• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2004년도 학술대회지
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• pp.729-734
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• 2004

The e-Logistics means the virtual business activity and service architecture among the logistics companies based on the Internet technology. The management of vehicles' location in most conventional vehicle tracking system has some critical defects when it deals with data which are continuously changed. It means the conventional vehicle tracking system based on the conventional database is unable eventually to cope with the environment that should manage the frequently changed location of vehicles. The important things in the evaluation of the vehicle tracking system is to determine the threshold of cost of database ,update period and communication period between vehicles and the system. In other words, the difference between the reallocation of vehicle and the data in database can evaluate the overall performance of vehicle tracking systems. Most of the previous works considers only the information that is valid at the current time, and is hard to manage efficiently the past and future information. To overcome this problem, the efforts on moving objects management system(MOMS) and uncertainty processing have been started from a few years ago. In this paper, we propose an uncertainty processing model and system implementation of moving object that tracks the location of the vehicles. We adopted both linear-interpolation method and trigonometric function to chase up the location of vehicles for the past time as well as future time, respectively. We also explain the comprehensive examples of MOMS and uncertainty processing in parcel application that is one of major application of e-Logistics domain.

• 대한안전경영과학회지
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• 제11권4호
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• pp.221-228
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• 2009

Electronic Product Code Information Services(EPCIS) is an EPCglobal standard for sharing EPC related information between trading partners. EPCIS provides a new important capability to improve efficiency, security, and visibility in the global supply chain. EPCIS data are classified into two categories, master data (static data) and event data (dynamic data). Master data are static and constant for objects, for example, the name and code of product and the manufacturer, etc. Event data refer to things that happen dynamically with the passing of time, for example, the date of manufacture, the period and the route of circulation, the date of storage in warehouse, etc. There are four kinds of event data which are Object Event data, Aggregation Event data, Quantity Event data, and Transaction Event data. This thesis we propose an event-based data model for EPC Information Service repository in RFID based integrated logistics center. This data model can reduce the data volume and handle well all kinds of entity relationships. From the point of aspect of data quantity, we propose a formula model that can explain how many EPCIS events data are created per one business activity. Using this formula model, we can estimate the size of EPCIS events data of RFID based integrated logistics center for a one day under the assumed scenario.

• 한국항해항만학회지
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• 제33권8호
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• pp.595-602
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• 2009

본 연구는 부산항만공사 설립 전과 후에 대하여 항만의 주요고객인 선사(대형선사, 피더선사)와 터미널 운영사를 중심으로 컨테이너 터미널이용에 대한 고객만족 요인을 연구하는 것을 연구의 목적으로 하였으며, 연구결과 고객유형별로 만족도가 다르며, 고객의 니즈가 환경변화에 따라 변하고 있음을 확인하였다. 즉, 대형선사는 터미널 선석 수에, Feeder선사는 연계운송수단의 편리성과 예정된 시간의 입출항을, 터미널 운영사는 고객유치활동에 있어서 만족에 대한 인식차이가 큰 것으로 나타났다. 따라서 목표고객을 선정한 후 목표 고객에 맞는 서비스 전략을 수립해 나가야 할 것이다.

• The Journal of Asian Finance, Economics and Business
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• 제9권2호
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• pp.177-183
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• 2022

The COVID-19 pandemic has hurt the economy and negatively impacted all enterprises' financial performance. The COVID-19 pandemic has put a strain on global manufacturing capacity and supply chains, and it is also the pandemic that has given up new opportunities for the logistics industry to develop as e-commerce has developed. By analyzing the financial performance of logistic firms listed on the Vietnam Stock Exchange, this study tries to quantify those consequences. A total of 114 logistic companies were included in the study's sample. The Wilcoxon Signed Rank Test was performed to test the difference between some ratios in 2019 and 2020. This study found that the financial performance of 114 logistic firms listed on the Vietnam stock exchange has not improved. The data show that during the COVID-19 pandemic, the leverage ratio increased while the profitability and efficiency ratios decreased. The liquidity ratio did not show any significant differences. On the contrary, these businesses' performance, such as returns on assets, receivable turnover, and leverage, has decreased. The COVID-19 had a global impact on supply chains, therefore export activity and international transportation were badly hampered, with only a few domestic logistic enterprises growing.

