The reason behind publishing the article in this journal is that the author has been actively co-operating with academic workers involved in research in the area of military technology. This article presents some issues of language learning and teaching. The complexity of the process of language learning and language acquisition is clarified. The most frequent problems of adult language learners are approached from the point of view of both language specialists and learners - mostly technically oriented academic workers. Krashen's theory of language learning and language acquisition is explained. The process of language learning is a complicated and almost never-ending process. Each learner expects something different from language learning and each of them has also different pre-dispositions to learn a foreign language. There is no universal or ideal methodology to efficiently teach foreign languages.
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The article is a summarization of the project on the topic "Position optimization of cooperative arrays of adaptive ground unattended sensors". The article deals with the problems of position optimization of unattended ground monitoring systems in the digitized area of interest. The main aim of the mentioned project is finding and checking general procedures and methods to solve this problem. In this article, the present state of solved problems is defined. In short, the article describes design and discussion of the basic principles, procedures and possibilities of this problem solution. Next, the article deals very shortly with sensors models and the possibilities and features of optimization methods used for this problem solution. Also the article pursues some other problems relating to the topic and simulation checking of gathered theoretical pieces of knowledge and conclusions. At the conclusion this article presents practical and theoretical results of the mentioned project and its contribution.
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Miroslav JANOŠEK, Aleš SVOBODA
The article deals with the combat use of aircraft cannons in close-range aerial manoeuvering combat in terms of their usage and combat effectiveness. The specifics of air combat manoeuvering are analyzed as well as of Gatling cannons - the general formula can be applied to all cannons and a manoeuvering target. The emphasis is laid on the calculation of the probability of kill by a cannon burst, while particular factors, which influence this probability, are analysed. The further part compares the performance of chosen air cannons in terms of muzzle energies of variously long cannon bursts as well as the possibilities of cannon fire application of the most spread or perspective fighters. The conclusive part evaluates the chosen fighters in terms of the number of 1-second bursts they are able to deliver as well as of the overall muzzle energy of all their carried projectiles.
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It followed from the results of firing tests conducted with particulate grenade models under variable weather conditions in the field that the models generated a particulate aerodispersion in a cloud effective for a short time. The tested kinds of particles produced clouds of aerodispersions of similar sizes; the cloud diameters were increasing upwardly up to the 20th second after the explosive action of spreading the charge up to the value of diameter l = ~13 m in the case of Chezarb, l = ~20 m in the case of the S244 carbon fibres, l = ~22 m in the case of brass particles, and l = ~28 m in the case of aluminium particles. Particulate systems in the cloud showed good attenuating capabilities for a short time in the whole IR range of spectrum. The tests proved that their application in the multispectral protection of military objects is desirable.
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The paper deals with aircraft bombs with precise guidance systems. There is given the survey of trends, regarding the precise guided aircraft bombs with respect to the most convenient effect in the target, as well as the suitable aircraft carrier for the purpose assumed. The trends as well as construction arrangement correspond to the experiences gained from the latest war activities.
The bombing accuracy together with the plane safety is therefore very important characteristic of contemporary air forces.
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The paper deals with the influence of individual design characteristics of the pyro-system used for the recocking of the automatic cannon on the magnitude of the velocity of the piston which controls the mechanism recocking. The basic design characteristics are: the cross-section of the gas port SA, the acting area of the piston Sp,, the initial volume of the gas cylinder VA0 and the cross-section of the piston rod gap SGA. The paper utilizes the theory published in the paper  in AiMT No 1/2007.
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Hanuš ORT, Stanislav FLORUS
We measured the breakthrough times of laboratory gloves that are commonly used in laboratories and are easily accessible on protective equipment market. Standard measuring method of the Army of Czech Republic called MIKROTEST has been used to measure these breakthrough times. To measure breakthrough times this measuring method uses the distilled sulfur mustard [bis(2-chloroethyl) sulfide]. The breakthrough time has been measured separately for different parts of each type of laboratory gloves (fingers, palm, back and wristband). The thickness of all the different glove parts has also been measured using a quick thickness meter. The measurement results have been statistically processed and minimal breakthrough time values for separate glove parts and for the whole gloves (disregarding the point of measurement) have been determined. Altogether nine types of laboratory gloves have been the subject of breakthrough time measurement.
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Libor DRAŽAN, Roman VRÁNA
This paper deals with the high power microwave generator with virtual cathode - vircator. There are introduced pulsed power supply method of vircator, structure of axial vircator, measurement methods and experimental results. There are discussed possible applications of vircator in the Directed Energy Weapons Microwave (DEWM) area.
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Jiří BALLA, Richard MACH
The paper deal with basic kinematic and dynamic characteristics of Gatling weapons. This contribution is ongoing of topics published in . Input values from technical experiments are used for calculations. Design results are compared with measured on the 12.7mm machine gun 9-A-624.
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