• 제목/요약/키워드: Regression Testing

검색결과 695건 처리시간 0.033초

고등학생의 자원봉사활동 활성화 정책을 위한 탐색적 연구 -계획된행동이론을 중심으로- (Exploratory Study of a Revitalization Policy for High School Students' Volunteer Activities with Application of theory of Planned Behavior)

  • 고은교
    • 한국콘텐츠학회논문지
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    • 제12권12호
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    • pp.223-236
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    • 2012
  • 본 연구는 고등학생의 자원봉사활동에 미치는 영향요인들을 밝히고 실제적인 자원봉사활동 수행을 위한 정책적 함의를 제안하고자 하는데 목적이 있다. 이를 위하여 다양한 인간의 행동을 설명하는데 적용되는 계획된 행동이론을 근거로 제 요인의 관계성 및 영향을 검증하였다. 고등학생 220명을 연구대상으로 임의추출하여 자기기입식 설문조사 후 응답지 216부를 분석 자료로 활용하였다. 자료분석은 SPSS 12.0 for Windows와 AMOS 4.0을 사용하여 빈도분석 후 신뢰도 및 타당도를 확보하고, 모형의 적합성을 확인하였으며 가설검정을 위하여 회귀분석을 실시하였다. 연구결과, 첫째, 계획된 행동이론에 근거한 모든 가설이 지지되어 계획된 행동이론의 모형이 사회복지 분야의 다양한 행동관련 연구에 활용될 수 있는 유용성을 재확인하였다. 둘째, 제 요인 중 지각된 행동통제 요인이 고등학생의 능동적인 자원봉사활동의 수행에 가장 큰 영향을 미치는 것으로 나타났다. 이러한 연구 결과에 따라 고등학생들이 자원봉사활동에 대한 지각된 행동통제가 강화될 수 있는 사회복지학계의 연구 및 교육현장의 실천적 노력 및 교육계의 정책적 지원을 제언하였다.

한국과 중국동포의 심리적 특성과 창업동기가 창업의지에 미치는 영향 (The Effects of Korean and Korean-Chinese's Psychological Characteristics and Entrepreneur's Motive on Entrepreneurial Intention)

  • 박경석;하규수
    • 벤처창업연구
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    • 제9권2호
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    • pp.61-70
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    • 2014
  • 창업은 기업가 자신의 일자리 뿐 아니라 그 과정에서 다른 사람들의 창업기회를 만들어 준다. 창업의 활성화는 경제활성화 뿐만 아니라 일자리 창출을 위해 가장 효과적인 수단이라고 할 수 있다. 본 연구는 잠재적 창업가인 한국과 중국동포를 대상으로 창업의지에 영향을 미치는 요인들에 관하여 살펴보고자 한다. 창업자의 심리적 특성, 창업동기, 창업의지와 관련된 선행연구를 바탕으로 연구모형을 설정하였다. 2013년 한달 동안 설문조사를 실시하여 247부 데이터를 수집하였다. 수집된 데이터는 결과를 도출하기 위해 통계적 검증을 실시하였다. 가설검증 결과는 다음과 같다. 분석결과, 위험감수성향과 성취욕구는 대체로 한국과 중국동포의 창업의지에 유의한 영향을 주지 못하였다. 그러나 창업동기와 창업 자기효능감이 창업의도에 정(+)의 영향을 미치는 것으로 확인되었다. 마지막으로 사회적 지지가 창업의지에 영향을 주는 변수로 조절작용을 하는지에 대한 조절효과를 검증한 결과, 한국과 중국동포 모두 사회적 지지가 조절작용을 하는 것으로 나타났다. 또한 본 연구가 가지는 학문적 및 실무적 시사점이 논의되었고 한계와 함께 미래연구의 방향이 제시되었다.

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Effects of Antiretroviral Therapy on the Survival of Human Immunodeficiency Virus-positive Adult Patients in Andhra Pradesh, India: A Retrospective Cohort Study, 2007-2013

