• Annual Conference of KIPS
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• 2009.04a
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• pp.745-749
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• 2009

RFID 기술을 사용하는 환경에서는 태그와 리더간에 Radio Frequency 를 이용한 무선 통신을 하기 때문에 서로간의 데이터 손실 없이 성공적인 통신을 항상 보장하기는 어렵다. 태그가 리더 영역 내에 있다 하더라도 주변 다른 전자제품의 전파 방해나 장애물의 영향으로 인해 센서 태그로부터 센싱 데이터를 읽는 도중에 데이터 손실이 발생 할 수 있다. 이러한 센서 데이터는 콜드 체인과 같은 물류환경에서 상품을 관리하기 위하여 중요하게 사용되기 때문에 센싱 데이터를 전송하는 도중에 손실된 데이터를 복구해야 한다. 본 논문에서는 반능동형 센서 태그로부터 센싱 데이터 값을 손실 하였을 때 완전한 결과 데이터로 복구하기 위한 회복 기법을 제안한다. 이를 지원하기 위해 결과 데이터 복구 기법과 Packet Size 제어 기법을 사용한다. 이 기법들은 회복 기법이 성공적인 데이터의 읽기 연산을 보장하고, 읽기 처리 속도를 빠르게 하는데 중요한 역할을 한다.

• Asia Marketing Journal
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• v.8 no.2
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• pp.1-26
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• 2006

In the growing field of green marketing there are various psychological influences that can lead to green purchase behavior. An understanding of these influences can lead to greater green marketing effectiveness. The purpose of this paper is to analyze the effects of several value types, environmental attitudes, and preference for product attributes on green purchase behavior. To this end, a conceptual model has been proposed and tested for empirical verification with the use of a survey. Data collected from 266 Korean respondents are analyzed using path analysis. Results provide support for the proposed model, demonstrating positive links among universalism, environmental attitudes, preference for environmental attribute, and green buying behavior. It indicates that individuals with universalism as a preferred value type are high in their environmental attitudes and finally, tend to buy green products through their preference for environmental attribute. The mediating role of preference for price is not significant between environmental attitudes and green purchase behavior. The present findings, in addition, contribute the width of understanding of various proenvironmental behaviors by focusing on green purchase behavior and surveying with a Korean sample. The implications for the practices of green marketing are discussed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.9
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• pp.218-228
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• 2020

The material industry is an important infrastructure industry that uses process technology in order to produce parts applied to the final product and determine the quality of the finished product. However, the market environment, which has been recognized as a 3D industry, has deteriorated recently and lost competitiveness compared to other material industry countries. This study analyzed the characteristics of forging companies and The study found that three characteristics of the forging industry, facility-oriented, order-based, and field-centered, and internal failure cost and external failure costs were set as the range of quality cost. A total of eight quality tasks were selected by applying the quality cost management system and continuous quality improvement process developed for large-scale A forging company, and improvement activity proved its effectiveness reducing quality costs by 63.3% compared to the previous year. The research helps forging companies establish a quality management strategy by systematically managing and analyzing quality costs.

• Journal of the Korean Institute of Gas
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• v.22 no.4
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• pp.49-54
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• 2018

In the Active Pharmaceutical Ingredient(API) manufacturing company, since the product is produced by the chemical reaction, fire and explosion are frequently occurred in the process of inputting the raw powder as the chemical reaction stage. There are not many studies on safety measures through analysis of cause of accident in the actual chemical reaction stage. In this study, we investigated the heat flow in the boron removal reaction process to investigate the risk in the chemical reaction stage. The study reaction process was performed by using the reaction calorimeter for the products synthesized at the actual raw material in pharmaceutical factory. The risk was estimated by comparing the maximum temperature of the synthesis reaction, which can generate heat due to the failure of cooling in the actual manufacturing process, and the technical temperature. These results are applied to commercial manufacturing sites and safety measures to control the risk of runaway reaction due to reaction heat are suggested.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.2
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• pp.197-207
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• 2018

SMEs manufacturing Factory, which are small-scale production systems of various types, mass-produce and sell products in order to meet customer needs. This means that the company has an excessive amount of material supply to reduce the loss due to lack of inventory and high inventory maintenance cost. And the products that fail to respond to the demand are piled up in the management warehouse, which is the reality that the storage cost is incurred. To overcome this problem, this paper uses ARIMA model, a time series analysis technique, to predict demand in terms of seasonal factors. In this way, demand forecasting model based on economic order quantity model was developed to prevent stock shortage risk. Simulation is carried out to evaluate the effectiveness of the development model and to demonstrate the effectiveness of the development model as applied to SMEs in the future.

