• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.1007-1012
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• 2005

Although the design-build (DB) delivery system has been taking great strides in the world and relevant researches have also been quite abundant, few studies have dealt with its potential impacts on the construction industry as a whole. This research first identified the potential entry barrier factors, which may hinder the market access, based on the theory of industrial economics and characteristics of DB project. Then through a nation-wide questionnaire survey involving 103 construction contractors and engineering consultants, the influences of each factor on company's competitiveness and corporate strategies were scrutinized, and consequently, the evolution of the construction industry was examined. It is found that as opposed to the traditional design-bid-build delivery system, the DB delivery system elevates competitive advantages of large organizations in terms of the financial capability, working experience, human resource, and administrative strength, and among them, the financial strength was concluded to be the most significant force in differentiating corporate strategies and widening the gap of competitiveness between companies. It is inferred if the government extensively adopts DB delivery system, large organizations that already possess the competitive advantage tend to obtain both design and construction abilities, and dominate the DB market. Small and medium sized companies will find little room to maneuver and be forced to become specialty sub-contractors.

• 한국컴퓨터정보학회논문지
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• 제27권8호
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• pp.151-160
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• 2022

본 연구에서는 급증하는 배송 서비스 수요에 맞춰 더 신속하고 최저 비용으로 근거리 배송을 가능하게 하는 알고리즘을 제안하고자 한다. 본 연구에서 제안하는 알고리즘에서는 배송원으로 지하철 승객을 물류 이동에 참여시킨다. 이때 승객은 이동 경로와 일치하는 배송 물류를 선택할 수 있다. 그리고 서비스 이용자의 입장에서는 현재 근처에 경로가 일치하는 배송원을 선택할 수 있다. 이때 배송원 추천은 TF-IDF&N-gram과 BERT를 결합한 텍스트 유사도 측정 방식으로 진행된다. 따라서 기존 택배 시스템과 달리 소비자-배송원 간의 man-to-man 방식으로 양방향 선택을 지원한다. 탑승 중인 승객을 물류 이동에 참여시킨다는 점에서 비용 최소화와 배송 기간 단축을 모두 보장할 수 있다. 더하여 운송 측면에서도 특별한 기술을 요하지 않으므로, 일자리 입지가 축소된 노동자들에게 경제 참여 기회를 제공할 수 있다는 점에서도 의의가 있다.

• 산업경영시스템학회지
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• 제45권4호
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• pp.225-232
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• 2022

Recently, unmanned logistics delivery systems, such as UAV (Unmanned Aerial Vehicle, written as drone below) and autonomous robot delivery systems, have been implemented in many countries due to the rapid development of autonomous driving technology. The development of these new types of advanced unmanned logistics delivery systems is essential not only to become a leading logistics company but also to secure national competitiveness. In this paper, the application of the unmanned logistics delivery system was investigated in terms of market trends, overall technology level of last mile delivery drone and autonomous delivery robot. The direction of response to changes in the last mile delivery service market was checked through a comparison of the technological level between domestic companies that produce last mile devices and advanced foreign companies. As a result of this technology level analysis, the difference between domestic companies and advanced companies was shown using tables and figures to show their relative levels. The results of this analysis reflect the opinions of experts in the field of last-mile delivery technology. In addition, the technology level of unmanned logistics delivery systems for each country was analyzed based on the number of related technology patents. Lastly, insights for the technology level analysis of unmanned last mile delivery systems were proposed as a conclusion.

• Journal of Dental Anesthesia and Pain Medicine
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• 제18권6호
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• pp.367-373
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• 2018

Background: Fear of local anesthesia (LA) is a significant impediment to dental care as many patients delay or avoid treatment to avert pain. Computer-controlled local anesthetic delivery system (CCLAD), with constant and controlled rate of flow, present a painless alternative. The present study aimed to compare anxiety and pain perceived with conventional and computerized systems, for different stages of anesthesia delivery when administering various nerve blocks. Methods: One hundred patients requiring bilateral LA participated in the study. One side was anesthetized using one system and the contralateral side was anesthetized using the other, in two separate appointments. Patients assigned anxiety scores on a 5-point scale and used the visual analogue scale (VAS) for pain determination at needle insertion, during delivery of anesthetic solution, immediately after injection, and at the end of the periodontal procedure. Each patient's preference for the delivery system of future injections was also recorded. Results: Patients reported significantly lower anxiety levels with CCLAD compared to the syringe. Significantly lower mean VAS scores for anesthesia deposition, pain immediately after, and at the end of the periodontal procedure were also noted. However, pain at needle insertion was comparable between the two systems, with no statistical significance. Overall, 64.4% patients preferred CCLAD for future anesthesia. Conclusion: Lower pain perceived with CCLAD and higher preference for the system suggest that CCLAD should replace conventional syringes to allow pain-free dental treatment.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2010년도 춘계학술대회 논문집
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• pp.1435-1436
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• 2010

