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485 Uppsatser om Channel estimation - Sida 4 av 33

Gäddan & fisket i Ringsjöholm : en osteologisk metodstudie i säsong & bevarande

This paper presents the results from an osteological method study of the Ringsjöholm fishbone material. Ringsjöholm is located in Scania, southern Sweden and is 14C dated to 5960-5200 B.P. The aim of this paper is to critically analyse methods used on fish bone material in estimations of season. Three different approaches were used to estimate the fishing season at the Ringsjöholm settlement; 1) identified species, 2) size estimations of the pike based on Enghoffs (1994-95) regression formulae of os dentale, and 3) growth rings of the pike vertebrae.The identified species and the size estimations of the pike points to the fishing being active both during spring and summer. Growth rings analysis of the pike vertebrae didn?t give any quantitative results because of fragmentation.

Modelering av Wideband : Code Division Multiple Access

Today wireless transmission of data is becoming more and more popular and the need for faster transmission rates is increasing. Since the bandwidth is limited it is important to try to use it to the fullest. CDMA is a technology that allows multiple accesses on the same frequency and time thus making it very bandwidth efficient. The CDMA technology was first introduced in the second generation?s cellular systems but has since then been improved and is reused in today?s 3G systems as Wideband CDMA.

Hydroakustisk kommunikation med bandspridningsteknik

This thesis investigates techniques for stealth hydroacoustic communication using spread spectrum. The Swedish naval defense organisations have a vision that all their units should be able to communicate with each other, even between underwater vehicles. But the properties of water makes it a complex channel to use for wireless communications. Radiomagnetic waves have very limited range in water, therefore acoustic waves are used. In this report the basics of wireless communication systems are described including source coding, channel coding, modulation techniques as well as different techniques for spread spectrum.

Öppenhet och kostnad för eget kapital: En studie på den svenska marknaden

Previous research has discussed how voluntary disclosure relates to the cost of equity capital. Theories of estimation risk support a negative association between disclosure and cost of equity capital, as empirically documented by Botosan (1997) among others. In this Bachelor thesis we investigate whether such a relationship exists on the Swedish capital market. Using the CAPM to estimate the cost of equity capital and a disclosure index based on Aktiespararen?s annual evaluation of corporate disclosure, we test a model where disclosure explains cost of equity capital.

Support i den världsvida väven : En studie om kundtjänst på Twitter och Facebook

Customer service has traditionally consisted of telephone, mail, and later on chat.But the entry of social media has changed the way companies exercise customerservice. Companies should ask themselves whether the same type of traditionalcommunication may or may not function in a new channel and thus whether itcan be applied to social media.The purpose of this study is to describe the companies? use of customer servicein social media and how the communication differentiates from thecommunication in traditional customer service, and also to define the effect onthe customers? relationship to the company. To reach our conclusions we havecombined theoretical references with qualitative interviews.By our analysis, we found that the communication in social media expandsthe possibilities. By entering an unfamiliar channel, customer service has hadto adapt themselves and their language.

Marknadsföring i maktens korridorer : En studie om sociala mediers funktion i riksdagsvalet 2010

The current election is causing a debate in the Swedish media. The parties are trying to convince voters by spreading interesting and informative messages through different kind of media. Social media has emerged as a new way of reaching voters. All the current parliamentary parties have implemented this communication channel into their marketing strategy. People have both admired and judged the channel´s applicability in election campaigns.

"Halfpipe Active Channel"- developing a secure communications protocol

With the advent of powerful multimedia capable mobile phones, the market for mobile services is flourishing. Zenterio AB's Halfpipe Active Desktop is a complete distributed mobile service platform a with a powerful server and platform-independent client. The communication between the client and server takes place over a GPRS-capable mobile network. The purpose of this thesis is to develop a secure communications protocol for use between the Halfpipe Active Desktop client and server. This is done by determining requirements, analyzing candidate protocols and then by designing the final protocol.

Kommunikationsverksamhet i ett föränderligt samhälle : En studie om hur Gällivare kommun bör kommunicera med sin befolkning under samhällsomvandlingen

The purpose of this study is to analyze which communication strategies andinformation- and communication channels that Gällivare municipality should useunder the urban transformation to communicate with the citizens. The studyconcentrates on the age-groups 16 ? 24, 25 ? 44, 45 ? 64 and people that are 65 yearsand older. This selection has been made as a segmentation of the citizens and is oneof the essay questions which refers to study the channels that each age-groups prefer.The study is a quantitative one and is based on a questionnaire survey directed to thecitizens and it?s 85 people who participated.

