An Information Theoretic approach is used for studying the effect of noise on various spiking neural systems. Detailed statistical analyses of neural behaviour under the influence of stochasticity are carried out and their results related to other work and also biological neural networks. The neurocomputational capabilities of the neural systems under study are put on an absolute scale. This approach was also used in order to develop an optimisation framework. A proof-of-concept algorithm is designed, based on information theory and the coding fraction, which optimises noise through maximising information throughput. The algorithm is applied with success to a single neuron and then generalised to an entire neural population with various structural characteristics (feedforward, lateral, recurrent connections). It is shown that there are certain positive and persistent phenomena due to noise in spiking neural networks and that these phenomena can be observed even under simplified conditions and therefore exploited. The transition is made from detailed and computationally expensive tools to efficient approximations. These phenomena are shown to be persistent and exploitable under a variety of circumstances. The results of this work provide evidence that noise can be optimised online in both single neurons and neural populations of varying structures.

Thesis (Ph. D.)--University of Texas at Austin, 2008. / Vita. Includes bibliographical references.

Submitted by Erika Demachki (erikademachki@gmail.com) on 2014-11-13T16:45:09Z No. of bitstreams: 2 Dissertação - Daniel Antônio Mendonça da Silva - 2013.pdf: 1681960 bytes, checksum: 045f2940a2c8539d589a5c6227cf55e6 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Approved for entry into archive by Erika Demachki (erikademachki@gmail.com) on 2014-11-13T16:45:43Z (GMT) No. of bitstreams: 2 Dissertação - Daniel Antônio Mendonça da Silva - 2013.pdf: 1681960 bytes, checksum: 045f2940a2c8539d589a5c6227cf55e6 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Made available in DSpace on 2014-11-13T16:45:43Z (GMT). No. of bitstreams: 2 Dissertação - Daniel Antônio Mendonça da Silva - 2013.pdf: 1681960 bytes, checksum: 045f2940a2c8539d589a5c6227cf55e6 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2013-08-23 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / This work has the main objective to study a of the propagation of information sets N e Z:We consider three models of spreading information. The first model takes into account the power of each individual in transmitting information. The second model takes into account the power of every individual to receive information. In the third model this power is given by the amount of life and the probability that individuals have to jump right. / O trabalho tem como objetivo principal, o estudo da propagação de uma informação sobre os conjuntos N e Z: Consideramos três modelos de propagação da informação. O primeiro modelo leva em conta o poder de cada indivíduo em transmitir uma informação. O segundo modelo leva em conta o poder de cada indivíduo em receber informação. No terceiro modelo este poder é dado pela quantidade de vida e pelas probabilidades que os indivíduos têm de saltar para direita.

