• Title/Summary/Keyword: perishable

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A Study on the Research Methods in History of Costume (복식사 연구방법에 관한 소고(I))

  • 신상옥
    • Journal of the Korean Home Economics Association
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    • v.18 no.4
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    • pp.41-45
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    • 1980
  • We must identify the forms of dress devised throughout ages, when we wtudy, interpret and analyze the numerous resource material of costume. The study which depends on reference to actual artifacts is necessarily limited. Whereas items of contemporary dress are readily available, much from earlier eras has been destroyed or has deteriorated through time. Such as cottons, linens, silks, wools, leathers and furs are perishable organic materials. Few garments dated earlier than seventeenth century has survived except armor, jewelry. We have many sources of the information are available to study on costume of earlier eras. These sources are wall paintings, sculptures, painting, monumental brasses, manuscript illustration ceramics, coins, medals, mosaics, archives, literature. Wall painting and frescoes provided an useful source for costume study. Many wall paintings and frescoes were destroyed, were changed in color. It si advisable to interpret the dress detail, form color carefully. Sculpture would be useful to see the back and side views of dress. One of the most important points which should be made abut the use of sculpture as a source for costume study in early periods is that the sculptor's style will often change the character of a costume. As the painting si two-dimensional evidence for a three-dimensional costume, paintings must be accurately studied. What we must do, as far as we can, is to look at all visual representations in the light of other contemporary evidence in order to interpret the information correctly.

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Mathematical Model for Revenue Management with Overbooking and Costly Price Adjustment for Hotel Industries

  • Masruroh, Nur Aini;Mulyani, Yun Prihantina
    • Industrial Engineering and Management Systems
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    • v.12 no.3
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    • pp.207-223
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    • 2013
  • Revenue management (RM) has been widely used to model products characterized as perishable. Classical RM model assumed that price is the sole factor in the model. Thus price adjustment becomes a crucial and costly factor in business. In this paper, an optimal pricing model is developed based on minimization of soft customer cost, one kind of price adjustment cost and is solved by Lagrange multiplier method. It is formed by expected discounted revenue/bid price integrating quantity-based RM and pricing-based RM. Quantity-based RM consists of two capacity models, namely, booking limit and overbooking. Booking limit, built by assuming uncertain customer arrival, decides the optimal capacity allocation for two market segments. Overbooking determines the level of accepted order exceeding capacity to anticipate probability of cancellation. Furthermore, pricing-based RM models occupancy/demand rate influenced by internal and competitor price changes. In this paper, a mathematical model based on game theoretic approach is developed for two conditions of deterministic and stochastic demand. Based on the equilibrium point, the best strategy for both hotels can be determined.

An assessment of post-harvest fish losses and preservation practices in Siavonga district, Southern Zambia

  • Maulu, Sahya;Hasimuna, Oliver J.;Monde, Concilia;Mweemba, Malawo
    • Fisheries and Aquatic Sciences
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    • v.23 no.9
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    • pp.25.1-25.9
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    • 2020
  • Fish is an extremely perishable food product which requires proper handling soon after harvest. The present study was aimed at assessing post-harvest fish losses and preservation practices in Siavonga district, Southern Zambia. Structured and semi-structured questionnaires were used to collect data on post-harvest fish losses and preservation practices from aquaculture producers, artisanal, and commercial fishers. All the fishers who landed on the lakeshore were interviewed, while aquaculture producers were randomly selected based on the information provided by the local department of fisheries. The results of the study revealed that all the fishers experienced post-harvest fish losses at varying degrees with those losing up to 10% of the total catch being in the majority. In contrast, aquaculture producers did not report any post-harvest fish losses. Most aquaculture producers commonly used chilling as preservation practice contrary to artisanal and commercial fishers who commonly used smoking and sun sun-drying respectively. Furthermore, fish product safety and quality control were poorly practiced in the district. Lack of cold storage facilities and fluctuating weather conditions were the major challenges impacting fish post-harvest activities. Therefore, to curb the loss of revenue due to post-harvest fish losses, we propose the introduction of new technology, self-development skills for fishing communities, and enhanced access to refrigeration facilities.

