• Title/Summary/Keyword: space assessment tool

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Development of the Korean Handwriting Assessment for Children Using Digital Image Processing

  • Lee, Cho Hee;Kim, Eun Bin;Lee, Onseok;Kim, Eun Young
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.13 no.8
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    • pp.4241-4254
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    • 2019
  • The efficiency and accuracy of handwriting measurement could be improved by adopting digital image processing. This study developed a computer-based Korean Handwriting Assessment tool. Second graders participated in this study by performing writing tasks of consonants, vowels, words, and sentences. We extracted boundary parameters for each letter using digital image processing and calculated the variables of size, size coefficient of variation (CV), misalignment, inter-letter space, inter-word space, and ratio of inter-letter space to inter-word space. Children were also administered traditional handwriting and visuomotor tests. Digital variables from image processing were correlated with these previous tests. Using these correlations, we established a three-point scoring system that computed test scores for each variable. We analyzed inter-rater reliability between the computer rater and human rater and test-retest reliability between the first and second performances. The validity was examined by analyzing the relationship between the Korean Handwriting Assessment and previous handwriting and visuomotor tests. We suggested the Korean Handwriting Assessment to measure size, size consistency, misalignment, inter-letter space, inter-word space, and space ratio using digital image processing. This Korean Handwriting Assessment tool proved to have reliability and validity. It is expected to be useful for assessing children's handwriting.

A Study on Re-entry Predictions of Uncontrolled Space Objects for Space Situational Awareness

  • Choi, Eun-Jung;Cho, Sungki;Lee, Deok-Jin;Kim, Siwoo;Jo, Jung Hyun
    • Journal of Astronomy and Space Sciences
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    • v.34 no.4
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    • pp.289-302
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    • 2017
  • The key risk analysis technologies for the re-entry of space objects into Earth's atmosphere are divided into four categories: cataloguing and databases of the re-entry of space objects, lifetime and re-entry trajectory predictions, break-up models after re-entry and multiple debris distribution predictions, and ground impact probability models. In this study, we focused on reentry prediction, including orbital lifetime assessments, for space situational awareness systems. Re-entry predictions are very difficult and are affected by various sources of uncertainty. In particular, during uncontrolled re-entry, large spacecraft may break into several pieces of debris, and the surviving fragments can be a significant hazard for persons and properties on the ground. In recent years, specific methods and procedures have been developed to provide clear information for predicting and analyzing the re-entry of space objects and for ground-risk assessments. Representative tools include object reentry survival analysis tool (ORSAT) and debris assessment software (DAS) developed by National Aeronautics and Space Administration (NASA), spacecraft atmospheric re-entry and aerothermal break-up (SCARAB) and debris risk assessment and mitigation analysis (DRAMA) developed by European Space Agency (ESA), and semi-analytic tool for end of life analysis (STELA) developed by Centre National d'Etudes Spatiales (CNES). In this study, various surveys of existing re-entry space objects are reviewed, and an efficient re-entry prediction technique is suggested based on STELA, the life-cycle analysis tool for satellites, and DRAMA, a re-entry analysis tool. To verify the proposed method, the re-entry of the Tiangong-1 Space Lab, which is expected to re-enter Earth's atmosphere shortly, was simulated. Eventually, these results will provide a basis for space situational awareness risk analyses of the re-entry of space objects.

An application and evaluation of Alzheimer's Garden Audit Tool(AGAT) to assess outdoor space of the long-term care facility in Korea (국내 노인전문시설 옥외공간 평가를 위한 외국도구(AGAT)의 적용 후 평가)

  • Tak, Young Ran;An, Ji Yeon;Jung, So Young
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.19 no.1
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    • pp.9-22
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    • 2013
  • Purpose: The aging population is the quickly increasing in Korea. Since 2008, the National Long term Care Insurance, a number of long term care facilities have established during short time in Korea. Especially, the environmental assessment tool is important for managing healing environment in a long term care facility for the elderly. Alzheimer's Garden Audit Tool (AGAT) is used to assess whether a garden incorporates those elements and qualities as healing outdoor space. In this paper, we discuss the benefits, limitations, and future directions of the assessment tool for long-term care facilities. Methods : The AGAT audit was done through content analysis by 5 experts from diverse discipline as post occupancy evaluation of a long term care facility located in suburban area. The expert group was asked to describe their comments for modification and improvement in application of AGAT. Results : The results of this study show that it is necessary to refine the instrument's items to better meet the needs of the criteria and items for Korean culture-friendly tool. Especially, greenhouse elements (various plants, birds etc.), multisensory experiences, users-oriented space, programmed activities in garden, and hazards on pathway has somewhat limitation as measurement to assess outdoor of long-term care facilities in Korea. Implications : Consequently, AGAT could be applicable to evaluate the outdoor space of long term care facility in Korea with culturally sensitive revision.

