• Korean Journal of Construction Engineering and Management
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• v.18 no.3
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• pp.63-73
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• 2017

In contemporary society, it is increasingly common to spend more time indoors. As such, there is a continually growing desire to build comfortable and safe indoor environments. Along with this trend, however, there are some serious indoor-environment challenges, such as the quality of indoor air and Sick House Syndrome. To address these concerns the government implements various systems to supervise and manage indoor environments. For example, green building certification is now compulsory for public buildings. There are three categories of green building certification related to indoor air in Korea: Health-Friendly Housing Construction Standards, Green Standard for Energy & Environmental Design(G-SEED), and Indoor Air Certification. The first two types of certification, Health-Friendly Housing Construction Standards and G-SEED, evaluate data in a drawing plan. In comparison, the Indoor Air Certification evaluates measured data. The certification using data from a drawing requires a considerable amount of time compared to other work. A 2D tool needs to be employed to measure the area manually. Thus, this study proposes an automatic assessment process using a Building Information Modeling(BIM) model based on 3D data. This process, using open source Industry Foundation Classes(IFC), exports data for the certification system, and extracts the data to create an Excel sheet for the certification. This is expected to improve the work process and reduce the workload associated with evaluating indoor air conditions.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.8
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• pp.286-294
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• 2019

The purpose of this study is to determine what children's rights to play are. For this purpose, we extracted the core contents of schools' play environments and we developed a checklist that schools can use to evaluate their own play environments. We reviewed the UN Committee on the Rights of Children and the General Comments No. 17. Through this process, we found 16 core contents that the play environment should have. We conducted focus group interviews with children, parents and teachers, who are principle people involved with school play. The focus group interviews discussed the basic elements of the school play environment. The contents' validity was reviewed by a group of professionals. Based on this, we created an evaluation checklist with 10 major areas of the school play environment. The 10 areas of the school play environment evaluation scale are as follows. The ten areas of the play environment assessment scale for the school environment to ensure children's right to play are sufficient play time, sufficient play space, a child's best interests and the child's participation, nondiscrimination, diversity and freedom, challenge and adventure, safety, school policy, the play has an educating component, and community cooperation.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.26 no.4A
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• pp.707-717
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• 2006

As an alternative to conventional prestressed concrete (PSC) girders, various types of PSC girders are either under development or have already been applied in bridge structures. Incrementally prestressed concrete girder is one of these newly developed girders. According to the design concept, these new types of PSC girders have the advantages of requiring less self-weight while having the capability of longer spans. However, the dynamic interaction between bridge superstructures and passing trains is one of the critical issues concerning these railway bridges designed with more flexibility. Therefore, it is very important to evaluate modal parameters of newly designed bridges before doing dynamic analyses. In the present paper, a 25 meters long full scale PSC girder was fabricated as a test specimen and modal testing was carried out to evaluate modal parameters including natural frequencies and modal damping ratios at every prestressing stage. During the modal testing, a digitally controlled vibration exciter as well as an impact hammer is applied, in order to obtain precise frequency response functions and the modal parameters are evaluated varying with construction stages. Prestressed force effects on changes of modal parameters are analyzed at every incremental prestressing stage. With the application of reliable properties from modal experiments, estimation of dynamic performances of PSC girder railway bridges can be obtained from various parametric studies on dynamic behavior under the passage of moving train. Dynamic displacements, impact factor, acceleration of the slab, end rotation of the girder, and other important dynamic performance parameters are checked with various speeds of the train.

• Tunnel and Underground Space
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• v.34 no.4
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• pp.330-354
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• 2024

In site characterization of high-level radioactive waste, discontinuity(joint) distribution and rock mass classification, which are key evaluation parameters in the rock engineering field, were evaluated using deep boreholes in the Wonju granite and Chuncheon granite, which belong to Mesozoic Jurassic era. To evaluate joint distribution characteristics, fracture zones and joint surfaces extracted from ATV data were used, and major joint sets were evaluated along with joint frequency according to depth, dip direction, and dip. Both the Wonju and Chuncheon granites that were studied showed a tendency for the frequency of joints to increase linearly with depth, and joints with high angles were relatively widely distributed. In addition, relatively large amounts of weathering tended to occur even in deep depth due to groundwater inflow through high-angle joints. RQD values remained consistently low even at considerable depth. Meanwhile, joint groups with low angles showed different joint characteristics from joint sets with high angles. Rock mass classification was performed based on RMR system, and along with rock mass classification for 50 m intervals where uniaxial compressive strength was performed, continuous rock mass classification according to depth was performed using velocity log data and geostatistical techniques. The Wonju granite exhibited a superior rock mass class compared to the Chuncheon granite. In the 50 m interval and continuous rock mass classification, the shallow part of the Wonju granite showed a higher class than the deep part, and the deep part of the Chuncheon granite showed a higher class than the shallow part.

