• Journal of Positioning, Navigation, and Timing
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• v.2 no.1
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• pp.41-48
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• 2013

When the ground subsystem of Ground Based Augmentation System(GBAS) is installed at the airport, the functions and performance of subsystem should be evaluated through ground and flight testing at the pre-commissioning phase. In the case of GBAS flight testing, it can be conducted by the existing flight check aircraft, but the GBAS ground testing requires the development of specially customized equipment to perform the ground testing. Therefore, this paper describes the preliminary design of GBAS onboard test equipment which can be independently used for the GBAS ground testing and flight testing on a car and an aircraft.

• Proceedings of the Korean Society of Computer Information Conference
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• 2010.07a
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• pp.91-94
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• 2010

본 논문에서는 SDP 시스템이 충족해야 할 요구 규격을 검증하기 위하여 시험 환경 구축 방안을 제안하였다. SDP 시험 환경은 기능/성능/안정성 시험을 수행할 수 있도록 기존 항공관제시스템의 서브 시스템들과 동일한 기능을 수행하는 Simulation System들과 항적 추적 성능을 검증하기 위한 Eurocontrol의 SASS-C와 SMART 시스템으로 구축하였다. 또한 SDP 시험에 있어 Test Case 및 Test Procedure를 구성하여 SDP 요구 규격에 대한 정확한 검증을 수행할 수 있도록 시험 절차를 정의하였다. 제안된 시험 환경 및 시험 절차는 모의 시험을 통해 소프트웨어 구현 과정에서의 시스템 요구 규격에 대한 충족도를 보다 높일 수 있다.

• Journal of Korean Academy of Nursing Administration
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• v.3 no.1
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• pp.65-82
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• 1997

The purpose of this study was to investigate the role expectation of Clinical Nurse Specialist(CNS) in A tertiary-affiliated hospital in Seoul. Data were surveyed from Jul. 8, to Jul. 20, 1996. 74 medical doctors and 119 nurses participated in this survey. For data analysis, SPSS/PC+ program was used: ${\chi}2-test$, t-test, ANOVA. The difference was analyzed by the subjects' position and department. The results of this study were summarized as follows: 1. The perception about the CNS system : Most of the subjects of study perceived that the introduction of CNS system was needed. And the introduction time of CNS system was demanded as fast as possible, or after special preparation. 2. The comparison of the need for the subroles of the CNS in A tertiary-affiliated hospital : The need for the subroles(0=not known, 1=not needed to 4=absolutely essential) was significantly different between medical doctors and nurses. The total mean scores for degree of need for each subole were as follows: Education 3.37, Consultant 3.34, Researcher 3.29, Direct care provider 2.86. 3. The comparison of the percent of time spent in A tertiary-affiliated hospital : The percent of time spent was significantly different between medical doctors and nurses. The total mean percent of time spent in the five subroles was as follows: Direct care provider 34.9%, Educator 23.9%, Researcher 18.9%, Consultant 12.8%, and Management/Change agent 9.5% According to the study results, suggestions were made: 1. Further study for the need of the CNS role as direct care provider is needed, after correcting the items within the narrow scope in some clinical department. 2. Development of the detail roles for the extent of autonomy is needed, and validity should be tested. And then they will be used for the basic data of the role development of the CNS.

• Journal of People, Plants, and Environment
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• v.22 no.6
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• pp.621-628
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• 2019

The purpose of this study was to investigate the reliability and validity of the Korean version of the Connectedness to Nature Scale(K-CNS), which was translated from the Connectedness to Nature Scale(CNS) developed by Mayer and Frantz. For this study, questionnaires were conducted with a sample of 407 Korean citizens from various backgrounds and regions, with the ages ranging from 17 to 60. Exploratory factor analysis, internal consistency test and correlation checks were conducted on this questionnaires data. The results of exploratory factor analysis supported that the K-CNS has 10 items in a single factor. The internal consistency of the K-CNS was .880. The K-CNS was positively correlated to the NEP (New Environmental Paradigm), satisfaction with life, mental health, compassionate love, and negatively correlated to stress response. In addition, differences were found by group and age, but not by the gender. The K-CNS was higher in the natural-friendly group than in the general group. By age, the K-CNS scores was high in 40s and 50s than 10-39 years old.

• Proceedings of the Korean Geotechical Society Conference
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• 2005.10a
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• pp.489-498
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• 2005

In this study, the shaft resistance of drilled shafts socketed into weathered-and soft-rocks was examined by the constant normal stiffness(CNS) test. Large scale model tests were performed for different unconfined compressive strength, socket roughness, initial normal stress, and normal stiffness for identifying shear load transfer characteristics. Through comparisons with previous studies, it is found that the results by the present approach is good agreement with the general trend observed by existing empirical and analytical results.

