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7868 Uppsatser om Network theory - Sida 10 av 525
Network interdiction
Network Interdiction-problem innehåller två mot varandra stående styrkor, en användare och en angripare, somär inbegripna i en krigsliknande konflikt. Användaren använder ett nätverk för att optimera en funktion, t.ex.att förflytta en underhållskonvoj så snabbt som möjligt, eller maximera mängden materiel som transporterasgenom nätverket. Det innebär att användaren vill använda den kortaste eller snabbaste vägen vid transporter,och han vill maximera flödet genom nätverket. Nätverket kan t.ex. vara ett vägnät, kraftförsörjningsnät eller ettdatornätverk.
Strömmande video i trådlösa mesh nätverk : Streaming video in wireless mesh networks
This document?s content is the final report of the master´s dissertation Magnus Hällström did during springtime of year 2013. The dissertation?s subject is 802.11s wireless mesh networks with streaming video as a focus point. During the dissertation a wireless mesh network was set up with different attached cameras for streaming video. A sun panel solution was also tested with the goal of creating a package with a self-configuring network node streaming video, powered by nothing but solar energy. .
Nina på nätet : En netnografisk studie av politisk kommunikation i de sociala medierna
The Swedish election year of 2010 has just begun and the political actors are mobilizing their communication efforts to win the votes of the public. The political campaigns of 2010 have the potential to be the first where a new channel for political communication has the potential to make a difference ? the social media. This paper aims to describe in what ways a Member of Parliament, Nina Larsson (FP), together with the PR-agency Hello Clarice are using social media to conduct political campaigning on the web. It also aims to study if the professional consultants of Hello Clarice have any influence over Nina Larsson?s political communication.The theoretical framework which is the base for this study are theories of an extended public sphere in the age of mediation.
SDN : Software defined networks
This report is a specialization in Software defined networking. SDN really comes to revolutionize the industry and it?s under constant development. But is the technology ready to be launched into operation yet? The report would initially involve a number of problems that today's network technology is facing.
Pilotinstallation av fast och fjärravläst nätstationsmätning : Identifiering av för- och nackdelar med nätstationsmätning, Mälarenergi Elnät AB
Today?s electrical grid companies understand that better knowledge of and information about their grid can help realize a smart grid network. One way to gain better knowledge and information about the low voltage network is to install measuring equipment on the substation transformer´s secondary low voltage side that measures the low voltage network losses for that specific substation. By doing so, grid companies can, due to the calculation of the low voltage network losses, identify and address issues such as illegal power dissipation, unmeasured power outtakes, and unsatisfied technical documentation for the substations low voltage network.During 2012, Mälarenergi Elnät AB had a total electrical network loss (both medium and low voltage network losses included) of three to four percent of their total distributed electrical volume. Converting this energy volume into a monetary figure this accounts for a loss of around 30 million Swedish crowns.
Aldrig Färdig...
En möbel som har ett tydligt program, en tydlig funktion kan vara begränsande. I min metod har jag utgått ifrån en möbel och förbisett dess program för att vidga mitt sökfa?lt när jag har gjort om den. Jag har sett begreppen funktion, upplevd funktion och materiell funktion som värden som går att höja eller sänka. Möbelns nätverk av komponenter har tillåtits bli instabilt för en stund, för att sedan se till helheten och göra nätverket stabilt åter igen - programmet får komma tillbaka men med en ny gestaltning..
Att marknadsföra ett bibliotek på Facebook
With the advent of a range of social networks, librarians all over the world have startedto ask themselves how this new technology can be used as a way to market theirlibraries. Today's information websites and search engines are difficult competitors forlibraries and information centers, and are forcing traditional information institutions tomarket themselves in new ways.Marketing theories have traditionally concerned themselves with money transactionsand marketing of specific services and/or products. Relationship marketing theories, onthe other hand, focus more on the relationship between the customer and the companythat produces the product or service. These two parties are seen as co-producers, andrelationship marketing theories tend to focus more on a win-win situation, than on thecompany gaining power of the customer. The relationship is the important thing, and thetheories concentrate to a great extent on how to nourish these relationships.This paper is a discussion about whether Facebook as a social network is a usable toolfor library marketing.
KONSTEN ATT KONSUMERA - En kvalitativ studie om föreställningar, materialitet och identitet inom Every Day Carry
The purpose of this thesis is to study how today?s consumer society can be understood from ananalysis of the phenomenon Every Day Carry (EDC). The aim is thus to problematize the daily useof the artifacts that surrounds us and investigate how these can be understood as networks of humanand non-human actors, aswell as identity- and meaning-making practices in today?s consumersociety.The theoretical and methodical framework is built upon an eclectic variety of consumptiontheories,Michel Callon?s, John Law?s and Bruno Latour?s work on Actor-Network-Theory,Discourse analysis inspired by Michel Foucault, Ernesto Laclau and Chantal Mouffe and anethnographic methodology specifically adapted for online research. The empirical material consistsof photographs and commentaries from two EDC blogs aswell as commentaries regarding EDCfrom a commentary field on Youtube.com.
