• 한국콘텐츠학회논문지
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• 제9권2호
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• pp.88-96
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• 2009

본 논문에서는 U-Health 시스템의 효율성을 높이는 EEF 기법을 제안하고 이를 적용하여 심전도 센서를 이용한 U-Health 시스템 설계에 대하여 기술한다. EEF 기법은 센서노드가 이상 데이터 수집 시에만 베이스 노드로 데이터를 전송하는 기법이다. 이러한 기법은 센서노드의 통신 빈도수를 줄여 전력 소모를 최소화 하고 여러 환자의 데이터를 수집해야 하는 베이스 노드의 처리 부담을 감소시키는 장점을 갖는다. 본 논문에서 제안하는 EEF를 적용한 U-Health 시스템은 심전도 센서와 GPS 센서를 통하여 환자의 심전도 상태 정보와 환자의 위치 정보를 서버로 전송한다. 서버는 환자의 이상 유무를 판단하고 병원의 단말기로 환자의 상태와 위치를 전송하는 구조로 동작하며 시뮬레이션을 통해 EEF 기법의 U-Health 시스템에 대한 적합성을 확인하였다.

• 대한본초학회지
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• 제27권1호
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• pp.51-58
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• 2012

Objectives : This study was performed to investigate effect of evodiae fructus on acute reflux esophigitis rat induced by pylorus and forestomach ligation operation. Methods : Twenty-four laboratory rats were divided four groups and each group had six rats ; normal intact group, acute reflux esophagitis (RE) control group, two experiment RE group treated extract of evodiae fructus 600 mg/kg (EEF600) and 300 mg/kg (EEF300). All rats was fasted for 18 hr but free water, we induced RE by pylorus and forestomach ligation operation. Intact group and RE control group rats were orally administered a distilled water and two experiment groups were orally administed with EEF 600 mg/5ml/kg and 300 mg/5ml/kg. One hour after, rats were anesthetized, intact group was cut the abdomen open and sutured with 2.0 silk thread. RE control group and EEF group were cut the abdomen open, ligated pyloric canal and forestomach with 2.0 silk thread and sutured. Six hour after the operation, rats were sacrified, collected bloods in the abdominal vein, disectted a esophagus and stomach. The stomach was washed a 1 ml PBS and the esophagus was cut longitudinally and pictured a innter mucosa area to research damages in esophagus. Results : The esophagic tissue damage percentage of reflux esophagitis rat was increased compared to that of normal intact group. But esophagic damage percentage of EEF 600 were significantly decreased compared to that of RE control group. But there was no difference on gastric juice pH between control RE, alpha-tocopherol administration rat group and EEF administration rat group. In esophagus of RE control rat, gastric damage occurred severely and injury percentage of mucosa were increased, but EEF 600 mucous inflammatory damage percentage was significantly compared to that of RE control group. Proinflammatory cytokines such as TNF-alpha, IL-1beta and IL-6 in serum on RE control group were markedly grew than those of intact rat, those of vechicle group treated with EEF 600 and EEF 300 were remarkably decreased compared to production of proinflammatory cytokine of RE control group. In microscopic observation, intact group rat had no hyperemia, mucous injury and exclusion, ulcer and edema. But it could showed mucosa damages, submucosa edema and ulcer in RE control. However, administration of EEF 600 and EEF 300 made esophagus have less inflammation and injury by gastric acid. Conclusions : The results suggest that antiinflammatory Effect of EEF could attenuate the severity of reflux esophagitis and prevent the esophageal mucosal damage, and validate its therapeutic use in esophageal reflux disease.

• Asian-Australasian Journal of Animal Sciences
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• 제19권7호
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• pp.953-957
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• 2006

The eukaryotic elongation factor 1 A (EEF1A) participates in protein synthesis by forming the eEF1A GTP tRNA complex to deliver aminoacyl-tRNA to the A site of ribosomes. This study described cDNA sequences and partial genomic structure of porcine EEF1A1. The porcine EEF1A1 gene encoded a protein with 462 amino acids, which shared complete homology with human, chimpanzee and dog. The temporal expression pattern showed the diversity of EEF1A1 level in mRNA was relatively minor in prenatal embryo skeletal muscle, however, the expression decreased during aging after birth in skeletal muscle of the Chinese Tongcheng pig. The spatial expression patterns indicated that the gene expressed in skeletal muscle, heart, lung, liver, kidney, fat and spleen. In addition, we assigned the gene to porcine chromosome 1 using a radiation hybrid panel.

