• Journal of Welding and Joining
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• 제25권6호
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• pp.44-52
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• 2007

A welding process of a lifting lug for lifting heavy objects is one of the important welding processes directly related to the safety in shipbuilding. Welding a lifting lug is done in the manually and takes about forty minutes. Working environment for the lifting lug welding is very poor due to an radiant heat and a harmful fume. The purpose of this study is to develop methods of multi-pass welding using the lifting lug welding robot system. This study shows robot welding methods to achieve proper corner, straight and connection welding and an effectiveness of application.

• 한국강구조학회 논문집
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• 제20권4호
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• pp.529-537
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• 2008

본 논문의 목적은 슬래브가 있는 RHS 기둥-H 형강보 접합부의 내진보강설계방법을 제안하는 것이다. 모멘트접합부의 내진보강에 관한 이전 연구를 참조하면, 보강된 RBS(SR) 또는 연장된 수평스티프너(LH)를 가진 접합부는 응력/변형도 집중의 저감에 매우 효과적인 것으로 밝혀졌다. 따라서 두개의 내진보강방법, 즉, 보강된 RBS(SR)과 연장된 수평스티프너(LH)를 사용한 새로운 설계절차를 제시하였다: 게다가 본 논문에는 접합부의 내진보강방법을 향상시키기 위한 다양한 상세 및 방법 등이 기술되었다. 끝으로 설계방법의 검증을 위해서 파일럿테스트를 실시하였다.

• 유통과학연구
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• 제22권8호
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• pp.1-15
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• 2024

Purpose: This study explored how Indonesian banks utilize digital marketing communication strategies to optimize their distribution channels, leading to enhanced customer trust and brand loyalty. It examined specific methods such as sponsorships, social media, institutional partnerships, and mobile banking application features as key components of this digital distribution strategy. Research Design, Data, and Methodology: This study employed mixed methods design to assess digital distribution impacts. It involved 385 Jakarta bank customers. The sample size was determined using the Lemeshow formula. Results: The findings indicate that effective digital distribution strategies, including sponsorships, social media engagement, and user-friendly mobile banking applications, significantly enhance customer trust and loyalty. However, overly complex features may negatively impact loyalty. Conclusion: Thisstudy demonstrates a clear connection between the strategic use of digital marketing channels, such as sponsorships, social media, institutional partnerships, and mobile banking features, and the development of customer trust and loyalty. The results provide valuable insights to Indonesian banks in designing digital distribution strategies that prioritize building trust and fostering integrated customer interactions. Tailored digital marketing approachesthat optimize distribution can significantly enhance both trust and loyalty among Indonesian bank customers.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2010년도 춘계학술대회
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• pp.699-701
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• 2010

해상 감시용 Multi Sensor 및 IFOG 개발을 위하여 주 야간 겸용 감시카메라의 통합 개발과 시스템 Control Unit 설계 및 항해 장비 연동 시스템 제작하였다. 선박 통합 시스템의 Control Unit의 분석은 Control Unit에 연결 가능한 항해 장비 리스트를 선별하는 것으로 시작 하였다. 항해 장비 리스트를 선별한 후 각 항해 장비의 용도와 특성, 연결 방법, 통신 방법, 데이터 종류에 따라 Control Unit와 항해 장비간의 데이터 방향성, 데이터 종류들을 선별하여 그 성능을 보여주었다.

• Communications for Statistical Applications and Methods
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• 제17권3호
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• pp.327-335
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• 2010

문항반응이론은 문항의 난이도와 변별도가 검사를 치른 집단에 무관하게 항상 일정하며, 학생들이 매번 다른 검사를 치른다고 해도 자신의 고유한 능력점수를 받도록 하기위한 문항분석방법이다. 본 연구에서는 2000년부터 2009년까지 최근 10년 동안 대학수학능력시험에 출제되었던 통계영역 문제에 대하여 문항반응이론을 통한 분석을 실시하고 문항변별도와 문항난이도 등에 대해서 알아보았다. 그 결과 거의 60%의 문항이 어려운 문항으로 나타났다. 그러나 문항변별도는 비교적 양호한 것으로 판명되었다.