• The Korean Nurse
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• v.15 no.6 s.86
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• pp.42-60
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• 1976

1.행동특성별 제언 1 기본 지식면 첫째, 간호원리, 법칙에 관한 지식을 갖게 한다. 둘째, 간호학의 용어, 기호, 단어 및 개념에 대한 지식을 갖게 한다. 셋째, 간호원리, 의견, 활동을 검증하고 판단하는 기준에 관한 지식을 갖게 한다. 넷째, 간호현상의 과정, 경향, 원인, 순서에 관한 지식을 갖게 한다. 다섯째, 간호문제 요구를 처리하는데 필요한 수단 형식, 체제, 용법에 관한 지식을 갖게 한다. 여섯째, 학설에 관한 지식을 갖게 한다. 일곱째, 간호학 분야에서의 특수한 문제나 현상을 다루는데 쓰이는 탐구방법에 관한 지식을 갖게 한다. 여덟째, 간호 문제나 자료의 분류에 관한 지식을 갖게 한다. 아홉째, 특수한 사실의 성질, 특징, 정확성에 관한 지식을 갖게 한다. 제언 2 이해능력면 첫째, 간호문제를 창조적으로 해결하고 연구, 발전 시킬 수 있는 능력을 기른다. 둘째 간호현상을 정확하게 추리하고 검증하여 결론을 추출하며 진술하는 능력을 기른다. 셋째, 간호문제를 해석하고 자료를 재정리, 재배열, 또한 새로운 견지에서 해설하는 능력을 기른다. 넷째, 관찰된 간호현상을 설문화 또는 도표화 하는 능력을 기른다. 제언 3 태도면 첫째, 정서적 안정감을 유지하면서 환자와의 인간 관계를 원만하게 유지할 수 있는 태도를 기른다. 둘째, 확신을 갖고 간호활동에 임하는 태도를 기른다. 셋째, 한국사회가 필요로 하는 간호원의 역할을 스스로 감지 적응하고 간호활동 개선에 이바지하는 태도를 기른다. 넷째, 약품을 신중히 다루는 태도를 기른다. 다섯째, 새로운 직을 배워 개척하고자 하는 의욕을 갖게 한다. 제언 4 기능면 첫째, 환자를 이해하고 안정시킬 수 있는 능력을 갖게 한다. 둘째, 간호를 포괄적으로 수행할 수 있는 능력을 기른다. 셋째, 간호문제를 창의적으로 처리할 수 있는 능력을 기른다. 넷째, 새로운 간호지식이나 기술에 대해서 자율적으로 연수, 학습할 수 있는 능력을 기른다. 다섯째, 간호 문제에 대한 흥미와 호기심을 갖게 한다. 여섯째, 병실기구를 과학적이고 합리적으로 관리하는 기능을 기른다. 일곱째, 의료(진료)기구를 조작할 수 있는 능력을 기른다. 제언5 비판능력면 첫째, 간호문제나 현상 방법에 있어서 그 가치를 논리적 또는 주관적 기준에 의해 자료를 평가하는 능력을 기른다. 둘째, 일반적인 이론, 학설, 표준 사실에 입각해서 자료를 평가할 수 있는 능력을 기른다. 제언 6 분석능력면 첫째, 요소 및 부분들간의 관련과 상호작용 또는 인간관계를 관찰하고 분석할 수 있는 능력을 기른다. 둘째, 복잡한 간호문제를 부문별, 요소별로 분석하는 능력을 기른다. 셋째, 자료의 형태, 구조, 형식의 특징과 조직을 분석하는 능력을 기른다. 제언 7 종합 능력면 첫째, 간호계획 절차를 창안할 수 있는 능력을 기른다. 둘째, 자기의 생각을 효율적으로 전달하는 능력을 기른다. 셋째, 특수한 간호 현상이나 기본적 명제에서 어떤 추상적 관계를 연역해 낼 수 있는 능력을 기른다. 제언 8 응용능력면 첫째, 간호문제를 해결하는데 실제로 응용 할 수 있는 교육을 시킨다. 둘째, 간호이론을 구체적인 상황에 효율적으로 응용할 수 있는 능력을 기른다. 셋째, 지역사회의 특성에 알맞은 간호기술이나 간호절차를 창안할 수 있는 능력을 기른다. 넷째, 간호방법을 모색하고 이용하는 능력을 기른다. 다섯째, 조사를 통해 합리적이고 논리적인 결론을 내릴 수 있는 능력을 기른다.

• Journal of Food Hygiene and Safety
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• v.28 no.2
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• pp.115-123
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• 2013

Food safety management should be based on scientific evidences. FAO and WHO presented risk analysis as one of four principles in food safety management. WTO also admits the self safety regulation only when it is made on the basis of risk assessment. Without scientific analysis, tracing and eliminating the cause of food poisoning is impossible. Research and development plays a key role to produce scientific evidences. The Korean government ran over 40 programs in 11 agencies from 2008 to 2010. However, there is no statistics on food safety R&D at present. In this research, food safety projects conducted from 2008 to 2010 are listed up by means of analysing National Science and Technology Information Service (NTIS). The analytical criteria are the name of programs, national standard classification of science and technology, and keywords. As result, Korea Food and Drug Administration, Ministry for Food, Agriculture, Forestry and Fisheries, and Rural Development Administration play major role in the food safety R&D. The portion of more than one year projects should rise up in order to achieve the data for risk assessment, which is strongly required to improve. Besides, the research should be deeper so as to publish more SCI papers. The R&D portfolio should be changed in direction to raise up the portion of biological hazards such as norovirus. In order to do so, a large number of food safety programs should be emerged. The categories of food safety management and the hygiene/quality management of the agricultural and livestock products in the national standard classification of science and technology should be emerged because they are set up reflecting agencies' interests in spite of few differences between them.

