Exploring the relationship between our learning,E-learning and HRD: E-Learn 2005 conference report

Abstract

This report provides a personal reflection on the E-Learn Conference held in Vancouver, Canada, in October 2005. First, I provide a brief review of previous conference reports and then share my experiences of this particular conference, focusing on technical, social, pedagogical and cultural aspects.     

The orbit problem is in the GapL hierarchy

The Orbit problem is defined as follows: Given a matrix A∈ℚ ^n×n and vectors x,y∈ℚ ⁿ , does there exist a non-negative integer i such that A ⁱ x=y. This problem was shown to be in deterministic polynomial time by Kannan and Lipton (J. ACM 33(4):808–821, 1986). In this paper we place the problem in the logspace counting hierarchy GapLH. We also show that the problem is hard for C₌L with respect to logspace many-one reductions.     

On the equitable k *-laceability of hypercubes

Let G be a finite undirected bipartite graph. Let u, v be two vertices of G from different partite sets. A collection of k internal vertex disjoint paths joining u to v is referred as a k-container C _k (u,v). A k-container is a k ^*-container if it spans all vertices of G. We define G to be a k ^*-laceable graph if there is a k ^*-container joining any two vertices from different partite sets. A k ^*-container C _k ^*(u,v)={P ₁,…,P _k } is equitable if ||V(P _i )|−|V(P _j )||≤2 for all 1≤i,j≤k. A graph is equitably k ^*-laceable if there is an equitable k ^*-container joining any two vertices in different partite sets. Let Q _n be the n-dimensional hypercube. In this paper, we prove that the hypercube Q _n is equitably k ^*-laceable for all k≤n−4 and n≥5. Dedicated to Professor Frank K. Hwang on the occasion of his 65th birthday. The work of H.-M. Huang was supported in part by the National Science Council of the Republic of China under NSC94-2115-M008-013.     

Institutional Strategies in Emerging Markets

Abstract

We review and integrate a wide range of literature that has examined the strategies by which organizations navigate institutionally diverse settings and capture rents outside of the marketplace. We synthesize this body of research under the umbrella term institutional strategies, which we define as the comprehensive set of plans and actions directed at leveraging and shaping socio-political and cultural institutions to obtain or retain competitive advantage. Our review of institutional strategies is focused on emerging market contexts, settings that are characterized by weak capital market and regulatory infrastructures and fast-paced turbulent change. Under such challenging conditions, strategies aimed at shaping the institutional environment may be especially critical to an organization's performance and long-term survival. Our review reveals that organizations engage in three specific and identifiable sets of institutional strategies, which we term relational, infrastructure-building, and socio-cultural bridging. We conclude by highlighting fruitful avenues for cross-disciplinary dialogue in the hope of promoting future research on emerging markets and defining the next frontier of institutional theory in organizational analysis.     

Participation of Women in the Journal of Organizational Behavior Management: An Update and Extension

ABSTRACT

A number of articles have examined the participation of women in behavior analysis research. However, most have excluded JOBM from the analysis. For this review, we coded participation of women yearly, since the inception of the journal. We examined participation of women overall, as first authors, as sole authors, and in empirical articles. We also assessed collaborations between genders and identified the ten most published women in JOBM. Next, we examined the current editorial board and associate editors to provide updated information on the participation of women in those roles. Overall, we found an increasing trend of participation of women over the years with participation approaching parity in most categories in the most recent years. Finally, we discussed these results and suggested greater attention be paid to increasing participation of other underrepresented groups.     

Distance graphs on R n with 1-norm

Suppose S is a subset of a metric space X with metric d. For each subset D⊆{d(x,y):x,y∈S,x≠y}, the distance graph G(S,D) is the graph with vertex set S and edge set E(S,D)={xy:x,y∈S,d(x,y)∈D}. The current paper studies distance graphs on the n-space R ₁ ⁿ with 1-norm. In particular, most attention is paid to the subset Z ₁ ⁿ of all lattice points of R ₁ ⁿ . The results obtained include the degrees of vertices, components, and chromatic numbers of these graphs. Dedicated to Professor Frank K. Hwang on the occasion of his 65th birthday. Supported in part by the National Science Council under grant NSC-94-2115-M-002-015. Taida Institue for Mathematical Sciences, National Taiwan University, Taipei 10617, Taiwan. National Center for Theoretical Sciences, Taipei Office.     

Postponement implementation in integrated production and inventory plan under deterioration effects: a case study of a juice producer with limited storage capacity

Abstract

The aim of this study is to develop a production and inventory plan for a fresh apple juice producer. During harvest season, the producer extracts premium juice from freshly picked apples and keeps an inventory of these premium apples in his temperature-controlled storage facility. The producer extracts also regular juice from regular apples purchased from third-party storages. To satisfy future demand, the producer carries inventories of juice and apple. The levels of apple inventories are constrained by the producer’s limited storage space, but he can replenish regular apples. To assist the producer in facing demand uncertainty and deterioration of apples, we develop a production and inventory plan that incorporates postponement to mitigate demand uncertainty. As postponement decisions are shaped by the cost structure of inventories, we integrate in one model the postponement decisions and the deterioration mitigation decisions that can alter the inventory costs. We build multi-period stochastic programming with recourse model to determine juice batch sizes and apple inventories that maximize the producer’s expected profit. The optimal solution illustrates the use of time and form postponements. We discuss the interactions between postponement implementation and decisions to mitigate apples deterioration. We compare the production and inventory plans with and without postponement and with and without apple deterioration. We also present sensitivity analyses for the plan under varying inventory cost and storage space.     

