scholarly journals Visualisation of Parkinsonian, essential and physiological tremor planes in 3Dspace

2020 ◽  
pp. 331-337 ◽  
Author(s):  
P. Jombík ◽  
P. Spodniak ◽  
V. Bahýľ ◽  
J. Necpál
Keyword(s):  
Healthy Volunteers ◽  
Essential Tremor ◽  
Reference Frame ◽  
Input Data ◽  
Group Analysis ◽  
Physiological Tremor ◽  
Resting Tremor ◽  
3D Space ◽  
The Individual ◽  
Linear Accelerometer

Based on the fact that tremors display some distinct 3D spatial characteristics, we decided to visualise tremor planes in 3D space. We obtained 3-axial linear accelerometer signals of hand tremors from 58 patients with Parkinson´s disease (PD), 37 with isolated resting tremor (iRT), 75 with essential tremor (ET), and 44 healthy volunteers with physiological tremor (Ph). For each group analysis was done with subsequent spatial 3D regression of the input data i.e. along the x, y and z axes; the projected vector lengths in the individual (vertical transversal XY, vertical longitudinal XZ and horizontal YZ) reference frame planes and their angles. Most meaningful and statistically significant differences were found in the analyses of the 3D vector lengths. The tremor of the PD and the iRT group was oriented mainly in the horizontal YZ plane. The tremors of the patients with ET and Ph were oriented approximately in the midway between the all three referential planes with less tilt toward the vertical longitudinal XZ plane.

A Back Allocation Methodology to Estimate the Real-Time Flow and Assist Production Monitoring

2021 ◽  
Author(s):  
Gabriela Chaves ◽  
Danielle Monteiro ◽  
Virgilio José Martins Ferreira
Keyword(s):  
Real Time ◽  
Input Data ◽  
Oil Field ◽  
Well Testing ◽  
Well Test ◽  
Time Data ◽  
Time Flow ◽  
Well Model ◽  
Operational Information ◽  
The Individual

Abstract Commingle production nodes are standard practice in the industry to combine multiple segments into one. This practice is adopted at the subsurface or surface to reduce costs, elements (e.g. pipes), and space. However, it leads to one problem: determine the rates of the single elements. This problem is recurrently solved in the platform scenario using the back allocation approach, where the total platform flowrate is used to obtain the individual wells’ flowrates. The wells’ flowrates are crucial to monitor, manage and make operational decisions in order to optimize field production. This work combined outflow (well and flowline) simulation, reservoir inflow, algorithms, and an optimization problem to calculate the wells’ flowrates and give a status about the current well state. Wells stated as unsuited indicates either the input data, the well model, or the well is behaving not as expected. The well status is valuable operational information that can be interpreted, for instance, to indicate the need for a new well testing, or as reliability rate for simulations run. The well flowrates are calculated considering three scenarios the probable, minimum and maximum. Real-time data is used as input data and production well test is used to tune and update well model and parameters routinely. The methodology was applied using a representative offshore oil field with 14 producing wells for two-years production time. The back allocation methodology showed robustness in all cases, labeling the wells properly, calculating the flowrates, and honoring the platform flowrate.

High Performance Coaches’ Mental Health and Wellbeing: Applying the Areas of Work Life Model

2018 ◽  
Vol 5 (3) ◽  
pp. 293-300 ◽  
Author(s):  
Fraser Carson ◽  
Julia Walsh ◽  
Luana C. Main ◽  
Peter Kremer
Keyword(s):  
Mental Health ◽  
High Performance ◽  
Group Analysis ◽  
Work Life ◽  
Contributing Factors ◽  
Health And Wellbeing ◽  
Life Model ◽  
Workload Control ◽  
Sport Athlete ◽  
The Individual

In the last five years, mental health and wellbeing has attracted greater public, government, and research interest. In sport, athlete mental health and wellbeing has been a focus across all competition levels. The high performance coach responsible for athlete performance, health and wellbeing has not attracted the same attention despite working in an intense high-pressure work environment. Using the Areas of Work Life Model as a theoretical framework, this Insights paper discusses the existing coaching literature to ascertain both contributing factors for promoting positive mental health and wellbeing, and negative influences that increase stress and potential burnout. The six dimensions (workload; control; reward; fairness; community; and values) resonate throughout the coaching literature, but to-date, no study has applied the model to this group. Analysis of the extracted articles indicated that high performance coaches should become more self-aware around how to cope with stress and stressful situations, while sports organisations should invest in both the individual coach and the organisational culture to enhance work engagement. Coaches are performers and should prepare themselves to ensure they can perform at their peak; and managing their own mental health and wellbeing is an important component to this.

