Bicycle multipurpose trailer

Tato práce se zabývá přehledem přívěsných vozíků za kolo, které jsou dostupné na trhu a konstrukčním řešením vlastního vozíku pro kombinovanou přepravu. Dále obsahuje platnou legislativu pro provoz na pozemních komunikacích, základní výpočty a výkresovou dokumentaci vlastního návrhu.This work deals with an overview of bicycle multipurpose trailers, which are available on the Czech market and structural design of my own truck for combined cargo transport. It also contains valid legislation for road use, basic calculations and drawings of my own design.

Particular Transmission for Propelling a Cable Pulley

Tato bakalářská práce se zabývá postupem návrhu vodorovného vozíkového dopravníku na kontejnery a konstrukcí převodového mechanismu pro tento dopravník. Nejdříve se zabývá rešerší nákladní tramvajové dopravy. Následně je koncepčně navrhnut vodorovný vozíkový dopravník na kontejnery, pro který je vypočítán převodový mechanismus. Tento mechanismus je vytvořen jako CAD model a z něho je odvozena výkresová dokumentace.This bachelor thesis is about the design process of horizontal car-type conveyor for containers and construction of transmission mechanism for this conveyor. First of all it deals with recherche of freight tram transport. Afterwards horizontal conveyor is conceptually designed. For this horizontal car-type conveyor for containers is transmission mechanism calculated. This mechanism is made as a CAD model from which documentation is derived

Toward a reliable detection of arachnophobia: subjective, behavioral, and neurophysiological measures of fear response

IntroductionThe administration of questionnaires presents an easy way of obtaining important knowledge about phobic patients. However, it is not well known how these subjective measurements correspond to the patient’s objective condition. Our study aimed to compare scores on questionnaires and image evaluation to the objective measurements of the behavioral approach test (BAT) and the neurophysiological effect of spiders extracted from fMRI measurements. The objective was to explore how reliably subjective statements about spiders and physiological and behavioral parameters discriminate between phobics and non-phobics, and what are the best predictors of overall brain activation.MethodsBased on a clinical interview, 165 subjects were assigned to either a “phobic” or low-fear “control” group. Finally, 30 arachnophobic and 32 healthy control subjects (with low fear of spiders) participated in this study. They completed several questionnaires (SPQ, SNAQ, DS-R) and underwent a behavioral approach test (BAT) with a live tarantula. Then, they were measured in fMRI while watching blocks of pictures including spiders and snakes. Finally, the respondents rated all the visual stimuli according to perceived fear. We proposed the Spider Fear Index (SFI) as a value characterizing the level of spider fear, computed based on the fMRI measurements. We then treated this variable as the “neurophysiological effect of spiders” and examined its contribution to the respondents’ fear ratings of the stimuli seen during the fMRI using the redundancy analysis (RDA).ResultsThe results for fear ranks revealed that the SFI, SNAQ, DS-R, and SPQ scores had a significant effect, while BAT and SPQ scores loaded in the same direction of the first multivariate axis. The SFI was strongly correlated with both SPQ and BAT scores in the pooled sample of arachnophobic and healthy control subjects.DiscussionBoth SPQ and BAT scores have a high informative value about the subject’s fear of spiders and together with subjective emotional evaluation of picture stimuli can be reliable predictors of spider phobia. These parameters provide easy and non-expensive but reliable measurement wherever more expensive devices such as magnetic resonance are not available. However, SFI still reflects individual variability within the phobic group, identifying individuals with higher brain activation, which may relate to more severe phobic reactions or other sources of fMRI signal variability

Measurement of charm production at central rapidity in proton-proton collisions at s=2.76\sqrt{s} = 2.76 TeV

The $p_{\rm T}$-differential production cross sections of the prompt (B feed-down subtracted) charmed mesons D$^0$, D$^+$, and D$^{*+}$ in the rapidity range $|y|<0.5$, and for transverse momentum $1< p_{\rm T} <12$ GeV/$c$, were measured in proton-proton collisions at $\sqrt{s} = 2.76$ TeV with the ALICE detector at the Large Hadron Collider. The analysis exploited the hadronic decays D$^0 \rightarrow$K$\pi$, D$^+ \rightarrow$K$\pi\pi$, D$^{*+} \rightarrow$D$^0\pi$, and their charge conjugates, and was performed on a $L_{\rm int} = 1.1$ nb$^{-1}$ event sample collected in 2011 with a minimum-bias trigger. The total charm production cross section at $\sqrt{s} = 2.76$ TeV and at 7 TeV was evaluated by extrapolating to the full phase space the $p_{\rm T}$-differential production cross sections at $\sqrt{s} = 2.76$ TeV and our previous measurements at $\sqrt{s} = 7$ TeV. The results were compared to existing measurements and to perturbative-QCD calculations. The fraction of cdbar D mesons produced in a vector state was also determined.Comment: 20 pages, 5 captioned figures, 4 tables, authors from page 15, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/307

Obchodování na komoditních trzích

Práce popisuje fungování obchodů na komoditních trzích, snaží se je jednoduchou a nenásilnou formou přiblížit širokému obecenstvu, představit základní principy, dle kterých obchodování funguje. Práce zároveň nastiňuje jakou cestou by se měl/mohl začínající obchodník vydat, co bude vyžadovat studium a příprava pro reálné obchodování. Cílem práce není poskytnout jakýkoliv návod jak obchodovat na komoditních trzích, ale zaujmout tímto tématem a otevřít nové pohledy a cesty těm, kdo hledají změnu