• 유통과학연구
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• 제22권4호
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• pp.23-35
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• 2024

This study investigates the organizational factors including firm size, adaptive capability, absorptive capability, innovative capability, and executive support to determine internet of things, production and services, and organizational performance. Research design, data, and methodology: A quantitative methodology was employed, involving the distribution of surveys to 460 employees occupying managerial and strategic roles. These individuals have accrued a minimum of one year of experience within 20 leading manufacturing and distribution companies in Thailand, each boasting a workforce exceeding 250 employees. Sampling techniques utilized encompass judgmental, quota, and snowball sampling. Furthermore, analysis of the data was conducted through Confirmatory Factor Analysis (CFA) and Structural Equation Model (SEM). Results: The findings indicate that factors such as firm size, adaptive capability, absorptive capability, and innovative capability exert significant influence on the Internet of Things (IoT). In addition, IoT significantly impacts both production and services. Furthermore, the study highlights the significant influence of production and services on organizational performance. However, the anticipated relationship between executive support and IoT lacks support according to the results. Conclusions: This study highlights the transformative potential of IoT for the manufacturing and distribution sector, paving the way for enhanced efficiency, competitiveness, and sustainability in a rapidly evolving business landscape.

• Journal of Construction Engineering and Project Management
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• 제4권1호
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• pp.45-50
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• 2014

Productivity analysis is the most important and significant method for evaluating management and engineering performance during whole project stage. However, it is very difficult in developing qualitative index to construction industry comparing to other industries. Therefore, analytical hierarchy process (AHP) is one of the methods for overcoming these limitations by checking consistency index using duality comparison. In this study, it is scraped up an application plan and selection for innovative tools by analyzing survey results on tool users and site managers with respect to using Modified-AHP performance measurement method.

• Structural Monitoring and Maintenance
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• 제1권3호
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• pp.323-338
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• 2014

In this study a new innovative method of earthquake-resistant strengthening of reinforced concrete structures is presented for the first time. Strengthening according to this new method consists of the construction of steel fiber ultra-high-strength concrete jackets without conventional reinforcement which is usually applied in the construction of conventional reinforced concrete jackets. An innovative solution is proposed also for the first time that ensures a satisfactory seismic performance of existing reinforced concrete structures, strengthened by using composite materials. The weak point of the use of such materials in repairing and strengthening of old R/C structures is the area of beam-column joints. According to the proposed solution, the joints can be strengthened with a steel fiber ultra-high-strength concrete jacket, while strengthening of columns can be achieved by using CFRPs. The experimental results showed that the performance of the subassemblage strengthened with the proposed mixed solution was much better than that of the subassemblage retrofitted completely with CFRPs.

• 대한조선학회논문집
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• 제60권4호
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• pp.222-230
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• 2023

In the present work, the scale effect on the Boil-Off Rate (BOR) was investigated based on an analytical method to systematically evaluate the thermal performance of a Liquefied Natural Gas (LNG) Cargo Containment System (CCS). A two-dimensional thermal resistance network model was developed to accurately estimate the heat ingress into the CCS from the outside. The analysis was performed for the KC-1 LNG membrane tank under the IGC and USCG design conditions. The ballast compartment of both the LNG tank and cofferdam was divided into six sections and a thermal resistance network model was made for each section. To check the validity of the developed model, the analysis results were compared with those from existing literature. It was shown that the BOR values under the IGC and USCG design conditions were agreed well with previous numerical results with a maximum error of 1.03% and 0.60%, respectively. A SDR, the scale factor of the LNG CCS was introduced and the BOR, air temperature of the ballast compartment, and the surface temperature of the inner hull were obtained to examine the influence of the SDR on the thermal performance. Finally, a correlation for the BOR was proposed, which could be expressed as a simple formula inversely proportional to the SDR. The proposed correlation could be utilized for predicting the BOR of a full-scale LNG tank based on the BOR measurement data of lab-scale model tanks.

• Advances in concrete construction
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• 제10권1호
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• pp.1-11
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• 2020

This study intends to produce an ultra-high performance fibre reinforced concrete (UHPFRC) made with hybrid fibres (i.e., steel and polypropylene). Compressive and tensile strength characteristics of the hybrid fibres UHPFRC are considered. A total of 14 fibre-reinforced composites (FRCs) with different fibre contents or types of fibres were prepared and tested in order to determine a suitable hybrid fibre combination. The compressive and tensile strengths of each concrete at 7 days were determined. The results showed that a hybrid mix of micro-polypropylene and steel fibres exhibited good compromising performances and is the ideal reinforcement mixture in a strong, cost-effective UHPFRC. In addition, maximum compressive strength of 167 MPa was achieved for UHPFRC using 1.5% steel fibres blended with 0.5% macro-polypropylene fibres.

