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        검색결과 172

        101.
        2011.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        이 연구는 농축산물생산비 조사의 통계품질을 진단하는 작업이다. 이러한 진단의 목적을 달성하기 위 하여, 본 연구는 통계청의 품질 진단 지침에 의거하여 다양한 형태의 정량적․정성적 진단을 시도하였다. 본 연구에서는 공식적인 국가 통계에서의 통계품질 개념인 통계의 정확성, 관련성, 시의성, 접근성, 비 교성 등의 측면에 대한 정성적 분석 및 조사, 전문 이용자 심층면접 분석(FGI) 결과를 제시하였다. 이용 자 만족도 조사를 통한 포트폴리오 분석 결과, 중요도는 높지만 만족도는 상대적으로 낮은 1차 개선 영 역에 해당되는 항목은 ‘지출비용에 대한 만족도’, ‘충분한 설명자료 제공’ 등으로 분석되었다. 분석결과를 종합했을 때, 통계 작성기관과의 협의를 거친 주요 개선점은 다음과 같다. 첫째 이용자의 편의 제고를 위한 개선 사항으로 통계 용어 분류의 개선을 꼽을 수 있다. 통계 이용자 편의를 위해 통계의 세부 항목 을 재분류해야 한다는 전문가의 의견이 있으나, 이는 조사기관인 통계청에만 국한되는 문제가 아니므로, 유관 기관과의 적극적인 협의 하에 전문적이면서도 보다 보편적인 용어가 정의될 수 있도록 개선할 필요 가 있는 것으로 진단되었다. 둘째, 이용자의 편의를 제고하기 위해 KOSIS가 지속적으로 업그레이드되어 야 할 필요가 있는 것으로 진단되었다.
        4,200원
        102.
        2011.06 구독 인증기관 무료, 개인회원 유료
        4,000원
        104.
        2010.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In order to improve the breaking strength and elongation of Polybutylene succinate (PBS) monofilament, the monofilament was produced by blending PBS and Polybutlyne adipate-co-terephthalate (PBAT). The PBS/PBAT blend monofilament was prepared by the melt spinning system, and the weight ratios of the compositions of PBS/PBAT was 100/0, 95/5, 90/10 and 85/15, respectively. The breaking strength, elongation, softness and crystallization of PBS/PBAT blend monofilament were analyzed by using a tensionmeter, softness measurement, X-ray diffractometer in the both dry and wet conditions. The PBS/PBAT blend monofilaments were spun in the take-up velocity of 1.19m/sec under the drawing ratio of 6.8:1 condition. The production volumes of PBS/PBAT blend monofilaments showed 20% less than that of Nylon. The breaking strength of PBS/PBAT blend monofilaments were decreased as PBAT contents increased, while elongation and softness were increased. In case of PBAT content were over 5%, the breaking strength, elongation and softness of PBS/PBAT blend monofilaments were not shown to increase in spite of increasing in PBAT contents. Based on these results, it was possible to make the monofilaments with the maximized physical properties when the PBAT contents at 5%.
        4,000원
        105.
        2010.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Recently, Fishermen have required to expand the circumference of trap entrance for conger eel because it was difficult to take the catch out as well as to put the baits into. A series of fishing experiments was carried out in coastal areas of Tongyoung, Korea in 2008 and 2009 using the traps to describe the effect of the entrance size on the catch. The experimental traps (five types) were used in filed experiments with four types circumference size traps (140, 180, 220 and 260mm) with mesh size 22mm and another type was used the same one usually using in filed with mesh size 35mm (750mm circumference). The experiment results were, the conger eels of total length 35mm more or so were caught 85, 93, 142 and 176 individual by the experiment traps with mesh size 22mm as increase circumference size from 140mm to 260mm, respectively. And the small conger eels of the total length below 35mm to be prohibited to catch by law were caught 145, 160, 288 and 304 individual according to increase the circumference size of trap, respectively. In addition, in case of the trap with mesh size 22mm, bycatches were 230 - 260 individuals and much more than bycatches of the trap with mesh size 35mm. In conclusion, when we expand the circumference size of trap according to fishermen's requirement, we should review not only economic of fishery but also increasement the bycatch of non-target fishes and small size fishes.
        4,000원
        106.
