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Article
Publication date: 14 August 2017

Torsten Franzke, Eric H. Grosse, Christoph H. Glock and Ralf Elbert

Order picking is one of the most costly logistics processes in warehouses. As a result, the optimization of order picking processes has received an increased attention in…

Abstract

Purpose

Order picking is one of the most costly logistics processes in warehouses. As a result, the optimization of order picking processes has received an increased attention in recent years. One potential source for improving order picking is the reduction of picker blocking. The purpose of this paper is to investigate picker blocking under different storage assignment and order picker-route combinations and evaluate its effects on the performance of manual order picking processes.

Design/methodology/approach

This study develops an agent-based simulation model (ABS) for order picking in a rectangular warehouse. By employing an ABS, we are able to study the behaviour of individual order pickers and their interactions with the environment.

Findings

The simulation model determines shortest mean throughput times when the same routing policy is assigned to all order pickers. In addition, it evaluates the efficiency of alternative routing policies–storage assignment combinations.

Research limitations/implications

The paper implies that ABS is well-suited for further investigations in the field of picker blocking, for example, with respect to the individual behaviour of agents.

Practical implications

Based on the results of this paper, warehouse managers can choose an appropriate routing policy that best matches their storage assignment policy and the number of order pickers employed.

Originality/value

This paper is the first to comprehensively study the effects of different combinations of order picker routing and storage assignment policies on the occurrence of picker blocking.

Details

The International Journal of Logistics Management, vol. 28 no. 3
Type: Research Article
ISSN: 0957-4093

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Article
Publication date: 1 January 1991

Frank Castino and Lloyd Watson

The basic concepts in the application of computer simulationtechniques to materials handling and distribution problems areintroduced in the context of strategic planning…

Abstract

The basic concepts in the application of computer simulation techniques to materials handling and distribution problems are introduced in the context of strategic planning and option evaluation. Case studies are used to illustrate those concepts and the various techniques involved. The interaction required between client, materials handling system designer, and systems analyst to maximise the benefits from the use of sophisticated modelling tools is discussed.

Details

Logistics Information Management, vol. 4 no. 1
Type: Research Article
ISSN: 0957-6053

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Article
Publication date: 14 June 2019

Fabio Sgarbossa, Martina Calzavara and Alessandro Persona

Vertical lift module (VLM) is a parts-to-picker system for order picking of small products, which are stored into two columns of trays served by a lifting crane. A…

Abstract

Purpose

Vertical lift module (VLM) is a parts-to-picker system for order picking of small products, which are stored into two columns of trays served by a lifting crane. A dual-bay VLM order picking (dual-bay VLM-OP) system is a particular solution where the operator works in parallel with the crane, allowing higher throughput performance. The purpose of this paper is to define models for different operating configurations able to improve the total throughput of the dual-bay VLM-OP system.

Design/methodology/approach

Analytical models are developed to estimate the throughput of a dual-bay VLM-OP. A deep evaluation has been carried out, considering different storage assignment policies and the sequencing retrieval of trays.

Findings

A more accurate estimation of the throughput is demonstrated, compared to the application of previous models. Some use guidelines for practitioners and academics are derived from the analysis based on real data.

Originality/value

Differing from previous contributions, these models include the acceleration/deceleration of the crane and the probability of storage and retrieve of each single tray. This permits to apply these models to different storage assignment policies and to suggest when these policies can be profitably applied. They can also model the sequencing retrieval of trays.

Details

Industrial Management & Data Systems, vol. 119 no. 6
Type: Research Article
ISSN: 0263-5577

Keywords

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Article
Publication date: 8 February 2011

Gino Marchet, Marco Melacini and Sara Perotti

The purpose of this paper is to study the performances of “pick‐and‐sort” order‐picking systems (OPSs) and investigate picking efficiency and design issues as a function…

Abstract

Purpose

The purpose of this paper is to study the performances of “pick‐and‐sort” order‐picking systems (OPSs) and investigate picking efficiency and design issues as a function of the number and length of the picking waves.

Design/methodology/approach

An analytical model is proposed to estimate the picking efficiency as a function of wavelength. The model, which has been tested by simulations, includes an algorithm to estimate the expected overlapping of order lines. Finally, a case study illustrates the use of the model in the initial assessment phase of OPS design, and resolves the trade‐off between picking efficiency and sorting cost.

Findings

The effect of the wavelength on picking efficiency is calculated.

Research limitations/implications

The trade‐off analysis between picking efficiency and sorting cost refers to a specific sorting system and picking area layout.

Practical implications

The paper provides a tool to support the design of “pick‐and‐sort” OPS, where the importance of the length of the picking wave emerges.

Originality/value

This paper presents an innovative model that can be used in the initial phase of “pick‐and‐sort” OPS design.

Details

Journal of Manufacturing Technology Management, vol. 22 no. 2
Type: Research Article
ISSN: 1741-038X

Keywords

Content available
Article
Publication date: 14 August 2017

Peter McCullen

Abstract

Details

The International Journal of Logistics Management, vol. 28 no. 3
Type: Research Article
ISSN: 0957-4093

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Article
Publication date: 20 February 2020

Caroline Morito Pereira, Rosley Anholon, Izabela Simon Rampasso, Osvaldo L.G. Quelhas, Walter Leal Filho and Luis Antonio Santa-Eulalia

This article aims to investigate the most applied lean warehouse practices in Brazilian warehouses.

Abstract

Purpose

This article aims to investigate the most applied lean warehouse practices in Brazilian warehouses.