• Archives of Pharmacal Research
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• 제25권6호
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• pp.964-968
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• 2002

Colon drug delivery is advantageous in the treatment of colonic disease and oral delivery of drugs unstable or suceptible to enzymatic degradation in upper GI tract. In this study, multilayer coated system that is resistant to gastric and small intestinal conditions but can be easily degraded by colonic bacterial enzymes was designed to achieve effective colon delivery of prednisolone. Variously coated tablets containing prednisolone were fabricated using chitosan and cellulose acetate phthalate (CAP) as coating materials. Release aspects of prednisolone in simulated gastrointestinal fluid and rat colonic extracts (CERM) were investigated. Also, colonic bacterial degradation study of chitosan was performed in CERM. From these results, a three layer (CAP/Chitosan/CAP) coated system exhibited gastric and small intestinal resistance to the release of prednisolone in vitro most effectively. The rapid increase of prednisolone in CERM was revealed as due to the degradation of the chitosan membrane by bacterial enzymes. The designed system could be used potentially used as a carrier for colon delivery of prednisolone by regulating drug release in stomach and the small intestine.

• 컴퓨터교육학회논문지
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• 제8권4호
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• pp.71-77
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• 2005

유치원과 초등학교 저학년의 교육에서는 학교와 학부모 사이의 유기적인 정보전달이 대단히 중요한데, 어린 학생들의 특성상 학생들을 중간매개체로 해서 학교와 학부모 사이의 정보를 전달하는 기존의 방법들은 신속하고 정확한 정보전달에 한계를 갖는다. 이에 본 논문에서는 인터넷 홈페이지와 휴대폰의 메시지 서비스를 결합한 학교와 학부모 사이의 정보전달 방법을 제안하고, 이를 반영한 정보전달 시스템을 설계 구현하였다. 본 논문의 제안방법과 구현시스템은 유효시간 내에 정보를 정확하게 전달하면서도 통신비용과 교사의 업무량을 크게 증가시키지 않는다.

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2006년도 추계학술대회
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• pp.240-247
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• 2006

We assess service delivery system for outpatients of general hospital(A) using. service blueprint. Service blueprint for outpatients' service process currently being implemented in general hospital(A) is analysed to improve hospital services and define hospital service delivery system more accurately. In addition, comparative analysis of service blueprint before and after improvement was conducted to find that health care services is now more customer-oriented and hospital employees can link their duties with service delivery system. The analysis of service blueprint of outpatients' service process suggested in this study are useful for setting strategies for health care service. It also helps service process design and service digitalization of other general hospitals in the future.

• Journal of Pharmaceutical Investigation
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• 제22권4호
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• pp.251-266
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• 1992

A major problem with the peptide-based drugs is that these drugs must generally be administered by injection. Therefore, there is considerable research interest in alternative routes of delivery, such as buccal, nasal, gastrointestinal route and etc. Site-specific drug delivery to the colon, as an alternative to parenteral drug delivery, is of interest for the delivery of peptide-based drugs as well as the delivery of low molecular weight drugs for the treatment of colonic disease, This review describes some considerations of colon-specific drug delivery using hydrogels.

• 대한임베디드공학회논문지
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• 제18권5호
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• pp.249-257
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• 2023

This paper discusses the increasing need for autonomous delivery robots due to the current growth in the delivery market, rising delivery fees, high costs of hiring delivery personnel, and the need for contactless services. Additionally, the cost of hardware and complex software systems required to build and operate autonomous delivery robots is high. To provide a low-cost alternative to this, this paper proposes a autonomous delivery robot platform using a low-cost sensor combination of 2D LIDAR, depth camera and tracking camera to replace the existing expensive 3D LIDAR. The proposed robot was developed using the RTAB-Map SLAM open source package for 2D mapping and overcomes the limitations of low-cost sensors by using the convex hull algorithm. The paper details the hardware and software configuration of the robot and presents the results of driving experiments. The proposed platform has significant potential for various industries, including the delivery and other industries.