• Title/Summary/Keyword: Production Education

Search Result 1,863, Processing Time 0.083 seconds

Research on scheduling and optimization under uncertain conditions in panel block production line in shipbuilding

  • Wang, Chong;Mao, Puxiu;Mao, Yunsheng;Shin, Jong Gye
    • International Journal of Naval Architecture and Ocean Engineering
    • /
    • v.8 no.4
    • /
    • pp.398-408
    • /
    • 2016
  • Based on non-completely hybrid flow line scheduling of panel block in shipbuilding, several uncertain factors influencing the problem were analyzed in a real environment, and a nonlinear integer programming model was built for each sub-scheduling problem. To narrow the difference between theory and application, rolling horizon and rescheduling methods are proposed. Moreover, with respect to the uncertainty of processing time, arriving time and due time, we take the minimizing of the early and delayed delivery costs as the objective, and establish an evaluation with a global penalty function. Finally, numerical experiments and a simulation analysis were undertaken to demonstrate the effectiveness of the model and algorithm.

FORMULATION AND CONSTRAINTS ON LATE DECAYING DARK MATTER

  • LAN, NGUYEN Q.;VINH, NGUYEN A.;MATHEWS, GRANT J.
    • Publications of The Korean Astronomical Society
    • /
    • v.30 no.2
    • /
    • pp.315-319
    • /
    • 2015
  • We consider a late decaying dark matter model in which cold dark matter begins to decay into relativistic particles at a recent epoch ($z{\leqslant}1$). A complete set of Boltzmann equations for dark matter and other relevant particles particles is derived, which is necessary to calculate the evolution of the energy density and density perturbations. We show that the large entropy production and associated bulk viscosity from such decays leads to a recently accelerating cosmology consistent with observations. We determine the constraints on the decaying dark matter model with bulk viscosity by using a MCMC method combined with observational data of the CMB and type Ia supernovae.

The Current Status and Tasks of Marsh snail Restocking Project based on Economic Performance Evaluation (다슬기 방류사업의 현황 및 과제 -경제효과분석을 중심으로-)

  • SONG, Jung-Hun;KANG, Jong-Ho
    • Journal of Fisheries and Marine Sciences Education
    • /
    • v.28 no.2
    • /
    • pp.450-455
    • /
    • 2016
  • Reinforcement for reduced daseulgi jawonryang protect natural resources, and form an artificial seed production and resource recovery in technology development and chipaebangryu doemeuroseo interested local governments, water 04, KEPCO daseulgi at promoting and stocking a lot of business, but are stocked in Format breed, stocking density, and a systematic way that does not occur in siljeong is discharged. Therefore, this study conducted by the appropriate discharge plan presented daseulgi smooth business execution and discharge of the business to be its primary purpose.

Solar Cell Classification using Gaussian Mixture Models (가우시안 혼합모델을 이용한 솔라셀 색상분류)

  • Ko, Jin-Seok;Rheem, Jae-Yeol
    • Journal of the Semiconductor & Display Technology
    • /
    • v.10 no.2
    • /
    • pp.1-5
    • /
    • 2011
  • In recent years, worldwide production of solar wafers increased rapidly. Therefore, the solar wafer technology in the developed countries already has become an industry, and related industries such as solar wafer manufacturing equipment have developed rapidly. In this paper we propose the color classification method of the polycrystalline solar wafer that needed in manufacturing equipment. The solar wafer produced in the manufacturing process does not have a uniform color. Therefore, the solar wafer panels made with insensitive color uniformity will fall off the aesthetics. Gaussian mixture models (GMM) are among the most statistically mature methods for clustering and we use the Gaussian mixture models for the classification of the polycrystalline solar wafers. In addition, we compare the performance of the color feature vector from various color space for color classification. Experimental results show that the feature vector from YCbCr color space has the most efficient performance and the correct classification rate is 97.4%.

Production of Platinum Nanoparticles and Nanoaggregates Using Neurospora crassa

  • Castro-Longoria, E.;Moreno-Velasquez, S.D.;Vilchis-Nestor, A.R.;Arenas-Berumen, E.;Avalos-Borja, M.
    • Journal of Microbiology and Biotechnology
    • /
    • v.22 no.7
    • /
    • pp.1000-1004
    • /
    • 2012
  • Fungal biomass and fungal extract of the nonpathogenic fungus Neurospora crassa were successfully used as reducing agents for the biosynthesis of platinum nanoparticles (PtNPs). The experiment was carried out by exposing the fungal biomass or the fungal extract to a 0.001 M precursor solution of hexachloroplatinic(IV) acid ($H_2PtCl_6$). A change of color of the biomass from pale yellow to dark brown was the first indication of possible formation of PtNPs by the fungus. Subsequent analyses confirmed the intracellular biosynthesis of single PtNPs (4-35 nm in diameter) and spherical nanoaggregates (20-110 nm in diameter). Using the fungal extract, similar results were obtained, producing rounded nanoaggregates of Pt single crystals in the range of 17-76 nm.

