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PubMed Journals Articles About "Nielsen Norman Group" RSS

04:36 EST 14th November 2019 | BioPortfolio

Nielsen Norman Group PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Nielsen Norman Group articles that have been published worldwide.

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Showing "Nielsen Norman Group" PubMed Articles 1–25 of 11,000+

Quantum Computation as Gravity.

We formulate Nielsen's geometric approach to circuit complexity in the context of two-dimensional conformal field theories, where series of conformal transformations are interpreted as "unitary circuits" built from energy-momentum tensor gates. We show that the complexity functional in this setup can be written as the Polyakov action of two-dimensional gravity or, equivalently, as the geometric action on the coadjoint orbits of the Virasoro group. This way, we argue that gravity sets the rules for optimal q...


Harvey Cushing's influence on Norman Dott's work on Acromegaly: Pituitary research, treatment modalities and research dissemination c.1900-c.1960.

Diagnostic value of chest ultrasound in children with cystic fibrosis - Pilot study.

Cystic fibrosis (CF) is one of the most common genetic disorders among the White population. The disease has a progressive course and leads to a reduction in the quality of life and of life expectancy. Standard diagnostic procedures used in the monitoring of CF patients include methods which expose patients to ionizing radiation. With increasing life expectancy in CF the cumulative dose of ionising radiation increases, prompting clinicians' search for safer imaging studies. Despite its safety and availabili...


Anthony W Norman, PhD, Biochemist, Mentor, Distinguished Professor, and Principal Steward of Vitamin D Science (1938-2019).

In-group favouritism and out-group discrimination in naturally occurring groups.

We study in-group favouritism and out-group discrimination in a multiplayer dictator game in a naturally occuring group setting. An allocator divides a large sum of money among three groups of around 20 recipients each and also to themselves. The groups are supporters of two rival political movements in Thailand and politically neutral subjects. The non-rival out-group acts as a reference point and allows us to measure in-group favouritism and out-group discrimination. A treatment with artificial groups ser...

Methylation Landscape of RUNX3 Promoter Region as a Predictive Marker for Th1/Th2 Imbalance in Bronchiolitis.

BACKGROUND The methylation status of RUNX3 promoter region, its impact on RUNX3 gene expression, and Th1/Th2 imbalance are unknown in bronchiolitis. This study aimed to explore the predictors of bronchiolitis developing into asthma. MATERIAL AND METHODS The methylation status of RUNX3 promoter was assessed using Illumina HiSeq platform method. The relative RUNX3 mRNA levels in PBMCs were measured by qRT-PCR. Serum IL-4 and IFN-γ concentrations were measured by ELISA. RESULTS A series of sites with signific...

The effects of triptolide on the cellular activity of cryopreserved rat sciatic nerves and nerve regeneration after allotransplantation.

: To investigate the effects of triptolide (T10) on the cellular activity of cryopreserved rat sciatic nerves and nerve regeneration after allotransplantation. : After the optimal T10 concentration was determine, sciatic nerve fragments from Sprague-Dawley (SD) rats were randomly divided into 5 groups: the fresh nerve group (group A), the Dulbecco's modified Eagle's medium (DMEM)-preservation group (group B), the T10-preservation group (group C), the T10-pretreatment, DMEM-preservation group (group D), and ...

Culicipedia: Species-group, Genus-group and Family-group Names in Culicidae (Diptera)Culicipedia: Species-Group, Genus-Group and Family-Group Names in Culicidae (Diptera). 2018. Ralph E. Harbach. Boston, MA: CAB International, 378 p. ISBN 13: 9781786399052.

Group conquers efficacy: Preschoolers' imitation under conflict between minimal group membership and behavior efficacy.

Research has found that preschoolers' imitation demonstrates in-group bias and is guided by behavior efficacy. However, little is known about whether children's sensitivity to behavior efficacy affects their in-group imitation. This study aimed to investigate preschoolers' imitation tendency when group preference and behavior efficacy are in conflict. Participants were 4-year-old (N = 72) and 6-year-old (N = 72) preschoolers in China. They observed two demonstrators (one in-group and one out-group) pressing...

