• 한국환경농학회지
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• 제32권2호
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• pp.102-107
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• 2013

BACKGROUND: Pithy pear fruit are not distinguished externally from sound fruit and thus often cause unexpected economic losses. To find out the cause of pithiness, the pithiness incidence and characteristics of Japanese pear (Pyrus pyrifolia cv. Niitaka) fruit picked from a spot frequently produced pithy fruit in an orchard were compared with those of fruit picked from another spot produced sound fruit every year. And the soil chemical properties of the two spots and mineral contents in fruit, shoots, and leaves of Japanese pear trees cultivated in the two spots were also examined. METHODS AND RESULTS: The pithiness incidence was 0, 8.8, and 11.3% at 7 days before and 0 and 7 days after optimal harvest date, respectively, in the spot frequently produced pithy fruit. Flesh firmness was significantly lower in pithy fruit than in sound fruit, while soluble solids content was slightly higher in pithy fruit than in sound fruit. Unlike other mineral contents, Ca content was significantly lower in pithy fruit than in sound fruit. These results indicate that Ca deficiency in fruit is closely associated with decrease in flesh firmness and thus pithiness development. Ca content in soil of the spot frequently produced pithy fruit was also significantly lower than that in soil of the spot produced sound fruit. However, shoots or leaves did not exhibit significant difference in Ca and/or other mineral contents between the two spots, indicating that Ca deficiency in fruit is dependent on the translocation of Ca within a plant rather than soil Ca status. Although total-N, available $P_2O_5$, K, and Ca contents were significantly lower in soil of the spot frequently produced pithy fruit than in soil of the spot produced sound fruit, Mg and Na contents and pH were not different between the soil conditions. CONCLUSION(S): Fruit maturity and Ca level in fruit are closely related to the incidence of pithiness in 'Niitaka' Japanese pear.

• 유기물자원화
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• 제10권4호
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• pp.112-117
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• 2002

본 연구는 고품질의 퇴비 생산을 목적으로 건조된 제지슬러지와 톱밥을 돈분에 혼합하여 합리적인 퇴비화 조건을 도출하기 위해 실행되었다. 돈분은 톱밥과 건조 제지슬러지보다 비교적 높은 질소함량으로 인한 낮은 C/N율과 과다한 함수율이 특징이다. 그러므로 건조 제지슬러지와 톱밥을 첨가하여 퇴비더미의 C/N율과 수분함량을 조절하였으며, 퇴비화 방식은 교반 정체식을 이용하였다. 퇴비화 초기 혼합된 퇴비더미의 물리적 특성 때문에 작업성이 용이하지 않았으나 곧 회복되었다. 돈분과 톱밥을 혼합한 P-2 처리구(56.6 : 43.4)는 퇴비화 시작 후 5일 이내에 퇴비더미의 온도가 $60^{\circ}C$에 도달했으며, 그 때 P-2의 수분함량은 58%이었다. 모든 처리구의 pH는 퇴비화 진행과정에서 미약하게 감소하였다. 짧은 퇴비화 기간 때문에 T-C와 T-N의 변화는 크지 않았지만, T-C의 감소율은 5~12% 범위였다. 5개의 돈분 처리구에서 합리적인 퇴비화 조건을 고려하면 최적의 수분함량은 57%이었고 팽화제로써 톱밥을사용하는 것이 건조 제지슬러지를 처리하는 것보다 퇴비의 품질면에서 우수하였다.

