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1277 Uppsatser om Mathematics - probability and statistics - Sida 50 av 86
Analytisk dimensionering av räddningstjänsten i Skåne Nordväst
This report is a part of the process of enhanced cooperation between fire rescue services in the region of North West Scania. The aim of the report is to study and analyze how the fire rescue service should be structured, in terms of rescue units and personnel, if no account is to be taking to the current organization. Two types of accident are considered in the report, traffic accidents and building fires. These are more affected by decreased response time than other accidents. Several suggested organizations are presented and they are evaluated with the computer program REP.
Kraften i motivation! : Studiemotivation hos elever i åk 9
Following study is about motivation from a student perspective. Based on the prescribed literature and published research, the concept and field of motivation have been illuminated. The purpose of the study was to examine how students in ninth grade perceived their educational motivation and what kind importance they considered it had for their performance in school. The study is also supposed to base upon the result; clarify the differences if any between schools. In an attempt to get a clear image of this a quantitative method in the form of surveys was made on two schools in the Stockholm region. One of the schools had a really good merit value, and the other had a rather poor merit- value. By choosing a quantitative method a relatively large number of students where able to participate and equally large quantity of statistics have been presented. The result point at motivation in the participating students in both schools can increase and decrease through different factors.
Förhandsbedömningar : Förklaringar och konstruktioner
AbstractIn Östhammar a change has been noticed in the statistics regarding incoming reports, appraisals and investigations concerning a suspicion that a child or youth may be harmed.There are some earlier reaserch made concerning the sorting process that takes place when a report is made. In Östhammar the social workers have been interested in finding out what the main reasons are for not opening an investigation. It has also been some research from the ?sociology of childhood perspective? on how childhood is being constructed and how children are positioned in the investigative texts. From a social constructionist perspective and by using both a quantitative and a qualitative research, I have examined all the reports that have not led to an investigation from the first quarter of 2011 in Östhammar. This to find out the main explanations for not investigating and how children are positioned in such appraisals.It has been shown that most appraisals closed either because of the situation which led to the declaration no longer exists, to another input already exists, the problem is not seen as serious or that it was felt that the parents are capable of giving the support they need. I have discovered that the childs voice is missing in most of the report investigations. I have not found any explanations to why one has chosen not to speak with the child, but there may be explanations such as limited time, limited knowledge or a will to spare the child the discomfort..
Transportbranschen : Miljöanpassning utan negativa företagsekonomiska konsekvenser, är det möjligt?
This paper is about how transport companies in the future will be able to adapt their activity to an environmentally sustainable development without the effect of negative company economic consequences. Today, the environmental threat is a global problem and knowledge about that effluent of carbon dioxide have a negative impact on the climate is generally known. A transport system that works well is important for Sweden, but the sector has a negative impact on the environment. Regulation and legislation for increased environmental requirements often meets resistance and fear that the work will be hampered by increased costs for environmental work that can lead to an international decrease in competitiveness. The transport companies have outside pressure from the society to do something about the environmental issue, however the companies? customers are not ready to pay a higher price for environmental work.
Matematikundervisning genom problemlösning : En studie om lärares möjligheter att förändra sin undervisning
Syftet med denna studie var att undersöka och visa flera sätt att undervisa i matematik genom problemlösning samt att undersöka vilken inverkan forskning inom området har i praktiken. I undersökningen ingick intervjuer och lektionsobservationer hos tre lärare som systematiskt använder sig av problemlösning i sin undervisning. Resultaten från undersökningen visar att problemlösning kan användas på olika sätt och med olika syfte i matematikundervisningen. De visar också att det finns både gemensamma och särskiljande aspekter mellan de observerade lektionerna samt mellan lärarnas synsätt på problemlösning. Dessutom tyder resultaten på en viss sammankoppling mellan lärarnas undervisning och de forskningsresultat som finns rapporterade i litteraturen.
VIBRATIONSSKADOR - FÖREKOMST OCH FÖREBYGGANDE : Analys av ett strukturerat arbetssätt inom bostadsproduktion
Ask any constructional worker and there is a high probability that this person knows a colleague with pain or other disorders caused by working with power tools.According to the Swedish Work Environment Authority 71 percent of the Swedish constructional workers is exposed to vibrations at least 25 percent of the working hours. Despite this, the number of reported occupational sicknesses caused by vibrations is as low as 1, 4 percent.JM Ltd. is one of the largest constructional companies in Sweden. Their main business is new housing and development of residential areas. God quality and low impact on the environment is a part of great importance in the company?s long-term goals.
Transferfunktionsmodeller modellering och prognoser av Sjötransportindex
We have by Statistics Sweden (SCB) been given the task of using different dynamic regression models in order to forecast service price index for sea transport. The aim is to see whether these models provide better forecasts than those previously used. This essay aim to identify, estimate and evaluate the selected prediction models. Through our data material we were given access to 28 sightings of sea transport index during the period of 2004 q1 to 2010 q4. We have chosen to evaluate three different transfer function models, one ARIMA model and one naive forecasting model. The input variables we decided to test in our transfer function models were the price of petroleum products, the port activity in Swedish ports and the lending rate of Swedish Central bank. The results of our study suggest that transfer function models generally provide better models than the ARIMA model and the naive forecast model.
