• Title/Summary/Keyword: movement time

Search Result 3,689, Processing Time 0.035 seconds

The momentary movement of soft contact lens by blinking : The change of movement depending on wearing time (손목에 의한 소프트콘택트렌즈의 순간적인 움직임 : 착용시간의 증가에 따른 움직임의 변화)

  • Park, Sang-Il;Lee, Youn Jin;Lee, Heum-Sook;Park, Mijung
    • Journal of Korean Ophthalmic Optics Society
    • /
    • v.12 no.1
    • /
    • pp.1-7
    • /
    • 2007
  • To investigate the momentary movement pattern of soft contact lens(SCL) depending on wearing time, eight types of soft contact lenses were worn by 10 normal subjects and the momentary movements of SCLs were estimated using by high speed camera(FASTCAM ultima 1024). When the momentary movements of SCLs in the cornea between blinkings were compared after 15 min wearing, the vertical movements of all eight SCLs were about 2 times larger than the horizontal movement but the extent of these movement difference was a function of kinds of SCLs. The momentary moving distance of SCL varied from the kinds of SCLs, which A and B lens, daily wear lens, moved significantly larger distance compared with other SCLs. The momentary movements between blinkings decreased significantly after 8hr wear of SCLs. The extents were different when SCLs were compared with each other, which the reduction range of horizontal and vertical movement was 24.6~60.0% and 20.4~94.3%, respectively. The A, B and C lenses which had relatively higher water content showed the larger movement reduction after SCL wear. This results suggest that wearing SCL for some hours decreases the movement of SCl, which can induce the change of tear flow.

  • PDF

A Study on the Children's Reading Movement in the 1920s~1930s: Focus on the Children's Library Movement and Reading Education (1920~30년대 아동 독서운동 연구 - 아동도서관 운동과 독서지도론을 중심으로 -)

  • Yeun, Keum-Sun
    • Journal of Korean Library and Information Science Society
    • /
    • v.51 no.3
    • /
    • pp.171-196
    • /
    • 2020
  • This study examined the development of the children's reading movement, focusing on the children's library establishment movement and reading guidance theory published in the Dong-A Ilbo and Chosun Ilbo in the 1920s and 30s. This paper analyzed the following contents. First, this study explored the background meaning that emphasized children's reading in the 1920s and 30s and discussions on the establishment of a children's library. In the process, this study examined the relationship between the national movement during the Japanese colonial period and children's education, and the meaning of reading at the time. Second, in this study, the development of children's library movement that was actively developed at the time and a methodology of reading education presented through the reading section were reviewed. It was this period that everyone was more interested in children's reading education than ever before. In addition, as the children's library movement was actively developed, a number of "Sonyeon Mungo" was established in various places. Meanwhile, in the reading section of the newspaper, a number of teaching methods for reading at school and at home were published, and examples were presented through advanced overseas reading education model. From the results of this analysis, it can be seen that the 1920s and 30s were the period when the children's reading movement was actively developed.

Forecasting the Time-Series Data Converged on Time PLOT and Moving Average (Time PLOT과 이동평균 융합 시계열 데이터 예측)

  • Lee, Jun-Yeon
    • Journal of the Korea Convergence Society
    • /
    • v.6 no.4
    • /
    • pp.161-167
    • /
    • 2015
  • It is very difficult to predict time-series data. This is because data obtained from the signal having a non-linear characteristic has an uncertainty. In this paper, By differentiating time-series data is the average of the past data under the premise that change depending on what pattern, and find the soft look of time-series change pattern. This paper also apply the probability variables to generalize time-series data having a specific data according to the reflection ratio of the differentiation. The predicted value is estimated by removing cyclic movement and seasonal fluctuation, and reflect the trend by extracting the irregular fluctuation. Predicted value has demonstrated the superiority of the proposed algorithm and compared with the best results by a simple moving average and the moving average.