  • Bajpai, Ram;Chaturvedi, Himanshu;Jayaseelan, Lakshmanan;Harvey, Pauline;Seguy, Nicole;Chavan, Laxmikant;Raj, Pinnamaneni;Pandey, Arvind
    • Journal of Preventive Medicine and Public Health
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    • 제49권6호
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    • pp.394-405
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    • 2016
  • Objectives: The survival outcomes of antiretroviral treatment (ART) programs have not been systematically evaluated at the state level in India. This retrospective study assessed the survival rates and factors associated with survival among adult human immunodeficiency virus (HIV)-infected patients in Andhra Pradesh, India. Methods: The present study used data from 139 679 HIV patients aged ${\geq}15$ years on ART who were registered from 2007 to 2011 and were followed up through December 2013. The primary end point was death of the patient. Mortality densities (per 1000 person-years) were calculated. Kaplan-Meier and Cox-regression models were used to estimate survival and explore the factors associated with survival. Results: The overall median follow-up time was 16.0 months (2.0 months for the deceased and 14.0 months for those lost to follow-up). Approximately 13.2% of those newly initiated on ART died during follow-up. Of those deaths, 56% occurred in the first three months. The crude mortality rate was 80.9 per 1000 person-years at risk. The CD4 count (adjusted hazard ratio [aHR],4.88; 95% confidence interval [CI], 4.36 to 5.46 for < $100cells/mm^3$ vs. > $350cells/mm^3$), functional status (aHR, 3.05; 95% CI, 2.82 to 3.30 for bedridden vs. normal), and body weight (aHR, 3.69; 95% CI, 3.42 to 3.97 for <45 kg vs. >60 kg) were strongly associated with the survival of HIV patients. Conclusions: The study findings revealed that high mortality was observed within the first three months of ART initiation. Patients with poor baseline clinical characteristics had a higher risk of mortality. Expanded testing and counseling should be encouraged, with the goal of ensuring early enrollment into the program followed by the initiation of ART in HIV-infected patients.

관절염을 앓고 있는 여성들의 신체활동 장애와 우울감 사이 의존성의 매개효과 (Physical disability, perceived dependence and depression in women with osteoarthritis)

  • 박기수;양현수;김보경;전혜지
    • 농촌의학ㆍ지역보건
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    • 제40권4호
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    • pp.221-227
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    • 2015
  • 본 연구는 관절염 환자들의 신체활동에 대한 제한, 이러한 활동에 대한 상대적 의존성 그리고 우울감 사이의 관련성을 매개효과를 밝히고자 연구를 실시하였다. 연구대상자는 지역사회에 거주하는 여성 농업인 중 관절염을 앓고 있다고 응답한 자 중 209명을 임의로 추출하여 설문조사 방식으로 조사하였다. 결과적으로 관절염으로 인한 세 개의 활동영역(개인의 신변활동, 집안일, 거주지에서의 이동성 등)은 활동제한이 우울감에 직접 관련이 있다기 보다는 활동제한으로 인해 의존성이 발생되고 결과적으로 우울감이 발생되는 경로를 보여 의존성을 개선하였을 경우 우울감이 줄어들거나 극복될 수 있으며, 여가생활에 대한 활동제한은 우울감에 직접적인 효과가 있어 관절염환자들의 활동제한 중에서 무엇보다도 여가생활의 제한은 우울감에 직접적인 영향을 주므로 환자들에게서 여가생활을 적극 장려할 수 있는 프로그램 개발이 필요하다. 결론적으로 관절염환자들의 자기관리능력 함양, 보조 기구 지급을 통한 의존성의 개선은 이들 환자들의 우울감 개선이 될 것이다.

Developing the Accurate Method of Test Data Assessment with Changing Reliability Growth Rate and the Effect Evaluation for Complex and Repairable Products

  • So, Young-Kug;Ryu, Byeong-Jin
    • 한국신뢰성학회지:신뢰성응용연구
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    • 제15권2호
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    • pp.90-100
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    • 2015
  • Reliability growth rate (or reliability growth curve slope) have the two cases of trend as a constant or changing one during the reliability growth testing. The changing case is very common situation. The reasons of reliability growth rate changing are that the failures to follow the NHPP (None-Homogeneous Poisson Process), and the solutions implemented during test to break out other problems or not to take out all of the root cause permanently. If the changing were big, the "Goodness of Fit (GOF)" of reliability growth curve to test data would be very low and then reduce the accuracy of assessing result with test data. In this research, we are using Duane model and AMSAA model for assessing test data and projecting the reliability level of complex and repairable system as like construction equipment and vehicle. In case of no changing in reliability growth rate, it is reasonable for reliability engineer to implement the original Duane model (1964) and Crow-AMSAA model (1975) for the assessment and projection activity. However, in case of reliability growth rate changing, it is necessary to find the method to increase the "GOF" of reliability growth curves to test data. To increase GOF of reliability growth curves, it is necessary to find the proper parameter calculation method of interesting reliability growth models that are applicable to the situation of reliability growth rate changing. Since the Duane and AMSAA models have a characteristic to get more strong influence from the initial test (or failure) data than the latest one, the both models have a limitation to contain the latest test data information that is more important and better to assess test data in view of accuracy, especially when the reliability growth rate changing. The main objective of this research is to find the parameter calculation method to reflect the latest test data in the case of reliability growth rate changing. According to my experience in vehicle and construction equipment developments over 18 years, over the 90% in the total development cases are with such changing during the developing test. The objective of this research was to develop the newly assessing method and the process for GOF level increasing in case of reliability growth rate changing that would contribute to achieve more accurate assessing and projecting result. We also developed the new evaluation method for GOF that are applicable to the both models as Duane and AMSAA, so it is possible to compare it between models and check the effectiveness of new parameter calculation methods in any interesting situation. These research results can reduce the decision error for development process and business control with the accurately assessing and projecting result.

