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1836 Uppsatser om Decision trees - Sida 5 av 123

Leaf area index in Vittelaria Paradoxa parklands in Burkina Faso estimated by light interception and leaf sampling

Burkina Faso as well as most sub-Saharan African countries struggle with providing food for a fast growing population. The dominating farming system is agroforestry parklands. Agroforestry parklands can broadly be defined as areas where scattered trees occur on farmlands as a result of selective clearing. The presence of trees in crop fields may in the long term have a positive effect on the production of annual crops. It is commonly discussed, but not proven, that the presence of trees leads to increased groundwater recharge due to higher infiltration capacity of the soil.

Sjuksköterskors beslutsfattande i akuta situationer - En litteraturstudie

Background: Every patient and each situation is unique. Therefore the nurse has to act in a flexible intervention and still keep an ethical perspective. Aim: The aim of this studie was to illuminate nurses? different aspects of decision making in emergency situations. Method: The result is based on nine scientific articles.

Nya träd för stadsmiljö

Trees in urban environment are exposed to extreme conditions, foremost the ones that grow in the hard packed soil along our streets. They are also exposed to damaging insects and fungal diseases both local and new ones spreading from South Europe. The global warming with warmer temperatures provides a longer growing season, making it easier for insects and fungus to establish a habitat. Based on these facts new tree species need to be available for future urban plantings.To determine what these trees would be an interview study began. Six people were selected who have experience in the field of urban environment planting.

Regler är till för att brytas

A purchase decision can be seen as a multifaceted context that raises many unanswered questions. Understanding the consumer's evaluation of alternatives is complex and should be studied at a deeper rather than wider scale. There is a problem for retailers to understand how the consumer manages a purchase decision in a retail setting with durables goods that generates a higher effort. The aim is to describe the decision rules used by the consumer and how they are expressed in this context. A better understanding of which ones they use and how they are conveyed will help retailers to create effective marketing solutions that generate positive outcomes as increased profitability and customer satisfaction.

Skogsbränsledrivare i klen förstagallring med contorta

The aim for the study was to examine a harwarder´s (combined harvester-forwarder) productivity when harvesting forest fuel in first thinning stands that contains Lodgepole pine and calculate the economy of the harvesting work and estimate the quality of the thinning . The field study area where located near Arvån, about 15 kilometres south ?east from the city of Lycksele. The field studies were taken place in three different stands. All tree stands had the same tree age, but the tree species combination and the density varied.

Vetlandas gatuträd : analys av trädens upplevelsekvalitéer

Street trees have had a prominent role in Vetlandas history from the turn of the century up to present day. Many trees have unfortunately been taken away through the ages, but most of them luckily remains and most of the streets in central Vetlanda are still tree lined. The comprehensive inventory that has been made shows that lime is the dominant species in Vetlanda with no less than 62 %. The age division is quite even with one peak at the turn of the century, one during the ?60s and another during the ?90s.

Fodder to ruminants within agroforestry systems in Rwanda - species and management

Rwanda is one of the poorest countries in the world and about 70-80 % of the population lives in rural areas. The land is strongly affected by land erosion which makes it difficult for the agriculture and food production. Agroforestry is a system where tree plantation is combined with livestock- and crop production. The system provides soil fertilization and binds the soil together. Some of the trees used in agroforestry systems are also used as fodder.

Remittera till akutmottagningen eller inte? : Sjuksköterskors uppfattning av beslutsfattandet på vård- och omsorgsboende.

Background: High demands are today placed upon Swedish elderly care nurses as more elderly live with multimorbidity while the hospital bed capacity is becoming lower. Aim: The aim of the study was to explore nurses? perception of decision-making in situations with acutely ill patients in nursing homes and which factors may influence the decision about transferring patients to the emergency department or not. Method: This is a qualitative study with a phenomenographic approach. Semi-structured interviews have been conducted with 11 nurses working in nursing homes. The data analysis was based on Dahlgren and Fallsberg (1991) data analysis. Result: Three different description categories were presented, which describes variations of the nurses? perceptions.Feeling comfortable in making the decision; which involved the nurses feeling confident in the decision-making about transferring patients to the emergency department or not.Hesitant in making the decision; which described how nurses perceived the decision-making as problematic, with regard to transferring patients to the emergency department.Many wishes to consider in taking the decision; which explained how nurses? decision-making was influenced by requests from the patients or from people close to them.Conclusion:  The study reflected how  supporting and aggravating factors could influence how nurses in nursing homes perceived the decision-making and how nurses have to take in consideration different opinions concerning the decision making process of transferring patients to the emergency department or not.