IT-säkerhetspolicy ? efterlevs den av anställda?
ABSTRACT
The main purpose of IT security policies is to protect companies against
intrusion and unwanted spread of information. Statistics show that IT related
crimes tend to increase and because of that it is important, from the company?s
side of view, to be well prepared. The IT security policy is an important part
of that preparation.
A lot of the crimes related to IT can be deduced indirectly to employees at the
companies where the crime takes place.
Hur ofta hälsar du på din granne? : En kvantitativ studie av integration som förklaringskraft beträffande befolkningssammansättning och radikala högerpopulistiska åsikter
A logical cause of migration is of course immigrants which is a topic always creating discussions. When arriving in a new country a process of integration with the goal to adapt to the environment is started. This study will explore the need for integration and seeks to examine the connection between population composition and radical right opinions.To fulfill the aim, a multivariate regression analysis is done on aggregated level in Sweden with statistics concerning the year of 2010. The relation between ethnic composition and voters support for the Swedish radical right party Sverigedemokraterna is studied as well as integration as an explanatory intermediate factor operationalized through unemployment, financial assistance and trust.The results of the study indicate a positive connection between immigrants from EU/EFTA and the voter support for Sverigedemokraterna. A negative relation is identified between trust and the voter support for Sverigedemokraterna.
Olika fönster mot samma omvärld ? En undersökning av omvärldsbevakningen på Stockholms stadsbibliotek och Akademibokhandeln i Stockholm
The aim of this thesis is to explore how a bookstore chain and a public library meet the needs of their customers through environmental scanning. The empirical material is derived from six semi-structured interviews with six informants, three from each organization, together with an analysis of internal documents. The method used is a case study and the theoretical framework is based on models used in the process of environmental scanning, as described by Choo, Hamrefors and Hedin & Sandström among others, and which facilitate a comparison of the environmental scanning of the two organizations. The results of the study indicate that the library, as a public organization with a mission in society, perceives the environment as society as a whole and all its members as their users, whereas the bookstore concentrates on the sectors of the environment that affect their sales. The consequences of these different views are that the library is more active in the environment and uses surveys as a basic source of information, while the bookstore is more passive, and relies on statistics for information.
Pulveregenskapers inverkan på grönkropp med avseende på sprickor
This thesis is a survey and also an investigation of the different factors that affects the cracking that occurs in the inserts at AB Sandvik Coromants production in Gimo. The work that has been done has focused on two main factors, namely, powder characteristics and pressing parameters.AB Sandvik Coromant produces tools and tooling systems for metal cutting. They have some problems in their production of inserts. The problem is that cracks sometimes occur in the body of the insert, after it´s pressed. In order to investigate this, a preliminary study was made in which production principles were studied.
Metod för dosoptimering av digitalt detektorsystem i klinisk drift
The county of Dalarna is at present carrying through a process of digitalization where traditional x-ray film is being replaced with digital detectors. Earlier used methods for dose optimization turned out not being sufficient. This report presents a method to harmonize dose levels between x- ray sites equipped with Fujifilm imaging plate systems. An exposure index, S, related to the dose level of the examination is computed to every x-ray image. S turned out to be inversely proportional to the detector dose used at the examination.
Elevers attityder, kunskaper och beteenden : inom kunskapsområdet konsumtion och ekonomi i Hem- och konsumentkunskap
SammanfattningKonsumtion och ekonomi är områden som på olika sätt påverkar människors liv. Forskning visar att värderingar, identiteter och idéer grundas på konsumtion. Syftet med denna studie var att undersöka elevernas attityder, kunskaper och beteenden inom konsumtion och ekonomi som är ett kunskapsområde inom ämnet hem- och konsumentkunskap. Författaren var även intresserad av att undersöka om det fanns skillnader mellan två skolor bland elever i årskurs nio som skiljer sig åt vad gäller upptagningsområde och skolans geografiska läge. 153 enkäter delades ut och resultatet analyserades med dataprogrammet IBM Statistics Version 20 (SPSS 2010).
Myndigheter i förändring - En analys av organisationsförändringar i Skatteverket och Statistiska centralbyrån
The aim of this thesis is to study why Swedish authorities do organizational changes. Two organizations are analyzed; The Swedish Tax Agency (Skatteverket) and the National Statistics Office of Sweden (Statistiska centralbyrån). A qualitative method, consisting mainly of interviews with key officials, is employed to study two aspects of organizational change: first, the main reasons for changing the organization and, second, how the process that preceded the actual change was carried out. Furthermore, two different theoretical perspectives are used to construct a basis for the analysis. One of the perspectives assumes a social constructivist approach, while the other is rationalistic inspired.
Vilken ledarstil är önskvärd ur ett medarbetarperspektiv? : En kvantitativ studie om ledarstilar.
The purpose of this study was to examine the leadership style that is preferred by the employees from a psychosocial- and productive perspective. The study is based on Lewin et al´s research on the three leadership styles authoritarian, democratic and laissez-faire leader. This is a quantitative study with a questionnaires as data collection method. The sample consisted of individuals working in a municipality in one nursing unit. The data from the survey were analyzed by three separate one-way depending ANOVA in IBM statistics SPSS 22.