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The purpose of this study is to propose a mathematical optimization model to solve the yacht mooring area re-allocation problem (YMARP). The objective of the problem is to allow the maximum number of yachts to be moored at their ideal mooring areas.

In this paper, the YMARP is introduced, formally defined and discussed. The authors develop a 0-1 integer programing optimization model for the problem, which can be solved efficiently using off-shelf solvers. The performance of the model is tested on extensive numerical experiments.

The results of the numerical experiments demonstrate that the proposed model can solve the YMARP very efficiently using off-shelf solvers like CPLEX. In particular, problems with up to 30,000 yachts and 400 mooring areas can be solved to optimum within 30 s.

This study is one of the preliminary studies to consider problems arising in yacht management in a quantitative manner. The proposed model has three main merits. First, it enables the government to better manage yachts and mooring areas. Second, with more yacht owners assigned with ideal mooring areas, the model helps reduce the traveling time of the yacht owners to yacht mooring areas. Third, by reducing the traveling time of the yacht owners, the model contributes to lessening the traffic burden in cities.

THE army of young unemployed is a blot on our civilisation. That much would be agreed by all. That nothing very positive is being done about it is also all too evident.

THE Report of the Committee on Libraries, which was issued by the University Grants Committee in the summer of 1967, had for long been called the Parry Report after its Chairman, Dr. Thomas Parry, formerly Librarian of the National Library of Wales and at the time the Principal of University College of Wales in Aberystwyth. When it was first set up in June 1963 the terms of reference were as follows:

IN this issue there is a Letter to the Editor (page 42). Its author is D. A. Barron, Chief Work Study Engineer of Marconi's Wireless Telegraph Co. Ltd., at Basildon. The letter is important from two aspects. Firstly, because it enables the writer of this column to clear up any misconceptions lingering in people's minds regarding references to Charles Bedaux in past editorials appearing in this journal.

This study aims to explore how the use of mobile instant messaging (MIM) in an organization has led to the decentralization of authority.

To achieve this aim, a study was conducted on a case site that had used MIM extensively to manage an event.

This study found that communication technology such as MIM can shift more authority to the lower-level committees through the processes of formation, delegation, control and dissolution.

The role of information systems and technology in affecting a decentralization process has been largely understudied. Additionally, the effect of communication technologies such as MIM on a decentralization process has been largely ignored. Therefore, this study theorizes the role of MIM in managing an event and how the technology has decentralized more authority from the top management to the lower-level committees.