• Title/Summary/Keyword: Chain safety

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A Study on Low-Overhead Collision Warning Scheme using Vehicle-to-Vehicle Communications (차량 간 통신을 이용한 저비용 사고 위험 방지 기술에 관한 연구)

  • Lee, Ji-Hoon;Kim, Dae-Youb
    • Journal of Korea Multimedia Society
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    • v.15 no.10
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    • pp.1221-1227
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    • 2012
  • It is expected that the vehicle safety systems using vehicle-to-vehicle communication can reduce the possibility of vehicle collision and prevent the chain crash by promptly delivering the status of neighboring vehicles. Many IEEE 802.11 DCF based Flooding schemes have been proposed, but they may generally expose the problems that the transmission efficiency is sharply declined as the vehicle density has increased and then is related to the low possibility of the channel access. Therefore, this paper proposes a collision prevention scheme using adaptively controlling the frequency of the message exchanges based on the current status of neighboring vehicles. Moreover, it is shown from simulation that the proposed scheme provides the performance gains over the existing Flooding based scheme.

Value-Sharing in Purchasing and Supply Chain: Microfoundations for CSV (공급 네트워크에서의 공유가치 창출(CSV))

  • Kim, Gyeong Mook
    • Knowledge Management Research
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    • v.15 no.3
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    • pp.189-208
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    • 2014
  • In spite of its popularity among practitioner and academic audiences, few existing studies go into any detail in examining the mechanisms of creating shared value (CSV), especially as applicable to the context of everyday operations. Nor do they provide recommendations to practitioners with regard to facilitating CSV concept. In response to this problem, I introduce benefit-sharing practice which I argue provides a solid route to the concept of CSV. Based on observations from the case study, 10 networks' benefit-sharing practices are analyzed and its featured characteristics are extracted accordingly. Findings demonstrate that such benefit-sharing models as 'Green-Development', 'Protection of the Environment', and 'Accreditation for Food Safety Management' can solve critical societal challenges while simultaneously driving greater profitability for both buyers and suppliers. The findings also suggest that benefit-sharing is a good vehicle of the realization of the CSV concept. I conclude by assessing how the findings add to the existing debate around collaborative supply-relationship and shared value. I suggest that benefit-sharing can contribute positively to the feasibility of CSV concept and, thereby, counter the assertion that CSV is the only immature-concept that lacks clear criteria of demarcation and cases for businesses to follow.

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Diagnosis of porcine reproductive and respiratory syndrome (PRRS) and its serological survey using the reverse transcription and polymerase chain reaction (RT-PCR) and ELISA (RT-PCR과 ELISA를 이용한 PRRS 진단 및 항체가 조사)

  • Chu Keum-Suk;Han Keu-Sam;Han Jae-Cheol;Song Hee-Jong
    • Korean Journal of Veterinary Service
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    • v.27 no.3
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    • pp.273-280
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    • 2004
  • The studies were performed for the PRRS antigen and antibody detection from breeding farms, artificial insemination(AI) center and growing farms in Jeonbuk province. 1. Specific PRRS primers were successfully amplified ORF6 617bp and ORF7 448 bp on agarose gel. 2. RT-PCR method has been establish by commercial kit and the thermal cycler program consisted of 30 cycles: $95^{\circ}C$ for 30 sec, $45^{\circ}C$ for 30 sec, and $72^{\circ}C$ for 45 sec. 3. The results of PRRS antibody test by ELISA method in AI centers were $6.6\%,\;53.3\%$ and breeding farms $65\%,\;65\%\;and\;38.7\%$, respectively. The serological positive of the antibody in gilt higher than sow. 4. The sero-positive of the PRRS antibody showed average $21\%$ in domestic farms, $56.2\%$ in breeding farms, and $29.9\%$ in AI center.

