• Wind and Structures
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• 제11권6호
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• pp.427-440
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• 2008

Estimates of wind-induced wind effects on tall buildings are based largely on 1980s technology. Such estimates can vary significantly depending upon the wind engineering laboratory producing them. We describe an efficient database-assisted design (DAD) procedure allowing the realistic estimation of wind-induced internal forces with any mean recurrence interval in any individual member. The procedure makes use of (a) time series of directional aerodynamic pressures recorded simultaneously at typically hundreds of ports on the building surface, (b) directional wind climatological data, (c) micrometeorological modeling of ratios between wind speeds in open exposure and mean wind speeds at the top of the building, (d) a physically and probabilistically realistic aerodynamic/climatological interfacing model, and (e) modern computational resources for calculating internal forces and demand-to-capacity ratios for each member being designed. The procedure is applicable to tall buildings not susceptible to aeroelastic effects, and with sufficiently large dimensions to allow placement of the requisite pressure measurement tubes. The paper then addresses the issue of accounting explicitly for uncertainties in the factors that determine wind effects. Unlike for routine structures, for which simplifications inherent in standard provisions are acceptable, for tall buildings these uncertainties need to be considered with care, since over-simplified reliability estimates could defeat the purpose of ad-hoc wind tunnel tests.

• The Journal of Asian Finance, Economics and Business
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• 제7권4호
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• pp.29-39
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• 2020

The purpose of this study is to investigate the determinants of blockholder presence in the Korean stock market. This study examines previous theories and studies, points that previous studies did not examine, and proposes two hypotheses. To verify two hypotheses, fundamental data were collected from firms listed on Korea Exchange from 2005 to 2017. As explanatory variables, we use the factors and characteristics of the firms used in the previous studies. Logistic regression analysis was conducted to test the determinants of blockholder presence. We find that firm size is the most distinctive factor determining the presence of blockholder, and firm idiosyncratic risk is the most similar factor determining the existence of each blockholder. Tobin Q shows significant value in family and government, and R&D intensity appears to be a negative related to the presence of blockholder in financial institutions. We also find that the determinant of blockholder presence differs from the mechanisms that govern each individual blockholder type when all blockholders grouped together. This suggests that there is blockholder heterogeneity within Korea listing firms. Our findings contribute to investors and policy makers who interested in the determinants of the presence of blockholder and blockhoder heterogeneity in Korea stock market.

• 한국IT서비스학회지
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• 제7권3호
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• pp.1-30
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• 2008

This paper proposes an integrated model of customer loyalty in the context of Internet shopping based on a review of two competing perspectives - transactional and relational views. The research model suggests that the usability and trust associated with an Internet shopping site are key determinants of customer loyalty. In this paper, factors such as promotion, ease of use/navigation, and purchase facilitation are posited as major determinants of usability. Trust, on the other hand, is assumed to be influenced by the quality of communication, social shopping service, and safety level associated with an Internet shopping site. This paper also asserts that the lack of consideration for individual differences is one of the key reasons for the inconsistent and mixed research findings in user acceptance literature. In this regard, the elaboration likelihood model (ELM) is considered to be appropriate referent theory as it may theoretically explain why a particular information technology (IT) related message has varying influences on different adopters. The research model comprising 11 hypotheses was derived from and validated through a survey involving 271 university students. The partial least square(PLS) method was used to test the suitability of the research model and its hypotheses. Overall, the results suggest that the usability and trust associated with an Internet shopping site play an important role in acquiring loyal customers. In particular, the user's Internet shopping involvement is found to moderate the relationship between trust and customer loyalty.

• 근관절건강학회지
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• 제28권3호
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• pp.252-262
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• 2021

Purpose: To define the concept of digital health literacy and identify its attributes. Methods: Walker and Avant's approach was employed for concept analysis. Attributes, antecedents, consequences, and the definition of digital health literacy were derived from a review of 28 studies. Results: Digital health literacy was identified to possess the following five attributes: health information seeking, health information processing, health information communication, health-related knowledge translation, and utilizing digital technology. Basic literacy skills, health concerns, motivation to use technology for health information, and access to digital technologies were all antecedents of the concept. The consequences of the concept were health behaviors, patient engagement, health status, and quality of life. Digital health literacy is the ability to seek relevant health information utilizing digital technology to solve health problems and improve quality of life. Furthermore, it refers to the translation of health-related knowledge obtained through health information processing-finding, understanding, and evaluating health information and health information communication-into the context in which individual and social factors interact. Conclusion: This study presented a new definition of digital health literacy that goes beyond existing internet-based eHealth literacy, by incorporating the context of emerging digital technologies. This proposed definition can serve as a foundation for the development of instruments and educational programs to improve individuals' digital health literacy.

