Search results for "git"
showing 10 items of 7116 documents
Versatile optimization-based speed-up method for autofocusing in digital holographic microscopy
2021
We propose a speed-up method for the in-focus plane detection in digital holographic microscopy that can be applied to a broad class of autofocusing algorithms that involve repetitive propagation of an object wave to various axial locations to decide the in-focus position. The classical autofocusing algorithms apply a uniform search strategy, i.e., they probe multiple, uniformly distributed axial locations, which leads to heavy computational overhead. Our method substantially reduces the computational load, without sacrificing the accuracy, by skillfully selecting the next location to investigate, which results in a decreased total number of probed propagation distances. This is achieved by…
Magnetic resonance imaging of the siliceous skeleton of the demosponge Lubomirskia baicalensis
2005
The skeletal elements (spicules) of the demosponge Lubomirskia baicalensis were analyzed; they are composed of amorphous, non-crystalline silica, and contain in a central axial canal the axial filament which consists of the enzyme silicatein. The axial filament, that orients the spicule in its longitudinal axis exists also in the center of the spines which decorate the spicule. During growth of the sponge, new serially arranged modules which are formed from longitudinally arranged spicule bundles are added at the tip of the branches. X-ray analysis revealed that these serial modules are separated from each other by septate zones (annuli). We describe that the longitudinal bundles of spicule…
Prenatal exposure to perfluoroalkyl substances, immune-related outcomes, and lung function in children from a Spanish birth cohort study.
2019
Background: Prenatal exposure to perfluoroalkyl substances (PFASs) has been associated with impaired immune and respiratory health during childhood but the evidence is inconsistent and limited for lung function. We studied the association between prenatal PFASs exposure and immune and respiratory health, including lung function, up to age 7 years in the Spanish INMA birth cohort study. Methods: We assessed four PFASs in maternal plasma samples collected during the 1st trimester of pregnancy (years: 2003-2008): perfluorohexane sulfonate (PFHxS), perfluorooctane sulfonate (PFOS), perfluorooctanoate (PFOA), and perfluorononanoate (PFNA). Mothers reported the occurrence (yes/no) of lower respir…
Do coaching style and game circumstances predict athletes' perceived justice of their coach? A longitudinal study in elite handball and volleyball te…
2018
Objective: The present longitudinal study is the first to examine game to game fluctuations of perceived justice of elite volleyball and handball coaches. More specifically, we studied whether coaching style (i.e., need support versus control), coach behaviors (decision justifications), player’s status (i.e., starter or substitute), and game result (win/loss) predicted athletes’ perceived justice and its fluctuations. Methods: A longitudinal questionnaire study was performed during 6 consecutive weeks among Belgian female volleyball (N = 57) and male handball players (N = 39). We administered a general questionnaire (i.e., need support/control) the first week, and game-specific questionnair…
"Catan" spēles implementācija
2022
Kvalifikācijas darbs apraksta galda spēles “Catan” implementāciju. Spēles funkcionalitāte ietver lokālo spēli četriem spēlētājiem. kura laikā spēlētāji var tirgoties savā starpā vai ar banku, nodarboties ar ēku celtniecību un/vai uzlabošanu, kā arī spēlei ir sava karšu sistēma. Spēle ir gājienu balstīta – spēlētāji mainās ar gājieniem. Spēle veidota C# valodā ar Unity spēļu dzinēja palīdzību.
Consistent isotopic differences between Schistocephalus spp. parasites and their stickleback hosts
2015
Published version available at http://dx.doi.org/10.3354/dao02893 Parasite−host systems show markedly variable patterns in isotopic fractionation: parasites can be either depleted or enriched in 15N and 13C as compared to their hosts. However, it remains unknown whether isotopic fractionation patterns are similar in comparable parasite−host systems from markedly different ecosystems. Results of this study show that large-sized Schistocephalus spp. endoparasites are consistently depleted in 15N (by on average −2.13 to −2.20‰) as compared to their nine-spined stickleback Pungitius pungitius and three-spined stickleback Gasterosteus aculeatus hosts. The differences between parasites and host f…
Distance-based functions for image comparison
1999
The interest in digital image comparison is steadily growing in the computer vision community. The definition of a suitable comparison measure for non-binary images is relevant in many image processing applications. Visual tasks like segmentation and classification require the evaluation of equivalence classes. Measures of similarity are also used to evaluate lossy compression algorithms and to define pictorial indices in image content based retrieval methods. In this paper we develop a distance-based approach to image similarity evaluation and we present several image distances which are based on low level features. The sensitivity and eAectiveness are tested on real data. ” 1999 Published…
Starojuma dozas salīdzinājums mobilajā un digitālajā plaušu rentgenogrāfijā
2016
Izvēlētā bakalaura darba tēma ir „Starojuma dozas salīdzinājums mobilajā un digitālajā plaušu rentgenogrāfijā”. Darba galvenais mērķis ir noskaidrot un salīdzināt starojuma dozas mobilajā un diģitālajā plaušu rentgenogrāfijā. Darbs sastāv no teorētiskās un praktiskās daļa. Teorētiskajā daļā tiek apkopota literatūra par starojuma dozas raksturlielumiem, aprēķiniem un radiācijas drošību, digitālo un mobilo rentgenogrāfijas metodi, un plaušu rentgenogrāfiju. Praktiskajā daļā tiek veikts retrospektīvs, kvalitatīvs pētījums par ekspozīcijas parametru un saņemtās starojuma dozas salīdzināšanu digitālajā un mobilajā plaušu rentgenogrāfijā. Darba noslēguma daļā izdarīti analizētajā literatūrā un pē…
Digitālā mārketinga ietekme uz pārdošanas apjoma veicināšanu
2019
Digitālais mārketings mūsdienās atstāj arvien lielāku ietekmi uz ikviena patērētāja un uzņēmuma darbību, tādēļ tas ir kļuvis par būtisku zīmola atpazīstamības veicinātāju un ietekmē pārdošanas apjomus gan vietējā gan starptautiskā tirgū. Darba mērķis ir izpētīt digitālā mārketinga elementu pielietošanas veidus un to izmantošanas ietekmi uz pārdošanas apjoma pieaugumu Latvijā un Vācijā, izvirzīt priekšlikumus veiksmīgas digitālā mārketinga stratēģijas īstenošanai. Darbs sastāv no trīs daļām: teorētiskās, analītiskās un pētnieciskās. Darba pētnieciskās daļas ietvaros tiek secināts, ka digitālais mārketings spēj ietekmēt pārdošanas apjoma palielināšanos.
Bayesian subcohort selection for longitudinal covariate measurements in follow‐up studies
2022
We propose an approach for the planning of longitudinal covariate measurements in follow-up studies where covariates are time-varying. We assume that the entire cohort cannot be selected for longitudinal measurements due to financial limitations, and study how a subset of the cohort should be selected optimally, in order to obtain precise estimates of covariate effects in a survival model. In our approach, the study will be designed sequentially utilizing the data collected in previous measurements of the individuals as prior information. We propose using a Bayesian optimality criterion in the subcohort selections, which is compared with simple random sampling using simulated and real follo…