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1161 Uppsatser om Road safety - Sida 5 av 78
Planering av vägupprustning med hjälp av GIS och optimering : en fallstudie på Holmen Skog
The objective of this thesis was to develop a method for the planning of road upgrading at Holmen Skog, a Swedish forest company. A critical issue for creating such plans is to identify roads that are suitable to upgrade to a standard that can handle heavy traffic during spring thaw, since spring thaw is a bottle neck for transporting timber. The method was tested in a case study at a district.
The work consisted of two parts. The first was to retrieve and prepare geographical data for the roads.
Metodik för detektering av vägåtgärder via tillståndsdata
The Swedish Transport Administration has, and manages, a database containing information of the status of road condition on all paved and governmental operated Swedish roads. The purpose of the database is to support the Pavement Management System (PMS). The PMS is used to identify sections of roads where there is a need for treatment, how to allocate resources and to get a general picture of the state of the road network condition. All major treatments should be reported which has not always been done.The road condition is measured using a number of indicators on e.g. the roads unevenness.
Mjukvaruplattform för riggstyrning
Today the competition in the automobile industry is getting all tougher. The technology behind cars becomes more advanced. To get ahead of competitors car companies has to look into new areas of innovation.One important area is vehicle safety. Bigger companies have come so far in vehicle safety that difference between cars more depends on the car type (size) than the technology behind it.There is one area where vehicle safety that still has great opportunities for improvement, which is in active safety. The term active safety states that the car has the ability to identify treats and automatically respond to the treats.
Strategisk/taktisk vägplan :
The purpose of this thesis was to create a strategic/tactical road access plan. This was done by designing an analytical method which gives the road manager a template to create long-term road access plans. The analytical method will help to identify and appraise roads to be upgraded and give information when it is time for building new roads.
The study method involved developing an analytical method. The method was comprised of five main parts: the harvest plan, analysis of the road network, transport costs, quality and storage costs and finally, identification of investment alternatives.
Säkerhetsklassificering av dammar : En kartläggning av system i Sverige, Norge, Finland, Schweiz, Kanada och USA
In a comparing survey this thesis investigatesclassification systems for dams in Sweden, Norway,Finland, Switzerland, Canada and USA. Theinvestigation is aiming at an understanding of howpotential consequences of a dam failure are takeninto account when classifying dams. Furthermore,the significance of the classification, regarding therequirements on the dam owner and surveillanceauthorities concerning dam safety is considered andreviewed. The thesis is pointing out similarities anddifferences in the line of dam safety.The survey of dam safety is firstly based upon legalrequirements in the different countries andsecondly on guidelines regarding dam safety. Damowners generally are ultimately responsible for thesafety of their dam, and often have their ownroutines regarding how this safety is to be achieved.In this thesis, however, the legal requirements aremainly focused upon.The investigation has resulted in an outlining ofeight areas, where the classification systems in thevarious countries have been compared.
Det elliptiska säkerhetsområdets robusthet : hur robust är metoden med de elliptiska säkerhetsområdena förett symmetriskt men icke normalfördelat datamaterial?
Quality Control is a term often used within production and is referring to managing processes so they produce capable products. Within Quality Control, process capability index is a common measure to oversee processes. Safety Region Plots were introduced to do this graphically. In Albing & Vännman (2010) the concept of Safety Region Plots is expanded to incorporate an elliptical shape. The method of Elliptical Safety Region Plots assumes a normally distributed data.
Förekomsten av systematiskt säkerhetsarbete och riskhantering i skolan : En studie av respektive utbildningsplaner för lärare och rektorer
AbstractThe Swedish school is the biggest place of work in the country. Statistics about the Swedish school shows that both students and teachers work in an environment who has elements of violations, threats and violence, and study environments where many students do not feel they have a study environment during class. The purpose with this study has been to investigate if teachers and principals is given the right conditions in their respective educations to pursue their professional profession to achieve the objectives of the goals with the systematic safety and work environment of the school's safety concerns. The study has been designed as an investigation about respective educations syllabus and has been examined by the presence about systematic safety and knowledge about work environment law in respective courses. The examination about respective educations syllabus has been done by a qualitative content analysis.
Upphandling av vinterväghållning
This report was undertaken at the request of the Management and maintenance department of Swedish National Road Authority (Vägverket Region Sydöst) in Jönköping.In 1992, the management and maintenance of Swedish roads were laid out on external constructors. When putting out a tender for the work, the foundation is from a national set of rules which are in constant change. This report is limited to winter road upkeep.The trend in the invitation for tenders is that it is moving from the more conventional executional demands towards the less controlling demands. The downside of functional, less controlling demands is that it is difficult to articulate how to measure them. The order authority therefore has to find ways to make sure to get what has been paid for.In connection to the invitation for tender of winter road upkeep for 2005, the new set of rules, ATB Vinter 2003 was deployed.The main purpose of this thesis is to see which the big changes in the set of rules are and how these changes affect the organisation and activities of the constructor.It is also studied how the changes in execution is perceived by road users and how it affects the possibilities of the constructor to come as a newcomer to a new area of administration.Interviews and examination of sets of rules has led to a list of a number of changes that the constructors feel affect their work in any sense.Views from road users that have come in to the order authority have been scrutinized to see how they have experienced the change.
