[en] 'It was worth spending forty years in physics to have friends like these,' confessed Val Telegdi at the end of the special meeting organized at CERN in July to mark his 65th birthday

[en] An optimal trajectory design of a module for the planetary landing problem is achieved by minimizing the control effort expenditure. Using the calculus of variations theorem, the control variable is expressed as a function of costate variables, and the problem is converted into a two-point boundary-value problem. To solve this problem, the performance measure is approximated by employing a trigonometric series and subsequently, the optimal control and state trajectories are determined. To validate the accuracy of the proposed solution, a numerical method of the steepest descent is utilized. The main objective of this paper is to present a novel analytic guidance law of the planetary landing mission by optimizing the control effort expenditure. Finally, an example of a lunar landing mission is demonstrated to examine the results of this solution in practical situations

[en] Exploration expenditures (especially in constant dollars) are a good indicator of exploration activity and there is an excellent correlation between them and uranium price with the influence of a price increase in uranium greatest one to two years after the price change. Recent prices, though increasing from all-time lows, still remain relatively low when expressed in constant dollars. This, as yet, modest price increase though can still be expected to stimulate significantly increased exploration activity. However, since the impact can be expected to be seen only one to two years after a price increase, any increases in exploration will still be in progress and will only be fully revealed over the next several years. With reactor requirements to be increasingly met by primary production in coming years, it is necessary to ensure that sufficient new discoveries of uranium are made to permit expansion of production capability as secondary sources decline. Increased exploration activity will be needed to provide the resource base needed to build new or expand existing production capability. An analysis of historical information indicates that past price increases have resulted in increased exploration. Recent price increases, therefore, can be expected to begin the increased exploration needed to support the expansion of uranium production capability

[en] Over the next 3-5 years, Canadian oil companies are preparing themselves for expected significant growth in the future. While the companies are expanding in new territories, so is their expenditure. Over the last 6 years, operational costs have more than doubled. The costs are rising due to labour and operational intensity which in turn drives the complexity of these projects. This presentation suggests options that may reduce the cost per barrel while ensuring a stable, reliable and sustainable base for future growth. The first suggestion is to optimize the hydrocarbon value chain from end-to-end. This would reduce volatility and increase output volumes and revenues. In order to reduce waste, the approach should be to start from the market and work right through to the suppliers. Simplifying and standardizing methods, processes and equipment will lead to further reduction in waste. The presentation also maintains that there should not be an increase in production if the current output is unpredictable as this will further increase volatility.

[en] The petroleum industry plans to cut U.S. capital and exploration spending in 1992 after boosting outlays the past 2 years. This paper shows U.S. companies plan to spend $32.5 billion on domestic projects this year, compared with $34.6 billion in outlays in 1991

[en] The novel ''femtocell'' in Heterogeneous Network (HetNet) for LTE-Advanced (LTE-A) set-up will allow Malaysian wireless telecommunication operators (Maxis, Celcom, Digi, U-Mobile, P1, YTL and etc2.) to extend connectivity coverage where access would otherwise be limited or unavailable, particularly indoors of large building complexes. A femtocell is a small-sized cellular base station that encompasses all the functionality of a typical station. It therefore allows a simpler and self-contained deployment including private residences. For the Malaysian service providers, the main attractions of femtocell usage are the improvements to both coverage and capacity. The operators can provide a better service to end-users in turn reduce much of the agitations and complaints. There will be opportunity for new services at reduced cost. In addition, the operator not only benefits from the improved capacity and coverage but also can reduce both capital expenditure and operating expense i.e. alternative to brand new base station or macrocell installation. Interference is a key issue associated with femtocell development. There are a large number of issues associated with interference all of which need to be investigated, identified, quantified and solved. This is to ensure that the deployment of any femtocells will take place successfully. Among the most critical challenges in femtocell deployment is the interference between femtocell-to-macrocell and femtocell-to-femtocell in HetNets. In this paper, all proposed methods and algorithms will be investigated in the OFDMA femtocell system considering HetNet scenarios for LTE-A

