• 품질경영학회지
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• 제21권2호
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• pp.215-223
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• 1993

A paired comparison which is a method of comparative judgements is widely used to increase the amount of information transmitted to human sense organ. In this study, a paired comparison method is proposed for the discrimination capacity and preference analysis of non-skilled sensory inspectors. We consider on order effect, that is, difference of evaluation occurred as a result of sample presentation by random order. The purpose of this paper is to determine a sample with the highest preference degrees by analyzing a discrimination capacity and evaluating preference degrees of sensory inspectors. An analysis of a discrimination capacity is bared on the capacity index obtained by an eigen-vector method and an evaluation of preference degrees is performed by a significance test.

• 생명과학회지
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• 제9권4호
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• pp.460-465
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• 1999

In the giant freshwater prawn Macrobrachium rosenbergii, the paired testes were united by the testes bridge in a H-shape. During mating male discharged two hemispermtophores from right and left genital pore and they were joined and formed a compound spermatophore in peach shape. Hemispermatophore was considered to be produced at proximal and middle vas deferens region. The compound spermatophore consisted of an eosinophilic inner matrix, a basophilic outer matrix and paired sperm mass burried in the basophilic matrix. The size of compound spermatophore was 6.4∼ 9.3 mm in length and 2.4∼5.1 mm in width regardless of carapace length. After the spermatophore was deposited on female's ventral sternum behind of 5th pereiopod, it was moved to the ventral surface of 3rd and 4th pereiopods by means of the beating of male's 1st and 2nd pleopods.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.158.6-158
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• 2001

A band function model paired comparison(BMPC) method is a kind of paired comparison methods. Considering that human has ambiguity, the BMPC method uses a monotonous increase function with the width as the human judgment characteristic. Since panel´s judgments do not always have enough response, it is very important to examine inspection abilities of each panel. In this study. We focus on the difference of band functions in each panel, which is the characteristic function of judgment in the BMPC method, and examine the method of obtaining panels inspection abilities. Three kinds of evaluation functions, "the dispersion of judgments", "the resolution", and "the difference of the judgments" are defined from Panel´s characteristic function of ...

• East Asian mathematical journal
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• 제34권2호
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• pp.155-176
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• 2018

The purpose of this article is to study the change of mathematics teaching efficacy of pre-service mathematics teachers in teaching practice course. For this purpose we collect data through questionnaire from 61 pre-service mathematics teachers. To make a questionnaire we rearrange Ryang's MTES items. The pre-service mathematics teachers fill out the questionnaire before and after teaching practice course. The data are analyzed by paired t-test using SPSS23. The result of paired t-test show that the difference between pre-test scores and post-test scores is significant statistically. So we can conclude that the mathematics teaching efficacy of pre-service mathematics teachers is changed and improved after teaching practice course.

• KIEAE Journal
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• 제7권3호
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• pp.63-70
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• 2007

It is known that early reflections, their energy and delay times after the arrival of direct sound are important factors for speech intelligibility. In this basis, acoustical parameters like D50 and C80 had been proposed and are widely used for assessing the listening condition of rooms. These parameters are focused on the fraction of the early energy to the total, regardless of the spatial characteristics of the early reflections. This means that all the early reflections, arrived in certain time boundary. from front, behind, down and upside have the same impact on speech intelligibility. From the questionable simplicity, the influence of the direction of early reflections on speech intelligibility is examined in this study. A computer simulation speech intelligibility test, conducted for 22 university students, found that the reflection of vertical direction with method of the Paired comparison also the preference of 0.746 degree was visible an increase.

• 한국항공운항학회지
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• 제28권4호
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• pp.82-88
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• 2020

Currently, flight training is not only a technical instruction that teaches maneuvering operations, but has expertise equal to that of general disciplines. Therefore, flight instructors must have academic knowledge and flight skills. As flight instructors are the first teacher in flight training for students who have never experienced actual flight control, the behavior of flight instructors will affect the students' flight education. Therefore, the influence of flight instructors for students are quite large compared to other educational institutions. In this study, the factors of instructional behavior were determined, and the actual state of instructional behavior of flight instructors were confirmed through students' survey. Improvements were derived to solve the problems identified in the survey results. For the follow-up analysis, improvements were applied to the flight instructors for 8 months, and then re-question was conducted to the same students who responded to the first questionnaire to find out the difference in results before and after through a paired t-test.

