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The Paradoxical Darknet : An Ethnographic Study of Community and Social Control on Cryptoforums

Darknet framställs ofta som en digital värld präglad av avvikelse och kriminalitet – en plats där ”allt är tillåtet” och som därför anses kräva övervakning och kontroll. Trots detta är kryptoforum fortfarande relativt understuderade. Med utgångspunkt i tre års etnografiskt fältarbete ger denna avhandling nya insikter i de interna dynamikerna i en till stor del dold onlinegemenskap. Genom att kombiThe Darknet is often portrayed as an online realm marked by deviance and criminality – a space where “anything goes” and therefore requires policing. Yet its cryptoforums remain comparatively understudied. Drawing on three years of ethnographic fieldwork, this dissertation provides new insights into the internal dynamics of a largely hidden online community. Combining digital observations with 19

Analysis of the exit flow angle and characteristics of flow in axial turbine cascades

Despite a wealth of sophisticated CFD-methods, most designs are still based on one-dimensional and two-dimensional inviscid analytical tools. In such methods, realistic loss and angle assessment are indeed critical in order to arrive at correct loading, flow coefficient and reaction. The selected values are normally retained through the detailed design sequence for each iteration. This means that

Crowd control and spatial distribution : the case of Swedish student housing

In this article, we use a crowd theoretical perspective to look at student crowds and how they have been managed through various subdivisions of student housing. How has the student cohort been territorialised and divided into entities according to differences in group sizes, gender, family constellations, etc., and how has housing played a role in these social differentiations? Using the history

Parchment: demand and supply in medieval Scandinavia

In medieval Scandinavia, parchment was a crucial writing material for everything from property deeds and judicial matters to religious works and account keeping. As society became more and more invested in literacy, the demand for parchment grew. However, the supply of animals for parchment could not increase to the same extent without great changes in animal husbandry. This thesis explores how me

Large eddy simulation of flat plate film cooling at high blowing ratio using open FOAM

In this work, numerical analysis was performed to predict the behaviour of high Reynolds number turbulent cross-flows used in film cooling applications. The geometry included one row of three discrete coolant holes inclined at 30 degrees to the main flow. In the computational model, the width of the channel was cut into one sixth and symmetry boundaries were applied in the centreline of the coolan

Pollinator and floral odor specificity among four synchronopatric species of Ceropegia (Apocynaceae) suggests ethological isolation that prevents reproductive interference

Possession of flowers that trap fly pollinators is a conservative trait within the genus Ceropegia, in which pollination systems can be generalized or highly specialized. However, little is known about the role of plant–pollinator interactions in the maintenance of species boundaries. This study examined the degree of plant–pollinator specialization and identified the parameters responsible for sp

Influence of scarification method on seed germination of the terrestrial orchid Anacamptis laxiflora (Lam.)

A critical step during in vitro sexual propagation of terrestrial orchids is the treatment of the microscopic seeds with a disinfecting solution that kills bacteria and fungi attached to the seeds. This treatment is necessary to prevent infection of the culture vessels. At the same time, the treatment serves to scarify the seeds, a process that disrupts seed dormancy and initiates germination. The

Effects of multi-blocking and axial gap distance on performance of partial admission turbines : a numerical analysis

In this paper, the effects of axial gap distance between the first stage stator and rotor blades and multiblocking on aerodynamics and performance of partial admission turbines are analyzed numerically. The selected test case is a two stage axial steam turbine with low reaction blades operating with compressed air. The multiblocking effect is studied by blocking the inlet annulus of the turbine in

A roadmap to key traits of invasive Drosophilidae

ABSTRACT Biological invasions have intensified in recent decades, mostly driven by international trade and travel, raising significant concerns, particularly regarding insect pests. Once non-native species establish, they can disrupt natural ecosystem stability, undermine agroecosystem sustainability and cause substantial economic losses. The urgency to anticipate these socio-economic impacts has

Locating close-range radar reflections measured using time-varying clock offsets

Many forms of small-size radars suffer from minor clock oscillations due to crystalline impurities in their internal clocks, causing time-varying clock offsets between the transmitter and the receivers. This offset causes a bias and an increased variance in the positioning of close-range targets, limiting the achievable accuracy well beyond the expected estimation limitations. Furthermore, an appr

Numerical analysis of partial admission in axial turbines

HTML clipboard Numerical analysis of partial admission in axial turbines is performed in this work. Geometrical details of an existing two stage turbine facility with low reaction blades is used for this purpose. For validation of the numerical results, experimental measurements of one partial admission configuration at design point was used. The partial admission turbine with single blockage had

Search for Quasiparticle Scattering in the Quark-Gluon Plasma with Jet Splittings in pp and Pb-Pb Collisions at sNN =5.02 TeV

The ALICE Collaboration reports measurements of the large relative transverse momentum (kT) component of jet substructure in pp and Pb-Pb collisions at center-of-mass energy per nucleon pair sNN=5.02 TeV. Enhancement in the yield of such large-kT emissions in head-on Pb-Pb collisions is predicted to arise from partonic scattering with quasiparticles of the quark-gluon plasma. The analysis utilizes

A preliminary version of a computerized naming test for preschool children with language impairment

The most prevailing hypothesis regarding mechanisms behind specific language impairment today is the hypothesis of general limitations of processing capacity. Such an hypothesis can hardly be tested by available language assessment tools, especially not by instruments in use for clinical assessment of the lexical-semantic domain in children. Reduced naming speed is by some researchers considered a

Growth, structure, and morphology of ultra-thin tin oxide phases forming on Pt3Sn(111) single crystals upon exposure to oxygen

Here we report an investigation of ultrathin tin oxide films on Pt3Sn(111) using low-energy electron microscopy (LEEM), microspot low-energy electron diffraction (μ-LEED), scanning tunneling microscopy (STM), surface X-ray diffraction (SXRD), and high-resolution X-ray photoelectron spectroscopy (XPS). Oxidation at ∼390–410 °C produces triangular, two-dimensional oxide islands that nucleate rapidly

Host tree preference and performance of the Eurasian spruce bark beetle (Ips typographus) on Scots pine

BACKGROUNDThe Eurasian spruce bark beetle, Ips typographus, is one of the most serious pests of Norway spruce (NS, Picea abies), with the ability to infest and kill vigorous trees through pheromone-mediated mass attacks. During outbreaks, I. typographus has been observed to occasionally attack Scots pine (SP, Pinus sylvestris). We investigated in the laboratory whether I. typographus is attracted

A methodology for assessing the effect of localizer orientation on the consistency of tube current modulation in CT

Localizer orientation can significantly impact the automatic tube-current modulation (ATCM) in computed tomography (CT). The purpose of this study was to introduce a methodology for assessing ATCM consistency and to compare the outcomes in image noise and radiation dose between a single anterior–posterior (AP) localizer and a combination of lateral and AP (LAT + AP) localizers. A total of 299 pros