외식 소비 성향에 따른 감정 반응이 만족도에 미치는 영향 (The Effect of Emotional Response on Satisfaction according to the Dining-Out Consumption Pattern)

  • 김기영;백종온
    • 한국조리학회지
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    • 제16권3호
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    • pp.147-160
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    • 2010
  • 본 연구는 고급 한정식 레스토랑 이용 경험이 있는 고객을 대상으로 외식 소비 성향을 파악하여 외식 경험을 통해 느꼈던 감정 반응이 외식 결과 만족도에 미치는 영향을 분석하고자 문헌연구를 통하여 연구모형을 설계하고 가설을 도출하였다. 실증분석을 위하여 자기기입식(self-administered) 방법을 사용하여 총 250부의 설문지를 배포하여 235부(94%)의 설문지를 회수하였으며, 최종적으로 220부(88%)의 설문지가 분석에 사용되었다. 자료처리는 SPSS WIN Version 12.0 통계패키지 프로그램을 사용하여 분석하였으며, 빈도분석, 신뢰도분석과 요인분석을 실시하였으며, 가설 검증은 회귀분석을 통하여 검증하였다. 연구결과 "외식 소비 성향은 감정 반응에 유의한 영향을 미칠 것이다"에서는 건강 추구형과 관계 충성형은 즐거움에 유의한 영향을 미치는 것으로 증명되었으나, 휴식 추구형은 즐거움에 유의하지 않는 것으로 나타났으며, 건강 추구형과 관계 충성형은 자극에 유의한 영향을 미치는 것으로 증명되었으나, 휴식 추구형은 자극에 유의하지 않는 것으로 나타났다. "감정 반응은 만족도에 유의한 영향을 미칠 것이다"에서는 즐거움과 자극은 만족도에 유의한 영향을 미치는 것으로 증명되었다. 본 연구 결과 외식 소비 성향은 과거 생물학적 욕구를 충족시키기 위해서 단순히 식사 자체를 충족시키기 위한 목적과는 달리 현재 외식 소비 성향은 자신의 선호 취향이나 분위기 등 감정 반응의 중요성이 부각되고 있음을 보여주는 결과라고 사료된다.

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한방의료의 가격인하전략이 한방의료에 대한 수요와 경영수지에 미치는 영향 (Effects of Price Discount on the Demand and Revenue of Oriental Medical Clinic)

