ПОСТАНОВКА И РЕШЕНИЕ ЗАДАЧИ ОПЕРАТИВНОЙ КОРРЕКЦИИ ПОТОКОВ ПРИЛЕТА И ВЫЛЕТА ВОЗДУШНЫХ СУДОВ В РАЙОНЕ АЭРОДРОМА С ПОМОЩЬЮ ГЕНЕТИЧЕСКОГО АЛГОРИТМА

The improvement in the effectiveness of airfield operation largely depends on the problem solving quality on the interaction boundaries of different technological sections. One of such hotspots is the use of the same runway by inbound and outbound aircraft. At certain intensity of outbound and inbound air traffic flow the conflict of aircraft interests appears, where it may be quite difficult to sort out priorities even for experienced controllers, in consequence of which mistakes in decision-making unavoidably appear.In this work the task of response correction of landing and takeoff time of the aircraft using the same RW, in condition of the conflict of interests “arrival – departure” at the increased operating intensity is formulated. The choice of optimal solution is made taking into account mutual interests without the complete sorting and the evaluation of all solutions.Accordingly, the genetic algorithm, which offers a simple and effective approach to optimal control problem solution by providing flight safety at an acceptably high level, is proposed. The estimation of additional aviation fuel consumption is used as optimal choice evaluation criterion.The advantages of the genetic algorithm application at decision-making in comparison with today’s “team” solution of the conflict “departure – arrival” in the airfield area are shown.Повышение эффективности работы аэродрома в значительной степени зависит от качества решения проблем на границах взаимодействия различных технологических участков, в том числе использование одной взлетно-посадочной полосы (ВПП) прилетающими и вылетающими воздушными судами (ВС). При определенной интенсивности вылетающего и прилетающего потоков движения воздушных судов неизбежно возникает конфликт их интересов, где расставить приоритеты зачастую бывает сложно даже для опытных диспетчеров, вследствие чего возникают ошибки при принятии решения.В данной работе сформулирована задача оперативной коррекции времени посадки и взлета воздушных судов, использующих одну ВПП в условиях возникновения конфликта интересов «прилет-вылет» при повышенной операционной интенсивности. Выбор варианта оптимального решения производится с учетом обоюдных интересов без полного перебора и оценки всех вариантов решения.В этой связи предложен генетический алгоритм, предлагающий простой и эффективный подход к решению задачи выбора оптимального управления при обеспечении безопасности полетов на приемлемо высоком уровне. В качестве критериев оценки оптимальности выбора используется оценка дополнительного расхода авиационного топлива.Показаны преимущества применения генетического алгоритма при выборе решения по сравнению с принятым сегодня «командным» вариантом разрешения конфликта вылета и прилета в районе аэродрома

CMS physics technical design report : Addendum on high density QCD with heavy ions

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Formulation of multicriteria problem of routing and scheduling of manned and unmanned aircraft in a dynamic environment and approach to its solution using genetic algorithms

The article deals with the multi-criteria task of routing and scheduling of unmanned and manned aircraft using the method of penalty functions. The authors describe the urgency of the problem being solved for the airline management under the conditions of the existing changes in the dynamic situation with a great variety of flight situations. A mathematical statement of the problem is formulated and a universal optimality criterion is proposed in the form of a sum of additive and multiplicative forms, including partial quality indicators. The search for optimal and rational solutions to the problem of optimal flight routing, taking into account the airline fleet resources, airspace users' offers, constant and variable restrictions, associated, for example, with unfavorable weather conditions, can be implemented using a one-criteria and multi-criteria approach, but as a result, it is proposed to use a genetic algorithm that has low computational complexity and offers as solutions ("ancestors"), close to the optimal and rational result.  With this approach, an "elite" is formed at the beginning of the algorithm, which allows the crossing operation to be performed at each step of the iteration (evolution). As a result, we get new "descendants", and by rearranging at least one item from one block to the next one, we can get a sufficiently large number of representatives, from which a new "elite" can be selected with the help of the criterion. The practice of using genetic algorithms has shown that along with the achievement of a global extremum with it, the process of substantial improvement of planning results is achieved in several evolution steps, and their number is clearly less than the number of steps when using numerical methods of parametric optimization.  The proposed approach will significantly improve the efficiency and quality of flight planning for the airline, taking into account the diversity of aircraft fleet, payload and environmental impact. This task is especially important under the conditions of joint management (CDM), where aeronautical data can be considered as additional criteria

NEW METHOD OF PREVENTION OF IRONDEFENSE ANEMIA IN PREGNANT TEENS

The paper presents an assessment of the effectiveness of the method proposed by the authors for the prevention of iron deficiency anemia in minor pregnant women. In the first stage, 593 histories of childbirth were retrospectively analyzed (group 1 — minors 13-15 years (n = 49), 2 group — minors 16-17 (n = 434), 3rd group — middle reproductive age (n = 110) ). In the second stage, a prospective study of the frequency and structure of anemia of pregnant women was carried out (group 1 — minors aged 13-15 years (n = 17), group 2 — minors 16-17 (n = 127), 3rd group — women of middle reproductive age (n = 110)). At the III stage, minor pregnant women were divided into two groups: in 1 (main) group (n = 144), iron deficiency anemia was prevented according to the method we proposed; in the 2nd group (comparison group) traditional therapy with iron preparations was carried out at the appearance of signs of anemia. The essence of the proposed method is that an minor pregnant woman, without waiting for laboratory signs of anemia, is examined for ferritin in venous blood, and at a value below 35 ng/ml, oral iron preparations are prescribed in conventional preventive doses for a period of 3 months, and if through three months the content of ferritin in the venous blood is again below 35 ng/ml — the intake of iron-containing preparations continues for another 3 months. The use of the proposed method contributed to a significant decrease in the incidence of anemia in minor pregnant women. The proposed method of preventing iron deficiency anemia in minor pregnant women helps to reduce the frequency and severity of anemia in this complex category of patients