NEIL CHARNESS, MICHAEL TUFFIASH, RALF KRAMPE, EYAL REINGOLD and EKATERINAVASYUKOVA, The Role of Deliberate Practice in Chess Expertise, Max Planck Institute for Human Development and Education, Berlin, Germany; Florida State University, USA, University of Toronto, Canada, Moscow State University, Russia, The Value of Stealth in the Game of Chess, Towards the Unification of Intuitive and Formal Game Concepts with Applications to Computer Chess, ESRC Centre, University of Nottingham, England UK and Carnegie Mellon University USA, Tuning evaluation functions by maximizing concordance, University of Alberta, Edmonton, Alberta, Canada, Dimitrios Grammenos , Anthony Savidis , Constantine Stephanidis, UA-Chess: A Universally Accessible Board Game, Institute of Computer Science, Heraklion, Crete, Greece, A framework for virtual community business success: the case of the Internet Chess Club, Alan H. Karp, Ren Wu, Kay-Yut Chen, Alex Zhang, A Game Tree Strategy for Automated Negotiation, A New Approach to Draw Detection by Move Repetition in Computer Chess Programming, D.B. On the Fragility of Skilled Performance: What Governs Choking Under Pressure? Conclusion

In conclusion, evidence suggests that the WBB can be used as a reliable and valid tool for assessing standing balance. The mean of measure values from 3 trials were used for analysis.

Accuracy tended to increase significantly and substantially, and errors of inference tended to drop significantly and substantially once extreme scores were removed. Our findings support the feasibility of adopting wearable sensors in the detection of motor anomalies in early, untreated, PD patients. The Wii Balance Board (WBB) has been proposed as an inexpensive alternative to laboratory-grade Force Plates (FP) for the instrumented assessment of balance. The experimental group also showed a significant improvement in confidence (change, 16.48 ± 16.21 vs 3.05 ± 13.53, P = 0.047) and maximal excursion of center of pressure in forward (change, 0.86 ± 1.89 cm vs 0.17 ± 0.26 cm, P = 0.048), left (change, 0.88 ± 2.63 cm vs 0.07 ± 0.48 cm, P = 0.010), and right (change, 1.63 ± 2.82 cm vs 0.05 ± 0.17 cm, P = 0.046) directions of limits of stability compared to the control group. We concluded that, when individuals with PD undergo cognitive challenges, they behave as if they were with eyes closed regarding balance changes. The sample was composed of 23 women, 6 men, age 24.2±6.3 years, weight 60.7±6.3kg and height 1.64±4.2m. We have investigated using a force plate under standing subjects, which records movement of the center of pressure (CoP) to quantify LID over a levodopa (L-dopa) cycle. Frequent falling is caused by postural instability, which is not reversible with dopaminergic therapy. Seventy, Access scientific knowledge from anywhere. The measures with robust psychometric estimation with acceptable properties were the (1) Mini-Balance Evaluation Systems Test (Mini-BEST), (2) Berg Balance Scale, (3) Timed Up and Go test, (4) Falls Efficacy Scale International, and (5) Activities-Specific Balance Confidence scale. The purpose of this investigation was to determine the effects of dual task performance on postural instability in subjects with idiopathic Parkinson's disease (PD) compared with healthy elderly people. Pawn takes queen: The strategic gameboard in entrepreneurial firms, Steinitz and the Inception of Modern Chess, Henk van Haeringen, H. Jaap Van Den Herik, Peter Smet, Greg Calbert, Jason Scholz, Don Gossink, Hing-Wah Kwok, Michael Webb, The effects of material, tempo and search depth on win-loss ratios in chess. Aims We observed the same significant differences between the HS and MS populations across the two measurement systems. A program based on core stability in comparison with non-specific exercise benefits dynamic balance and confidence and increases center of mass excursion in patients with Parkinson’s disease. creation of strategies for quality of life and for the care of the elderly population that still presents a high prevalence The results of the vGRF showed high accuracy (r > 0.96 and %RMSE < 6.1% in the mean values), and the stance duration as defined by the vGRF and COP trajectory was equivalent to that of commercial instrumented insoles, which are used as an alternative to the force plates. There is no reason to believe that the situation is different in other social science disciplines. Eighty studies testing 68 outcome measures were reviewed; 43 measures assessed balance, 9 assessed falls risk prediction, and 16 assessed both. The comparative analysis of PC and VJP revealed reliable and valid results for the BTG in comparison to a laboratory-grade force plate. Results: With ascent from 760 to 3100 m the PL increased in the placebo group from median (quartiles) 29.2 (25.8; 38.2) to 31.5 (27.3; 39.3) cm (P < 0.05); in the dexamethasone group the corresponding increase from 28.8 (22.8; 34.5) to 29.9 (25.2; 37.0) cm was not significant (P = 0.10). The Effects of Chess Instruction on Students' Level of FieldDependence/Independence. Background The test-retest reliability for COP path length for each of the testing devices, including a comparison of the WBB and FP data, was examined using intraclass correlation coefficients (ICC), Bland-Altman plots (BAP) and minimum detectable change (MDC).

26 HUMAC Balance Systems in conjunction with 2 force plates, each from the manufacturers Kistler and AMTI, were examined and their properties under static and dynamic conditions were evaluated.

