Sökresultat

Filtyp

Din sökning på "*" gav 534430 sökträffar

Principles of Insect Path Integration

Continuously monitoring its position in space relative to a goal is one of the most essential tasks for an animal that moves through its environment. Species as diverse as rats, bees, and crabs achieve this by integrating all changes of direction with the distance covered during their foraging trips, a process called path integration. They generate an estimate of their current position relative to

The Dung Beetle Compass

What do a burly rower, a backstroke swimmer and a hard-working South African dung beetle all have in common? The answer is: they all benefit from moving along a straight path, and do so moving backwards. This, however, is where the similarity ends. While the rower has solved this navigational challenge by handing the task of steering to the coxswain, who faces the direction of travel, and the swim

Accurate and Efficient Evaluation of Characteristic Modes

A new method to improve the accuracy and efficiency of characteristic mode (CM) decomposition for perfectly conducting bodies is presented. The method uses the expansion of the Green dyadic in spherical vector waves. This expansion is utilized in the method of moments (MoM) solution of the electric field integral equation (EFIE) to factorize the real part of the impedance matrix. The factorization

Coming out of the Gaming Closet : Engaged Cultural Analysis and the Life-Line as Interview Method and Consciousness-Raiser

This article accounts for and problematizes the process and development with the research tool and method, “the Life-Line”, which we used in our project Gaming Moms. Juggling Time, Play and Everyday Life (Enevold & Hagström 2008a) to involve our informants in the production, outcome and consumption of research beyond merely being respondents to interview-questions. We propose to call the colla

Primary and secondary diagnoses of gambling disorder and psychiatric comorbidity in the Swedish health care system-A nationwide register study

Background: Psychiatric comorbidity is common in gambling disorder, a condition with low rates of treatment seeking. There is a paucity of documented nationwide data on gambling disorder and its co-occurring psychiatric comorbidities in the health care system. Methods: This is a nationwide register-based study of all patients aged above 18 years who were diagnosed with gambling disorder (correspon

Applying the SDGs to cities : Business as usual or a new dawn?

With growing urbanisation the sustainability of cities has become increasingly important. Although cities have been using indicators for a long time it is only in the last decades that attempts have been made to collate indicators into sets that reflect the many different aspects required to assess the sustainability of a city. The aim of this paper is to review the evolution of indicators for mon

Predictors of Bank Distress : The 1907 Crisis in Sweden

This paper contributes to literature on bank distress using the Swedish experience of the in- ternational crisis of 1907, often paralleled with 2008. By employing previously unanalyzed bank-level data, we use logit regressions and principal component analysis to measure the im- pact of pre-crisis bank characteristics on the probability of their subsequent distress. The crisis was characterized by

Wages, income distribution and economic growth in Scandinavia

Wage restraint plays an important role in the conventional economic history explanation of the post-war golden growth experience of industrialized economies. Conversely, wage increases harming investment and increasing unemployment have been proffered as explanations for some of the high unemployment during the interwar period. This article argues that the conventional account implicitly only cons

What do doctors mean when they talk about teamwork? : Possible implications for interprofessional care

The concept of teamwork has been associated with improved patient safety, more effective care and a better work environment. However, the academic literature on teamwork is pluralistic, and there are reports on discrepancies between theory and practice. Furthermore, healthcare professionals’ direct conceptualizations of teamwork are sometimes missing in the research.In this study, we examine docto

A Workers’ Revolution in Sweden? Exploring Economic Growth and Distributional Change with Detailed Data on Construction Workers’ Wages, 1831–1900

The impact of the transition to modern economic growth on the distribution of income is widely debated. The experience of early industrializers like Britain and the US has informed much of the debate, lending support to the idea embedded in the models of Kuznets and Lewis that real wages of laborers tend to lag behind the growth of GDP per capita in the early stages of economic development. We exa

Anastomotic Strictures after Esophageal Atresia Repair : Timing of Dilatation during the First Two Postoperative Years

Background We determined time frames for dilatation of anastomotic strictures (ASs) occurring during the first 2 years after esophageal atresia (EA) repair. Methods A retrospective study was conducted on children with EA (Gross type C) who underwent direct repair between January 2008 and March 2015 at a single tertiary center of pediatric surgery. Endoscopic signs of stricture were indications for

Congenital Heart Disease and Its Impact on the Development of Anastomotic Strictures after Reconstruction of Esophageal Atresia

Background: The aim was to explore if severe congenital heart disease (CHD) influenced the need for dilatation of anastomotic strictures (AS) after the repair of esophageal atresia (EA).Methods: A retrospective case-control study was conducted examining AS in children with EA and Gross type C. The spectra of CHD and cardiac interventions were reviewed. The frequency of dilatations of AS during the

Treatment and Outcome for Children with Esophageal Atresia from a Gender Perspective

Background: Besides the incidence of esophageal atresia (EA) being higher in males, no other gender-specific differences in EA have been reported. The aim of this study was to search for gender-specific differences in EA.Methods: A retrospective study was conducted at a tertiary center for pediatric surgery. The medical charts of infants born with EA were reviewed. 20 girls were identified, and 20

Comparison of major complications in children after laparoscopy-assisted gastrostomy and percutaneous endoscopic gastrostomy placement : a meta-analysis

PURPOSE: A meta-analysis was performed to compare the rates of the major complications associated with two gastrostomy tube placement techniques in a pediatric population: laparoscopy-assisted gastrostomy (LAG) and percutaneous endoscopic gastrostomy (PEG).METHODS: The PubMed electronic database was queried for comparative studies of the two insertion techniques. The Newcastle-Ottawa scale (NOS) w

Surgical repair of long-gap esophageal atresia : A retrospective study comparing the management of long-gap esophageal atresia in the Nordic countries

BACKGROUND: Several surgical procedures have been described in the reconstruction of long-gap esophageal atresia (LGEA). We reviewed the surgical methods used in children with LGEA in the Nordic countries over a 15-year period and the postoperative complications within the first postoperative year.METHODS: Retrospective multicenter medical record review of all children born with Gross type A or B

Rotation Averaging and Strong Duality

In this paper we explore the role of duality principles within the problem of rotation averaging, a fundamental task in a wide range of computer vision applications. In its conventional form, rotation averaging is stated as a minimization over multiple rotation constraints. As these constraints are non-convex, this problem is generally considered challenging to solve globally. We show how to circu

Assessing self-association of intrinsically disordered proteins by coarse-grained simulations and SAXS

This research investigates the behavior of intrinsically disordered proteins (IDPs) in solution, especially the self-associating saliva protein Statherin, by a combined computational and experimental approach. For the computational part, a bead necklace model previously parameterised for Histatin 5 was used. This model was shown to be applicable to a range of monomeric intrinsically disordered pro