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Article
Publication date: 27 November 2020

Petar Jackovich, Bruce Cox and Raymond R. Hill

This paper aims to define the class of fragment constructive heuristics used to compute feasible solutions for the traveling salesman problem (TSP) into edge-greedy and…

Abstract

Purpose

This paper aims to define the class of fragment constructive heuristics used to compute feasible solutions for the traveling salesman problem (TSP) into edge-greedy and vertex-greedy subclasses. As these subclasses of heuristics can create subtours, two known methodologies for subtour elimination on symmetric instances are reviewed and are expanded to cover asymmetric problem instances. This paper introduces a third novel subtour elimination methodology, the greedy tracker (GT), and compares it to both known methodologies.

Design/methodology/approach

Computational results for all three subtour elimination methodologies are generated across 17 symmetric instances ranging in size from 29 vertices to 5,934 vertices, as well as 9 asymmetric instances ranging in size from 17 to 443 vertices.

Findings

The results demonstrate the GT is the fastest method for preventing subtours for instances below 400 vertices. Additionally, a distinction between fragment constructive heuristics and the subtour elimination methodology used to ensure the feasibility of resulting solutions enables the introduction of a new vertex-greedy fragment heuristic called ordered greedy.

Originality/value

This research has two main contributions: first, it introduces a novel subtour elimination methodology. Second, the research introduces the concept of ordered lists which remaps the TSP into a new space with promising initial computational results.

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Article
Publication date: 1 August 2004

Omar A. El Sawy and Ann Majchrzak

This paper aims to identify and articulate critical research issues in the emerging area of real‐time knowledge management (RT‐KM) in enterprises, in order to stimulate…

Abstract

This paper aims to identify and articulate critical research issues in the emerging area of real‐time knowledge management (RT‐KM) in enterprises, in order to stimulate other researchers to further pursue them. The paper creates a framework around which it identifies and examines research issues and challenges that become salient and critical when knowledge sharing and creation need to happen in near real‐time. The framework is based on two drivers: increasing the requirements to plan for quickening the action‐learning loop in the enterprise, and increasing requirements in planning for emergence. The action‐learning loop is further articulated through the “observe, orient, decide, and act” (OODA) framework that is suited to sense‐and‐respond environments. Through the framework six sets of critical research challenges are identified around RT‐KM in enterprises: challenges around managing the quality of information in RT‐KM, challenges around improving the selective and intensive aspects of managerial attention in RT‐KM, challenges around making core business processes better suited to RT‐KM, challenges around integrating multiple distributed perspectives unpredictably in RT‐KM, challenges around developing heuristics in a way that allow real‐time emergence, and challenges around effectively capturing actions and learning for later reuse in RT‐KM. The issues and challenges identified are suggestive rather than exhaustive. Based on observations from real field case studies in industry, and driven by an industry need for better RT‐KM. This paper brings together the concepts of vigilant information systems, OODA loops, and emergence and applies them through a framework to identify research issues and challenges in this new emerging area of RT‐KM.

Details

Journal of Knowledge Management, vol. 8 no. 4
Type: Research Article
ISSN: 1367-3270

Keywords

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Article
Publication date: 1 March 2006

Keith Thomas and Stephen Allen

The need to create and apply knowledge has contributed to the prescription of a learning organisation. However, there is no easy answer to what this concept means. Also a…

Abstract

Purpose

The need to create and apply knowledge has contributed to the prescription of a learning organisation. However, there is no easy answer to what this concept means. Also a major criticism of the concept relates to the yet unclear connection between learning and performance. The purpose of this paper is to review the broad global literature to identify emergent themes, synthesised into a multilevel framework of process and structural attributes that reflects key theoretical relationships and attributes underwriting organisational learning and change

Design/methodology/approach

This paper is based on meta‐analysis of literature published about the learning organisation and organisational learning.

Findings

Finds a multilevel framework of process and structural attributes that reflects key relationships and attributes associated with learning and change.

Practical implications

The multi‐level model outlines a framework for future research that may seek to link learning and performance. The causal relationships identified also suggest practical implications for managers seeking to enact the learning organisation concept.

Originality/value

This paper synthesises the conceptual underpinnings of literature on the learning organisation into a practical framework.