  • 김진현;이선동;박영우
    • 대한한의학회지
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    • 제17권2호
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    • pp.34-47
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    • 1996
  • 전국민의료보험제도가 실시된 이후 의료 서비스에 대한 수요는 외래 진료와 입원진 모두 현저한 상승 현상을 보여주고 있다. 그러나 이에 반해 한방의료에 대한 수요는 한방의료보험제도의 부분적 시행에도 불구하고 상대적으로 저조한 실정이며, 의료시장에서의 점유율도 점차 감소하고 있는 추세에 있다. 따라서 한방의료를 국민 속으로 널리 확산시키고 양방의료에 대한 대체 기능을 제고시키려면 소비자들이 보다 쉽게 한방의료에 접근할 수 있는 장치가 마련되어야 하며, 그 중에서 가장 핵심적인 요소는 한방의료의 가격을 적정한 수준으로 유지하는 것이다. 본고에서는 한방의료기관이 현재의 경영 상태를 유지하면서도 한방의료의 대중화를 촉진시킬 수 있는 한방의료의 적정 가격을 추계하여 제시하였다. 본 연구 결과에 의하면 한방의료의 가격탄력성은 약 5.8로 높게 나타나 가격이 하락할 때 한방의료에 대한 수요가 그 이상으로 증가할 것으로 예상되어 전체적으로 경영수지는 호전될 것으로 추계되었다. 첩약가의 인하가 한방의료기관의 경영수지에 미치는 영향을 분석한 결과에 의하면 한의사의 추가공급에 별다른 제한이 없는 경우, 가격탄력성이 6일 때 첩약가를 20%, 40%, 50%씩 인하하면 수입이 각각 76%, 104%, 100% 증가하는 것으로 추계되었다. 또 가격탄력성이 5인 경우에는 수입이 각각 60%, 80%, 75% 증가하고, 가격탄력성이 4인 경우에는 수입이 각각 44%, 56%, 50% 증가하는 것으로 추계되었다. 그리고 이윤율을 첩약가 인하 이전인 50% 수준으로 유지하고자 할 때 최대로 가능한 첩약가의 인하 폭을 산정한 결과, (i)가격탄력성이 현재와 같이 6인 경우에는 최대 가격인하율이 33.3%이며, 이 때 첩약의 이용량은 200% 증가하고 수입은 2배가 되는 것으로 나타난다. (ii)가격탄력성이 5인 경우에는 가격을 30% 인하할 때 지금과 같은 이윤을 누릴 수 있으며, 이 때 한의원의 수입은 75% 증가하는 것으로 추정된다. (iii)가격탄력성이 4일 때의 최대 가격인하율은 25%로서 이 경우에 수입은 50% 증가하는 것으로 추정된다.

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지역 중소기업의 환경, 역량, 전략이 수출성과에 미치는 영향 (Environment, Competence, and Strategy Effects on the Export Performance of Regional SMEs)

  • 김승호;허무열
    • 유통과학연구
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    • 제13권3호
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    • pp.61-67
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    • 2015
  • Purpose - Exports have long been regarded as significant drivers of sustainable competitive advantage and growth among small and medium enterprises (SMEs). The export activities of SMEs are particularly important in the context of export-oriented economies such as Korea. Although many studies have examined the determinants of exports, it is difficult to find empirical studies about the determinants of the export performance of regional SMEs. This study investigates the determinants of export performance in the regional SME context based on an integrated approach that combines the environment factor of industrial organization theory, competitive strategy theory, and the competences of the resource-based view. Research design, data, and methodology - To empirically analyze the determinants of export performance in the regional SMEs, data were collected from firms in the Daegu metropolitan area. Data were collected directly through questionnaire surveys; in addition, secondary financial data were also taken from the KIS-VALUE database. Out of the 175 responses that were received, 143 were considered to be worth examining. After testing the reliability and validity of the variables through multiple items such as environmental turbulence and competitive strategy, hypotheses were verified by using five multi-regression models. These models were: a control model with organizational size and age, an environmental model with technology and market turbulence, a competency model with R&D and foreign distribution channels, a strategy model with product and market differentiation, and an integrated model including all of these variables. Results - First, as a control variable, the organization size has significant positive effects on export performance. Second, technology turbulence based on industrial organization theory has significant positive effects on export performance, but market turbulence does not affect export performance. Third, the foreign market distribution competency of the resource-based view has strong positive effects on export performance, but the R&D competency does not affect export performance. Fourth, the product differentiation strategy from competitive strategy theory positively impacts export performance, but market differentiation does not affect export performance. Finally, in the integrated model, only the foreign distribution competency of the resource-based view has a significant effect on export performance. Conclusions - The empirical results of this study verified the usefulness of the rationales behind the three theories to explain the export performance of the regional SMEs, especially the importance of the foreign market distribution competency from the resource-based view. With regard to practical considerations, this study's implications suggest that the use of technological environmental changes by industries is better than the use of market changes. Further, the use of the product differentiation strategy is more effective than the use of the market-driving strategy, and the distribution channel competency plays a stronger role than the technology-oriented competency with regard to the export performance position of regional SMEs. Future studies should examine relational perspectives, such as trust among channel partners. Therefore, the configuration approach is more useful in enhancing pragmatism by comparing high- and low-export companies.

