Realistic, Extensible DNS and mDNS Models for INET/OMNeT++

The domain name system (DNS) is one of the core services in today's network structures. In local and ad-hoc networks DNS is often enhanced or replaced by mDNS. As of yet, no simulation models for DNS and mDNS have been developed for INET/OMNeT++. We introduce DNS and mDNS simulation models for OMNeT++, which allow researchers to easily prototype and evaluate extensions for these protocols. In addition, we present models for our own experimental extensions, namely Stateless DNS and Privacy-Enhanced mDNS, that are based on the aforementioned models. Using our models we were able to further improve the efficiency of our protocol extensions.Comment: Published in: A. F\"orster, C. Minkenberg, G. R. Herrera, M. Kirsche (Eds.), Proc. of the 2nd OMNeT++ Community Summit, IBM Research - Zurich, Switzerland, September 3-4, 201

WCA Framework

This article describes subject-matter and components of WCA Framework. Authors describe individual elements of WCA. Article is being coupled with explaining of WCA Framework. Authors furthermore introduce differences between WCA Framework and additional analytical methods. Authors pay attention to relation between information technology, information system, work system, firm and business environment.WCA Framework, customer, product, business process, information, participant, information technology, Research and Development/Tech Change/Emerging Technologies,

"Haridusleksikon"

Haridusleksikon koondab tähestikulises järjekorras esitatuna 43 artiklit hariduse ja kasvatuse peamistest märksõnadest. Artiklite autorid on 29 hariduse ja kasvatuse valdkonna spetsialisti Tallinna Ülikoolist, Tartu Ülikoolist, Tallinna Tehnikaülikoolist ja ka muudest institutsioonidest. Leksikonis on esitatud märksõnade inglis-, saksa-, prantsus-, soome- ja venekeelsed vasted, levinumad definitsioonid, valdkonna arenguloo põhijooned, aktuaalsed probleemid, olulisimad rahvusvahelised organisatsioonid ja erialased ajakirjad ning võimaluse korral lühiülevaade valdkonna uurimistraditsioonist Eestis. Leksikon on mõeldud kogu Eesti haridusüldsusele, eriti aga selle valdkonna üliõpilastele, õpetajatele, õppejõududele ja haridusametnikele. Sellises formaadis leksikon on Eestis hariduse ja kasvatuse valdkonnas esmakordne, see on avatud edasiarendamiseks ning loodetavasti antakse edaspidi välja ka selle täiendatud trükke

Accelerated Steady-State Torque Computation for Induction Machines using Parallel-In-Time Algorithms

This paper focuses on efficient steady-state computations of induction machines. In particular, the periodic Parareal algorithm with initial-value coarse problem (PP-IC) is considered for acceleration of classical time-stepping simulations via non-intrusive parallelization in time domain, i.e., existing implementations can be reused. Superiority of this parallel-in-time method is in its direct applicability to time-periodic problems, compared to, e.g, the standard Parareal method, which only solves an initial-value problem, starting from a prescribed initial value. PP-IC is exploited here to obtain the steady state of several operating points of an induction motor, developed by Robert Bosch GmbH. Numerical experiments show that acceleration up to several dozens of times can be obtained, depending on availability of parallel processing units. Comparison of PP-IC with existing time-periodic explicit error correction method highlights better robustness and efficiency of the considered time-parallel approach

Analysis of the visual spatiotemporal properties of American Sign Language.

Careful measurements of the temporal dynamics of speech have provided important insights into phonetic properties of spoken languages, which are important for understanding auditory perception. By contrast, analytic quantification of the visual properties of signed languages is still largely uncharted. Exposure to sign language is a unique experience that could shape and modify low-level visual processing for those who use it regularly (i.e., what we refer to as the Enhanced Exposure Hypothesis). The purpose of the current study was to characterize the visual spatiotemporal properties of American Sign Language (ASL) so that future studies can test the enhanced exposure hypothesis in signers, with the prediction that altered vision should be observed within, more so than outside, the range of properties found in ASL. Using an ultrasonic motion tracking system, we recorded the hand position in 3-dimensional space over time during sign language production of signs, sentences, and narratives. From these data, we calculated several metrics: hand position and eccentricity in space and hand motion speed. For individual signs, we also measured total distance travelled by the dominant hand and total duration of each sign. These metrics were found to fall within a selective range, suggesting that exposure to signs is a specific and unique visual experience, which might alter visual perceptual abilities in signers for visual information within the experienced range, even for non-language stimuli