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Article
Publication date: 5 September 2016

Damianos P. Sakas and Apostolos S. Sarlis

Twitter is the most popular instant messaging platform today. Thanks to the consistency factor typical of it, it offers every company or business the best opportunity to promote…

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Abstract

Purpose

Twitter is the most popular instant messaging platform today. Thanks to the consistency factor typical of it, it offers every company or business the best opportunity to promote their products or services. Likewise, it offers an unprecedented opportunity to public utility or benefit organizations like libraries to promote their services and build a powerful digital information exchange community. However, because of its immense number of users and chaotic nature, the steps toward making the best of it must be precise and systematized, or else the information professional will end up squandering resources to no avail. The purpose of this paper is the optimization of the distribution of the libraries’ resources regarding the promotion methods on Twitter.

Design/methodology/approach

Such a model is initially built by recording and analyzing the potential offered by the social network platform in question. Third-party tools that help handle Twitter are also analyzed. The factors’ total is then modeled by using the iThink editor. This editor is able to receive data from the decision-maker with respect to the specific attributes of each product and given conditions and produce specific outcomes by use of the model.

Findings

This research paper, includes a decision-making tool (model) that combines a theoretical view of library information science (LIS) and marketing science with a practical tool, simulating the process and producing certain outcomes using specific resources. The model presents him with the outcome that is bound to be produced with regard to the given circumstances and the amount of resources invested, encouraging, or not, certain courses of action.

Practical implications

The decision-maker can accurately anticipate an outcome so as to respectively customize his data and moves.

Originality/value

Proper use of the tools available, alongside anticipation chances offered by dynamic simulation models, enables the model decision-maker use it according to any given context, hence maximizing library business profits.

Article
Publication date: 5 August 2014

Damianos Sakas, Dimitris Vlachos and Dimitris Nasiopoulos

The purpose of this research work is to find a methodology for the strategic development of competitive advantage for information technology (IT) companies (Mezger and Violani…

2242

Abstract

Purpose

The purpose of this research work is to find a methodology for the strategic development of competitive advantage for information technology (IT) companies (Mezger and Violani, 2011). The ultimate aim of this project is to develop a methodological approach on this issue, based on dynamic simulation models (DSM) (Wirahadikusumah and Abraham, 2003). With the aid of DSM, senior managements of organizations will have the opportunity to make decisions of assured success. This success shall be guaranteed by the realization of entrepreneurial activity in a safe and inexpensive computing environment before actual investment.

Design/methodology/approach

This paper highlights the advantages of the dynamic modelling of systems aiming at developing competitive advantage for IT companies (Ordóñez de Pablos, 2006). In this research, we have used the science of design and the research methodology for testing the concept of modelling as well as the process of modelling. The models have been completed through a series of alternations and iterations in the design, development, simulation, testing and evaluation.

Findings

This paper examines the interface among several dimensions for the development of dynamic models. The validity and usefulness of those models in the process of decision-making has been confirmed by the usage of dynamic models in various sectors.

Originality/value

This paper applies the system and the concepts of dynamic modelling, which are pioneering elements as to their nature and evolution. Although the sector, where the modelling was applied, is an IT company, the concepts and principles investigated, developed and validated can be applied to most enterprises.

Details

Journal of Systems and Information Technology, vol. 16 no. 3
Type: Research Article
ISSN: 1328-7265

Keywords

Content available
Article
Publication date: 26 August 2014

Georgios A. Giannakopoulos and Damianos P. Sakas

96

Abstract

Details

Library Review, vol. 63 no. 6/7
Type: Research Article
ISSN: 0024-2535

Article
Publication date: 5 August 2014

Konstadinos Kutsikos, Nikolaos Konstantopoulos, Damianos Sakas and Yiannis Verginadis

The need for modern enterprises to seamlessly interoperate poses significant challenges on their capabilities for engaging in multiple business networks. This paper considers a…

Abstract

Purpose

The need for modern enterprises to seamlessly interoperate poses significant challenges on their capabilities for engaging in multiple business networks. This paper considers a particular type of business network, namely, “service ecosystems”, and proposes architecture for enabling business firms to: control dissemination and usage of the resources they contribute to the ecosystem; and develop corresponding service offerings.

Design/methodology/approach

A literature review informed our research work and contextualized the development of relevant research questions. The research questions were based on unstructured, creative techniques (e.g. brainstorming), combined with rigorous requirements specification for software tools developed as part of this research. Overall development was based on service science and enterprise interoperability research, distilled in four principles that provided the context and direction for this work.