• 한국산학기술학회논문지
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• 제19권5호
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• pp.207-215
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• 2018

현대 조직에서 환경변화가 빠르고 조직구성원들의 다양성이 높아지면서 개인에게 더 많은 권한과 자율성을 부여하는 임파워링 리더십에 대해 관심이 높아지고 있는데 본 연구에서는 임파워링 리더십의 효과성이 발휘되는 과정을 조직 구성원들의 리더수용을 중심으로 검증해 보았다. 이를 위하여 기업체에 근무하는 재직자들을 대상으로 총 293부의 설문을 수집하여 임파워링 리더십과 개인효과성(개인혁신행동, 개인성과) 간의 관계에 있어 개인의 리더수용의 매개효과를 검증하였다. 본 연구의 가설검증결과 첫째, 임파워링 리더십은 개인혁신행동에 유의한 영향을 미쳤고 둘째, 임파워링 리더십은 개인성과에 유의한 영향을 미쳤다. 셋째, 임파워링 리더십과 개인혁신행동 간의 관계에서 개인의 리더수용은 완전매개를 하는 것으로 나타났고 넷째, 임파워링 리더십과 개인성과 간의 관계에서 개인의 리더수용은 완전매개를 하였다. 본 연구는 임파워링 리더십이 효과성을 발휘하기 위해선 조직 구성원들이 리더를 인정하고 자발적으로 받아들이는 리더수용이 중요하며 임파워링 리더십이 더욱 효과적이기 위해선 조직 구성원 개개인들의 성숙도와 가치관 등을 고려하여 리더가 임파워링 행동을 실시함이 필요하다는 점을 제시하고 있다.

• Asian-Australasian Journal of Animal Sciences
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• 제31권2호
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• pp.189-197
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• 2018

Objective: Hemicastration is a unilateral orchiectomy to remove an injured testis, which can induce hormonal changes and compensatory hypertrophy of the remaining testis, and may influence spermatogenesis. However, the underlying molecular mechanisms are poorly understood. Here, we investigated the impact of hemicastration on remaining testicular function. Methods: Prepubertal mice (age 24 days) were hemicastrated, and their growth was monitored until they reached physical maturity (age 72 days). Subsequently, we determined testis DNA methylation patterns using reduced representation bisulfite sequencing of normal and hemicastrated mice. Moreover, we profiled the testicular gene expression patterns by RNA sequencing (RNA-seq) to examine whether methylation changes affected gene expression in hemicastrated mice. Results: Hemicastration did not significantly affect growth or testosterone (p>0.05) compared with control. The genome-wide DNA methylation pattern of remaining testis suggested that substantial genes harbored differentially methylated regions (1,139) in gene bodies, which were enriched in process of protein binding and cell adhesion. Moreover, RNA-seq results indicated that 46 differentially expressed genes (DEGs) involved in meiotic cell cycle, synaptonemal complex assembly and spermatogenesis were upregulated in the hemicastration group, while 197 DEGs were downregulated, which were related to arachidonic acid metabolism. Integrative analysis revealed that proteasome 26S subunit ATPase 3 interacting protein gene, which encodes a protein crucial for homologous recombination in spermatocytes, exhibited promoter hypomethylation and higher expression level in hemicastrated mice. Conclusion: Global profiling of DNA methylation and gene expression demonstrated that hemicastration-induced compensatory response maintained normal growth and testicular morphological structure in mice.

• 무역상무연구
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• 제46권
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• pp.265-313
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• 2010

Kyoto Protocol is an international convention on concrete performance program for UNFCCC(United Nations Framework Convention on Climate Change), which regulate and prevent to global warming and officially came into effect on February 16, 2005. Kyoto flexible mechanisms, the agreed environmental system in March 1997 in the Third Conference of Parties in UNFCCC General Assembly, Emission Trading System(ETS), Clean Development Mechanism(CDM) and Joint Implementation(JI), are key policies related to environment. In advanced countries, greenhouse gas emissions should be reduced average 5.2% level compared to 1990 in total emissions during 2008-2012. World leading carbon market finished the trial on the EU ETS I greenhouse gas emissions trading system, EU ETS II is operated regularly after 2008. World Bank leads to make 'Prototype Carbon Fund(PCF)' in April 2004, which is the world first carbon fund and a representative public carbon fund type, World Bank operate various funds including present PCF. Thus, I would like to propose as follows in relation to this study: First, in the validity analysis of carbon funds, it would be needed to analyze the Emission Reduction Cost Efficiency(ERCE) of carbon. The ERCE is a break-even value which brings the Net Present Value(NPV) to zero. NPV approach is used among projects and it enables potential projects to be compared and evaluated the ERCE on the basis of the net present value of net future cash flows. Therefore, according to results of analysis, carbon funds should be developed and invested. Second, it would be necessary to allow of issuing bonds together with carbon funds, carbon finance etc. Third, carbon funds, it would be reasonable to have a relatively enough maturity in project and as a financial derivatives in the international financial markets, it is needed various types of transactions. Fourth, it would be needed to standardize the carbon emissions trading for more efficiently. Fifth, it would be necessary to establish and invest in various kinds of domestic and overseas global carbon funds, including governments, privates, governments and privates sectors. And it is also needed to establish the medium and long term plans for carbon funds. Sixth, it would be needed to foster the advanced trade mechanisms for carbon funds in the most effective ways. Finally, carbon funds should be used in harmony with international societies to reduce global warming as the social responsible investing funds and it should be contribute to sustainable development. In addition, it would seem that carbon funds should be studied on establishing the contributable standard of sustainable development in the future assignment.