• 한국농공학회논문집
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• 제61권5호
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• pp.33-47
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• 2019

The environmental ecological flow (EEF) of stream or river will be designated according to the enforcement of the Water Environment Preservation Act. Previous researches by Ministry of Environment have proposed agricultural reservoirs as alternative resources to secure river flow where multi-purpose dam does not exist. However, agricultural reservoirs are constructed for the supply of agricultural water, and in fact, there is not a sufficient amount of water to be supplied to rivers as EEF. Therefore, this study examines the economic feasibility of securing EEF through the remodeling or construction of agricultural reservoirs. We investigated water balance of reservoir through simulation of three types of water supply demands such as agricultural water, agricultural water and river maintenance flow, and agricultural water and environmental ecology flow. The economics analysis was conducted on water supply demands and corresponding remodeling or construction of reservoirs. As a result, it was found that the method of securing through heightening existing reservoir enhancement is economically feasible. However, it was not possible to secure all the amount of the EEF due to the size limitation of existing reservoirs or constrain of the watershed for newly built reservoir. Therefore, in order to secure all of the EEF, the utilization of other alternatives as well as agricultural reservoirs should be considered. This study demonstrated the method of economical feasibility study of securing river maintenace flow and EEF using agricultural reservoirs and other considerations.

• 한국환경과학회지
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• 제21권5호
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• pp.545-553
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• 2012

Eco-efficiency considers both environmental impacts and economic values. It is a useful tool for communicating with stakeholders for business decision making. This study evaluated the eco-efficiency factor (EEF) for the energy network of a dyeing company that supplies surplus heat to a neighboring apartment during the night. This symbiosis network is one of the eco-industrial park (EIP) projects in Korea and aims to benefit local residents and the industrial complex by utilizing surplus heat. In this study, two categories were annualized. The first quantified environmental burden based on $CO_2$ emissions and quantified product value in terms of steam sales. The second used a variety of environmental factors, such as fossil fuel, water and waste, to quantify environmental burden and used steam sales to quantify value. The EEF of the symbiosis network was 1.6, using the global warming impact, and determined using the multiple variable, was 1.33. This study shows that the EEF depends on variable details of environmental burden but the values of this project were very high contrast to other business or EIP project.

• 정보처리학회논문지C
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• 제16C권6호
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• pp.699-706
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• 2009

유비쿼터스 컴퓨팅 기술의 발전과 IT-BT-NT를 포함한 기술간 컨버전스 경향은 유비쿼터스 헬스케어(u-Healthcare)의 실현을 가속화하고 있다. u-Healthcare 시스템은 센서 네트워크로부터 수집된 대량의 생체신호를 신속히 처리 분석하여 의료진에게 전달함으로써 시간과 장소에 관계없이 환자에게 적절한 의료 서비스를 제공할 수 있다. 기존의 u-Healthcare 시스템은 지그비(Zigbee) 프로토콜을 사용하여 센서 노드가 수집한 데이터를 전부 전송함으로써 베이스 노드의 처리 부담이 컸으며 센서 노드의 통신 빈도수가 많았다. 본 논문에서는 지그비 프로토콜 대신 블루투스(Bluetooth)를 사용하여 생명과 직접적 연관이 있는 생체신호 전달에 있어 보다 뛰어난 전송속도를 제공하며 유비쿼터스 환경에서 다양하게 사용되는 모바일 기기들에 효율적으로 적용시킬 수 있는 u-Healthcare 시스템을 설계하였다. 또한 미리 정의된 이벤트에 속하는 데이터만 선별하여 베이스 노드로 전송하는 EEF(Embedded Event Filtering) 기법을 적용하여 통신 빈도수와 처리 비용을 줄였다. 시뮬레이션 결과를 통해 기존의 심전도 측정시스템보다 효율적인 시스템임을 확인하였다.

• 한국산림과학회지
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• 제96권1호
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• pp.96-106
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• 2007

본 연구의 목적은 입장료 폐지가 국립공원의 탐방만족도 및 휴양자원, 공원시설, 교통, 탐방서비스, 탐방정보, 탐방분위기라는 국립공원의 관리부문에 미칠 영향을 파악하여 앞으로의 국립공원 관리정책 수립에 기여하는 것이다. 본 연구의 자료는 2006년 가을 가야산 국립공원 탐방객 336명을 대상으로 한 설문조사를 통해 수집되었으며, 기술적 통계분석, 상관분석, 다중회귀분석을 이용하여 분석하였다. 분석결과, 1) 국립공원 입장료 폐지에 대해서는 전체 응답자 중 72.6%가 찬성하였다. 2) 입장료가 폐지되면 자연훼손과 쓰레기 투기 등 탐방분위기가 가장 많이 나빠질 것으로 평가되었으며, 상업 숙박시설, 특산품 판매, 축제, 탐방정보 제공은 입장료 폐지 후 개선될 것으로 평가되었다. 3) 응답자들은 입장료가 폐지됨에 따라 탐방만족도가 상당히 저하될 것으로 판단하고 있는 것으로 나타났다. 4) 탐방만족도 저하에 가장 기여도가 큰 변수는 탐방분위기 변화수준이며, 가장 영향력이 작은 변수는 휴양자원 변화수준으로 나타났다. 본 연구결과는 입장료 폐지 후 국립공원 관리정책 방향을 설정하는데 활용할 수 있을 것이다.