The Development of Sensibility Evaluation Tools for User-Oriented Housing Interior Space (사용자 중심의 주거 실내공간 감성평가도구 개발)

  • Park, Ji-Min
    • Korean Institute of Interior Design Journal
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    • v.23 no.5
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    • pp.112-121
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    • 2014
  • The purpose of this study is to develop the user-oriented housing interior space sensibility evaluation tools: The user-oriented housing interior space sensibility evaluation tools shall be developed through the systematic selection process of the extracted housing interior space images, which were linked with the adjectives of sensibility evaluation selected for the housing interior space preferred by the user from the specific words of the sensibility extracted to identify the characteristics of the user's sensibility which is recently being changed. In the results of analyzing the words of sensibility for the residential space preferred by the users with 48 pairs of adjectives. The user-oriented sensibility assessment tool was built by extracting 8 sensibility factors of 'cozy', 'practical' 'cheerful', 'traditional', 'unique', 'congenial', 'sensuous', and 'gorgeous' in the exploratory factor analysis. The image scale was constructed in two-dimensions of the sense of space and the type of space for the residential interior space images. The dimension of the 'sense of space' is explained by the axis of open-closed and the dimension of 'type of space, is explained by the axis of 'natural-artificial'. Such a structural model of the residential interior design attributes were divided into 8 groups. And the 42 images representing each group were selected and the user-oriented residential interior space image tool was built by adding user's selective elements.

An Individual Learning Space System for WBI (WBI를 위한 개별 학습 공간 시스템)

  • 홍현술;서인규;박문환;한성국
    • Proceedings of the IEEK Conference
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    • 2000.06c
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    • pp.63-66
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    • 2000
  • WBI provides new opportunities to realize the flexible learning environment based on hypermedia and to support distance learning with a diverse interaction. The instructors or learners in WBI claim to be able to resolve reluctant fluctuations such as disorientation and cognitive overload. To overcome these phenomena, a supplementary tool able to manage learning space organized by the instructor's or learner's own way and offer effective navigation techniques is presented in this paper. A learning space management and navigation tool called HyperMap dynamically represents the learning space in the form of a two-dimensional labeled graph. This HyperMap also can be used for an instruction design tool, learner's portfolio for the exchange of learning experiences. and the assessment of WBI.

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A study on the Development of Assessment Category and Items for Building Design Evaluation - Focused on the Small and Medium Building - (건축물 디자인 평가를 위한 평가체계 및 평가항목개발에 관한 연구 - 중소형 건축물을 중심으로 -)

  • Ryu, Soo-Hoon
    • Journal of the Korean Institute of Rural Architecture
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    • v.11 no.2
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    • pp.19-27
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    • 2009
  • The purpose of this study is to develop an evaluation category and items for architectural design assessment in attempt to improve design of small scale buildings within Se-Jong City. Some of the domains in existing design assessment are building design, function, environment, and technology. The category and items developed in this study however, is composed to aim for the building's qualitative design assessment. Therefore the architectural assessment tool in this study includes design assessment of the building. Also, assessment category was comprised to verify the design expression used in improving the function and environmental condition of the building. The study was enforced by extracting raw data from existing architectural design related cases. Classification system and assessment category was developed and presented through combination of expert advice, survey, and sample test. In result of this study, the composition system required for design assessment can be divided into five large classifications ; public and harmony, access, form, environmental design, and space. Total of 24 assessment categories are developed and presented. The assessment category and standard presented in this study reflects the distinct regional characteristics and originality of Se-Jong city, creating one of a kind design assessment tool.

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A Study of the Changes in University Library Space and their Assessment Strategies (대학도서관 공간구성 변화 및 평가방안 연구)

  • Chang, Yunkeum
    • Journal of the Korean Society for information Management
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    • v.31 no.4
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    • pp.229-248
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    • 2014
  • University libraries have been attempting to reorganize their space through new building construction and remodeling to cope with the rapid changes in information and communication technologies and university environment. These changes seem to reflect the need for the shift of the university library functions toward the facilitator role of enabling continuous learning and research through space reorganization beyond the traditional supporter role of preserving and supplying library materials and providing learning space and services to university members. Despite all these changes of university library space functions, however, their assessment has been still limited to the library users' satisfaction and usage changes before and after library building renovation or new construction, calling for the need to develop proper measurement tools for evaluating the library functions as learning commons that reflect university vision and goals. Therefore, this study intends to analyze the trend of space reorganization practices in university libraries and the studies of evaluating its effect, in order to develop tools to evaluate the effectiveness of space reorganization and to provide basic data for future space reorganization and assessment strategies.