Findings

Three key components of the proposed architecture were developed: service map, which identifies the building blocks needed to construct a service ecosystem; interoperability model, as a decision-making mechanism for dynamic (re-) arrangement of a service map’s building blocks; and shared service infrastructure for the provision of support services to all ecosystem participants.

Originality/value

This research has advanced current thinking in developing and managing service ecosystems. By adopting a service science viewpoint (service value co-creation, value-in-use), a holistic approach for building collaboration capabilities is described: at the enterprise level, it pertains to decision-making mechanisms for service provision; at the ecosystem level, it pertains to a software platform for managing common collaboration tasks.

Details

Journal of Systems and Information Technology, vol. 16 no. 3
Type: Research Article
ISSN: 1328-7265

Keywords

Article
Publication date: 5 August 2014

Theodoros Anagnostopoulos and Christos Skourlas

The purpose of this paper is to understand the emotional state of a human being by capturing the speech utterances that are used during common conversation. Human beings except of…

Abstract

Purpose

The purpose of this paper is to understand the emotional state of a human being by capturing the speech utterances that are used during common conversation. Human beings except of thinking creatures are also sentimental and emotional organisms. There are six universal basic emotions plus a neutral emotion: happiness, surprise, fear, sadness, anger, disgust and neutral.

Design/methodology/approach

It is proved that, given enough acoustic evidence, the emotional state of a person can be classified by an ensemble majority voting classifier. The proposed ensemble classifier is constructed over three base classifiers: k nearest neighbors, C4.5 and support vector machine (SVM) polynomial kernel.

Findings

The proposed ensemble classifier achieves better performance than each base classifier. It is compared with two other ensemble classifiers: one-against-all (OAA) multiclass SVM with radial basis function kernels and OAA multiclass SVM with hybrid kernels. The proposed ensemble classifier achieves better performance than the other two ensemble classifiers.

Originality/value

The current paper performs emotion classification with an ensemble majority voting classifier that combines three certain types of base classifiers which are of low computational complexity. The base classifiers stem from different theoretical background to avoid bias and redundancy. It gives to the proposed ensemble classifier the ability to be generalized in the emotion domain space.

Details

Journal of Systems and Information Technology, vol. 16 no. 3
Type: Research Article
ISSN: 1328-7265

Keywords

Article
Publication date: 4 September 2009

Nikolaos Konstantopoulos, Damianos Sakas and Yiannis Triantafyllopoulos

The purpose of this paper is to examine the factor “Staff's beliefs, attitudes and social representations” vis‐à‐vis the part it plays during the negotiation process in the effort…

2146

Abstract

Purpose

The purpose of this paper is to examine the factor “Staff's beliefs, attitudes and social representations” vis‐à‐vis the part it plays during the negotiation process in the effort of the two leaders of the Greek banking branch to merge.

Design/methodology/approach

The codification is attempted by means of software, so as to clarify the trends for negotiations in win‐win conditions. Data were collected by the negotiation process of two large banking companies.

Findings

The paper concludes that the private or public character of each banking organization involved in the negotiation process of aiming at a merger will affect its strategic choices in relation to the role played by human beliefs and professional attitudes during the negotiations. Additionally, the research has pointed out some elements that are explained and justified by the existing circumstances in the particular banking area. The fear of change, the stress, the insecurity and the loss of morale are also pointed out as being significant factors.

Originality/value

The paper is based on research of two different sectors – private and public – and how the employees of two organizations belonging to these sectors react and affect the result of the merger.

Details

Management Decision, vol. 47 no. 8
Type: Research Article
ISSN: 0025-1747

Keywords

Article
Publication date: 17 July 2009

Nikolaos Konstantopoulos, Damianos P. Sakas and Yiannis Triantafyllopoulos

The purpose of this paper is to examine the role of the variable stakeholder briefing in the successful completion of merger negotiations in the Greek banking branch.

1329

Abstract

Purpose

The purpose of this paper is to examine the role of the variable stakeholder briefing in the successful completion of merger negotiations in the Greek banking branch.

Design/methodology/approach

The codification is attempted by means of software, so as to clarify the trends for negotiations in win‐win conditions. Data collected by the negotiation process of two large banking companies.

Findings

The paper concludes that an important factor for the successful outcome of a merger is also the methodology of briefing enacted by the leaders of the banking branch during both the negotiation and merger process.

Originality/value

The two banks follow a different briefing strategy in the issue of stakeholder briefing as well but there is congruency in briefing strategies concerning substantial goals, because both banks develop in a market that modulates tactics of consuming and investing behaviors through forming an “opinion” by the image that the banks give to consumers and investors about their plans.