Trädföryngring i låga gropar uppkomna vid brand i boreal naturskog :

This study was conducted in the "Kåtaberget" forest reserve in Västerbotten in the summer of 1999. In the summer of 1995, a prescribed burning was performed in the reserve. In some places where coarse dry woody debris (logs and stumps) was present, the fire consumed the wood, as well as parts of the humus layer, creating deep-burned patches. The low intensity ground fire also created dead woody debris by burning off living trees with open fire scars, as well as standing dead trees. In this study, the post-fire tree seedling establishment was examined, with special attention given to the former presence of woody debris. The study also includes a survey of the areal extent of deep-burned patches, as well as an examination of tree seedling establishment in these patches, compared to other burnt ground.

Urvalsdesign för SCB:s undersökning av föetagens ekonomi

Tree fiber lengths controls properties like strength and smoothness in paper and other wood products. For forest researchers it is of interest to be able to determine the fiber lengths in standing trees. Mo?rling et al. (2003), among others, have developed methods to estimate fiber length distributions in standing trees without damaging them.

Om matematikundervisningens svåra konst. Ett sätt att undervisa abstrakt bevisföring

Tree fiber lengths controls properties like strength and smoothness in paper and other wood products. For forest researchers it is of interest to be able to determine the fiber lengths in standing trees. Mo?rling et al. (2003), among others, have developed methods to estimate fiber length distributions in standing trees without damaging them.

Vedrötor i stadsträd : biologi, detektionsmetoder och förebyggande åtgärder

Urban trees have very little in common with trees on natural sites, such as forests or pastures. Trees in urban environments are often planted in packed soil and in small volumes. This can lead to decreased availability of water and oxygen, as well as deteriorated ability for the soil to store nutritional elements. Also above ground the tree usually have limited space in cities. Regulations on free height over roads and cycle tracks demands high stems at an early stage of their development.

Flygburen laserskanning kopplat till skördarmätning för datainsamling till operativ planering :

The requirements for operative planning activities are increasing. The forest industry wants to gain better control over wood flow. A felling that is more market adjusted is desirable. However, this causes problems in the operative planning process because of the data collection methods used today. Data about timber assortments and data about the distribution of the tree diameter, etc., are often lacking. Airborne laser scanning is used to a greater extent than before for estimation of forest variables and should perhaps be used to the same extent in operative planning activities as well.

Analys av fiberlängdsfördelning hos gran (Picea Abies) och tall (Pinus Sylvestris)

Tree fiber lengths controls properties like strength and smoothness in paper and other wood products. For forest researchers it is of interest to be able to determine the fiber lengths in standing trees. Mo?rling et al. (2003), among others, have developed methods to estimate fiber length distributions in standing trees without damaging them.

Flygvapnets Transformation : Fallstudie i flygutbildningens omtvistade placering

The transformation among armed forces in Europe is a consequence due to shifted security perspective and the growth of international security actors, such as NATO and the EU. Sweden has played an active role in EU to ensure its influence in forming the security policy for the organisation. Some studies mean it´s because of Sweden?s interest in strengthen EUs roll as a security actor they transformed their own armed forces to be able to take part in international operations. This transformation led to what can be called ?the Swedish defence dismantle? and some studies mean that it has led to the point where Sweden completely lacks the ability to defence themselves.The question is if the ambition to become an active member in these security organisations can explain all the decisions made throughout the Swedish defence-transformation, or if some decisions were made due to other factors?By studying the decision process leading up to the decision to locate the flight education to Malmen in Linköping this study seeks to answer why the decision was made.

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