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Health Behavior for Cancer prevention and Influencing Factors in University Students (대학생의 암 예방 건강행위와 영향요인)

  • Kim, Young-Sook
    • The Journal of Korean Society for School & Community Health Education
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    • v.13 no.2
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    • pp.45-58
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    • 2012
  • Purpose: The study was done to identify health behavior for cancer prevention in university students according to characteristics of the university students and other factors affecting health behavior for cancer prevention and to provide data to set up a strategy to reduce the cancer. Methods: Data were collected by questionnaires from 353 university students in G city. To analyze the sample survey data, descriptive statistics, t-test, ANOVA, Scheffe's test, and multiple regression analysis were performed with SPSS/WIN 15.0. Results: Significant factors that affect health behaviors for cancer prevention in university students were perception of health status, knowledge and attitudes about cancer, and smoking. These variables explained 21% of health behaviors for cancer prevention. Conclusion: The results of this study indicate that in order to improve the health behavior for cancer prevention in university students it is important to development health education programs that focus on positive perception of health status. This development could be enhanced with structured and on-going education about cancer.

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A qualitative study on job-seeking stress for university students majoring healthcare (보건계열 대학생의 취업 스트레스에 관한 질적 연구)

  • Oh, Yeseul;Oh, Eun-Hwan
    • The Journal of Korean Society for School & Community Health Education
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    • v.14 no.1
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    • pp.25-36
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    • 2013
  • Objectives: The study was performed to investigate job-seeking stress for university students who have a major in healthcare. Methods: For the analysis, 10 fourth-year students who are willing to get a job were interviewed. Interviews were conducted from October 2011 to November 2011 for 2 weeks. The data were collected with semi-structured open-ended questions and analysed by the method of Consensual Qualitative Research(CQR). Results: The main reasons for the job-seeking stress for students were insufficient preparation for getting a job, uncertainty, anxiety, pressure, and age. A reinforcing factor for stress was family. Conclusions: Universities should provide educational, psychological, and economic supports to job-seeking students majoring healthcare because of their relatively fewer opportunities for getting a job compared to those who have a major in non-healthcare.

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Single Exposure Imaging of Talbot Carpets and Resolution Characterization of Detectors for Micro- and Nano- Patterns

  • Kim, Hyun-su;Danylyuk, Serhiy;Brocklesby, William S.;Juschkin, Larissa
    • Journal of the Optical Society of Korea
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    • v.20 no.2
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    • pp.245-250
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    • 2016
  • In this paper, we demonstrate a self-imaging technique that can visualize longitudinal interference patterns behind periodically-structured objects, which is often referred to as Talbot carpet. Talbot carpet is of great interest due to ever-decreasing scale of interference features. We demonstrate experimentally that Talbot carpets can be imaged in a single exposure configuration revealing a broad spectrum of multi-scale features. We have performed rigorous diffraction simulations for showing that Talbot carpet print can produce ever-decreasing structures down to limits set by mask feature sizes. This demonstrates that large-scale pattern masks may be used for direct printing of features with substantially smaller scales. This approach is also useful for characterization of image sensors and recording media.

Reliability Modeling and Computational Algorithm of Network Systems with Dependent Components (구성요소가 서로 종속인 네트워크시스템의 신뢰성모형과 계산알고리즘)

  • 홍정식;이창훈
    • Journal of the Korean Operations Research and Management Science Society
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    • v.14 no.1
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    • pp.88-96
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    • 1989
  • General measure in the reliability is the k-terminal reliability, which is the probability that the specified vertices are connected by the working edges. To compute the k-terminal reliability components are usually assumed to be statistically independent. In this study the modeling and analysis of the k-terminal reliability are investigated when dependency among components is considered. As the size of the network increases, the number of the joint probability parameter to represent the dependency among components is increasing exponentially. To avoid such a difficulty the structured-event-based-reliability model (SERM) is presented. This model uses the combination of the network topology (physical representation) and reliability block diagram (logical representation). This enables us to represent the dependency among components in a network form. Computational algorithms for the k-terminal reliability in SERM are based on the factoring algorithm Two features of the ractoring algorithm are the reliability preserving reduction and the privoting edge selection strategy. The pivoting edge selction strategy is modified by two different ways to tackle the replicated edges occuring in SERM. Two algorithms are presented according to each modified pivoting strategy and illustrated by numerical example.

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An X-ray Diffraction Study on ZrH2 under High Pressures (고압하에서 ZrH2에 대한 X-선 회절 연구)

  • 김영호
    • Journal of the Mineralogical Society of Korea
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    • v.9 no.1
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    • pp.35-42
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    • 1996
  • Polycrystalline ZrH2 in tetragonal crystal system has been compressed in a modified Bassett-type diamond anvil cell up to 36.0 GPa at room temperature. X-ray diffraction data did not indicate any phase transitions at the present pressure range. The pressure dependence of the a-axis, c-axis, c/a and molar volume of ZrH2 was determined at pressures up to 36.0 GPa. Assuming the pressure derivative of the bulk modulus (K0') to be 4.11 from an ultrasonic value on Zr, bulk modulus (K0) was determined to be 160Gpa by fitting the pressure-volume data to the Birch-Murnaghan equation of state. Same sample was heated at $500^{\circ}C$ at the pressure of 9.8 GPa in a modified Sung-type diamond anvil cell. Unloaded and quenched sample revealed that the original tetragonal structure transforms into a hexagonal structured phase with a zero-pressure molar volume change of ~115.5%.