A Study on the development of wheels' direction indicator (자동차 바퀴 방향 지시기 개발에 관한 연구)

  • Cho, Chong-Duck;Shin, Seung-Sik
    • 전자공학회논문지 IE
    • /
    • v.43 no.4
    • /
    • pp.76-82
    • /
    • 2006
  • Wheels' Direction Indicator, an electronic direction displaying system, provides a driver with information of wheels' direction in real time. The purpose of this study is to develop the system showing on LCD and LED with measuring steering wheel's movement. This system that applies a steering wheel's movement to the data process part will reduce inconvenience that confirms wheels' direction before throughout the open window before driving a car in parking lot.

Application of C-11 Gas Target Using Finite Element Method (FEM을 이용한 C-11 기체표적의 성능평가)

  • Hur M.G.;Oh H.S.;Jung H.Y.;Park S.P.;Yang S.D.
    • Proceedings of the Korean Society of Precision Engineering Conference
    • /
    • 2005.06a
    • /
    • pp.1699-1704
    • /
    • 2005
  • In this research the energy degrader, which is the most fragile part of the security of a target, has been newly designed to improve the performance of the gas target. Also, the numerical analysis of the heat movement and mechanical movement during the operation of the target has been accomplished. The heat analysis and structure analysis which are using the cooling water flow and pressure in the energy degrader and the Nastran mediocrity finite element analysis program, has been considered with the heat movement and mechanical movement according to the current capacity of proton beam which determines the production yield of the radioactive isotope. Also the possible use range has been determined, and at the same time the most suitable running condition according to the current capacity of proton beam has been suggested.

  • PDF

유한 요소법을 이용한 중소하천 유역에서의 이동호우에 대한 유출특성 분석

  • Cho, Hyeon-Kyeong;Lee, Yeung-Hwa;Choi, Yun-Yeong
    • Journal of Environmental Science International
    • /
    • v.7 no.4
    • /
    • pp.415-424
    • /
    • 1998
  • In the rainfalll-runoff relation, consideration of the spatial movement of storms is very unportant in designing a hydraulic structure or evaluating an environmental influence for land usage. Because of thins reason, this study has suggested the finite element model which consider the spatial movement of a storm and it was applied on a small river basin(Wi stream basin). In the application of the model, the basin was treated as a pivot point and the storms are simulated 10 movement in each directions. As a result, It shows that the storms moving from north to south have higher peak discharge and faster peak time than the storms moving in other directions. So these characteristics have to be considered In the designation of a hydraulic structure or evaluation of an environmental influence.

  • PDF

The Evaluation of Performance of C-11 Radio Isotope Gas Target using Finite Element Method (FEM을 이용한 C-11 동위원소 기체표적의 성능평가)

  • Oh, Hwan-Sup;Hur, Min-Goo;Park, Sang-Pil;Jung, Hyo-Jin
    • Transactions of the Korean Society of Machine Tool Engineers
    • /
    • v.15 no.3
    • /
    • pp.24-31
    • /
    • 2006
  • The energy degrader is the most fragile part of the security of a target, has been newly designed to improve the performance of the gas target. Also, the numerical analysis of the heat movement and mechanical movement during the operation of the target has been accomplished. The heat analysis and structure analysis which are using the cooling water flow and pressure in the energy degrader and the finite element analysis program, has been considered with the heat movement and mechanical movement according to the current capacity of proton beam which determines the production yield of the radioactive isotope. Also the possible use range has been determined and at the same time the most suitable running condition according to the current capacity of proton beam has been suggested.

Study on Method of Measurement for Stress-Easing Viewing Urban Greenery

  • Yamamoto, Satoshi;Iwasaki, Yutaka
    • Proceedings of the Korean Institute of Landscape Architecture Conference
    • /
    • 2007.10b
    • /
    • pp.84-88
    • /
    • 2007
  • When people recognize a landscape, they first need to see it for a definite period time. This study clarified the way green space in a landscape is recognized using eye movement analysis, and evaluated the Pffi9bility for quantifying stress-reducing effects of seeing a landscape. The results of the experiments on eye movement analysis suggest that the way of recognizing green space in a landscape may depend on a ratio of the amount of scenic greenery in a landscape, color and greenery layout. Especially, this study also suggests that the possibility of the greenery layout guiding eye movement could be verified by conducting a study on planting patterns. In addition, the results of the experiments for quantifying stress-reducing substances found that it is likely that a green space in an urban area has stress-reducing effects.

