries accounts for most of the gap in the E to U transition but only a third of the gap in the E to N transition. The rise in non-participation is especially pronounced among married women aged 39-44, the group most likely to have elementary-school-age children.

• 품질경영학회지
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• 제50권4호
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• pp.635-646
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• 2022

Purpose: In this study, the detailed implementation plan for product safety evaluation and management suggested by KS A ISO 10377 to reduce the risk of harm to consumers and users is presented so that companies can strategically implement it. Methods: In order to achieve the purpose of this study, the upper elements and detailed execution plans shown in KS A 10377 are classified into hierarchies and set as a decision hierarchy. A pairwise comparison is performed to derive it. Results: Among the top factors, 'design safety (D)' was the most important factor, with 0.314. Therefore, ensuring safety in the design stage that can prevent defects in advance is the most important action plan for companies to supply safe products. Conclusion: The results of this study, it is intended to help companies and related organizations more easily understand and continuously apply KS A ISO 10377.

• 한국항공운항학회지
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• 제30권4호
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• pp.191-198
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• 2022

Stress refers to various body reactions that occur when humans are stimulated by environmental conditions. The quality of education and flight skills can suffer if flight trainees are constantly subjected to high stress, even in the case of flight trainees, and as a result, it can harm becoming a pilot. It is therefore the aim of this study to identify stress factors (flight training, career, financial support, relationships with family and teachers) that student pilots face, to determine how these factors affect flight and academic immersion and abandonment, and to improve the quality of flight education.