Den globala medellivslängden i världen ökar samtidigt som en åldrande befolkning leder till att behovet av vård och omsorg blir mer omfattande. Människor lever allt längre men är även sjuka en längre tid vilket ställer krav på kapaciteten inom vården. Kommunikationen utgör i dagsläget ett problem som försvårar sjukvårdens möjligheter att hantera den rådande vårdsituationen, vil-ket indikerar att sektorn är i behov av förändring. En möjlig lösning på detta problem är att utnyttja digitaliseringens möjligheter genom e-hälsa för att åstadkomma utveckling av välfär-den där vården håller en hög kvalitet och patienten står i fokus. Mobiltelefoner har visat sig vara ett lämpligt verktyg för detta ändamål då de idag utgör ett viktigt kommunikationsverktyg i samhället. Nuklearmedicinen syftar till den diagnostik och behandling som sker med hjälp av radioaktiva preparat och används exempelvis för behandling av sköldkörtelsjukdom. Behandlingen med dessa preparat medför restriktioner vilka skall beaktas av patienten och är information som skall förmedlas av sjukvården. En mobilapplikation har utvecklats på uppdrag av avdelningen för Nuklearmedicin vid Karolinska universitetssjukhuset med målet att på ett lättillgängligt sätt förmedla information till patienter och anhöriga. Med applikationen kan en kompletterande informationskanal skapas mellan patienten och av-delningens personal för att stödja kommunikationen. Vikten av korrekt och tydlig information i ett nära samarbete med kunnig vårdpersonal har diskuterats, vilket utgjort grunden för appli-kationens utformning. I syfte att utreda behovet och potentialen av ICT i sjukvården har en förstudie i form av en intervju genomförts. Tillsammans med en enkätundersökning, för att evaluera prototypen, utgör dessa grunden för den diskussion som förts kring applikationens möjligheter att bidra till kommunikationen inom denna del av sjukvården. Resultatet visar att potentialen för ICT inom vården är stor men att det finns brister som gör att systemen inte håller den kvalitet som förväntas och krävs av vårdsituationen. Genom införandet av prototypen kan patienter i tidigt skede ta del av information kring behandlingen och således förberedas efter egna villkor vilket är ett steg mot framtidens sjukvård. / The global life expectancy increases with an aging population, which leads to more demanding requirements on healthcare. Humans live longer but at the same time spend longer time of their lives being sick, which requires higher capacities within the healthcare system. Communication forms a problem by complicating the possibilities of healthcare to handle the situation, which indicates a need of change. A possible solution is to utilize the possibilities of digitalisation, with the help of e-health, to achieve development of the welfare where healthcare maintains high quality and patients are in focus. Mobile phones have shown to be a suitable tool for this cause due to the fact that they form a central tool for communication in today’s society. Nuclear medicine is the diagnostics and treatment with the help of radioactive substances and is part of today’s treatment of thyroid diseases. Using these preparations results in a number of restrictions, which has to be taken into consideration by the patient and should be given by the responsible physician. On behalf of the department for nuclear medicine at Karolinska univer-sity hospital a mobile application has been developed where patients and relatives, in a conven-ient way, can take part of information about their treatment. With the application, a complementary information channel can be created between patients and the department staff in order to support the communication. The importance of correct and transparent information in close cooperation with healthcare professionals has been discussed, which forms the base of the applications design. For the purpose of investigating the potential of ICT in healthcare, a pre-study in form of an interview was conducted. Together with a survey in order to evaluate the concept, these two form the basis of the discussion on the possibilities to contribute to the communication in the studied section of healthcare. The result shows that there is a lot of potential for ICT within healthcare, but the systems that are in use today lacks in quality, which is demanded and expected by the care situation. By introducing the concept, patients can take part of information about their treatment in an early stage, which allows them to prepare on their own terms, and is a step towards the healthcare of the future.

The Abstract The goal of this dissertation was to find out the quality of a communication training of the doctors in the undergraduate education. The sectional goals were focused on the analysis of a present state of communication training of the medical students, but also on determining the effect of communication training on development of communication skills of active listening and sharing the information. The last set goal was to create an ask-sheet of specific chosen skills as a beneficial element in a communication training of the doctors. For reaching the chosen goals, we have used several phases of a research. In the first phase, we gave to our respondents non-standardized ask-sheet, which was made to determine the level of their personal communication index. In the second phase of our research, we observed several chosen communication skills of the students. We took a video during every single simulated situations of the students' communication, which we used as a feed-back for the analysis of each performance. The first and second research phase took place between 2010 and 2015. The research team for the first phase was composed by the freshmen of Master study program of General Medicine in a present form at 2nd Medical Faculty of Charles University (2. LF UK) in years 2010 - 2015. I have...

This work deals with the issue of PLC with a focus on BPL technology (Broadbandover-power lines), which is explained in the theoretical part. The work describes in detailthe main components for PCB design with manufacturing and mounting process. Fur-thermore, the thesis provides instructions on how to establish communication betweenBPL modems and a description of individual functions. In conclusion, the procedureof measuring the noise intensity in the 230 V power line is described with the results.The output of the diploma thesis is the selection of components and the implementationof printed circuit boards for two BPL modems. These modems allow to measure SNR(signal to noise ratio) at physical speed.

This thesis deals with the transmission of information about hard drugs which were concealed by social system in the 70th and 80th of 20th century from perspectives of drug users. We focus on the problematics of informational sources and channels by means of the social system and the systems theory of Niklas Luhmann. We analyse, by using grounded theory, information environment which influenced the drug subculture. The data sources consist of 35 interviews with addicts who were actively taking hard drugs before 1989. The aim of this thesis is a comprehensive look at the functioning of the drug subculture, transmission of taboo information in society 70th and 80th of 20th century by the theory of social capital and social systems.

Transmitted data logging in routers is the main point of this semestral project. The suggestion of a system for data flows logging in routers and selection of suitable technology, that is used by implementation of the system within this thesis, is based on this analysis. In the thesis, a law responsibility of router administrator for transmitting data is analysed. In the next part, a general introduction to issue of data logging in computer networks including basic description of protocols and fundamentals of standard communication models is presented. Analysis of real enviroment is following. Suggestion and implementation of the system is described too. In the last part a reached results of this thesis are revealed.