  • PDF

Monitoring Activity for Recognition of Illness in Experimentally Infected Weaned Piglets Using Received Signal Strength Indication ZigBee-based Wireless Acceleration Sensor

  • Ahmed, Sonia Tabasum;Mun, Hong-Seok;Islam, Md. Manirul;Yoe, Hyun;Yang, Chul-Ju
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.29 no.1
    • /
    • pp.149-156
    • /
    • 2016
  • In this experiment, we proposed and implemented a disease forecasting system using a received signal strength indication ZigBee-based wireless network with a 3-axis acceleration sensor to detect illness at an early stage by monitoring movement of experimentally infected weaned piglets. Twenty seven piglets were divided into control, Salmonella enteritidis (SE) infection, and Escherichia coli (EC) infection group, and their movements were monitored for five days using wireless sensor nodes on their backs. Data generated showed the 3-axis movement of piglets (X-axis: left and right direction, Y-axis: anteroposterior direction, and Z-axis: up and down direction) at five different time periods. Piglets in both infected groups had lower weight gain and feed intake, as well as higher feed conversion ratios than the control group (p<0.05). Infection with SE and EC resulted in reduced body temperature of the piglets at day 2, 4, and 5 (p<0.05). The early morning X-axis movement did not differ between groups; however, the Y-axis movement was higher in the EC group (day 1 and 2), and the Z-axis movement was higher in the EC (day 1) and SE group (day 4) during different experimental periods (p<0.05). The morning X and Y-axis movement did not differ between treatment groups. However, the Z-axis movement was higher in both infected groups at day 1 and lower at day 4 compared to the control (p<0.05). The midday X-axis movement was significantly lower in both infected groups (day 4 and 5) compared to the control (p<0.05), whereas the Y-axis movement did not differ. The Z-axis movement was highest in the SE group at day 1 and 2 and lower at day 4 and 5 (p<0.05). Evening X-axis movement was highest in the control group throughout the experimental period. During day 1 and 2, the Z-axis movement was higher in both of the infected groups; whereas it was lower in the SE group during day 3 and 4 (p<0.05). During day 1 and 2, the night X-axis movement was lower and the Z-axis movement was higher in the infected piglets (p<0.05). Overall, the movement of infected piglets was altered, and the acceleration sensor could be successfully employed for monitoring pig activity.

A Study of Costume on Gustav Klimt's Paintings (구스타프 클림트 회화에 표현된 의상에 관한 연구)

  • Jang, Sung-Eun
    • Journal of the Korean Society of Clothing and Textiles
    • /
    • v.31 no.2 s.161
    • /
    • pp.280-291
    • /
    • 2007
  • The purpose of this study is to research characteristics of costume which is expressed in Gustav Klimt's Paintings. In the end of 19th century and the beginning of 20century Vienna, considered to be the fashion Mecca after Paris, the creativity of such artists allowed the 'Anti-Fashion Movement' to set itself up against the frippery of the costume of the time. The Secession Movement received the effect of Art Nouveau and Symbolism and Klimt led of this movement as a forerunner in Vienna. Many women appealed in Klimt's Painting with unique costume which contrast to traditional fashion that period time. The characteristics of costume in his paintings are as follows. Firstly, Klimt drew in the women's costume which made by designers of Vienna Workshops, at one of motive of his work of art. Costume got a opportunity became a new art field, because there was no conceptual thinking of a fashion designer at that time. Secondly, the costume of Klimt' paintings had both anti-fashion design and elements of fashion, so he gained considerable support from leaders of high fashion who was the upper classes. Thirdly, both anti-fashion and fashion appeared in his painting at first period. Costume which made at the Vienne Workshop appealed portraits of Klimt paints at the second period. Klimt interested in Naturalism, Japonism, Orientalism and Greece style and expressed his characteristic techniques at the last period. Lastly, Klimt liberated the woman from a physical and spirit restriction through his various artistic presentations.