994 resultados para Dulles International Airport (Va.)


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"Members": v. 28, p. 365-463.

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Mode of access: Internet.

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Final report, issued Mar. 1978.

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Pt. 2 sold only by National Technical Information Service.

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Mode of access: Internet.

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"Project no. 197-623-01 R. SRDS report no. RD-69-41."

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This thesis describes an investigation into a Local Authority's desire to use its airport to aid regional economic growth. Short studies on air freight. the impact of an airport on the local economy, incoming tourism. and the factors influencing airlines in their use of airports, show that this desire is valid. but only in so far as the airport enables air services to be provided. A survey of airlines. conducted to remedy some deficiencies in the documented knowledge on airline decision-making criteria. indicates that there is cause for concern about the methods used to develop air services. A comparison with the West German network suggests that Birmingham is underprovided with international scheduled flights, and reinforces the survey conclusion that an airport authority must become actively involved in the development of air services. Participation in the licence applications of two airlines to use Birmingham Airport confirms the need for involvement but without showing the extent of the influence which an airport authority may exert. The conclusion is reached that in order to fulfill its development potential, an airport must be marketed to both the general public and the air transport industry. There is also a need for a national air services plan.

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A kötet azzal a céllal készült, hogy a Nemzetközi vállalatgazdaságtant tanulmányozók számára további támpontokat és ismeretbővítési lehetőségeket adjon magyar nyelven. A műhelytanulmány a nemzetközi üzleti gazdaságtan (international business) öt témaköréről ad áttekintést: az internalizációs elmélet, az intézményi megközelítés, a külpiacra lépés kisvállalati nézőpontból, a leányvállalatok lehetséges szerepei, és végül módszertani megfontolások. A korábbi kötetekhez hasonlóan, a műhelytanulmány fejezeteit a BCE Gazdálkodástani Doktori Iskola PhD hallgatói készítették. ----- The aim of the working paper is to provide insights on selected areas in international business. It is a supplement for the Hungarian language IB textbook. Five fields are covered in the working paper: internalization theory and its extensions, forming institutions in host countries, challenges of foreign market entry for small businesses, roles of subsidiaries in the multinational corporations, and methodological issues in IB. The chapters in the working paper were prepared by the PhD students of the Business and Management PhD School at Corvinus University of Budapest.

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Worldwide air traffic tends to increase and for many airports it is no longer an op-tion to expand terminals and runways, so airports are trying to maximize their op-erational efficiency. Many airports already operate near their maximal capacity. Peak hours imply operational bottlenecks and cause chained delays across flights impacting passengers, airlines and airports. Therefore there is a need for the opti-mization of the ground movements at the airports. The ground movement prob-lem consists of routing the departing planes from the gate to the runway for take-off, and the arriving planes from the runway to the gate, and to schedule their movements. The main goal is to minimize the time spent by the planes during their ground movements while respecting all the rules established by the Ad-vanced Surface Movement, Guidance and Control Systems of the International Civil Aviation. Each aircraft event (arrival or departing authorization) generates a new environment and therefore a new instance of the Ground Movement Prob-lem. The optimization approach proposed is based on an Iterated Local Search and provides a fast heuristic solution for each real-time event generated instance granting all safety regulations. Preliminary computational results are reported for real data comparing the heuristic solutions with the solutions obtained using a mixed-integer programming approach.

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To compare time and risk to biochemical recurrence (BR) after radical prostatectomy of two chronologically different groups of patients using the standard and the modified Gleason system (MGS). Cohort 1 comprised biopsies of 197 patients graded according to the standard Gleason system (SGS) in the period 1997/2004, and cohort 2, 176 biopsies graded according to the modified system in the period 2005/2011. Time to BR was analyzed with the Kaplan-Meier product-limit analysis and prediction of shorter time to recurrence using univariate and multivariate Cox proportional hazards model. Patients in cohort 2 reflected time-related changes: striking increase in clinical stage T1c, systematic use of extended biopsies, and lower percentage of total length of cancer in millimeter in all cores. The MGS used in cohort 2 showed fewer biopsies with Gleason score ≤ 6 and more biopsies of the intermediate Gleason score 7. Time to BR using the Kaplan-Meier curves showed statistical significance using the MGS in cohort 2, but not the SGS in cohort 1. Only the MGS predicted shorter time to BR on univariate analysis and on multivariate analysis was an independent predictor. The results favor that the 2005 International Society of Urological Pathology modified system is a refinement of the Gleason grading and valuable for contemporary clinical practice.