• 원예과학기술지
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• 제30권4호
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• pp.471-475
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• 2012

예산국화시험장에서는 노란색 포트멈 'Peace Yellow'를 교배친으로, 분홍색 포트멈 'Lompoc'을 화분친으로 2003년 인공교배한 조합에서 획득한 실생집단으로부터 다화성이며 주년생산성인 분홍색 포트멈 'Peace Angel'을 육성하였다. 2005년부터 2007년까지 주년생산성, 흰녹병 저항성, 분화수명 등 품종의 재배특성을 정밀 검정하여 2007년 최종 선발하였다. 이 품종은 10월 중순에 자연 개화하는 추국으로 차광과 전조시설을 이용한 주년생산이 가능하며 저온에서도 개화가 균일하다. 아네모네화형으로 설상화는 분홍색이고 화심부분인 통상화는 황녹색이다. 꽃의 직경은 5.6cm이며 착화수는 본당 23.0개 정도이다. 단일처리 후 개화소요 주수가 7주 정도이며 분화수명은 22.4일로 긴 편이다.

• 한국통신학회논문지
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• 제38C권1호
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• pp.118-130
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• 2013

고속 모바일 네트워크 및 고성능 모바일 디바이스 기반의 새로운 컨텐츠 서비스 제공환경의 도래로, 사용자들은 실생활공간에서 개인화된 정보를 좀 더 효율적으로 제공해 주는 서비스, 즉 엠비언트 서비스를 요구하고 있다. 이와 같은 지속가능한 형태의 엠비언트 서비스를 구현하여 제공하기 위해서는 보편타당한 서비스 구현 및 제공모델에 대한 연구가 필요하다. 본 논문은 실생활 공간에서 사용자에게 효과적으로 엠비언트 서비스를 제공하기 위하여 실생활 공간을 개인화하는 모델을 제안한다. 제안된 개인화 모델은 Public Info-space, Universal Info-space, Private Info-space의 3계층으로 구성되어있으며, 각 정보공간을 현재의 활용 가능한 기술로 구축하는 방법론에 대해서 논의한다. 제안 모델의 구현 가능성을 확보하기 위해 Wireless Mesh Network와 RTLS로 구성된 테스트베드 인프라를 대학 캠퍼스 내에 구축하고 그것을 활용한 엠비언트 서비스 구현 사례로써 길거리 게임에 대해서 설명한다.

• 한국환경농학회지
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• 제38권2호
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• pp.89-95
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• 2019

BACKGROUND: Liquid pig manure (LPM) has been used as an alternative for conventional fertilizers on some gramineous crops. However, its chemical properties varied widely depending on the degree of the digestion. A pot experiment was conducted to determine the responses of persimmon trees to immature (not well-digested) LPM application. METHODS AND RESULTS: Ten application levels of immature LPM, consisted of a total of 3 to 30 L in 3-L increment, were applied during summer to 5-year-old 'Fuyu' trees grown in 50-L pots. Increasing the LPM application rate caused defoliation, wilting, and chlorosis in leaves. When applied with the rate of 3 L during summer, the tree produced small fruits with low soluble solids and bore few flower buds the following season, indicating insufficient nutritional status. In trees applied with the LPM rates of 6~12 L, both fruit characteristics and above-ground growth of the trees appeared normal but some roots were injured. However, application of higher LPM rates than 27 L resulted in small size, poor coloration, or flesh softening of the fruits the current season. Furthermore, the high LPM rates caused severe cold injury in shoots during winter and weak shoot growth the following season. It was noted that the application of higher LPM rate than 9 L damaged the root, even though above-ground parts of the tree appeared to grow normally. CONCLUSION: The results indicated that an excessive immature LPM application could cause various injuries on leaves, fruits, and the roots in both the current and the following season.

• 한국컴퓨터정보학회논문지
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• 제27권4호
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• pp.61-77
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• 2022

본 연구는 비대면 진료의 개념과 제도적 도입과정에 대해 살펴보고 비대면 진료를 긍정적으로 인지하는 기대 편익 변인과 부정적으로 인지하는 위험 변인들이 이용의도에 어떠한 영향을 미치는지를 PLS-SEM을 사용하여 각 잠재변수의 영향력을 실증적으로 검증하였고 연구 결과는 다음과 같이 요약될 수 있다. 첫째, 의료서비스의 질은 비대면 진료의 인지된 유용성과 인지된 용이성에 유의한 영향을 미치는 것으로 나타났다. 둘째, 접근성은 비대면 진료의 인지된 용이성과 비용 절감에 유의한 영향을 미치는 것으로 나타났다. 셋째, 비대면 진료의 기대 편익들은 이용의도에 유의한 영향을 미치는 것으로 나타났다. 넷째, 기능적 위험과 서비스 위험은 의료진 위험에 유의한 영향을 미치고 의료진 위험은 비대면 진료의 이용의도에 부(-)의 영향을 미치는 것으로 나타났다. 본 연구는 비대면 진료의 이용의도에 영향을 미치는 긍정적 요인과 부정적 요인을 고려하여 이용 의도에 미치는 영향을 도출하여 의료소비자들의 행태를 실증적으로 규명하였다는 점에서 그 의의를 찾을 수 있다.

