• Title/Summary/Keyword: Difference Means

Search Result 2,671, Processing Time 0.032 seconds

Standardization in Vessel Traffic Services(VTS) Manning

  • Redfern, Dr-A
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • 1995.11a
    • /
    • pp.11-14
    • /
    • 1995
  • The question of recruitment qualification and standardization of VTS operators is reviewed through comparison with Air Traffic Control(ATC) The comparison reveals greater difference between the two services than commonality. While ATC enjoys a high degree of uniformity nationally and internationally the provision of VIS is dictated by varying local needs. The variety of those needs makes standardization of VTS operation a questionable short term objective. The paper concludes problem solving techniques such as the formal appreciation provide means of matching recruitment and qualification to local requriements.

Estimation of surface tension of liquid alloys under different oxygen partial pressure

  • Min, Sun-Gi;Lee, Jun-Ho
    • Proceedings of the Korean Institute of Surface Engineering Conference
    • /
    • 2008.11a
    • /
    • pp.101-101
    • /
    • 2008
  • The effect of oxygen partial pressure on the surface tension data of liquid alloys was investigated by means of comparing the calculated data and the measured one. Two binary alloy systems were chosen to observe the dependence of oxygen adsorption behavior on different oxygen partial pressures. It was found that the difference between the computed values and the experimental of the surface tension was within the range of maximum 10%.

  • PDF

Dyeing of high Light Fastness Solvent Dyes on Polyester Fiber (고 일광견뢰도 Solvent 염료의 폴리에스터 염색에 관한 연구)

  • 최재홍
    • Textile Coloration and Finishing
    • /
    • v.15 no.3
    • /
    • pp.176-184
    • /
    • 2003
  • This research aimed at scrutinizing the dyeability of some solvent dyes on polyester and their light fastness to be exploited as a breakthrough in light fastness where utmost fastness is required such as ultramicrofibers and industrial markets. Dyeability on polyester was mainly evaluated by HT exhaust dyeing according to the general procedure. Light fastness has been tested by a preliminary UV test followed by HT xenon test in compliance with standard SAE J1885, 224 KJ. Fading has been determined quantitatively by evaluating the shade deviation and the strength difference between unexposed and exposed samples by means of CIELab values.

A Study of Phonation Types of the Plosives in Bahasa Indonesia (인도네시아어의 파열음의 발성유형 연구)

  • Chun Taihyun;Park Hansang
    • MALSORI
    • /
    • no.52
    • /
    • pp.15-48
    • /
    • 2004
  • The present study investigates phonation types of the plosives in Bahasa Indonesia in terms of VOT, F0, durations of intervocalic closure, the preceding vowel, and the following vowel. The results showed that two speaker groups have distinct phonation types. Speaker Group I was characterized by a short voice lag for voiceless plosives and a considerable amount of voice lead for voiced ones. Speaker Group II was characterized by a short lag for both voiceless and voiced plosives. Although both groups showed a significant difference in F0 and the durations of individual segments between voiceless and voiced plosives, they had a remarkable difference in the temporal structure of the segments. Speaker Group I had temporal compensation between the intervocalic closure and the surrounding vowels across voice, such that the shorter the intervocalic closure the longer the surrounding vowels, while Speaker Group 2 didn't. This means that there are two different phonation type systems within a language.

  • PDF

User Evaluation of Common Spaces in Office Building - Focused on Universal Design - (오피스 건물의 공용공간 디자인에 대한 사용자 평가 - 유니버설 디자인을 중심으로 -)

  • Oh, Chan-Ohk
    • Korean Institute of Interior Design Journal
    • /
    • v.21 no.1
    • /
    • pp.20-29
    • /
    • 2012
  • The study was intended to evaluate common spaces of office building in view point of universal design. The common spaces were access road, main entrance, parking lot, corridor, and restroom. Two office buildings in Centum city of Busan were evaluated by their workers, each 100 ones. The check list for evaluating them consisted of 36 universal design elements which related to five common spaces. First, there were many universal design elements which need to be improved. Second, among five common spaces, restroom has the most elements to be rated low. First of all, at least one restroom for wheelchair should be provided each floor. Third, even though both of two office buildings were recently built, there were significant difference between their users' evaluations. This implies that the concept of universal design is not applied to office buildings well. Fourth, there were significant difference among users' evaluations according to age, especially in case of design related elements. This means that users' age is an important factor to be considered.

  • PDF

An analysis of a statistical difference of acoustic Parameters' distribution between normal voice and pathological voice (병적 음성과 정상 음성의 음향학적 파라미터 분포에 대한 통계적 분석)

  • 김용주;권순복;김기련;신민철;조철우;왕수건
    • Proceedings of the IEEK Conference
    • /
    • 2001.06d
    • /
    • pp.249-252
    • /
    • 2001
  • The most basic means of communication among humans is a voice. Without speaking of voice technologies, we found it is important and convenient to use a voice in everyday life. But. in consideration to speech recognition systems, we can't always desire a normal voice input as input signal to the system. Generally speaking. a pathological voice as against a normal which is a voice with a problem in the larynx. could be also special case of input voice. Of course, but the distortion of a speech signal by environmental effects i.e., noise or transmission channel was a raised problem. we will take up a pathological voices with laryngeal disease which is essential distortion factor in voice. Also, we are to find out the difference of acoustic parameters distribution between normal and pathological voice by a statistical method in our research.

