This master's thesis is focused on the design of a highspeed aquizition system which is based on FPGA and a highspeed AD converter with modern JESD204B interface. Considering the requirements, such as high samplig rate, the current range of available devices is limited. Therefore the market overview of the modern IC and modules was made. The resulting design is based on available modules, so the rached sampling rate is up to 5 GSa/s with 12bits resolution. Data from measurement are send to PC via Ethernet which uses lwIp stack and TEMAC core on Microblaze proccessor.

The work deals with design of novel pipelined AD converter using switched-capacitors approach.

The work deals with the design of novel high order sigma-delta AD converter using switched-capacitors approach. Model of the ideal and real architecture of the third order sigma-delta modulator was designed in MATLAB SIMULINK. The comparison of the ideal and real model of sigma delta architecture is described in this thesis. On the basis of simulation results in MATLAB SIMULINK the stages of modulator on transistors level in CMOS technology were designed. Fully differential operational amplifier, switched capacitor integrator, summing amplifier, comparator, one bit digital to analog converter and nonoverlapping clock generator were designed. The circuit of third order sigma-delta modulator was simulated in CADENCE. Layout of operational amplifier and switched capacitor integrator was made. Through the use of MATLAB was designed decimation filter as well.

Today, it has become increasingly challenging for firms to communicate with their target audiences, due to the amount of media noise present in the contemporary market. In this study, the author examines how consumers perceive different product settings that are presented within advertisements, and how this affects their attitude toward the ad, with hopes that it will lead to new insights on how the visual element of product setting can be enhanced to create messages that better connect and resonate with consumers in today’s overcrowded market. Using previous literature on Sensory Marketing, Advertising Perception, and Advertising Attitude as basis, a matrix that shows different combinations of product setting was generated, which allowed the author to examine how consumers perceive different typesof product settings. The findings suggest that consumers perceive product settings that aid mental imagery and ads with balanced complexity very positively in their evaluation of advertisements. Ad information, pleasure, and its ability to produce a mental imagery were all found to be keys in garnering positive attitude, and combining these three elements together in one ad has been shown to be the most effective in gathering the highest positive attitude towards the ad. The essay ends by discussing the theoretical and practical implications of these findings, and recommendations for future research.

The Acceptable Ads Standard is a set of guidelines developed by the biggest ad-blocker company AdBlock Plus as an attempt to alleviate the largest need for ad-blocking programs; ads being annoying, irrelevant, and too intrusive. The guidelines inflict rules regarding how ads can be presented in order to be acceptable, thereby not disturbing the consumer. If a website follows these guidelines, their ads will not get blocked. The terms ad-avoidance and ad-irritation has been established by Cho et al. and Baek et al. [4]. The term ad-noticeability was added to these in order to express the behavior of seeing an ad, but not necessarily understanding what it’s trying to mediate. This study aims to examine the Acceptable Ads guidelines’ effect on user experience and ad-noticeability through a quantitative and qualitative study. The two studies were conducted with the help of two specially made test suites in the form of two websites, one with acceptable and one with non-acceptable ads. All participants went through the same set of tasks on the websites. In the quantitative study, data regarding what ads the participants’ had seen and what their experiences’ had been like was collected. Through the qualitative study, it was possible to get more elaborate answers to why certain ads were seen or missed and to get more in-depth answers regarding the participants’ experiences. Through the study, it was found that there is a difference in ad-noticeability and the user experience of ads between websites that contain either acceptable or non-acceptable ads. The results suggest that the Acceptable Ads guidelines affect user experience positively, i.e. leading to less ad-irritation or annoyance, but also affect ad-noticeability negatively. It was also found that cognitive ad-avoidance was greatly affected by task-oriented focus, both in cases with and without ads following acceptable / The Acceptable Ads Standard är en samling med riktlinjer utvecklade av det största företaget inom ad-blockers, AdBlock Plus. Dessa riktlinjer utvecklades som ett försök att motverka de största anledningarna till att konsumenter installerar ad-blockers: att reklam är irriterande, irrelevant, eller för påträngande. Dessa riktlinjer skapar regler för hur onlinereklam ska presenteras för att vara acceptabelt, och därmed inte störa konsumenterna. Om en hemsida följer dessa regler är tanken att deras reklam inte ska bli blockerad av installerade ad-blockers. Termerna ad-avoidance (“reklamundvikelse”) och ad-irritation (“reklamirritation”) har blivit etablerade av Cho et al. och Baek et al [4]. Termen ad-noticeability (att notera reklam) har blivit tillagt till dessa för att uttrycka beteendet att se reklam, utan att nödvändigtvis förstå den. Denna studie riktar sig till att undersöka Acceptable Ads påverkan på användarupplevelse och hur mycket reklam som noteras genom en kvantitativ och en kvalitativ studie. Dessa två studier genomfördes med hjälp av två specialtillverkade testsviter i formen av två hemsidor: en hemsida med acceptabel reklam och en med oacceptabel reklam. Alla testdeltagare gick igenom samma uppgifter på dessa hemsidor. I den kvalitativa studien fanns ett fokus på att samla in data gällande vad testdeltagare sett och upplevt. Genom den kvalitativa studien var det möjligt att få mer djupgående svar på varför viss reklam hade missats och hur deltagarna hade upplevt reklamen. Genom studien hittade man att det var skillnad på hur mycket reklam som noteras och på hur testdeltagare upplever reklam på hemsidor med acceptabel kontra oacceptabel reklam. Resultaten föreslår att riktlinjerna från Acceptable Ads påverkar användarupplevelsen positivt genom att minska irritation men också att de har en negativ påverkan på hur mycket reklam som noteras. Det visade sig också att kognitiv reklamundvikelse var mycket påverkat av ett uppgiftsorienterat fokus, både i fall med och utan acceptabel reklam.

