• 한국멀티미디어학회논문지
• /
• 제15권1호
• /
• pp.87-92
• /
• 2012

무선 센서 네트워크는 실시간으로 객체에 대한 정보를 수집하기 위한 기술로 짧은 시간에 많은 양의 데이터가 지속적으로 발생되는 특성을 갖고 있다. 센서로부터 획득되는 많은 양의 데이터 스트림을 효과적으로 처리하기 위해서는 데이터 간의 관계를 정의하여 분석, 사용자가 주목할 만한 상황, 즉 센서 데이터들 중 이상 데이터가 포함되어 있는 것을 발견하는 것이 필수적이라 할 수 있다. 본 논문에서는 센서 데이터 스트림을 효과적으로 처리하기 위해 ECA 규칙을 사용하여 의미있는 데이터를 구성하고, 이를 통해 보다 실용적인 실시간 모니터링 시스템을 제안한다.

• Journal of Preventive Medicine and Public Health
• /
• 제27권4호
• /
• pp.793-805
• /
• 1994

Investigating the existence of volume-outcome relationships for specific disease groups relates directly to the policy issue of whether, and how, specific inpatient services should be regionalized. This study examined whether medical costs and lengths of stay as outcomes were affected by changes in volume within hospitals. Based on the claims data obtained from National Federation of Medical Associations, each six disease categories from medical and surgical conditions were selected and 29,720 cases from 1,266 hospitals were analyzed. Main findings of the research can be summarized as follows: 1. Analyzing volume and cost per case relationship, tonsillectomy class 1, hernia procedure class 0, appendectomy and cesarean section class 0,1 in surgical conditions showed negative relationship significantly. In cases of medical conditions, costs per case in respiratory neoplasm class 2, COPD class 1, 2, digestive malignancy were also related to volume negtively. 2. Comparing volume with length of stay per case, lens procedure class 0, hernia procedure class 0, appendectomy class 0,1, cesarean section class 1 in surgical conditions showed negative relationships significantly. In medical conditions, volume of respiratory neoplasm class 2, COPD class 1,2, digestive malignancy class 0 were associated with negatively. 3. Within same disease categories, changes in cost and length of stay per case to volume were more remarkable in severe cases. These results suggested a significant inverse relationship between disease cases and cost, length of stay per case as outcome variables.

• 한국생활과학회지
• /
• 제18권6호
• /
• pp.1267-1276
• /
• 2009

The purpose of this study is to classify breast types and to inquire about characteristics depending on breast types of women subjects in their twenties. We researched size items affecting breast volume and regression equations for the prediction of breast volume, and thereby, we will be able to provide some basic data, useful to the development of the brassiere depending on breast types. As a result of categorizing the types of three breast types, "type 1" was characterized by big and greatest protrusion of the breast with large breast volume and a large bust, while "type 2" was characterized by flat breasts with the least breast volume and least bust, and "type 3" was characterized by breast location apart from the center front line. Breast volume is significant in establishment of the brassiere cup depending on breast type. Five items such as, the circumference of the breast, the length of the upper breast, the depth of the breast point, the length of the shoulder point-breast point, and the length of the inferior breast were extracted through regression equations for breast volume.

• 대한가정학회지
• /
• 제49권5호
• /
• pp.1-10
• /
• 2011

To provide the basic data to manufacture superior brassiere, this study was analyzed the evaluation of wear sensation of brassiere and the satisfaction of breast type by breast circumference and volume of 182 twenties-aged women. The results were as follows: First, it was reliable to set up the cup size of brassiere by using the breast circumference. Hemispherical breast was the same as cone-shaped breast in breast classification by breast circumference and volume. Second, the breast sizes were able to classify into under 200cc, 200~300cc, 300~400cc, and over 400cc by volume, but measuring the volume was more difficult than measuring the breast circumference. Last, there were correlations between breast circumference and breast volume by breast type. And there were differences on improvement, brassiere size, and the satisfaction of breast type by breast circumference and volume. This results will give basic informations for brassiere design that reflects breast type according to breast circumference and volume for functional brassiere.

• Ocean and Polar Research
• /
• 제24권2호
• /
• pp.147-152
• /
• 2002

Seasonal and interannual variation of volume transport through the La-Perouse Strait were estimated using the difference of sea level observed at Krillion of Sakhalin, Russia, and Wakkanai of Hokkaido, Japan, during the period of 1975-1988. Historical sea level measurements between Russian and Japanese tide gauge data were normalized using an independent direct volume transport measurement. Volume transport from the East Sea (Sea of Japan) to the Sea of Okhotsk varied from -0.01 to 1.18 Sv with an annual mean value of 0.61 Sv. Monthly water transport rates showed a unimodal distribution with its maximum occurring in summer (August) and minimum in winter (December-February). The annual mean volume transport varied from 0.2 to 0.8 Sv during the period of 1975-1988 with the maximum variance of 0.6 Sv.