Comparative study on effect of neutral spinal bath and neutral spinal spray on blood pressure, heart rate and heart rate variability in healthy volunteers

2018 ◽  
Vol 16 (2) ◽  
Author(s):  
Arundhati Goley ◽  
A. Mooventhan ◽  
NK. Manjunath
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Healthy Volunteers ◽  
Group Analysis ◽  
Low Frequency ◽  
Single Session ◽  
Arterial Blood ◽  
Before And After ◽  
Instantaneous Heart Rate

Abstract Background Hydrotherapeutic applications to the head and spine have shown to improve cardiovascular and autonomic functions. There is lack of study reporting the effect of either neutral spinal bath (NSB) or neutral spinal spray (NSS). Hence, the present study was conducted to evaluate and compare the effects of both NSB and NSS in healthy volunteers. Methods Thirty healthy subjects were recruited and randomized into either neutral spinal bath group (NSBG) or neutral spinal spray group (NSSG). A single session of NSB, NSS was given for 15 min to the NSBG and NSSG, respectively. Assessments were taken before and after the interventions. Results Results of this study showed a significant reduction in low-frequency (LF) to high-frequency (HF) (LF/HF) ratio of heart rate variability (HRV) spectrum in NSBG compared with NSSG (p=0.026). Within-group analysis of both NSBG and NSSG showed a significant increase in the mean of the intervals between adjacent QRS complexes or the instantaneous heart rate (HR) (RRI) (p=0.002; p=0.009, respectively), along with a significant reduction in HR (p=0.002; p=0.004, respectively). But, a significant reduction in systolic blood pressure (SBP) (p=0.037) and pulse pressure (PP) (p=0.017) was observed in NSSG, while a significant reduction in diastolic blood pressure (DBP) (p=0.008), mean arterial blood pressure (MAP) (p=0.008) and LF/HF ratio (p=0.041) was observed in NSBG. Conclusion Results of the study suggest that 15 min of both NSB and NSS might be effective in reducing HR and improving HRV. However, NSS is particularly effective in reducing SBP and PP, while NSB is particularly effective in reducing DBP and MAP along with improving sympathovagal balance in healthy volunteers.

scholarly journals EEGIFT: Group Independent Component Analysis for Event-Related EEG Data

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Tom Eichele ◽  
Srinivas Rachakonda ◽  
Brage Brakedal ◽  
Rune Eikeland ◽  
Vince D. Calhoun
Keyword(s):  
Independent Component Analysis ◽  
Phase Locking ◽  
Group Analysis ◽  
Component Analysis ◽  
Independent Component ◽  
Group Model ◽  
Simulated Event ◽  
Latency Jitter ◽  
The Individual ◽  
Order Components

Independent component analysis (ICA) is a powerful method for source separation and has been used for decomposition of EEG, MRI, and concurrent EEG-fMRI data. ICA is not naturally suited to draw group inferences since it is a non-trivial problem to identify and order components across individuals. One solution to this problem is to create aggregate data containing observations from all subjects, estimate a single set of components and then back-reconstruct this in the individual data. Here, we describe such a group-level temporal ICA model for event related EEG. When used for EEG time series analysis, the accuracy of component detection and back-reconstruction with a group model is dependent on the degree of intra- and interindividual time and phase-locking of event related EEG processes. We illustrate this dependency in a group analysis of hybrid data consisting of three simulated event-related sources with varying degrees of latency jitter and variable topographies. Reconstruction accuracy was tested for temporal jitter 1, 2 and 3 times the FWHM of the sources for a number of algorithms. The results indicate that group ICA is adequate for decomposition of single trials with physiological jitter, and reconstructs event related sources with high accuracy.

