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Characteristics on Stabilization Measures for Cutting Slopes of Forest Roads (임도구조 요인에 따른 절토비탈면 안정구조물의 특성)

  • Baek, Seung-An;Ji, Byoung-Yun;Lee, Joon;Cha, Du-Song
    • Journal of Forest and Environmental Science
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    • v.30 no.1
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    • pp.71-75
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    • 2014
  • Forest roads failure is one of the most common problems caused by heavy rainfalls. This study investigated the characteristics on stabilization measures installed for cutting slopes failure of forest road resulted from heavy rainfalls. Three primary factors (slope length, slope gradient, soil type) affecting cutting slope failure were considered and stabilization measures were classified into two types (A type: wooden fence, vegetation sandbag, stone masonry; B type: wire cylinder, gabion, concrete retaining wall) through discriminant analysis based on their capacity of resistance to slope failure. Results showed that A type was mainly installed in such conditions as cut slope <8 m, cut slope gradient $30-40^{\circ}$ and soil type with soil while B type occurred in locational conditions as cut slope length >8 m, cut slope gradient < $30^{\circ}$ and > $30^{\circ}$, and soil type of gravelly soil and rock.

Design Classification and Development of Pattern Searching Algorithm Based on Pattern Design Elements - With focus on Automatic Pattern Design System for Baseball Uniforms Manufactured under Custom-MTM System - (패턴설계요소기반의 디자인 분류 및 패턴탐색 알고리즘개발 - 맞춤양산형 야구복 자동패턴 설계시스템을 위한 -)

  • Kang, In-Ae;Choi, Kueng-Mi;Jun, Jung-Ill
    • Fashion & Textile Research Journal
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    • v.13 no.5
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    • pp.734-742
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    • 2011
  • This study has been undertaken as a basic research for automatic pattern design for baseball uniforms manufactured under custom-MTM system, propose building up of a system whereby various partial patterns are combined under an automatic design system and develop a multi-combination type pattern searching algorithm which allows development of a various designs. As a result of this, type classification based on pattern design elements includes side, open, collar, facing and panel type. Design have been divided into coarse classification ranging from level 1 to 7 according to pattern design elements, based on a design distribution chart. Out of 7 such levels, 3 major types determining design which are, more specifically, level 1 sleeve type, level 2 open type and level 3 collar type, have been taken and combined to determine a total of 12 types to be used for design classification codes. Respective name of style and patterns have been coded using alphabet and numerals. Totally, pattern searching algorithm of multi-combination type has been developed whereby combination of patterns belonging to a specific style can be retrieved automatically once that style name is designated on the automatic pattern design system.

A Study on Lower Body Shapes from Classification of Middle Aged Men's (중년 남성의 하반신 체형분류에 관한 연구)

  • 성옥진
    • Journal of the Korean Society of Clothing and Textiles
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    • v.28 no.3_4
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    • pp.499-508
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    • 2004
  • The purpose of this research is to define body characteristics of middle-aged men at ages between 35 and 55 whose physical changes are very prominent, by comparing the measurement data collected from this age group. This research also classifies different body types, and provides basic data for designing slacks' original forms according to each body type. Based on factor analysis of the measured data, seven key factors are grouped. And five different body types are classified based on the cluster analysis using factor marks. Type 1 refers to those who are tall and standard. This body type is characterized by trapezoid body shape when looked from the front, and slim abdomen when looked from the side. Type 2 refers to short and a little fat body shapes, with trapezoid front and protruding hip and abdomen. Type 3 refers to tall and fat body shapes, with rectangular front, protruding abdomen, and slim hip. Type 4 refers to those who are of medium height and a little obese, with rectangular front and protruding abdomen and hip. Type 5 refers to short and obese body shapes, with rectangular front, slim abdomen, and protruding hip. 12 items are available to judge middle-aged men's low body types and the hit ratio is 90%.