The WBB as shown in Figure 1a can measure the vertical force and COP using four strain gauge load cells located near each of the four corners of the device, as shown in Figure 1b. Patients were evaluated before treatment, after treatment, and at 1-month follow-up. Reliability is a population-specific property, but to the authors' knowledge there has been no study to determine the test-retest reliability of the postural stability measures such as center of pressure (COP) measures in the population of patients with musculoskeletal disorders (MSDs), while their clinical applications have been presented in literature. Inadequate postural control and postural instability is a major problem in PD patients. A total of 172 potential concussive events were verified across 11 athletes (15.6±11; 95% CI: 6.5 to 19.8). Kravtsov, M. A. Snegir', A. G. Snegir' , B. Ten healthy adults played 9 sessions of specific games developed for rehabilitation over a 3-weeks period. The purpose of this study was to evaluate the cross-sectional associations of knee extensor strength, standing balance, and their interaction with physical function. Data sources Validity and reliability were moderate-to-high for all the analyzed features. RESULTS The 2 groups showed significant differences in NRS, K-ODI, balance ability, and FABQ after the interventions (p<0.05), but greater improvements were shown by the experimental group in balance ability and FABQ values. In this multicenter study, 76 PD patients (modified Hoehn and Yahr stages 2.5-3) were randomly assigned to receive either in-home VR telerehabilitation (n = 38) or in-clinic SIBT (n = 38) in 21 sessions of 50 minutes each, 3 days/week for 7 consecutive weeks. The frequency of falling was correlated only to the severity of one parkinsonian symptom, postural instability. In: Fahn S, Marsden CD, Calne DB, and Goldstein Frequent fallers and postural instability were not changed by dopaminergic therapy. However, prior to its use in long-term monitoring, it is crucial to understand natural daily PC variation. Other factors significantly associated with fall status included increased Timed Up & Go times and increased PD duration. Fallers had significantly more prolonged and advanced PD compared with Non-fallers (p=0.001 and p<0.001, respectively).

Which Rectangular Chessboards Have a Knight's Tour? Factor analysis of parkinsonian characteristics yielded three groups, with tremor being an independent symptom. From this, The purpose of this study was to compare measures of persistence of postural sway (through detrended fluctuation analysis) using WBB and a force platform (FP). It is concluded that the elderly have difficulty in In such contest, different technologies have been introduced to objectively measure human motor abilities and capabilities in the medical field [6], [7].

Standing balance performance was measured by the center of pressure displacement during quiet standing on a balance board. The proposed system has the potential to provide accurate segment angles and peak GRF at low cost, but does not match the accuracy of the multi-camera system and force platform, in part because of the Wii Balance Board's variable sampling rate. Except the UPDRS-ME and Mini-BESTest, the responsiveness of the other four measures has yet to be established. Clinical investigation of levodopa-induced dyskinesia (LID) in Parkinson's disease (PD) is limited because of lack of objective measurements and no consensus on use of a standard measuring tool. Although modern video games are substantially different from their predecessors, understanding of the evolution is an important basis for designing (not only) serious games. Les révolutions du XVIIIe siècle, Murray Campbell,∗ A. Joseph Hoane Jr., Feng-hsiung Hsu, IBM T.J. Watson Research Center, University Avenue, Palo Alto, USA, Global Threats in Combinatorial Games: A Computation Model with Applications to Chess Endgames, Higher nimbers in pawn endgames on large chessboards, University of Liverpool UK; Edith Cowan University Australia. Methods:

Stockholm, Sweden; Eötvös Lorand University Budapest, Hungary; Princeton University, USA; Beograd, Yugoslavia. Gathering postural sway measures outside of controlled environments is desirable for reaching populations with limited mobility. Aim: These findings confirm that falls are a common problem among patients with advanced PD and suggest easily measurable features that may be used to prospectively identify those PD patients with the greatest risk of falls. Multivariable regression analysis confirmed a significant increase in PL with higher altitude (coefficient 1.6, 95% CI 0.2 to 3.1, P = 0.031) but no effect of dexamethasone was shown (coefficient -0.2, 95% CI -0.4 to 3.6, P = 0.925), even when controlled for several potential confounders.

Results The PD patients were tested in the morning during the ON phase of their pharmacotheraphy cycle (2-3 hours after taking medication). comparing a centre of pressure variable from the WBB with a summary score from the force platform), 4) data acquisition platform (studies using Apple iOS reported predominantly moderate validity), and 5) low sample size. Also, minimal metrically detectable change (MMDC) was calculated to quantify intervention effects. B. Ivnev, Dependence of the Parameters of Visual Evoked Potentials on the Parameters of a Complex Visual Stimulus (Tests on Humans), Donetsk State Medical University, Ukraine, Guided collaborative chess tutoring through game history analysis, Heuristics in Programming of Nondeterministic Games, National and Kapodistrian University of Athens, Greece, Claude Meidinger, Stéphane Robin, Bernard Ruffieux, Investment gambling and coordination through intentions / Jeu de l'investissement et coordination par les intentions, Université Pierre Mendès, Grenoble, France, Laboratoire de Psychologie Cognitive, Université de Provence and CNRS, France.

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