Gemcitabine in Treating Patients with Refractory or Relapsed Multiple Myeloma

  • Zheng, Hua;Yang, Fan
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.21
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    • pp.9291-9293
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    • 2014
  • Background: Patients with refractory or relapsed multiple myeloma are considered to have a very poor prognosis, and new regimens are needed to improve the outcome. Gemcitabine, a nucleoside antimetabolite, is an analog of deoxycytidine which mainly inhibits DNA synthesis through interfering with DNA chain elongation and depleting deoxynucleotide stores, resulting in gemcitabine-induced cell death. Here we performed a systemic analysis to evaluate gemcitabine based chemotherapy as salvage treatment for patients with refractory and relapsed multiple myeloma. Methods: Clinical studies evaluating the impact of gemcitabine based regimens on response and safety for patients with refractory and relapsed multiple myeloma were identified by using a predefined search strategy. Pooled response rate (RR) of treatment were calculated. Results: In gemcitabine based regimens, 3 clinical studies which including 57 patients with refractory and relapsed multiple myeloma were considered eligible for inclusion. Systemic analysis suggested that, in all patients, pooled RR was 15.7% (9/57) in gemcitabine based regimens. Major adverse effects were hematologic toxicity, including grade 3 or 4 anemia, leucopenia and thrombocytopenia i. No treatment related death occurred with gemcitabine based treatment. Conclusion: This systemic analysis suggests that gemcitabine based regimens are associated with mild activity with good tolerability in treating patients with refractory or relapsed multiple myeloma.

Suggesting Strategic Countermeasures to the Change of Customs Administration in Korea and Japan (한일 세관행정 변화와 전략적 대응방안)

  • La, Kong-Woo;Kang, Jin-Wook;Kim, Hyoung-Cheol
    • International Commerce and Information Review
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    • v.14 no.1
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    • pp.273-299
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    • 2012
  • Japan's customs ensure the safety of international trade and trade facilitation has been pursuing. To do this, AEO was introduced to this system and expanding the supply chain currently maintain security and improve customer convenience is necessary to continue to be pursued. In addition, the imposition of customs duties in accordance with changes in the environment to Tariff offenders and increased the amount of tax evasion, smuggling of narcotics, including amphetamines and response, the increase in access is required. In this paper, Japan's tariff and customs administration for the change in the future for Japan-related materials around the Treasury Department's analysis will attempt to draw implications for this.

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Gemcitabine for the Treatment of Patients with Osteosarcoma

  • Wei, Mei-Yang;Zhuang, Yan-Feng;Wang, Wan-Ming
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.17
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    • pp.7159-7162
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    • 2014
  • Background: Patients with recurrent or refractory osteosarcoma are considered to have a very poor prognosis, and new regimens are needed to improve the prognosis in this setting. Gemcitabine, a nucleoside antimetabolite, is an analog of deoxycytidine which mainly inhibits DNA synthesis through interfering with DNA chain elongation and depleting deoxynucleotide stores, resulting in gemcitabine-induced cell death. Here we performed a systemic analysis to evaluate gemcitabine based chemotherapy as salvage treatment for patients with recurrent or refractory osteosarcoma. Methods: Clinical studies evaluating the impact of gemcitabine based regimens on response and safety for patients with osteosarcoma were identified by using a predefined search strategy. Pooled response rates (RRs) of treatment were calculated. Results: In gemcitabine based regimens, 4 clinical studies which included 66 patients with recurrent or refractory osteosarcoma were considered eligible for inclusion. Systemic analysis suggested that, in all patients, pooled RR was 12.1% (8/66) in gemcitabine based regimens. Major adverse effects were hematologic toxicity, including grade 3 or 4 anemia, leucopenia and thrombocytopenia in gemcitabine based treatment. No treatment related death occurred in gemcitabine based treatment. Conclusion: This systemic analysis suggests that gemcitabine based regimens are associated with mild activity with good tolerability in treating patients with recurrent or refractory osteosarcoma.

