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This paper aims to numerically study the compositional flow of two- and three-phase fluids in one-dimensional porous media and to make a comparison between several upwind and central numerical schemes.

Implicit pressure explicit composition (IMPEC) procedure is used for discretization of governing equations. The pressure equation is solved implicitly, whereas the mass conservation equations are solved explicitly using different upwind (UPW) and central (CEN) numerical schemes. These include classical upwind (UPW-CLS), flux-based decomposition upwind (UPW-FLX), variable-based decomposition upwind (UPW-VAR), Roe’s upwind (UPW-ROE), local Lax–Friedrichs (CEN-LLF), dominant wave (CEN-DW), Harten–Lax–van Leer (HLL) and newly proposed modified dominant wave (CEN-MDW) schemes. To achieve higher resolution, high-order data generated by either monotone upstream-centered schemes for conservation laws (MUSCL) or weighted essentially non-oscillatory (WENO) reconstructions are used.

It was found that the new CEN-MDW scheme can accurately solve multiphase compositional flow equations. This scheme uses most of the information in flux function while it has a moderate computational cost as a consequence of using simple algebraic formula for the wave speed approximation. Moreover, numerically calculated wave structure is shown to be used as a tool for a priori estimation of problematic regions, i.e. degenerate, umbilic and elliptic points, which require applying correction procedures to produce physically acceptable (entropy) solutions.

This paper is concerned with one-dimensional study of compositional two- and three-phase flows in porous media. Temperature is assumed constant and the physical model accounts for miscibility and compressibility of fluids, whereas gravity and capillary effects are neglected.

The proposed numerical scheme can be efficiently used for solving two- and three-phase compositional flows in porous media with a low computational cost which is especially useful when the number of chemical species increases.

A new central scheme is proposed that leads to improved accuracy and computational efficiency. Moreover, to the best of authors knowledge, this is the first time that the wave structure of compositional model is investigated numerically to determine the problematic situations during numerical solution and adopt appropriate correction techniques.

Presents over sixty abstracts summarising the 1999 Employment Research Unit annual conference held at the University of Cardiff. Explores the multiple impacts of globalization on work and employment in contemporary organizations. Covers the human resource management implications of organizational responses to globalization. Examines the theoretical, methodological, empirical and comparative issues pertaining to competitiveness and the management of human resources, the impact of organisational strategies and international production on the workplace, the organization of labour markets, human resource development, cultural change in organisations, trade union responses, and trans‐national corporations. Cites many case studies showing how globalization has brought a lot of opportunities together with much change both to the employee and the employer. Considers the threats to existing cultures, structures and systems.

We examine whether firms’ multinationality leads to better performance and what the role of R&D investment is in the multinationality performance linkage. Unlike the previous studies, we employ both accounting‐ and market‐based measures of firm performance for a large sample of U.S. manufacturing firms. Our results show that the empirical relation between multinationality and performance is not monotonic but varies with the phase of a firm’s multinationality, starting with a negative relation initially, followed by a positive one, and then again a negative one. This horizontal S‐shaped curvilinear relation of multinationality is more pronounced for the market‐based performance measure and is supportive of the three‐stage theory of internationalization. We also find that a firm’s multinationality is related to greater firm performance when the firm possesses R&D investment, and that the effect of R&D increases with the extent of a firm’s multinationality. These results lend strong support for the Internalization theory and the resource‐based view of firms’ international expansion. Our results are robust to different model specifications with an alternative measure of multinationality.

Draws together existing research on capital markets to understand how dividend/price ration and dividend growth predict movements in share prices. Analyses data from the UK stock market from January 1995 to December 1996 to test out two hypotheses ‐ the first, that there are no significant lag effects from stock price determinants (dividend/price ratio or dividend growth) to real stock returns; the second being the “information hypothesis” of dividends, which predicts that unexpected changes in dividend payments (for example, an increase in dividend payout ratio) may “signal” changes in future returns to investors, thereby leading to higher returns. Points out that this second hypothesis is consistent with the efficient market hypothesis. Analyses the movements in stock returns using Granger causality tests and finds that dividend/price ratio predicts real stock returns for the UK stock market, and that there is a strong relationship between real stock returns and dividend yields. Argues that this is consistent with the “information hypothesis”.

January 20, 1967 Building — Safety regulations — “Edge of the roof” — Asbestos roof — Construction — Adjustment of badly laid sheet —Fall of workman through opening in roof — Whether fall from edge — Applicability of regulation — Subcontractors' failure to comply with statutory requirements — Injury to subcontractors' employee — Liability of contractor — Whether contractor “undertaking” operations — Whether work “performed” by contractor — Building (Safety, Health and Welfare) Regulations, 1948 (S. I. 1948 No. 1145), regs. 4, 31(1), (3).

Develops an original 12‐step management of technology protocol and applies it to 51 applications which range from Du Pont’s failure in Nylon to the Single Online Trade Exchange for Auto Parts procurement by GM, Ford, Daimler‐Chrysler and Renault‐Nissan. Provides many case studies with regards to the adoption of technology and describes seven chief technology officer characteristics. Discusses common errors when companies invest in technology and considers the probabilities of success. Provides 175 questions and answers to reinforce the concepts introduced. States that this substantial journal is aimed primarily at the present and potential chief technology officer to assist their survival and success in national and international markets.

In 1967 Aslib Research and Development Department published a note describing experimental work on computer‐aided typesetting, and announcing that further research was planned. The proposed programme of work was carried out by the authors of the present paper, during their sojourns as members of the Department. The results are here reported.

Nobody concerned with political economy can neglect the history of economic doctrines. Structural changes in the economy and society influence economic thinking and, conversely, innovative thought structures and attitudes have almost always forced economic institutions and modes of behaviour to adjust. We learn from the history of economic doctrines how a particular theory emerged and whether, and in which environment, it could take root. We can see how a school evolves out of a common methodological perception and similar techniques of analysis, and how it has to establish itself. The interaction between unresolved problems on the one hand, and the search for better solutions or explanations on the other, leads to a change in paradigma and to the formation of new lines of reasoning. As long as the real world is subject to progress and change scientific search for explanation must out of necessity continue.

The following bibliography focuses mainly on programs which can run on IBM microcomputers and compatibles under the operating system PC DOS/MS DOS, and which can be used in online information and documentation work. They fall into the following categories:

The clustering of objects in a layered object storage system is by common consent an exceedingly difficult problem. Studies the performance of three heuristic placement algorithms. A series of eight reasonably realistic case studies were used as a benchmark battery, and several hundred experiments were carried out to evaluate results of using the algorithms. Presents the results and the insights gained from the study.