An artificial diet for the swallowtail butterfly, Papilio xuthus

  • Kim, Seonghyun;Hong, Seongjin;Park, Haechul;Lee, Youngbo;Park, Kwanho;Choi, Wonho;Kim, Namjung
    • International Journal of Industrial Entomology and Biomaterials
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    • v.28 no.1
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    • pp.1-4
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    • 2014
  • The effect of an artificial diet on developmental rate, a life history parameter, was examined for the swallowtail butterfly Papilio xuthus. Artificial insect diets are an essential component of many insect rearing systems that produce insects for research purposes. Complex agar-gelled diets are generally prepared in large batches and used shortly after preparation because the degradation of perishable diet ingredients, such as vitamins and fatty acids, can adversely affect insect quality (Brewer 1984). However, the timing of diet preparation may be inconvenient, and large batches wasteful, if the unused excess is discarded. The percentage of pupation varied considerably, with no significant differences among diets, on which a maximum pupation percentage of 83% was observed. Pellet-type diets were investigated with the aim of developing a more easily prepared diet. The extrusion of the artificial diet under high temperature and pressure may induce desirable chemical and physical changes in the extruded product. The purpose of the present study was to develop an artificial diet for rearing P. xuthus.

SUCCESS FACTORS FOR JIT MANAGEMENT OF PRIMARY COMMODITY SUPPLY CHAINS IN AUSTRALIA

  • Kim Tae Ho;Wegener Malcolm
    • Journal of the Korea Safety Management & Science
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    • v.6 no.3
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    • pp.141-152
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    • 2004
  • Supply chains for agricultural commodities with their various constraints such as production lead time, seasonal production, and methods of storage are limited in the extent to which techniques like Just-in-Time (JIT) inventory management can be applied. It is beyond the ability of producers to control harvest time and many agricultural products are perishable so that they can incur exceptional losses in storage if they are not handled correctly. This is a source of additional costs and inefficiency in supply chain management. The purpose of this study is to reduce or eliminate such sources of loss and inefficiency and to identify success factors for the JIT inventory management system where it can be applied for agricultural products. Where JIT techniques can be applied in supply chain management for agricultural products, costs such as transportation, inventory, and storage losses can be reduced with concurrent increases in efficiency. In the paper, some of the problems associated with applying JIT inventory control methods in supply chain management for agricultural commodities will be reported through a series of case studies.

Antioxidant and Bioactive Films to Enhance Food Quality and Phytochemical Production during Ripening

  • Min Byungjin;Dawson Paul L.;Shetty Kalidas
    • Food Science of Animal Resources
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    • v.25 no.1
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    • pp.60-65
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    • 2005
  • Antioxidant films are one active packaging technology that can extend food shelf-life through preventing lipid oxidation, stabilizing color, maintaining sensory properties and delaying microbial growth in foods. Because raw, fresh and minimal processed foods are more perishable during storage or under display conditions than further processed foods, they rapidly lose their original quality. Foods are susceptible to physical, chemical, and biochemical hazards to which packaging films can be effective barriers. Although films incorporated natural (tocopherols, flavonoids and phenolic acids) or synthetic antioxidants (BHT, BHA, TBHQ, propyl gallate) have been extensively tested to improve quality and safety of various foods, food applications require addressing issues such as physical properties, chemical action, cost, and legal approval. Increased interest in natural antioxidants as substitutes for synthetic antioxidants has triggered research on use of the new natural antioxidants in films and coatings. Use of new components (phytochemicals) as film additives can improve food quality and human health. The biosynthesis of plant phenolics can potentially be optimized by active coatings on harvested fruits and vegetables. These coatings can trigger the plants natural proline-linked pentose phosphate pathway to increase the phenolic contents and maintain overall plant tissue quality. This alternate metabolic pathway has been proposed by Dr. K. Shetty and is supported by numerous studies. A new generation of active food films will not only preserve the food, but increase food's nutritional quality by optimizing raw food biochemical production of phytochemicals.

