• Title/Summary/Keyword: storages

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Microbiological Evaluations of Retail and Refrigerated Chickens in Winter (겨울철 소매점 및 냉장 닭고기의 미생물학적 평가)

  • 고대희
    • The Korean Journal of Food And Nutrition
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    • v.12 no.2
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    • pp.109-112
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    • 1999
  • Aerobic plate counts(APC) gram-negative bacterial counts (GNC) and sensory evaluations on chic-ken carcasses during retail and refrigerated storages (3$\pm$1$^{\circ}C$ and 1$0^{\circ}C$) were evaluated. APC and GNC on whole chicken in retail store after storage of 7 days at 3$\pm$1$^{\circ}C$ increased to 3.11 and 3.89 log units com-pared to the initial controls. APC and GNC on whole chicken after storage of 7 days at 1$0^{\circ}C$ increased to 5.43 and 5.03 log units. Sensory scores of chicken carcasses obtained from retail store were in the "liked less" category after storage of 7 days compared to fresh controls. These results indicated that chicken carcasses during refrigerated (1$0^{\circ}C$) storages rapidly allowed the growth of aerobic spoilage bacteria dur-ing storage period which cluld not be microbiologically acceptable after of 7 days of 7 days.

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A System Model for Storage Independent Use of SPARQL-to-SQL Translation Algorithm (SPARQL-to-SQL 변환 알고리즘의 저장소 독립적 활용을 위한 시스템 모델)

  • Son, Ji-Seong;Jeong, Dong-Won;Baik, Doo-Kwon
    • Journal of KIISE:Computing Practices and Letters
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    • v.14 no.5
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    • pp.467-471
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    • 2008
  • With active research on Web ontology, various storages and query languages have been developed to store Web Ontology. As SPARQL usage increases and most of storages are based on relational data base, the necessity of SPARQL-to-SQL translation algorithm development becomes issued. Even though several translation algorithms have been proposed, there still remain the following problems. They do not support fully SPARQL clauses and they are dependent on a specific storage model. This paper proposes a new model to use a specific translation algorithm independently on storages.

Field Measurements and Numerical Analysis on the Efficiency of Water Curtain Boreholes in Underground Oil Storages (지하 유류비축기지 수벽공의 효율에 관한 현장계측 및 수치 해석 연구)

  • 이경주;이희근
    • Tunnel and Underground Space
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    • v.8 no.2
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    • pp.79-86
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    • 1998
  • This study was performed to suggest to suggest suitable design conditions of water curtain system through analysis on pressure down in boreholes by hydraulic tests carried out I construction fields for underground oil storages. The influence by hydraulic conductivities of rock mass around boreholes on pressure down in boreholes was analysed. The relationship between array of boreholes and their pressure down was also analysed. Groundwater flow analysis on crude oil and LPG storages was carried out to evaluate results of field tests and to investigate distribution of hydraulic gradient in rock mass around cavern using finite difference method. As the results, hydraulic tests showed that pressure down in boreholes was inverse proportional to the hydraulic conductivity of surrounding rock mass. The rate of pressure down of boreholes was not influenced by water curtain system more than 20m over cavern and was proportional to installation interval of boreholes. The hydraulic gradient in rock mass around cavern was proportional to distance and interval of boreholes and its value was not satisfactory to oil tightness condition in case of no water curtain system.

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Design of High Rate Turbo Code for PR4 Channel (PR4 channel에서의 High Rate Turbo Code의 설계)

  • 변남균;김종태
    • Proceedings of the IEEK Conference
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    • 2001.06b
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    • pp.297-300
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    • 2001
  • Turbo code shows the great performance near Shannon limit on AWGN channel. Mainly, turbo code has been studied and designed for wireless digital communications. There are recent studies that applies turbo decoder on magnetic recording. Because of the limited capacity of magnetic storages, high rate turbo code is used for magnetic storages. This paper presents some issues on implementing high rate turbo code and structures for designing turbo decoder

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Skyline Query Processing Method based on Data Centric Storage (데이터 중심 저장구조에 기반한 스카이라인 질의 처리 기법)

  • Yeo, Myung-Ho;Seong, Dong-Ook;Song, Seok-Il;Yoo, Jae-Soo
    • Proceedings of the Korea Contents Association Conference
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    • 2009.05a
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    • pp.3-7
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    • 2009
  • Data centric storages for sensor networks have been proposed to efficiently process multi-dimensional range queries as well as exact matches. Usually, a sensor network does not process only one type of the query but supports various types of queries such as range queries, exact matches and skyline queries. Therefore, a sensor network based on a data centric storage for range queries and exact matches should process skyline queries efficiently. However, existing algorithms for skyline queries have not considered the features of data centric storages. Some of the data centric storages store similar data in sensor nodes that are placed on geographically similar locations. Consequently, all data are ordered in a sensor network. In this paper, we propose a new skyline query processing algorithm that exploits the above features of data centric storages.

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A Cross Layer Optimization Technique for Improving Performance of MLC NAND Flash-Based Storages (MLC 낸드 플래시 기반 저장장치의 쓰기 성능 개선을 위한 계층 교차적 최적화 기법)

  • Park, Jisung;Lee, Sungjin;Kim, Jihong
    • Journal of KIISE
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    • v.44 no.11
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    • pp.1130-1137
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    • 2017
  • The multi-leveling technique that stores multiple bits in a single memory cell has significantly improved the density of NAND flash memory along with shrinking processes. However, because of the side effects of the multi-leveling technique, the average write performance of MLC NAND flash memory is degraded more than twice that of SLC NAND flash memory. In this paper, we introduce existing cross-layer optimization techniques proposed to improve the performance of MLC NAND flash-based storages, and propose a new integration technique that overcomes the limitations of existing techniques by exploiting their complementarity. By fully exploiting the performance asymmetry in MLC NAND flash devices at the flash translation layer, the proposed technique can handle many write requests with the performance of SLC NAND flash devices, thus significantly improving the performance of NAND flash-based storages. Experimental results show that the proposed technique improves performance 39% on average over individual techniques.

