• 한국기계가공학회지
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• 제15권6호
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• pp.101-108
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• 2016

This study was initiated to minimize head injuries, which is the largest cause of increased external activity, traffic accident injuries, and death. We developed a low cost airbag that can be covered by a safety helmet based on consumer needs. The results of the survey showed that safety is the most important aspect of consumers' safety helmets. It also predicted that increasing the weight would present the biggest problem. Curved airbag cushion parts that can be attached to a helmet and the sensor part of a block type were designed. Impact analysis was performed by specifying the pressure inside the airbag and the volume of the airbag as variables.

• International Journal of Quality Innovation
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• 제6권3호
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• pp.56-69
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• 2005

There have been growing concerns about whether proper measures are in place to ensure the delivery of quality services and the operations in research and educational institutions. This paper describes various quality models and discusses their relevance into the total quality concepts and quality management systems (QMS) in education. It then illustrates how a QMS and the accompanied quality manual be developed in a research and educational institution using the Centre for Enterprise Research Integration (ERI) at The University of the West Indies, Trinidad as a case. Through personal interviews with the $Centre{\square}s$ personnel, views on the operations and determinants of the QMS were acquired. Results showed that the people's resistance to changes, conflicts on academic freedom, and difficulties on measuring performance were the obstacles to QMS implementation. People involvement and proper communication are determinants of QMS implementation. The system also rests on having a tailored quality manual that entails the documentation of processes and procedures for ascertaining the delivery of quality services and operations in the Centre. The development of quality manual is briefly described in the paper.

• International Journal of Quality Innovation
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• 제6권2호
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• pp.131-146
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• 2005

There have been growing concerns about whether proper measures are in place to ensure the delivery of quality services and the operations in research and educational institutions. This paper describes various quality models and discusses their relevance into the total quality concepts and quality management systems (QMS) in education. It then illustrates how a QMS and the accompanied quality manual be developed in a research and educational institution using the Centre for Enterprise Research Integration (ERI) at The University of the West Indies, Trinidad as a case. Through personal interviews with the Centre's personnel, views on the operations and determinants of the QMS were acquired. Results showed that the people's resistance to changes, conflicts on academic freedom, and difficulties on measuring performance were the obstacles to QMS implementation. People involvement and proper communication are determinants of QMS implementation. The system also rests on having a tailored quality manual that entails the documentation of processes and procedures for ascertaining the delivery of quality services and operations in the Centre. The development of quality manual is briefly described in the paper.

• 무역학회지
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• 제44권3호
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• pp.171-189
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• 2019

As many studies have contributed to various aspects of the market by utilizing market orientation, however, this study has tried to overcome limitations of existing studies and suggest more concrete and extended implications. In this study, the relationship between market orientation, responsiveness to market change, and organizational performance of SMEs was examined and compared with characteristics of SMEs (manufacturing and service firms). As a result of the verification, interfunctional coordination has a strong influence on the ability of the organization to respond to market changes as well as customer orientation and competitor orientation. And responsiveness to market change, organizational flexibility has a strong impact on both personal performance and overall team performance. As a result of the comparative study, it can be concluded that manufacturing firms emphasize competitor orientation and organizational agility while service firms emphasize customer orientation and organizational flexibility.

• 농업과학연구
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• 제22권1호
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• pp.11-23
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• 1995

The CAD/CAM system for the manufacturing automation is the newest technology in mechanical engineering area and becomes the important research subject nowadays. Most of all hardwares and softwares for the CAD/CAM system used in the our manufacturing companies such as automobile company are developed by the foreign country and the purchasing price of them is very expensive but their applicability to a certain area is very limited. This study was conducted to develope a CAD/CAM system for the design and the automatic manufacturing of the iron pattern shaped with 3 - dimensional free curved surface, and to test its applicability to the design and the manufacturing of the rotary blade. The results obtained from the study are as follow; 1. The CAD system which can process graphic procedures from the free curved surface shaped data was developed with personal computer. 2. The CAM main program was developed. This main program could produce CL data from CAD data file by checking the tool interference according to the cutting mode. 3. The sub. program which can simulate the tool trace from the CL data was developed. 4. The post processor for the Deckel FP2NC NC milling machine from CL data file was developed and the sub program could transmit NC program through modem to NC milling machine was developed. 5. The developed CAM system seemed to be applicable to any other system. Because the measuring results of the cross sectional thickness of the plastic model from the manufacturing iron pattern by the system showed that this system could properly check the tool interference. 6. In took 75~90 hours to manufacture two iron patterns of rotary blade. For the sake of convenience in applying to the other systems, this system was developed in BASIC and FORTRAN computer language and minimum portion of machine language as possible.

• 한국융합학회논문지
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• 제9권10호
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• pp.55-59
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• 2018

4차 산업혁명 시대에 혁심기술인 빅데이터는 보건, 금융, 유통, 공공부문, 제조업, 마케팅 등 다양한 분야에서 서비스를 제공하고 있으며, 정확하고 신속한 데이터 분석을 통하여 마케팅 분석과 미래 설계에 매우 유용한 기술이며, 앞으로 더 발전할 가능성이 매우 높다. 하지만, 빅데이터 활용 시 가장 큰 문제점이 개인정보 보호와 프라이버시 문제이다. 빅데이터를 이용하여 분석을 통해 기존에 알지 못했던 개인의 취향 및 행동을 분석될 수도 있고, 이러한 정보들은 개인의 민감한 정보이자 개인의 프라이버시 침해가 될 수 있다. 따라서 본 논문에서는 빅데이터 환경에서 개인정보를 활용할 때 발생 가능한 개인정보 침해에 대한 필요 사항들을 분석하여, 그에 따른 필요한 개인정보보호 기술을 제안하여 개인정보 보호와 사생활 보호에 기여하고자 한다.