        2010.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Polyvinyl acetate (PVAc) prepared by emulsion polymerization has broad applications for additive such as paint binder, adhesive for wood and paper due to its low glass transition temperature which help to plasticize substrate resins. Since emulsion polymerization has a disadvantage that surfactant and ionic initiator degrade properties of the product polymer, poly (vinyl acetate-eo-ethyl acrylate) (VAc-EA) was synthesized using potassium persulfate as catalyst and polyvinylalcohol (PVA) as protective colloid to prevent the degradation. The copolymer latex product was internally plasticized and has enhanced adhesion, water resistance during VAc-EA emulsion polymerization. No coagulation and complete conversion occur with the reactant mixture of 10 mmol/L potassium persulfate, 10 mmol/L poly ( vinyl alcohol) (PVA 17). As the concentrations of PVA increase, the viscosity becomes increase.
        4,000원
        107.
        2010.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In order to design the optimal escape vent for the coon strip shrimp pot, the tank experiments were conducted with the model pot of five different slit height and slit width, respectively. The optimal height and width of escape vent were determined to 20mm and 40mm by tank experiments, respectively. These were determined by the 50% selection carapace length which was denoted to 25mm in selectivity curve. The escape experiments were conducted to determine a number of escape vent with the original shrimp pot to be set the designed escape vent from 2 vents to 10 vents increasing at intervals of 2 vents in tank. The optimal number of escape vents denoted 8 vents. Therefore, to apply the escape vent in commercial shrimp pot will be efficient to reduce small size shrimps to catch.
        4,200원
        109.
        2010.04 KCI 등재 구독 인증기관·개인회원 무료
        시효제도는 제도 자체적으로 여러 가지 논쟁거리를 지니고 있다. 그러나 취득시효제도는 우리나라의 역사적 특성과 관련하여 그 필요성이 부각되어 왔으며, 특히 해방과 6·25 등을 거치면서 소유자의 행방불명, 등기부의 멸실 등으로 등기와 현실의 점유상태가 불일치하는 현상이 빈번히 발생하여 그 필요성이 유지되어 오고 있다.그동안 우리 대법원은 취득시효와 관련한 방대한 판결례가 집적되어 취득시효와 관련된 다섯 가지 원칙을 다음과 같이 정립하기에 이르렀다. 첫째, 점유취득시효가 완성된 자는 등기 없이 원소유자에게 시효취득을 주장할 수 있다. 둘째, 점유취득시효의 진행 중에 등기부상의 소유자가 변경되고 그 후 시효가 완성되면 새로운 소유자에게 등기 없이 시효취득을 주장할 수 있다.(등기명의의 변경으로 점유상태가 파괴되었다고 볼 수 없다) 셋째, 점유취득시효가 완성 된 후 그 등기 전에 제3자가 소유권 이전등기를 마쳤다면 점유자는 제3자에 대하여 취득시효의 완성을 주장할 수 없다. 넷째, 세 번째 원칙에서 시효기간의 기산점을 실제보다 뒤로 정하여 소유권 이전등기 후에 취득시효가 완성하는 것으로 주장할 수 없다. 다섯째, 세 번째 원칙에서 소유자가 변동된 시점을 새로운 기산점으로 다시 취득시효기간이 완성되는 경우에는 점유자는 소유자에 대하여 취득시효의 완성을 주장할 수 있다. 다만, 그 점유기간 중에 등기명의가 동일하고 소유자의 변동이 없어야 한다. 그러나, 위의 다섯 가지 원칙 중 두 번째 원칙과 다섯 번째 원칙의 단서내용이 서로 불일치하여, 1차 점유취득시효와 2차 점유취득시효를 서로 다르게 보고 있었다.대상판결은 기존의 판례가 정립해 놓은 다섯 가지 원칙을 따르면서도, 그 중 다섯 번째 원칙의 단서조항이 변경되어야 한다고 판결하고 있다. 즉, 1차 점유취득시효에서 요구하고 있지 않은 단서조항이 2차 점유취득시효에서는 요구될 근거가 없다는 것이다. 본 연구에서는 대상판결의 1차 점유취득시효와 2차 점유취득시효를 달리 볼 이유가 없다는 판결의 타당성을 찾기 위해 2차점유취득시효의 요건에 대해 알아보도록 한다.
        110.
        2009.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Titanium dioxide particles are used as cosmetics, pigments, photocatalysts, adsorbents, catalytic supports, and sensors. The TiO2 particles were prepared by the precipitation in TTIP/Solvent mixtures and calcined at different temperatures. The resulting materials were characterized by XRD and SEM testing techniques. The TiO2 particles phase composition was determined by XRD ranging from amorphous to crystalline anatase and rutile largely proportional to the calcination temperature.
        4,000원
        111.
