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Search Results: 1 - 10 of 250843 matches for " Sinkj?r Thomas "
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Central nervous system lesions leading to disability
Popovi? Dejan B.,Sinkjr Thomas
Journal of Automatic Control , 2008, DOI: 10.2298/jac0802011p
Abstract: The introductory tutorial to this special issue was written for readers with engineering background with the aim to provide the basis for comprehending better the natural motor control and the terminology used in description of impairments and disability caused by to CNS injuries and diseases. The tutorial aims to emphasize the differences between natural and artificial control, complexity of sensory-motor systems in humans, the high level of articulation redundancy, and the fact that all of the said systems are modified after the central nervous system lesion. We hope that the tutorial will simplify the following of the subsequent papers in this special issue dedicated to the use of electrical stimulation with surface electrodes for assisting motor functions.
The Influence of Islam on the Assessment of Earthquake Hazards and Seismic Risk  [PDF]
Thomas R. Paradise
Open Journal of Earthquake Research (OJER) , 2012, DOI: 10.4236/ojer.2012.11001
Abstract: The article has been retracted due to the investigation of complaints received against it. The paper is withdrawn due to paper duplication which has been published by the author years before. This paper published in Vol.1 No.1 1-12 (pages), 2012, has been removed from this site.
Long-Memory and Spurious Breaks in Ecological Experiments  [PDF]
Thomas R. Boucher
Open Journal of Statistics (OJS) , 2017, DOI: 10.4236/ojs.2017.75054
Abstract: The impact of long-memory on the Before-After-Control-Impact (BACI) design and a commonly used nonparametric alternative, Randomized Intervention Analysis (RIA), is examined. It is shown the corrections used based on short-memory processes are not adequate. Long-memory series are also known to exhibit spurious structural breaks that can be mistakenly attributed to an intervention. Two examples from the literature are used as illustrations.
Risk of overweight and obesity among migrants in Switzerland  [PDF]
Thomas Volken, Peter Rüesch
Health (Health) , 2012, DOI: 10.4236/health.2012.48082
Abstract: We assessed the risk of overweight and obesity for six large migrant groups in Switzerland. We used population-based survey data form the Swiss Migrant Health Survey 2010 and the Swiss Health Survey 2007. The sample comprised permanent residents aged 17 - 64 years (n = 14,637). Multivariate logistic regressions have been used to estimate odds ratios (OR). Compared with Swiss nationals, the odds of being obese were 1.97 times higher for Turkish nationals (CI-95 1.26, 3.07), 1.73 times higher for Kosovan nationals (CI-95 1.09, 2.74) and 3.42 times higher for Serbs (CI-95 2.28, 5.12). The chance of being obese was not statistically different between Swiss nationals and those from Portugal, Italy, and Germany. The chance of being overweight or obese (BMI ≥ 25) was higher for migrants than for Swiss nationals. The respective odds were 1.54 times higher for nationals from Portugal (CI-95 1.13, 2.11), 2.05 times higher for those from Turkey (CI-95 1.50, 2.78), 2.67 times higher for those from Serbia (CI-95 1.93, 3.68), 2.68 times higher for those from Kosovo (CI-95 2.01, 3.56), and 2.16 times higher for nationals from Italy (CI-95 1.54, 3.02). We suggest that preventive initiatives should take into account the specific needs of migrants as well as the needs of persons with low education from all nationalities.
Health Status Inequality among Immigrants in Switzerland  [PDF]
Thomas Volken, Peter Rüesch
Open Journal of Preventive Medicine (OJPM) , 2014, DOI: 10.4236/ojpm.2014.46054

Objective: To assess self-rated health and impairments for six large immigrant groups (Germany, Italy, Kosovo, Portugal, Serbia, Turkey) in Switzerland. Methods: We used population-based survey data from the Swiss Migrant Health Survey 2010 and the Swiss Health Survey 2007. The sample comprised permanent residents aged 17 - 64 years (n = 14,637). Multivariate logistic regressions have been used to estimate odds ratios (OR). Results: Ill health and activities of daily living (ADL) impairments were associated with older age in all groups. However, nationals from Turkey and nationals from Kosovo were substantially more likely than Swiss to report ill health (OR = 1.05; CI = 1.02 - 1.09; P = 0.001 and OR = 1.05; CI = 1.01 - 1.10; P = 0.016) and ADL impairments (OR = 1.06; CI = 1.03 - 1.09; P = 0.000 and OR = 1.04; CI = 1.01 - 1.07; P = 0.004) with increasing age. Furthermore, Portuguese women were more likely (OR = 2.65; CI = 1.40 - 5.03; P = 0.003) to report ill health than Swiss women. Conclusions: Immigrant-specific preventive and health promotion initiatives should target vulnerable immigrants from Turkey, Portugal, and Kosovo. Furthermore, groups with few economic and psychosocial resources in the general population of Switzerland should be more involved in interventions to reduce health risk.

Force Field Based MM2 Molecule-Surface Binding Energies for Graphite and Graphene  [PDF]
Jae H. Son, Thomas R. Rybolt
Graphene (Graphene) , 2013, DOI: 10.4236/graphene.2013.21004
Abstract: The gas phase adsorption of 118 organic molecules on graphite and graphene was studied by calculating their molecule surface binding energies, Ecal*, using molecular mechanics MM2 parameters. Due to the general lack of reported experimental binding energy values for organic molecules with graphene, E*(graphene), it was considered desirable to have a simple but effective method to estimate these values. Calculated binding energy values using a three-layer model, Ecal*(3), were compared and correlated to published experimental values for graphitic surfaces, E*(graphite). Pub-lished values of experimental binding energies for graphite, E*(graphite), were available from gas-solid chromatogram-phy in the Henry’s Law region over a range of temperature. Calculated binding energy values using a one-layer model, Ecal*(1), were compared to the three-layer Ecal*(3) values and found to consistently be 93.5% as large. This relation along with an E*(graphite) and Ecal*(3) correlation was used to develop a means to estimate molecule-graphene bind-ing energies. Using this approach we report estimated values of 118 molecule-graphene binding energy values.
