• 한국환경복원기술학회지
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• 제23권2호
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• pp.17-31
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• 2020

In the field of environmental landscape architecture, the internet medium is used as an effective communication tool not only in the private level but also in the policy level. Recently, the active utilization of mobile web service is emphasized as the time changes, but there is not much improvement or advance in services due to lack of relevant studies. Therefore, this study is intended to provide basic data needed for improvement and advance by researching the quality of mobile web service among multichannel services provided in environmental landscape architecture related internet media. The model for measuring service quality is SERVQUAL, which was verified in the study of Choi(2015), Choi and Koo(2016), and the final valid samples are total 230. First, the subjects were analyzed as the representative media that are possible to acquire comprehensive knowledge related to environmental landscape architecture. Second, the highest importance level in each subsection was 'protection and security maintenance of customer information' followed by 'Reliability about accurate information supply'. Regarding performance level, 'Reliability about accurate information supply' and 'professional knowledge to communicate with users' are highly evaluated. Third, regarding Importance-Performance Analysis(IPA), the first priority management should is 'Tangibles', and the next are 'Responsibility' and 'Empathy'. The ones for maintenance of the status quo are 'Reliability' and 'Assurance', and there is none for effort reduction. Meanwhile, regarding the importance of each factor and difference in the quality of PC web service and mobile web service studied before, the biggest difference is in 'Tangibles', followed by 'Assurance', 'Empathy', 'Responsibility' and 'Reliability'. It is suggested that the revitalization of Landscape information science(LB1106) presented in the National Science&Technology Standard Classification System is needed. In the future, it is necessary to research the change trend on users' response through continuous evaluation of improved mobile web service.

• 대한한의학회지
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• 제38권1호
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• pp.56-71
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• 2017

Objectives: The purpose of this study was to review the article using an IMU(Inertial Measurement Unit) for measuring the cervical range of motion and to evaluate the feasibility of using an IMU for measuring the cervical range of motion. Method: Scopus was used to search for the articles relating to the inclusion criteria. Which is measuring the cervical range of motion using an IMU. A total of 15 articles were selected through discussion. Degree and the reliability of the cervical range of motion and the validity of the data within the articles were extracted. Results: The measurement of the cervical range of motion using an IMU were $92.25^{\circ}$ to $138.2^{\circ}$, $122.4^{\circ}$ to $154.9^{\circ}$, $73.75^{\circ}$ to $93.1^{\circ}$ on the sagittal plane, transverse plane, and coronal plane respectively. 38 of the 43 values showed good reliability. They were larger than 0.75. 5 of the 43 values showed reliability less than 0.75. They were measured by smart phone. 16 of the 21 values showed good validity. The remaining 5 were measured by smart phone. The lower reliability and validity of smart phone were related to the protocol. The IMU can measure the coupling motion and may be used in various situations. Conclusion: The IMU may become a gold standard for measuring the cervical range of motion. The IMU measured not only the cervical range of motion but also the coupling motion. Furthermore, IMU may be used in various situations. Therefore, IMU must be considered a valuable measurement device.

• 한국전문물리치료학회지
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• 제23권3호
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• pp.40-47
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• 2016

Background: Assessments of Sit-to-Stand (STS) and gait functions are essential procedures in evaluating level of independence for the patients after stroke. In a previous study, we developed the software to analyze center of pressure (COP) in standing position on Wii Balance Board (WBB). Objects: This purpose of this study is to measure test-retest reliability of ground reaction forces, COP and time using WBB on STS and gait in healthy adults. Methods: Fifteen healthy participants performed three trials of STS and gait on WBB. The time (s), vertical peak (%) and COP path-length (cm) were measured on both tasks. Additionally, counter (%), different peak (%), symmetry ratio, COP x-range and COP y-range were analyzed on STS, 1st peak (%), 2nd peak (%) of weight were analyzed on gait. Intra-class correlation coefficient (ICC), standard error measurement (SEM) and smallest real difference (SRD) were analyzed for test-retest reliability. Results: ICC of all variables except COP path-length appeared to .676~.946 on STS, and to .723~.901 on gait. SEM and SRD of all variables excepting COP path-length appeared .227~8.886, .033~24.575 on STS. SEM and SRD excepting COP path-length appeared about .019~3.933, .054~11.879 on gait. Conclusion: WBB is not only cheaper than force plate, but also easier to use clinically. WBB is considered as an adequate equipment for measuring changes of weight bearing during balance, STS and gait test which are normally used for functional assessment in patients with neurological problems and elderly. The further study is needed concurrent validity on neurological patients, elderly patients using force plate and WBB.

