Practical Amount Of Time Research Articles

A survey of chiropractors’ use of nutrition in private practice

ABSTRACT Objective To survey the private practice use of nutrition by chiropractors with emphasis on recommendations and education. Design A 3-page mail survey was sent to chiropractors practicing in the United States. Results The response rate was within the normal response range, 34% (74 of 217). Of those that responded, 77% were male; the mean number of years since graduation from chiropractic college was 13, with a range from 1-39 years. The average practice time spent on nutrition was 19%. Fifty-three percent of responders felt that their chiropractic college provided them with an adequate understanding in nutrition. Eightyone percent incorporated nutritional counseling, handed out nutritional literature or recommended nutritional supplements. Forty-two percent felt that chiropractors are able to address all nutritional concerns and 21% feel that the services of a nutritional specialist should only be used for second opinion interpretations. Discussion Nutrition is an important factor in the pursuit of optimal health. Most chiropractors in our sample incorporated nutritional services in their practice. The results of this study suggest that a significant amount of practice time is spent on services other than chiropractic adjustments. Approximately half of the chiropractors felt that their chiropractic college provided an adequate understanding in nutrition.

Automatic MRI Database Exploration and Applications

The design of representative models of the human body is of great interest to medical doctors. Qualitative information about the characteristics of the brain is widely available, but due to the volume of information that needs to be analyzed and the complexity of its structure, rarely is there quantification according to a standard model. To address this problem, we propose in this paper an automatic method to retrieve corresponding structures from a database of medical images. This procedure being local and fast, will permit navigation through large databases in a practical amount of time. We present as examples of applications the building of an average volume of interest and preliminary results of classification according to morphology.

A FAST ALGORITHM FOR SOLVING LARGE SCALE MEAN-VARIANCE MODELS BY COMPACT FACTORIZATION OF COVARIANCE MATRICES

A fast al/lorithm for solving large scale MV (mean-variance) portfolio optimization problems is proposed. It is shown that by using T independent dat.a representing the rate of return of the assets, the MV model consisting of n assets can be put into a quadratic program with n + T variables, T linear const.raints and T quadratic terms in the objective function. As a result, the computation t.ime required to solve this problem would increase very mildly as a function of n. This implies that a very large scale MY model can now be solved in a practical amount of time.

Computer Assisted Instruction with Learning Disabled Students: Achievement, Engagement, and other Factors That Influence Achievement

The study compared computer assisted instruction (CAI) and paper-and-pencil instruction (PPI) as means of delivering independent spelling practice in classes for learning disabled (LD) students. Forty-four fifth- and sixth-grade LD students worked for four weeks on CAI or PPI spelling programs. The CAI and PPI programs had identical content and similar activities, but differed in instructional design features based on the capabilities of the two media. Important contextual factors were controlled, including the teacher, the teacher's role, time of day, amount of practice time, and proximity to peers and teachers in the classroom. Significant achievement differences favoring the CAI group were found on the weekly spelling tests and on a retention test. In addition, the CAI group had a significantly higher engagement rate, and engagement was positively correlated with average weekly achievement. Recursive path analysis was used to explore further the hypothesis that improved achievement with CAI is mediated by engagement. The path analysis indicated that approximately 31 percent of the difference in achievement between groups was mediated by engagement and another 22 percent by engagement through number of responses.

Supercomputer requirements for selected disciplines important to aerospace

Speed and memory requirements placed on supercomputers by five different disciplines important to aerospace are discussed and compared with the capabilities of various existing computers and those projected to be available before the end of this century. The disciplines chosen for consideration are turbulence physics, aerodynamics, aerothermodynamics, chemistry, and human vision modeling. Example results for problems illustrative of those currently being solved in each of the disciplines are presented and discussed. Limitations imposed on physical modeling and geometrical complexity by the need to obtain solutions in practical amounts of time are identified. Computational challenges for the future, for which either some or all of the current limitations are removed, are described. Meeting some of the challenges will require computer speeds in excess of exaflop/s (10/sup 18/ flop/s) and memories in excess of petawords (10/sup 15/ words).< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

The influence of selected light intensities on color perception within the color range of natural teeth

A study was undertaken to evaluate the influence of light intensity on the ability to discriminate color differences within the color range of natural teeth. The results show that shade selection is not significantly affected within the range of 75 to 300 fc. Neither the specialty of the dentist nor the amount of time in practice appeared to be a factor in making color discriminations. However, 7 of the 50 dentists serving as subjects were found to be color defective, and a difference was found between their color discrimination abilities and those of normal persons. This suggests that color-defective dentists should obtain assistance when matching tooth shades.

Visuele Terugkoppeling Van Engelse Intonatie;

A description is given of an experiment in which we tried to show that visual feedback is more effective in intonation learning than auditory feedback. The factors in the experiment were feedback mode and practice time. The results showed a significant effect of visual feedback over auditory feedback, whereas amount of practice time doesn't seem to be a major factor. An analysis of learning behaviour of the subjects in the experiment revealed that feedback mode influences learning behaviour: subjects with visual feedback tend to practise more intensively than subjects with auditory feedback. Future research will concentrate on various factors related to intonation learning and the effectiveness of visual feedback, such as the role of age, mothertongue and degree of fluency in the second language.

Practice Time in Prepared Childbirth

Postpartum questionnaires from two populations of women who had had preparation for birth were investigated to determine the amount of practice time of basic techniques that was associated with optimum pain reduction. Results indicated that practice of neuromuscular release for a minimum of 5 minutes a day was associated with less pain during the active phase of labor; practice of breathing techniques for a minimum of 10 minutes a day was associated with less pain during the active und transition phases of labor, and practice of husband and wife together at least occasionally was associated with less pain during transition. Afore extensive practice times did not lead to further pain reduction during labor and birth.