5,101 research outputs found
Deutliche und gründliche Erklärung der Adelichen und Ritterlichen freyen Fecht-Kunst : Lectionen auff den stoß/ und deren gebrauchs eigentlicher Nachricht. Auff die rechte Italianische Art und manir, in dieses Tractätlein verfaßt/ und mit nothwendigen Kupfferstücken nach möglichkeit gezieret und vor Augen gestelt / Durch Jeann Daniel L'Ange ...
No full textHuman vestibular perceptual thresholds — A systematic review of passive motion perception
No full textBACKGROUND
The vestibular system detects head accelerations within 6 degrees of freedom. How well this is accomplished is described by vestibular perceptual thresholds. They are a measure of perceptual performance based on the conscious evaluation of sensory information. This review provides an integrative synthesis of the vestibular perceptual thresholds reported in the literature. The focus lies on the estimation of thresholds in healthy participants, used devices and stimulus profiles. The dependence of these thresholds on the participants clinical status and age is also reviewed. Furthermore, thresholds from primate studies are discussed.
RESULTS
Thresholds have been measured for frequencies ranging from 0.05 to 5 Hz. They decrease with increasing frequency for five of the six main degrees of freedom (inter-aural, head-vertical, naso-occipital, yaw, pitch). No consistent pattern is evident for roll rotations. For a frequency range beyond 5 Hz, a U-shaped relationship is suggested by a qualitative comparison to primate data. Where enough data is available, increasing thresholds with age and higher thresholds in patients compared to healthy controls can be observed. No effects related to gender or handedness are reported.
SIGNIFICANCE
Vestibular thresholds are essential for next generation screening tools in the clinical domain, for the assessment of athletic performance, and workplace safety alike. Knowledge about vestibular perceptual thresholds contributes to basic and applied research in fields such as perception, cognition, learning, and healthy aging. This review provides normative values for vestibular thresholds. Gaps in current knowledge are highlighted and attention is drawn to specific issues for improving the inter-study comparability in the future
The Family History Of Daniel C. Hodges
No full textThe Family History of Daniel C. Hodges 21 April 2018
Daniel Clayton Hodges authored this family history as part of the course requirements for HIST 550/700 Your Family in History offered online in Spring 2018 and was submitted to the Pittsburg State University Digital Commons. Please contact the author directly with any questions or comments: [email protected]
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License
3D Models of 6of Motion
No full textThis repository contains a 3d model (head_6dof.blend) visualizing motions with 6 degrees of freedom. For the head we use a 3D model created with make human under the CC BY-SA 3.0 license. All body parts but the head were removed from the model used. The main model contains the head, all planes, axes, and labels. Examples of rendered images and an animation are included. The model was created with Blender
3D Models of 6dof Motion
No full textThis repository contains a 3d model (head_6dof.blend) visualizing motions with 6 degrees of freedom. For the head we use a 3D model created with make human under the CC BY-SA 3.0 license. All body parts but the head were removed from the model used. The main model contains the head, all planes, axes, and labels. Examples of rendered images and an animation are included.The model was created with Blender.
Nomenclature
Names of the axes and planes according to Bremova et al., 2016:
Abreviation
Axis
IA
inter-aural
HV
head-vertical
NO
naso-occipital
Colors
Colors are taken from the Bang Wong color palette which is designed to be accessible to people who are colorblind.
