Search results

A conceptual model describes important factors within a system and how they relate to one another. They are important because they help to identify system changes that can yield the greatest improvement. Within information retrieval (IR), most research is directed towards multi-document retrieval and a multi-interaction IR user scenario. There are few, if any, IR conceptual models supporting minimal or single-interaction IR (siIR) user scenarios, however the need for siIR systems is growing rapidly. The purpose of this paper is to take the first step towards constructing a task-oriented conceptual model and experimental framework to support siIR research.

A first principles approach is employed to develop a task-oriented conceptual model, called bridging information retrieval (BIR). This model is contrasted with the concept of relevance, a central factor within IR research.

BIR introduces the central concept of bridging information (BI) as the objective of IR systems. BI is the additional information a user requires to complete a task, beyond their innate knowledge. The relationship between BI and relevance is determined.

The theoretical basis of BIR is derived axiomatically; however the resulting system evaluation model is speculative.

The proposed operational framework offers researchers a systematic approach to designing and evaluating siIR systems.

This work contributes a novel task-oriented IR conceptual model and evaluation framework, both centred around the concept of BI for siIR. It also contributes a novel search task classification method.

The purpose of this paper is to elucidate the main determinants of foreign direct investment (FDI) in the case of the Arab Maghreb countries.

We employ a dynamic panel analysis using the General Method of Moments for a sample composed of 105 countries over the period 1985–2018.

We show that FDI stability, market size, higher education enrolment, quality of institutions, distance, sharing of common border, and bilateral investment and integration agreements are the main determinants of FDI location. These determinants are neither general. The potential for attracting FDI from AMU countries is poorly exploited. FDI to the AMU is lower than estimated stock. The observed FDI to potential FDI ratio does not exceed 87%. France and Spain are the main investors in the AMU region thanks to historical and cultural links. The FDI from the United States, Canada, Germany, Belgium, and Japan are below what is expected.

The contribution of this paper is observed on the examining oh the determinants of the FDI in the Arab Maghreb countries. Our study demonstrate that the political stability can decrease investment risk in these countries. The administrations correspondingly require expanding their rules and strategies with union demonstrations which were at the beginning of the departure and closing of several foreign companies.

This paper presents an overview of past and present research projects associated with electronic document delivery. The paper briefly outlines the Follet Report and introduces the UK's Electronics Libraries Programme, including the recently funded Focused Investigation of Document Delivery (FIDDO) project at Loughborough University. Four research areas have been identified as follows: resource sharing projects; network communication projects; electronic scanning projects and electronic document delivery systems. Conclusions highlight the major impact that technological developments are currently having on this area, the need for librarians to reassess their role in the information chain, and the need for delivery systems capable of handling different formats and a wider coverage of material to satisfy requests.

This special “Anbar Abstracts” issue of Personnel Review is split into 8 sections covering abstracts under the following headings: Career/Manpower Planning and Recruitment; Health and Safety; Industrial Relations and Participation; Pay, Incentives and Pensions; Performance, Productivity and Motivation; Redundancy and Dismissal; Work Patterns; and Training and Development.

While the significance of principals for the organizational behavior of schools is crucial, school leaders’ influence on school outcomes is indirect and mediated through various means that leaders employ in order to increase the productivity of their school. Although the exercise of power is viewed among the main factors explaining followers’ willingness to comply with leaders’ demands and means to promote school effectiveness, it is rather surprising that the educational administration literature lacks substantial evidence testifying to the mediating effect that principals’ use of various powerbases has on school effectiveness. The purpose of this paper is to make an attempt to fill this gap.

Questionnaires were administered to 954 teachers coming from 191 randomly sampled public elementary schools.

Evidence testifying to the relation between leadership styles and use of powerbases suggests that the transformational leadership style is positively related to the use of soft powerbases and negatively related to the use of harsh powerbases. Findings also show that leadership style and powerbase utilization differentiate effective and ineffective schools. Finally, it is evident that soft powerbases such as expertise, personal reward and referent powerbases partially mediate the relation between the transformational leadership style and school effectiveness, moderating the negative relation found between the passive leadership style and school effectiveness.

These findings confirm that powerbases are in fact a mechanism through which school leaders influence school effectiveness. Implications are further discussed.