• Nuclear Engineering and Technology
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• 제52권4호
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• pp.776-783
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• 2020

As the refueling of a sodium-cooled fast reactor is conducted by rotating part of the reactor head without opening it, the monitoring of existing obstacles that can disturb the rotation of the reactor head is one of the most important issues. This paper deals with the ultrasonic ranging technique that directly monitors the existence of possible obstacles located in a lateral gap between the upper internal structure and the reactor core in a prototype generation IV sodium-cooled fast reactor (PGSFR). A 10 m long plate-type ultrasonic waveguide sensor, whose feasibility has been successfully demonstrated through preliminary tests, was employed for the ultrasonic ranging technique. The design of the sensor's wave radiating section was modified to improve the radiation performance, and the radiated field was investigated through beam profile measurements. A test facility simulating the lower part of the upper internal structure and the upper part of the reactor core with the same shapes and sizes as those in the PGSFR was newly constructed. Several under-water performance tests were then carried out at room temperature to investigate the applicability of the developed ranging technique using the plate-type ultrasonic waveguide sensor with the actual geometry of the PGSFR's internal structures.

• 디지털융복합연구
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• 제20권3호
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• pp.9-18
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• 2022

조직성과는 리더의 행동과 직접적인 관련성을 지니고 있고 다양한 리더십의 역할에 대한 중요성이 지속적으로 강조되고 있다. 리더십의 유형과 그에 따른 역할은 다양하지만 현재 중국 조직은 지속적으로 사회적 책임을 강화하고 조직의 지속적 발전과 성과 향상을 위해 윤리적 요소들을 요구하고 있다. 이러한 현상을 바탕으로 본 연구는 윤리적 리더십이 중국 조직내에서의 역할을 규명하고 이에 따른 성과 수준을 검증하는데 초점을 맞추었다. 성과와 관련하여 오늘날 혁신을 요구하는 상황을 기반으로 구성원의 혁신행동에 초점을 맞추었다. 더 나아가 윤리적 리더십이 구성원의 혁신행동에 미치는 영향에서 구성원의 리더에 대한 신뢰와 발언행동의 다중직렬 매개효과를 검증하였다. 이를 검증하기 위해 본 연구는 중국 중소기업에 종사하는 구성원 336명을 대상으로 실증연구를 진행하였다. 본 연구의 실증분석결과를 통해 윤리적 리더십은 구성원의 혁신행동 수준을 향상시키는데 있어서 핵심적인 역할을 할 수 있다는 결과를 도출하였다. 또한 윤리적 리더십이 혁신행동을 향상시키는 과정에서 리더신뢰와 발언행동의 다중직렬 매개효과를 보여주었다. 총체적으로 본 연구를 통해 중국 조직에서 긍정적인 성과를 향상시키는데 있어서 윤리적 리더십의 역할을 파악할 수 있으며 윤리적 리더십 연구 측면에 기여하였다. 마지막으로 윤리적 리더십과 성과향상에 대한 방안에 대해 논의하였으며 향후 연구 방향을 제시하였다.

• 한국엔터테인먼트산업학회논문지
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• 제14권1호
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• pp.27-39
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• 2020

본 연구는 노인체육지도자의 긍정심리자본이 조직성과와 직무열의 및 혁신행동에 미치는 영향을 알아보기 위하여 서울, 경기, 인천 지역의 스포츠센터 및 노인체육센터 5곳의 노인체육지도자 227명을 대상으로 연구하였으며, 다음과 같은 결과를 도출하였다. 첫째, 노인체육지도자의 긍정심리자본은 조직성과의 모든 하위요인에 유의한 영향을 미치는 것으로 나타났다. 둘째, 노인체육지도자의 긍정심리자본은 직무열의의 모든 하위요인에 유의한 영향을 미치는 것으로 나타났다. 셋째, 노인체육지도자의 긍정심리자본은 혁신행동에 유의한 영향을 미치는 것으로 나타났다. 따라서 본 연구의 결과, 긍정심리자본은 조직원들의 조직성과와 직무열의 및 혁신행동을 높여주는 중요한 변수임을 확인하였고 긍정심리자본이 노인체육지도자의 근무환경에 긍정적인 효과가 있다는 것을 입증한 데 큰 의의가 있다.

• 한국디지털정책학회:학술대회논문집
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• 한국디지털정책학회 2006년도 추계학술대회
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• pp.167-175
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• 2006

This paper aimed to exam core factors of the success factors of new products and analyze their effects on success. To accomplish this purpose, this study examined previous studies and summarized core factors of success factors of new products. From previous studies, we drawed core factor Core factor is technology factors(marketing skills, technical skills), specific of new product(more innovative, less innovative, cost advantage, competitive advantage), the process of product development(crossfunctional integralion, staff involvement). Except for more innovative factors, the others factors affect on success To be winner , companies must be consider these key factor( less innovative, cost advantage, competitive, advantage, cross-functionalintegration, staff involvement)

• Steel and Composite Structures
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• 제19권6호
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• pp.1599-1610
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• 2015

Cold Formed Steel members are widely used in today's construction industry. However the structural behavior of light gauge high strength cold formed steel sections characterized by various buckling modes are not yet fully understood. Because of their simple forming and easy connections, the commonly used cold formed sections for beams are C and Z. However both these sections suffer from certain buckling modes. To achieve much improved structural performance of cold formed sections for beams both in terms of strength and stiffness, it is important to either delay or completely eliminate their various modes of buckling. This paper presents various innovative sectional profiles and stiffening arrangements for cold formed steel beams which would successfully contribute in delaying or eliminating various modes of premature buckling, thus considerably improving the load carrying capacity as well as stiffness characteristics of such innovative cold formed sections compared to conventional cold formed steel sections commonly used for beams.