• Advances in Traditional Medicine
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• v.4 no.4
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• pp.249-252
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• 2004

The methanol extract of Diospyros peregrina bark was studied for its effect on the central nervous system (CNS) using the pentobarbitone induced sleeping time test, the open field test and the hole cross test in Swiss albino mice. The present investigation revealed that the extract, at the doses of 250 and 500 mg/kg, significantly prolonged the pentobarbitone induced sleeping time in mice though the onset of sleep was delayed as compared to the control. In open field test, the depressing effect was prominent from the second observation period (30 min) and persisted throughout the entire experimental period (240 min). In the hole cross test, the depressing effect was observed from the second observation period (30 min) and persisted up to fifth observation period (120 min) for 250 mg dose group and up to sixth observation period (180 min) for 500 mg dose group. These results support the finding that D. peregrina bark extract at the above doses has CNS depressing effects and indicate that D. peregrina bark may contain biologically active constituent(s) having CNS depressant activity.

• 한국IT서비스학회:학술대회논문집
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• 2003.11a
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• pp.657-665
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• 2003

ERP 시스템은 전사 통합 관점에서 기업 전체의 업무를 관리하기 때문에, 업무 집중도가 높고, 처리량이 많으며, 업무가 Waterfall 모델로 설계된 부분이 많은 특성이 있어, 어느 한 부분의 성능 문제가 전체 시스템 운영의 중대한 Issue로 확대될 가능성이 크다. 본 논문을 통해서 ERP 시스템의 성능 Issue를 사전에 점검할 수 있는 성능 테스트(Performance Testing) 방법을 연구했고, 실제 ERP 시스템 구축 Project에 투입되어 성능 테스트를 진행한 사례를 고찰하여, 발견된 Issue를 토대로 ERP 시스템의 성능을 최적화하고 시스템을 안정적으로 운영할 수 있는 방안을 연구해 보았다.

• Advances in Traditional Medicine
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• v.6 no.1
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• pp.21-26
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• 2006

The ethanolic extract of Fleurya interrupta Gaud, (Urticaceae) was tested for its possible neuropharmacological effects on experimental animals, For the primary neuropharmacological screening of this plant, the ethanolic extract of its aerial parts was subjected to preliminary evaluation for acute toxicity, antinociceptive activity and central nervous system (CNS) activities. At the doses of 125 and 250 mg/kg, the extract significantly (P < 0.01 and P < 0. 001) and dose-dependently increased the frequency of acetic acid induced writhing in mice. In the pentobarbitone induced sleeping time test, the extract at the above dose levels, significantly and dose-dependently decreased the pentobarbitone induced sleeping time (P < 0.001) and increased the time for onset of sleep (P < 0.001) in mice. In the open field and hole cross tests, test animals showed an increase in their movement in the both tests from the 2nd observation period (30 min) and persisted throughout the entire experimental period (240 min). These results of the extract may attribute a stimulating action on the CNS. On the basis of these findings, it can be assumed that the extract exerts its stimulating effect on the CNS in mice by interfering with the cortical function or increasing the effect of some CNS stimulating neurotransmitters.

• Geomechanics and Engineering
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• v.29 no.1
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• pp.91-97
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• 2022

The cohesive non-swelling soil (CNS) cushion technology has been widely applied in the subgrade and slope improvement at expansive soil regions. However, the mechanism of the inhibition effect of the CNS layer on expansive soil (ES) has not been fully understood. We performed four outdoor model tests to further understand the inhibition effect, including different kinds of upper layer and thickness, under the unidirectional seepage condition. The swelling deformation, soil pressure, and electrical resistivity were constantly monitored during the saturation process. It is found that when a CNS layer covered the ES layer, the swelling deformation and electrical resistivity of the ES layer decreased significantly, especially the upper part. The inhibition effect of the CNS layer increases with the increase of CNS thickness. The distribution of vertical and lateral soil pressure also changed with the covering of a CNS layer. The electrical resistivity can be an effective index to describe the swelling deformation of ES layer and analyze the inhibition effect of the CNS layer. Overall, the CNS deadweight and the ion migration are the major factors that inhibit the swelling deformation of expansive soil.

• Advances in Traditional Medicine
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• v.3 no.1
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• pp.21-28
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• 2003

The pharmacological effects of an Ayurvedic diuretic drug 'Treenoponchomul' (TPM) was investigated in animal model. The pharmacological actions of the test drug along with that of the components thereof, on the Central Nervous System (CNS) were studied. The drug under study TPM showed little effect on the CNS, the same can not be said about the components. The most prominent CNS depressant effect was observed with Saccharum officinarum Linn. (EE) in that it lowered the spontaneous motor activity as well the exploratory -behavior of the animals. An exploration retarding effect of moderate degree, was evident with Imperata cylindrica Beauv. (UU), and Phragmites maxima Blatter & McCann (NN). Although the test drug did not alter the normal locomotor and/ or exploratory behavior of the treated animals, it did significantly (p<0.01) lower the locomotion of the amphetamine induced hyperactive animals. TPM along with its components (especially Desmostachya bipinnata Stapf. Root, KU), significantly reduced the gastro-intestinal motility of the treated animals (p<0.01). The test drug and its components lowered the body weight of the treated animals, on being administered chronically (30 days), with EE being the only exception.