Implementation av fältbuss ASIC i FPGA
HMS Industrial Networks AB is in need of changing a communications solution that iscurrently based on an ASIC. This will be achieved by moving the communications solution toa FPGA with the help of the programming language VHDL. By doing this, it is possible toreduce the need for specific circuits, get a more flexible platform and thus get a cheapersolution.This report describes a solution for how to move a network protocol from an ASIC to anFPGA. The report shows that the network slave device is working under the guidelines forthis project. This means that it is quite realistic to implement a fieldbus protocol on an FPGA,using VHDL and to maintain the same functionality as the earlier communications solution..
Al-Qaida - mellan tankeprodukt och reell fiende
The present thesis closer examines what has come to be known as al-Qaida, partly from what al-Qaida is considered to be, partly from the consequences a certain picture of al-Qaida might give rise to. Between 1988-2001 most of this thesis sources refers to al-Qaida as a small, organized core group with some degree of cell structure. From 1991 to present days, many of the sources enlarge the picture of al-Qaida. From now on they start to view al-Qaida as either a network in itself or al-Qaida as a part of a larger islamistic network, not only as an organized core group with presumptive bases in Afghanistan. The most recent of theories regarding al-Qaida looks at al-Qaida as an ideology in itself (al-Qaedaism) or al-Qaida as a part of previously existing ideologies (Islamism, Neofundamentalism and Jihadism-Salafism).Al-Qaida is being seen - by scholars, journalists and terrorism experts - as an organization with a core group, a network in itself, part of a larger islamistic network and an ideology of its own or as a part of already existing ideologies.
En heterotopologisk analys av den kulturella infrastrukturen i Göteborg: Rio Rio-båten på kollisionskurs med ett stadsplaneringsmaskineri på drift.
This essays overarching aim is to contribute to the theoretical discussion of transformation processes that are shaping the urban landscapes and further to problematize contemporary planning discourses in Sweden. Drawing on the concept of Foucault?s heterotopia and actor-Network theory for spatial analysis, the paper seeks to analyze the complex urban landscape transformation process as an emergent property of human and non-human actor-networks seeking to transform and order space. With the district of Rosenlund in Gothenburg as a starting point, this thesis intends to examine how the cultural infrastructure - used by the residents and visitors of the city - are related to the city's planning and development processes. The case study is based on a boat (Rio Rio) in Rosenlund canal that is defined as a cultural infrastructure.
Tidssynkroniserade mätningar i vattenkraftstationer
Vattenfall and Svenska Kraftnät perform start-up tests, where hydropower generators are used to power up the electrical grid in case of a blackout. To monitor the electrical grid, Phasor Measurement Units (PMU) are used. Each PMU is individually equipped with a GPS-receiver to precisely timestamp the data relative to the official time UTC. During the test, it is also of interest to timestamp the measurement signals from individual hydropower generators to later compare with PMU-data, and thus study the power grids impact on the generator. The aim is to work out an appropriate method to make these measurements and to build a data acquisition system, capable of timestamp data relative to UTC, from a generator in one of Vattenfalls hydroelectric power stations. The problem is that the generator is located in an underground station which hampers the reception of GPS-signals and wiring should be avoided if possible. Time synchronization has been solved by using Vattenfalls network, which is synchronized by the network protocol NTP.
Small-worlds och rich-clubs bland bloggar : En nätverksanalys av den svenska bloggosfären under FRA-debatten 2008
Purpose/Aim: To find power structures within the blog network.Material/Method: Using keywords to find all available blog posts about the National Defence Radio Establishment from the blog search engine Twingly, and thereafter using the same blog search engine to find inlinks from other blogs, to those posts. The data is set into the context of the small-world networks models of Duncan J. Watts and rich-club models of Sergi Valverde och Ricard V. Sole.Main results: 5183 unique blogs have written about the subject in 22779 blog posts to which 28128 inlinks from other blogposts are made. Just over one fifth of the blogs are linkted to each other in one big network, where the remaining blogs stand without any ingoing or outgoing links.
Svenska Lantchips : Och deras internationaliseringsprocess
Svenska Lantchips is a Swedish SME sized snack manufacturer. Being a small, medium sized, family-owned business with branches throughout the world, they make an interesting company for a case study. The case study I have conducted focuses on the internationalisation process of this family owned company ? how they, despite their size, find ways to keep up an unique business structure, designed for internationalisation.The aim of this essay is to compare Svenska Lantchips? internationalisation process with traditional internationalisation theories and see if these are compatible with this company. The theories used are The Uppsala Model, The Network Model, and The Born Global Theory, with The Born Global Theory representing the younger generation of models.After undertaking an in-depth interview with Michael Hansen, business developer at Svenska Lantchips, I collated a substantial amount of material, which I have used as the basis of this essay.
Referenser i informationsåtervinning: utvärdering av en sökstrategi för citationsindex
In this essay, a search strategy for citation index is studied. The strategy, which is essentially a citation cycle, starts with documents retrieved by a subject search, wherefrom new documents are identified following the network of citations backwards and forwards in time. Based on the theory of polyrepresentation, the strategy exploits overlaps between cognitively different interpretations of the same documents in order to automatically select references seed documents used as a starting point for the forward chaining. The purpose of the investigation is to evaluate the retrieval effectiveness of the search strategy and to find out whether the strategy can be used to expand a subject search with the help of the network of references in order to retrieve new relevant documents. Two questions are formulated: 1a.