• Asian-Australasian Journal of Animal Sciences
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• 제23권2호
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• pp.240-245
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• 2010

The effects of controlled energy restriction and duration of pre-incubation egg holding on fertility, hatchability and hatch losses were evaluated in aged broiler breeders (64 wk). The energy (ME) required for maintenance, activity, growth and anticipated egg production was calculated and offered to a control group (283-471 kcal/kg) from 21-64 weeks of age. In three other groups, ME was quantitatively reduced either by 20% (SER; severe energy restriction) or 10% (MER; moderate energy restriction) and increased by10% (EEF; excess energy feeding) over the control group (CER; controlled energy restriction). Each diet was offered to 130 pullets in individual cages, and the quantity of ME increased with age. At the end of 64 weeks, fertile eggs were collected from each dietary group for 11 consecutive days and grouped under 4 holding periods based on the length of storage (2, 5, 8 or 11 d). The influence of energy regimes, egg holding intervals and their interaction was evaluated on fertility, hatch losses and hatchability. Broiler breeders maintained on SER regime (231-419 kcal/d) produced maximum number of eggs (993) followed by MER (819), CER (624) and EEF (438) during the 11-day period. The percent fertility and hatchability was significantly (p$\leq$0.05) higher in SER and MER groups compared to CER and EEF. However, energy regimes did not influence the loss in egg weight during pre-incubation storage, shell weight, shell thickness or hatch losses as dead germs and dead in shell. The improvement in hatchability in SER and MER groups appeared to be closely related to higher fertility and lower embryonic mortality. Holding of eggs for 11 days showed a linear loss in egg weight with the length of storage, but did not influence the fertility and hatch losses. The percent hatchability on eggs set was maximum when storage period was restricted to 5 days. The interaction between energy regimes and egg holding periods exhibited better hatchability results with SER regime when eggs were held for 5 days. Response to MER was not different from SER. It was obvious that energy restriction during production period had a positive influence on egg number, fertility and hatchability in aged breeders. At 64 weeks of age, holding of fertile eggs for 5 days prior to incubation was adequate for optimum hatchability in breeders.

• 한국기계가공학회지
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• 제12권6호
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• pp.132-141
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• 2013

Robotic Drilling Systems(RDSs) set the standard for the factory automation systems in aerospace manufacturing. With the benefits of cost effective drilling and predictive maintenance, RDSs can provide greater flexibility in the manufacturing process. The system can be easily adopted to manage very complex and time-consuming processes, such as automated fastening hole drilling processes of large aircraft sections, where it would be difficult accomplished by workers following teaching or conventional guided methods. However, in order to build an RDS based on a CAD model, the precise calibration of the Tool Center Point(TCP) must be performed in order to define the relationships between the fastening-hole target and the End Effector(EEF). Based on the kinematics principle, the robot manipulator requires a new method to correct the 3D errors between the CAD model of the reference coordinate system and the actual measurements. The system can be called as a successful system if following conditions can be met; a. seamless integration of the industrial robot controller and the IO Level communication, b. performing pre-defined drilling procedures automatically. This study focuses on implementing a new technology called iGPS into the fastening-hole-drilling process, which is a critical process in aircraft manufacturing. The proposed system exhibits better than 100-micron 3D accuracy under the predefined working space. Based on the proposed EEF fastening-hole machining process, the corresponding processes and programs are developed, and its feasibility is studied.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2010년도 춘계학술발표대회
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• pp.214-217
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• 2010

유비쿼터스 컴퓨팅 기술의 발전과 IT-BT-NT를 포함한 기술간 컨버전스 경향은 유비쿼터스 헬스케어(u-Healthcare)의 실현을 가속화하고 있다. u-Healthcare 시스템은 센서 네트워크로부터 수집된 대량의 생체신호를 신속히 처리 분석하여 의료진에게 전달함으로써 시간과 장소에 관계없이 환자에게 적절한 의료 서비스를 제공할 수 있다. 기존의 u-Healthcare 시스템은 모든 이벤트를 전송하였다. 본 논문에서는 미리 정의된 이벤트에 속하는 데이터만 선별하여 베이스 노드로 전송하는 EEF(Embedded Event Filtering) 기법을 적용하여 통신 빈도수와 처리 비용을 줄였다. 시뮬레이션 결과를 통해 기존의 심전도 측정시스템보다 효율적인 시스템임을 확인하였다.