• Communications for Statistical Applications and Methods
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• 제4권3호
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• pp.735-741
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• 1997

In the present paper, we propose a new randomization device free mail survey method. The estimator based on proposed model is unbiased and more efficient than the estimator based on SIngh, Mangat and Singh model (SMS-model)(1993) when $\pi$<1/2, and more protective than SMS-model in view of the protection of privacy regardless of the values of $\pi$ and $\pi_Y$ only if we count the number of say 'Yes' from the respondents. However, If we consider the respondents that say 'No', the SMS-model is more protective than our model.

• 한국조사연구학회지:조사연구
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• 제4권2호
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• pp.47-62
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• 2003

노동부에서 시행하는 $\ll$노동력수요동향조사$\gg$와 $\ll$임금구조기본통계조사$\gg$를 기초로 새로운 조사표와 조사방법의 도입으로 인한 영향을 분석하고 평가하는 간편한 통계적 방법을 제안한다. 두 조사 모두 매우 유사한 표집틀(sampling frame)과 표집법을 공유하고 있기 때문에 두 조사 중 어느 하나를 기준으로 다른 하나의 변동성을 측정할 수 있다. 여기서 제시하는 영향 평가는 연도별로 동일 범주에 속하는 두 독립적인 추계치들의 비를 기초로 진행되며 또한 새로운 조사의 도입 시점을 기준으로 전과 후로 분할된 비 데이터(ratio data)의 변동성을 통계적으로 비교하는 형식을 갖는다.

• 한국도로학회논문집
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• 제20권4호
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• pp.73-84
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• 2018

PURPOSES : Most of the traffic surveys are carried out by an inspection method by the manpower. In some cases, the video equipment is used only in some regions when the traffic volume is surveyed. In this case, there is environmental restriction that the road equipment to fix the video equipment should exist. Also, in areas where information such as digital maps and satellite photographs is old or not provided, they are forced to rely on manpower research, but it is difficult to put huge amounts of time and money into the research in places where labor supply and demand is difficult. This difficulty is particularly pronounced in overseas business. METHODS : The purpose of this study is to improve the efficiency of business by using the drones in the traffic investigation through analysis of the cost reduction effect between the existing method and the proposed method in the overseas business traffic survey. The scope of the research is limited to the scope of research, and based on the case of overseas projects, the method of using drone for each research sector is suggested. RESULTS : In the traffic condition survey section, we propose the use of drone for traffic survey and queue length survey, and it is confirmed that there is a cost saving effect of 16% ~ 27% compared with the existing method. In the road condition survey, we propose the use of drones for road surface linear survey, geometry survey, and obstacle survey, and it was confirmed that the cost reduction effect is 39% ~ 93% compared to the existing method. CONCLUSIONS : In addition to overseas business, it is expected that it will have a positive effect on research time and cost reduction by using drone in traffic survey in domestic area where labor supply is not easy or basic data is insufficient.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2009년도 제40회 하계학술대회
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• pp.359_360
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• 2009

KEPCO signed up with LS CABLE as a contractor for HVDC submarine cable construction in February 2009. The desk research has been completed in may 2009. Also, Cable route and the protection method will be selected by November 2009. The tentative cable route between Jindo and Jeju which is consisted of sea farms and shipping route zone will reach almost 105km. The oceanographic survey for the selection of protection method will be carried out and the survey lists are consisted of MBES, SSS, CPT, ADSP. The protection methods such as burial, Concrete Mattress, UP Pipe, Rock Berm will be selected as per each condition of sea area after the oceanographic survey is completed. Kepco has developed variable methods based on the maintenance experience for HVDC submarine cable between HAENAM and JEJU. Based on the such a accumulated know-how, it can be expected for the confidence and stability of the 2nd HVC project to be improved.

• 한국조사연구학회지:조사연구
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• 제10권2호
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• pp.115-136
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• 2009

본 논문은 군 조직을 대상으로 한 그간의 조사연구의 흐름을 살펴보고 군의 주요한 특징인 계급구조에 입각한 조사연구의 방향과 대안을 모색하였다. 군을 대상으로 한 조사연구는 제반조사환경의 제약으로 인해 조사연구 결과의 신뢰성을 확보하고 다양한 주제에 대한 함의를 제공하는 데 많은 제한이 있었다. 본 연구에서는 군 조사과정 및 결과에 중요하게 영향을 미치는 군의 위계적 계급구조의 특성을 입체적으로 파악한 뒤, 조사목적에 부합한 조사기획 및 분석방안을 도출하였다. 군 조사연구의 향후 개선방향은 군 계급구조의 특성을 고려한 군 조사기법의 정교화와 분석방법론의 다차원화로 구분하여 제시하였다 구체적으로 조사방법 및 조사과정을 보다 치밀하게 설계하여 조사를 실시하고 다양한 요인을 분석할 수 있는 다차원의 분석방법론을 개발, 적용하는 것이 필요함을 주장하였다.