One-D Model Prediction of Pollutant Transport at a Canal Network (수로망에서의 오염물질 확산의 1차원 예측)

  • Lee, Jung-Lyul;Hsiang Wang
    • Journal of Korean Society of Coastal and Ocean Engineers
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    • v.6 no.1
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    • pp.51-60
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    • 1994
  • A one-dimensional numerical model has been developed through a Lagragian formulation, which is applicable to advection and diffusion of dissolved matters in storages. The study was conducted to the pollutants released into a canal network in Burnt Store Isles, Punta Gorda, Florida. USA. The hydrodynamic model was developed by using an implicit finite difference scheme. In the computational domain, the network system consists of prismatic channels and storages. The finger canals and small tributaries ale treated as storages in the simplified flow network The numerical results show relatively good agreement with field experiments.

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Optimal design of parallel noncontinuous units with feedstock/product storages (원료및 제품저장조를 포함하는 병렬 비연속 공정의 최적설계)

  • Yi, Gyeong-Beom
    • Journal of Institute of Control, Robotics and Systems
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    • v.3 no.5
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    • pp.532-541
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    • 1997
  • This article derives an analytic solution to determine the optimal size of multiple noncontinuous process and storage units. The total cost to be minimized consists of the setup cost of noncontinuous processing units and the inventory holding cost of feedstock/product storages. A novel approach, which is called PSW(Periodic Square Wave) model, is applied to represent the material flow among non-continuous units and storages. PSW model presumes that the material flow between unit and storage is periodic square wave shaped. The resulting optimal unit size has similar characteristics with the classical economic lot sizing model such as EOQ(Economic Order Quantity) or EPQ(Economic Production Quantity) model in a sense that the unit size is determined as the balance between setup and inventory holding cost. However, the influence of inventory holding cost of PSW model is different from that of EOQ/EPQ model. EOQ/EPQ model includes only the product inventory holding cost but PSW model includes all inventory holding costs around the non-continuous unit with proportional contribution. PSW model is suitable for analyzing interlinked process-storage system. The optimal lot size of PSW model is smaller than that of EOQ/EPQ model. This is quitea remarkable result considering that the EOQ/EPQ model has been is widely used since last half century.

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Evaluations and Attitudes of Workers in Low Temperature Storages of Discount Stores Toward their Uniforms (대형 할인 마트 저온 창고 작업자의 유니폼에 대한 평가와 태도)

  • Yoo, Hwa-Sook
    • Fashion & Textile Research Journal
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    • v.13 no.4
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    • pp.538-547
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    • 2011
  • The purpose of this study was to examine the evaluations and attitudes of workers in low temperature storages of discount stores toward their uniforms by carrying out a field study and a survey. The effects of evaluation attributes on their attitudes were also investigated. In this study, the reference of the evaluation of uniforms was based on the concepts of serviceability, which implies the fitness for purpose of products and consists of durability, care, comfort and aesthetic appearance. Of 400 questionnaires, 253 of them were used for data analysis. The data were analyzed by descriptives, t-test, factor analysis, reliability test and regression analysis with SPSS 12.0. As a result, it showed that workers have set low values on easy care, physiological comfort, aesthetic appearance and durability among the evaluation attributes. In attitudes toward the uniforms, emotional attitude was negative whereas behavioral attitude positive. It appeared that the evaluation attributes had influence on the attitude toward the uniforms and esthetic appearance among the attributes had the biggest effects on the workers' attitude. In conclusion, it was found that the discount store uniforms should be improved in the aspects of easy care and physiological comfort, and focused on the esthetic appearance for workers' positive attitudes to their uniforms.

Classification System of Collections and Distribution of Storages in Domestic Museum of Historic Relics (국내 역사계박물관의 소장자료 분류체계와 수장고 분류방안)

  • Jung, Sung-Wook
    • Korean Institute of Interior Design Journal
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    • v.15 no.2 s.55
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    • pp.138-149
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    • 2006
  • A museum's collections is fundamental factors to construct important activity of museum performing a role as cultural facility for learning, education and research. Therefore, conservation of collections through appropriate environments is previously established in step of planing a museum. Hereby, the purpose of this study is to set up the classification of collections and suggest a useful guidance of the storage division in a domestic museum. The results of this study are as follows. First, the main factors of deterioration are temperature and relative humidity in a museum storage, so classification of collections should be set up according to the objective standards of these factors. Second, the classification of collections can be performed as follow: the group for nonorganic materials subdivide metal, chinaware, earthenware, and jade stone, the group for organic materials subdivide leather hair paper fabric, bone horn shell mound and wood herbage and the group for composed materials. Third, for storage division of a domestic museum, basically has to consider that it is reasonable to plan $4{\sim}5$ storages in metal, jade stone, chinaware earthenware, and organic materials of $1{\sim}2$ units in case of a serial of history like archaeological, antique museum. And in case of folk relics of modern and contemporary arts are collected, it is reasonable to plan over 5 storages add composed materials to foregoing classification.