• 한국정밀공학회지
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• 제33권5호
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• pp.333-339
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• 2016

In this paper, a fundamental experiment regarding the formation of porous 3D structures for personal safety products using 3D PPP (Porous Polymer Printing) was introduced for the first time. The filament was manufactured by mixing PP (Polypropylene) and CBA (Chemical Blowing Agent) with polymer extruder, and the diameter of the filament was approximately 1.75mm. The proposed 3D PPP method, combined with the conventional FDM (Fused Deposition Modeling) procedure, was influenced by process parameters, such as the nozzle temperature, printing speed and CBA density. In order to verify the best processing conditions, the depositing parameters were experimentally investigated for the porous polymer structure. These results provide parameters under which to form a multiple of 3D porous polymer structures, as well as various other 3D structures, and help to improve the mechanical shock absorption for personal safety products.

• 한국산업보건학회지
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• 제9권1호
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• pp.99-111
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• 1999

The purpose of this study was to evaluate crystalline silica contents in airborne respirable dusts from various manufacturing industries and to compare analytical ability of two different methods of quantifying crystalline silica, X-ray diffraction(XRD) and Fourie transform infrared spectroscopy(FTIR). Various manufacturing industries with a history of having pneumoconiosis cases and also known to generate dusts containing crystalline silica were investigated. These industries include: ceramics, brick, concrete, and abrasive material etc. The personal respirable dust samples were collected using l0mm, Dorr-Oliver nylon cyclone equipped with 37mm, $5{\mu}m$ pore size. polyvinylchloride (PVC) filters as collection media. All samples were weighed before and after sampling and were pretreated according to the NIOSH sampling and analytical methods 7500, and 7602 for dust collection and quartz analysis. A total of 48 samples were collected from these industries. Initial analyses of these samples showed log-normal distributions for dust and quartz concentrations. Some results from ceramics and stone exceeded current Korean Occupational Exposure Limits. The average concentrations of personal respirable dust by cyclone were 0.43, 0.24, 0.26, 0.42, 0.53 and $0.29mg/m^3$ in ceramics, stone, concrete, glass, briquets, and others, respectively. A comparison of performance of two analytical methods for quantifying crystalline silica was performed using data from ceramics. The results showed that no significant difference was found between two methods for ceramics. The mean crystalline silica contents determined by XRD were 3.41 % of samples from briquets and 7.18 % from ceramics and were 2.58 % from concrete and 10.33 % from ceramics by FTIR. For crystalline silica analysis, two analytical techniques were highly correlated with $r^2=0.81$ from ceramics. Both cristobalite and tridymite were not detected by XRD and FTIR.

• 한국의상디자인학회지
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• 제15권2호
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• pp.151-162
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• 2013

Studying employees' personality and relationship to their job would help to improve high unemployment and turnover rate in the current Korean fashion and textile industry. Based on personality which is an important influential factor, this research studied types of fashion and textile-related occupations and differences among employees' personalities related to the types. Using disclosed data from Korea Employment Information Service, 27 fashion and textile-related occupations were selected for the final analysis. Ward's Minimum Variance Cluster Analysis, MANOVA, and ANOVA by SAS 9.3 was used to analyze data. First, fashion and textile-related occupations were classified into three groups. Group 1 was mostly consisted of occupations related to manufacturing process of fashion and textile including mechanical technicians. Group 2 included occupations in garment designing and manufacturing. Designers and manufacturers including shoes, bags, and jewelry belong to group 3. Second, after observing differences in personalities among the three groups, group 1 answered that most of the personalities were not important for performance of their duties, group 2 said that only some of them were important, and group 3 regarded most of them as important. Specifically, group 1 considered precision as the most important personality but rest of the personalities not as necessary. It was revealed that personalities in relationship with other personnel such as sociality and leadership were not important. The results in this study will be used for analyzing whether job seekers' desired occupations in fashion field corresponds to their personalities and is expected to become a basic data of students' career counseling for educators.

• 한국기계가공학회지
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• 제17권6호
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• pp.7-15
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• 2018

We propose a method for evaluating sound quality quantitatively to develop high-level home appliances (HA). Generally, a refrigerator has diverse movable parts such as slider, drawer, and folding shelf. Therefore, an engineering treatment to control the noise quality is considered as one of key technologies for a higher level refrigerator. Among the movable parts, we have selected a folding shelf as an example, which is commonly setup inside of a home refrigerator for increasing space convenience, to control the noise quality. However, it is known that its noise level is very high comparing to other movable parts when folding or unfolding actions. In order to evaluate and compare the noise quality, we have tested different eighteen models, and have suggested an impact sound quality index (ISQI) based on subjective evaluation data obtained experimentally by thirty two evaluators. The ISQI was formulated using three sound quality elements (noise peak, raising time, impact duration) to determine psycho-acoustic properties. Through this work, we developed an evaluating process and ISQI that was verified the usefulness by comparing the test results of personal perceptions given by evaluators with the prediction value of ISQI. We showed a good relations between them, so we believe that the proposed method and ISQI can be utilized to control of the noise quality of HA effectively.