• 한국경제지리학회지
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• 제12권4호
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• pp.540-556
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• 2009

허브-스포크 망은 항공, 육상 교통 및 정보통신분야에서 유동의 규모의 경제를 고려하여 기간망을 설계하는 대표적인 입지 최적화 문제이다. 이 연구는 우선, 기존의 허브 스포크 망에 관한 지리학 및 타 분야의 연구 경향과 함께 최근 논의되고 있는 신뢰성에 기반한 허브 입지 모델을 소개한다. 기본 모델은 입지 배분 방식에 따라 단일 배분 및 다중 배분 입지 모델로 구분되고, 기본 모델의 확장 형태로서 최소 유동량 제약을 적용한 입지 디자인 모델이 제시되었다. 모델의 행태를 살펴보기 위해 미국의 15개 도시의 신뢰성 및 유동 자료를 이용하여 네트워크의 규모의 경제성과 네트워크 비용, 그리고 신뢰성간의 관계에 초점을 두어 분석을 하였다. 이 연구는 경제성과 신뢰성에 바탕을 둔 입지 문제 및 네트워크 최적화 분야에 고려해야 할 요인의 특성을 밝혔다는 점에서 그 중요성이 강조된다.

• 한국전문물리치료학회지
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• 제26권3호
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• pp.99-105
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• 2019

Background: Although magnetic resonance imaging is accurate, it is expensive to measure the movement of temporomandibular joint. The three-dimensional (3D) motion analysis system is an inexpensive measurement tool. Objects: This study examined the reliability of quantifying the mouth opening and lateral mandibular shift and differences between individuals with and without temporomandibular disorder (TMD) using the hygienic method of surface markers on the skin with 3D ultrasound-based motion analysis. Methods: This study included 24 subjects (12 with and 12 without TMD). Temporomandibular joint motion during mouth opening was recorded using two surface markers with 3D ultrasound-based motion analysis. An intraclass correlation coefficient [ICC (3,k)] was used to confirm the intrarater reliability of quantifying kinematic temporomandibular joint motion, and an independent t-test was used to evaluate differences in maximal mouth opening and lateral mandibular shift between the two groups. Results: Assessment of mouth opening and lateral mandibular shift showed excellent test-retest reliability with low standard error of measurement. The lateral mandibular shift and opening-lateral mandibular shift ratio were significantly increased in the TMD group during maximum mouth opening (p<.05). However, no significant difference in maximal mouth opening was observed between the groups with and without TMD (p>.05). Conclusion: This hygienic and simple surface marker method can be used to quantify the mouth opening and lateral mandibular shift at the end-range of mouth opening. The TMD group showed an increased lateral mandibular shift movement at the end-range of mouth opening. The lateral mandibular shift movement can be regarded as a symptom in the diagnosis and treatment of TMD.

• Structural Engineering and Mechanics
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• 제78권3호
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• pp.351-368
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• 2021

This paper, by applying a reliability-based framework, develops seismic vulnerability macrozonation maps for Tehran, the capital and one of the most earthquake-vulnerable city of Iran. Seismic performance assessment of 3-, 4- and 5-story steel moment resisting frames (SMRFs), designed according to ASCE/SEI 41-17 and Iranian Code of Practice for Seismic Resistant Design of Buildings (2800 Standard), is investigated in terms of overall maximum inter-story drift ratio (MIDR) and unit repair cost ratio which is hereafter known as "damage ratio". To this end, Tehran city is first meshed into a network of 66 points to numerically locate low- to mid-rise SMRFs. Active faults around Tehran are next modeled explicitly. Two different combination of faults, based on available seismological data, are then developed to explore the impact of choosing a proper seismic scenario. In addition, soil effect is exclusively addressed. After building analytical models, reliability methods in combination with structure-specific probabilistic models are applied to predict demand and damage ratio of structures in a cost-effective paradigm. Due to capability of proposed methodology incorporating both aleatory and epistemic uncertainties explicitly, this framework which is centered on the regional demand and damage ratio estimation via structure-specific characteristics can efficiently pave the way for decision makers to find the most vulnerable area in a regional scale. This technical basis can also be adapted to any other structures which the demand and/or damage ratio prediction models are developed.

• Composites Research
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• 제19권3호
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• pp.7-14
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• 2006

본 논문에서는 내압 하중을 받는 복합재 압력 용기의 신뢰도를 구하기 위해 확률적 강도 해석이 수행되었다. 이때 확률적 강도 해석은 점진적 파손 모델과 몬테카를로 시뮬레이션으로 구성된 확률 연속 파손 모델과 상용 유한 요소 해석 코드인 ABAQUS가 연계한 형태로서 복잡한 형상 및 경계 조건을 갖는 복합재 구조물의 확률적 파손 해석을 수행하게 된다. 설계확률 변수로서 복합재 층의 각 방향 별 강도가 고려되었다. 최종적으로, 확률 강도 해석을 통해 복합재 압력 용기의 파열 압력 분산 현상이 설명되었고, 복합재 압력 용기의 각 부위별 신뢰도 값이 제시되었다. 양산 중인 복합재 구조물인 경우, 재료 및 제작 공정의 불확실성이 구조물 성능에 미치는 영향이 더욱 커지게 되어 확률 강도 해석을 이용한 구조 설계가 필수적이다.