• International Journal of Contents
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• 제11권1호
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• pp.41-51
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• 2015

Management systems for electronic library have been developed on the basis of Client/Server or ASP framework in domestic market for a long time. Therefore, both service provider and user suffer from their high cost and effort in management, maintenance, and repairing of software as well as hardware. Recently in addition, mobile devices like smartphone and tablet PC are frequently used as terminal devices to access computers through the Internet or other networks, sophisticatedly customized or personalized interface for n-screen service became more important issue these days. In this paper, we propose a new scheme of integrated management system for electronic library based on SaaS and Web Standard. We design and implement the proposed scheme applying Electronic Cabinet Guidelines for Web Standard and Universal Code System. Hosted application management style and software on demand style service models based on SaaS are basically applied to develop the management system. Moreover, a newly improved concept of duplication check algorithm in a hierarchical evaluation process is presented and a personalized interface based on web standard is applied to implement the system. Algorithms of duplication check for journal, volume/number, and paper are hierarchically presented with their logic flows. Total framework of our development obeys the standard feature of Electronic Cabinet Guidelines offered by Korea government so that we can accomplish standard of application software, quality improvement of total software, and reusability extension. Scope of our development includes core services of library automation system such as acquisition, list-up, loan-and-return, and their related services. We focus on interoperation compatibility between elementary sub-systems throughout complex network and structural features. Reanalyzing and standardizing each part of the system under the concept on the cloud of service, we construct an integrated development environment for generating, test, operation, and maintenance. Finally, performance analyses are performed about resource usability of server, memory amount used, and response time of server etc. As a result of measurements fulfilled over 5 times at different test points and using different data, the average response time is about 62.9 seconds for 100 clients, which takes about 0.629 seconds per client on the average. We can expect this result makes it possible to operate the system in real-time level proof. Resource usability and memory occupation are also good and moderate comparing to the conventional systems. As total verification tests, we present a simple proof to obey Electronic Cabinet Guidelines and a record of TTA authentication test for topics about SaaS maturity, performance, and application program features.

• Journal of Nutrition and Health
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• 제31권9호
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• pp.1446-1456
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• 1998