• 감성과학
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• 제13권3호
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• pp.501-510
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• 2010

본 연구에서는 모바일 정보기기의 콘텐츠 디자인을 목적으로 한 감성검색시스템의 구축에 있어 시스템의 주요 구성요소 중의 하나인 '사용자감성모델'을 풀 컬러 화상의 색상성분추출을 통하여 자동적으로 생성하는 방법을 제안하고, 평가실험을 통하여 시스템의 타당성을 검증하였다. 시각적 감성 유발 자극으로 100장의 인테리어 이미지 화상을 이용하여 데이터베이스를 작성한 후 48명의 실험 참가자를 대상으로 감성평가실험을 실시하였다. '사용자감성모델'의 신뢰성을 검증하기 위해 먼저 시스템이 검색한 이미지 속에 정답 이미지가 출현하는 재현율(Recall ratio)을 구하였다, 다음으로 시스템이 산출한 순위와 피험자가 평가한 순위 사이의 상관분석을 실시하였으며, 마지막으로 시스템이 산출한 상/하위 순위를 이용하여 Paired Samples t-test(2-tailed)분석을 실시하였다. 분석결과 전체 감성어에 대한 평균 재현율은 62.1%로 양호하게 나타났으며, 상관분석에서도 전체 감성어들이 정적 상관을 보이고 있는 것으로 나타났다(p<.01). 또한 Paired Samples t-test(2-tailed) 분석결과 'Casual'를 제외한 모든 감성어들에서 상위 이미지가 더 적합하며 그 차이가 유의미한 것으로 나타났다(t(9)=5.528, p<.05). 이와 같은 연구결과로부터 색상정보만으로 구축한 '사용자감성모델'이 상업공간의 이미지와 같은 시각자극의 검색에 있어서도 사용자의 감성을 반영할 수 있는 효율적인 방법인 점을 확인하였다.

• 무역학회지
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• 제46권1호
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• pp.135-154
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• 2021

This study aims to investigate the difference in the perception of shippers on the quality of air freight service between air express and air freight forwarders. This study suggests hypothesis verification and implications on importance-performance between two groups of air express and air freight forwarders. In this study, we find that important variables through paired t-test and importance-performance analysis. As a result of paired t-test, there was a difference in the use variables of the document work variables through computerization in the importance area. In the satisfaction area, there was a difference between the groups in the response to customer request and the response to accidents. The variables that need to improve the focus derived from the importance-performance analysis are document work through computer and response to accidents. It is necessary to observe and manage the response of shippers continuously by holding various transportation schedules in the schedule area, possibility of adjustment of transportation schedule, regular freight and schedule provision.

• 산업경영시스템학회지
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• 제47권2호
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• pp.84-92
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• 2024

The purpose of this study is to analyze effect of Army Risk Assessment System(ARAS) which is used to prevent safety accident in ROK army. Based on prior research, we select 4 indicators which are related to accident prevention effect and analyze the differences before and after ARAS operation for each indicators by using Paired-Samples T-Test. Also, we analyze the correlation between degree of ARAS operation and status of safety accidents of 112 ROK Army units. We conduct an evaluation of each function within the system using IPA method. The results of this study are as follows; All 4 indicators are improved compared to before ARAS operation, and the differences are statistically significant. Also, there is negative correlation between the degree of ARAS operation and the occurrence of safety accidents. So, the operation of ARAS has a positive effect on preventing safety accidents. Finally among the 15 functions of ARAS, 4 functions require improvement. The findings of this study have implications for proposing necessity of computerized system in enforcing Risk Assessment. Also, whether or not operating ARAS is important, but it is also important to operate it well. Lastly, We propose improvement plans for each function to operate it well.

• 한국산학기술학회논문지
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• 제16권12호
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• pp.8948-8956
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• 2015

이 연구는 대학신입생의 대학생활적응프로그램이 간호대학생의 대학생활적응과 간호전문직태도에 미치는 효과를 규명하고자 하였다. 대학생활적응프로그램은 전공별 이론 실습과 교양 인성함양 2개 영역으로 구성하였으며, 대학입학 전 예비 신입생에게 2주 동안 주 5회 10회기동안 70시간 운영되었다. 자료분석은 paired t-test, ANOVA로 하였다. 연구결과로, 대학생활적응(t=11.42, p=<.000)과 간호전문직태도(t=12.45, p=<.000)는 대학생활적응 프로그램 후에 통계적으로 유의하게 증가하였다. 결론적으로 이 연구는 대학신입생의 대학생활적응과 간호전문직태도에 긍정적인 영향을 미친 것으로 나타났다.