• Journal of Gifted/Talented Education
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• v.21 no.2
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• pp.287-307
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• 2011

The purpose of this study is to investigate levels of mathematically gifted students' understanding of statistical samples through comparison with non-gifted students. For this purpose, rubric for understanding of samples was developed based on the students' responses to tasks: no recognition of a part of population (level 0), consideration of samples as subsets of population (level 1), consideration of samples as a quasi-proportional, small-scale version of population (level 2), recognition of the importance of unbiased samples (level 3), and recognition of the effect of random sampling (level 4). Based on the rubric, levels of each student's understanding of samples were identified. t tests were conducted to test for statistically significant differences between mathematically gifted students and non-gifted students. For both of elementary and middle school graders, the t tests show that there is a statistically significant difference between mathematically gifted students and non-gifted students. Table of frequencies of each level, however, shows that levels of mathematically gifted students' understanding of samples were not distributed at the high levels but were overlapped with levels of non-gifted students' understanding of samples.

• 대한공업교육학회지
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• v.41 no.1
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• pp.108-127
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• 2016

We confront incessant choices in life. A person or a group stands at a crossroad continuously and make decisions under limited conditions in each time in order to achieve a goal. These series of processions are referred to as decision making and dominates our actions. Based on this view, the decision making is crucial and it secures its own position in school education as well as in real life. The purpose of this study is to develop decision making skills instructional model that can be applied to improve decision making skills in technological subjects. The components of decision making skills in technological education was problem recognition, problem identification, alternative production, alternative assessment, optimum selection, optimum evaluate. An instructional models for improvement of decision making skills in technology education and examination was designed according to the components of decision making skills in technological education. Depending on the components of decision making skills developed a teaching material to experience each step. And in the teaching material was to verify the improved decision-making skill. Accordingly, a decision making instruction model in technology is expected to contribute to enhance students' decision making skills.

• Journal of Wetlands Research
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• v.24 no.4
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• pp.213-223
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• 2022

This study was conducted to establish a Habitat Suitability index (HSI) based on literature research and field surveys on ecology and habitat of 'Hynobius leechii'. And this study will be used as basic data for qualitative evaluation of habitat environment. The survey sites were divided into natural habitats close to the prototype habitat and artificial restoration areas where Hynobius leechii was monitored. So the types of habitats were diversified. Hynobius leechii is a vulnerable species to climate change because it is affected by the microhabitat and has low mobility. HSI variables of Hynobius leechii were extracted through domestic and overseas literature, and standards were extracted from literature research and field survey. The standards were presented as a value of the physical allowable category in consideration of realization. To verify the study, an in-depth consultation was conducted by amphibians experts. HSI variables of Hynobius leechii were included 9 variables such as Overstory canopy cover(%), Understory cover(%), Water-pH, Soil-pH, Soil relative humidity(%), Leaf litter depth(cm), Rock substrates (%), Type of Coarse woody, Distance from Street or Pollutant(m).

• Korean Journal of Environmental Agriculture
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• v.37 no.4
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• pp.283-290
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• 2018

BACKGROUND: Pesticide residue analysis is an essential activity in order to establish the food safety of agricultural products. Analytical approaches to the food safety are required to meet internationally the guideline of Codex (Codex Alimentarius Commission, CAC/GL 40). In this study, we developed a liquid chromatograph-tandem mass spectrometer (LC-MS/MS) method to determine the herbicide clopyralid in food matrixes. METHODS AND RESULTS: Clopyralid was extracted with aqueous acetonitrile containing formic acid and the extracts were mixed in a citrate buffer consisted of magnesium sulfate anhydrous, NaCl, sodium citrate dihydrate and disodium hydrogencitrate sesquihydrate followed by centrifugation. The supernatants were filtered through a nylon membrane filter and used for the analysis of clopyralid. The method was validated by accuracy and precision experiments on the samples fortified at 3 different levels of clopyralid. LC-MS/MS in positive mode was employed to quantitatively determine clopyralid in the food samples. Matrix-matched calibration curves were inearranged from 0.001 to 0.25 mg/kg with r2 > 0.994. The limits of detection and quantification were determined to be 0.001 and 0.01 mg/kg, respectively. There covery values of clopyralid for tified at 0.01 mg/kg in the control samples ranged from approximately 82 to 106% with relative standard deviations below 2 0%. CONCLUSION: The method developed in this study meets successfully the Codex guideline for pesticide residue analysis in food samples. This, the method could be applicable to determine pesticides in foods produced domestically and internationally.