• International Journal of Computer Science & Network Security
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• 제22권6호
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• pp.139-144
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• 2022

Technological advancements taken the health care industry by a storm by embedding sensors in human body to measure their vitals. These smart solutions provide better and flexible health care to patients, and also easy monitoring for the medical practitioners. However, these innovative solutions provide their own set of challenges. The major challenge faced by embedding sensors in body is the issue of lack of infinite energy source. This work presents a meta-heuristic based routing model using modified PSO, and adopts an energy harvesting scheme to improve the network lifetime. The routing process is governed by modifying the fitness function of PSO to include charge, temperature and other vital factors required for node selection. A reactive routing model is adopted to ensure reliable packet delivery. Experiments have been performed and comparisons indicate that the proposed Energy Harvesting and Modified PSO (EHMP) model demonstrates low overhead, higher network lifetime and better network stability.

• International Journal of Internet, Broadcasting and Communication
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• 제14권1호
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• pp.209-218
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• 2022

Today, with the development of the Internet and mobile technology, consumers' purchasing patterns have shifted from offline to online. In addition, due to the recent COVID-19, online purchases have significantly increased, and accordingly, the courier industry for logistics delivery has also grown significantly. Various logistics robots are being operated in many industrial and can reduce the labor intensity and physical and mental fatigue of workers. However, if the logistics robot does not properly recognize the people or environment around it, it can lead to a serious accident. We conducted that how logistics robots can perform safe work in a working environment such as a logistics warehouse through the application of ISO/DIS 21448 (SOTIF) to autonomous logistics transport robots. This result is expected to contribute to the operation of unmanned logistics warehouses using AGV.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.537-543
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• 2009

Noting the changes within the Singapore construction industry, fuelled by the government's 'green' initiatives in tandem with the prolonged effect of the 1997-2005 recession, this paper investigates Singapore contractors' attitudes towards environmental sustainability. Data were collected from 34 interviews with senior management of large and medium-sized general building contractors and the firms' archival records. The results show that the majority of the contractors embrace positive attitudes towards environmental sustainability. The respective contractors explicitly express their environmental drives by incorporating keywords such as 'quality', 'sustainability' and 'environmental and social benefits' into their firms' mission statements. The results also show that three environmental-related measures implemented by all contractors are: (i) stricter housekeeping procedures in construction sites; (ii) stricter wastage rates for construction materials; and (iii) greater focus on Just-In-Time delivery to minimise materials deterioration due to inappropriate site storage.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.124-131
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• 2011

Public infrastructure is crucial to promote and sustain a sustainable economic growth and a health community. A large amount of capital investment is generally required in infrastructure projects that motivate the involvement of the private sector in the delivery process. Various relationship-based procurement methods have been attempted to maximize value-for-money. In this paper, the problems and challenges that relationship-based procurement methods have been facing are explored. A particular focus is placed on the challenges for the public-private partnership (PPP) model. Possible strategies for adapting the PPP models in the post-Global Financial Crisis era are proposed and discussed. In addition, the challenges facing alliancing, which is one of the other important relationship-based procurement methods, are also examined. Views on infrastructure procurement in the future were sought from industry professionals via interviews and are reported in this paper as well.

• International journal of advanced smart convergence
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• 제13권3호
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• pp.199-204
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• 2024

In the context of exploring how Artificial Intelligence(AI) can revolutionize the entertainment industry, more and more film and television productions have begun to try to intervene AI technology in various aspects of content creation. However, despite the fact that AI can generate a large amount of textual content and dynamic visual effects, it still faces challenges in terms of plot expression and delivery. This thesis explores the strengths and weaknesses, innovations, and future developments of AI technology in plot production by analyzing existing film and television productions and production practices generated using AI technology. The study proves that as AI technology continues to improve, its use in short-form production will become more and more prevalent in the future, helping human creators become more efficient and even able to produce Short Dramas in full flow.

• Journal of Photoscience
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• 제9권2호
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• pp.451-453
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• 2002

A new concept of "photo" -antisense method has been evaluated, where the inhibition of gene expression by the conventional antisense method is enhanced by photochemical binding between antisense oligonucleotides conjugated with photo-reactive compound and target mRNA or DNA. Fluorescein labeled oligodeoxyribonucleotides (F-DNA) was delivered to cell nuclei in the encapsulated form in multilamellar lecithin liposomes with neutral charge. F-DNA was previously shown to photo-bind to the complementary stranded DNA, and the delivery system using neutral liposome to be effective in normal human keratinocytes. In the present study, we used human kidney cancer G401.2/6TG.1 cell line to be advantageous in reproducible experiments. p53 was adopted as a target gene since antisense sequence information has been accumulated. The nuclear localization ofF-DNA was identified by comparing the fluorescence ofF-DNA with that of Hoechst 33258 under fluorescence microscope. After 7hr incubation to accumulate p53 protein induced by UV -B, p53 protein was quantified by Western blot. After 2hrs from F-DNA application, about 30% of cell population incorporated F-DNA in their nuclei with some morphological change possibly due to liposomal toxicity. Irradiation of visible light longer than 400nm from solar simulator at this time enhanced the inhibitory action of antisense F-DNA. The present results suggest that photo-antisense method is promising to control gene expression in time and space dependent manner. Further improvement of F-DNA delivery to cancer cells in the stability and toxicity is in progress. progress.

