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Article
Publication date: 1 October 1999

Charles G. Petersen

Order picking, the activity by which a number of goods are retrieved from a warehousing system to satisfy a number of customer orders, is an essential link in the supply…

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8015

Abstract

Order picking, the activity by which a number of goods are retrieved from a warehousing system to satisfy a number of customer orders, is an essential link in the supply chain and is the major cost component of warehousing. The critical issue is to simultaneously reduce the cost and increase the speed of the order picking activity. The main objectives of this paper are: evaluate various routing heuristics and an optimal routine in a volume‐based and random storage environment; compare the performance of volume‐based storage to random storage; and examine the impact of travel speed and picking rates on routing and storage policy performance. The experimental results show the solution gap between routing heuristics and optimal routing is highly dependent on the travel speed and picking rate, the storage policy, and the size of the pick list. In addition, volume‐based storage produced significant savings over random storage, but again these savings are dependent on the travel speed and picking rate.

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International Journal of Operations & Production Management, vol. 19 no. 10
Type: Research Article
ISSN: 0144-3577

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Article
Publication date: 1 September 1995

Tiffany A. Sargent and Michael G. Kay

Companies using just‐in‐time principles are currently moving fromcentralized to decentralized storage areas. A question that needs to beaddressed is whether this move is…

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1885

Abstract

Companies using just‐in‐time principles are currently moving from centralized to decentralized storage areas. A question that needs to be addressed is whether this move is cost efficient. Presents a costing model which can be used to determine if further consideration should be given to decentralized storage in a facility currently utilizing centralized storage. Evaluates whether the savings in material handling flow costs associated with moving from centralized to decentralized storage outweighs the additional costs associated with implementing and utilizing decentralized storage for a designated period of time. Through the process of solving the cost model, a new layout will be created for the decentralized storage system. The layout includes the placement of the additional material storage and receipt areas as well as the rearrangement of the other departments in the facility.

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International Journal of Operations & Production Management, vol. 15 no. 9
Type: Research Article
ISSN: 0144-3577

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Article
Publication date: 1 January 1988

Wah Ying Hui

Gas storage facilities are expensive and their siting is determined by the customer not the supplier. Accurate determination of optimum capacity is a “must”.

Abstract

Gas storage facilities are expensive and their siting is determined by the customer not the supplier. Accurate determination of optimum capacity is a “must”.

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International Journal of Physical Distribution & Materials Management, vol. 18 no. 1
Type: Research Article
ISSN: 0269-8218

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Article
Publication date: 1 August 2004

Charles G. Petersen, Gerald R. Aase and Daniel R. Heiser

Class‐based storage (CBS) partitions stock‐keeping units (SKUs) into storage classes by demand and randomly assigns storage locations within each storage class area. This…

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7366

Abstract

Class‐based storage (CBS) partitions stock‐keeping units (SKUs) into storage classes by demand and randomly assigns storage locations within each storage class area. This study compares the performance implications of CBS to both random and volume‐based storage (VBS) for a manual order picking warehouse. In addition, this study considers the effect of the number of storage classes, the partition of storage classes, and the storage implementation strategy applied in the warehouse. The simulation results show that CBS provides savings in picker travel over random storage and offers performance that approaches VBS. Other operational issues having an impact on warehouse performance are examined. The results offer managers insight for improving distribution center operations.

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International Journal of Physical Distribution & Logistics Management, vol. 34 no. 7
Type: Research Article
ISSN: 0960-0035

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Article
Publication date: 17 September 2021

Meiyi Zhang, Yi Luo, Dong Huang, Haimin Miao, Laping Wu and Junfeng Zhu

The purpose of this study was to estimate on-farm maize storage losses and to empirically analyse the main determinants of maize storage losses in China.

Abstract

Purpose

The purpose of this study was to estimate on-farm maize storage losses and to empirically analyse the main determinants of maize storage losses in China.

Design/methodology/approach

Based on a nationwide survey of 1,196 households in 23 provinces (autonomous regions and municipalities) in China, the authors estimated on-farm maize storage losses and used a fractional logit model to analyse the main determinants of maize storage losses in China.

Findings

The results showed that, first, 1.78% of maize was lost during the storage stage in China and that storage loss experienced by smallholders varied across regions. Second, the empirical analysis showed that storage quantities have significant and negative effects on storage losses and that an economy of scale in household storage may exist; the percentage of maize stored for consumption and feed has significant and positive effects on storage losses, which may be related to market requirements and management activities. Third, compared to traditional facilities, silos and warehouses cause lower storage losses, while spraying chemicals and re-drying maize in the storage stage incur higher losses, possibly because to save costs, smallholders conduct loss-reduction activities only when they suffer serious losses, and when taking measures, farmers may sort grains, which also increases losses. Fourth, harvesting maize when it matures is significantly associated with lower storage losses.

Research limitations/implications

To reduce storage losses, first, farmers' awareness of food saving and loss reduction must be increased. This could be achieved through agricultural training and education regarding food-saving practices. Second, the government could provide subsidies or low-interest credits to encourage farmers to use advanced facilities and promote land transfers to realize economies of scale. Finally, the government should accelerate the construction of smart agriculture systems and the timely monitoring of crop growth to suggest farmers to harvest at the appropriate time.

Originality/value

Reducing post-harvest loss (PHL) has become an important means of increasing the food supply and reducing resources use in China. This study provides a complete introduction to household maize storage losses and can therefore help characterize the current state of PHL in China, which is of vital importance to food security and food policy.

