• Title/Summary/Keyword: Fundamental Factors

Search Result 1,288, Processing Time 0.028 seconds

A Study on the application of ergonomic information within the thought of design semantics (디자인 의미론적 사고에서의 인간 공학적 정보 적용에 관한 연구)

  • Yoon, Yeong
    • Archives of design research
    • /
    • v.21
    • /
    • pp.123-136
    • /
    • 1997
  • The work of design needs not only a lot of scientific information, but also a artistic sensitivity. Designers require abundant imagination to translate the information of the design, into the Gestaltung. Particularly, the translation of ergonomic information into the elements and grammar of the Gestaltung needs an interface. In order to consider the theoretical possibility for this, a view of fundamental notions, the function of design semantics and ergonomic problems in the design process were analyzed. The purpose of this study is the exploration and relevance of the theoretical model for human factors and design semantics, to see if they could be harmonized as a system of a new design method.

  • PDF

Analysis of the relationship between regulation compliance and occupational injuries - Focusing on logistic and poisson regression analysis - (규제 순응도와 산업재해 발생 수준간의 관계 분석 - 로지스틱 회귀분석과 포아송 회귀분석을 중심으로 -)

  • Rhee, Kyung-Yong;Kim, Ki-Sik;Yoon, Young-Shik
    • Journal of the Korea Safety Management & Science
    • /
    • v.15 no.2
    • /
    • pp.9-20
    • /
    • 2013
  • OSHA(Occupational Safety and Health Act) generally regulates employer's business principles in the workplace to maintain safety environment. This act has the fundamental purpose to protect employee's safety and health in the workplace by reducing industrial accidents. Authors tried to investigate the correlation between 'occupational injuries and illnesses' and level of regulation compliance using Survey on Current Status of Occupational Safety & Health data by the various statistical methods, such as generalized regression analysis, logistic regression analysis and poison regression analysis in order to compare the results of those methods. The results have shown that the significant affecting compliance factors were different among those statistical methods. This means that specific interpretation should be considered based on each statistical method. In the future, relevant statistical technique will be developed considering the distribution type of occupational injuries.

Fundamental Study of the Behavior of Thermoelectric Module on Concrete Structure (콘크리트 구조물에서의 열전모듈 거동에 관한 기초연구)

  • Lim, Chisu;Lee, Jaejun
    • International Journal of Highway Engineering
    • /
    • v.17 no.5
    • /
    • pp.33-38
    • /
    • 2015
  • PURPOSES : The purpose of this paper is to investigate the application of thermoelectric technology to concrete structures for harvesting solar energy that would otherwise be wasted. In various fields of research, thermoelectric technology using a thermoelectric module is being investigated for utilizing solar energy. METHODS: In our experiment, a halogen lamp was used to produce heat energy instead of the solar heat. A data logger was used to record the generated voltage over time from the thermoelectric module mounted on a concrete specimen. In order to increase the efficiency of energy harvesting, various factors such as color, architecture, and the ability to prevent heat absorption by the concrete surface were investigated for the placement of the thermoelectric module. RESULTS : The thermoelectric module produced a voltage using the temperature difference between the lower and upper sides of the module. When the concrete specimen was coated with an aluminum foil, a high electric power was measured. In addition, for the power generated at low temperatures, it was confirmed that the voltage was generated steadily. CONCLUSIONS: Thermoelectric technology for energy harvesting can be applied to concrete structures for generating electric power. The generated electricity can be used to power sensors used in structure monitoring in the future.

Determination of Soil Sample Size Based on Gy's Particulate Sampling Theory (Gy의 입자성 물질 시료채취이론에 근거한 토양 시료 채취량 결정)

  • Bae, Bum-Han
    • Journal of Soil and Groundwater Environment
    • /
    • v.16 no.6
    • /
    • pp.1-9
    • /
    • 2011
  • A bibliographical review of Gy sampling theory for particulate materials was conducted to provide readers with useful means to reduce errors in soil contamination investigation. According to the Gy theory, the errors caused by the heterogeneous nature of soil include; the fundamental error (FE) caused by physical and chemical constitutional heterogeneity, the grouping and segregation error (GE) aroused from gravitational force, long-range heterogeneous fluctuation error ($CE_2$), the periodic heterogeneity fluctuation error ($CE_3$), and the materialization error (ME) generated during physical process of sample treatment. However, the accurate estimation of $CE_2$ and $CE_3$ cannot be estimated easily and only increasing sampling locations can reduce the magnitude of the errors. In addition, incremental sampling is the only method to reduce GE while grab sampling should be avoided as it introduces uncertainty and errors to the sampling process. Correct preparation and operation of sampling tools are important factors in reducing the incremental delimitation error (DE) and extraction error (EE) which are resulted from physical processes in the sampling. Therefore, Gy sampling theory can be used efficiently in planning a strategy for soil investigations of non-volatile and non-reactive samples.