Rapid Detection Methods for Food-Borne Pathogens in Milk and Dairy Products using an Optical Biosensor (광바이오센서를 이용한 우유 및 유제품의 식중독균 신속검출법)

  • Choi, Eun-Young;Chang, Jin Hee;Hong, Sung Wook;Kim, So-Young;Bae, Hyo Ju;Park, Beom Young;Oh, Mi-Hwa
    • Journal of Dairy Science and Biotechnology
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    • v.31 no.2
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    • pp.165-170
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    • 2013
  • Milk and dairy products are not only excellent foods for humans, providing plentiful varied nutrients, but are also a good medium for detrimental food-borne pathogens. Although the food safety field has stabilized due to standardization of food processing, such as the hazard analysis critical control point (HACCP), outbreaks and cases caused by food-borne pathogens still occur at high rates. In approximately 30% of cases, the disease-causing pathogenic organism is undetermined. Recently, a biosensor was developed that has a simple and fast response and overcomes the problems of conventional methods such as cultivation, immuno-assay, polymerase chain reaction, and microarray. Due to the high selectivity and sensitivity of optical biosensors, it is a suitable method for the immediate detection of food-borne pathogens in milk and dairy products.

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Displacement Properties of Nano Structure Dendrimer

  • Song Jin-Won;Lee Kyung-Sup;Lee Woo-Ki;Choi Young-Il;Yoon Suk-Am;Choi Chung-Seog
    • KIEE International Transactions on Electrophysics and Applications
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    • v.5C no.1
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    • pp.28-32
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    • 2005
  • In the Langmuir-Blodgett (LB) technique, a monolayer on the water surface is transferred onto a substrate, which is raised and dipped through the surface. From this, multilayers can be obtained in which constituent molecules are periodically arranged. The LB technique has attracted considerable interest in the fabrication of electrical and electronic devices. Many researchers have investigated the electrical properties of monolayer and multiplayer films. Dendrimers represent a new class of synthetic macromolecules characterized by a regularly branched treelike structure. Multiple branching yields a large number of chain ends that distinguish dendrimers from conventional star-like polymers and microgels. The azobenzene dendrimer is one of the dendritic macromolecules that include the azo-group exhibiting a photochromic character. Due to the presence of the charge transfer element of the azo-group and its rod-shaped structure, these compounds are expected to have potential interest in electronics and ptoelectronics, especially in nonlinear optics. In the present paper, we give pressure stimulation to organic thin films and detect the induced displacement current.

Mechanical Properties and Synthesis of Polyurethane Dispersion by Glycerol for Vegetable Leather Surface Coatings (Vegetable Leather 표면코팅에 대한 Glycerol을 이용한 수분산 폴리우레탄의 합성 및 기계적 특성)

  • Lee, Joo-Youb
    • Journal of the Korean Applied Science and Technology
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    • v.32 no.1
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    • pp.100-107
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    • 2015
  • Prepared polyurethane resin for vegetable leather coating on surface was synthesized with glycerol which had different mole ratio. Mechanical properties of the synthesized polyurethane resin were measured by the SEM, FT-IR, UTM. Growing concerns in the evnironment-friendly polymer resin, we have synthesized low late obtained solvent water dispersion resin to be coating on vegetable leather. The increase of aliphatic trihydric alcohol glycerol mole %, abrasion resistance and tensile strength had highly stronger in intensity and longer durability. On the contrary, demonstrated reduce properties of elongation and flexibility. In the result of toluene solvent resistance, there was no effect of increased or decreased by the ratio of glycerol mole %.

Chemical Structural Approach to Understand Global Prohibition on Perfluorinated Compounds and their Uses (과불화합물의 규제 및 산업적 용도에 대한 화학구조적 고찰)

  • Choe, Eun Kyung;Ra, Jinsung;Cho, Young Dal;Song, Ki Bong;Lee, Suyeong;Seok, Gwangseol
    • Textile Coloration and Finishing
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    • v.28 no.3
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    • pp.134-155
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    • 2016
  • Perfluorinated chemicals are highly diverse and widely used. More than 160 substances are pre-registered under REACH and approximately 140 substances are in the existing chemicals list of Korea from this chemical group. Chemical structures of PFCs that are globally prohibited and still in uses are identified with OECD's classification of PFCs with an overall review on their uses in consumer products including textile products. Case examples for current domestic situation on use of PFCs as a major component of water-repelling agents in textile products as well as a brief summary of eight major PFC manufacturers' situation are presented from our survey study along the supply chains and the most recent report of EPA stewardship programme, respectively.