• Title/Summary/Keyword: set covering

Search Result 248, Processing Time 0.023 seconds

A Face Robot Actuated With Artificial Muscle Based on Dielectric Elastomer

  • Kwak Jong Won;Chi Ho June;Jung Kwang Mok;Koo Ja Choon;Jeon Jae Wook;Lee Youngkwan;Nam Jae-do;Ryew Youngsun;Choi Hyouk Ryeol
    • Journal of Mechanical Science and Technology
    • /
    • v.19 no.2
    • /
    • pp.578-588
    • /
    • 2005
  • Face robots capable of expressing their emotional status, can be adopted as an efficient tool for friendly communication between the human and the machine. In this paper, we present a face robot actuated with artificial muscle based on dielectric elastomer. By exploiting the properties of dielectric elastomer, it is possible to actuate the covering skin, eyes as well as provide human-like expressivity without employing complicated mechanisms. The robot is driven by seven actuator modules such eye, eyebrow, eyelid, brow, cheek, jaw and neck module corresponding to movements of facial muscles. Although they are only part of the whole set of facial motions, our approach is sufficient to generate six fundamental facial expressions such as surprise, fear, angry, disgust, sadness, and happiness. In the robot, each module communicates with the others via CAN communication protocol and according to the desired emotional expressions, the facial motions are generated by combining the motions of each actuator module. A prototype of the robot has been developed and several experiments have been conducted to validate its feasibility.

The Upper Garment Sizing Systems according to Somatotype of Elderly Men (노년남성의 체형별 상의 치수 체계)

  • Kim Su Hyeon;Lee Jeong Ran
    • Journal of the Korean Society of Clothing and Textiles
    • /
    • v.29 no.1 s.139
    • /
    • pp.157-166
    • /
    • 2005
  • The purpose of this study was to establish the upper garment sizing systems for elderly men. These were on the basis of classification of 294 elderly men's somatotypes aged between 60 and 80 with the extent of drop value and analysis of the sizing systems of men's wear companies. The results were as follows: First, the sizing systems of men's wear companies were established with priority given to the young and the middle whose heights were taller than the elderly. There was no sizing system only for elderly men in men's wear companies. Secondly, as the height range increased, the size of chest and waist proportionally increased; however, the waist sizes were limited to somewhat small size ranges. So the sizing systems of men's wear companies had difficulty in covering up the developed-waist somatotype of the elderly. Thirdly, only 1 company out of 10 established the sizing system according to the somatotype. Lastly, the total numbers of size which were established by this study according to somatotype were 40; 18 sizes were set for type A, 10 for type Y, and 12 for type B. The standard sizes were 97-88-165 for type A,94-79-165 for type Y, and 97-94-165 for type B.

Patient Satisfaction as an Indicator of Service Quality in Malaysian Public Hospitals

  • Manaf, Noor Hazilah Abd;Nooi, Phang Siew
    • International Journal of Quality Innovation
    • /
    • v.10 no.1
    • /
    • pp.77-87
    • /
    • 2009
  • The main aim of the paper is to provide an empirical analysis on patient satisfaction as an indicator of service quality in Malaysian public hospitals. Self-administered questionnaires were administered to patients by convenience sampling. Two sets of questionnaires were used, one for inpatient and another one set for outpatient. Selection of hospitals was made according to states in Peninsular Malaysia. 23 hospitals covering all state level hospitals, the National Referral Centre and selected district hospitals were chosen as respondent hospitals. Two dimensions of service quality emerged, namely clinical and physical dimension of service. Both outpatient and inpatient were found to be more satisfied with clinical dimension of service than physical dimension. For outpatient satisfaction, there was positive correlation between waiting time and patient satisfaction. Patient satisfaction was also found to be higher in the smaller district hospitals than in the larger state hospitals. For clinical dimension of service, patients were satisfied with the services of doctors and nurses, while for physical dimension of service, patients were satisfied with the cleanliness of the facilities. The ability of the research to be conducted by random sampling was inhibited by the reluctance of patients to cooperate, which led to the use of convenience sampling. Studies have also shown that patients are reluctant to express their feelings on services provided by their caregivers. The study provides primary data for a nationwide study on patient satisfaction in Malaysian public hospitals, for both inpatient and outpatient.