<p>Peer-to-Peer networking technology is evolving rapidly. P2P networks overcome the limitations of client/server networks where each computer shares resources of other computer. There are different types of P2P networks depending upon their functionalities. Peer to peer networks provide long list of features like: selection of nearby peers, redundant storage, effi-cient search/location of data items, data performance or guarantees etc. It is important to see that how P2P can work with wireless ad hoc networks and why it is important. What are im-portant issues which come across by using P2P and wireless ad hoc networks together. How TCP/IP stack can be affected. How the whole system looks like in which P2P techniques are used with wireless ad hoc routing protocols to perform different tasks and services.</p>

<p>Syftet med denna studie är att undersöka hur idrottslärare metodiskt arbetar för elever med AD/HD i idrottsundervisningen. Begreppen inkludering och exkludering beskrivs i arbetet. Bakgrunden till syftet är att det är omkring fyra till åtta procent av eleverna som har AD/HD. Metoden baserar sig på kvalitativa intervjuer med idrottslärare. Resultaten visar att idrottslärarna har olika uppfattning i hur undervisningssituationen är med elever med AD/HD. Några ansåg att deras undervisning blir mer strukturerad på grund av att de måste vara tydligare med instruktioner, medan andra ansåg att undervisningen fungerar utan särskilda anpassningar. Lärarna talar om att det är viktigt i undervisningen att man har rutiner samt att eleven på förhand vet vad som kommer att ske på idrottslektionen. Dessutom att man har kunskap om elever med AD/HD och kontakt med personal och föräldrar. Det som också är viktigt att komma ihåg är att berömma eleverna. En lärare måste våga lita på eleven, vinna deras förtroende och låta dem visa vad de redan kan och förstärk det.</p>

Syftet med denna studie är att undersöka hur idrottslärare metodiskt arbetar för elever med AD/HD i idrottsundervisningen. Begreppen inkludering och exkludering beskrivs i arbetet. Bakgrunden till syftet är att det är omkring fyra till åtta procent av eleverna som har AD/HD. Metoden baserar sig på kvalitativa intervjuer med idrottslärare. Resultaten visar att idrottslärarna har olika uppfattning i hur undervisningssituationen är med elever med AD/HD. Några ansåg att deras undervisning blir mer strukturerad på grund av att de måste vara tydligare med instruktioner, medan andra ansåg att undervisningen fungerar utan särskilda anpassningar. Lärarna talar om att det är viktigt i undervisningen att man har rutiner samt att eleven på förhand vet vad som kommer att ske på idrottslektionen. Dessutom att man har kunskap om elever med AD/HD och kontakt med personal och föräldrar. Det som också är viktigt att komma ihåg är att berömma eleverna. En lärare måste våga lita på eleven, vinna deras förtroende och låta dem visa vad de redan kan och förstärk det.

Wireless ad hoc networks have been emerged to support applications, in which it is required/desired to have wireless ommunications among a variety of devices without relying on any infrastructure or central managements. In ad hoc networks, wireless devices, simply called nodes, have limited transmission range. Therefore, each node can directly communicate with only those within its transmission range and requires other nodes to act as routers in order to communicate with out-of-range estinations. One of the fundamental operations in ad hoc networks is broadcasting, where a node sends a message to all other nodes in the network. This can be achieved through flooding, in which every node transmits the first copy of the received message. However, flooding can impose a large number of redundant transmissions, which can result in significant waste of constrained resources such as bandwidth and battery power. One of the contributions of this work is to propose efficient broadcast algorithms which can significantly reduce the number of redundant transmissions. We also consider some of the security issues of ad hoc networks. In particular, we carefully analyze the effect of the wormhole attack, which is one of the most severe threats against ad hoc networks. We also propose a countermeasure, which is an improvement over the existing timing-based solutions against the wormhole attack. Finally, in the last chapter, we propose novel point compression techniques which can be used in Elliptic Curve Cryptography (ECC). ECC can provide the same level of security as other public key cryptosystems (such as RSA) with substantially smaller key sizes. Smaller keys can result in smaller system parameters, bandwidth savings, faster implementations and lower power consumption. These advantages make ECC interesting for ad hoc networks with restricted devices.

Peer-to-Peer networking technology is evolving rapidly. P2P networks overcome the limitations of client/server networks where each computer shares resources of other computer. There are different types of P2P networks depending upon their functionalities. Peer to peer networks provide long list of features like: selection of nearby peers, redundant storage, effi-cient search/location of data items, data performance or guarantees etc. It is important to see that how P2P can work with wireless ad hoc networks and why it is important. What are im-portant issues which come across by using P2P and wireless ad hoc networks together. How TCP/IP stack can be affected. How the whole system looks like in which P2P techniques are used with wireless ad hoc routing protocols to perform different tasks and services.