• Journal of the Korea Convergence Society
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• v.12 no.2
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• pp.247-258
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• 2021

Recently, organizations are demanding strict information security behavior from their employees. Strict information security policies and techniques can cause information security related stress. The purpose of this study is to present the negative effects of information security related techno stress and role stress that reduce knowledge sharing behavior and person-organization fit. The survey was conducted to people working in organizations with information security policies and system, and the research hypothesis was verified by structural equation modeling using 309 samples. As a result of the study, person-organization fit had a positive effect on knowledge sharing behavior, but role stress had a negative effect. And, techno-stress negatively affected the person-organization fit. Additionally, role ambiguity had a moderating effect between person-organization fit and knowledge sharing behavior. The implications of the study were to confirm the negative effects of information security related techno stress and role stress, and to suggest directions for minimizing negative behavior of insiders.

• The Journal of the Convergence on Culture Technology
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• v.9 no.1
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• pp.493-500
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• 2023

The current research has investigated the effect of school-aged children's TV viewing on their creativity, and examined the moderating effect of book reading in the relationship between children's TV viewing and creativity. Using data from the 10th (2017) Panel Study on Korean Children, the relationship between 9-year-old children's TV viewing, book reading, and performance on Korean Figural Creativity Test for Elementary school Student (K-FCTES) was examined. There was a significant negative correlation between children's TV viewing and creativity, and a positive correlation between children's book reading and creativity. In addition, children's TV viewing had a significant negative effect on their creativity, and children's book reading moderated this relationship. This study has its significance in that it identifies the negative effects of media exposure that needs be considered for creativity development of today's children, who are growing as digital native from birth, and it shows the importance of book reading as a factor that can control the negative effects of TV exposure.

• Smart Structures and Systems
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• v.31 no.3
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• pp.213-227
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• 2023

A passive prismatic-shaped isolation platform (PIP) is proposed to realize enhanced quasi-zero stiffness (QZS) effect. The design concept uses a horizontal spring to produce a tunable negative stiffness and installs oblique springs inside the cells of the prismatic structure to provide a tunable positive stiffness. Therefore, the QZS effect can be achieved by combining the negative stiffness and the positive stiffness. To this aim, firstly, the mathematical modeling and the static analysis are conducted to demonstrate this idea and provide the design basis. Further, with the parametric study and the optimal design of the PIP, the enhanced QZS effect is achieved with widened QZS range and stable property. Moreover, the dynamic analysis is conducted to investigate the vibration isolation performance of the proposed PIP. The analysis results show that the widened QZS property can be achieved with the optimal designed structural parameters, and the proposed PIP has an excellent vibration isolation performance in the ultra-low frequency due to the enlarged QZS range. Compared with the traditional QZS isolator, the PIP shows better performance with a broader isolation frequency range and stable property under the large excitation amplitude.

• Steel and Composite Structures
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• v.48 no.1
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• pp.59-71
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• 2023

Corrosion of the headed studs shear connectors is an important factor in the reduction of the durability and mechanical properties of the steel-concrete composite structure. In order to study the effect of stud corrosion on the mechanical properties in the negative moment region of steel-concrete composite beams, the corrosion of stud was carried out by accelerating corrosion method with constant current. Static monotonic loading was adopted to evaluate the cracking load, interface slip, mid-span deflection, and ultimate bearing capacity of four composite beams with varying corrosion rates of headed studs. The effect of stud corrosion on the stiffness of the composite beam's hogging moment zone during normal service stage was thoroughly examined. The results indicate that the cracking load decreased by 50% as the corrosion rate of headed studs increase to 10%. Meanwhile, due to the increase of interface slip and mid-span deflection, the bending stiffness dropped significantly with the same load. In comparison to uncorroded specimens, the secant stiffness of specimens with 0.5 times ultimate load was reduced by 25.9%. However, corrosion of shear studs had no obvious effect on ultimate bending capacity. Based on the experimental results and the theory of steel-concrete interface slip, a method was developed to calculate the bending stiffness in the negative bending moment region of composite beams during normal service stage while taking corrosion of headed studs into account. The validity of the calculation method was demonstrated by data analysis.

• Information Systems Review
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• v.22 no.4
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• pp.59-74
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• 2020

This paper investigates the asymmetric effect of social sentimental on an individual stock price return. For this purpose, four companies such as POSCO, Korean Electricity, AMORE PACIFIC, KIA Motors are chosen from KOSPI listed companies in terms of dataperspective. The main estimation results are as follows: the positive opinions affect only the stock prices return of three companies while the negative opinions affect all of the companies. It shows that positive or negative texts give asymmetric effect on stock price return and the effect of negative opinions is bigger than that of positive opinions. The results imply that investors are more sensitive to the negatives since they have the tendency of loss aversion. Also, it indicates that subjective opinion on SNS can be used as the proxy for the investment sentiment.