Regulation of Blood Glucose Homeostasis during Prolonged Exercise

  • Suh, Sang-Hoon;Paik, Il-Young;Jacobs, Kevin A.
    • Molecules and Cells
    • /
    • v.23 no.3
    • /
    • pp.272-279
    • /
    • 2007
  • The maintenance of normal blood glucose levels at rest and during exercise is critical. The maintenance of blood glucose homeostasis depends on the coordination and integration of several physiological systems, including the sympathetic nervous system and the endocrine system. During prolonged exercise increased demand for glucose by contracting muscle causes to increase glucose uptake to working skeletal muscle. Increase in glucose uptake by working skeletal muscle during prolonged exercise is due to an increase in the translocation of insulin and contraction sensitive glucose transporter-4 (GLUT4) proteins to the plasma membrane. However, normal blood glucose level can be maintained by the augmentation of glucose production and release through the stimulation of liver glycogen breakdown, and the stimulation of the synthesis of glucose from other substances, and by the mobilization of other fuels that may serve as alternatives. Both feedback and feedforward mechanisms allow glycemia to be controlled during exercise. This review focuses on factors that control blood glucose homeostasis during prolonged exercise.

School Feeding Concepts

  • Doss, Mona H.
    • Journal of Nutrition and Health
    • /
    • v.5 no.2
    • /
    • pp.53-58
    • /
    • 1972
  • Organized feeding programmes can contribute to the health and well-being of students All such programme must be planned carefully, taking into account the nutritional needs of the group to be fed, available food supplies, facilities for food preparation and distribution, and available funds. In most instances provision must be made for training staff to operate large-scale feeding proframmes. Nutrition education should be an important aspect of all feeding programme, and should provide simple clear information on food and nutrition in relation to health. The early participation of parents and the local community in the programme, particularly through the production of local low-cost foods of high nutritional value will help to insure continuity after external aid has ceased. Programmes should be evaluated in order to measure the benefits obtained in relation to the cost of the operation. Anthropometric data, absenteeism and scholastic achievement may serve as indicators in school feeding programmes.

  • PDF

A Study on High-Speed Response Characteristics of a Solenoid (솔레노이드의 고속응답특성에 관한 연구)

  • Jo, Young-Dok;Yoo, Seung-Ryeol
    • Journal of the Semiconductor & Display Technology
    • /
    • v.9 no.2
    • /
    • pp.27-31
    • /
    • 2010
  • A solenoid actuator characterized by low price, available small size, and convenience is one of the main components of production equipments requiring compact, high-speed actuators. When the response needs to be under few milli-seconds, sensing the position of the actuator is much harder because of the inherent low inertia. Improvement of the required performance of these actuators can be obtained by the simulation using a mathematical model. In this study, the mathematical model is presented and proved by comparing the responses of the actual solenoid and of the simulation. The position of the actual solenoid was measured by the eddy current sensor. The simulation was executed using SIMULINK$^{(R)}$.

First record of Neorhodomela larix (Turner) Masuda (Rhodomelaceae, Rhodophyta) in Korea (한국산 홍조 빨간검둥이과 1미기록종, Neorhodomela larix (Turner) Masuda)

  • Kang, Pil Joon;Nam, Ki Wan
    • Journal of Fisheries and Marine Sciences Education
    • /
    • v.23 no.1
    • /
    • pp.126-129
    • /
    • 2011
  • Vegetative morphological information of the red alga Neorhodomela larix (Turner) Masuda (Rhodomelaceae) is given. This species is characterized by thalli up to 15 cm high, brownish black in color, pericentral cells with transverse division, the first order subulate branches with determinate growth, numerous adventitious branches produced at axils and absence of vegetative trichoblasts. Particularly, N. larix is distinct from other Korean Neorhodomela species by the lack of vegetative trichoblasts, which seems to be caused by their delayed production until reproductive structures are formed. This is the first record of N. larix in Korea.

A multipronged approach to innovation: The Mauritius Case Study

  • Madhou, Madhvee;Moosun, Salma Bibi;Modi-Nagowah, Divya Naginlal
    • Asian Journal of Innovation and Policy
    • /
    • v.11 no.1
    • /
    • pp.50-68
    • /
    • 2022
  • Innovation is broadly defined as the creation or adoption of new ideas and technologies, which has become an instrumental tool to determine the success and development level of a country as it leads to competitiveness and productivity of companies. Innovation is influenced by many factors including geographic and socio-economic factors as well as a political framework. In fact, innovation is systemic in nature, and it focuses on interactions amongst a nexus of processes such as Research and Development (R&D), production, business, and education, amongst other factors. However, not all innovation ecosystems have the same architectural models or internal collaboration. This paper aims to review the structure of the National Innovation Ecosystem by highlighting the different actions taken by the Government of Mauritius over the years. The multipronged approach of the government will be demonstrated through the different lines of actions to boost the innovation culture and offers a foundation for other small island developing state to follow to be at par with other innovative economies.