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An ESL Teacher's Perspective on Recasts: A Qualitative Exploration of "When" and "How"?

  • Byun, Ji-Hyun;Kayi-Aydar, Hayriye
    • English Language & Literature Teaching
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    • v.16 no.4
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    • pp.1-18
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    • 2010
  • Recasts, which are defined as implicit types of corrective feedback, have been the focus of numerous SLA researchers for more than a decade. A range of classroom-based observational and experimental research studies have explored how and when language teachers provide recasts to learners' ill-formed utterances and aimed to understand the role of recasts in language acquisition or learning. On the basis of previous studies on recasts, our study investigated when an ESL teacher provided recasts and how recasts were provided in his class. The research questions were as follows: (1) When does an ESL teacher provide recasts? (2) How does the teacher provide recasts? The data came from observations of one ESL classroom as well as consecutive-semi structured interviews with the teacher. The data analysis included transcriptions of teacher-student interactions in the target setting and categories of recasts according to the linguistic phenomena, which prompted recasting. Based on the findings, practical suggestions for ESL teachers were provided. [156 words].

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Environment Modeling for Autonomous Welding Robotus

  • Kim, Min-Y.;Cho, Hyung-Suk;Kim, Jae-Hoon
    • Transactions on Control, Automation and Systems Engineering
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    • v.3 no.2
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    • pp.124-132
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    • 2001
  • Autonomous of welding process in shipyard is ultimately necessary., since welding site is spatially enclosed by floors and girders, and therefore welding operators are exposed to hostile working conditions. To solve this problem, a welding robot that can navigate autonomously within the enclosure needs to be developed. To achieve the welding ra나, the robotic welding systems needs a sensor system for the recognition of the working environments and the weld seam tracking, and a specially designed environment recognition strategy. In this paper, a three-dimensional laser vision system is developed based on the optical triangulation technology in order to provide robots with work environmental map. At the same time a strategy for environment recognition for welding mobile robot is proposed in order to recognize the work environment efficiently. The design of the sensor system, the algorithm for sensing the structured environment, and the recognition strategy and tactics for sensing the work environment are described and dis-cussed in detail.

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A XML Schema Matching based on Fuzzy Similarity Measure

  • Kim, Chang-Suk;Sim, Kwee-Bo
    • 제어로봇시스템학회:학술대회논문집
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    • 2005.06a
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    • pp.1482-1485
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    • 2005
  • An equivalent schema matching among several different source schemas is very important for information integration or mining on the XML based World Wide Web. Finding most similar source schema corresponding mediated schema is a major bottleneck because of the arbitrary nesting property and hierarchical structures of XML DTD schemas. It is complex and both very labor intensive and error prune job. In this paper, we present the first complex matching of XML schema, i.e. XML DTD, inlining two dimensional DTD graph into flat feature values. The proposed method captures not only schematic information but also integrity constraints information of DTD to match different structured DTD. We show the integrity constraints based hierarchical schema matching is more semantic than the schema matching only to use schematic information and stored data.

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A Comparative Study of Image Recognition by Neural Network Classifier and Linear Tree Classifier (신경망 분류기와 선형트리 분류기에 의한 영상인식의 비교연구)

  • Young Tae Park
    • Journal of the Korean Institute of Telematics and Electronics B
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    • v.31B no.5
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    • pp.141-148
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    • 1994
  • Both the neural network classifier utilizing multi-layer perceptron and the linear tree classifier composed of hierarchically structured linear discriminating functions can form arbitrarily complex decision boundaries in the feature space and have very similar decision making processes. In this paper, a new method for automatically choosing the number of neurons in the hidden layers and for initalzing the connection weights between the layres and its supporting theory are presented by mapping the sequential structure of the linear tree classifier to the parallel structure of the neural networks having one or two hidden layers. Experimental results on the real data obtained from the military ship images show that this method is effective, and that three exists no siginificant difference in the classification acuracy of both classifiers.

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Web Information Extraction using HTML Tag Pattern (HTML 태그페턴을 이용한 웹정보추출시스템)

  • Park, Byung-Kwon
    • Proceedings of the Korea Association of Information Systems Conference
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    • 2005.05a
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    • pp.79-92
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    • 2005
  • To query the vast amount of web pages which are available i]l the Internet, it is necessary to extract the encoded information in the web pages for converting it into structured data (e.g. relational data for SQL) or semistructured data (e.g. XML data for XQuery), In this paper, we propose a new web information extraction system, PIES, to convert web information into XML documents. PIES is based on a user-specified target schema and HTML tag pattern descriptions. The web information is extracted by the pattern descriptions and validated by the target schema. We designed a new language to describe extraction rules, and a new regular expression to describe HTML tag patterns. We implemented PIES and applied it to the US patent web site to evaluate its correctness. It successfully extracted more than thousands of US patent data and converted them into XML documents.

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