Bones are important parts in sustaining the shape of the body, but they are also metabolic organs which undergo bone remodeling by constant bone resorption and formation. Osteoporosis, the typical metabolic bone disease, is characterized by a reduction in bone mineral density (BMD). Women more than men are at risk fir osteoporosis-related fractures, especially in the lumbar spine, wrist, and hip region. Risk of fracture depends on one's BMD, which open determined by the peak bone mass value achieved at skeletal maturity and followed by subsequent age-and menopause-related bone loss. Genetic and environmental factors are known to play a key role in bone metabolism and diet is considered as one of the important environmental factors. The purpose of the present study was to assess the status of BMD and bone mineral content(BMC) to clarify the relationships between dietary intakes and the risk of osteoporosis in adult women in Taegu. Subjects were 130 healthy females in between 20 and 69 years of age. BMD and BMC of the lumbar spine(venebrae L2-4) of the subjects were measured by dual energy X-ray absorptiometry. The average age of the subjects was 47.4${\pm}$11.7 years old, the average weight was 57.2${\pm}$8.4kg, the average age of menarche was 16.6${\pm}$1.9 years old and the average age of menopause was 48.4${\pm}$5.3 years old. The nutrient intakes of the subjects measured by the convenient method were generally lower than the level of RDA. The result of nutrient intake assessed has shown that the average energy intake was 1701${\pm}$316kca1 which is 85.1% of the RDA and the average calcium intake was 485.4${\pm}$172.3mg which is 69.3% of the RDA. The intakes of protein, vitamin A, vitamin B$_1$, niacin were greater than the RDA, whereas the remaining nutrient intakes were lower than the RDA. The average BMD of the subjects was shown to be 1.06${\pm}$1.09g/$\textrm{cm}^2$. The highest BMD of 1.24${\pm}$0.14g/$\textrm{cm}^2$ was noticed in the subjects of 30s compared to 20s, 40s, 50s, 60s. The BMD values were compared by the relative body weight(R3W) of the menopause subjects, and it was found that the underweight group had significant lower BMB while the rest of the groups did not have any differences in BMD. The most strongly correlated nutrient with BMD among the menopause subjects appeared to be calcium. The women whose Ca intakes were higher than 500mg showed the significantly higher BMD than those with Ca intakes lower than 500mg. This study suggests that the most effective way to prevent osteoporosis and to reduce the incidences of fractures seems to be minimizing bone loss through the adequate intake of calcium as well as avoiding underweight, especially in menopausal women. (Korean J Nutrition 31(9) . 1446-1456, 1998)

• 한국석유지질학회지
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• 제7권1_2
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• pp.35-40
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• 1999

동해 울릉분지에 분포하는 천부 가스의 특성을 파악하기 위해서 분지 남동부 해역에서 채취한 시추 코아 (98EEZ-3)에서 가스를 포집하여 탄화수소 가스의 함량, 성분 및 탄소 동위원소 분석을 실시하였다. 또한 가스의 함량과 시추 코아 퇴적물의 연관성 및 특성을 파악하기 위해서 시추 퇴적물에 대해서 유기 지화학 분석을 실시하였다 시추 코아에서 포집된 천부가스 중 탄화수소 가스의 함량은 755.3 ppm에서 6176.7 ppm을 나타났다. 탄화수소 가스로는 메탄의 함량이 가장 우세해서 $697.9{\~}6054.4 ppm$을 포함하였고 메탄 외의 탄화수소 성분으로는 에탄, 프로판, 부탄, 헥산이 소량 분석되었다. (100 ppm 이하). 퇴적물 분석 결과 총 탄소는 $1.84{\~}5.11{\%}$,유기탄소는 $0.29{\~}2.65{\%}$의 함유량을 나타냈다. 총 유기탄소와 총 질소의 비율은 분석 구간 중 일부를 제외하고는 10 이상으로 육상 기원 유기물의 유입이 우세했음을 시사한다. 포집된 총 탄화수소 가스 중 메탄의 성분비와 탄소 안정 동위원소 비를 고려하면 울릉분지 남동부에 분포하는 천부가스는 열기원 가스가 우세하고 일부는 생물기원 가스와 흔합되어 나타나는 양상을 나타낸다. 시추 퇴적물 중 유기물의 열적 성숙도는 동위원소 결과에 따른 가스의 열성숙 단계 보다 낮게 나타나서 시추구간보다 심부에서 생성된 열기원 가스가 이동하여 현재의 위치에 집적되어 있는 것으로 해석된다.

