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735 Uppsatser om Radio front-end - Sida 11 av 49
Design av stimuligenerator för radarmålsökare
During the development of microwave based sensors such as radar target seekers, input signals are needed to verify the performance of the system. Therefore, a channel board has been developed by previous thesis projects at Saab Bofors Dynamics. It uses a technique called Digital Radio Frequency Memory (DRFM). The purpose of this board is to sample and digitally store radio frequency signals in order to reconstruct them after a certain delay.The aim of this thesis project was to use the channel board named above to construct a portable instrument for generation of stimuli signals. This assignment has been divided into two tasks: firstly, to construct and put together the hardware components and secondly, to implement a graphical user interface for the instrument.
Sound and Play
AbstractThe project "Sound and Play" have been implemented in collaboration with the toy company BRIO in Malmo. The purpose of the project was to examine whether and how BRIO in the future could develop toys around sound for Toddlers.The problem formulations that would be answered after completion of the project was "How could BRIO broaden its product range with the help of audio toys?", "How can you combine toys and sounds in an interesting way for children?", "How do you create a toy with sound that is fun for the child, but not annoying for parents?". Currently BRIO only has two toys with sound in this age group.The expression of the toy was going to be a mix of classic and cool and the overall feeling of the toy was going to be explorative and arouse curiosity in the child. This feeling would be communicated through simplicity and joy.
Data och Tv-spel : Data och tv-spels påverkan på ungdomar
The purpose of this study is to investigate in what extension students experience that computer and videogames affect them. I have chosen to focus on the physical, mental and social affect that this activity might bring them. I have also examined how much time the students spends in front of the computer or the videogame and in which social context they play.The method I have chosen to use is a quantitative opinion poll which I used in three classes of the later junior high and I have also conducted five qualitative interviews.The conclusions I have drawn from this investigation are that computer and videogames affects teenagers both physically and mentally. Physically the affects of playing videogames mostly can be derived to the physical inactivity they expose themselves to. The students themselves did not experienced any positive physical affects from their playing.Amongst the mental affects that stood out the most I recognized the social training that online gaming provided and also the intellectual stimulation that certain games offered the player.
Läggning och resning hos ungtjurar i liggbås : inverkan av båsfrontsutförande
Cattle have a species specific movement pattern when lying down and getting up. They need sufficient space for their heads to perform these movements normally. The aim of this study was to investigate the lying down and getting up behaviour of beef bulls at a Swedish farm operation. The hypothesis was that bulls older than 10 months (over approximately 400 kg) were disturbed by a horizontal front rail and that the time to lie down and get up differed from what can be regarded as normal based on earlier scientific studies. The bulls were Swedish Red and White (SRB), Swedish Friesian (SLB) or crossbreeds of these two, and were kept in a cubicle system with a stall front design where there was a horizontal rail 40 cm above the stall floor.
Mentala problem i samband med sång inför publik - En studie i hantering av nervositet och scenskräck
Syftet med uppsatsen är att försöka förstå varför mentala problem vid ett framträdande i sång uppkommer samt att hitta lösningar till dessa. Bakgrunden till att jag vill skriva om detta är att jag under praktiker och arbeten med sångelever märkt att just mentala problem ofta hindrar människor från att bland annat framträda inför en publik. Dessutom känner jag mig själv hindrad av denna typ av problem vid framföranden. Mina frågeställningar har bland andra varit hur sångaren påverkas av sin nervositet och vad kritik spelar för roll. Självförtroende och självkänsla är förutom nervositet och kritik termer som dykt upp vid flertalet tillfällen under arbetets gång.
En studie av besöksantalet i tre tätortsnära skogar i Stockholmsområdet med hjälp av Radio Beam Counter : ett räkneverk baserat på radiovågsteknik
Forests affect its visitors in many positive ways. It is the acknowledgement of this fact that has prompted an EU-LIFE sponsored project entitled ?Urban forests for mankind?. It aims to lure or welcome more citizens near urban forests to experience nature in its many forms.
In Sweden, three municipalities have decided to take the lead in this effort. Huddinge district, Haninge district, and the Royal Djurgården Administration in conjunction with The National Board of Forestry in Mälardalen are in the midst of this four year project (2001-2005).
Frequency of unsuccessful milkings in automatic milking rotary : effect on milk yield, lactose content and somatic cell count at udder quarter level
Developments in milk production are heading towards fewer but larger herds where the milking process is often fully automated. Automatic milking systems were launched in the 1990?s and in the year 2010 the Automatic Milking Rotary (AMR) was introduced. As a rule there are no supervision personnel present during the milking event in systems with automatic milking. This means that there is a risk that cows can be incompletely milked in one or more udder quarters, for example if the robots fail in attaching the milking cups or if the cow kicks off the milking unit.
Vilket ursprung har nyheten som du läser i din lokaltidning? : - En fallstudie i lokaltidningsjournalistikens informationskällor och informationskanaler
AbstractTitle: Where does the news that you read in your localpaper come from? (Vilket ursprung har nyheten som du läser i din lokaltidning?)Number of pages: 45 (57 including enclosures)Author: Elin RantakokkoTutor: Göran SvenssonCourse: Media and Communication Studies 30 hpPeriod: Fall of 2007 University: Division of Media and Communication, Department of Information Science, Uppsala University Purpose/Aim: This paper has the aim to make a systematic survey of the information source and channels that local newspapers use. How much space they get in the paper and how the newspaper works with these sources and channels. The front pages of the newspaper are going to be compared with the insides of the newspaper. The reports roles in the making of news are also examined.Material/method: To be able to answer my questions I?m going to use three different methods.