Feasibility of Group Risk Income Protection Insurance for Para Rubber in Thailand

  • DUANGMANEE, Krittiya
    • The Journal of Asian Finance, Economics and Business
    • /
    • v.7 no.10
    • /
    • pp.621-628
    • /
    • 2020
  • The study investigates a promising sustainable crop-insurance risk mitigation plan, namely, Group Risk Income Protection (GRIP) insurance, for the cultivation of Para rubber, a crop for which Southern Thailand constitutes over half of the national harvested area, but which recently experienced a shift in prices and yields, substantially affecting farmers. The research takes as its starting point historical data covering the 2001-2018 period for this crop's cultivation in three of Thailand's Andaman South Coast provinces - Trang, Krabi, and Phangnga. The results indicate that, from a relatively high base in 2001, Trang's yields dropped sharply before a more gradual decline (apparently still ongoing), whereas those for Krabi and Phangnga followed a smoother downward trajectory throughout the period. Meanwhile, prices everywhere rose steadily before falling from 2011 onwards - a decrease that shows no signs of abating. The yield/price relationship was negative for one province and slightly positive for the other provinces. Furthermore, all provinces' Para rubber income initially grew continually but fell after 2011, with this trend seemingly persisting to this day. The paper's findings suggest that, after early moves to entrench GRIP insurance, it looks set to become a feasible option for Para rubber, making policy agreement details an interesting subject for subsequent investigations.

Far-infrared Study of Supernova Remnants in the Large Megellanic Cloud

  • Kim, Yesol;Koo, Bon-Chul;Seok, Ji Yeon
    • The Bulletin of The Korean Astronomical Society
    • /
    • v.38 no.1
    • /
    • pp.53-53
    • /
    • 2013
  • We present preliminary results of far-infrared(FIR) study of the supernova remnant(SNR)s in the Large Magellanic Cloud using the Herschel HERITAGE (HERschel Inventory of The Agents of Galaxy Evolution) data set. HERITAGE provides FIR data covering the entire LMC at 100,160, 250, 350, and 500 um. In order to confirm FIR emission associated with SNRs, we refer to Magellanic Cloud Emission-Line Survey (MCELS) H-alpha & SII data, Spitzer surveying the Agents of a Galaxy's Evolution (SAGE) Multiband Imaging Photometer (MIPS) 24um & 70um data, Chandra Supernova Remnants Catalog, and ATCA 4.8GHz continuum images of Dickel et al. (2005). Among 47 SNRs in the LMC, 7 SNRs show associated FIR emission. We present multi-wavelength view of 5 SNRs; DEM L249, N49, N63A, N132D, and the SNR in N4. N49 and N132D show morphological correlation in FIR and X-ray, suggesting that the FIR emission is from dust grains collisionally heated by X-ray emitting plasma. The FIR emission of N63A resembles H-alpha emission, which implies that the FIR line radiation could be dominant. The FIR images of the rest two objects, DEM L249 and SNR in N4, show no correlation to the other-waveband images.

  • PDF

The Status and Development Trend of Nature Reserves in Heilongjiang Province, Northeastern China

  • Piao, Xi-Wan;Hong, Sun-Kee
    • The Korean Journal of Ecology
    • /
    • v.23 no.4
    • /
    • pp.339-345
    • /
    • 2000
  • Heilongjiang Province has set up 104 nature reserves, with a total area of 2,641,700 ha, or 5.88% of the total area of the province. These constitute a network of nature reserves comprising most important types of nature reserves. and play an active role for improving the protection of the ecological environment and for the continuous economic and social development of the province. But in the management of these nature reserves, there are still some problems with people's idea, with educating the public, and with capital investment. These problems should be treated seriously. To preserve our natural heritage and biodiversity and to promote the sustainable development of our society and economy, it is projected that by the year 2000. the number of nature reserves in Heilongjiang is to reach 109, covering 6.17% of the total land area of the province. This percentage will be further increased to 8.62% by 2010, at which time the network of nature reserves is to have a proper distribution and comprehend all the important types of nature reserves. This will ensure the healthy development of the cause of nature conservation. with systematic planning, active protection. and sustainable use, so that ecological and social benefits can be developed hand in hand with economic benefits.