• 한국언론정보학보
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• 제16권
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• pp.168-206
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• 2001

This study attempts to examine the relationships between the major market-based media and the government after closing military regime era, 1961-1987. After the military regime was collapsed, while the mass media in Korea obtained independence and autonomy from government, they have been confronted with the terrible competition not so much comparatively as before. The watchdog role in the traditional liberalism, which is regarded as normative relationship between the media and the government would be transformed in accordance with the market condition and the maturity of democracy. Thus, the watchdog metaphor has been variously deviated in rower-centered society; lap dog, guard dog, attack dog. liberalists argue that the primary democratic role of the media is to art as a public watchdog overseeing the state. Social democrats, however, criticize them as simplistic conception which could be only applied to the government. They argue that the media should be seen as a source of redress against the abuse of all forms of power over others; the home, the economy, and the civil society. The lap dog view is that the media is overwhelmingly dependent on the established power structure contrary to the watchdog. While the guard dog perspective is a means to preserve the power structure alarming with playing 'conflict role', the attack do8 aims to the private interest of the media in intruding into the politics. The attack dog perspective by T. Patterson could be composed of the interpretive style of report, the game schema report over the policy schema in the election, and the negativism against politics and government. The market-dominant press has been likely to transform from lap-guard dog into attack-guard dog. In Roh Tae Woo government(1988-1992), while the press was a lessened lap-guard dog before three parties merger in 1990, after merger the press had been transformed as the reinforced lap-guard dog because this merger entailed joint, party-to-party negotiations, and the formation of the new party preceded by dissolution of the ruling blot. In the early stage of Kim Young Sam government(1993-1997), the press has kept in pace with the reform movement drive-forced by the government. However, the press withdrew the support of Kim's reform in reaching the level of threat to ruling bloc. The press coalesced only circumstantially with government and was interested in preserving some margin of independence. The failure of Kim's reform proved the political muscle of the press in post-autho-ritarianism. In the middle stage of Kim Dae Jung government (1998-) that resulted in the shift of power structure as once-opposition party leader, the stress has been a manifested attack-guard dog owing to the anti-cold war policy, the realignment policy of power, and the minority-base of Kim's government. The press has endeavored to hold political communication within limits relatively less threatening to the established order.

• 한국조리학회지
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• 제19권2호
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• pp.130-148
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• 2013

국내 피자 시장은 성숙기에 있는 상태로, 시장 내 경쟁이 치열한 상황이다. 이에 쉽게 모방할 수 있는 제품이나 기술보다는 소비자의 감성을 자극하는 브랜드 개성이 기업의 이미지를 차별화 시킬 수 있는 적합한 수단으로 평가받고 있다. 본 연구는 Aaker JL(1997)의 브랜드 개성척도(BPS)를 바탕으로 피자 브랜드의 개성, 소비자-브랜드 관계의 질, 재구매 의도간의 구조적 관계를 파악하고자 하였다. 291개의 표본을 바탕으로 SPSS 16.0과 AMOS 5.0 을 사용하여 연구의 타당성과 이용성을 검토하고 가설을 검증하였다. 최종 모형의 적합도는 ${\chi}^2$=394.809(p<0.001), ${\chi}^2$/df=1.747, RMR=0.087, GFI=0.900, NFI=0.920, CFI=0.964, RMSEA=0.051 등으로 조사되었다. 연구 결과 브랜드 개성 중 진실함 (${\beta}$=0.220), 유능함 (${\beta}$=0.167), 세련됨 (${\beta}$=0.420)이 소비자-브랜드 관계의 질인 친밀함에 각각 정(+)의 영향을 미치는 것으로 나타났다. 진실함 (${\beta}$=0.269), 유능함 (${\beta}$=0.185), 세련됨 (${\beta}$=0.179), 강인함 (${\beta}$=0.114)이 소비자-브랜드 관계의 질인 브랜드 파트너 품질에 정(+)의 영향을 미치는 것으로 밝혀졌다. 또한 소비자-브랜드 관계의 질인 친밀함(${\beta}$=0.515)과 브랜드 파트너 품질(${\beta}$=0.155)은 재구매 의도에 정(+)의(p<0.001) 영향을 주는 것으로 검증하였다. 향후 실무적인 관점에서, 해당 기업은 마케팅에서의 경쟁 우위를 점하기 위해 본 연구의 피자 브랜드 개성에 대한 연구의 결과들을 이용할 수 있다.