Spatial TDMA in Ad Hoc Networks with Antenna Arrays
In modern military operations the requirements of transmitting large amounts of information have increased substantially during the last decade. This increases the demand for high-capacity radio networks. It is also very important that military decisions are made on recent and correct information and this implies that low and known delays are required. The existing military radio ommunications, within the Swedish army, do not meet the requirements for capacity and delay. We have investigated how the capacity and average delay can be improved in an Ad Hoc network with STDMA by using antenna arrays.
Den svenska generalstaben som lärande organisation : kunskapsutvecklingen avseende strid om befästa ställningar under första världskriget
The intention of this essay is to study the Swedish General Staff as a learning organisation during the period of 1914-1918 based on the theoretical work developed by the philosopher Bertil Rolf. Previous international research on the Prussian/German General Staff has shown that it is considered to be the first learning organisation in history. The Swedish General Staff was based on the German General Staff model and the focus of this study is to compare the development the tactics in Germany and Sweden regarding defence and attack in trench warfare. The questions are: How were the possibilities for gathering and analysing informa-tion affected by the war? Which conclusions were made for trench warfare in Swedish conditions? What experiences from the war and exercises in Swedish army were implemented in manuals and training?The conclusion of the study is that the Swedish General Staff was functioning as a learning organisation during the WWI through the ability to follow the international development, mainly in the Central Powers, and by modifying the experiences to the prevailing Swedish strategic and tactical conditions.
Rapport för det gestaltande arbetet "Rampljuset" - realityradio
Det finns många så kallade dokusåpor, eller realityserier som vi kommer kalla dem i denna rapport, på teve. Från 1995, året då realityserien kom till Sverige i och med sändningen av ?The Real World Stockholm?, har antalet produktioner inom realitygenren ökat kraftigt. När vi i höstas gjorde en förundersökning gällande realityserier (?Den redigerade verkligheten ? en studie i realityseriers berättarteknik?) fann vi att radiomediet inte alls hade samma utbud inom realitygenren som teve har.
Perspektiv på erfarenheter av socialt arbete som potentiell skyddsfaktor
Alkohol förekommer i många människors vardag och det är ett fenomen vi har att förhålla oss till. Samtidigt är alkoholmissbruk ett stort socialt problem som vi ofta möter inom socialt arbete. Det är i vår mening därför alltid aktuellt att studera hur vi talar kring alkohol. Denna uppsats syftar till att belysa den bild av alkohol och alkoholmissbruk som framkommer i Sveriges Radio idag, vad detta får för konsekvenser för vår förståelse av alkohol som fenomen och av alkoholmissbruk som ett socialt problem. För att genomföra denna studie har vi använt oss av diskursanalys, mer specifikt så har vi använt oss av diskursteori som teoretiskt angreppssätt och metod.
Dogs' behavioural responses to repeated positive events
Assessing the emotional state in animals is important in order to establish the quality of their welfare, therefore it is important to investigate under what circumstances animals experience these emotions and to find indicators of their existence. The aim of this thesis was to detect possible behavioural indicators for positive emotions in dogs. These behavioural indicators could be helpful to increase both dogs? and humans? overall well-being in today?s society since they could help e.g. dog owners and caretakers to interpret behaviours displayed by dogs and their intentions so they can respond accordingly.The subjects used were 9 research beagles and each dog participated in three different treatments, assumed to be experienced as positive situations, where communicative interaction was initiated with the dog by engaging in 1) physical contact (P), 2) verbal contact (V) or 3) both physical and verbal contact simultaneously (PV).
Ekot från djupaste Afrika : En kritisk diskursanalys av nyhetsprogrammet Ekots gestaltning av konflikten i Goma, Demokratiska Republiken Kongo.
This is a critical discourse analysis of the conformation of the conflict in Goma, Democratic Republic of the Congo, as constructed by Ekot, a news-show on Radio Sweden. The ambition of this bachelor thesis is to examine the production of a Congolese conflict for a Swedish audience and to find out how the construction differences with and without a reporter in the field. To obtain this purpose the narrative is studied as well as the use of voices that define the conflict. The construction of proximity between Swedish audience and the Congolese event and the meaning of sound to stabilize the formation of discourse within foreign news is examined as well. To conform and explain foreign news it must be put in relation to a starting point.
Jag såg det på Facebook : Unga människors självpresentationer på Facebook
Title: I saw it on Facebook ? Youth presentation of self on FacebookAuthors: Nicole Dreher & Anders SkoglundPresented: 01.06.2010Purpose: The purpose of this thesis was to examine how the, in the study, participating youths make their presentation of self on their Facebook profiles.Methodology: The method used in the thesis was a social semiotic analysis focusing on the social semiotic concepts: semiotic resource, semiotic potential, affordance, denotation and connotation. A social semiotic analysis of composition was also used with the purpose to gain a deeper knowledge of the social semiotic affordances of Facebook?s composition.Theoretical perspectives: The theoretical base of this thesis consists mainly of Erving Goffman?s theory on presentation of self in everyday life as well as relevant theories to youth culture in sociology and identity in social psychology.Conclusions: The results show that the youth?s presentations of selves mostly takes place in their profile picture, status updates, groups, fan pages and through their communication with other users on their wall. The borders between front and back stage on Facebook entirely depends on the norms that the reader expects the profile owner to uphold.