Details

Journal of Management Development, vol. 28 no. 7
Type: Research Article
ISSN: 0262-1711

Keywords

Article
Publication date: 4 April 2016

Ioannis C. Drivas, Damianos P. Sakas and Georgios A. Giannakopoulos

This paper aims to examine the Self-Other Agreement between leaders and employees in the sector of Libraries and Information Services (LIS) to construct a sustainable and…

Abstract

Purpose

This paper aims to examine the Self-Other Agreement between leaders and employees in the sector of Libraries and Information Services (LIS) to construct a sustainable and strategic communicational process among library directors and staff.

Design/methodology/approach

A sample of 135 leaders-employees of 17 organisations of LIS in more than five countries answered on a quantitative methodological research instrument in a multiplicity of variables. Statistical analysis of independent samples t-test was used to testify our research hypotheses.

Findings

Results indicated that there is a difference in means between the two independent samples (leaders-employees). There are library leaders who rate themselves quite high, and there are employees who rate their leaders with lower evaluations.

Research limitations/implications

This research extends and improves the matter of Self-Other Agreement in the sector of LIS through the collection of data that indicated a possible gap of communication and trustworthiness between leaders and employees.

Practical implications

Regardless of the difference or the consensus of ratings among leaders and employees, the results of this research could be served as a stimulus plus as a starting point for library leaders by correcting or developing relations of communication and trustworthiness between them and their followers.

Originality/value

Self-Other Agreement is one of the major factors that positively or negatively affect the overall operation of the organization in the way a leader could perceive the additional feedback. In the sector of LIS, the study of Self-Other Agreement is a rich and unexplored research area which deserves further analysis.

Article
Publication date: 4 April 2016

Damianos P. Sakas, Dimitrios S. Vlachos and Dimitrios K. Nasiopoulos

The integrated purpose of the libraries’ communication plan in general is to create and accomplish scientific events aiming, first of all, at covering the extensive demand for the…

Abstract

Purpose

The integrated purpose of the libraries’ communication plan in general is to create and accomplish scientific events aiming, first of all, at covering the extensive demand for the scientific conferences. Their primary objective is to raise the prestigious brand name of their organisation, which constitutes the organizing authority. At the same time, this authority, except for its non-profit charitable profile, aims to financial gains by attracting participants for its sustainability. Furthermore, these academic events have contributed to the utmost dissemination of the library’s brand name to an expanding mass of people to the extent of attracting new visitors (Broady-Preston and Lobo, 2011). One of the qualitative academic events, among others, is the creation of academic-nature events, whose following-up is blocked by a multitude of financial barriers according to the new visitors’ viewpoint. Considering the economic crisis, the purpose of this paper is the creation of interesting, in the science of library, online events, just like the online conferences (Broady-Preston and Swain, 2012).

Design/methodology/approach

This paper highlights the advantages of the dynamic modelling of systems aimed at developing a successful online conference. In this research, the authors have used the science of design and the research methodology for testing the concept of modeling.

Findings

This paper examines the interface among several dimensions for the development of dynamic models. The validity and usefulness of those models in the process of decision-making has been confirmed by the usage of dynamic models in various sectors.

Originality/value

This paper applies the system and the concepts of dynamic modelling, which are pioneering elements as to their nature and evolution.

Details

Library Review, vol. 65 no. 3
Type: Research Article
ISSN: 0024-2535

Keywords

Article
Publication date: 5 August 2014

Kamran Munir, Saad Liaquat Kiani, Khawar Hasham, Richard McClatchey, Andrew Branson and Jetendr Shamdasani

The purpose of this paper is to provide an integrated analysis base to facilitate computational neuroscience experiments, following a user-led approach to provide access to the…

Abstract

Purpose

The purpose of this paper is to provide an integrated analysis base to facilitate computational neuroscience experiments, following a user-led approach to provide access to the integrated neuroscience data and to enable the analyses demanded by the biomedical research community.

Design/methodology/approach

The design and development of the N4U analysis base and related information services addresses the existing research and practical challenges by offering an integrated medical data analysis environment with the necessary building blocks for neuroscientists to optimally exploit neuroscience workflows, large image data sets and algorithms to conduct analyses.

Findings

The provision of an integrated e-science environment of computational neuroimaging can enhance the prospects, speed and utility of the data analysis process for neurodegenerative diseases.

Originality/value

The N4U analysis base enables conducting biomedical data analyses by indexing and interlinking the neuroimaging and clinical study data sets stored on the grid infrastructure, algorithms and scientific workflow definitions along with their associated provenance information.

Details

Journal of Systems and Information Technology, vol. 16 no. 3
Type: Research Article
ISSN: 1328-7265

Keywords

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