• 한국의류학회지
• /
• 제21권6호
• /
• pp.1021-1030
• /
• 1997

Physical variables related to the subjective evaluation of wear comfort were explored. Experimental fabrics was those used in the previous paper where subjective sensations of women's thin shirts were reported. Fabrics include 100% cotton (unfinished), 100% cotton (water repellent finished), cotton/polyester 35/65 (unfinished), cotton/polyester 35/65 (peach skin finished), 100% polyester fabric(plain), 100% polyester crepe. Among various physical properties of the experimental fabrics, heat 8E moisture transport properties and surface properties were chosen as important variables based on the regression coefficient. Especially, humidity at the microclimate in dynamic mode was highly correlated to the subjective evaluation and appeared to be a sensitive physical predictor, compared to dry thermal transmission rate or water vapor transmission rate. Surface characteristic parameters, however, did not show consistant trend in the prediction of the human's subjective sensation. Interaction between surface properties and humidity measurement was also observed.

• 반도체디스플레이기술학회지
• /
• 제6권4호
• /
• pp.53-57
• /
• 2007

In paper, We evaluated for various diode type ESD protection device using TLP measurement method. An Evaluation diode is divided to Enclosed type and Stripe type as pattern style in extensive. These diodes is split up followed factor that Anode-to-Cathod space, N+ region width, Multi type and Contact to Active space. After a TLP measurement, we can be got the Vt2, It2 by I-V characteristic values. In the results, diode of enclosed type is present relatively higher Current capability(It2) than stripe type in a same voltage conditions. And the Second-breakdown voltage(Vt2) were that Stripe type's diode higher than Enclosed type's diode as have $14{\sim}15V$. Finally we suggest the best diode design condition as ESD protection device using entire consequence.

• 한국콘크리트학회:학술대회논문집
• /
• 한국콘크리트학회 1999년도 학회창립 10주년 기념 1999년도 가을 학술발표회 논문집
• /
• pp.15-218
• /
• 1999

Concrete is the most generous, universal main structural material. There is active study for processing quality, stable quality mangement. Especially, strength is basic factor of evaluating stability of concrete building. Regaining required strength and homogeneity is very important to get self-stability in building to evaluate another characteristic. Concrete strength is important to the quality management. But, result of hardened concrete's quality test is hardly reflected to works immediately. When required strength is not enough, it could bring out safe problem, economic and administrative cost. It is pointed out that problems from strength evaluation, so early evaluation of concrete quality is required. From the trend that accelerating high quality concrete development, improving the method of quality test and early evaluation measure is urgent project. Throughout this report, it is suggested the method with use of microwave to evaluate 28-days concrete strength.

• 한국콘크리트학회:학술대회논문집
• /
• 한국콘크리트학회 1998년도 봄 학술발표회논문집(II)
• /
• pp.703-706
• /
• 1998

Primarily, to evaluate the structural condition assessment of concrete structures, percentile strength of concrete in concrete structures should be found out. This study aims to establish the evaluation techniques for concrete strength in existing concrete structures considering the concrete quality and reliability. The results are as follows ; 1. Percentile strength of concrete in concrete structures can be estimated from following strength equation. $$f_p=f_{mea} - {\lambda}_pS_s$$2. For the calibration of above percentile strength equation with proposed codes or specifications, following sample size based on ASTM E122 can be applied.

• 복식
• /
• 제56권5호
• /
• pp.163-175
• /
• 2006

Department store service is undergoing a rapidly changing social phenomena that is, the qualitative evaluation is getting more attention than the quantitative evaluation. Therefore, in this study, a standard has been prepared according to a service quality evaluation and the result has been analyzed to prepare major points for quality improvement. The differences in perception between department store consumers and department store employees were verified based on these factor categories. Also an attempt was made to reveal the relationship between satisfaction and service quality. When considering all the results of this study, the department store consumers and the department store employees perceived service quality differently from each other. The result is that the characteristics of the users and the suppliers reflect exactly as they are because of the characteristic of the distribution environment.

• Journal of Mechanical Science and Technology
• /
• 제16권9호
• /
• pp.1084-1092
• /
• 2002

The frequency dependency of Rayleigh surface wave is investigated indirectly by measuring the angular dependency of the backward radiation of the incident ultrasonic wave in two kinds of degraded specimens by scuffing or corrosion. Then, the frequency dependency is compared with the residual stress distribution or the corrosion-fatigue characteristics for the scuffed or corroded specimens, respectively. The width of the backward radiation profile increases with the increase of the variation in residual stress distribution for the scuffed specimens. In the corroded specimens, the profile width decreases with the increase of the effective aging layer thickness and is inversely proportional to the exponent, m, in the Paris' law that can predict the crack size increase due to fatigue. The result observed in this study demonstrates high potential of backward radiated ultrasound as a tool for nondestructive evaluation of subsurface gradient of material degradation generated by scuffing or corrosion.

• 한국정보디스플레이학회:학술대회논문집
• /
• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
• /
• pp.299-301
• /
• 2008

We suggest a new method to evaluate the anti-smudge performance of LCD panels. The anti-smudge performance is characterized by oleic acid contact angle. This method shows accurate and reproducible result and overcomes the difficulty of quantitative evaluation for the anti-smudge characteristic and low reliability in several proposed measurements.

• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 2003년도 춘계학술대회 논문집
• /
• pp.929-933
• /
• 2003

Internal defects of thin pressure vessel used in the power plants or the chemical plants may be created and grow due to corrosion or creep fatigue to reduce the strength and cause critical failure during operation. Therefore it is very important to detect this defect at the early stage. For this purpose, non-destructive, non-contact and highly sensitive method should be considered for on-line application. In this paper, a laser shearographic interferometer is applied to inspect circular defects and notch defects existed inside of thin pressure vessel under the presence of pressure up to 3 times of atmospheric pressure. The influences of the defect shape and size as well as the internal pressure to the characteristic pattern in the shearography fringe are investigated, and the quantitative evaluation of the defect size is tried. Also the experimental results are compared with the destructive test results to show the applicability of this method to the quantitative evaluation of internal defects in the thin pressure vessel.

• 한국주거학회:학술대회논문집
• /
• 한국주거학회 2004년도 추계학술대회 논문집
• /
• pp.183-188
• /
• 2004

In the suburbs near the capital area in Korea, many apartment house complexes are dotted that encircled by field. These apartment house complexes encircled by field, have not park and are abutting on the field, unlike large scale new town. This study is aimed to clear the characteristic of field around these apartment house complexes, consists in development the suburbs near the capital area. As a method of study we conducted greenery evaluation from view of Inhabitant by questionnaire survey. We concluded as follows: inhabitants attach importance to the nature around apartment house complex when move into that; inhabitants are satisfied and feel nature about the field; inhabitants tend to take field as a sight; inhabitants need low-rise development for harmony with field.

• 한국안전학회지
• /
• 제15권2호
• /
• pp.136-142
• /
• 2000

One of the major requirements in preventing Work-related MusculoSkeletal Disorders(WMSDs) is to know definitely what vigorous exertion requirements are contained in a job. This requires improved job analysis tools which can accurately evaluate potentially harmful stresses to the musculoskeletal system. But to simply evaluate the level of stress at a joint, or in a muscle is not enough to motivate job changes. Therefore, the development of ergonomic evaluation tools for the jobs are important to ergonomics. The main objective is compared of the results that made by the ergonomic evaluation tools (e.g., BRIEF and RULA) in actually shoes manufacturing. These were developed in the foreign. So, it is priory needed to research of the ergonomics about Korean characteristic work by physiology and biomechanics.