The Study of Flow Rate Performance and Engine Application with LPG Composition Rate for LPi Fuel Supplying System Consisted of Turbine Type Pump (터빈방식 연료펌프로 구성된 LPi 연료공급 시스템의 LPG 조성비에 따른 토출성능 및 엔진적용성에 관한 연구)

  • Lim, Mu-Chang;Myung, Cha-Lee;Park, Sim-Soo;Park, Jeong-Nam;Kim, Sung-Kun
    • Transactions of the Korean Society of Automotive Engineers
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    • v.15 no.3
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    • pp.99-105
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    • 2007
  • Currently, BLDC fuel pump was applied on LPi vehicle using 3rd fuel supply system as liquified phase LPG injection method had already shown better performance than others. Its cost, however, is rather expensive because of drawbacks such as complicated structure, a fault of localization of system. In this work, demonstration system for a developed turbine type fuel pump to replace BLDC system was setup and investigated. This study results that fuel mass flow rate of turbine type pump and injection performance of injector were better compared to BLDC type. Comparing flow rate of summer LPG with that of winter LPG, the flow rate decreased about 25% using winter LPG. Performance applying turbine type LPi fuel pump to engine is confirmed.

Analysis of Relationship Between Job Stress and Fatigue According to The Type A/B Behavior Pattern of Physical Therapists

  • Wang, Joong San
    • Journal of International Academy of Physical Therapy Research
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    • v.8 no.2
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    • pp.1135-1141
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    • 2017
  • Stress and fatigue are general physical aspects of our daily lives. It has been shown that physical therapists have different levels of job stress and fatigue according to the type A/B behavior patterns. This study collected data from 212 physical therapists between October 28 and November 23, 2016 using an anonymous, self-administered questionnaire. The study results showed the proportion of physical therapists with the Type A behavior patterns(TABP) was 18% greater than that of physical therapists with the Type B behavior patterns(TBBP). In this study, physical therapists with TABP were compared with physical therapists with TBBP. The results indicated that physical therapists with TABP were more inclined to experience higher levels of overall job stress and fatigue from the following stress factors: physical environment, job requirement, and job autonomy. Therefore, the stronger the tendency toward TABP, the stronger the feeling of job stress and fatigue from physical environment, job requirement, and job autonomy. Those with a tendency toward TBBP showed positive correlations between job requirement and the total job stress score; thus, the stronger the tendency toward TBBP, the stronger the feeling of overall job stress and fatigue from job requirement. This study suggests that it is necessary to manage the job stress and fatigue of physical therapists with both TABP and TBBP and to manage the job stress and fatigue of physical therapists with the type A behavioral pattern.

Study on Application of Shaft Box type Balcony for Improvement of Ventilation Performance in Apartment (공동주택의 환기성능 개선을 위한 Shaft Box형 발코니의 적용성 검토)

  • Roh, Ji-Woong;Kim, Gon
    • KIEAE Journal
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    • v.7 no.6
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    • pp.3-8
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    • 2007
  • Recently, because of the continuous rise of international oil price, energy saving is strongly demanding. So, Ecological technics of architecture such as use of natural energy have been actively explored in the field of building. In the method of utilizing natural energy, the key point is to saving energy effectively as not lowering the comfort of indoor environment, various systems investigated. Many papers about double skin facade system have been reported, it is announced broadly that the system is very effective in improvement of natural ventilation and indoor thermal environment, and also protecting outdoor sound. The shaft box facade is a special form of box window construction. It consists of a system of box windows with continuous vertical shafts that extend over a number of stories to create a stack effect. The facade layout consists of an alternation of box windows and vertical shaft segments. This research investigated the natural ventilation performance of shaft box type balcony which conform the shaft box type double skin to the exiting balcony construction. First, analyzed various types of exiting apartments, proto-type was decided. By using virtual environment Program, modeling the proto-type, compared the contribution of air temperature and the effect of outdoor air cooling. by this research, we confirmed that shaft box type balcony had many possibility for improvement of indoor environment.