        2009.11 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        Electrochemical deposition characteristics of CdSe nanorods were investigated for hybrid solar cell applications. CdSe nanorods were fabricated by electrochemical method in CdSO4 and H2SeO3 dissolved aqueous solution using an anodic aluminum oxide (AAO) template. Uniformity of CdSe nanorods was dependent on the diameter and the height of holes in AAO. The current density, current mode, bath composition and temperature were controlled to obtain a 1:1 atomic composition of CdSe. CdSe nanorods deposited by direct-current method showed better uniformity compared to those deposited by purse-current and/or purse-reverse current methods due to the bottom-up filling characteristics. H2SeO3 concentration showed more significant effects on pH of solution and stoichiometry of deposits compared to that of CdSO4. A 1:1 stoichiometry of uniform CdSe nanorods was obtained from 0.25M CdSO4-5 mM H2SeO3 electrolytes with a direct current of 10 mA/cm2 at room temperature. X-ray diffraction and electron diffraction pattern investigations demonstrate that CdSe nanorods are a uniform cubic CdSe crystal.
        4,000원
        114.
        2008.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        To prepare a solution type acrylic pressure-sensitive adhesive, quarter polymers were synthesized from butyl acrylate(BA), 2-ethylhexylacrylate(2-EHA) as a base monomer, methyl methacrylate(MMA) as a comonomer, each of methacrylic acid(MAA), acrylic acid(AA) as a functional monomer. Acrylic solution type pressure-sensitive adhesives(PSA's) of isocyanate derivative crosslinking PSA's were prepared by crosslinking of BEMM, BEMA with toluene-2,4-diisocyanate. The structure of adhesive was identified by FT-IR. The viscosity was measured by using Brookfield DV-III and molecular weight was measured by using gel permeation chromatography. The physical properties of polyethylene film coated with BEMMT, BEMAT were measured as a function of the concentration. As the result, BEMMT(0.6, 0.8), BEMAT(0.6) showed peel adhesion of 160~180 gf/25 mm width and shear adhesion of more than 24 hours, and tackiness of 4/32~6/32 which was relevant to commercial usage.
        4,000원
        116.
        2008.11 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this study, the effect of slope length and angle at the entrance to fishing pots on the size of captured shrimp was examined to determine the optimal design of pots for use in Hokkaido, Japan. The purpose of the current study was to optimize the design of shrimp pots to allow greater control over the size of captured individuals for the purposes of shrimp resource management. Tank experiments were conducted to determine the optimal slope length and slope angle by analyzing the sizes of shrimp entering 10 model pots with combinations of five different slope lengths on slope angle of current shrimp pot, and five different angles on slope length of current shrimp pot. The results showed that, as the slope length of the pot increased, the size of individuals which entered the pot increased. In addition, as the slope angle was elevated in each of the five different slope angle treatments, the size of individuals entering was also increased.
        4,000원
        118.
        2008.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The need for total enterprise management that covers from accepting orders, design, cost, procurement, manufacture, and delivery has been recently raised in order for efficient project management of small and medium size plant construction enterprises. This trend is reflected in the introduction of EPM(Enterprise Project Management) solutions by some shipbuilding enterprises and large construction corporations. In step with the trend, small and medium size plant construction enterprises are enabled to provide knowledge base in terms of reducing cost and production period and managing portfolio for accepting orders and attaining contract by inducing customized EPM This study presents a design of customized EPM based on a case study of a company. It exhibits a collaborative/collaboration resource-supply model which can be universally applied to small and medium size job-order production enterprises. The research discusses that under the assumption that information is shared internally between departments on planning, supply, manufacture, and quality control in order to create collaborative environment and close participation is created externally between suppliers and orderers, productivity can be improved in cost reduction through planning efficient collaborative supply model.
        4,000원
        120.
        2008.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study demonstrated the effects of extracts from the mushroom Keumsa sangwhang(Phellinus linteus) (KPLE) on fasting glucose and cholesterol levels in human blood. In this double-blind, placebo-controlled human intervention study, healthy volunteers were randomized to receive 3.3 g of KPLE (n=31) or placebo (n=31) per day by oral administration for 8 weeks. The cholesterol and fasting serum glucose levels were evaluated before and after treatment. The fasting serum glucose level was significantly decreased by KPLE administration (p<0.01), but the total cholesterol, triglyceride, HDLcholesterol and LDL-cholesterol concentrations did not change. This study suggests a possibility that KPLE may be useful as a functional food for the prevention of diabetes mellitus.
        4,000원
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