• Elastomers and Composites
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• v.47 no.4
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• pp.347-354
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• 2012

There exist many merits in designing products and setting operational condition when computer aided engineering (CAE) is adopted in injection molding process. CAE also gives increasing efficient of molding, reducing developing time of product, and maintaining high quality products. Specially, it suggests design guidelines for new products and reducing wasting time to get steady state. Two and three dimensional computer simulations are available in injection molding and those results are somewhat different. However there are no guidelines for 2D and 3D computer simulations in using CAE in injection molding even though it is widely used in plastic industry. In this study, two and three dimensional computation results were compared for various part thickness, part shape, and number of finite element. Subsequently computational results were compared with experimental data such as pressure and temperature. The guidelines in two and three dimensional CAE analysis have been suggested through this study.

• Public Diplomacy: Theory and Practice
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• v.2 no.2
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• pp.53-80
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• 2022

Despite an astronomical budget for public diplomacy, China is experiencing successive failures in public diplomacy. The unfavorable feeling towards China is increasing every year in the world and China needs a new public diplomacy to resolve anti-Chinese sentiment. Here, we found that viewers of Korean-Chinese student YouTuber Deemd formed a friendly image towards China after watching Deemd's China vlog. Therefore, in this study, we tried to examine whether Deemd's vlogs affect the improvement of China's country image theoretically guided by the theory of mere exposure effect. In addition, we examined whether the improvement of a country image causes the 'Halo effect' that leads to an increase in the intention to visit China and purchase intention of Chinese products. It is expected that the results of this study can serve as a new digital media diplomacy solution for countries, including China, that want to capture the hearts of foreign public in the era of a new digital public diplomacy.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2017.08a
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• pp.84-100
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• 2017

제1차 벤처붐을 겪은 이후 후기에 안정된 기업에 투자를 선호하는 벤처투자방식의 변화가 나타나고 있다. 기업성장단계에서 초기에서 중기에 있는 기업의 경우 자금의 부족을 경험하며, 지속적인 성장을 위해서 정부 R&D자금 지원을 받고 있다. 하지만 정부의 R&D자금 지원이 과연 지속가능성 측면에서 경쟁력이 있는 기업에게 지원되고 있는가에 대한 우려의 목소리가 있다. 본 연구는 제조업에 속하는 벤처기업을 대상으로 DEA 효율성 분석을 실시하였다. 이를 통하여 제조업에 속한 핵심 산업인 ICT제품과 같은 첨단제조와 기계, 자동차와 같은 일반제조에 속한 벤처기업의 효율성을 살펴보고, R&D지원을 받는 벤처기업과 그렇지 않은 기업을 비교분석한다. 추가로 두 집단 간의 특성(혁신성, 성장성, 수익성, 안전성)이 1년간 어떻게 변화하였는지 분석한다. 실증 분석결과, 제조업에 속한 R&D자금을 지원받는 벤처기업의 경우 그렇지 않은 기업보다 효율성이 낮은 것으로 나타났다. 이는 지원을 받은 벤처기업이 지속가능한 측면에서 비지원기업 보다는 경쟁력이 낮음을 시사한다. 그리고 1년간의 여러 특성의 변화를 살펴본 결과, 혁신성에서는 지원기업이 높은 성과를 창출하였지만, 수익성에 있어서 비지원기업 보다 저조한 것으로 나타났다. 따라서 정부의 R&D지원이 지속가능성 측면에서 경쟁력이 있는 기업에게 지원되기 위해서는 기술력뿐만 아니라 경영 효율성을 고려하는 시도가 필요하다.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.20 no.41
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• pp.113-122
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• 1997

The purpose of this study is to extract managerial factor into each cell which is classified by the characteristic area of new products. For this purpose, the characteristic area of new products is classified by which is Needs & Seeds Basis. The focus of this study is on examination of failure factors, which have an important effect upon new product failure. The variables for this study were selected from literature survey and pre-interview was implemented specially. The subject of study was project leaders of electronics industry where have taken the leading part in product development activities in Korean manufacturing industries. Enquete survey was conducted in each firm and project managers were asked to respond to 37 questions. Conclusion of this study based on many significant results gained by the various multi-variated analysis are summarized as follows. First, it can be noted that failure factors are different by each classified model and characteristic area of a new product. Second, it has been identified that the important factors for the new product development were technical & managerial support and it's ability, namely, the crucial factors of failure product were lacking in ability of technical development and R&D management system construction.

• Journal of the Korea Society of Computer and Information
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• v.8 no.4
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• pp.57-62
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• 2003

At the beginning stage of design process, the concept design is required to equip the creative idea thinking and exerts critical effect on the success of production. To support the idea thinking process at the stage of concept design, web-based Creative Group Thinking System(CGTS) was developed. In this vein, the purpose of this study is to investigate the significance of HCI(Human Computer Interface) and UI(User Interface) and to find the way to increase the applicability of the UI of CGTS.