• International Journal of Computer Science & Network Security
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• 제21권12spc호
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• pp.513-520
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• 2021

The purpose of the article is to study the impact of digitalization on the transformation of the banking system, taking into account current innovative development trends. The article analyzes the impact of key factors on the development of the digital economy. Ukraine's ranking positions in terms of digital competitiveness are shown. The necessity of using digital technologies in the sphere of banking activity is substantiated. The dynamics of changes in the number of operating banks in Ukraine is analyzed. The directions of introduction of information technologies in the sphere of banking activity are determined. An analysis of changes in the share of the population of individual EU member states that use the Internet for Internet banking. It is noted that modern transformation trends, digitalization of the economy have a significant impact on the landscape of the banking sector, in this context, the rating of Ukrainian banks in the categories of "Internet Banking" and "Mobile Banking". The advantages and disadvantages of using the capabilities of Internet banking are identified. Based on the study, the importance of expanding the boundaries of digitalization of the domestic banking system is substantiated, which will further increase the level of availability of online services in the field of banking. Prospects for further research are identified in the study of the impact of digitalization on the development of the banking system of foreign countries.

• 경영정보학연구
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• 제25권1호
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• pp.75-91
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• 2023

정보 기술의 발전으로, 공유 경제 서비스는 새로운 형태의 소비 방식으로 자리 잡았다. 특별히 차량을 소유하지 않고 빌려 쓰는 형태인 카 셰어링은 개인들의 이동 수단의 범위를 확장하는 새로운 서비스이다. 차량 소유로 발생하는 비효율성을 줄이고, 교통 문제를 완화하는 등 카 셰어링은 다양한 사회적 이점을 제공하지만, 이를 구현하기 위해서는 개인의 카 셰어링 서비스 이용 패턴을 이해하고 이용자의 서비스 재사용을 유도해야 한다. 본 연구는 개인의 카 셰어링 서비스 재사용 행동을 이해하기 위해 RFMC (Recency, Frequency, Monetary, and Clumpiness) 모델을 활용하였다. 국내 카 셰어링 서비스 업체의 데이터를 분석한 결과, 카 셰어링 서비스 재사용에 Recency, Monetary 는 부의 영향을, Frequency는 정의 영향을 끼치는 것으로 나타났다. 더욱이 Clumpiness가 높은 집단의 경우, Recency와 Monetary의 효과는 두드러지는 반면, Frequency의 영향은 미미해졌다. 이러한 연구 결과를 바탕으로, 이론적, 실무적 함의를 도출하였다.

• 한국임상약학회지
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• 제20권2호
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• pp.159-164
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• 2010

Radiofrequency ablation (RA) is being used to manage atrial fibrillation (AF) with patients failed at the $1^{st}$-line anti-arrhythmic medications. Patients undergoing this procedure are at increased risk of thromboembolism after ablation, and anticoagulation management surrounding the ablation remains controversial. Although no conclusive recommendations can be made, published guidelines and data support therapeutic anticoagulation with warfarin. The purpose of this study was to analyze effectiveness of current therapy and to find factors fluctuate International Normalized Ratio (INR) values in patients undergone RA followed by anticoagulation service (ACS). Retrospective review was conducted utilizing database in a hospital. Among 110 patients under warfarin around ablation between January 2006 to September 2007, 54 patients were selected and allocated into 2 groups: Group A included 47 who discontinued warfarin after ablation, while 7 in B continued the medication. Information on demographics, amount and length of warfarin dosing, INR values and measuring frequencies, and the causing factors on INR fluctuation were abstracted. Differences were analyzed using chi-squared test, Fisher's Exact test, and unpaired Student t-test. Mean amount of warfarin before and after surgery was 4.0 mg, 4.1 mg in Group A and was 5.1 mg, 4.6 mg in Group B, respectively. Average duration of warfarin doing before ablation was 73.7 days in Group A, 129.9 days in B with no significant difference (p = 0.312). The duration time of warfarin on groups after ablation lasted several months. The number of checking INRs was 4.1 and 7.6, respectively. Inter-individual variability of INR fluctuations were $2.1{\pm}0.6$ in Group A and $2.2{\pm}0.7$ in B which were not significantly different (p = 0.062). 164 cases of decreased INR were: 'omission in taking medication, stressfulness and headache, 'increased intake of high vitamin K foods', 'lifestyle change of increased physical activities', and 'increase of food-intakes'. To the contrary, 36 cases of increased INR were: 'reduce of food-intake', 'use of non-prescription drugs', 'reduction in physical activities', and 'excessive restriction on food-intake', consecutively. In conclusion, the study validated therapeutic outcomes of RA patients who we treated with standard guideline and demonstrated 9 factors of INR fluctuations in the patient. A well-trained, pharmacist-monitored anticoagulation service could reduce the risk of adverse effects and prevent complications in patients with AF around RA operation.