Psykosocial arbetsmiljö och säkerhetsklimat: en explorativ studie på mindre flygplatser i Sverige
The aim of this paper is to examine the psychosocial work environment and safety culture in minor Swedish airports. The purpose is also to investigate the relationships between these two. The paper deals with theories regarding psychosocial work environment, organizational culture and safety as well as safety culture and safety climate. The participants are air traffic controllers working in minor airports in Sweden. The psychosocial work environment was measured with Copenhagen psychosocial questionnaire (COPSOQ) and the safety culture with the safety culture assessment questionnaire (SCAQ).
Barnsäkerhet på förskolan : en kvalitativ jämförelsestudie
The purpose of the present study has been to investigate the attitudes of personell involved in the preschoolorganisation in a Swedish commune regarding injury risks for children in pre-school. Sixrespondents were interviewed in a qualitative interview study.Two different pre-school units were investigated, and it was found that they had surprisingly largedifferences in how they were working with children safety. However, in summary it can be said that therespondents perceived that child safety should encompass a safe and secure environment, however withthe important caveat that accidents can never be completely excluded, due to the natural anddevelopmentally important play of children.The investigated commune and pre-school units improved children safety mainly by using yearlyplanning meetings (Sw. "barnskyddsrond") where the physical environment in the school wasinvestigated together with external specialists. However, there are important differences in how the unitsworked within this framework, some units actively encouraging and others discouraging children andparent participation in the work..
Produktivitet och kvalitet vid stickvägs- respektive beståndsgående förstagallring :
Nowadays the majority of the thinnings made in Swedish forests are done by machines, harvesters and forwarders. The most common model in thinning with a harvester is strip-road operated thinning and stand-operated thinning with one intermediate passage between the strip-roads. This study is a time study with some quality follow ups on a strip-road operated thinning model, a stand-operated thinning model with one intermediate passage between the strip-roads and a stand-operated thinning model with two intermediate passages between the strip-roads. The machines in the study were a small harvester (Forestline MPM C90) and a medium sized forwarder (Timberjack 1110).
The study was made in Litsnäset outside the city of Östersund in Sweden and was made during the autumn 2007. In a lodgepole pine stand six study units (0,6 ha) were thinned with the three different models, two study units per model.
Jämförelse av beräknad och verklig grundvattensänkning vid vägportar
Present master of science thesis has been carried out at the Swedish Road Administration consulting services (Vägverket Konsult) in Karlstad. The purpose of the study is to investigate how well the calculated drawdown of the groundwater table predicts the actual drawdown when the road and railway gates at the studied sites are built. For this purpose the groundwater levels at the three bridges were measured during 6 months. The bridges in question are two railway bridges situated in Ölme and Ulvåker and one road bridge crossing a pedestrian and cycling path in Lidköping.In Ölme the calculated area of influence was smaller than the measured one. It differed up to 30 meters, i.e.
Handlingsplan för rening av dagvatten från hårt trafikerade gator i Örebro
The main purpose with the project has been to approximate the magnitude of the pollution transport from the actual road surfaces and to get an approximation of the possibility to collect the pollutants to reduce the load to the water and improve the water quality.The quantity of pollution transport from the most trafficated roads areas in Örebro city has been calculated. Roads whith a traffic exceeding 10 000 vehicle/day. The study has been done with the calculation tool StormTac. Through analysis of traffic loads and road surface, which together with a different kinds of parameters gives an approximation of the pollutant transport.The calculation has included some metals and other substances in the stormwater and has also included the present of suspended solids. Included the overall study, some smaller areas has also been calculated for the possibility to remove pollutants.The work also includes calculation for three different areas for stormwater treatment.
Upphandling av vinterväghållning
AbstractThis report was undertaken at the request of the Management and maintenancedepartment of Swedish National Road Authority (Vägverket Region Sydöst) inJönköping.In 1992, the management and maintenance of Swedish roads were laid out onexternal contractors. When putting out a tender for the work, the foundation isfrom a national set of rules which are in constant change. This report is limited towinter road upkeep.The trend in the invitation for tenders is that it is moving from the moreconventional executional demands towards the less controlling demands. Thedownside of functional, less controlling demands is that it is difficult to articulatehow to measure them. The order authority therefore has to find ways to makesure to get what has been paid for.In connection to the invitation for tender of winter road upkeep for 2005, the newset of rules, ATB Vinter 2003 was deployed.The main purpose of this thesis is to see which the big changes in the set of rulesare and how these changes affect the organisation and activities of the contractor.It is also studied how the changes in execution is perceived by road users and howit affects the possibilities of the contractor to come as a newcomer to a new areaof administration.Interviews and examination of sets of rules has led to a list of a number ofchanges that the contractors feel affect their work in any sense.Views from road users that have come in to the order authority have beenscrutinized to see how they have experienced the change.
Seeking Safety som behandling vid PTSD : En single case studie i psykiatrisk öppenvård
Denna single case studie, med multipel baslinjemätning över beteenden, utvärderade huruvida frekvensen traumarelaterade undvikandebeteenden minskade vid 12 sessioners behandling under 6 veckor med Seeking Safety (en behandlingsmanual med copingstrategier för PTSD och samtidigt missbruk), hos patienter med PTSD som inte bedömts lämpliga/redo att direkt börja traumafokuserad KBT. Därutöver utvärderades huruvida behandling med Seeking Safety, kunde öka villigheten att genomgå traumafokuserad KBT. 4 patienter deltog i studien varav 3 fullföljde behandlingen. Resultaten visade en svag tendens i riktning med hypoteserna, men studiens resultat i sin helhet ger ej stöd för behandlingens effekt hos patientgruppen. Av denna studie går ej att utläsa huruvida behandling med Seeking Safety kan leda till minskning av traumarelaterade undvikande-beteenden..