• The Journal of Economics, Marketing and Management
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• v.4 no.1
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• pp.23-33
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• 2016

Sales promotion is defined as the short-term incentive to encourage the purchase or sale of products and services. Retailers conduct a variety of sales promotion to encourage the purchase or sale of products and services. It is often used to induce the purchase of customers in short term and to improve the relationship with customers in the long term. Many previous studies about the effect of price discount SP on increase in sales and image improvement have conducted. But the study of non-price promotion, especially SP with 'Gifts', meanwhile, has been seldom researched. This study is to investigate the effect of the Gift SP conducted by retailers on the customer evaluation of the product and its Gifts. This study is to investigate the effect of 'Gifts', among the non-price promotion, on the customer evaluation. First of all, previous studies about the effect (-) of Sp with 'Gifts' on the customer evaluation of the product and its Gifts, and the factors that offset the negative effect of SP with 'Gifts' on quality perception are to examined. In this study, additionally, the summary of the study based on the previous studies and the research subject in the future are to be presented. Firstly, to examine the previous researches on the effect of SP which retailers conduct on the increased sales and or enhanced image, price discount SP has attracted a lot of attention as a research subject but researches on non-price sales promotion, particularly on SP with gift have seldom conducted as a research subject. Secondly, in the previous studies relevant to Price Discount SP, the long-term negative (-) effect of the target product or brand of SP has been studied. However, a few researches on the long-term negative (-) effect of SP with gift have been conducted. Thirdly, it might be brand affinity and purchase limit that buffered the negative (-) effect on the perceived quality of SP with gift which retailers had conducted. In spite of various studies conducted by many researchers, each study have discussed the consequences under certain circumstances and integrated results of research have not been in progress. It may be the research issues left to us to clearly identify the psychological mechanism of consumers until the effect of SP happens in order to theorize SP and to present a practical and useful suggestion.

• Korean Journal of Child Studies
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• v.16 no.1
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• pp.89-98
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• 1995

The present study explored a factor, social support, that could mediate the relationship between negative life events and behavioral problems during adolescence. It was hypothesized that social support from parents, peers, and teachers would be an effective mediator between negative life events and delinquent behavior. Data were collected from 161 of the 9th graders in a high school in a coastal community of Oregon. A series of path analyses using regression techniques was used to examine the research hypotheses. Results indicated that social support mediated the relationship between negative life events and delinquent behavior, implying the importance of social support from family, peers, and school in preventing delinquent behavior among adolescents. That is, negative life events were found to exert influence indirectly upon delinquent behavior through its direct effect on social support. Results were discussed in relation to the effects of negative life events on social support and delinquent behavior.

• Korean Journal of Child Studies
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• v.32 no.5
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• pp.13-28
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• 2011

This study explored the relationship between parental reaction to children's negative emotions, child's self-regulation and stress-coping behaviors. This study also examined the mediating effect of a child's self-regulation between parental reactions to children's negative emotions and a child's stress-coping behaviors. The sample included 407 elementary school 5th-6th grades and their parents (comprising 407 couples) in Seoul. The research results are summarized as follows. First, parental reactions to children's negative emotions were significantly related to the child's self-regulation and stress-coping behaviors. Secondly, it was also found that parental reactions to children's negative emotion were both partially and indirectly related to a child's stress-coping behaviors through the child's use of self-regulation.

• Korean Journal of Child Studies
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• v.28 no.4
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• pp.277-287
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• 2007

Antagonism between the Youngnam and Honam regions of Korea as expressed by adolescents and their parents was studied in 167 parent-adolescent pairs (total 334) of Youngnam residents. Adolescents were middle school students 71 (42.5%) and high school students 96 (57.5%), 90 boys (53.9%), 77 girls (46.1%). The instruments were subjects' self-reported social distance and stereotypes. Data were analyzed by t-test, paired t-test, Pearson's Correlation, and hierarchical regression. Major findings were that : (1) adolescents' social distance was positively associated with adolescent and parent negative stereotypes. (2) Adolescent positive/negative stereotypes were positively associated with parent positive/negative stereotypes. (3) Adolescent negative stereotypes exerted an indirect effect on social distance, controlled by parents' negative stereotypes.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.30 no.1
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• pp.33-40
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• 2007

A multi-server queueing system with finite buffer is considered. The input flow is the BMAP (Batch Markovian Arrival Process). The service time has the PH (Phase) type distribution. Customers from the BMAP enter the system according to the discipline of partial admission. Besides ordinary (positive) customers, the Markovian flow (MAP) of negative customers arrives to the system. A negative customer can delete an ordinary customer in service if the state of its PH-service process belongs to some given set. In opposite case the ordinary customer is considered to be protected of the effect of negative customers. The stationary distribution and the main performance measures of the considered queueing system are calculated.