The 2,2-Dimethyl-2-(-nitrophenyl)acetyl (DMNPA) Group: A Novel Protecting Group in Carbohydrate Chemistry.

The 2,2-dimethyl-2-(-nitrophenyl)acetyl (DMNPA) group was introduced to synthetic carbohydrate chemistry as a protecting group (PG) for the first time. Benefiting from a unique chemical structure and novel deprotection conditions, the DMNPA group can be cleaved rapidly and mutually orthogonal to other PGs. Orchestrated application of the DMNPA group with other PGs led to the highly efficient synthesis of the glycan of thornasterside A.

Intermittent administration of low dose ketamine can shorten the course of electroconvulsive therapy for depression and reduce complications: A randomized controlled trial.

This study aimed to investigate the efficacy and safety of intermittent low-dose ketamine on improving the efficacy of ECT. Patients diagnosed with Major Depressive Disorder (MDD) (n = 134) were randomized into 3 groups: routine ECT group (group E, n = 45); repeated ketamine-assisted ECT group (group RK, n = 43), and intermittent ketamine-assisted ECT group (group IK, n = 46). Patients in group RK were given ketamine at the dose of 0.3 mg/kg for each ECT treatment, patients in group IK wer...

Floquet Chiral Magnetic Effect.

A single Weyl fermion, which is prohibited in static lattice systems by the Nielsen-Ninomiya theorem, is shown to be realized in a periodically driven three-dimensional lattice system with a topologically nontrivial Floquet unitary operator, manifesting the chiral magnetic effect. We give a topological classification of Floquet unitary operators in the Altland-Zirnbauer symmetry classes for all dimensions, and use it to predict that all gapless surface states of topological insulators and superconductors ca...

The impact of environmental factors on persons with dementia attending recreational groups.

The Comprehensive Process Model of Group Engagement posits that personal factors (e.g., cognitive function), stimulus factors (e.g., group activity content, group size) and environmental factors (e.g., light, noise) impact the response to group activities. This paper reports the impact of environmental and group characteristics on engagement, mood, and sleepiness of persons with dementia attending group activities.

Towards the elucidation of evolution of out-group aggression.

We focus on the implications of De Dreu and Gross's findings for the evolutionary perspective on out-group aggression and in-group cooperation. Although their experimental protocols are potentially useful in determining the origins of out-group aggression in humans, they so far provide inconclusive evidence only. We suggest ways of furthering our understanding of the connection between parochial cooperation and intergroup conflict.

First Law of Holographic Complexity.

We investigate the variation of holographic complexity for two nearby target states. Based on Nielsen's geometric approach, we find the variation only depends on the end point of the optimal trajectory, a result which we designate the first law of complexity. As an example, we examine the complexity=action conjecture when the anti-de Sitter vacuum is perturbed by a scalar field excitation, which corresponds to a coherent state. Remarkably, the gravitational contributions completely cancel and the final vari...

Effect of vibration on the vestibular system in noisy and noise-free environments in heavy industry.

Chronic exposure to whole body vibration can affect the gastrointestinal system, the lumbar spine, the peripheral veins and the vestibulocochlear system. The aim of this study was to evaluate the effects of vibration on the vestibular system in noisy and noise-free environments using the video head impulse test (vHIT). A total of 138 employees were included in this study. Group 1 were exposed to vibration and noise. Group 2 only exposed to vibration, with no exposure to noise. Group 3 were not exposed to ...

Semen parameters and testicular dimensions in small breed dogs below ten-kilogram bodyweight.

Because of few available data on semen parameters in small breed dogs, the study aimed to analyse semen and measure testes of dogs < 10.0 kg bodyweight. Semen was collected from 41 fertile stud dogs which were divided based on bodyweight: group 1 < 5.0 kg, and group 2 between 5.1 and 10.0 kg. Median values for ejaculate volume (group 1: x ̃ 1.2 mL; group 2: x ̃ 2.2 mL), total sperm output (group 1: x ̃ 110.7 x 106; group 2: x ̃ 215.1 x 106) and testicular volume (group 1: left testicle x ̃ 2.8 mL, righ...