A Study on Sizing System of Cycling Wear Top for Athlete depending on Upper Body Type for High School Male Cyclists (고등학교 남자 사이클 선수의 상반신 유형 분류에 따른 선수용 사이클 웨어 상의 치수체계에 관한 연구)

  • Park, Hyunjeong;Do, Wolhee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.44 no.6
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    • pp.1139-1153
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    • 2020
  • Upper body types were classified to develop the sizing system of the cycling wear top for the high school male cyclist. The research methods were performed using the anthropometric measurements of 111 high school male cyclists that included cluster analysis was performed. The research results are as follows. Type 1 (23.4%) has the longest biocromion length, is the tallest of the three types and a proper body type. Type 2 (25.2%) has the largest weight and developed muscles in the chest parts. Type 3 (51.4%) is the shortest of the three types and is a skinny body with a bending back. In order to develop a sizing system, the 12 anthropometric measurements were selected for correlation analysis. The bust circumference and stature were presented as the control dimensions of sizing system. The waist front, waist back length and biacromion length were less correlated with other items; consequently, they were independent items and were set as referable dimensions. Therefore, it was proposed as a sizing system because the 5 cm of bust and 5 cm of stature have a high coverage by body type. The total coverage rate was 81.9%.

Happiness from What We Have and What We Experience: Attribute Non-alignability Increases Anticipated Satisfaction from Experiential Purchases

  • Kim, Minhee;Ahn, Hee-Kyung
    • Asia Marketing Journal
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    • v.22 no.1
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    • pp.61-79
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    • 2020
  • This research examines how processing type and alignability moderate the effect of product type on satisfaction (i.e., happiness). It is well known that there are two types of processing-deliberative and intuitive processing. Based on the previous literature that the intuitive processing is compatible with experiential purchases and the deliberative processing is fit with material purchase, the current research demonstrates that processing type moderates the effect of product type on happiness. Moreover, we hypothesize that alignability moderates the effect of product type on anticipated satisfaction. As expected, participants in the intuitive processing condition reported greater happiness from their experiential purchases than material purchases. However, in the deliberative processing condition, there was no significant difference between happiness levels from material and experiential purchases. Furthermore, when the attributes of choice options were presented in a non-alignable manner, participants reported greater anticipated satisfaction from experiential purchases than from material purchases. However, this difference disappeared when attributes were presented in an alignable manner. Finally, we propose 'choice process' satisfaction as a potential mediator of the moderating effect of processing type on the relationship between product type and (anticipated) satisfaction.

Trading Volume and Overpricing of Lottery-type Stocks (거래량이 복권특성 종목의 기대수익률에 미치는 영향)

  • Yong-Ho Cheon
    • Asia-Pacific Journal of Business
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    • v.14 no.1
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    • pp.113-129
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    • 2023
  • Purpose - The purpose of this study is to examine whether trading volume amplifies the extent to which lottery-type stocks are overpriced, and whether economic sentiment index explains time-variation in the magnitude of the volume amplification effect. Design/methodology/approach - We examine monthly returns on 5x5 monthly bivariate portfolios formed by lottery characteristics (measured by maximum daily return) and trading volume. In addition, we perform time-series regression tests to examine how the volume amplification effect changes in high and low economic sentiment periods, after controlling for Fama-French three factors. Findings - Our bivariate portfolio analysis shows that the overpricing of lottery-type stocks are mostly pronounced among high trading volume stocks. In contrast, for low trading volume stocks, overpricing of lottery-type stocks appears to vanish. Furthermore, the amplification effect of trading volume on overpricing of lottery-type stock is concentrated in high economic sentiment periods. Research implications or Originality - This study is the first attempt to examine whether trading volume drives lottery-type stocks' overpricing in the Korean stock market. Furthermore, our analysis unveils the time-varying nature of volume amplification effect. The results suggest that trading volume might play a important hidden role in asset pricing, opening a new line of researches in the future.

Adaptive Re-reflecting Wave Control in Plunger Type Wave Maker System: Theory

  • Park, Jae-Woong;Lee, Jin-Ho;Park, Gun-Il;Kim, Ki-Jung
    • Journal of Ship and Ocean Technology
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    • v.6 no.4
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    • pp.13-18
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    • 2002
  • Active control has been partly applied to suppress the re-reflecting waves in wave basin with plunger-type wave maker to obtain desirable waves. This limitation comes from the non-confirmable theoretical background to the control algorithm. This paper proposes control logic to overcome this drawback, based on the impulse response function for propagating waves between control input and the wave height. The performances have been verified as reasonable in practical application by comparing with the propagating wave components in numerical wave basin, using wave decomposition method. Moreover, the control logic can also give useful wave-absorbing performance after cessation of wave generation.