• 전자공학회논문지
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• 제53권6호
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• pp.21-28
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• 2016

본 논문은 수중 음파 센서 네트워크의 패킷 전송률을 높이고 에너지 소모량을 줄이기 위한 협력 전송 기법을 제안한다. 제안하는 기법은 각 노드에서 가상 안테나 배열이라고 부르는 분산 안테나들이 같은 패킷들을 전송하고, 수신노드에서는 수신된 패킷들을 결합하여 패킷 손실률을 낮춘다. 따라서 높은 전송 손실, 전파 지연 및 주위 잡음과 같은 수중 채널의 고유 특성을 고려한 채널 특성 기반의 협력 전송 기법은 중계노드들을 통한 높은 다이버시티 이득을 제공하여 수중 음파 센서 네트워크의 신뢰성을 향상시킨다. 또한 송신노드에서 채널 상태, 거리 비용, 각 노드 당 남은 에너지를 고려하여 이웃노드들 중에서 목적지와 중계노드를 선택하는 알고리즘을 제안한다. 모의실험 결과는 OPNET Moduler를 통해 제안된 방법의 평균 에너지 소비, 패킷 전달 비율, 응답 시간 측면에서 비-협력 기법 및 SPF(Shortest Path First) 기법보다 향상된 성능을 보여준다.

• IMMUNE NETWORK
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• 제13권4호
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• pp.157-162
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• 2013

Application of vaccine materials through oral mucosal route confers great economical advantage in animal farming industry due to much less vaccination cost compared with that of injection-based vaccination. In particular, oral administration of recombinant protein antigen against foot-and- mouth disease virus (FMDV) is an ideal strategy because it is safe from FMDV transmission during vaccine production and can induce antigen-specific immune response in mucosal compartments, where FMDV infection has been initiated, which is hardly achievable through parenteral immunization. Given that effective delivery of vaccine materials into immune inductive sites is prerequisite for effective oral mucosal vaccination, M cell-targeting strategy is crucial in successful vaccination since M cells are main gateway for luminal antigen influx into mucosal lymphoid tissue. Here, we applied previously identified M cell-targeting ligand Co1 to VP1 of FMDV in order to test the possible oral mucosal vaccination against FMDV infection. M cell-targeting ligand Co1-conjugated VP1 interacted efficiently with M cells of Peyer's patch. In addition, oral administration of ligand-conjugated VP1 enhanced the induction of VP1-specific IgG and IgA responses in systemic and mucosal compartments, respectively, in comparison with those from oral administration of VP1 alone. In addition, the enhanced VP1-specific immune response was found to be due to antigen-specific Th2-type cytokine production. Collectively, it is suggested that the M cell-targeting strategy could be applied to develop efficient oral mucosal vaccine against FMDV infection.

• 한국조리학회지
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• 제20권1호
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• pp.1-17
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• 2014

호텔 업계에서 고객접점 직원들의 서비스 지향적인 조직시민행동의 선행요인에 관한 연구의 필요성이 제기되어, 본 연구는 목표지향성을 선행요인으로 하여, 서비스 지향적인 조직시민행동에 미치는 영향에 관하여 연구하고자 실시하였다. 선행연구를 바탕으로 하여, 목표지향성은 성취-목표 지향성과 배움-목표 지향성으로 나누어졌으며 이 요인들과 서비스 지향적인 조직시민행동의 하위요인(충성도, 서비스 전달, 참여성) 간의 관계 가설이 설정되었다. 특 1급 호텔 직원 266명의 설문이 분석되었다. 분석을 위해, SPSS 19.0과 AMOS 20.0을 이용하여 기술통계분석, 다변량분석, 구조방정식 모형분석이 실시되었다. 그 결과, 배움-목표 지향성은 충성도, 서비스 전달, 참여성 모두에게 긍정적인 영향을 미치는 것으로 나타났다. 반면, 성취-목표 지향성은 충성도를 제외한 두 하위 요인에 긍정적인 영향을 미치는 것으로 나타났다. 이러한 결과는, 호텔 경영인들이 특정한 목표를 진심으로 지향하는 지원자를 발굴할 필요성을 시사한다. 나아가, 호텔조직은 구성원들의 목표지향성을 이용해서, 그들의 성과 향상에 동기를 부여할 필요성을 제시한다.

• 한국통신학회논문지
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• 제24권7B호
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• pp.1211-1219
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• 1999

1990년 중반 경에 주문형 비디오 서비스와 같은 고품질 실시간 대화형 멀티미디어 서비스가 많은 기대에도 불구하고 서비스 실용화에는 실패했었다. 실패의 주 요인으로는 충분한 대역폭 및 품질 보장 서비스를 지원하는 기반 통신망의 부재 때문이다. 한편, 컴퓨터 저장 장치 기술의 눈부신 발전으로 인해 저장장치 가격이 기하급수적으로 내리고 있다. 이러한 사실과 디지털 형태로 정적.동적 멀티미디어 정보를 댁내 저장장치로의 비실시간 전송 기술은 새로운 개념의 다양한 멀티미디어 서비스 응용을 가능하게 한다. 서비스 예로는 오락 및 교육 컨텐츠 전달, 내장 참조링크, 그리고 시청 중 방송 프로그램 캡쳐 응용들이 있다. 이는 사용자의 참여없이 임의의 시간(예, 통신망 사용율이 낮은 시간대)에 컨텐츠를 전달하고 자유로운 시간대에 서비스 사용을 가능하게 하며, 또한 멀티캐스트 기능을 활용함으로써 서버 및 통신망의 부담을 격감시키는 효과를 가진다. 이 논문에서는, 댁내 저장장치를 활용한 IMPRESS-AMS라 명명한 Anytime 멀티미디어 서비스의 설계 및 구현 방법을 제안하였다.