• 대한영양사협회학술지
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• 제20권2호
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• pp.123-132
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• 2014

This study investigated the effect of food consumption monitoring and real-time communication-based weight control program using a smartphone on weight reduction and maintenance in obese women. This study consisted of two phases: an 8-week weight control program with food consumption monitoring and real-time communication using a smartphone and an 8-week follow-up. Sixteen obese female college students (>30% body fat) participated in this program, and we measured changes in body composition and dietary intake volume. Follow-up analysis focused on weight maintenance after 8 weeks of no contact. Total energy intake (P<0.01), body weight (P<0.001), percent body fat (P<0.001), body fat (P<0.05), and body mass index (P <0.001) decreased significantly after the 8-week weight control program. However, we could not observe total energy intake or body composition regain after the follow-up period. These results suggest that food consumption monitoring and real-time communication using a smartphone can be effective for weight control and maintenance.

• Journal of Animal Science and Technology
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• 제60권4호
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• pp.7.1-7.5
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• 2018

Background: Mice are widely accepted research models of great clinical significance. Maintenance of laboratory mice breed is an essential aspect for performing research activities in various fields of science. Infanticide is one of the prominent causes of litter loss during maintenance of laboratory mice stock. The present study is an effort to monitor the effect of change in ambient temperature of female mice below the normal range on cannibalism and infanticide during early postparturition phase. Adult female Swiss albino mice have been divided into two groups of control and treatment. On the day of litter group one was maintained under controlled temperature conditions (minimum $20^{\circ}C$ to maximum $23^{\circ}C$) throughout, while female mice belong to group two have been exposed to variation of room temperature (maximum $15^{\circ}C$ to minimum $10^{\circ}C$ for two nights and one day) until 36 h postparturition. Results: The effects of temperature changes were observed on the infanticide behaviour of dams along with the survival of pups in early postparturition phase till 36 h after delivery. The significant statistical difference (P < 0.05) was reported in infanticide behaviour of dams when control and treatment group was compared. It is observed that decrement in surrounding temperature promotes decrement in the ambient body temperature of dams during early postparturition. It is proposed that alteration of hypothalamic homeostasis due to temperature change induces cannibalism and infanticide behaviour. Lack of thermoregulation during early postparturition creates the sense of insecurity, in-satiety, anxiety and stress. Conclusions: Authors strongly recommend the maintenance of body and surrounding temperature to prevent infanticidal behaviour and cannibalism within Swiss albino mice population. Further investigations are advisable to authenticate the active behavioural and biochemical pathway behind the phenomena.

• 화훼연구
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• 제18권1호
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• pp.57-61
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• 2010

칼슘 및 왁스 코팅 포장재 처리가 절화백합과 장미의 절화수명 및 품질에 미치는 효과를 연구하였다. 공시재료는 Lilium Oriental hybrid 'Le Reve'와 Rosa hybrida 'Fire King'를 사용하였으며, 25% 칼슘 및 36% 왁스 코팅 포장재 처리구에 포장 후 $5^{\circ}C$와 $20^{\circ}C$ 저장고에 48시간동안 저장하였다. 절화 백합의 'Le Reve' 경우 36% 왁스 코팅 포장재 처리구에 포장 후 $5^{\circ}C$ 저장시 상품의 수명은 대조구에 비해 2일정도 증가되었다. 그러나 절화 장미 'Fire King'의 경우는 절화의 선도유지나 수명에는 효과가 크게 나타나지 않았다. 그러므로 절화 백합의 경우에는 상품의 수확 후 기능성 포장재가 저장성 및 선도유지에 유용함을 알 수 있었다

• International Journal of Computer Science & Network Security
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• 제21권3호
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• pp.198-205
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• 2021