• 대한물리의학회지
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• 제19권3호
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• pp.55-63
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• 2024

PURPOSE: This study examined the test-retest reliability and clinical utility of the Modified Trunk Impairment Scale (mTIS), Trunk Control Test (TCT), and Postural Assessment Scale for Stroke - Trunk Control (PASS-TC) in patients with chronic stroke. METHODS: Thirty-eight stroke patients were reassessed using the mTIS, TCT, and PASS-TC with a seven-day interval between assessments. The test-retest reliability was evaluated using the intraclass correlation coefficient (ICC_2,1), the standard error of measurement (SEM), the minimal detectable change (MDC), and MDC%, as well as Bland-Altman analysis. The relationship between the mTIS, TCT, PASS-TC scores, and the Barthel Index (BI) was also investigated. RESULTS: The test-retest reliability for the mTIS, TCT, and PASS-TC was high, with ICC values ranging from .91 to .94 (95% confidence interval: .83-.97). The MDCs for the mTIS and TCT were 2.35 and 13.9, respectively, while the MDC for the P ASS-TC was 2.54, all below 20% of the maximum possible score, indicating reliable measurement. The optimal mTIS cut-off score for distinguishing between mild (75-95 points) and severe (50-74 points) dependence on the BI was ≥ 9.5, with an accuracy of 79%. Patients with an mTIS score ≥ 9.5 (out of 15) showed an 18-fold higher likelihood of achieving a mild level of functional independence than those with a score < 9.5. CONCLUSION: The mTIS, TCT, and PASS-TC showed high test-retest reliability and no systematic errors in chronic stroke patients. The MDC values were reliable, indicating meaningful change. Among these, the mTIS is a sensitive and a useful tool for predicting functional independence in clinical practice and is straightforward to apply.

• 한국기록관리학회지
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• 제12권1호
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• pp.189-207
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• 2012

본 연구는 표준 기록관리시스템이 공공기관에서 운영되는 것이 일반화되기 시작한 시점에서 시스템에 대한 전반적인 진단이 필요하다고 보고 기록관리시스템의 기능성과 인터페이스에 대한 만족도를 평가하였다. 이러한 평가를 통하여 표준 기록관리시스템의 문제점을 파악하고 더 나아가서 기능성을 향상시킬 수 있는 개선점을 밝히는 것이 본 연구의 목적이다. 이를 위하여 현재 표준 기록관리시스템을 사용하는 기록관리 전문요원은 시스템 기능성을 신뢰성, 효율성, 사용성면에서 평가하였고 인터페이스에 대해서는 사용성면에서 평가하였다. 그 결과, 기능 품질에 대해서는 보통정도의 만족도를 보였지만, 시스템 인터페이스에 대해서는 불만족한 것으로 나타났다. 또한 기록관리 전문요원은 시스템 신뢰성을 더 만족하였지만 효율성과 사용성과의 통계적인 차이는 없는 것으로 나타났다. 따라서 앞으로 표준 기록관리시스템 사용 용이성을 높여야 하고 대량 일괄작업과 기능의 모듈화를 통하여 시스템의 효율성을 높여야 할 것이다. 기록관리시스템이 계속적으로 발전하기 위해서는 중장기적인 계획 아래 표준을 먼저 재정비하고 이에 따라 시스템 수정 보완을 지속적으로 수행해야 할 것이다.

• 디지털융복합연구
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• 제15권5호
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• pp.61-69
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• 2017

본 논문에서는 공공기관의 빅데이터를 활용한 표준분석모델을 살펴보고, 실제 사례현장의 분석결과를 통해 빅데이터 표준분석모델의 적합성과 효과성을 확인하고자 한다. 특히 행정효율성을 향상시킬 수 있는 분야인 민원, CCTV 등의 빅데이터에 대한 표준분석모델을 대상으로 하였다. 이를 위해 빅데이터 표준분석 지표를 산출하고 K시의 CCTV우선설치지역 사례에 적용하여 빅데이터 표준분석모델의 정확성을 조사하였다. 빅데이터 표준분석 모델을 활용한 K시의 사례분석 결과, 우선 설치리스트 상위 지점 모두 범죄취약지수 중 환경지수 값이 전반적으로 낮게 나온 반면, CCTV미설치 지역에 따른 감시취약지수와 야간 및 심야 시간대의 유동인구 지수가 높게 나타났다. 이는 실제로 CCTV설치에 대한 민원이 높고 그 필요성을 인지하고 있는 지역으로 빅 데이터 분석결과가 높은 정확성을 나타내고 있음을 확인할 수 있다. 이러한 연구결과는 빅데이터 활용과 분석에 의한 행정 효율성의 제고 및 디지털 융합 환경에서 빅데이터 표준분석 모델의 의미있는 시사점을 제시하고 있다.