• Title/Summary/Keyword: time-consistency

Search Result 819, Processing Time 0.028 seconds

Consistency of PPP GPS and strong-motion records: case study of Mw9.0 Tohoku-Oki 2011 earthquake

  • Psimoulis, Panos;Houlie, Nicolas;Meindl, Michael;Rothacher, Markus
    • Smart Structures and Systems
    • /
    • v.16 no.2
    • /
    • pp.347-366
    • /
    • 2015
  • GPS and strong-motion sensors are broadly used for the monitoring of structural health and Earth surface motions, focusing on response of structures, earthquake characterization and rupture modeling. Several studies have shown the consistency of the two data sets within at certain frequency (e.g., 0.03

The Evaluation of Drainage Characteristics Using a New Drainage Tester (새로운 탈수측정 설비를 이용한 탈수 특성 평가)

  • 김용식;원종명
    • Journal of Korea Technical Association of The Pulp and Paper Industry
    • /
    • v.32 no.3
    • /
    • pp.1-9
    • /
    • 2000
  • The MDDA (Modified Dynamic Drainage Analyzer) was developed to evaluate the drainage characteristics on paper machine. The initial forming vacuum velocity was decreased with the increase of stock consistency and there were no significant effects of the applied vac-uum. On the other hand the initial forming drainage velocity was rapidly decreased with the increase of stock consistency above the 0.35 bar of applied vacuum. The final drainage time and wet web permeability showed similar trends under 0.075% consistency but increased rapidly at the higher consistencies. SFR(Specific Filtration Resistance) and drainage obtained for different vacuum level applied and deposited weights measured by using MDDA showed the linear relationship.

  • PDF

A Data-Consistency Scheme for the Distributed-Cache Storage of the Memcached System

  • Liao, Jianwei;Peng, Xiaoning
    • Journal of Computing Science and Engineering
    • /
    • v.11 no.3
    • /
    • pp.92-99
    • /
    • 2017
  • Memcached, commonly used to speed up the data access in big-data and Internet-web applications, is a system software of the distributed-cache mechanism. But it is subject to the severe challenge of the loss of recently uncommitted updates in the case where the Memcached servers crash due to some reason. Although the replica scheme and the disk-log-based replay mechanism have been proposed to overcome this problem, they generate either the overhead of the replica synchronization or the persistent-storage overhead that is caused by flushing related logs. This paper proposes a scheme of backing up the write requests (i.e., set and add) on the Memcached client side, to reduce the overhead resulting from the making of disk-log records or performing the replica consistency. If the Memcached server fails, a timestamp-based recovery mechanism is then introduced to replay the write requests (buffered by relevant clients), for regaining the lost-data updates on the rebooted Memcached server, thereby meeting the data-consistency requirement. More importantly, compared with the mechanism of logging the write requests to the persistent storage of the master server and the server-replication scheme, the newly proposed approach of backing up the logs on the client side can greatly decrease the time overhead by up to 116.8% when processing the write workloads.

RHEOLOGICAL CONSISTENCY OF CONCENTRATED WATER-IN-OIL EMULSION

  • Park, C-I.;Yang, J-C.;Cho, W-G.;S-H. Kang
    • Journal of the Society of Cosmetic Scientists of Korea
    • /
    • v.24 no.3
    • /
    • pp.129-133
    • /
    • 1998
  • We have studied a relationship between the pattern of complex modulus change versus internal phase volume ratio and the rheological consistency of concentrated W/O emulsions with Magnesium Sulfate in the range 0.0 to 0.5 wt% and with different oil polarities, respectively. The rheological consistency with time of concentrated W/O emulsion was checked using Fudoh Rheometer and the coalescence of deformed water droplets was examined using polarized light microscope(LEICA DMRP). To find the pattern of complex modulus change of the concentrated emulsions versus internal phase volume ratio, the effect of varying water phase volume fraction from 0.78 up to 0.85 on viscoelastic measurements was investigated using rotational rheometer (HAAKE Rheostress RS 50). The rheological consistency was mainly destroyed by the coalescence of the deformed water droplets. The greater the increase of complex modulus was, the less coalescence occurred and the more consistent the concentrated emulsions were. And the pattern of complex modulus increase versus volume ratio has been explained with the resistance to coalescence of the deformed interfacial film of water droplets in concentrated W/O emulsion.

