374 research outputs found
Inverse Problem Solution in Landmines Detection Based on Active Thermography
Landmines still affect numerous territories in the whole world and pose a serious threat, mostly to civilians. Widely used non-metallic landmines are undetectable using metal detector. Therefore, there is an urging need to improve methods of detecting such objects. In the present study we introduce relatively new method of landmines' detection: active infrared thermography with microwave excitation. In this paper we present the optimization based method of solving inverse problem for microwave heating. This technique will be used in the reconstruction of detected landmines geometric and material properties
ISLAND NAKON KRIZE ā PRILIKE I PRIJETNJE RAZVOJU
The article presents the current situation in Iceland. It outlines its ecnomic background and the causes of the past crisis. It also presents how it was overcome as well as what measures have been taken to avoid further breakdowns, as well as what conclusions resulted from it. Moreover, it indicates Islandās main advantages and draws attention to the weaknesses and potential sources of the next crises, as well as the importance of having its own currency for the restructuring process.Älanak predstavlja trenutno stanje na Islandu. Daje naznake gospodarske pozadine i uzroka krize. TakoÄer opisuje kako je ona prevladana te koje su mjere poduzete kako bi se izbjegli daljnji potresi, kao i koje se pouke mogu izvuÄi iz nje. Nadalje, ukazuje na glavne prednosti Islanda i skreÄe pozornost na slabosti i moguÄe izvore sljedeÄe krize, kao i na važnost postojanja vlastite valute za proces restrukturiranja
Green Measures... or, none of us are green until all of us are green
This paper introduces a re-consideration of the tenets of the ātriple bottom line' (economy, environment, and society) to contemplate the societal implications of the current successes enjoyed by the environmentally-sensitive design movement. Considering the tools that we use to gauge the successes of sustainable ambitions, this work proposes the ways in which we apply sustainable design metrics are fundamentally working against the tenets of the triple bottom line. When considered through the lens of society, and in particular the urban poor, the current trajectory of the sustainable design movement is one that may create voids where a sustainable urban future can not exist
Business Cycles and Their International Transmission ā the Introduction to the Problem
The article presents the problem of business cycle transmission and the role of canals of transmission in the contemporary world. Because of the theoretical character of the problem the used methodology is a presentation of the results of the researches and theoretical works about the problem of crisis sources and their transmission
Tractability and the computational mind
We overview logical and computational explanations of the notion of tractability as applied in cognitive science. We start by introducing the basics of mathematical theories of complexity: computability theory, computational complexity theory, and descriptive complexity theory. Computational philosophy of mind often identifies mental algorithms with computable functions. However, with the development of programming practice it has become apparent that for some computable problems finding effective algorithms is hardly possible. Some problems need too much computational resource, e.g., time or memory, to be practically computable.
Computational complexity theory is concerned with the amount of resources required for the execution of algorithms and, hence, the inherent difficulty of computational problems. An important goal of computational complexity theory is to categorize computational problems via complexity classes, and in particular, to identify efficiently solvable problems and draw a line between tractability and intractability.
We survey how complexity can be used to study computational plausibility of cognitive theories. We especially emphasize methodological and mathematical assumptions behind applying complexity theory in cognitive science. We pay special attention to the examples of applying logical and computational complexity toolbox in different domains of cognitive science. We focus mostly on theoretical and experimental research in psycholinguistics and social cognition
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