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572 Uppsatser om Mathematical contents - Sida 23 av 39

Hur arkiverar Sveriges byggföretag? : Ett försök att finna arkiveringspraxis i en för kulturarvet viktig företagsbransch

What traces of their actions are the Building Corporations in Sweden leaving in their archives and are they followingsome archival policies? This thesis is trying to answer that question. For that reason 25 archives fromSwedish Building Corporations have been investigated concerning their size, contents and age. Furthermore apoll performed by the Swedish National Archives in cooperation with the Swedish Employers? Confederationhas been analyzed.

En analys av forskningsfronten inom medicinsk etik

The purpose of this Masters thesis is to analyze the research front within medical ethics. We wish to identify which research themes that are included in the subject field of medical ethics. The research themes can be identified by a couple of bibliometrical methods and techniques. In our case, it is bibliographic coupling combined with a cluster analysis. The analysis is accomplished by the extracted references from articles in the two journals Bioethics and Journal of medical ethics.

Chinese Remainder Theorem

Chinese Remainder Theorem is used to solving problems in computing, coding and cryptography. In computing we can compute with shorter numbers instead of large numbers and this will make the computing-process faster and easier. In coding it can be used for error-searching and error-regulating.Cryptography means that we can send a coded message and that no one will be able to read it without the decode-key which is based on prim-numbers. I am writing about the history of mathematics and how the number- and decimal number-system is used in Babylon, Egypt, Greece and in China. Abacus was a very important aid to calculate advanced mathematical problems.

Automatisk genreklassifikation : en experimentell studie

This thesis aims at examining to what extent a few, algorithmically very easily extractable document features can be used to classify electronic documents according to genre. A set of experiments is therefore carried out, using only 11 such simple features in an attempt to classify 84 documents belonging to electronic academic journals into three manually identified genres: table of contents, article, and review. The 11 features are also divided into three sets, containing metrics of words and sentences; punctuation marks; and URL links, respectively. The performance when using these sets of features is then measured with regard to classification accuracy, using a k-NN classifier, four different values of k (1, 3, 5, 7), and both leave-one-out and 10-fold cross-validation. Best results are achieved when using all three feature sets (i.e.

Skolbibliotek + En-till-En = SANT?: En fallstudie av ett skolbibliotek i En-till-En miljö

Projects to equip every student and teacher with a laptop, with the intention to improve academic results, have rapidly spread through the country. New technology, new contents and new ways of learning have changed the learning envi-ronment. The school library, being a part of this environ-ment, faces the same changes and challenges.The purpose of this thesis is to study how the school library is being affected when a One-to-One project is carried out in a learning environment. The research questions concern how the school library is viewed within the organization and also how the change affects both the school library and the school librarian.The empirical material of the thesis includes five qualitative interviews carried out on location, at a single selected school. The interviews are followed by a study of relevant documents, all produced within the organization.To understand the organization in which the school library operates, as well as the school library itself, I chose to divide the theoretical approach in two: Christensen?s et al.

Detektering av krypterade filer

In contemporary encryption the vast amount of text subject to cracking has brought about the demand for methods distinguish files more likely to be encrypted. The encryption software Truecrypt can encrypt files that are not possible to identify with a file signature. To solve the detection problem, an algorithm sensitive to the absence of structure in the very code of files was developed. The program was written in the programming language EnScript which is built into the forensic software suite EnCase. The essential part of the algorithm therefore deployes the statistic of a chi-square test for deviance from a uniform distribution to distinguish files with contents that appear to be random.

Hur inverkar olika andel vallfoder i utfodringen på produktion, hälsa och beteende hos mjölkkor? :

Cows are ruminants and they need fibers in their feed and sufficient eating time to function psychologically and physiologically. Many of our cows don?t get enough forage and too much concentrates, which given in the wrong way may cause health and behavior problems. Too much concentrates at once makes the pH in the rumen sink and this may cause decreased fiber utilization since the microbes in the rumen are negatively affected by this. The cow may also get serious problems such as laminitis and abomasal dislocation.

Alternativa förpackningsmaterial och konstruktioner för »Hackman tools«-serien

Choosing a new plastic material for a container includes several different steps. In this case,the Finnish company Hackman needed a new type of packaging material for theircutlery- and kitchentool series »Hackman tools«. The project was carried out in cooperationwith the design agency Ytterborn & Fuentes, which has Hackman as a client.Several different demands were put on the material in order to fulfill as many of the clientswishes as possible. The most urgent problem with the existing container was the difficultysfor the customer to clearly see the contents in the container. Because of this problemthe customer tried to open the container in the shop.

En algoritm för linjära optimeringsproblem

Denna uppsats behandlar en algoritm som löser linjära optimeringsproblem. Algoritmen bygger på en liknande idé som simplexalgoritmen men i denna kan startvärdet även vara en punkt inom tillåtet område eller på randen till detta område. Det behöver inte nödvändigtvis vara en hörnpunkt, vilket simplexalgoritmen kräver. Under algoritmens gång kommer iterationsvärdena att ligga på randen till det tillåtna området för att slutligen hamna i ett hörn. Därefter går iterationsvärdena från hörn till hörn tills slutligen optimum har nåtts.