Screening in the Era of Economic Crisis: Misperceptions and Misuse from a Longitudinal Study on Greek Women Undergoing Benign Vacuum-assisted Breast Biopsy

  • Domeyer, Philip John;Sergentanis, Theodoros Nikolaos;Katsari, Vasiliki;Souliotis, Kyriakos;Mariolis, Anargiros;Zagouri, Flora;Zografos, George Constantine
    • Asian Pacific Journal of Cancer Prevention
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    • 제14권9호
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    • pp.5023-5029
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    • 2013
  • Background: To evaluate knowledge about screening tests and tests without proven screening value in a Greek Breast Unit population undergoing benign vacuum-assisted breast biopsy (VABB). Materials and Methods: This study included 81 patients. Three knowledge-oriented items (recommended or not, screening frequency, age of onset) were assessed. Regarding screening tests two levels of knowledge were evaluated: i). crude knowledge (CK), i.e. knowledge that the test is recommended and ii). advanced knowledge (AK), i.e. correct response to all three knowledge-oriented items. Solely CK was evaluated for tests without proven screening value. Risk factors for lack of knowledge were assessed with multivariate logistic regression. A second questionnaire was administered 18 months after VABB to assess its impact on the performance of tests. Results: Concerning screening tests considerable lack of AK was noted (mammogram, 60.5%; Pap smear, 59.3%; fecal occult blood testing, 93.8%; sigmoidoscopy, 95.1%). Similarly lack of CK was documented regarding tests without proven screening value (breast self-examination, 92.6%; breast MRI, 60.5%; abdominal ultrasound, 71.6%; barium meal, 48.1%; urine analysis, 90.1%; chest X-Ray, 69.1%; electrocardiogram, 74.1%; cardiac ultrasound, 75.3%). Risk factors for lack of AK were: place of residence (mammogram), age (Pap smear), personal income (sigmoidoscopy); risk factors for lack of CK included number of offspring (breast MRI, chest X-Ray), BMI (abdominal ultrasound), marital status (urine analysis), current smoking status (electrocardiogram). VABB's only effect was improvement in mammogram rates. Conclusions: A considerable lack of knowledge concerning screening tests and misperceptions regarding those without proven value was documented.

편의점의 서비스품질 요인이 서비스 만족 그리고 점포충성도에 미치는 영향: 서비스가치 조절효과를 중심으로 (The Impact of Service Quality on Service Satisfaction and Store Loyalty: Service Value as a Moderator)

  • 한상호;양회창;김종락
    • 유통과학연구
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    • 제13권10호
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    • pp.101-108
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    • 2015
  • Purpose - The convenience store business sector in South Korea has contributed to economic growth and job creation, and the growth potential of this market segment remains very high. In addition, service value is a more important factor than price in determining purchase intention. Research in the convenience store market is relatively very low compared to other retail sectors. In particular, research on service quality for the convenience of retailers who examine and analyze customer behavior and service quality factors used in the convenience store side of the situation is very inadequate. We have investigated the relationship of store service quality, service satisfaction, and store loyalty. In addition, we have examined the way service value moderates the relationship among these variables. Research design, data, and methodology - The questionnaire was developed using modified and supplementary questions based on the KD-SQS and RSQS models. The study suggested a theoretical model composed of 15 hypotheses on the relations between theoretic variables, and surveys conducted with consumers in discount stores in the Seoul and Gyunggi Metropolitan area in order to verify the hypotheses. We used the SPSS/PC statistical packages to analyze the results. The number of surveys used was 227. Moreover, a structural equating model was also used to analyze the reliability and validity of the composing elements and to verify the suggested hypotheses. Results - The overall results of this study are as follows. First, all service quality elements have a significant effect on service satisfaction. Second, all service quality elements have a significant effect on store loyalty. Third, service satisfaction has a significant effect on store loyalty. Finally, when the participants were divided into high and low service value the results of the multiple regression analyses showed that only the relationship between policy of service quality and satisfaction, and human interaction and policy of service quality and loyalty were significant. The implications are discussed based on the findings of the study. Conclusions - First, through direct hypotheses testing, we confirmed that the convenience service quality positively impacts the service satisfaction and loyalty of buyers. In particular, the reliability, origin benefit, and promotion were found to have more influence on satisfaction and loyalty of consumers of a convenience store. Further, for the service quality of the convenience for the consumer loyalty, greater human interaction was a high-value and statistically significantly higher than the degree of improvement in consumer loyalty. This underscores the importance of education and human services management of employees working in a convenience store. In particular, frequent changes in personnel generate results that negatively impact loyalty with customers. These results may lead to a serious problem in the economics of the store. Therefore, it should enhance the value of services through the establishment of training and compensation for employees. In addition, a certain educational level is required as well as a basis for compensation and retention.