  • PDF

Evaluation of KDSQ-C's Reliability and Validity between the Subject Elderly and Caregiver (KDSQ-C의 대상노인과 보호자 측정 간 신뢰도와 타당도 평가)

  • Lee, In Sook;Lee, Kwang Ok;Ko, Young
    • Research in Community and Public Health Nursing
    • /
    • v.23 no.4
    • /
    • pp.446-450
    • /
    • 2012
  • Purpose: This study is exploratory research to check the survey instrument KDSQ-C used to measure cognition for agreement between the elderly and their caregivers. Methods: Elderly persons from 170 families, who are aged over 65, have never been diagnosed with dementia, and who have caregivers in S City and K City were randomly selected by their nurses. A survey was conducted in the time from September to November, 2009 through personal interviews using a questionnaire. Results: In terms of consistency among items, there was high consistency (0.813) in the responses regarding complex task competence for the statement 'it is hard to reach a destination alone with public transportation'. There was relatively low consistency (0.63) in the responses regard memory for the statement 'they forget an appointment'. When the subject elderly and caregiver live together, as when their children or spouses responded, consistency was greater than when the caregiver lived in a different home. Conclusion: KDSQ-C showed high agreement in measurement between the subject elderly and their caregivers, demonstrating that it can be used as a measurement scale for cognition which can be directly applied to the subject elderly.

Formal Definition and Consistency Analysis of Feature-Oriented Product Line Analysis Model (특성 지향의 제품계열분석 모델의 정형적 정의와 일관성 분석)

  • Lee Kwanwoo
    • Journal of KIISE:Software and Applications
    • /
    • v.32 no.2
    • /
    • pp.119-127
    • /
    • 2005
  • Product line analysis is an activity for analyzing requirements, their relationships, and constraints in a product line before engineering product line assets (e.g., architectures and components). A feature-oriented commonality and variability analysis (called feature modeling) has been considered an essential part of product line analysis. Commonality and variability analysis, although critical, is not sufficient to develop reusable and adaptable product line assets. Dependencies among features and feature binding time also have significant influences on the design of product line assets. In this paper. we propose a feature-oriented product line analysis model that extends the existing feature model in terms of three aspects (i.e., feature commonality and variability, feature dependency, and feature binding time). To validate the consistency among the three aspects we formally define the feature-oriented product line analysis model and provide rules for checking consistency.

Production of Carrot Pomace Fortified with Mucilage, Fibrinolytic Enzyme and Probiotics by Solid-state Fermentation Using the Mixed Culture of Bacillus subtilis and Leuconostoc mesenteroides

  • Jung, Hye-Won;Lee, Sam-Pin
    • Preventive Nutrition and Food Science
    • /
    • v.14 no.4
    • /
    • pp.335-342
    • /
    • 2009
  • Bioactive compounds were produced from carrot pomace by solid-state fermentation using Bacillus subtilis HA and Leuconostoc mesenteroides. The carrot pomace (CP) fermented by B. subtilis HA with 3% monosodium glutamate (MSG) showed higher production of various bioactive compounds, with 1.64 Pa·sn of consistency, 2.31% of mucilage content, 16.95 unit/g of fibrinolytic enzyme activity, 35.3 unit/g of proteolytic activity and 37.5 mg% of tyrosine content. The mucilage production was greatly dependent upon the concentration of MSG added. Most MSG added in CP was converted into mucilage (2.3%) including 0.83% poly-$gamma$-glutamic acid (PGA) with 1,505 kDa of molecular weight. The CP fermented secondly by Leuc. mesenteroides showed acidic pH and lower consistency. However, the fibrinolytic and proteolytic activities were increased. The secondly fermented CP showed the viable cell counts with $2.5{\time}108$ CFU/g of B. subtilis HA and $3.7{\time}109$ CFU/g of Leuc. mesenteroides, respectively. The freeze-dried fermented CP showed 2.88 Pa·sn of consistency, 24% of mucilage content and 104.9 unit/g of fibrinolytic enzyme activity, respectively. Also, the powder of fermented CP indicated viable cell counts of $8.0{\time}107$ CFU/g of B. subtilis and $4.0{\time}108$ CFU/g of Leuc. mesenteroides. Therefore, the fermented CP that was fortified with dietary fibers, fibrinolytic enzyme and probiotics could be utilized as valuable ingredients of functional foods in food or cosmetic industries.