  • PDF

The Effect of Differential Medial and Lateral Midsole Hardness on Rearfoot Movement (운동화 후족의 내외측 경도차에 따른 후족 제어의 효과)

  • Bu, Jin-Hu;Lee, Dong-Chun
    • Journal of the Ergonomics Society of Korea
    • /
    • v.20 no.1
    • /
    • pp.63-72
    • /
    • 2001
  • Rearfoot control can be defined as the relative ability of a shoe to limit the amount of subtalar joint pronation immediately following footstrike. A normal amount of pronation provides a means of decreasing peak forces experienced by the leg, but excessive pronation of the foot can be arised its injures. The purpose of this study is to compare amount of pronation according to a difference between medial and later hardness of shoe midsole for better design of running shops. The experiment is examined for 7 running shoes. 8 males. to measure the Achilles tendon angle and rearfoot angle using high speed camera. The results is conducted that the changes of Achilles tendon angle significantly differ at each test shoe with increased running speed. And, a difference between medial and lateral hardness of midsole affects rearfoot motion of runner. The displacements of maximal Achilles tendon angle described a amount of pronation motion is decreased when medial hardness of midsole is large more than lateral.

  • PDF

The Changes in Psychopathological Behavior of Schizophrenics in the Ward (정신분열증환자 간호에 대한 임상적 고찰)

  • 강흥순
    • Journal of Korean Academy of Nursing
    • /
    • v.3 no.1
    • /
    • pp.1-4
    • /
    • 1972
  • A study designed to provide effective nursing care for schizophrenic patient was carried out to 22 patients who were admitted to the psychiatric in-patient service, St. Malays Hospital, Catholic Medical Center. The main purpose of the study was to provide effective means of discriminating the effects of nursing care for schizophrenic patients. The experimental group sampled consisted of 10 male and female patients who have been given patient-centered nursing care while the control group consisted of 12 male and female patients who have been given only routine care. The administration of the WBI manual in both groups obtained the changes in the psychopathological behavior of them. The result were found to be as follows. 1. The greater number of the patient in both groups were below 30 years of age (70%). 2. Uptill 15 days after admission there was no difference between the change of the psychopathological behavior the subject group and that of the control. 3. There as a difference between the change of the psychopathological behavior of the subject group and that of the control uptill 30 days after. admission(p<0.08).

  • PDF

Clustering of 2D-Gel Images

  • Hur, Won
    • 한국생물공학회:학술대회논문집
    • /
    • 2003.10a
    • /
    • pp.746-749
    • /
    • 2003
  • Alignment of 2D-gel images of biological samples can visualize the difference of expression profiles and also inform us candidates of protein spots to be further analyzed. However, comparison of two proteome images between case and control does not always successfully identify differentially expressed proteins due to sample-to-sample variation. Because of poor reproducibility of 2D-gel electrophoresis, sample-by-sample variations and inconsistent electrophoresis conditions, multiple number of 2D-gel image must be processed to align each other to visualize the difference of expression profiles and to deduce the protein spots differentially expressed with reliability. Alignment of multiple 2D-Gel images and their clustering were carried out by applying various algorithms and statistical methods. In order to align multiple images, multiresolution-multilevel algorithm was found out to be suitable for fast alignment and for distorted images. Clustering of 12 different images implementing a k-means algorithm gives a phylogenetic tree of distance map of the proteomes. Microsoft Visual C++ was used to implement the algorithms in this work.

  • PDF

Measurement of Infinitesimal Delaminaton Thickness by Echo Amplitude of Ultrasonic Wave (초음파의 에코 높이를 이용한 미소(微小) 박리(剝離) 두께 측정에 관한 연구)

  • Han, E.K.;Jang, K.Y.;Hwang, B.I.;Lee, B.S.;Park, I.G.
    • Journal of the Korean Society for Nondestructive Testing
    • /
    • v.13 no.1
    • /
    • pp.21-28
    • /
    • 1993
  • If the infinitesimal delamination exists and the two waves can hardly be distinguished from each other on account of being much closer, we cannot measure the thickness of delamination by the time difference method. On this study, we calculated the thickness of infinitesimal delamination model by means of measuring echo height due to the deflection of material particles and utilized Newton Ring for optical measurement as a delamination model. From the result of Newton Ring expressed in the delamination model, we can calculate the infinitesimal delamination thickness up to $0.2{\sim}0.3{\mu}m$ due to the difference of acoustic impedance by the ratio of the echo height to the total reflection.

  • PDF