Details

The Learning Organization, vol. 13 no. 2
Type: Research Article
ISSN: 0969-6474

Keywords

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Article
Publication date: 10 April 2017

Bernard L. Simonin

This paper aims to encourage greater clarity and stimulate further interest in thorough empirical research in the area of learning levels. The broader motivation here is…

Abstract

Purpose

This paper aims to encourage greater clarity and stimulate further interest in thorough empirical research in the area of learning levels. The broader motivation here is to urge researchers to not only theorize but also undertake elaborate and much needed empirical work.

Design/methodology/approach

Part I of the study rests on a reflection and review of the literature concerned with “N-loop learning”, that is, the different hierarchical levels and stages of organizational learning.

Findings

The study provides some views and classification schemes on how to reconcile and think about different levels of learning. Some learning archetypes are identified that guide further reflection and elaboration on learning stages and hierarchies.

Originality/value

“N-loop learning” is introduced to encapsulate and systematize a vast array of views, models and levels of organizational learning. From zero learning and single-loop learning to quadruple-loop learning, a series of learning archetypes are presented. The case for a proper and clear nomenclature of learning levels is singled out. Finally, a strong case for empirical testing in this area is advocated.

Details

The Learning Organization, vol. 24 no. 3
Type: Research Article
ISSN: 0969-6474

Keywords

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Article
Publication date: 8 May 2017

Bernard L. Simonin

Through a survey of firm’s experiences with strategic alliances and a structural equation modeling approach, the aim of this study is to stimulate further interest in…

Abstract

Purpose

Through a survey of firm’s experiences with strategic alliances and a structural equation modeling approach, the aim of this study is to stimulate further interest in modeling and empirical research in the area of N-loop learning. Although the concepts of single-loop and double-loop learning, in particular, are well established in the literature, limited research has been directed toward their empirical validation and finer understanding.

Design/methodology/approach

Based on a large sample of technology firms, a MIMIC model is proposed and tested with respect to the development of collaborative know-how via the adoption and conduct of different structural choices on how to deploy strategic alliances (single-loop vs double-loop approach). Results are cross-validated.

Findings

Based on the results of two structural equation models, the findings support the fit of the proposed conceptual model and the notion that, overall, the greater the extent of double-loop over single-loop learning, the higher the level of collaborative know-how derived.

Originality/value

The call for the empirical investigation of N-loop learning is met by providing an example of survey-based research. The possible benefits of “double-loop” over “single-loop” learning are modeled and tested empirically.

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Article
Publication date: 14 September 2010

Dane Lukic, Anoush Margaryan and Allison Littlejohn

This paper seeks to review current approaches to learning from health and safety incidents in the workplace. The aim of the paper is to identify the diversity of…

Abstract

Purpose

This paper seeks to review current approaches to learning from health and safety incidents in the workplace. The aim of the paper is to identify the diversity of approaches and analyse them in terms of learning aspects.

Design/methodology/approach

A literature review was conducted searching for terms incident/accident/near misses/disaster/crisis modified with learning/training and safety. Shortlisted articles were analysed by questioning who is learning, what kind of learning process is undertaken, what type of knowledge is employed and the type of problem that these incidents addressed. Current approaches to learning from incidents were critically analysed and gaps identified.

Findings

Very few papers addressed all the envisaged aspects when developing their learning from incidents approaches. With support from literature, it was concluded that all the four perspectives, namely participants of learning (participation and inclusion), learning process (single loop, double learning), type of incident and its relation to learning (Cynefin complexity framework) and types of knowledge (conceptual, procedural, dispositional and locative) are important when deciding on an appropriate learning from incidents approach.

Research limitations/implications

The literature review focused on journal articles and identified keywords, which might have narrowed the scope. Further research is needed in identifying ways to embed the learning from incidents aspects in the organisation.

Practical implications

The framework developed could be useful by safety planners, safety managers, human resource managers and researchers in the area of organisational learning and safety.

Originality/value

The paper concludes by outlining key questions and proposing a framework that could be useful in systematically analysing and indentifying effective approaches to learning from incidents.

Details

Journal of Workplace Learning, vol. 22 no. 7
Type: Research Article
ISSN: 1366-5626

Keywords

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Article
Publication date: 10 April 2009

Pankaj Agrrawal

The purpose of this paper is to develop an algorithm to harvest user specified information on finance portals and compile it into machine‐readable datasets for…

Abstract

Purpose

The purpose of this paper is to develop an algorithm to harvest user specified information on finance portals and compile it into machine‐readable datasets for quantitative analysis.