Språket i matematiken - ett verktyg att räkna med, en kvalitativ intervjustudie om språkets betydelse för begreppsförståelsen

Syftet med vår studie var att ta reda på hur pedagoger tillvaratar barns informella kunskaper och hur de konkret arbetar för att utveckla barns begreppsuppfattning i matematik med hjälp av språket. Vi avsåg även att undersöka förutsättningarna för en sådan undervisning. Vi ville se till både individ-, grupp- och organisationsnivå. Ytterligare en specialpedagogisk frågeställning som vi avsåg att undersöka var hur barn i behov av särskilt stöd gynnas av detta arbetssätt. Vi genomförde tio kvalitativa forskningsintervjuer, som var delvis strukturerade, med pedagoger som arbetar med språket på ett medvetet sätt i sin matematikundervisning.

Manusutveckling av digitala läromedelsapplikationer i matematik : En studie av samtida pedagogisk forskning och utveckling av applikationsmanus för matematikämnet i gymnasieskolan

In a world where digital media is becoming a greater part of people?s everyday and working lives it is plausible to assume that the upcoming generation of pupils expect the teaching media to adapt thereafter. It is this assumption of an increased demand that Natur & Kultur is hoping to be able to meet. This thesis has been a stage in the process of producing digital material in the subject of mathematics for high school students. Specifically the aims of this thesis have been to make a rough description of the largest competitive companies? products within the same market, explore and put together a brief theoretical foundation of contemporary research and produce concrete examples of ideas for digital applications.

Färdplanen & Genèveinitiativet : Förutsättningar för framsteg i den palestinsk-israeliska fredsprocessen

The aim of this paper is to examine if the two latest Peace Plans in the Palestine-Israeli con-flict observes the sources of the conflict and presents measures in the purpose of solving them. The point of departure is William Azar?s theory of protracted social conflict (PSC). According to Azar, the internal sources of a PSC lies in three clusters of variables: the com-munal content of a society, the deprivation of human needs as an underlying source of PSC, and the role of the state in the deprivation or satisfaction of human needs. The study is de-signed as a multiple-case study where the units of analysis are the Roadmap to Peace and the Geneva Initiative.

Flickors och pojkars matematiska uttryck i förskolan : Ett genusperspektiv

Denna kvalitativa studie behandlar matematiska uttryck hos förskolebarn. Syftet med studien är att undersöka och beskriva flickors och pojkars matematiska uttryck i förskolan samt vilka eventuella skillnader som kan iakttas i deras uttryckssätt. Detta mot bakgrund av att matematiken har fått ett allt större utrymme i förskolans verksamhet efter att förskolan fick sin första läroplan, Lpfö 98, med uttalade mål att sträva mot. Tidigare forskning visar att pedagoger bemöter flickor och pojkar olika i förskolan. Kan det ha att göra med att de uttrycker sig olika? Med detta som grund ville vi undersöka om det finns skillnader i flickors och pojkars matematiska uttryck.Matematik är ett språk och barn i förskolan utvecklar matematisk förståelse genom upplevelser i lek och sociala sammanhang.

Den kontrollerade tekniken : En studie om de exklusiva Plymouthbrödernas förhållande till samtida teknik

The purpose of this thesis is to examine the Swedish Plymouth brethren?s relation to contemporary technology. What types of technology are considered acceptable and where do they draw the line? Due to the brethren?s separation from the parts of the world they believe leads people away from God, such as the entertainment industry, immoralities etc., they reject use of television and radio. These two are viewed as uncontrolled types of technology since the user does not have control of its contents.

Dämplindningens inverkan på spänningens kurvform i en vattenkraftsgenerator

Harmonics are a well-known problem that has to be dealt with in the design of thegenerator. Internationally accepted standards limits the amount of harmonics allowedin the no-load voltage. These limits can be difficult to fulfill with integral slot winding,where the number of slots per pole and phase is an integer. The presence of thedamper winding often makes the problem with harmonics even worse and harmonicswith frequencies of order 6q±1 arise with significant amplitude. How the damperwinding is designed affect the content of harmonics in the no-load voltage and the aimwith these ? has been to investigate in which extent design of the damper windingaffects the contents of harmonics.Simulations with the 2-D finite element method have showed that if the damper barsis centered in the pole shoe, the amplitude of the harmonics of order 6q±1dependsboth on the ratio between the stator slot pitch and damper bars slot pitch and if thedamper bars are connected between the poles or not.If the damper bars is displaced with ¼ stator slot pitch alternately, the amplitude ofthe harmonics of order 6q±1 is reduced and the influence of the ratio between thestator slot pitch and the damper bars slot pitch will vanish.

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