Axis
Color
RGB
IA
bluish green
000,158,115
HV
blue
000,114,178
NO
vermillion
213,094,000
roll
reddish purple
204,121,167
pitch
orange
230,159,000
yaw
sky blue
086,180,23
Table_3_Cellular Aspects of Muscle Specialization Demonstrate Genotype – Phenotype Interaction Effects in Athletes.docx
No full textIntroductionGene polymorphisms are associated with athletic phenotypes relying on maximal or continued power production and affect the specialization of skeletal muscle composition with endurance or strength training of untrained subjects. We tested whether prominent polymorphisms in genes for angiotensin converting enzyme (ACE), tenascin-C (TNC), and actinin-3 (ACTN3) are associated with the differentiation of cellular hallmarks of muscle metabolism and contraction in high level athletes.MethodsMuscle biopsies were collected from m. vastus lateralis of three distinct phenotypes; endurance athletes (n = 29), power athletes (n = 17), and untrained non-athletes (n = 63). Metabolism-, and contraction-related cellular parameters (such as capillary-to-fiber ratio, capillary length density, volume densities of mitochondria and intramyocellular lipid, fiber mean cross sectional area (MCSA) and volume densities of myofibrils) and the volume densities of sarcoplasma were analyzed by quantitative electron microscopy of the biopsies. Gene polymorphisms of ACE (I/D (insertion/deletion), rs1799752), TNC (A/T, rs2104772), and ACTN3 (C/T, rs1815739) were determined using high-resolution melting polymerase chain reaction (HRM-PCR). Genotype distribution was assessed using Chi2 tests. Genotype and phenotype effects were analyzed by univariate or multivariate analysis of variance and post hoc test of Fisher. P-values below 0.05 were considered statistically significant.ResultsThe athletes demonstrated the specialization of metabolism- and contraction-related cellular parameters. Differences in cellular parameters could be identified for genotypes rs1799752 and rs2104772, and localized post hoc when taking the interaction with the phenotype into account. Between endurance and power athletes these concerned effects on capillary length density for rs1799752 and rs2104772, fiber type distribution and volume densities of myofibrils (rs1799752), and MSCA (rs2104772). Endurance athletes carrying the I-allele of rs1799752 demonstrated 50%-higher volume densities of mitochondria and sarcoplasma, when power athletes that carried only the D-allele showed the highest fiber MCSAs and a lower percentage of slow type muscle fibers.DiscussionACE and tenascin-C gene polymorphisms are associated with differences in cellular aspects of muscle metabolism and contraction in specifically-trained high level athletes. Quantitative differences in muscle fiber type distribution and composition, and capillarization in knee extensor muscle explain, in part, identified associations of the insertion/deletion genotypes of ACE (rs1799752) with endurance- and power-type Sports.</p
Ethnic identity, political identity and ethnic conflict: simulating the effect of congruence between the two identities on ethnic violence and conflict
No full textThis thesis outlines and presents an alternative hypothetical process to the emergence of ethnic conflict. Ethnic conflicts, rather than being dependent upon pre-existing 'ancient hatreds', are instead the result of a congruence between ethnic and political identity which grants individuals the ability to use ethnicity to identify and eliminate political threats. This hypothesis is formed by the examination of three case studies of ethnic conflict: Lebanon, Northern Ireland and Croatia. This hypothesis is then formalised and tested using an agent based simulation in which agent interactions are dependent upon ethnic and political identity and the congruence between the two. As predicted there was a strong positive correlation between how accurately ethnic identity reflected political identity and the level of ethnically motivated violence in the simulation, although the relationship was not linear. Furthermore the effect of a shift in congruence was found to be roughly comparable to the effect of initialising agents with a moderate level of pre-existing ethnic antagonism
Replication Data for: Interests, Information and Minority Influence in Deliberation
No full textThis data and code are to replicate the findings in "Interests, Information and Minority Influence in Deliberation." Please email the author at [email protected] or [email protected] with any questions
Replication Data for: Interests, Information and Minority Influence in Deliberation
No full textThis data and code are to replicate the findings in "Interests, Information and Minority Influence in Deliberation." Please email the author at [email protected] or [email protected] with any questions
PlatformCommander — An open source software for an easy integration of motion platforms in research laboratories
No full textMotion platforms are used to study human behavior and brain function during passive motions. The software for controlling motion platforms is typically developed by the respective laboratories. Such customized, closed source solutions make replications of studies or multi-center collaborations difficult. Therefore, we developed PlatformCommander, an open-source software package for interfacing two often used motion platform models (6DOF2000E., MB-E-6DOF). The software includes a server implementing the interaction with the motion platform and additional devices, and a client application, connecting to the server and controlling experiments. PlatformCommander is ideal for the synchronization of data from different sources with high temporal precision
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