TV4 - kan kommersiellt och demokrati gå hand i hand? : - En studie om extern påverkan i en tv-kanal och hur kommersiella och demokratiska intressen förhåller sig till varandra 

Introduction: As the media landscape has changed so has fierce competition in the market, giving an effect of stronger commercialization of the media. Societal problems in our society are caused by increased commercialization and market orientation. Media has gone from trusted social institutions to focus on their own economic interests, where owners are expected revenue. The content of the media is characterized more and more by entertainment, because it attracts a larger audience. On one side media is expected to contribute to democracy in society and on the other they are expected to contribute profits to their owners, which creates a conflict in today?s media society.

Underbart är kort?: En utvärdering av reklam- och upplevelseeffektivitet vid reducerad reklamtäthet i TV

The high and seemingly increasing degree of consumer avoidance and disliking of television advertising breaks should raise many questions for commercially financed television networks as it can be argued that benefits sought by both viewers [seeking a fulfilling viewing experience] and advertisers [seeking advertising effectiveness] are eroded by this effect. This thesis studies effects on advertising effectiveness [RecallBRAND; AttitudeBRAND; AttitudeAD] as well as on the viewing experience [SatisfactionPROGRAM/CHANNEL; Attitude PROGRAM/CHANNEL; IntentionPROGRAM/CHANNEL] given a reduced degree of advertising clutter. By conducting an experiment two breaks are compared, one having the standard primetime nonprogram time units (5 min and 30 sec *3?16minutes/hour) and the other the standard nonprogram content cut in half (2.45 min *3 ?8min /hour).Results show that the reduced breaks award advertisers with higher commercial effectiveness. Measures of RecallBRAND demonstrates no differences between the standard and the reduced break, implying a significantly increased likelihood to be recalled and an equivalently lowered risk to be forgotten in the reduced break.

Resan är målet: En kvantitativ studie om kongruenta erbjudandens påverkan på köpintentionen

The technological development and increasing popularity for integrated multichannel solutions constitutes both severe opportunities and challenges for todays' and tomorrows' retailers. On the account of consumers leaving traces when using digital channels and the technological development enabling retailers to use this information to create relevant offers, goal-congruity is relevant to apply in the multichannel shopping context. Based upon previous research on goal congruity and channel integration, our main purpose in this study is to increase the understanding for how congruity in an offer increases the intention to redeem the offer. Several studies focus on and contrast the product characteristics hedonic and utilitarian. However, it has been stated that it is crucial that research also examines the difference in target audience, buying situation and as examined in this study: buying decision process.

Optimering av Karaktärer mot Unity

Examensarbetet undersöker prestandakostnader och flaskhalsar för spelgrafik samt beskiver vanliga optimerings tekniker som tillämpas i industrin. Rapporten ger sig på uppgiften att visa exempel på prestandakostnad. Det framgår att dagens spelgrafik är för komplex och situationsberoende för att komma med annat än enkla abstraktioner man kan använda sig att göra en estimation på prestanda..

Störs laxens lekvandring i en kraftverkspåverkad älvsträcka? :

The upstream spawning migration of Atlantic salmon (Salmo salar) at the confluence area between the power-station outlet and the bypass-channel in river Umeälven (flow 430 m3s-1) was compared in 2004 and 2005, two years with different experimental flow-regimes. In 2004 the water flow in the bypass-channel was altered during the day with increased flows during the nights while the water flow in 2005 mainly was altered between the weekdays and weekends. Salmon showed altered migratory behaviour in this confluence area, assessed with telemetry (n=116) and echo-sounding, with up- or downstream responses depending on flow-changes in both the bypass and the power station outlet. Increased turbine flow through the power-station generally attracted salmon into the tunnel outlet area while increased spill-flows facilitated salmon to enter the bypass. Echo-sounding in the confluence area showed an increased swimming activity up- and downstream due to time in the day and flow-rates through the tunnel outlet. No changes in activity could be detected due to increasing or decreasing flow through the hydro-power facility.

Webbaserad informationskanal vid stamrenoveringsprojekt : Ett verktyg för informationsflöde från entreprenör till boende?

Pipe replacements with bathroom renovations are complex construction projectshighly dependent on the construction work carried out in the residents? homes whilethe residents still live there. This fact makes the flow of information from contractorsto the residents of an important success factor. In the current situation thecontractor, Aros Bygg & Förvaltning AB, notifies the residents? information throughpaper notification, which gives managing the work involves a lot of paper work.This thesis examines whether and to what extent the contractor may replace thepaper notification with a web-based information channel.

Sociala medier ? strategier,möjligheter och risker

Social media, with its immense and continuous flow of information, has in recent years growntremendously in terms of users and content. This increase has led companies and organizations keen to be seen within these channels of communication, but do they always have a clear idea of how andwhy, and are they aware of the risks that are associated with it? Current research on social media is somewhat divided in two. The debate concerns, among other things, what value the information on social media has, and whether the media is really a good communication channel or not. This raises several questions, for example can a company really afford to remain outside of social media with allthe information it generates? This research aims at answering these questions in order to further understand how organizations discuss social media presence and strategies.

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