The Discussion of Behavioral Principles in JOBM

Abstract

We addressed the inclusion of behavioral analyses in the research and case study articles published in the Journal of Organizational Behavior Management (JOBM) over the past 5 years (1992–1997). The amount of behavior analysis included in JOBM articles appears to be greater than that found in JABA in the early 1980s. However, the presence of such analyses in JOBM can still be increased. Further, a significant number of articles do not mention how the particular intervention was chosen to address a specific organizational problem. This lack of a functional assessment makes it difficult for readers to decide if a proposed intervention is applicable to a situation with which they might be dealing. Additionally, we reviewed articles and examined the range of those behavioral principles discussed and found little diversity among the principles used. This paper serves to address some of the problems and ramifications associated with this separation and to offer suggestions as to how this situation could be improved.     

Manufacturing in the Nineties By H.J. STRUDEL and P.DESRUELLE(Van Nostrand Reinhold,New York, 1992). £31.50.

Abstract

Looking for a world model for the manufacturing information flow diagram has brought us to the conclusion that it is impossible to build an all-encompassing, all-inclusive system. The redundancy and overlap would make the system excessively complex and ineffective. The best way to generalize a model of this type is to simplify. The result is that we eliminate nearly the entire production control mechanism that is found in the labour intensive MRP system (Fig. 1). We come up with a system that is much closer to the material intensive JIT system (Fig. 2). The conclusion is that effective production control requires that you choose which resource you wish to optimize, and then select a system that controls the plant around the selected resource base. This is the function of books like International Management and Production. A second conclusion would be that complexity (MRP—Fig. 1) gains very little over simplicity (JIT—Fig. 2 or World Model—Fig. 4) in productivity or efficiency. As Shozo Hibino says in his book Breakthrough Thinking, we need to run our plants smarter, not harder.     

A People-Based Approach to OBM

Abstract

This rejoinder discusses some common points raised in the commentaries of this special issue of JOBM, including (1) different definitions of positive and negative, (2) use of the terms reinforcement and establishing operation, and (3) concerns over the abandonment of behavior analysis for mentalistic research. In addition, a people-based approach to psychology is introduced and advocated as a leading-edge approach to understanding and improving organizational behavior.     

The shortest path improvement problems under Hamming distance

In this paper, we consider the shortest path improvement problems under Hamming distance (SPIH), where the weights of edges can be modified only within given intervals. Two models are considered: the general SPIH problem and the SPIH problem with a single pair of required vertices. For the first problem, we show that it is strongly NP-hard. For the second problem, we show that even if the network is a chain network, it is still NP-hard.This paper is dedicated to Dr. Yong He.     

A discussion on economic ordering policy of deteriorated item for vendor and buyer

Yang and Wee (Economic ordering policy of deteriorated item for vendor and buyer: an integrated approach. Prod. Plan. & Cont., 2000, 11(5), 474–480) proposed an ordering policy for a vendor--buyer integrated model. This note examines the cost component of Yang and Wee's model and gives some insight on the derivation of the holding cost function. We have discovered that their model violates the positive holding cost characteristic and the total quantity-equality characteristic. A proposal to eradicate the problem is given.     

An Objective Review of the Journal of Organizational Behavior Management

Abstract

This article presents an objective review and analysis of every article published in the Journal of Organizational Behavior Management (JOBM) between 1987 and 1997. The purpose of this review was to replicate and extend the research conducted by Balcazar, Shup-ert, Daniels, Mawhinney, and Hopkins (1989) by providing an objective review and analysis of the second decade of JOBM publications. In doing so, we analyzed several noteworthy trends and patterns occurring within the second decade of the Journal and compared them with the first decade, where applicable. Additionally, we discussed the extent to which the Journal has continued to meet its objectives, and we offered recommendations for future JOBM publications. In general, we found evidence that the Journal has continued to grow in meaningful ways, and we report data that indicate it continues, to some extent, to meet its original objectives. Author affiliation remains largely in academe, although there is evidence that more collaboration is occurring with non-academic authors. The variety of topics addressed by JOBM researchers continues to grow, and the frequency of work simulation studies has increased as well. We also identified areas where future JOBM research could be improved. In particular, more studies should include information on the reliability and social validity of the independent and dependent variables, cost/benefit analyses, and follow-up data.     

A “maximum node clustering” problem

In this note we introduce a graph problem, called Maximum Node Clustering (MNC). We prove that the problem (which is easily shown to be strongly NP-complete) can be approximated in polynomial time within a ratio arbitrarily close to 2. For the special case where the graph is a tree, the problem is NP-complete in the ordinary sense; for this case we present a pseudopolynomial algorithm based on dynamic programming, and a related Fully Polynomial Time Approximation Scheme (FPTAS). Also, the tree case is shown to be exactly solvable in time, where n is the number of nodes.     