• 대한의용생체공학회:의공학회지
• /
• 제11권2호
• /
• pp.195-202
• /
• 1990

The hypothesis of asymmetric resistance to explain the phenomenon of lung hyperinflation (LHI) during hlgh frequency ventilation (HFV) was quantitatively studied. LHI was predicted by modeling the ism-volume pressure-flow (IVPF) data from 5 human subjects using the empirical Rohrer's equation. Non-steadiness during HFV was compensated by em- ploying recently proposed volume-frequency diagram. Tidal volume and ventilation frequency were 100 ml and 20 Hz, respectively. Airflow pattern was a symmetric sinusoid. The predic- tion results of mean pressure drop across the airways were averaged for those 5 subjects, and compared with zero by one-sided student's t-test. A marginally significant (P<0.1) increase in mean pressure drop was observed during HFV at low lung volumes (below FRC) , which could increase mean lung volume up to one liter When the lung volume was above FRC, no significant LHI (P >0.25) was resulted. LHI seemed to be inversely related to the lung volume. These results recommend to clinically apply HFV only at lung volumes above FRC.

• KSBB Journal
• /
• 제10권4호
• /
• pp.358-369
• /
• 1995

A mathematical model using local thermodynamic equilibrium isotherms for adsorption in encapsulated adsorbent is proposed in order to optimize the design parameters in situ bioproduct separation process. The model accurately follows the experimental data on the adsorption of berberine, secondary metabolite produced in Thaictrum rugosum plant cell culture. The adsorption rate on encapsulated adsorbent is compared with that on alginate-entrapped adsorbent. The result shows that the higher loading capacity in encapsulated adsorbent is mainly due to the increase in the maximum solid phase concentration. Based on the adsorption rate and loading capacity, the encapsulated adsorbent would be more useful than the entrapped adsorbent when used in situ bioproduct separation process. Design parameters in situ bioproduct separation process, such as the size of the capsule, membrane thickness, the ratio of capsule volume to bulk volume, the ratio of single capsule volume to total capsule volume and the adsorbent content in the capsule, are evaluated by using the model. The ratio of single capsule volume to total capsule volume is the most effective parameter for adsorption of berberine on encapsulated adsorbent.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2001년도 하계종합학술대회 논문집(5)
• /
• pp.77-80
• /
• 2001

In this paper, we devised volume pulse detection system which can quantitatively represent a artery elasticity for oriental clinic. Volume pulse wave detecter system consist of transducer which has IRLED-photodiode detecter, temperature sensor and filter and preprocessing circuits, data conversion and serial communication parts, and computer system. The high-pass filter are detect volume pulse wave and lowpass filter detect tissue thickness. The detected volume pulse wave are normalized by tissue thickness value with a division process. As the result of experiment, we can detect normalized volume pulse wave with effectively.

• 무역학회지
• /
• 제45권5호
• /
• pp.75-89
• /
• 2020

The purpose of this paper was to analyze the trend of container volume using the Seasonal Autoregressive Intergrated Moving Average (SARIMA) model. To this end, this paper used monthly time-series data of the East Sea Rim from 2001 to 2019. As a result, the SARIMA(2,1,1)12 model was identified as the most suitable model, and the superiority of the SARIMA model was demonstrated by comparative analysis with the ARIMA model. In addition, to confirmed forecasting accuracy of SARIMA model, this paper compares the volume of predict container to the actual volume. According to the forecast for 24 months from 2020 to 2021, the volume of containaer increased from 60,100,000Ton in 2020 to 64,900,000Ton in 2021

• 인터넷정보학회논문지
• /
• 제15권2호
• /
• pp.33-39
• /
• 2014

무선방송환경에서 서버가 클라이언트에게 데이터를 전송하는 방식은 다음과 같다. 서버는 클라이언트들이 원하는 데이터 정보를 정리하고, 데이터를 방송주기에 1차원 배열 형태로 전송한다. 클라이언트는 서버에게 전송받은 데이터를 청취하고 필요한 결과 값만을 사용자에게 반환한다. 최근 위치기반 서비스를 이용하는 사용자가 증가하고 객체 수의 증가 및 데이터가 대용량으로 변화되고 있다. 무선방송환경에서 대용량 데이터는 클라이언트의 질의처리시간을 증가시킬 수 있다. 따라서 우리는 무선방송환경에서 주어진 데이터를 효율적으로 스케줄링할 수 있는 클라이언트 기반의 데이터 스케줄링 (Client based Data Scheduling; CDS)을 제안한다. CDS는 맵을 분할하고 분할된 그리드 내에 객체 수 및 객체의 데이터 크기를 고려하여 각 그리드마다 객체들의 총 데이터 크기의 합을 계산한다. 각 그리드 (영역)별 객체들의 총 데이터 크기와 클라이언트 수를 고려한 hot-cold 기법을 적용하여 데이터를 스케줄링 한다. 실험을 통하여 CDS가 기존의 기법보다 클라이언트들의 평균 질의처리시간을 줄이는 것을 확인한다.