An Analysis on the Needs Assessment of School Library Facilities in Korea (학교도서관 시설에 대한 요구조사 분석)

  • Kim, Sung-Jun
    • Journal of the Korean Society for Library and Information Science
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    • v.50 no.3
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    • pp.93-112
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    • 2016
  • This study is an analysis on the needs assessment of school library facilities in Korea. After exploring KLA's Standards for Korean Libraries, IFLA's School Library Guidelines and AASL's Empowering Learners, the needs assessment tool of school library facilities was proposed in the previous study. The tool contains 10 major properties on school library facilities. This study gathered data from 507 students and 134 teacher librarians. The result of analysis is as follows: Students and teacher librarians evaluated the importance of library facilities more highly than the current level of facilities. Collection access, convenience and space are revealed more important properties to students and good environment, expandability, collection access are more important to teacher librarians among the properties.

Validation Study of Clinical Utility and Usability on Korean Version of the Life-Space Assessment to Assess Community Mobility (지역사회 이동성을 측정하는 한국어판 생활공간 평가(Korean Version of the Life-Space Assessment; K-LSA)의 임상적 유용성 및 사용성 검증 연구)

  • Kim, Jeong-Hui;Chang, Moon-Young
    • The Journal of Korean society of community based occupational therapy
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    • v.8 no.1
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    • pp.1-10
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    • 2018
  • Objective : The purpose of study is to validate the clinical utility and usability of the Korean version of the Life Space Assessment(K-LSA) which is an assessment tool of community mobility of older adults. Methods : Surveys on the clinical utility and usability of the K-LSA are carried out with a total of aoaa60 occupational and physical therapists. The surveys included the multiple choice questions on the clinical utility and open questions on the usability. Responses to multiple questions are post processed by frequency analysis and technical statistics, and responses to the open questions are categorized by common factors in each questions. Results : Average value of clinical utility ranges from 3.6 to 4.0 with positive responses of 'fair (3 point)', 'agree (4 point)' and 'strongly agree (5 point)' being 95~100%. Average value for clinical usability ranges from 3.6 to 4 with positive answers of 'fair (3 point)', 'easy (4 point)' and 'very easy (5 point)' being 88.3~100%. Additionally out of open-type questions of clinical usability, it was pointed out that the concept of 'neighborhood' for the life space level 3 and 4 is unclear. Conclusion : The current study and research outcomes showed that the K-LSA is a validated tool in Korean health care system for the clinical utility and usability in measuring community mobility, and that it is straightforward in practical use. It will help clinicians and therapists promote the social participation of older adults, and set an intervention goal for enhancing community mobility. It will further help clinicians and researchers in education and research for medical intervention and goal-setting.

Uncertainty Assessment using Monte Carlo Simulation in Net Thrust Measurement at AETF

  • Lee, Bo-Hwa;Lee, Kyung-Jae;Yang, In-Young;Yang, Soo-Seok;Lee, Dae-Sung
    • International Journal of Aeronautical and Space Sciences
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    • v.8 no.2
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    • pp.126-131
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    • 2007
  • In this paper, Monte Carlo Simulation (MCS) method was used as an uncertainty assessment tool for air flow, net thrust measurement. Uuncertainty sources of the net thrust measurement were analyzed, and the probability distribution characteristics of each source were discussed. Detailed MCS methodology was described including the effect of the number of simulation. Compared to the conventional sensitivity coefficient method, the MCS method has advantage in the uncertainty assessment. The MCS is comparatively simple, convenient and accurate, especially for complex or nonlinear measurement modeling equations. The uncertainty assessment result by MCS was compared with that of the conventional sensitivity coefficient method, and each method gave different result. The uncertainties in the net thrust measurement by the MCS and the conventional sensitivity coefficient method were 0.906% and 1.209%, respectively. It was concluded that the first order Taylor expansion in the conventional sensitivity coefficient method and the nonlinearity of model equation caused the difference. It was noted that the uncertainty assessment method should be selected carefully according to the mathematical characteristics of the model equation of the measurement.