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Impact of Narcoterrorism on the Security Environment in the Americas
Kristlík, Tomáš ; Křížová, Markéta (advisor) ; Janský, Bohumír (referee) ; Munoz, Arturo G. (referee)
This dissertation aims to provide a strategic qualitative economic analysis of the illicit drug trafficking industry as it evolved in its modern form across the Americas in the latter part of the 20th century, with principal focus on Colombia and Mexico, and to assess its impact on the security environment in the Americas with the ultimate ambition to provide tangible recommendations for complex disruptive countermeasures. The key premise upon which all the conclusions are later formulated is that trafficking in illicit substances is primarily an entrepreneurial activity aimed to generate profit and economic approach to the issue therefore yields the most promising prospects for tangible results. Narcoterrorism in its own merit, and drug-related violence in general, is contemplated, analyzed and explained as one of the key tactics inherent to the trafficking business model. Finally, a critical assessment of existing counter-narcotics strategies is performed in order to outline deficiencies of these policies with the aim to provide alternative and more effective countermeasures against illicit trafficking.
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Runoff development in selected catchments in the Kyrgyz Range, Tian-Shan
Jedličková, Šárka ; Šobr, Miroslav (advisor) ; Janský, Bohumír (referee)
The main objective of this paper was to investigate runoff changes in the catchment Ala-Arca, Alamaedin and Kara-Balta in Kyrgyzstan, as well as change in climate conditions from available stations in the area. The runoff, precipitation, and temperature series were subjected to monthly, seasonal and annual analyses based on available data. Both absolute and relative data homogeneity were verified using statistical tests such as the Mann-Whitney-Pettit test, the SNHT test, and the WiIlcoxon's two- sample test for absolute homogeneity, and the Alexandersson's test for relative homogeneity. The Mann-Kendall test was used to determine the trend in each serie. There were inhomogeneities found in a number of runoff data. In most cases, the changes of rivers Ala-Arca and Kara-Balta were recorded in 1987. Compare to Ala-Arca and Kara-Balta, the changes of river Alamedin were recorded 3 years later, in 1990. There was a positive trend development by the rivers with the glacial-snow regime. However, there was no statistically significant trend for the entire time series. Key words: runoff change, precipitation, temperature, glacial-snow regime, snow-glacial regime, homogenization, Mann-Whitney-Pettit test, trend, Mann-Kendall test, glaciation, Kyrgyzstan, Tien- Shan
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Dynamics of glacial lakes and hydrological conditions of a glacial-morainic complex (Adygine, northern Tien Shan)
Falátková, Kristýna ; Janský, Bohumír (advisor) ; Petrakov, Dmitry (referee) ; Pánek, Tomáš (referee)
The thesis deals with hydrological conditions in a proglacial environment, focusing on the development of glacial lakes and the assessment of their susceptibility to outburst. The study site is the Adygine glacier-moraine complex located in the north-facing valley of the Kyrgyz Ridge, northern Tien Shan, Kyrgyzstan, at an altitude of 3400-4200 m a.s.l. In the past 50 years, the receding glacier allowed formation of several lakes, which form a three-level cascade and are fed by glacier meltwater. Below the glacier, there is a complex of several generations of moraines, through which the glacier meltwater is routed downstream. The aims of the work were to evaluate the development of individual lakes, their susceptibility to sudden outburst and possible triggers, to estimate the probable development of the site in the future, to analyse the hydrological regime of the lakes and to obtain basic information on the subsurface flow of water from the site to the stream. For the purposes of assessing the development of the lakes, the data obtained in the field (geodetic surveying of a shore line, bathymetric measurements), as well as satellite and aerial images were used. Fluctuation of lake water level was monitored by pressure sensors and the processing of this data allowed to analyse the hydrological...
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Interaction of groundwater and surface water under period of hydrological drought in the floodplain of the upper Lužnice River
Korejs, Tomáš ; Šobr, Miroslav (advisor) ; Janský, Bohumír (referee)
The object of this thesis si to evaluate the interaction of groundwater and surface water under the period of hydrological drought in the floodplain of the upper Lužnice river. The thesis tries to show the influence of the groudwater in the river floodplain during the period of hydrological drought and its correlation with the surface water state. The area of interst of the upper Lužnice is characterized by a unique ecosystem of unique natural value. It is a preserved river floodplain, which plays an irreplaceable role in fluvial processes, especially in water retention. The objectives were solved based on the monitoring of groudwater and surface water states from data obtained from the PřF UK profiles, which are represented by boreholes aross the floodplain and level meters in the watercourse. From the data obtained, it was possible to create a final analysis and to determine the behaviour and the mutual interaction between the surface water and groundwater in this natural floodplain. A detailed analysis has confirmed, that the interaction between watercourse and the floodplain and its retention potential. It can be said that during the hydrological drought, the water state or discharge in the watercourse is improved by water from the floodplain. The subsidy is only evident in certain stretches of...
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Influence of physiogeographic conditions on runoff extremity (Case study: Comparison of small catchments in the central area of Šumava Mountains)
Hojovec, Daniel ; Janský, Bohumír (advisor) ; Matoušková, Milada (referee)
In connection with the increasing occurrence of extreme hydrological situations, new opportunities for flood protection are emerging. Among these options also includes the gradually increase water retention capacity and to reduce runoff variability in headstream areas. This bachelor thesis deals with the comparison of three physical geographical different river basins in the headstream area of Šumava mountains. The main aim of this study is a research influence of physiogeographic conditions on runoff extremity in the catchment of individual selected streams on the basis of a comparative analysis. Extremity runoff is represented by selected flood situations that were processed on the basis of data from the experimental monitoring of Department of Physical Geography and Geoecology, Faculty of Science, Charles University in Prague. The opening part of this thesis consists of literary research, physical geographical and hydrographical characteristics of all catchment areas. The main part of the thesis is focused on description and comparison of extreme situations in the monitored catchments. The conclusion of the thesis is an evaluation, which consists in the assessment of the influence of physiogeographic conditions on runoff extremity. In the final evaluation it was found that the reaction of Černý...
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Lakes of the Czech Republic physico-geographical a physico limnological characteristics
Šobr, Miroslav ; Janský, Bohumír (advisor) ; Kříž, Vladislav (referee) ; Vrba, Jaroslav (referee)
J e ze r a C e s kér ep ub l i lE fyz i c ko ge o g r af c kéa fyz i ká lně J i ntno l o gi cké p o mě ry Lakes of the Czeclt Republic physico-geographical and physicoJimnological clnracteristics (Etiglish veÍsion) IntroducÍiotl In comparison with other European regions, there are orrly a few oflakes oťnatural origin in the Czech Republic. In our country, there are neither high mountains with network of glacial lakes nor vast lowlands of northem type with tlre lďie plateau' There are neither vast, fully developed karsts regions, nor active volcanic areas nor sea shores. The fluvial lakes originated in tlre floodplains oťseveral waterways are one tlre most numerolls types of lakes ir-r the courrtry. In the river floodplains there had been massive rnining of gravel-sand alluvium sedirnents which is connected to tlre origination oť the lakes o| arrthropogenic origin. These ale also rather frequent irr the areas of coal mining, especially of lignite coal and other mineral resources. And the last numerous type of lakes includes the water bodies in the peat bog and moor land areas which are scattered alorrg the wlrole mountain border range in the Czeclr Republic (JANSKÝ, ŠosnBr AL. 2003). In comparison to the world's lakes, the lakes in the Czecir Republic are of far smaller size and volume dimensions. They are...
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