Influences of Service Recovery Justice on Word-of-Mouth Effect in the Lodging (호텔 서비스 실패에 대한 회복 공정성이 구전효과에 미치는 영향 연구)

  • Cho, Sang-Su;Lee, Kwan-Pyo
    • The Journal of the Korea Contents Association
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    • v.6 no.11
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    • pp.74-84
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    • 2006
  • It is quite impossible for a service firm to deliver service without failure. The main reason is that service is intangible, perishable and heterogeneous in nature. Every service firm tries its best to recover service failure with understanding that service failure affects customers' evaluation and attitude for the firm. The research finds that customers' satisfaction after recovery affects customers' intentions both service encounter satisfaction and overall firm satisfaction strongly affects positive word-of-month and purchase intentions. The results have implications to researchers and service marketing managers. For researchers, the result will be helpful for them to further develop service failure and recovery framework. For service marketing managers, the result will suggest specific guidelines for establishing service recovery strategies.

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SUCCESS FACTORS FOR JIT MANAGEMENT OF PRIMARY COMMODITY SUPPLY CHAINS IN AUSTRALIA

  • Kim, Tae-Ho;Malcolm Wegener
    • Proceedings of the Safety Management and Science Conference
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    • 2004.05a
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    • pp.191-201
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    • 2004
  • Supply chains for agricultural commodities with their various constraints such as production lead time, seasonal production, and methods of storage are limited in the extent to which techniques like Just-in-Time (JIT) inventory management can be applied. It is beyond the ability of producers to control harvest time and many agricultural products are perishable so that they can incur exceptional losses in storage if they are not handled correctly. This is a source of additional costs and inefficiency in supply chain management. The purpose of this study is to reduce or eliminate such sources of loss and inefficiency and to identify success factors for the JIT inventory management system where it can be applied for agricultural products. Where ]IT techniques can be applied in supply chain management for agricultural products, costs such as transportation, inventory, and storage losses can be reduced with concurrent increases in efficiency. In the paper, some of the problems associated with applying ]IT inventory control methods in supply chain management for agricultural commodities will be reported through a series of case studies.

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An Study on the Consumer Perception for Open Shelf-life Dating Method of the Packaged Foods (포장식품의 유통기한 표시기법에 대한 소비자 심리 연구)

  • 하영선;김종경;박인식
    • Food Science and Preservation
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    • v.5 no.4
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    • pp.392-395
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    • 1998
  • This study was to reveal consumer attitudes about open shelf-life dating method of the packaged foods. Consumers consider that open shelf-life dating to the packaged foods gives good information to choose the products to buy, but also confusion with unclear open shelf-life dating marked on the package. For the perishable foods, consumers tended to get more attention to the open shelf-life dates. Consumers prefer the dating method of edible periods better than sellable periods to the packaged foods. The female consumers consider that open shelf-life dating is more important to buy the packaged foods than male consumers do.

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Anthocyanin - A Natural Dye for Smart Food Packaging Systems

  • Singh, Suman;Gaikwad, Kirtiraj K.;Lee, Youn Suk
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.24 no.3
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    • pp.167-180
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    • 2018
  • Interest in the use of smart packaging systems for food products has increased in recent years. Therefore, food researchers are focusing on the development of new indicator based smart packaging technologies by using anthocyanin-based natural dye. Anthocyanins are one of the plant constituents known as flavonoids and responsible for the bright and attractive orange, red, purple, and blue colors of most fruits, vegetables, flowers, and some cereal grains. Indicators of natural dyes such as anthocyanins could express the quality and shelf life of perishable food products. However, the sensitivity and stability for their use in smart food packaging should be established to reach the market proposals. This review article focuses on recent studies related to use of natural dyes based on anthocyanin for smart food packaging applications. This study offers valuable insight that may be useful for identifying trends in the commercialization of natural dyes or for identifying new research areas. This review also provides food and packaging scientists with a thorough understanding of the benefits of anthocyanin-based natural dyes for shelf life indicator when applied to package material specific foods and hence can assist in accelerating commercial adoption.