• The tire
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• s.204
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• pp.60-62
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• 2000

• The tire
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• s.227
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• pp.41-43
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• 2006

• The tire
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• s.77
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• pp.21-24
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• 1978

'77년도 미국의 타이어ㆍ고무 메이커의 업적발표를 살펴보면, '76년도 미국 고무노조의 장기스트라이크로 인하여 대폭적인 증수ㆍ증익을 기록하고 있다. 그러나 각사의 업적은 '77년 초부터 연말까지 하강선을 이루고 있으며 앞으로의 전망에 대해서도 염려하고 있다. 그리고 끝으로 서독 콘티넨탈사의 77년도 업적을 추가하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.304-307
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• 2020

자동차 애프터 마켓 시장은 관련 기술의 진전과 함께 비약적인 발전을 거듭하여 여러 자동차 애프터 마켓 상품이 개발됨과 동시에 가파른 성장세를 보이고 있다. 다양한 기술과 차량의 점검과 관리를 위해 차량운전자와 정비사가 동시동소에 있어야 하는 제약을 해결하기 위해 본 논문에서는 IoT를 이용한 차량정보 전송 및 활용 기술을 소개하고자 한다. 본 기술은 S/W로 CAN통신, WEB 서버, DB, MQTT, WIFI 등의 기술을 사용하였고, H/W로 ESP 32, Rasberry Pi 4를 사용하고 있다.

• Journal of the Korean Society of Costume
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• v.58 no.2
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• pp.149-161
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• 2008

The purpose of this study is to consider the origin and kinds of tango and to analyze formative characteristics of tango dance costume. On the basis of the review of literature about tango, photos of tango dance and modern fashion collections designed by tango themes are analysed to examine design elements which are essentially considered in dance costume design. The result of this study are as follows: This study shows the different characteristics of tango dance costume depend on the kind of tango. In case of Argentina tango, sheath silhouette dress and black color are preferred, for Continental tango, fit and flare silhouette which gives convenient movement in dress and white color emphasize the elegant movement are preferred. America tango accentuates the body movement by fitted silhouette, metallic materials, and bead trimmings in dress. The result of the analysis of recent fashion collection shows that characteristics especially strong and sensual tango are mainly an inspiring motive and reinterpreted by designers in modern fashion.

• Economic and Environmental Geology
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• v.24 no.4
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• pp.447-463
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• 1991

Petrological and chemical studies of Precambrian dikes in the southern Lake Superior region were conducted with the objects of evaluating magma source and constraining models for the paleo-tectonic environment. Forty-six samples were analyzed for major, trace, and rare earth elements. Chemical data of the studied dikes are typical of continental tholeiites and showing iron-enrichment fractionation trend. With wallrock contamination carefully evaluated, a series of tectonic discriminating methods utilizing immobile trace elements indicate that the source magma was a high-Ti tholeiitic basalt similar to present-day T-type MORB. Effect of chemical contamination from wallrock assimilation accmulates with increasing differentiation. Evolved rocks show LREE enriched patterns and have enhanced levels of LIL elements (e.g., Rb, K, Ba, Th), but low levels of high field strength elements (e.g., Nb, P, Ti) with respect to their neighboring elements. It is suggested from this study that this enrichment possibly due to a combination of a feature inherited from the subcontinental lithosphere and crustal contamination. Geochemical signatures of these rocks are distinctively different from those of arc-related volcanics. Comparisons with chemistries of modern magmas show a pattern of overlap between Within-plate and ocean-floor characteristics, and chemical signatures of these rocks favor a model of intrusion into a crustal environment undergoing lithospheric attenuation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.12
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• pp.688-701
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• 2020

This study analyzes the characteristics and change factors of technological cooperation networks in the automotive industry. Using Social Network Analysis (SNA) of 112,009 autonomous driving-related patents filed from 2000 to 2017 by major automotive firms in the world, we investigate the structure of the technological cooperation network. Network characteristics such as density are analyzed through structural characteristic analysis among the network analysis indicators. The structural characteristics of the technology cooperation network are confirmed through analysis of status characteristic indicators, such as the degree of centrality, betweenness centrality, and closeness centrality. Results show that car makers such as Toyota and Hyundai Motors, as well as parts suppliers such as Bosch and Continental, have high-performance technology developments related to autonomous driving. The structural characteristics of the network show that companies participating in cooperative networks for autonomous driving technology development have increased in number and are diversified, and all of the status characteristics indicators have decreased. This can be interpreted as an increasing number of horizontal and complementary forms of technological cooperation between firms. In addition, it was confirmed that the number of participants in the field of autonomous driving technology has increased, and the networks have become more complex.

• Journal of the Korea Society for Simulation
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• v.32 no.3
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• pp.93-108
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• 2023

In manufacturing productivity analysis, understanding the intricate interplay among factors like facility performance, layout design, and workforce allocation within the production line is imperative. This paper introduces a simulation-based methodology tailored to food manufacturing, progressively expanding scenarios to analyze production enhancement. The target system is a food processing plant, encompassing production processes, including warehousing, processing, subdivision, packaging, inspection, loading, and storage. First, we analyze the target system and design a simulation model according to the actual layout arrangement of equipment and workers. Then, we validate the developed model reflecting the real data obtained from the target system, such as the workers' working time and the equipment's processing time. The proposed model aims to identify optimal factor values for productivity gains through incremental scenario comparisons. To this end, three stages of simulation experiments were conducted by extending the equipment and worker models of the subdivision and packaging processes. The simulation experiments have shown that productivity depends on the placement of skilled workers and the performance of the packaging machine. The proposed method in this study will offer combinations of factors for the specific production requirements and support optimal decision-making in the real-world field.