An experimental study on the oriented mechanical properties of aluminum micro thin foil material (알루미늄 마이크로 박판소재의 방향성에 관한 실험적 연구)

  • Lee H. J.;Lee N. K.;Choi S.;Lee H. W.;Choi T. H.;Hwang J. H.;Kwag D. G.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
    • /
    • 2005.10a
    • /
    • pp.295-298
    • /
    • 2005
  • This paper is concerned with the precision material property measurement of a micro metal thin foil that is used in MEMS technology. Since these MEMS components require great precision and accuracy, evaluation of reliability such as the lift cycle endurance test, impact test, and residual stress test is necessary for these components. However, in practice, real reliability tests are not easy to perform due to consideration of various factors. Rather than actual testing, it would be much easier to evaluate the reliability of components by the analytical approach. Although the analytical method is utilized by software tools, it is obviously necessary to acquire fundamental properties of materials through real test methods. In this paper, the oriented mechanical properties of aluminum thin foil are measured by nano scale material property measurement system.

  • PDF

Apoplexy and Hyungsang Medicine (중풍의 형상의학적 고찰)

  • Jung, Haeng-Gyu;Lee, Yong-Tae
    • Journal of Physiology & Pathology in Korean Medicine
    • /
    • v.19 no.3
    • /
    • pp.573-579
    • /
    • 2005
  • The followings are the conclusions drawn from the clinical cases of apoplexy; The main cause of apoplexy is the deficiency of both Jung and Ki. dam typed persons are stricken with paralyses because of the insufficiency of the kidney water. On the other hand, bangkwang typed persons' apoplexy comes from the deficiency of Ki and dump-phlegm. The prevention of apoplexy is very important so that porpe medical care should be taken at the appearance of premonitory symptoms like vertigo, dim sight tinnitus, stiff neck, numbness and others. It appears very reasonable both clinically and pathologically that Li dongyuen classified the apoplexy in to three groups : the first group is apoplexy involving meridians ; the second. involving Bu ; the third, involving Jang. The accurate diagnosis of apoplexy regulates com prehension consideration of four factors configuration color, pulse and symptoms and distinction from the similar diseases. Apoplexy is the up wand floating of Yaug in deficiency due to the deficiency of genuine Yim. In its early stages it should be treated by eliminating the excess in the upper pant. In the lower pant becomes the fundamental treatment.

Optimizing the design factors of the head-fed type combine(I) -Estimation of the threshing drum torque curve- (자탈형 콤바인 탈곡부 설계요인(設計要因)의 적정화(適正化)를 위한 연구(I) -급동축(扱胴軸) 토오크 파형의 추정(推定)-)

  • Nam, S.I.;Chung, C.J.;Hosokawa, A.
    • Journal of Biosystems Engineering
    • /
    • v.12 no.3
    • /
    • pp.42-49
    • /
    • 1987
  • The threshing action of the head-fed type threshing unit occurs mainly by the impact between threshing tooth and grains. It may be therefore the most fundamental step to calculate the time and order of the occurrance of impact by the tooth for predicting the performance of threshing unit. The threshing teeth arrangement was defined by length and diameter of threshing dram, number of spiral arrays, number of threshing teeth by kind per one spiral array, number of windings of spiral array around the threshing drum, delay angle of impact line. The linear equations for locus of left and right margin of paddy bundle, spiral array, impact line on the development figure of the threshing drum were expressed by fastors of the threshing teeth arrangement. In the computer program, the teeth which inflict impact were searched successively along the impact line. Searching range and impact condition were defined by the relation between four linear equations. If the impacting tooth was found, time and the kind of threshing tooth was derived from the coordinate of the threshing tooth. At this time the unit torque curve was accumulated on the array of computer memory. At last the completed torque curve of threshing drum shaft was described on the computer screen. Remarkably the peack valae and fluctuation of torque curve was decreased by adopting the delay angle of impact line.