Design/methodology/approach

To perform this research, three phases were conducted: a literature review, a multiple case study, and an analysis of lean warehouses practices implementation by an engineering committee. Thus, both qualitative and quantitative approaches were used. Additionally, the study has an applied nature, with an exploratory and descriptive character.

Findings

Results showed that regardless of the type of criterion used, the most implanted practices are those that do not involve investments in technology. On the other hand, practices like RFID and Cross Docking systems were not found in any of the operations, which shows numerous possibilities for improvement.

Originality/value

The main contribution of this article is to initiate a debate about the management and productivity of Brazilian warehouses, a theme still little explored by the academic community despite the importance that the logistic scenario represents for Brazil as an emerging country and leader in Latin America, participating actively in several global supply chains.

Details

International Journal of Productivity and Performance Management, vol. 70 no. 1
Type: Research Article
ISSN: 1741-0401

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Article
Publication date: 12 July 2021

Marina Cardoso Guimarães, Guilherme Tortorella, Carlos Manoel Taboada, Moacir Godinho Filho and Felipe Martinez

This paper aims to examine the relationship between the main decisions for designing distribution centers (DCs) and the contextual characteristics of the distribution networks.

Abstract

Purpose

This paper aims to examine the relationship between the main decisions for designing distribution centers (DCs) and the contextual characteristics of the distribution networks.

Design/methodology/approach

Experts were surveyed and responses analyzed quantitatively through multivariate data techniques. This study considered four contextual characteristics that were deemed as influential for DC design: types of routes in the distribution network, quantity of DCs, distribution network levels and company size.

Findings

This paper evidenced which decisions are affected by each contextual characteristic encompassed in this study. This paper identified that the characteristic types of route in the distribution network must be carefully considered, as it had the greatest amount of associations with the decisions for designing a DC.

Originality/value

Despite its importance, most studies on design of DCs disregard the effect of the context in which DCs are inserted. This research provides arguments to support decision-making process of DCs design, increasing assertiveness of their planning. This work fulfills a literature gap by empirically examining the effect of contextual variables on the decisions related to DC design. Regarding practice, this paper addressed a fundamental issue for managers looking to design a DC, as it evidenced how contextual characteristics impact the decision-making.

Details

Journal of Facilities Management , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1472-5967

Keywords

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Article
Publication date: 1 October 1998

Nancy M. Dixon

As organizations move toward organizational learning the responsibilities of members change. Organizational members, themselves, should be giving consideration to what…

Abstract

As organizations move toward organizational learning the responsibilities of members change. Organizational members, themselves, should be giving consideration to what these new responsibilities should be, rather than leaving this task to management. Six possible responsibilities are suggested here to begin such a discussion. These responsibilities call on organizational members to accept greater responsibility for the generation and sharing of knowledge, but equally important is determining the organization’s purpose and sharing in its governance.

Details

The Learning Organization, vol. 5 no. 4
Type: Research Article
ISSN: 0969-6474

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Article
Publication date: 1 February 2000

Chin Chia Jane

Considering a relay order pick system in a distribution center, proposes a heuristic method based on historical customers’ orders for assigning products into storage…

Abstract

Considering a relay order pick system in a distribution center, proposes a heuristic method based on historical customers’ orders for assigning products into storage zones, and constructs a performance index for measuring the continuity of each order handled in the pick system. The objective is to balance workloads among all pickers so each one has almost the same load and the relay pick lane has a continuous flow. The proposed method is illustrated and verified to achieve the objective through empirical data and simulation experiments. Considering the fluctuation in order volume, presents two heuristic methods, also based on historical data, for adjusting the storage location so that the balanced workloads among all pickers and the continuity of the operation lane are not changed. These two methods are illustrated through actual data and verified by simulation experiments.

Details

International Journal of Physical Distribution & Logistics Management, vol. 30 no. 1
Type: Research Article
ISSN: 0960-0035

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Article
Publication date: 2 March 2015

Mark Edward Pickering

The purpose of this paper is to explore the implications on former accounting firm partners becoming employees of a publicly owned accounting corporation, the responses of…

Abstract

Purpose

The purpose of this paper is to explore the implications on former accounting firm partners becoming employees of a publicly owned accounting corporation, the responses of the former partners and impacts on the acquiring company. Partners of accounting and other professional service firms selling their firms to publicly owned companies often remain with the acquiring company as employees and receive company shares as consideration for their firms. Agency theory suggests public ownership will result in changes to the roles of senior professionals with potential resistance and motivation consequences.

Design/methodology/approach

This paper uses a case study approach involving the review of publicly available information and interviews with executives and senior professionals of an Australian publicly owned accounting company, Stockford Limited.

Findings

The Stockford case indicates that selling their firm to a publicly owned company can have significant negative implications for accounting firm partners. The former partners struggled to adapt to their new roles as senior professional employees and shareholders. Their responses had significant impacts on company performance, which ultimately contributed to the collapse of the company, thus reflecting the power senior professionals retain regardless of the change of ownership form.

Research limitations/implications

Care is required when generalising findings of a single case to other professions and other geographic jurisdictions.

Practical implications

This paper has significant implications for entrepreneurs and executives consolidating professional service firms, partners considering selling their firms and investors in publicly owned professional service firms.

Originality/value

Despite the emergence of publicly owned accounting and other professional service companies and the importance and power of senior professionals in professional service firms, this is the first study to explore the implications on senior professionals of selling their firms to public companies.

Details

Journal of Accounting & Organizational Change, vol. 11 no. 1
Type: Research Article
ISSN: 1832-5912

Keywords

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