For twenty years, in the EU there has been a trend of a lack of maritime infrastructure and a redundance of the road one, which has a negative impact on the economy. The intermodal transport market structure in the EU has not changed over the past ten years. The stability of transport systems due to the lack of changes in the transport market remains under threat, affecting supply chains and networks through the optimization of warehousing and transportation costs. The research methodology is based on a quantitative assessment of cause-and-effect relations between economic growth and transport and logistics in the EU. A statistical analysis of security indicators, intermodal and modal transport, international trade in goods within the EU and in the world trade in goods, the dynamics of GDP of the EU countries, the level of openness of the EU economy, investment and maintenance costs of different modes of transport and infrastructure has been carried out. The results show that in 2000- 2010 there were positive changes in the transport and logistics infrastructure of the EU, which had a positive effect on trade, openness of the economy of the EU, GDP growth. However, at that time, negative effects of environmental impact and the load on road and rail transport were accumulating. Investment in different modes of transport is limited, and technical maintenance and infrastructure maintenance costs form a significant part of GDP of the EU. A slowdown in economic growth leads to budget constraints and infrastructure financing gap. As a result, the freight and passenger intermodal and modal transport market structure remains virtually unchanged. The load on rail and road transport remains stable, despite the reduced level of transport hazards. Transport productivity has declined over the past ten years. Herewith, the intensification of trade and the openness of the EU economies require constant modernization and innovative renewal. The EU policy in this direction remains normative, uncontrolled, which is reflected in investment differences within the EU and maintenance costs.

• 한국의류학회지
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• 제47권2호
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• pp.295-310
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• 2023

The current virtual fashion influencers are a hyper-real prototype in that it has a higher presence than the virtual humans in the past. Also, they are leading fashion trend with more than tens of thousands of followers on social media. This study investigated the physical and social presence of virtual fashion influencer perceived by consumer and verified effects on evaluation attributes of influencers and the relationship maintenance behavior. A total of 321 Korean women in their 20s and 30s who have Instagram account participated in the online survey. The data was analyzed using AMOS 23.0. The results revealed that the physical presence had a significant impact on attractiveness of virtual fashion influencers. In case of social presence had a positive effect on friendliness and reliability of virtual fashion influencers. In addition, evaluation attributes of virtual fashion influencers' friendliness, attractiveness and reliability in the order of influence on relationship maintenance behavior. This study suggested that the development of social presence of virtual fashion influencers with friendliness and attractiveness is more important than the physical presence that has already reached a high level.

• 디지털융복합연구
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• 제16권7호
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• pp.97-105
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• 2018

4차 산업혁명은 정보통신 분야에 큰 변화를 가져오고 그로 인해 다양한 일자리가 창출될 것으로 예상된다. 그러나 신기술 등장에 따른 직무 스트레스와 불확실성으로 IT 인력의 심리적 불안감은 증대되고 있다. 연구자는 전문직 정체성이 정보시스템(IS) 운영인력의 직무 스트레스와 정서적 소진을 어떻게 조절하는지 살펴보았다. 실증연구를 위해 정보시스템 관리 및 지원업무를 담당하는 160명을 대상으로 설문을 배포하여 데이터를 수집하였고, SPSS 21을 사용하여 가설을 검증하였다. 분석 결과, 직무 스트레스의 구성요소인 역할갈등, 역할모호, 질적 업무과부하는 정보시스템 운영인력의 정서적 소진에 영향을 미쳤으며, 전문직 정체성은 질적 업무과부하와 정서적 소진의 관계를 조절하고 있었다. 반면, 전문직 정체성은 역할갈등과 정서적 소진, 역할모호와 정서적 소진의 관계를 조절하지 않는 것으로 나타났다. 전문직 정체성이 신기술 도입에 따른 심리적 부담과 정서적 소진을 조절하는 만큼, 조직에서는 개개인의 전문직 정체성을 높이기 위한 지원을 제공해야 할 것이다.

