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Utredning i barnets bästa? En rättssäkerhetsstudie av utredningar av familjehem

Detta arbete behandlar medgivandeutredningen (senare benämnd utredningen) av familjehem ur ett rättssäkerhetsperspektiv. Utredningar av familjehem görs utifrån bestämmelser i Socialtjänstlagen (SoL) och det är denna lag som utgör grunden för utredningarna. I arbetet görs därför först en beskrivning och kort genomgång av vad som historiskt föregått den lagstiftning som resulterat i SoL och den ramlThe investigation of the foster home – a study of the rule of law and the best interest of the child This essay deals with the investigation of the foster home and the requirements that the Social Services Act (hereafter referred to as SoL) holds for this. The issue is dealt with in the perspective of the rule of law of the requirements in the investigation, and the best interest of the child. T

Towards Fully Dynamic Surface Illumination in Real-Time Rendering using Acceleration Data Structures

The improvements in GPU hardware, including hardware-accelerated ray tracing, and the push for fully dynamic realistic-looking video games, has been driving more research in the use of ray tracing in real-time applications. The work described in this thesis covers multiple aspects such as optimisations, adapting existing offline methods to real-time constraints, and adding effects which were hard

Lifting with simple gadgets and applications to circuit and proof complexity

We significantly strengthen and generalize the theorem lifting Nullstellensatz degree to monotone span program size by Pitassi and Robere (2018) so that it works for any gadget with high enough rank, in particular, for useful gadgets such as equality and greater-than. We apply our generalized theorem to solve three open problems: •We present the first result that demonstrates a separation in proof

KRW composition theorems via lifting

One of the major open problems in complexity theory is proving super-logarithmic lower bounds on the depth of circuits (i.e., mathrm{P} nsubseteq text{NC}{1}). Karchmer, Raz, and Wigderson [13] suggested to approach this problem by proving that depth complexity behaves'as expected' with respect to the composition of functions f diamond g. They showed that the validity of this conjecture would impl

Optimal, Low-Complexity Beamforming for Discrete Phase Reconfigurable Intelligent Surfaces

Reflective reconfigurable intelligent surface (RIS) technology is regarded as an innovative, cost- and power-effective solution that aims at influencing the wireless channel through controlled scattering. The technology can be realized by using metamaterials and/or resonant elements that scatter electromagnetic waves with a configurable phase shift. Most of the previous work on beamforming techniq

Massive MIMO goes Sub-GHz : Implementation and Experimental Exploration for LPWANs

Low-Power Wide-Area Networks operating in the unlicensed bands are being deployed to connect a rapidly growing number of Internet-of-Things devices. While the unlicensed sub-GHz band offers favorable propagation for long-range connections, measurements show that the energy consumption of the nodes is still mostly dominated by the wireless transmission affecting their autonomy. We investigate the p

Path Verification for Dynamic Indirect Illumination

In this paper we present a technique that improves rendering performance for real-time ith ray in the presence of dynamic lights and objects. In particular we verify photon paths from the previous frame against dynamic objects in the current frame, and show how most photon paths are still valid. When using area lights, we use a data structure to store light distribution that tracks light paths all

Characterizing the Small-Scale Fading for Low Altitude UAV Channels

In this contribution, a recently conducted measurement campaign in a suburban scenario for the Unmanned Aerial Vehicle (UAV) Air-to-Ground (A2G) radio channel is introduced.The downlink signals in an in-service Long Term Evolution (LTE) network were collected and utilized to extract the Channel Impulse Responses (CIRs). A high-resolution parameter estimation algorithm derived based on the Space-Al

Spatially-Coupled Serially Concatenated Codes with Periodic Convolutional Permutors

Spatially-coupled serially concatenated codes (SC-SCCS) are a class of turbo-like codes constructed by interconnecting a sequence of SCCS using a set of block permutors. At short block lengths, however, the bit-error-rate (BER) performance of SC-SCCS constructed by independent block permutors exhibits a high error floor. In this paper, we propose an alternative method for constructing SC-SCCS to m

Measured glomerular filtration rate does not improve prediction of mortality by cystatin C and creatinine

Background: Cystatin C may add explanatory power for associations with mortality in combination with other filtration markers, possibly indicating pathways other than glomerular filtration rate (GFR). However, this has not been firmly established since interpretation of associations independent of measured GFR (mGFR) is limited by potential multicollinearity between markers of GFR. The primary aim

Antithetic Sampling for Monte Carlo Differentiable Rendering

Stochastic sampling of light transport paths is key to Monte Carlo forward rendering, and previous studies have led to mature techniques capable of drawing high-contribution light paths in complex scenes. These sampling techniques have also been applied to differentiable rendering.In this paper, we demonstrate that path sampling techniques developed for forward rendering can become inefficient for

Have we agreed on that? : Collective values in Community Grassroots Innovations

Grassroots Innovations (GI) have became a successful mechanism developed by the associative capacity of people that seek to provide solutions to their own problems relying on the values of solidarity and reciprocity while striving for social transformation (Smith and Seyfang, 2007; Seyfang and Haxeltine, 2012). However, GI still endure three challenges, namely: adaptation vs. transformation, local

Ice out of Fire : Ice and cloud condensation nucleation of aerosol particles emitted from controlled soot generation and combustion of renewable fuels

Aerosol particles, small solid or liquid particles suspended in a gas, are found everywhere in the atmosphere. Air pollution from such particles, mainly soot from combustion-derived activity is a leading cause of premature deaths in the world and have a large effect on the climate. Aerosol particles can interact with climate-related processes in the atmosphere either directly by absorbing or refle

Natural marine aerosols : A study on atmospheric chemistry, new particle formation and particle growth

The role of natural marine aerosols in the global climate system remains understudied and uncertain. This is true for the emissions of natural volatile compounds over the ocean, the oxidation of said compounds and their impact on particle formation and particle growth. In this thesis, the emission, chemistry and aerosol particle processes relating to these compounds were studied using different pr

A Lyapunov Approach to Stochastic Interaction Dynamics Over Large-Scale Networks

We study stochastic interaction network models whereby a finite population of agents, identified with the nodes of a graph, update their states in response to pairwise interactions with their neighbors as well as spontaneous mutations. These include the main epidemic models, such as the Susceptible-Infected -Susceptible, the Susceptible-Infected-Recovered, and the Susceptible-Infected-Recovered-Su

Demystifying AMD SEV Performance Penalty for NFV Deployment

Network Function Virtualization (NFV) has shifted communication networks towards more adaptable software solutions, but this transition raises new security concerns, particularly in public cloud deployments. While Intel’s Software Guard Extensions (SGX) offers a potential remedy, it requires complex application adaptations. This paper investigates AMD’s Secure Encrypted Virtualization (SEV) as an