Sökresultat

Filtyp

Din sökning på "*" gav 533397 sökträffar

Evolution of organ systems in the Crustacea: Mystacocarida and Cephalocrida in retrospect

The morphology of the internal organs of two representative species of the crustacean classes Mystacocarida, Derocheilocaris typica (Pennak & Zinn, 1943), and Cephalocarida, Hutchinsoniella macracantha (Sanders, 1955), has been studied ultrastructurally from 1990 onwards. A review of the subject offers a unique opportunity to compare and contrast the two taxa at a time when their key positions

Stand-Alone Artificial Intelligence for Breast Cancer Detection in Mammography : Comparison With 101 Radiologists

BACKGROUND: Artificial intelligence (AI) systems performing at radiologist-like levels in the evaluation of digital mammography (DM) would improve breast cancer screening accuracy and efficiency. We aimed to compare the stand-alone performance of an AI system to that of radiologists in detecting breast cancer in DM.METHODS: Nine multi-reader, multi-case study datasets previously used for different

Channel Correlation Diversity in MU-MIMO Systems - Analysis and Measurements

In multiuser multiple–input multiple–output (MU–MIMO) systems, channel correlation is detrimental to system performance. We demonstrate that widely used, yet overly simplified, correlation models that generate identical correlation profiles for each terminal tend to severely underestimate the system performance. In sharp contrast, more physically motivated models that capture variations in the pow

Evacuation planning optimization based on a multi-objective artificial bee colony algorithm

Evacuation is an important activity for reducing the number of casualties and amount of damage in disaster management. Evacuation planning is tackled as a spatial optimization problem. The decision-making process for evacuation involves high uncertainty, conflicting objectives, and spatial constraints. This study presents a Multi-Objective Artificial Bee Colony (MOABC) algorithm, modified to prov

Cognitive Behaviour Therapy for Post Traumatic Stress Disorder

It is only relatively recently that Post Traumatic Stress Disorder (PTSD) hasbeen recognised in children. Controlled treatment outcome studies ofchildhood PTSD are scarce, but those that exist indicate that CognitiveBehaviour Therapy (CBT) is an effective intervention. In this article, webriefly describe PTSD in children and outline some behavioural andcognitive models of the disorder. Derived fro

GAD-specific cognitive behavioral treatment for children and adolescents : A pilot randomized controlled trial

Cognitive behavioral therapy (CBT) designed to target Generalized Anxiety Disorder (GAD) in youth was examined in a pilot feasibility trial. Participants (aged 10-18 years) were randomized to either 10 weeks of individual CBT (n = 20) or supported wait-list (n = 20). Diagnostic status (primary outcome) was assessed blindly at post-treatment for both groups, and at a 3-month follow-up for treated p

Intolerance of uncertainty-focused treatment for adolescents with excessive worry - A pilot feasibility study

Bouts of excessive worry are common across the lifespan, increasing in frequency and complexity during adolescence and adulthood, and are found in several psychiatric disorders, particularly the anxiety disorders. There are evidence-based treatments for adolescents with anxiety disorders but psychological treatments designed specifically to target excessive worrying in adolescents are rare. Intole

Energy efficiency as a wicked problem

Together with increased shares of renewable energy supply, improved energy efficiency is the foremost means of mitigating climate change. However, the energy efficiency potential is far from being realized, which is commonly explained by the existence of various barriers to energy efficiency. Initially mentioned by Churchman, the term "wicked problems" became established in the 1970s, meaning a ki

Many Labs 2 : Investigating variation in replicability across samples and settings

We conducted preregistered replications of 28 classic and contemporary published findings, with protocols that were peer reviewed in advance, to examine variation in effect magnitudes across samples and settings. Each protocol was administered to approximately half of 125 samples that comprised 15,305 participants from 36 countries and territories. Using the conventional criterion of statistical sWe conducted preregistered replications of 28 classic and contemporary published findings, with protocols that were peer reviewed in advance, to examine variation in effect magnitudes across samples and settings. Each protocol was administered to approximately half of 125 samples that comprised 15,305 participants from 36 countries and territories. Using the conventional criterion of statistical s

The Benefit of a Flexible Ankle-Foot Orthosis on Balance and Walking Ability in Persons with Late Effects of Polio : A Mixed-Methods Study

ABSTRACT Introduction Many persons with late effects of polio (LEoP) have muscle weakness in the lower limbs, which affects their balance and walking ability. Although an ankle-foot orthosis (AFO) is commonly prescribed for these persons, there is limited knowledge if an AFO improves their balance and walking ability in terms of speed, distance, and perceived safety. The aims of this study were 1)