Storage and Timed Release of Acetaminophen from Porous Carbonaceous Materials  [PDF]
Sarah E. McCary, Thomas R. Rybolt
Open Journal of Physical Chemistry (OJPC) , 2013, DOI: 10.4236/ojpc.2013.32010
Abstract: Six carbon powders with varied surface areas and porosities were used to store and release acetaminophen (ACT). A 10 mg/mL solution of acetaminophen in phosphate buffer solution (pH = 7.0) at 25 with exposure to carbon powder for 72 hours was used to drive the maximum loading of acetaminophen into the powders. Carboxen 1012 (BET surface area of1500 m2/g) powder exhibited the greatest maximum adsorption of ACT (up to 62% by mass). The maximum ACT adsorption was correlated with surface area and porosity. The most effective carbon powders for binding ACT were ones containing high mesopore volumes. Loaded carbon powder was separated from the ACT solution and then phosphate buffer solution (pH = 7.0) was combined with the loaded carbon powder and ACT absorbance readings at 243 nm were taken over time. The various carbon powders were able to release a portion of the ACT that they originally adsorbed. The Carboxen 1012 powder displayed the greatest ACT release with a rapid initial release followed by a steady but slightly declining release over a time period of 2 to 11 weeks. The results were supportive of mesoporous carbons such as Carboxen 1012 being suitable for drug loading and release.
Finding a Spiritual Home: A Pilot Study on the Effects of a Spirituality Retreat and Loneliness among Urban Homeless Adults  [PDF]
Joseph R. Ferrari, Thomas Drexler, Jordan Skarr
Psychology (PSYCH) , 2015, DOI: 10.4236/psych.2015.63020
Abstract: Social agencies and services exist in urban settings for the physical needs of homeless citizens. However, there exist few if any programs that feed the spiritual needs of the homeless. In the present study, 35 women and 23 men (55.9% African-American) competed short, reliable and valid self-report measures on their levels of loneliness and addiction before and then again 6-month post a weekend religious retreat. Results indicate that over time, participants on the retreat reported significant decreases in loneliness. Women reported significantly higher rates of loneliness at baseline and again at 6-month follow-up, compared to men. It seems offering a group-based spiritual retreat may impact the lives of homeless.
Using Sports Wagering Markets to Evaluate and Compare Team Winning Streaks in Sports  [PDF]
R. Alan Bowman, Thomas Ashman, James Lambrinos
American Journal of Operations Research (AJOR) , 2015, DOI: 10.4236/ajor.2015.55029
Abstract: Point spreads and money lines from sports wagering markets are used to evaluate the impressiveness of team streaks. Sports wagering data have previously been useful in assessing competitive balance in sports. Our approach was motivated by the amount of media scrutiny that accompanied the winning streak of the NBA’s Miami Heat and the point streak of the NHL’s Chicago Blackhawks which occurred simultaneously for the most part in 2013. The topic came to the forefront again with the 2014-2015 winning streak of the Atlanta Hawks. Three streaks are highlighted in our paper. The length of the streaks, the quality of the competition, injuries, and a variety of other factors were mentioned in the media but the discussion was limited to subjective opinions as no way of properly weighing relative influence of the factors was identified. Wagering markets provide an excellent source of information for making these judgments. Several complementary measures are described and the most impressive team streaks within and across professional baseball, basketball, football, and ice hockey are identified.
Polycyclic Aromatic Hydrocarbon Molecule-Surface Binding Energies in Site Specific Graphene Bilayer Nanopores: A Puzzle-ene Force Field Calculation  [PDF]
Thomas R. Rybolt, Claire B. Black
Graphene (Graphene) , 2017, DOI: 10.4236/graphene.2017.63006
Abstract: Two-dimensional molecular recognition studies of the six polyaromatic hydro-carbons that can be formed from the combination of four benzene rings: tetracene, pyrene, 1,2-benzanthracene, 3,4-benzphenanthrene, triphenylene, and chrysene were explored for each of these six molecules interacting with six different graphene layer site-specific nanopores. Computational studies were done for the gas phase adsorption on single layer graphene, bilayer graphene, and six molecule-specific graphene bilayer nanopores. Molecular mechanics MM2 parameters have been shown previously to provide good comparisons to experimental adsorption energies for aromatic hydrocarbons adsorption on graphitic surfaces. These binding energies are dominated by van der Waals forces. Just as a jigsaw puzzle hole can accommodate only a specific piece, two-dimensional shape specific sites were created in the top layer of a graphene bilayer to match each one of the six adsorbate molecules. The purpose of this study was to examine the molecular recognition possibilities of site specific adsorption in these simple two-dimensional nanopores based on dispersion forces and molecular shape. For example, triphenylene has a calculated surface binding energy of 24.5 kcal/mol on the graphene bilayer and 30.2 kcal/mol in its own site specific pore. The interaction energy of this molecule in the other five sites ranged from 17.6 to 23.8 kcal/mol. All the molecules tetracene, pyrene, 1,2-benzanthracene, triphenylene and chrysene had higher binding energies in their matched molecule bilayer sites than on either single or double layer graphene. In addition, each one of these five molecules had a stronger binding in their own shape specific (puzzle-ene) site than any of the other molecular sites. The results suggest that two-dimensional molecular recognition based on shape specific pores may allow selectivity useful for applications such as sensors, separations, nanofabrication, or information storage.
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