• 한국유통학회지:유통연구
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• 제2권1호
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• pp.197-213
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• 1997

It is becoming very difficult for a single company to perform every process and activity required to bring its product or service to market in a competitive manner. Consequently, we are observing a dramatic paradigm shift, with companies moving from performing all activities in-house to selective outsourcing for non-core elements of their business. Through outsourcing, companies can focus on their core competencies, reduce costs, improve quality and increase flexibility. Companies today can no longer afford to ignore the potential opportunities realized through mutually beneficial outsourcing relationships with third-party suppliers. The outsourcing opportunities exist in almost every business process. Many successful companies have implemented effective outsourcing relationships with third party suppliers to gain competitive advantage in a wide range of areas. However, in terms of logistics, it is not so easy to find those companies in our country. Consequently, this paper reviews previous researches and describes several topics in third party logistics such as advantages and disadvantages, how can we select third party suppliers, and so on.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집
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• pp.388-395
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• 2009

The objectives of this study are to analyze the railway traffic conditions of Korea, China and Japan, and to appropriate the railway network planning for international logistics in Northeast Asia. Korea is located geographically on the main trunk route in Northeast Asia. Considering the geographical advantage and the overall potential of the economic and trade in Northeast Asia region, this area is required to connect the railway network. Recently, the scale of economic in Northeast Asia, including Korea, China and Japan, is increasing, also Northeast Asia's gross domestic product(GDP) is 22 percent of global and containers trade come up to 36 percent. Each country intend about integration of economic region for activity of mutual economic cooperation, for steady development and prosperity of each country economic all over the world, and Northeast Asia countries are in debate. There is a quite possibility of integration by a single economic region in Korea, China and Japan. Accordingly these countries should have expansion of traffic infrastructure, when the economic region is going to integration.

• 한국항만경제학회지
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• 제28권3호
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• pp.45-72
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• 2012

본 연구의 목적은 최근 10년간 일본의 5대 종합상사의 경영활동과 경영성과에 대한 데이터를 이용하여, 에너지 자원사업에서 나타난 경영성과의 의의 그리고 에너지 자원사업에 있어서의 국제물류기능에 대한 고찰을 수행하는 것이다. 연구내용으로는 선행연구 분석, 종합상사의 경영성과 분석, 에너지 자원사업의 국제물류기능에 대한 분석으로 구성된다. 분석방법으로는 회계 및 재무 데이터에 대한 통계적 분석과 조직분석, 사례분석을 이용하였다. 본 연구에서 일본 종합상사가 2000년대 10년간 에너지 자원사업에서 성공적으로 높은 매출 성장과 순이익을 달성한 사실을 밝힌다. 종합상사의 에너지 자원사업부문의 성공은 자원보유국에 대한 적극적 개발권익 확보와 국내외 관련회사에 대한 장기적 투자, 관련회사간의 공급연쇄체계 구축이라는 기업노력에서 성공 이유를 찾을 수 있다. 특히, 본 연구는 에너지 자원사업의 수직적 통합에서 국제물류기능의 중요성을 재인식하고 국제물류의 사업투자에 힘을 쏟는 종합상사의 역할을 설명하고자 하였다. 종합상사는 에너지 자원사업의 하류영역에서 상류영역에 이르는 비즈니스를 유기적으로 조직화하여 왔고, 최근 중류영역에서도 종합상사의 조직화기능, 투자사업기능, 정보 분석 및 제공기능을 충분히 발휘하고 있다. 종합상사의 국제물류기능의 강화는 에너지 자원의 생산, 물류, 유통판매에 이르는 비용을 통제할 수 있어 상품의 가격과 품질의 경쟁력을 높이는 데 도움을 줄 것이다.