• 정보교육학회논문지
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• 제10권1호
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• pp.107-115
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• 2006

컴퓨터가 널리 보급되고 인터넷 사용이 보편화되면서 많은 아동들이 인터넷을 사용하고 있다. 초등학생의 일상생활 속에 인터넷이 빠르게 스며들면서 아동에게 많은 영향을 미치고 있다. 인터넷 사용이 학습과 의사소통, 스트레스 해소 등의 장점이 있지만 인터넷 게임으로 인한 공격성, 수면장애, 인터넷 중독 등의 문제점이 점점 부각되고 있다. 이에 본 논문은 초등학교 고학년 학생의 인터넷 활용실태를 알아보고 인터넷 중독이 어느 정도인지 파악하고자 한다. 또한 인터넷 중독에 영향을 미치는 요인을 개인, 가정, 학교의 측면으로 나누어 알아보고자 한다. 개인측면에서는 자아존중감, 자기통제력, 스트레스 인식, 우울, 감각추구성향을 알아보고 가정측면에서는 부모와의 의사소통, 부모의 양육태도, 가족기능, 가족 친밀감, 가족의 정서적 지지를 살펴보고 학교측면에서는 교사와의 관계, 교우관계, 학습활동, 규칙준수, 행사참여에 대해 알아보았다. 그 각각의 중독 요인에 대하여 분석하고 인터넷 중독을 미연에 방지해 초등학교 아동의 인터넷 중독에 대한 교육적 지도에 도움이 되고자 한다.

• 한국직업건강간호학회지
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• 제8권1호
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• pp.56-67
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• 1999

This study was designed to identify the relationships of role-conflict and role-overload, coping strategies, and stress response of clerical workers. The subjects were 115 clerical workers from two company. The instruments were the role-conflict and role-overload scale developed by Lee(1989), coping scale developed by Latack(1986), and the stress response scale developed by Chang(1993). Analysis of data was done by descriptive statistics, Cronbach's $\alpha$, Pearson correlation coefficietnt, ANOVA. The results of this study were summarized as follows ; 1. The average score for the level of stress response was $83.6({\pm}9.1)$. The high risk stress group was 86.1% of the clerical workers, the latent stress group members was 13.9%, and healthy group was 0%. The overall stress level was very high. 2. Considering the coping strategies by sociodemographic factors, the use of control coping strategies showed significant differences by work-time. The use of symptom management coping strategies showed significant differences by sex, age, married status, year of career, pay, and type of work. The organizational coping strategies showed significant differences by year of education and type of work. 3. The clerical workers who had worked below 44 hours per week complained significantly lower stress response(F=4.942, p<.05). 4. Above 65% of all respondents answered that they needed all of organizational level coping strategies. 5. The role-confilct positively related to escape and organizational level coping strategies(r=.562, r=.495, p<.05). The role-overload didn't related to individual level coping strategies, but positively related to organizational level coping strategies(r=.320, p<.05). 6. The control coping strategies and the escape coping strategies positively related to symptom management, organizational level coping strategies(r=.409, r=.324, r=.316, r=.339, p<.05). 7. The relationship between role-related stress and stress response revealed positive correlation(r=.482, r=.431, p<.05), and the relationship between stress response and control, symptom management coping strategies revealed negative cor-relation(r=-.3204, r=-.3146, p<.05). In conclusion, this study revealed that relationship of role related stress, coping strategies, stress response was statistically significant. The result of this study support that coping strategies vary across situation of stress. Based on survey results, future studies should consider coping strategies in specific stress situation and concept of symptom management coping strategy. Also organizational or training interventions could be developed and initiate to help to increase the use of adaptive coping strategies in light of individual and situational differences.

• 정보화정책
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• 제20권1호
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• pp.42-60
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• 2013

정보화시대에 있어서 기업의 업무 처리는 컴퓨터를 활용하는 것이 대부분이며 컴퓨터 오남용을 방지하기 위한 억제요인에 대해 많은 투자를 하고 있음에도 불구하고 빈도와 양은 증가추세에 있다. 따라서 본 연구의 목적은 기업내에서 개인 용도로 컴퓨터를 오남용 하고 있는 요인들을 조직적 특성과 개인적 특성으로 구분하여 파악해 보고자 한다. 조직 특성으로 살펴본 윤리강령 및 징계는 태도와 의도에 유의한 영향을 미치는 것으로 나타났다. 이는 윤리강령이 명확히 명문화 되어 있고 경영정책에 반영함으로써 종업원 스스로 지켜야 한다는 의지를 각인시킴으로써 회사의 정책과 연계시킬 수 있다는 것을 시사하며, 아울러 징계의 명시화와 인사고과에 반영하는 등의 노력이 효과가 있는 것으로 판단되어 진다. 조직 충성도는 태도에 유의하게 나타났으나 의도에는 유의하지 않게 나타났다. 이는 조직충성도 강도에 따라 반드시 컴퓨터 오남용 의도로 이어지는 것은 아니며 개인의 성향, 심리적 상태, 조직 분위기 등에 따라 다소 개인적인 차이가 있을 수 있을 것으로 생각되어 진다. 컴퓨터 오남용의 행동은 태도 및 의도에 의해 유의한 영향을 받았다. 업무이외의 목적으로 회사 컴퓨터를 사용하는 것이 부적절하다고 생각하기 보다는 조직 구성원에게 피해를 주지 않거나 일과시간 외 업무이외의 목적으로 얼마든지 회사 컴퓨터를 사용할 수 있다고 판단하는 성향이 강하다는 것으로 파악할 수 있겠다.