Ego Training in Action in Culture and History

2001 ◽  
Vol 34 (1) ◽  
pp. 55-64 ◽  
Author(s):  
Elisabeth Engels
Keyword(s):  
Learning Process ◽  
Group Analysis ◽  
Second Step ◽  
German Culture ◽  
Self Organized ◽  
Early Infant ◽  
Child Relationship ◽  
Norbert Elias ◽  
The Individual ◽  
Mother Child Relationship

Referring to Foulkes's thesis on `ego training in action' this article draws particular attention to the cultural and historical impacts on this self-organized learning process of the individual in group analysis. First, the reflections of Norbert Elias on configurations in German culture are presented. In a second step the conceptualization of early infant upbringing will be analysed in a way that is decentred from the mother-child relationship towards the configurations of the surrounding society. Third, it is suggested that the German habitus is reflected in early infant upbringing in the 1930s, in the pattern of detachment. Finally, by focusing on the individual, there will be a brief discussion of how understanding and attachment can prevent the development from pain to violence: by ego training in action in culture and history.

Impact of Fidelity in 3D Space Visualisation Across the Construction Asset Lifecycle

2016 ◽  
Vol 5 (1) ◽  
pp. 16-28
Author(s):  
Noha Saleeb
Keyword(s):  
Human Perception ◽  
Virtual Spaces ◽  
3D Space ◽  
Building Models ◽  
Effective Decision ◽  
Effective Decision Making ◽  
The Individual ◽  
Physical Spaces ◽  
The Impact ◽  
Published Research

3D virtual building models are used to help clients reach decisions during concept and detailed design phases. However, previously published research provides evidence for discrepancies between human perception of virtual and physical spaces; thus perceiving each virtual dimension (height, width, depth) differently from its physical counterpart, with varying percentages. This can affect clients' effective decision-making during coordination if 3D virtual representations are not perceived identical to their physical equivalent. This paper discusses the impact of these discrepancies beyond the design phases and into the whole lifecycle, construction and operations. Moreover, descriptive and inferential statistical analysis provides evidence of relationships between the physical and virtual perception differences in dimension, discussing possible factors contributing to perception discrepancies affecting the individual viewer, in 2 main areas 1) 3D authoring software 2) psychophysical factors. Possible solutions are also proposed to accommodate for the discrepancy between physical and virtual spaces.

scholarly journals The impact of the artery geometry with the sewn surgical patch on the blood flow disorders

2019 ◽  
Vol 128 ◽  
pp. 02005
Author(s):  
Natalia Lewandowska ◽  
Michal Cialkowski
Keyword(s):  
Blood Flow ◽  
Input Data ◽  
Polynomial Function ◽  
Blood Parameters ◽  
Atherosclerotic Plaques ◽  
Fluid Density ◽  
The Common ◽  
The Individual ◽  
The Impact ◽  
Patch Length

The research concerns the development of geometric variants of patches sewn into the common carotid artery during surgery of the atherosclerotic plaques removal. Based on analytical methods, thegeometry of the patch described by the polynomial function has been developed. The simulations of blood flow in the arteries with the sewn patch were performed. The study included the influence of the patient’s diameter and the width of the chosen patch on blood flow disorders. The result of the research is the algorithm of selecting the geometry of the arterial patch to the individual geometrical featuresof the patient’s artery. The studies result will comprise the development of software, which, upon introduction of input data related to arterial geometry, patch length and patient’s blood parameters (affecting the fluid density and viscosity), shall generate an accurate contour of the patch of width causing no flow disorders.

Tremor is attenuated during walking in essential tremor with resting tremor but not parkinsonian tremor

2011 ◽  
Vol 18 (9) ◽  
pp. 1224-1228 ◽  
Author(s):  
Kei Uchida ◽  
Masaaki Hirayama ◽  
Fumitada Yamashita ◽  
Norio Hori ◽  
Tomohiko Nakamura ◽  
...  
Keyword(s):  
Essential Tremor ◽  
Parkinsonian Tremor ◽  
Resting Tremor
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