• 농촌지도와개발
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• 제2권2호
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• pp.163-173
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• 1995

Agricultural extension services in Korea has experienced various system changes and accomplishments. The biggest achievement of extension was rice self-suffiency in the 1970s and abundant vegetable and animal production in the 1980s. The emerging challenges of international competition and localization are contributing to significant changes such as the decentralization of activities and shared responsibilities between the central government and local governments. Change, while it threatens the status quo, is a challenge and an opportunity to review and revamp ensconced and often rigid structures. In this sense, it is time to start a new era in agricultural extension. The development of agricultural extension requires keen appraisals and cogent analysis based on the realities of each specific regional situation. In order to develop agricultural extension services, the various aspects, the synthetic identification of its environments, the clarification of the client, the program development, and the effective mechanisms between research and extension must be considered. Especially, agricultural extension systems should be flexible and adjust to changing environments and the farmers' needs.

• 로봇학회논문지
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• 제3권4호
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• pp.278-286
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• 2008

Reliable functionalities for autonomous navigation and object recognition/handling are key technologies to service robots for executing useful services in human environments. A considerable amount of research has been conducted to make the service robot perform these operations with its own sensors, actuators and a knowledge database. With all heavy sensors, actuators and a database, the robot could have performed the given tasks in a limited environment or showed the limited capabilities in a natural environment. With the new paradigms on robot technologies, we attempted to apply smart environments technologies-such as RFID, sensor network and wireless network- to robot functionalities for executing reliable services. In this paper, we introduce concepts of proposed smart environments based robot navigation and object recognition/handling method and present results on robot services. Even though our methods are different from existing robot technologies, successful implementation result on real applications shows the effectiveness of our approaches.

• 디지털산업정보학회논문지
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• 제5권2호
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• pp.13-20
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• 2009

The most of navigation services these days, are designed in order to just provide a shortest path from current position to destination for a user. Several navigation services provides not only the path but some fragmentary information about its point, but, the data tends to be highly restricted because it's quality and quantity totally depends on service provider's providing policy. In this paper, we describe the folksonomy POI(Point of interest) recommender system using mashup in order to provide the information that is more useful to the user. The POI recommender system mashes-up the user's folksonomy data that stacked by user with using external folksonomy service(like Flickr) with others' in order to provide more useful information for the user. POI recommender system recommends others' tag data that is evaluated with the user folksonomy similarity. Using folksonomy mahup makes the services can provide more information that is applied the users' karma. By this, we show how to deal with the data's restrictions of quality and quantity.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.659-662
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• 2005

Recently, the need for LBS (Location Based Services) is increasing with the rapid growth of the location measurement units, mobile devices, and communication technologies. Especially, wireless carriers are concentrating on LBS since it is regarded as so-called 'killer application' among wireless data services. Although LBS give us convenience and useful information, its use also raises privacy issues. There are quite possibilities that the people's locations are tracked by location measurement units while people do not recognize the existence of the units. To protect a person's location information, lawful and technical aspects should be considered. In this paper, we explain issues, regulations, standards, and platforms related to the protection of the location information. Finally, we suggest the architecture of a platform complying with the regulations and standards. It considers various issues not covered in other studies.

• 한국항해항만학회지
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• 제35권7호
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• pp.589-596
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• 2011

Terminal market has rapidly crashed and market rates have taken a sharp plunge. The substantial throughput decrease resulted from the world economic downturn has been a finishing blow to the terminal operators in Busan. Every terminal operator is taking cost saving as its first priority and accelerating structural reform and downsizing. Under the desperate situation, the need of effective cost analysis would be highly required to effectively control operation cost and to develop new services to satisfy the different needs of the customers. Furthermore, terminal operators could reduce unnecessary activities and concentrate their resource on the more cost-effective process through the operation cost analysis. In order to suggest a new framework of the cost control of container terminals, this paper seeks to analyze terminal costs based on ABC approach by processing actual data.

• Journal of Communications and Networks
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• 제12권5호
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• pp.475-479
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• 2010

The clipping value, defined as the log-likelihood ratio (LLR) in the case wherein all the list of candidates have the same binary value, is investigated, and an effective method to estimate it is presented for iterative tree search detection. The basic principle behind the method is that the clipping value of a channel bit is equal to the LLR of the maximum probability of correct decision of the bit to the corresponding probability of erroneous decision. In conjunction with multilevel bit mappings, the clipping value can be calculated with the parameters of the number of transmit antennas, $N_t$; number of bits per constellation point, $M_c$; and variance of the channel noise, $\sigma^2$, per real dimension in the Rayleigh fading channel. Analyses and simulations show that the bit error performance of the proposed method is better than that of the conventional fixed-value method.