Analysis of web server hosting

Tato diplomová práce se zabývá problematikou hostování webových stránek v České republice. Cílem práce je navrhnout postup a na jeho základě realizovat aplikaci pro automatizované určení, zda je konkrétní web provozován na serveru třetí strany nebo na vlastním serveru organizace či jednotlivce. Práce je rozdělena na tři hlavní části, kde první, teoretická část pojednává o principech, protokolech a službách, které jsou potřebné pro zajištění dostupnosti webových stránek s přihlédnutím na specifika prostředí českého internetu. V další, praktické části, je na základě získaných teoretických znalostí navrženo několik přístupů k analýze získaných dat. Na jejich základě je navržen a formou detekční aplikace implementován algoritmus, jehož cílem je určit, zda jsou předložené vstupní webové stránky umístěné na sdíleném serveru a pro každou z nich shromáždit informace o jejím hostování. V poslední části práce je aplikace spuštěna na vytvořené databázi webových stránek dle kategorií subjektů provozující tyto weby. V této, analytické části, jsou výstupní získané informace o hostování těchto webů zpracovány a prezentovány spolu s uvedením příslušných souvislostí týkajících se hostování webů v České Republice.Master thesis deals with the problematics of webpages hosting in the Czech Republic. The goal of the thesis is to design a procedure and to implement an application for automated determination of whether a particular website is operated on a third party server or an own server of the organization or the individual. The thesis is divided into two main parts. The first part of the thesis lays a theoretical base concerning principals, protocols and services which are necessary for providing availability of the webpages with special attention to the specifics of the Czech internet environment. In the practical part there are several approaches to the analysis of the obtained data proposed. On that basis there is designed and in the form of the detection application implemented an algorithm which goal is to determine whether the submitted webpages are placed on a shared server and to collect the information about their hosting. In the last part of the thesis the application runs based on the created database of webservers organized by the categories of the webserver operators. In this analytic part the obtained output information about these webservers hosting are processed and presented together with the relevant context concerning the hosting of these webpages in the Czech Republic.

Maximum principal stress distribution observed in ZMB-31435 LM₂ (left), ZMB-31626 LM₂ (middle) and ZMB-83551 LM₂ (right) during maximum intercuspation contact.

<p>Blue areas mark the position were occlusal forces were applied. First row = occlusal view; second row = buccal view; third row = lingual view. B = buccal; D = distal; L = lingual; M = mesial.</p

The enamel volumetric meshes of specimen ZMB-31435 and ZMB-31435sim.

<p>A, the volumetric mesh of specimen ZMB-31435 LM₂ with highlighted the crests considered in the simulation. B, the volumetric mesh with artificial mesiodistal grooves interrupting the trigonid and entoconid-hypoconulid crests (specimen ZMB-31435sim).</p

Loading position and direction for specimen ZMB-31435, ZMB-31626 and ZMB-83551.

<p>For each lower left second molar (LM₂) only the volumetric mesh of the enamel is displayed. The load (red arrows) was distributed proportionally according to the occlusal contact areas detected in the Occlusal Fingerprint Analyser (OFA) software (see also <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0069990#pone.0069990.s002" target="_blank">Video S1</a>-<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0069990#pone.0069990.s004" target="_blank">S3</a>). B = buccak; D = distal; L = lingual; M = mesial.</p

Maximum principal stress distribution in ZMB-31435 LM₂ and ZMB-31435sim LM₂ during a representative time-step of phase I.

<p>Blue areas on the occlusal surface mark the position were occlusal forces were applied, and red areas show maximum tensile stress. The plot on the right side shows the differences in tensile stress values between the two specimens based on 14 homologous nodes selected on the occlusal grooves.</p

Basic steps to create the volumetric mesh and to recognize the contact areas for specimen ZMB-31435.

<p>A, dental tissues and supporting structures for the lower left second molar (LM₂) of specimen ZMB-31435. B, collision detection for specimen ZMB-31435 in the Occlusal Fingerprint Analyser (OFA) software during maximum intercuspation contact situation; the LM¹-LM² are transparent to show the collision (red spots) in the occlusal surface of the LM₂ (see also Video S1). C, the FE mesh of specimen ZMB-31435 consisting of 2,482,913 ten-nodded tetrahedral elements. PDL = periodontal ligament; B = buccal; D = distal; L = lingual; M = mesial.</p

Pairwise comparisons among the modern human groups from different technological categories.

<p>Pairwise comparisons among the modern human groups from different technological categories.</p

Sections of the enamel volumetric meshes along the buccolingual groove (A-A) and mesiodistal groove (B–B).

<p>A, specimen ZMB-31435 LM₂. B, specimen ZMB-31626 LM₂. C, specimen ZMB-83551 LM₂.</p

Neandertal versus Modern Human Dietary Responses to Climatic Fluctuations

<div><p>The Neandertal lineage developed successfully throughout western Eurasia and effectively survived the harsh and severely changing environments of the alternating glacial/interglacial cycles from the middle of the Pleistocene until Marine Isotope Stage 3. Yet, towards the end of this stage, at the time of deteriorating climatic conditions that eventually led to the Last Glacial Maximum, and soon after modern humans entered western Eurasia, the Neandertals disappeared. Western Eurasia was by then exclusively occupied by modern humans. We use occlusal molar microwear texture analysis to examine aspects of diet in western Eurasian Paleolithic hominins in relation to fluctuations in food supplies that resulted from the oscillating climatic conditions of the Pleistocene. There is demonstrable evidence for differences in behavior that distinguish Upper Paleolithic humans from members of the Neandertal lineage. Specifically, whereas the Neandertals altered their diets in response to changing paleoecological conditions, the diets of Upper Paleolithic humans seem to have been less affected by slight changes in vegetation/climatic conditions but were linked to changes in their technological complexes. The results of this study also indicate differences in resource exploitation strategies between these two hominin groups. We argue that these differences in subsistence strategies, if they had already been established at the time of the first contact between these two hominin taxa, may have given modern humans an advantage over the Neandertals, and may have contributed to the persistence of our species despite habitat-related changes in food availabilities associated with climate fluctuations.</p></div

Comparisons between Neandertals and early modern humans.

<p>Comparisons between Neandertals and early modern humans.</p