No abstract available

[en] Analysis in the 2003 edition of the Red Book shows that primary production of uranium has been less than reactor requirements since the mid-1980s and secondary sources have made up the difference. One result of the availability of secondary sources has been a consistently depressed market price for uranium over the past several decades. This low market price led to the curtailment of exploration in many areas and the closing and/or consolidation of many uranium production companies and production centers during that period. Consequently, during this time the level of uranium exploration has been at low levels and mainly oriented toward development. Yet, after 2020, when secondary sources of uranium are expected to decline in availability, reactor requirements will have to be increasingly met by primary production. To meet this increasing demand, primary production capability will need to significantly increase. As a first step, new exploration will be needed to provide the increased resource base necessary to support this expansion. Yet, a barrier to new exploration has been the low price for uranium. Over the past several years, though, there has been a significant increase in uranium market price. Beginning in 2001, the price of uranium has rebounded from lows not seen since the early-1970s, almost 200% through July 2004. Will this increase in market price result in the increased exploration needed to support new production capability? But what does the data contained in the past editions of the Red Book tell us of the behaviour of the exploration companies with respect to price? Is this sector of the uranium industry open and competitive? Will it respond to recent price increases? To begin to answer these questions, a review of the information collected over the past 40 years was conducted to attempt to determine whether the exploration sector could be expected to respond to this, as yet, relatively modest price recovery and in what time frame would increased exploration be expected to result. Data was consistently available from 1970-2002 for the world as a whole in current United States dollars. Data was also available for a number of key individual countries for the period 1975-2002 both in local currency and in United States dollars. Prior to 1989, however, world data does not include the countries associated with the former Soviet Union and certain other non-western countries, e.g. China and Mongolia and so represents only a sample of world activity and not the entire population. Similar analyses were conducted for specific countries that are important uranium producers and for which sufficient data exists, i.e. Australia, Canada, Niger and the United States. As can be seen, in all cases exploration expenditure shows a strong correlation to uranium price. The results suggest that exploration is a competitive and open sector of the uranium industry, sensitive to uranium price and aggressively responds to market signals. The projections indicate that given even this relatively modest price increase exploration expenditures can be expected to increase significantly above recent levels. These changes should be evident almost immediately in Niger, over the next year in Canada, the United States and in overall world expenditures, while over the next two years in Australia. Data for the latest exploration expenditures are not yet available to verify whether market behavior is indeed following as predicted, but press reports are providing circumstantial, anecdotal indication that exploration activity is already picking up in Australia, Canada and the United States leading to the conclusion that data will likely show an increasing trend. It is concluded that exploration expenditures (especially in constant dollars) are a good indicator of exploration activity and there is an excellent correlation between them and uranium price with the influence of a price increase in uranium greatest one to two years after the price change. With reactor requirements to be increasingly met by primary production in coming years, it is necessary to ensure that sufficient new discoveries of uranium are made to permit expansion of production capability as secondary sources decline. Increased exploration activity will be needed to provide the resource base needed to build new or expand existing production capability. An analysis of historical information indicates that past price increases have resulted in increased exploration. Recent price increases, therefore, can be expected to begin the increased exploration needed to support the expansion of uranium production capability

[en] The regulatory research program of Canada's Atomic Energy Control Board (AECB) is intended to augment the AECB's research program beyond the capability of in-house resources. The overall objective of the research program is to produce pertinent and independent information that will assist the Board and its staff in making correct, timely and credible decisions on regulating nuclear energy. The program covers the following areas: the safety of nuclear facilities, radioactive waste management, health physics, physical security, and the development of regulatory processes. Sixty-seven projects are planned for 1987/88; as well, there are some projects held in reserve in case funding becomes available. This information bulletin contains a list of the projects with a brief description of each

[en] The current paradox facing the North Sea offshore industry is that while it is experiencing a current market boom, within two years contractors may be scrambling around in a much reduced market. West Europe is running at a massive $15.1 billion. A veritable feast giving contractors, especially in Norway, a full workload and the headache of a severe skilled workforce shortage. Themes discussed cover Norwegian needs, Danish developments, UK utilisation, Dutch demand, and new breed. 4 figs