New stoichiometric compounds of Au-Hg system under high pressure.

We have extensively explored Au-Hg system under high pressure in the range of 0-300 GPa with and without spin-orbit coupling (SOC) inclusion. The variable-composition methodology has been used as employed in Universal Structure Predictor: Evolutionary Xtallograpgy (USPEX) in combination with Vienna Ab Initio Simulation Package (VASP). We have predicted several thermodynamically stable stoichiometric compounds of Au-Hg system, i.e. Au3Hg (space group 194, P63/mmc), AuHg (space group 62, Pnma), AuHg2 (space g...

Returning to home cage serves as an effective reward for maze learning in rats.

This study examined the effectiveness in rats of 'returning to home cage' as a reward for learning a Lashley III maze. Rats could return to their home cage directly (Direct HC group) or they could be removed manually by an experimenter from the maze's goal box (Indirect HC group). In the third group, hungry rats received a food reward in the goal box (Food group). The Direct HC group reliably learned the maze and its performance was very similar to that of the Food group. In contrast, performance by the Ind...

Emergent Invasive Group A Streptococcus dysgalactiae subsp. Equisimilis, United States, 2015-2018.

The term group A Streptococcus is considered synonymous for the species Streptococcus pyogenes. We describe an emergent invasive S. dysgalactiae subspecies equisimilis lineage that obtained the group A antigen through a single ancestral recombination event between a group C S. dysgalactiae subsp. equisimilis strain and group A S. pyogenes strain.

Spinopelvic parameters in degenerative spondylolisthesis.

The purpose of this study was to compare various sagittal spinopelvic parameters between patients with and without degenerative lumbar spondylolisthesis (DLS). A total of 165 patients who underwent surgery for low back and/or radicular pain were divided into two groups: those without DLS (non-DLS group; n = 85) and those with DLS (DLS group; n = 80). In all sagittal spinopelvic parameters, no significant difference was found between the non-DLS and DLS groups. The mean pelvic incidence (PI) value of the DLS...

Correlation analysis between IL-35, IL-36γ, CCL27 and psoriasis vulgaris.

Evaluating the serum level of IL-35, IL-36γ and CCL27 cytokines expression in patients with psoriasis and to explore their correlation with disease severity. To explore the role of these cytokines in the pathogenesis of psoriasis vulgaris and to guide clinical practice. Thirty patients with psoriasis vulgaris (PV) were treated with routine drug treatment for7 weeks, and 30 healthy controls were used as control group. Peripheral blood of the PV group before and after treatment and control group were detecte...

Power struggles: when and why the benefits of power for individuals paradoxically harm groups.

Research on the dysfunctions of power for group interactions is covered in this review. While individuals generally benefit from possessing power, groups often are plagued by power struggles when one or more individuals within the group possess power, such as in groups with high intra-group power dispersion (e.g. a clear job title hierarchy or differences in salary levels) or a high average level of member power (e.g. management teams, all-star sports teams). In such groups with at least one powerful member...

Group bias in children's merit-based resource allocation.

From early in life, children show sensitivity to both merit and group membership. However, little research has examined how children react to the conflicting demands of allocating meritoriously and favoring in-groups during resource allocation over the course of their development. We compared how children aged 3-5 years and children aged 6-8 years allocated and reasoned about allocations to in-group and out-group members in a merit-based context. In Study 1, in four distribution tasks, children needed t...

Does group membership affect children's judgments of social transgressions?

Children judge in-group members more favorably than out-group members. They also judge moral transgressions as more serious and more worthy of punishment than conventional transgressions. Here we asked whether children's judgments of moral and conventional transgressions vary by the group membership of the transgressor (in-group, neutral, out-group, or self). In addition, we asked whether judgments of the transgressions would extend to the transgressors themselves, including cases in which the self was the ...


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