• Journal of Astronomy and Space Sciences
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• 제32권2호
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• pp.137-140
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• 2015

The results of the study of ionospheric variations in the summer months of 1998-2002 at an ionospheric station of vertical sounding "Petropavlovsk-Kamchatsky" are presented. Anomalous variations of virtual sporadic-E height (h'Es), Es blanketing frequency (fbEs), and the critical frequency of the ionospheric F2 layer (foF2) (which can be attributed to the possible earthquake precursors) are selected. The high efficiency of the selection of ionospheric earthquake precursors based on the several parameters of Es and F2 layers is shown. The empirical dependence, which reflects the connection between the lead-time of the earthquake moment, the distance to the epicenter from the observation point, and the magnitude of the earthquake are obtained. This empirical dependence is consistent with the results of the detection of earthquake precursors by measuring the physical parameters of the Earth's crust in the same region.

• 한국도로학회논문집
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• 제20권1호
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• pp.147-156
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• 2018

PURPOSES : The purpose of this study is to analyze the characteristics of the weight values of evaluation items by traffic safety project type. METHODS : In general, a large-scale investment in projects such as the traffic safety project requires economic analyses to be performed in advance. However, there is an argument for considering special characteristics of the traffic safety project. Therefore, this study conducted characteristic analysis of the weight values of evaluation items. The analysis consisted of two steps. The first step was hypothesis verification using analysis of variance (ANOVA). In this process, the authors examined whether the weight of evaluation items is the same regardless of the traffic safety project type. Based on the first step's results, the authors proceeded to the second step. The objective of this step was to analyze how different the weight values are by traffic safety project type using an analytic hierarchy process. RESULTS : According to the ANOVA test results, the benefit to cost ratios have different weight values based on traffic safety project type at the 0.01 significance level. The policy evaluation items, such as the plans connection, resident opinion, and regional equity, also showed the same results except that the result for the related plans connection was statistically significant at the 0.05 level. Based on the first step's result, the AHP analysis in the second step showed that the traffic safety projects for vulnerable users and pedestrians have very low weight values in economic evaluation factors compared with other safety project types. The weight values for vulnerable users and pedestrians were 0.29 and 0.26, respectively, in economic evaluation items. On the other hand, the weight values for other safety project types were around 0.6. Among the policy evaluation items, resident opinion showed a higher weight value than other factors, such as connection and regional equity items. CONCLUSIONS : The social and economic impact of a traffic safety project varies by project type and project characteristics. Although the economic approach is overarching and a reasonable methodology is applied for large-scale projects, it should be noted that the safety issue, especially for transportation of vulnerable uses, requires a non-economical approach. Based on the analysis results, this study suggests that the priority of the projects should be determined by separating them into independent assessment groups depending on their characteristics.

• International Journal of Computer Science & Network Security
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• 제22권11호
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• pp.192-198
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• 2022

The article is devoted to current problems of the concept leadership. The essence of the concept of "leadership" is considered and leadership theories. The authors of the article conducted a multifaceted analysis of leadership theories, analyzed the factors of their formation and identified their relationship. Also, the reasons for the difference and connection between leadership and leadership. Styles were presented leadership and their role in building effective leadership. To form the basis of effective leadership was compared to the main criteria inherent in this theories. The following research methods were used in the work: theoretical (analysis of regulatory documents and scientific literature on the problem under study, comparison, generalization, modeling), empirical (diagnostics of the level of formation of managerial competencies of students of the system, questioning, observation, peer review, comparative qualitative and quantitative analysis of diagnostic results the level of formation of managerial competencies).

• International Journal of Computer Science & Network Security
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• 제22권1호
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• pp.213-217
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• 2022

In the article, in connection with the goal and the hypothesis put forward, the following tasks were formulated: Based on the analysis of literature and existing pedagogical experience, the possibilities, features and pedagogical conditions for the use of educational telecommunication projects were specified. The selection of topics and content of educational telecommunication projects for use has been carried out. Research methods: theoretical analysis of psychological, pedagogical and methodological literature, projects of educational standards in computer science and information technology, study of the state of the problem in teaching practice, questioning.

• Structural Engineering and Mechanics
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• 제90권3호
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• pp.301-311
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• 2024

Different methods have been proposed in the literature for splicing the reinforcing bars in the construction of concrete structures, which are alternatively used depending on design requirements. The most common approach is the lap splicing which is known as a cost-effective method although, its main disadvantages including congestion of bars at the lap zone and consequently, material wastage has motivated utilization of the other techniques such as mechanical splices (couplers). To better evaluate the performance of the couplers, 6 reinforced concrete (RC) beams whose difference is only the type and location of splices have been experimentally studied in this paper. Based on the results, the mechanical connection of the bars did not markedly affect the load-carrying capacity of the specimens. Moreover, it was observed that after applying the loads and failure of the specimens, none of the bars ruptured at the splice location and all couplers remained undamaged.