• Communications for Statistical Applications and Methods
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• 제8권3호
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• pp.731-737
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• 2001

In this paper, we suggest and implement an internet survey system cooperating the randomized response technique(RRT). We compare it with the direct survey. RRT is an indirect survey method to get true information from the respondent who is conceived to have sensitive character without revealing his/her status. We implement our system(method) based a data-base system, so it common all kind of data obtained through internet surveys. This system also can be used in spot survey independently.

• 한국건축시공학회지
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• 제22권2호
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• pp.183-194
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• 2022

본 연구는 BF인증 평가방식의 BIM기반 검토 효율성 제고를 위한 기초연구로서 BIM 전문가를 대상으로 설문조사를 실시하였다. 건축물의 용도를 초등학교로 제한하여 BF인증 평가항목의 의무시설을 평가기준에 맞게 도출하는 것으로 예비조사를 실시하여 총 94개의 평가항목 중 63개 항목이 도출되었다. 도출된 시설은 매개시설, 내부시설, 위생시설이었으며 1차 조사는 BF인증 평가항목의 세부산출기준을 제공하고 BIM기반의 검토 가능성을 조사한 결과 31개의 항목이 도출되었다. 마지막 2차 조사에서 현행 CAD기반의 평가방식과 BIM기반의 평가방식의 효율성 정도를 물어 도출된 평가항목 중 96.8%가 BIM기반의 평가방식이 더 효율적임을 나타내었고, CAD기반의 평가방식은 단 1개의 평가항목인 3.2%를 나타내었다.

• 한국IT서비스학회지
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• 제4권1호
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• pp.149-160
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• 2005

Information system outsourcing induces firms to concentrate on the core competence and to improve business value by utilizing specialized information systems outsourcing vendors. However, for those strategic effects, the outsourced information systems should guarantee a certain service level. Now companies are considering to adopt SLA(Service Level Agreement) as a method to check the service level of the outsourced information systems in quantitative terms. On the contrary, customer satisfaction survey supports qualitative analysis, and helps companies to understand the qualitative effects on information system more systematically. Recently, the growing use of the internet makes customer satisfaction survey to be carried out on the web. For that reason, lots of researches related to web survey have been performed. But these researches are just focused on finding out only items to be measured and the effect of web survey. In this paper, based on the service quality research model for information system outsourcing, we formalize and propose a web survey process, a system architecture, and a functional structure for information system outsourcing customer satisfaction survey. Additionally, we provide the implementation results for the web survey systems.

• Parasites, Hosts and Diseases
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• 제61권2호
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• pp.216-224
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• 2023

In several schistosomiasis-endemic countries, the prevalence has remained high in some areas owing to reinfection despite repeated mass drug administration (MDA) interventions; these areas are referred to as persistent hot spots. Identifying hotspots is critical for interrupting transmission. This study aimed to determine an effective means of identifying persistent hot spots. First, we investigated the differences between Schistosoma haematobium and Schistosoma mansoni prevalence among school-aged children (SAC) estimated by a community-based survey, for which local key informants purposively selected communities, and a randomly sampled school-based survey. A total of 6,225 individuals residing in 60 villages in 8 districts of North Kordofan, Blue Nile, or Sennar States, Sudan participated in a community-based survey in March 2018. Additionally, the data of 3,959 students attending 71 schools in the same 8 districts were extracted from a nationwide school-based survey conducted in January 2017. The community-based survey identified 3 districts wherein the prevalence of S. haematobium or S. mansoni infection among SAC was significantly higher than that determined by the randomly sampled school survey (e.g., S. haematobium in the Sennar district: 10.8% vs. 1.1%, P<0.001). At the state level, the prevalence of schistosomiasis among SAC, as determined by the community-based survey, was consistently significantly higher than that determined by the school-based survey. Purposeful selection of villages or schools based on a history of MDA, latrine coverage, open defecation, and the prevalence of bloody urine improved the ability for identifying persistent hot spots.

• 동의생리병리학회지
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• 제29권1호
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• pp.66-71
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• 2015

The purpose of the study is to establish priorities in integrated medicine policy. Delphi method was used in conducting a survey on integrated medicine specialists regarding the policies of integrated medicine and actions. For specialists in integrated medicine, total 17 persons selected included scholars who performed minimum one study on integrated medicine, medical staff who performing integrated medical service at institutions that implemented integrated medical care or those who were involved in creating or implementing policies on integrated medicine. The first Delphi-method survey conducted from Apr. 14 through 18, while the second survey was carried out from Apr. 21 through 25. To prioritize the policies based on the results of the mini Delphi-method survey, Analytic Hierarchy Process(AHP) was performed for 15 persons answered to mini Delphi-method from May 2 through 16, 2014. From the Delphi-method survey, four policies and 16 actions were obtained. AHP showed the first priority placed on 'Building the Infrastructure of Industrialization in the Integrative medicine' of the 4 policies and 'Developing new diagnostic and treatment instruments' was given the highest priority of the 16 actions. For implementation of integrated medicine policy, the 4 policies and the 16 actions found in this research require government support and should be urgently implemented according to its priority.