• 한국구조물진단유지관리공학회 논문집
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• 제5권1호
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• pp.195-205
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• 2001

An analytical finite element approach to nonlinear behavior of reinforced concrete shear walls with opening under monotonic loading was presented in this paper. In order to achieve the objectives of present paper, the orthogonal anisotropic models for cracked reinforced concrete element based on smeared crack concept were used as the nonlinear material models of biaxial state of stress. The stiffness of cracked concrete was evaluated through the combined use of tension and compression stiffness models in and parallel directions of crack, respectively and shear transfer effect due to the aggregate interlocking at crack surface. The stress and strain of reinforcement in concrete was evaluated using the average stress and average strain relation with bond effect. based on smeared crack concept. The diagonal reinforcing bar was modeled using truss element with bond effect. A special significance of diagonal reinforcement near opening was given to the shear wall with opening and an effective distribution of diagonal reinforcement was presented in order to give an ultimate strength increment as well as a crack control.

• 교육시설 논문지
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• 제26권6호
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• pp.29-37
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• 2019

The research institute has a function to get the research outcome through the various experiments, data collection and analysis. Therefore, research building is important to keep the research condition or experiment environment. But buildings would be deteriorated and leaded into the deterrence of research. Maintenance is planned to protect the research building condition through various general repair or heavy repair. The heavy repair is generally conducted in massive repair scope or main components preparation. In this paper, it aimed at analyzing the effect of the massive or main components repair with inputted cost and its resulted output. In order to analyze the effect of a massive repair, it used the Benefit/Cost analysis and sensitivity analysis. Results of this study are as follows : The benefit/cost analysis shows that research building whose researcher continuously live and study has good effect. On the contrary, pace of the the experimental function is not good effect in benefit/cost analysis. But the experimental function is indispensible to get the research outcom for the research goal. Therefore, the experimental function will be planned to repair and get the historical repair data because the proper repair time would be prepared to cut down the repair cost.

• 한국건설관리학회논문집
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• 제14권2호
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• pp.3-11
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• 2013

최근 핵가족화, 맞벌이 부부의 증가로 인해 장시간 보육시설에 맡겨지는 영유아의 수가 증가하고 있으며, 보육시설의 중요성이 증대되고 있다. 특히, 외부환경에 민감한 영유아들에게 보육시설의 물리적 환경은 필수적인 관리대상이다. 현재, 국 공립 보육시설은 시설운영 및 유지관리비를 지방자치단체로부터 지원받고 있으나, 불공평한 지원문제를 가지고 있다. 왜냐하면, 시설규모나 유지관리 항목에 따른 시설 개 보수비 산정기준이 부족하고, 보육시설 운영유지를 위해 사용되는 보육시설 세출 예산과목 중 시설비와 시설 장비 유지비가 현실적이지 않기 때문이다. 이러한 이유로 한정된 예산으로 보육시설의 유지보수 항목을 적절하게 배분할 수 있는 방안이 요구된다. 따라서 본 연구에서는 국 공립 보육시설물의 실내외 시설 설비 등 33개의 운영유지항목을 정리하고, 설문조사를 통해 각 운영유지 항목의 중요도를 산정하였다. 이를 통하여, 실무자가 적정한 시설운영유지항목을 바탕으로 한정된 예산으로 보육시설 운영유지를 효율적으로 관리할 수 있도록 지원하고자 하였다.

• 한국도로학회논문집
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• 제8권2호
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• pp.49-54
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• 2006

The purpose of this study was to determine the effect of expansion joint spacing (slab size) on the life cycle costs of owning Portland Cement Concrete (PCC) airfield pavements. Previous research has shown that slab size has a statistically significant impact on pavement performance. A probabilistic life cycle cost analysis was performed to determine if the effect of slab size on pavement performance would affect the total cost of ownership of PCC pavements. Data from 48 Pavement Condition Index (PCI) inspections of military and civilian airfields were used to develop probability-of-distress-by-condition curves, which were then used to develop probabilistic cost-of-repair-by-condition curves. A present worth life cycle cost analysis was then performed for various slab sizes, using construction costs, rehabilitation costs, and maintenance costs. Maintenance costs were determined by assuming a condition deterioration rate appropriate for each slab size and applying the cost-by-condition curves. The probabilistic cost-of-repair-by-condition curves indicated that smaller slabs are more expensive to repair on a unit cost basis. Life cycle cost analysis showed that larger slabs have a higher total cost of ownership than smaller slabs due to a faster rate of deterioration.