  • PDF

A Study on the Efficiency Analysis of Container Terminal (우리나라 컨테이너터미널 효율성 분석에 관한 연구)

  • Park, Byung-Keun;Choi, Min-Seung;Song, Jae-Young
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • v.1
    • /
    • pp.163-170
    • /
    • 2006
  • This paper presents a approach to the measurement of efficiency. Data envelopment analysis(DEA), as it is called, has particular applicability in the service sector. Applying mathematical programming techniques, DEA enables relative efficiency ratings to be derived within a set of analysed units. This paper investigates the efficiency employing DAE-CCR Model and DEA-BCC Model on data for 15 container terminals covering 1998$^{\sim}$2005 in Korea Results of this paper, suggests to some plan for operation strategy in Container terminals.

  • PDF

Dynamic Interaction between Conditional Stock Market Volatility and Macroeconomic Uncertainty of Bangladesh

  • ALI, Mostafa;CHOWDHURY, Md. Ali Arshad
    • Asian Journal of Business Environment
    • /
    • v.11 no.4
    • /
    • pp.17-29
    • /
    • 2021
  • Purpose: The aim of this study is to explore the dynamic linkage between conditional stock market volatility and macroeconomic uncertainty of Bangladesh. Research design, data, and methodology: This study uses monthly data covering the time period from January 2005 to December 2018. A comprehensive set of macroeconomic variables, namely industrial production index (IP), consumer price index (CPI), broad money supply (M2), 91-day treasury bill rate (TB), treasury bond yield (GB), exchange rate (EX), inflow of foreign remittance (RT) and stock market index of DSEX are used for analysis. Symmetric and asymmetric univariate GARCH family of models and multivariate VAR model, along with block exogeneity and impulse response functions, are implemented on conditional volatility series to discover the possible interactions and causal relations between macroeconomic forces and stock return. Results: The analysis of the study exhibits time-varying volatility and volatility persistence in all the variables of interest. Moreover, the asymmetric effect is found significant in the stock return and most of the growth series of macroeconomic fundamentals. Results from the multivariate VAR model indicate that only short-term interest rate significantly influence the stock market volatility, while conditional stock return volatility is significant in explaining the volatility of industrial production, inflation, and treasury bill rate. Conclusion: The findings suggest an increasing interdependence between the money market and equity market as well as the macroeconomic fundamentals of Bangladesh.

A Study on the Policy Directions related to the Introduction of Smart Maritime Autonomous Surface Ship (MASS) (스마트 자율운항선박(MASS)의 도입정책 연구)

  • Park, Han-Seon;Park, Hae-Ri
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • 2019.05a
    • /
    • pp.234-235
    • /
    • 2019
  • Smart Maritime Autonomous Surface Ship(MASS) is aiming to provide eco-friendly smart maritime navigation service based on safety, reliability and efficiency for maritime safety and marine environment protection. In the future, it is expected to bring about a radical change across the marine industry such as marine, maritime, port, logistics, ship-building and so forth. Therefore, in this paper, policy priorities related to the introduction of MASS were identified, and response strategies for each industry were set up, and a policy plan for establishing a smart maritime logistics system covering shipping, port and shipbuilding fields was proposed.

  • PDF

On a New Index for Research Assessment

  • Farid, Farid O.
    • Journal of Information Science Theory and Practice
    • /
    • v.9 no.3
    • /
    • pp.56-75
    • /
    • 2021
  • We introduce a new research assessment measure, called the research excellence index. The measure, which we denote by RE-index, accurately assesses the research performance of a researcher. The methodology used in deriving the RE-index tackles many of the flaws of popular research performance indicators such as publication counts, citation counts, and the h and g indices. A dataset is introduced, which takes advantage of the wide coverage of Scopus and the Library of Congress, and, at the same time, deals with the Scopus database depth problem. For an academic publication x, a prestige-type and length scores are assigned, and if x is published in an academic periodical publication J, the stature of J is identified through a quartile score. The three scores are used to assign a value score to every academic publication, and cited academic publications are given citation scores that encompass both cases of including and excluding self-citations. The foregoing scores are used to derive another set of scores measuring the combined qualitative and quantitative aspects of the creative work, citations of creative work, informative work and citations of informative work of a researcher. The scores take into consideration co-authorship. From these scores, two versions of the RE-index for a researcher are derived, covering the cases of including and excluding self-citations. The new measure is calculated for two mathematicians.