We investigate the problem of risk averse robot path planning using the deep reinforcement learning and distributionally robust optimization perspectives. Our problem formulation involves modelling the robot as a stochastic linear dynamical system, assuming that a collection of process noise samples is available. We cast the risk averse motion planning problem as a Markov decision process and prop

This thesis seeks to examine the suitability and robustness of transfer learning models in creating an efficient reCAPTCHA v2 classifier, and further evaluates their performance against various adversarial attacks. Three models - DenseNet201, EfficientNetV2, and InceptionV3 - were trained and assessed, highlighting the applicability of transfer learning techniques in the classification of reCAPTCH

We formulate a version of the low-scale Majoron model equipped with an inverse seesaw mechanism featuring lepton-number preserving dimension-6 operators in the scalar potential. Contrary to its dimension-4 counterpart, we find that the model can simultaneously provide light and ultralight Majorons, neutrino masses and their mixing, while featuring strong first-order cosmological phase transitions

Archetypes, as universal patterns or prototypes, are deeply ingrained in the collective consciousness and shape our expectations about the appearance, function, and meaning of objects. However, as products and their contexts change, it becomes necessary to find ways to break away from existing archetypal images. This thesis explores the development of archetypes, the boundaries of object categori

Background: Omission of prescheduled chemotherapy following surgery for gastric cancer is a frequent clinical problem. This study examined whether laparoscopic gastrectomy (LG) had a positive impact on compliance with adjuvant chemotherapy compared with open (OG). Methods: Patients with cT2-4aN0-3M0 adenocarcinoma treated with gastrectomy and perioperative chemotherapy between 2015 and 2020 were i

Introduction and hypothesis: The aim of this study was to explore if antibiotic prophylaxis prevents postoperative infection after a posterior colporrhaphy. Methods: In this register-based nationwide cohort study data were collected from the “The Swedish National Quality Register of Gynecological Surgery” (GynOp). Women 18 years or older who underwent a primary posterior colporrhaphy between 1 Jan

“Upper tail knowledge”, embodied by knowledge elites, has been suggested to be a driving force of industrialization and development, yet measuring it remains problematic. Despite some recent innovations, much empirical work continues to rely on measures of “average” or “non-upper tail” human capital such as literacy and years of schooling. We thus turn to perhaps unique sources from Denmark and No

Dimensionality reduction is an Exploratory Data Analysis (EDA) approach allowing for fast visualization of high-dimensional data and the possibility of discovering hidden systematic patterns within a data set. While linear dimensionality reduction techniques, such as Principal Component Analysis (PCA), are considered the golden standard in many areas of data science, they seem to be inadequate for

Bakgrund: Flera kirurgiska ingrepp genomförs elektivt, därmed ställs högre krav på den preoperativa informationen då patienter i vissa fall går hem samma dag och förväntas klara den postoperativa återhämtningen på egen hand. Den preoperativa informationen behöver vara lättbegriplig och tillgänglig, med möjlighet till preoperativt möte för förtydligande och tillfälle för att besvara frågor. Syfte

Introduktionstext till utställning på Gustavianum - Uppsala universitetsmuseum

Context. A large sample of long-period giant planets has been discovered thanks to long-term radial velocity surveys, but only a few dozen of these planets have a precise radius measurement. Transiting gas giants are crucial targets for the study of atmospheric composition across a wide range of equilibrium temperatures and, more importantly, for shedding light on the formation and evolution of pl

In this paper we study a variation of the random κ-SAT problem, called polarised random κ-SAT, which contains both the classical random κ-SAT model and the random version of monotone κ-SAT another well-known NP-complete version of SAT. In this model there is a polarisation parameter p, and in half of the clauses each variable occurs negated with probability p and pure otherwise, while in the other

The production of prompt Λc+ baryons has been measured at midrapidity in the transverse momentum interval 0

In a time when protectionism is re-emerging as a strong policy stance on a global scale, the opposition to cross mergers based on public interest grounds may once more become more frequent. The lack of a common policy at the EU level leaves each Member State free to set its own framework to oppose mergers based on the public interest. However, such frameworks need to comply with Article 4(1)(b) of

Mucosal human papillomavirus (HPV) subtypes 16 and 18 are causative agents of cervical cancer, a leading cause of cancer-related deaths among women worldwide. In Japan, eggplant calyx is a folk remedy used to treat common warts. 9-oxo-(10E,12E)-octadecadienoic acid, isolated from eggplant calyx, may have antitumor effects. This study investigated the antitumor effects of 9-oxo-(10E, 12Z)-octadecad

Common operational pictures (COPs) can be seen as collective problem representations that facilitate effective problem solving during emergency response. This article investigates how problems are represented in COPs and discusses how such problem representations could be improved to better inform ongoing response operations. A content analysis of 41 COPs created by a Swedish county board during t

Background: Opioid-related overdose deaths remain a common cause of death in many settings, and opioid maintenance treatment is evidence-based for the treatment of opioid use disorders. However, access to such treatment varies and is limited in many settings. Methods: The present study examines the longitudinal effects of a regional patient choice reform which substantially increased availability

The electroweak production of Z(νν¯) γ in association with two jets is studied in a regime with a photon of high transverse momentum above 150 GeV using proton–proton collisions at a centre-of-mass energy of 13 TeV at the Large Hadron Collider. The analysis uses a data sample with an integrated luminosity of 139 fb−1 collected by the ATLAS detector during the 2015–2018 LHC data-taking period. This