Estimation of Survival Function and Median Survival Time in Interval-Censored Data (구간중도절단자료에서 생존함수와 중간생존시간에 대한 추정)

  • Yun, Eun-Young;Kim, Choong-Rak
    • The Korean Journal of Applied Statistics
    • /
    • v.23 no.3
    • /
    • pp.521-531
    • /
    • 2010
  • Interval-censored observations are common in medical and epidemiologic studies; however, limited studies exist due to the complexity and special structure of interval-censoring. This paper introduces the imputation method and the self consistency method in the interval-censored data. We propose a new method of generating random numbers under an interval-censoring set-up. Through simulation studies we compare two methods under various simulation schemes in the sense of the mean squared error for estimating the median survival time and the mean integrated squared error for estimating the survival function. Under a moderate censoring percentage, the mean imputation method showed a better performance than the self-consistency method in estimating the median survival time and the survival function.

Performance Analysis of Men's 110-m Hurdles using Rhythmic Units

  • Hong, Sung Hong;Ryu, Jae Kyun
    • Korean Journal of Applied Biomechanics
    • /
    • v.28 no.2
    • /
    • pp.79-85
    • /
    • 2018
  • Objective: This study aimed to create a strategic training method to enhance optimal athletic ability using information from 1H to 10H rhythmic units. Method: Top three world class athletes and three national winners of 110-m hurdle finals from the 2010 Daegu International Athletics Competition and 2017 National Athletics Championship, respectively, were selected. To analyze the kinematic variables, Dartfish 9.0 was used for two-dimensional analysis. Results: Regarding the interval time from the start to the finish line, the national athletes took less time during the pure acceleration phase (start to 1H) than the foreign athletes. The horizontal velocity increase was slower after 1H; the national athletes showed a lack of ability to accelerate at the interval phases. Moreover, the hurdle clearance time between phases was longer in the national athletes than in the foreign athletes and lacked consistency. Conclusion: The national athletes lacked the ability to accelerate at the transition, maximum rhythm, rhythm maintenance, and re-acceleration phases and showed a longer hurdle clearance time. If technical improvements and strategic training methods using rhythmic units are applied for hurdling motions, the national athlete's hurdling abilities, performance, and consistency could improve.

AN EXPERIMENTAL STUDY OF FROZEN-SLAB MIXING TECHNIQUE FOR ZINC-PHOSPHATE CEMENT USED IN KOREA (냉동연판혼합방법(冷凍練板混合方法)이 치과용(齒科用) 인산(燐酸) 아연(亞鉛) 시멘트의 물리적(物理的) 성질(性質)에 미치는 영향(影響)에 관(關)한 연구(硏究))

  • Jung, Ho-Kil
    • Journal of the korean academy of Pediatric Dentistry
    • /
    • v.8 no.1
    • /
    • pp.119-125
    • /
    • 1981
  • The Purpose of this study was to evaluate the effect of frozen slab mixing technique on physical property of zinc phosphate cement used in Korea. Standard consistency, setting time, film thickness, solubility of cement prepared in frozen slab and room temperature slab were tested. The obtained results were as follows. 1. Amount of powder required for standard-consistency for all cements tested could be increased. 2. Setting time for all cements tested could be decreased. 3. No significant difference in film thickness. 4. Solubility for all cements tested could be decreased.

  • PDF