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Abstract This thesis work was performed at RUAG Space AB, Göteborg, Sweden. The aim of this thesis is to test the performance boundaries of SiGe based heterojunction bipolar transistor in designing a low noise amplifier meant for GNSS applications. After careful consideration of different alternatives for active components in SiGe HBT process, BFY640-04 from Infineon was selected as the active com
Having a specialized editor or IDE has become commonplace for many programming languages. Smaller languages, especially domain-specific ones that normally have very narrow usage areas, often lack such convenience features due to their naturally small user base. Tools for implementing editor support for these languages are called language workbenches. Unfortunately these often lack features for mor
Background: Health care reforms introducing patient choice have been gaining popularity during the last decades and several countries have implemented patient choice. The underlying principle of patient choice is anchored in the concept of the well-informed patient, an individual that knows what he or she is choosing between. Several information sources, related to choice of caregiver and treatmen
Abstract Author: Lisa Avenius Title: Suspicion that a child is being maltreated - a study of preschool teachers views on mandatory reporting The aim of this study was to get preschool-teachers views and experiences on previously researched areas surrounding the notification tendency regarding mandatory reporting. The mandatory report contains an obligation to immediately report suspected child mal
In today’s housing market, open house plans are requested increasingly. This puts a demand on the beams being used to manage longer spans and is therefore exposed to larger loads. To manage these larger loads, one solution is to increase the beam dimensions. Because of demands to fulfill standardized measurements for doors, ceiling heights and roofing heights, there is not always room for the beam
Människans bröd, fiskens död? Metaller förekommer naturligt i berggrund, jord och vatten. Varje ny metall som upptäckts har medfört nya möjligheter för människan och samhället. Mänsklig aktivitet medför att metaller som länge varit bundna till mineral får en ökad mobilitet. Metallhalten har därför ökat på vissa platser, särskilt vid industrier, vilket medför en ökning av metaller i våra kretsloppThere are around 80, 000 polluted areas in Sweden, of which 1, 000 are classified as very high-risk areas and in need of decontamination. From the Gullspångs Elektrokemiska Fabrik AB in Sweden there is a great risk of metals, aliphatic and molybdenum spreading to the Gullspångs River. The river is a Natura 2000-area and in the river the so called Gullspång salmon is found, which is protected. Her
Denna studiens syfte var att undersöka och försöka precisera vad för specifika egenskaper och förmågor hos en psykoterapeut som forskare och teoretiker hitintills har beskrivit vara eftersträvansvärda för att kunna ge en god terapeutisk effekt i psykoterapeutiska behandlingar. Syftet var också att i möjligaste mån skapa en tydlig översiktlig kartläggning och sammanfattning genom att samla ihop mycThe aim of this study was to investigate and try to specify what specific characteristics and abilities of a psychotherapist that researchers and theorists have so far described to be desirable in order to provide a good therapeutic effect in psychotherapeutic treatments. The aim was also to create, as far as possible, a clear overview and summary by collecting as much of material that is currentl
The thesis employs a number of tools originating from the field of Modern Portfolio Theory to assess the appropriate weight of Bitcoin in addition to several assets commonly found in the All-Weather Portfolio. Utilizing Sharpe Ratio optimization, the thesis compares two main portfolios to determine if the inclusion of Bitcoin can improve the performance and risk-return ratio of an optimized All We
The project emerged from a fascination of light and darkness. With developing technologies and more knowledge about the health aspects of light and darkness, the field of lighting is becoming more elaborate. Jun'ichirō Tanizaki once said “we find beauty not in the thing itself but in the patterns of shadows, the light and the darkness, that one thing against another creates”. I could not agr
The purpose of this study was to get a better understanding of how social workers at family centres perceive psychosocial support for new mothers and how social workers can contribute to a healthy transition to parenthood. To fulfil the purpose semi-structured individual interviews were conducted with four social workers working at family centres in different municipalities in Sweden. Bowlby’s att
Hängivelse tycks vara ett helt outforskat ämne. Denna studie var kanske först ut med att inom psykologisk forskning undersöka upplevelsen av hängivelse i stunden. Syftet med studien var att förstå hängivelse, vad som främjar den och vad som hindrar den. En kvalitativ ansats tillämpades och deltagarna, som alla hade kreativa yrken, intervjuades om sina upplevelser av att ge sig hän. Fyra intervjuer
Decisions taken in the boardroom are considered to be of crucial importance for corporate governance, not least due to their wide-ranging implications for both an organization and its stakeholders. To take effective decisions on the board, the availability of the right skills and knowledge is deemed essential. Such skills and knowledge largely derive from board members previous educational and fun
The aims of this study were to survey a sample of Swedish adults with self-reported ADHD and to investigate: 1) the extent of their reported impairments in social functioning and the relationship between these and the severity of their ADHD symptoms, comorbid symptoms of anxiety and depression, psychological flexibility and ADHD-specific quality of life (QoL); 2) investigate whether the participan
In this thesis we study the width of the Higgs boson in the process pp → t ̄t 4l at LO using MadGraph5_aMC@NLO to generate the events. The contributions including the Higgs signal, continuum background and interference were considered in order to calculate the expected number of events in a broad range of four-lepton invariant masses. Due to strongly enhanced off-shell contributions an upper bound
Examensarbetet fokuserar på utvärdering samt testning av FLEXNET, ett Unattended Ground Sensor (UGS) system utvecklat av Bertin Exensor. FLEXNET:s grund-läggande syfte är att övervaka stora områden utan att kräva omfattande resurser i form av personal som aktivt övervakar och underhåller systemet på plats. Vid utvecklandet av större system kan det ofta vara besvärligt att utföra fullskaliga testThe thesis focuses on the evaluation and testing of FLEXNET, an Unattended Ground Sensor (UGS) system developed by Bertin Exensor. The primary purpose of FLEXNET is to monitor large areas without requiring extensive resources in the form of personnel actively monitoring and maintaining the system on site. In the development of comprehensive systems it can often be challenging to carry out full-sc
Although online communities are numerous on social media platforms like Facebook, the communication strategies can be very different. The current research analyses a single case study and its online community. Sounders is an Italian start-up focused on creating a recognized and academic path for whoever wants to undertake a DJ career. Moreover, by sharing values such as sharing and willingness, So
The NEO model, developed by Lindström (2019) for paperboard, is a non-linear material model that utilizes empirically based constitutive relations with switches to mimic elastic-plastic responses. Due to the explicit definition of the constitutive relations, the NEO model does not require a constitutive equilibrium loop. This, in addition to modeling flexibility from the switches, poses the NEO mo
Internet and smartphones have made pornography easily accessible to young people. This study aimed to examine in which ways adolescents, teachers, and counselors think that watching pornography can have an impact on adolescents. The study also investigated whether viewing frequency and discussions about pornography during sex education lessons at school can influence youths' attitudes toward p
This study presents a geographic information system–based multiple criteria decision analysis (GIS-MCDA) with the analytic hierarchy process (AHP) for mapping forest fire risk zones in the Mediterranean region of Evros, Greece, which is close to Alexandroupoli city and two national parks extremely rich in biodiversity, National Park Dadias - Soufliou - Lefkimmis and Evros Delta. A pairwise compari