Design/methodology/approach

The Visual Basic macro language in Microsoft Excel is applied to develop code that is not constrained by the single‐query function of Excel. The core of the algorithm is built around the splitting of the URL connector line and the placement of a continuously updating variable into which are looped as many tickers as there are in the input list. The output is then written to non‐overlapping cells.

Findings

Numerical information placed on major finance websites can be harvested into structured machine‐readable datasets by applying this algorithm.

Research limitations/implications

One significant change in Microsoft Excel 2007 is that the worksheet is expanded from 224 to 234 cells, or to be more specific, from 256 (IV) columns × 65,536 rows (28 × 216) to 16,384 (XFD) × 1,048,576 (214 × 220). These new limits while allowing for a larger number of tickers, still constrain a single worksheet to 16,384 columns. For five fields per ticker that translates into roughly 3,200 ticker symbols.

Practical implications

The algorithm extends user accessibility to websites that do not provide the facility of simultaneous downloading of information on multiple stock tickers. Furthermore, the procedure automates the downloading of multiple pieces of information (fields) and entire tables per ticker (record).

Originality/value

An exhaustive literature search did not find any paper that discusses a multiple ticker algorithm for web harvesting.

Details

Managerial Finance, vol. 35 no. 5
Type: Research Article
ISSN: 0307-4358

Keywords

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Article
Publication date: 1 July 1998

L.M. Berry, B.A. Murtagh, G.B. McMahon, S.J. Sugden and L.D. Welling

Reviews the value of network concepts as a means of portraying complex logistics and distribution systems. Reports on research which focuses on the broader issues of model…

Abstract

Reviews the value of network concepts as a means of portraying complex logistics and distribution systems. Reports on research which focuses on the broader issues of model formulation and solution techniques rather than specific applications. Addresses the issues of designing networks with a tree structure, and also more general ones in which loops are allowed and redundancy enforced. The decision variables involved are related to whether or not a link should exist between two specific pairs of nodes, and then what should be the level of traffic flow on that particular link. Describes the design problem in detail and possible models that could be used to represent it. Follows with a description of genetic algorithms to solve the synthesis problem of deciding the node‐link topology, and the use of linear and non‐linear programming to solve the problem of assigning traffic flow to a network with a given typology in a least‐cost manner. Concludes with a description of computational experience with solving such problems.

Details

International Journal of Physical Distribution & Logistics Management, vol. 28 no. 5
Type: Research Article
ISSN: 0960-0035

Keywords

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Book part
Publication date: 14 September 2007

Mark Simon, Susan M. Houghton and G.T. Lumpkin

The entrepreneurs’ ability to identify opportunities can lead to wealth creation and competitive advantage. Often, however, opportunities that are innovative may defy…

Abstract

The entrepreneurs’ ability to identify opportunities can lead to wealth creation and competitive advantage. Often, however, opportunities that are innovative may defy up-front analysis suggesting that the entrepreneurs may have had somewhat inaccurate perceptions and need to refine their ideas after the ventures are started. This paper therefore focuses on mitigating the negative impact of early misperceptions through the use of learning-oriented information processing systems to refine opportunities post starting a venture. Specifically, it suggests that an experienced and heterogeneous top management team and a decentralized, organic structure enhance the system's ability to gain knowledge from acting on early misperceptions and may even form the basis for a distinctive capability that leads to competitive advantage.

Details

Entrepreneurial Strategic Processes
Type: Book
ISBN: 978-0-7623-1429-4

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Article
Publication date: 22 February 2008

Oriol Bayó‐Puxan, Josep Rafecas‐Sabaté, Oriol Gomis‐Bellmunt and Joan Bergas‐Jané

This paper seeks to describe why PLC's development tools can be used in the programming of C‐programmed microcontrollers, and an exhaustive methodology to compile Graphe…

Abstract

Purpose

This paper seeks to describe why PLC's development tools can be used in the programming of C‐programmed microcontrollers, and an exhaustive methodology to compile Graphe Fonctionnel de Commande Etapes‐Transitions (GRAFCET) specifications into C‐code.

Design/methodology/approach

This paper introduces an exhaustive methodology to translate a given GRAFCET into an equivalent C‐code, valid for embedded systems' microcontrollers.

Findings

The main contribution of the paper is the presented methodology, which reduces specification and programming times, while enhancing flexibility, maintenance and reusability.

Originality/value

Although this theme is not new, this paper presents a novel approach, filling the final gap: implementation into industrial systems.

Details

Assembly Automation, vol. 28 no. 1
Type: Research Article
ISSN: 0144-5154

Keywords

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