  • PDF

The Effect of Hair Style for Impression Formation (Hair Style이 인상형성(印象形成)에 미치는 영향(影響))

  • Yoon, So-Young;Yoo, Tai-Soon
    • Journal of Fashion Business
    • /
    • v.5 no.3
    • /
    • pp.73-84
    • /
    • 2001
  • The purpose of this study is to apply fundamental data of impression formation research by analysing and observing the various facial image that can be effected from hair style as well as be helpful for choosing suitable hair style for T.P.O in modern society. This study targeted 305 college women in Daegu and Gyung-book area. Hair Style Image Scale(HSIS)was used the scale of seven point modified the S-D(Semantic Differential) method. The analysis of impression formation effect of hair style using SPSS WIN package have completed from the principal component analysis by Varimax perpendicular rotation method and ANOVA was used to recognize the difference in impression formation according to hair style change. In the case of statistical difference was appeared, LSD post-verification was applied for that. The conclusions of this study is as followed ; 1. The factors of impression formation effected by hair style were classified as goodwill factor, refinement factor, elegance factor and individuality factor. 2. In terms of goodwill factor, long hair style showed highest level and short cut hair, bobbed hair in an order. In refinement factor, there was no difference between short cut hair and bobbed hair and both of them was higher than long hair. In elegance factor, long hair was highest and bobbed hair was lowest. In individuality factor, short cut hair and bobbed hair higher than long hair and no difference between short cut hair and bobbed hair.

  • PDF

A Study on the early 20s Chinese Women's lower Body Types - Focused on the Residents in Beijing and Shanghai -

  • Park, Jin-Young;Sohn, Hee-Soon
    • Journal of Fashion Business
    • /
    • v.10 no.3
    • /
    • pp.100-116
    • /
    • 2006
  • The purpose of this study was provide for the useful fundamental data by developing an lower appeal sizing system according to body types for early 20s Chinese women. The subjects were 348 women whose ages were between 19 and 24 to live in Beijing and Shanghai, China. Out of total, 341 women with no abnormal numbers were taken as the sample of research. This study was to characterize lower body type of the Chinese women in their early 20s by classifying them into groups according to drop measurement suggested by GB. This study investigated body types of the Chinese women in their early 20s depending upon regions (Beijing and Shanghai) according to each factor. This study made use of 46 kinds of indirect measures from June 23, 2004 to August 7, 2004. SPSS WIN 13.0 Program was used. And, correlation analysis, factor analysis, ANOVA(t-test and F-test) and duncan's multiple test, etc were done. The average of the early 20s Chinese women's stature is 160.0cm, waist circumference 66.4cm, hip circumference 89.8cm, weight 52.1kg. The result of analysis about the early 20s Chinese women's lower body size which are total 62 items come to 6 factors. The Chinese women in their early 20s were divided into 3 groups depending upon waist circumference and drops of hip circumference.

Anodic Oxidation Treatment Methods of Metals (금속의 양극산화처리 기술)

  • Moon, Sungmo
    • Journal of Surface Science and Engineering
    • /
    • v.51 no.1
    • /
    • pp.1-10
    • /
    • 2018
  • Anodic oxidation treatment of metals is one of typical surface finishing methods which has been used for improving surface appearance, bioactivity, adhesion with paints and the resistances to corrosion and/or abrasion. This article provides fundamental principle, type and characteristics of the anodic oxidation treatment methods, including anodizing method and plasma electrolytic oxidation (PEO) method. The anodic oxidation can form thick oxide films on the metal surface by electrochemical reactions under the application of electric current and voltage between the working electrode and auxiliary electrode. The anodic oxide films are classified into two types of barrier type and porous type. The porous anodic oxide films include a porous anodizing film containing regular pores, nanotubes and PEO films containing irregular pores with different sizes and shapes. Thickness and defect density of the anodic oxide films are important factors which affect the corrosion resistance of metals. The anodic oxide film thickness is limited by how fast ions can migrate through the anodic oxide film. Defect density in the anodic oxide film is dependent upon alloying elements and second-phase particles in the alloys. In this article, the principle and mechanisms of formation and growth of anodic oxide films on metals are described.