Search results for "Digital"
showing 10 items of 3267 documents
Novadpētniecības krājuma digitalizācija Latvijas bibliotēkās
2020
Novadpētniecība dod iespēju uzzināt vairāk par sev tuvajiem un vietu, no kurienes esam nākuši. Arvien biežāk sabiedrībā tiek norādīts uz digitālās vides vērtību un nozīmīgumu, līdz ar to bibliotēkām būtu jāpielāgojas, lai lietotājiem varētu piedāvāt vajadzīgo. Ir jāuzlabo bibliotēku novadpētniecības krājuma pieejamība attālināti. Pētījumā veiktās intervijas un kontentanalīze palīdz uzzinātu par veikto novadpētniecības krājuma digitalizācijas darbu bibliotēkās un kā varētu uzlabot digitalizācijas darbu. Pētījuma mērķis ir apskatīt un novērtēt digitalizācijas darbu bibliotēkās un izveidot bibliotēku novadpētniecības krājuma digitalizācijas modeli.
Architecture of a digital PFM controller for IC implementation
2006
This paper presents a digital controller architecture oriented to IC implementation. The classical digital pulse width modulator (D-PWM), using digital analog converter (DAC), is replaced with a Sigma-Delta (/spl Sigma//spl Delta/) modulator based on pulse frequency modulator (PFM) technique. Results of an investigation from a prototype for DC-DC converter, in terms of simulated and experimental performances, are reported, together with harmonic frequency investigation. The control function design is implemented on a field programmable gate array (FPGA). As a consequence of good agreement between simulated and experimental results, the proposed architecture realizes a digital control loop w…
Quantitative colorimetric analysis of some inorganic salts using digital photography
2011
An analytical imaging approach to the quantitation of dissolved chemical species absorbed in the visible spectral region is reported. The approach uses digital images of a series of standard solutions of the target substance and their processing with appropriate software to assign a numeric value to each standard in terms of color intensity. Such a value is directly proportional to the analyte concentration and allows the construction of a calibration graph. The results thus obtained are compared with those provided by the classical spectrophotometricmethod used to run calibration curves for colored substances. The chemical imaging technique is relative simple and affordable; in fact, it ca…
Piracy versus Netflix : Subscription Video on Demand Dissatisfaction as an Antecedent of Piracy
2018
Drawing from cognitive dissonance and neutralization theories, this study seeks to improve the understanding on consumer decision-making between the current legal and illegal video consumption alternatives. We develop and test a research model featuring Subscription Video on Demand (SVOD) satisfaction and various dimensions of SVOD quality as antecedents of video piracy neutralizations and attitudes. Based on results from an online survey among Finnish SVOD users, SVOD satisfaction is primarily determined by content quality, and has a small negative effect on attitude toward piracy through decreased piracy neutralization. However, it appears that current legal services are not seen as true …
Antoine Picon: Digital Culture in Architecture
2012
Today’s explosive developments in digital technology have also affected architecture and the urban landscape. The new possibilities opened up by digital simulation have led to an increasingly strategic approach to planning, an approach based on generating scenarios, which thus represents a radical departure from traditional planning. This volume provides a profound introduction to the important role of digital technologies in design and execution. In four chapters, the author systematically examines the influence of digital culture on architecture but also on the urban landscape as well as product design. The relationship of digital architecture to the city is also an important focus.
The dual nature of mobile games: between escapism and finding a community
2021
Maģistra darbā tiek apskatīta mobilo spēļu duālā daba starp eskeipismu un komūnu (alianse S), kas tiek bāzēta BTK. Šī pētījuma ietvaros tiek skatīts kā komūna un eskeipisms sadzīvo, pastiprina un vai atrodas pretrunā viens ar otru. Galvenās izmantotās datu ievākšanas metodes ir daļēji atvērtā aptauja, daļēji strukturētas intervijas, dalība un novērojums, kā arī pētījums daļēji balstīts uz auto-etnogrāfiju. Pētījuma laikā tiek skatīts komūnas un eskeipisma koncepts un ietekme uz spēlētājiem, tostarp tiek skatīta arī pavadītā laika ietekme uz pieredzi, Covid-19 pandēmijas ietekmi un pētījumu veikšanu digitālajā vidē. Maģistra darbā tiek pamatots pieņēmums, ka mobilās spēles pašā būtībā nav ne…
Kontrastverstärkte MR-Angiographie abdomineller Gefäßean einem 1.0 T-System*
2000
Purpose To evaluate the efficacy of breath-hold, three-dimensional, contrast-enhanced magnetic resonance angiography with a 1.0 T system for imaging the abdominal vessels in comparison to conventional arteriography (CA). Methods The abdominal aorta and visceral arteries were studied in 54 patients (60 examinations) on a 1.0 T scanner using an ultrafast gadolinium-enhanced gradient-echo sequence with the following parameters: TR/TE = 3.8/1.4 ms, flip angel 25 degrees, matrix 198 x 256, field 380-420 mm, pixel size 1.9 x 1.48 mm2, slice thickness 1.5-2.5 mm, acquisition time 22-26 sec. Individual circulation times were determined by a test bolus before each MR angiography. Conventional arteri…
Statistical shape analysis of ascending thoracic aortic aneurysm: Correlation between shape and biomechanical descriptors
2020
An ascending thoracic aortic aneurysm (ATAA) is a heterogeneous disease showing different patterns of aortic dilatation and valve morphologies, each with distinct clinical course. This study aimed to explore the aortic morphology and the associations between shape and function in a population of ATAA, while further assessing novel risk models of aortic surgery not based on aortic size. Shape variability of n = 106 patients with ATAA and different valve morphologies (i.e., bicuspid versus tricuspid aortic valve) was estimated by statistical shape analysis (SSA) to compute a mean aortic shape and its deformation. Once the computational atlas was built, principal component analysis (PCA) allow…
Lensless object scanning holography for two-dimensional mirror-like and diffuse reflective objects
2013
Recently proposed lensless object scanning holography (LOSH) [Opt. Express 20, 9382 (2012)] is a fully lensless method capable of improving the image quality in digital Fourier holography applied to one-dimensional (1D) reflective objects and it involves a very simplified experimental setup. LOSH is based on the recording and digital postprocessing of a set of digital lensless Fourier transform holograms, which finally results in a synthetic image with improved resolution, field-of-view (FOV), signal-to-noise ratio (SNR), and depth of field. In this paper, LOSH is extended to the cases of two-dimensional (2D) mirror-like and 1D diffuse-based objects. For 2D mirror-like objects, the experime…
Anàlisi crítica d’aplicacions de lectura per a infants: paràmetres i indicadors
2018
Les aplicacions de lectura digital infantil han evolucionat considerablement al llarg dels últims anys. Tanmateix, segueixen sent les grans oblidades en informes i estadístiques sobre la producció editorial i més encara dins del sector digital, cosa que origina un fenomen d’infoxicació en què el mediador es troba amb pocs criteris que faciliten la selecció d’aquest nou tipus de continguts. Aquesta investigació presenta els resultats de l’anàlisi de tretze aplicacions de lectura en les seues dimensions de forma i contingut. Alhora, s’hi observen trets com ara el mode d’adquisició, la privacitat, l’organització de continguts o la personalització. Finalment, reflexionarem sobre l’adequació del…