The development and validation of a job crafting measure for use with blue-collar workers

Abstract

Job crafting describes a set of proactive behaviours in which employees may engage to shape their work in order to minimize hindering job demands and maximize resources and challenging demands. Such behaviours may be particularly important among blue-collar workers whose jobs are characterized by poor working conditions and low well-being. We present the development and adaptation of a job crafting measure that may be used among blue-collar workers, based on an existing scale by Tims, Bakker, and Derks (2012) that was not specifically developed for blue-collar workers. We test the validity and reliability of the measure in a longitudinal study based on multiple source information from mail delivery workers in Denmark (N=362 at Time 1; N=408 at Time 2). Results indicate the presence of five job crafting dimensions: increasing challenging demands, decreasing social job demands, increasing social job resources, increasing quantitative demands and decreasing hindering job demands. These can be reliably measured with 15 items. The measure shows acceptable discriminant and criterion validity, and test-retest reliability. The findings extend the application of the original questionnaire. They also add to knowledge of the job crafting behaviours in which blue-collar workers engage and link them to well-being outcomes.     

10 Sociomateriality: Challenging the Separation of Technology,Work and Organization

Abstract

We begin by juxtaposing the pervasive presence of technology in organizational work with its absence from the organization studies literature. Our analysis of four leading journals in the field confirms that over 95% of the articles published in top management research outlets do not take into account the role of technology in organizational life. We then examine the research that has been done on technology, and categorize this literature into two research streams according to their view of technology: discrete entities or mutually dependent ensembles. For each stream, we discuss three existing reviews spanning the last three decades of scholarship to highlight that while there have been many studies and approaches to studying organizational interactions and implications of technology, empirical research has produced mixed and often‐conflicting results. Going forward, we suggest that further work is needed to theorize the fusion of technology and work in organizations, and that additional perspectives are needed to add to the palette of concepts in use. To this end, we identify a promising emerging genre of research that we refer to under the umbrella term: sociomateriality. Research framed according to the tenets of a sociomaterial approach challenges the deeply taken‐for‐granted assumption that technology, work, and organizations should be conceptualized separately, and advances the view that there is an inherent inseparability between the technical and the social. We discuss the intellectual motivation for proposing a sociomaterial research approach and point to some common themes evident in recent studies. We conclude by suggesting that a reconsideration of conventional views of technology may help us more effectively study and understand the multiple, emergent, and dynamic sociomaterial configurations that constitute contemporary organizational practices.     

Blockchain and the circular economy: potential tensions and critical reflections from practice

Abstract

Blockchain technology and the circular economy (CE) are two emergent concepts that can change the way we live for decades. Arrival of Industry 4.0 is set to transform organisational activities through various technological innovations. Blockchain is such a critical technology. Yet, the breadth of the blockchain concept and its application require nuanced investigation in different contexts, including examining some tensions with the applications. This paper examines how blockchain technology is likely to transform and advance circular economy realisation. Using grounded theory building from multiple case studies, we present early evidence linking the blockchain application to circular economy dimensions of regenerate, share, optimise, loop, virtualise, and exchange (ReSOLVE model). Case studies of blockchain application in various industrial sectors, at different adoption levels, for diverse organisational purposes are analysed and discussed. We systematically examine the practices, gaps, potential tensions, and critical reflections. Our study concludes with a summary of research propositions, limitations, and future research directions.     

Job insecurity,perceived employability and targets' and perpetrators' experiences of workplace bullying

Abstract

We aimed to investigate (1) the association between job insecurity and workplace bullying from the perspective of both targets and perpetrators and (2) perceived employability as a moderator of these relationships. We argue that job insecurity is associated with social or interpersonal strain as in the case of workplace bullying. Furthermore, workers who feel that they have alternative opportunities for employment may find it easier to cope with insecurity. Stated differently, we aimed to investigate whether the relationship between job insecurity and workplace bullying depended on the level of perceived employability. Hypotheses were tested among 693 workers who participated in a survey on the quality of working life. They were employed at establishments of two Belgian organizations from the textile industry (N=189) and financial services (N=505). We found that that job insecurity was associated with targets' and perpetrators' reports of workplace bullying. The interaction between job insecurity and perceived employability did not contribute to targets' reports of workplace bullying. However, it was related to perpetrators' reports of workplace bullying. Interestingly, the relationship between job insecurity and workplace bullying was stronger under the condition of high versus low employability. This hints at the idea that there could be a “dark side” to employability.     

Note: A note on the production and inventory systems taking account of time value

This paper deals with the optimal inventory decisions taking account of time value by applying the concept of the present value method, and modifies the bounds for the optimal cycle time described in Chung et al. (Production Planning & Control, 1998, 9, 580–584). A modified algorithm to compute the optimal cycle time is developed to improve the paper of Chung et al. Finally, a numerical example is given to illustrate the algorithm discussed in this paper.