• 한국산업정보학회논문지
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• 제12권5호
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• pp.183-200
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• 2007

본 연구는 전통적인 오프라인 기업인 항만물류기업이 온라인 영업활동을 도입함으로써 얻을 수 있는 대표적인 기대효익 요인과 마케팅믹스 및 글로벌 경쟁력간의 관계를 분석한다. 대표적인 기대효익 요인으로 신뢰증진, 정보입수, 오프라인 제약 등 세 가지 요인들이 추출되었다. 실증적으로 추출된 이 세 가지의 온-오프라인 시너지 효익요인들이 해당 항만물류기업의 마케팅믹스와 글로벌 경쟁력을 얼마나 향상시키는가를 분석하였다. 구조방정식모형을 이용한 분석 결과, 기대효익 요인들은 해당기업의 마케팅믹스 요인에 유의한 영향을 미치는 것으로 나타났으며, 마케팅믹스 요인은 글로벌 경쟁력에 큰 영향을 미치는 것으로 나타났다. 이러한 결과는 항만물류기업이 글로벌 경쟁력을 증진하기 위한 마케팅믹스 전략을 개발하는데 유용한 방향을 제시하고 있다.

• Molecules and Cells
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• 제46권6호
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• pp.387-398
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• 2023

Microtubule acetylation has been proposed as a marker of highly heterogeneous and aggressive triple-negative breast cancer (TNBC). The novel microtubule acetylation inhibitors GM-90257 and GM-90631 (GM compounds) cause TNBC cancer cell death but the underlying mechanisms are currently unknown. In this study, we demonstrated that GM compounds function as anti-TNBC agents through activation of the JNK/AP-1 pathway. RNA-seq and biochemical analyses of GM compound-treated cells revealed that c-Jun N-terminal kinase (JNK) and members of its downstream signaling pathway are potential targets for GM compounds. Mechanistically, JNK activation by GM compounds induced an increase in c-Jun phosphorylation and c-Fos protein levels, thereby activating the activator protein-1 (AP-1) transcription factor. Notably, direct suppression of JNK with a pharmacological inhibitor alleviated Bcl2 reduction and cell death caused by GM compounds. TNBC cell death and mitotic arrest were induced by GM compounds through AP-1 activation in vitro. These results were reproduced in vivo, validating the significance of microtubule acetylation/JNK/AP-1 axis activation in the anti-cancer activity of GM compounds. Moreover, GM compounds significantly attenuated tumor growth, metastasis, and cancer-related death in mice, demonstrating strong potential as therapeutic agents for TNBC.

• Journal of the Korean Wood Science and Technology
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• 제45권1호
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• pp.116-125
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• 2017

본 연구는 폭쇄처리된 신갈나무로부터 유래된 열수추출물의 안전성 및 항산화성 효과에 대해 검토하였다. 안전성 시험으로는 세포독성실험, 경구투여 독성시험이 실시되었으며, 신갈나무 폭쇄처리 열수추출물의 항산화성 유무를 확인하기 위해서 실험동물은 일본 Air Logistics사의 4주령 B6C3F1 숫컷 생쥐로 다섯 군(1군 10마리)으로 나누어서 실험을 하였다. 신갈나무 폭쇄처리 열수추출물의 세포독성 및 경구투여 독성시험의 결과로 독성은 관찰되지 않았으며, 신갈나무 폭쇄처리 열수추출물의 투여군에서 과산화물분해효소의 활성이 29% 이상 증가하여 과산화물분해효소의 활성이 유의적으로 인정되었다. 따라서 신갈나무 폭쇄처리 열수추출물은 뛰어난 안전성과 항산화성이 있음을 확인하였다.