This thesis is based on work done 1991-1996 using the DELPHI detector at LEP, and is summarized in four articles. It consists of four main parts. The first part describes the Very Small Angle Tagger (VSAT) and Small angle TIle Calorimeter (STIC), which are sub-detectors of DELPHI. The VSAT consists of four silicon-tungsten electromagnetic calorimeter modules, having silicon strip planes for accur

Popular Abstract in Swedish Med syftet att utvärdera tillämpbarheten av den ytvågsseismiska tekniken Spectral Analysis of Surface Waves (SASW), vilken används för bestämning av skjuvmodulen (Gmax), har fyra olika tillämpningsområden studerats. De fyra områdena har varit lokaler med naturliga jordförhållanden, lokaler där enbart icke-förstörande metoder normalt är möjliga att använda, test av vägbaWith the main aim to test the applicability of the surface wave seismic technique Spectral Analysis of Surface Waves (SASW), used for determination of the shear stiffness (shear modulus - Gmax), four areas of applications have been studied. The four areas have been sites with natural geological conditions, sites where non destructive testing is necessary, pavement testing and multichannel testing.

As average packet sizes in wireless networks shrink and data rates increase, the fundamental CSMA mechanism in the 802.11 protocol family is put under stress. With the emerg- ing 802.11ax standard, the carrier sensing mechanism is low- ering the efficiency of the protocol to the level of random access (ALOHA), and as future-generation 802.11 standards emerge, CSMA-based protocols will fall below t

Popular AbstractStudien är ett försök att analysera den sociala konstruktionen av "medievåld" i den svenska pressdebatten 1980-1995. Totalt analyserades 1029 artiklar ur sju av Sveriges största dags- och kvällstidningar. Många artiklar refererar till vetenskapliga "bevis" att våld i medierna föder faktisk aggression. En närmare analys av medieeffektforskningen avslöjar dock att det påstådda sambanThis study is an attempt to analyze the social construction of media violence in the Swedish press debate 1980-1995. Altogether, 1029 articles from seven of Sweden's biggest daily and evening papers were qualitatively analyzed. Numerous claims refer to scientific 'proof' that media violence breeds personal aggression. However, a critical examination of the media effects research reveal that the al

Del 1, "Skandinaviske engagementer 1945–1967": I et internationalt avantgardelogisk perspektiv kan man betragte det tyvende århundredes kultur i forhold til to klynger af “begivenheder”, en klassisk heroisk (høj)modernisme i kunstarterne fra begyndelsen af århundredet og en begyndende postmodernisme i både kunst og teori fra ca. 1970, der begge først blev navngivet og kortlagt senere. Den nordisk

Popular Abstract in Swedish Avhandlingen behandlar skolverksamheten i en svensk medelstor kommun under perioden 1996-2005 med fokus på de delar av verksamheten som handlar om stödåtgärder för elever med skolsvårigheter Syftet med studien är att undersöka skolans bedömning av elevers skolsvårigheter i ett längre perspektiv, och innefattar bl.a. elevers subjektiva upplevelser och konsekvenser i skoThis thesis examines school activity in a medium-sized Swedish municipality 1996?2005 focusing on the parts of the activity that deal with support measures for pupils with school difficulties. The purpose of the study is to examine the assessment of pupils? school difficulties in a longer perspective, considering pupils? subjective experiences and consequences of the school's organisation and wor

The gold-bracteates from the migration period are circular medallion like objects with a diameter of about 5 cm. The production began at approximately AD 450 and came to an end at about AD 550. Thus the bracteates were in use for a period of a hundred years. This dissertation focuses on the iconography of the so called C-bracteates. The motifs of the C-bracteates depicts a human head over four leg

We examined whether a high cortisol awakening response (CAR) and low cortisol decline over the day (CDD) are related to self-reported work stress and well-being, and whether there are gender differences in these relationships. Three hundred eighty-three working men and women responded to a survey measuring job stress factors, mastery at work, symptoms and well-being. Salivary cortisol was sampled

Popular Abstract in Swedish En europeisk köpoption ger innehavaren rätten, men inte skyldigheten, att köpa en underliggande tillgång till ett visst pris, lösenpriset, vid ett bestämt datum, lösendagen. En europeisk säljoption definieras på motsvarande sätt: den ger innehavaren rätten, men inte skyldigheten att sälja den underliggande tillgången. En teori för hur denna typ av finansiella kontrakt sThis thesis consists of three chapters devoted to both empirical and theoretical aspects of option pricing. The first chapter investigates the market for European options on the Swedish OMX index using daily data for the period 1993-2000. The assumption of constant volatility of the returns underlying the Black and Scholes option pricing formula is assessed by extracting the volatilities implied

Popular Abstract in Swedish Parkinsons sjukdom karaktäriseras av en progressiv degenerering av dopamin-producerande celler. Avsaknad av dopamin resulterar i kardinalsymptomen bradykinesi (långsamma rörelser), akinesi (avsaknad av rörelser), rigiditet (muskelstelhet) samt tremor (lågfrekventa darrningar i händerna, även kallad ”pillertrillar” rörelser). Den mest framgångsrika behandlingen består avThis study explores the role of transcriptional regulation important in the development of L-DOPA-induced dyskinesia in a rat model of Parkinson’s disease. In patients with Parkinson’s disease, dyskinesia is one of the most difficult complications of the DA-replacement therapy by L-DOPA. The underlying mechanisms are still unknown, but a role of abnormal striatal plasticity has been proposed. The