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China Agricultural Economic Review, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1756-137X

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Article
Publication date: 24 August 2021

Wenshou Yan and Kaixing Huang

During world price spike periods, the government is more likely to apply trade distortions to stabilize domestic prices, but the trade distortions would amplify…

Abstract

Purpose

During world price spike periods, the government is more likely to apply trade distortions to stabilize domestic prices, but the trade distortions would amplify fluctuations of international market prices. Which type of policy may stabilize the domestic market price, but not disturb the international market? This paper answers the question by taking public storage policy as a case study in the context of trade policy. Specially, this paper tries to identify the effect of domestic public storage on the world market price.

Design/methodology/approach

This article extends a standard theoretical model of trade policy through incorporating domestic public storage policy and makes the model more applicable in the context of China. The extended model is then applied to analysis how domestic public storage policy affects the international market price in the context of trade policy. Finally, a properly identified structural vector auto-regression technique is applied to test the effect of domestic public storage on the world market price by using cotton data from China.

Findings

The theoretical model indicates that China's public storage policy could stabilize the international market price. In order to test the working mechanisms, China's soaring public storage between 2010 and 2014 is employed to identify the effects of China's cotton storage on the volatility of the world price. The empirical findings show that China was able to stabilize the international price of cotton to a non-trivial extent through alteration of its public stockpile.

Originality/value

The first contribution is that this paper extends a standard theoretical model of trade policy to incorporate domestic public storage policy, which enables us to explore the effects of domestic public storage policy on the world price in the context of China. The second major contribution is that this paper provides evidence that, as a large player in the world market, China's public storage policy could stabilize the international agricultural price to a substantial degree.

Details

China Agricultural Economic Review, vol. 13 no. 4
Type: Research Article
ISSN: 1756-137X

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Book part
Publication date: 1 November 2007

Irina Farquhar and Alan Sorkin

This study proposes targeted modernization of the Department of Defense (DoD's) Joint Forces Ammunition Logistics information system by implementing the optimized…

Abstract

This study proposes targeted modernization of the Department of Defense (DoD's) Joint Forces Ammunition Logistics information system by implementing the optimized innovative information technology open architecture design and integrating Radio Frequency Identification Device data technologies and real-time optimization and control mechanisms as the critical technology components of the solution. The innovative information technology, which pursues the focused logistics, will be deployed in 36 months at the estimated cost of $568 million in constant dollars. We estimate that the Systems, Applications, Products (SAP)-based enterprise integration solution that the Army currently pursues will cost another $1.5 billion through the year 2014; however, it is unlikely to deliver the intended technical capabilities.

Details

The Value of Innovation: Impact on Health, Life Quality, Safety, and Regulatory Research
Type: Book
ISBN: 978-1-84950-551-2

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Book part
Publication date: 5 June 1996

Ronald W. Anderson

Abstract

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Agricultural Markets
Type: Book
ISBN: 978-0-44482-481-3

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Book part
Publication date: 1 January 2009

Catherine Murray-Rust

Library storage is traditionally viewed as a space management strategy, a way of dealing with overcrowded buildings and growing collections. Storage also is implicitly a…

Abstract

Library storage is traditionally viewed as a space management strategy, a way of dealing with overcrowded buildings and growing collections. Storage also is implicitly a preservation strategy: an alternative to weeding, cramming books tightly on shelves, stacking them on the floor, or not purchasing them in the first place. Among its obvious preservation benefits, storage provides security from theft and vandalism, and protection from spills and pests caused by increasingly prevalent food and drink in library buildings. Although transfer to storage may be risky for fragile materials, leaving them in stacks that are constantly being shifted is likely to be more damaging. Many storage facilities provide better environmental conditions for collections than old or poorly maintained modern library buildings.

Details

Advances in Librarianship
Type: Book
ISBN: 978-0-12-024627-4

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Article
Publication date: 12 July 2021

Mohammad Esmaeil Nazari and Mahsa Zarrini Farahmand

The purpose of this study is to solve the optimal operation strategy problem of plug-in electric vehicles (PEV) parking as a demand response (DR) program and hydro storage

Abstract

Purpose

The purpose of this study is to solve the optimal operation strategy problem of plug-in electric vehicles (PEV) parking as a demand response (DR) program and hydro storage as an energy storage system in a smart grid environment using a heuristic algorithm.

Design/methodology/approach

Studying the smart grid with DR, renewable energy resources and energy storage systems is necessary. To do this, the heuristic optimization algorithm is developed to solve the scheduling problem. This deterministic algorithm benefits from the definition of appropriate fitness functions.

Findings

For validation, it is shown that reduction of 1.1%–12.5% in pollution and 8.8%–34.8% in total cost are achieved, as compared with literature. Also, the suggested operation strategy of PEVs parking and hydro storage results in reducing the total cost by 6.21%.

Originality/value

DR programs such as PEV parking play a major role in smart grid developments. Also, energy storage systems such as hydro storage lead to better performance of distributed generations and lower costs and pollution by thermal units. However, based on the literature, the effects of PEV parking and hydro storage on smart grid operation strategy are not considered. Therefore, contributions of this study are: effects of hydro storage on the smart grid are considered, effects of PEV parking on the smart grid are considered, a heuristic algorithm is developed to solve operation strategy problem for PEV parking and hydro storage in a smart grid environment.

Details

International Journal of Energy Sector Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1750-6220

Keywords

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