The Evolution Of The Tap Dance

Evolution deals with the development of a certain thing, taking for granted that it originated from other pre-existing types. That is to say, the tap dance has existed in other forms which will be presented and discussed. The tap dance has not come into its own in its present form, there have been a series of other dances which have contributed to the formation of the present Tap Dance. Dancing is defined as rhythmical movement of the body or parts of the body, usually in accord with music. The tap dance conforms with this definition but to be more specific one can say that Tap dancing is a step dance, tapped out audibly with the feet, toes, or heels. It Is a series of complicated rhythms formed by manipulations of the feet. The purpose of treating the evolution of the tap dance is to prove conclusively that Tap Dancing sprang\u27s from other dances and to leave a written record of this for use in educational fields. Since the Tap Dance is a part of education, a written history is necessary for research, planning future dances, and for general information. The need for such a study is great, as there is little or no written history of the Tap Dance. It is needed as a background for modern dancing; a source of research and of general Information, hay subject worth consideration should have a definite written history

A study of the problem of designing airplanes with satisfactory inherent damping of the dutch roll oscillation

Considerable interest has recently been shown in means of obtaining satisfactory stability of the dutch roll oscillation for modern high-performance airplanes without resort to complicated artificial stabilizing devices. One approach to this problem is to lay out the airplane in the earliest stages of design so that it will have the greatest practicable inherent stability of the lateral oscillation. The present report presents some preliminary results of a theoretical analysis to determine the design features that appear most promising in providing adequate inherent stability. These preliminary results cover the case of fighter airplanes at subsonic speeds. The investigation indicated that it is possible to design fighter airplanes to have substantially better inherent stability than most current designs. Since the use of low-aspect-ratio swept-back wings is largely responsible for poor dutch roll stability, it is important to design the airplane with the maximum aspect ratio and minimum sweep that will permit attainment of the desired performance. The radius of gyration in roll should be kept as low as possible and the nose-up inclination of the principal longitudinal axis of inertia should be made as great as practicable. (author

Book Reviews

FEDERAL JUDGES: THE APPOINTING PROCESS. By Harold W. Chase. Minneapolis: University of Minnesota Press. 1972. Pp. xiii, 240. CORPORATE LIB: WOMEN\u27S CHALLENGE TO MANAGEMENT. Edited by Eli Ginzberg and Alice M. Yohalem. Baltimore: Johns Hopkins University Press, 1973. Pp. x, 153. URBAN JUSTICE: LAW AND\u27 ORDER IN AMERICAN CITIES. By Herbert Jacob. Englewood Cliffs: Prentice-Hall, 1973. Pp. viii, 145. THE CONSCIENCE OF A LAWYER. By David Mellinkoff. St. Paul: West Publishing Company, 1973. Pp. x, 304

Decrypting the Link Between Elliptic Primes and Twin Primes

From Caesar’s cipher to Germany’s enigma machine to modern day cryptosytems, cryptography spans throughout history. Methods of encryption have evolved over hundreds of years and continue to evolve as computational efficiency increases. Over 2.5 quintillion bytes of data are generated per day through online networks such as banking, shopping, and social media. More than 90% of the total data in the world has been generated in the past two years, thereby requiring more sophisticated cybersecurity systems and an increasing demand for research in the field of cryptography. A curve of the form y2 = x3 + Ax + B, where A and B are constants, is what is known as an elliptic curve, which have become increasingly prevalent in modern cryptosystems. Our research focuses on the notion of elliptic primes, some of their properties, as well as some of their applications in cryptography. We also examine the primes that are both an elliptic prime and a twin prime

Randomised trial of glutamine and selenium supplemented parenteral nutrition for critically ill patients

Background: Mortality rates in the Intensive Care Unit and subsequent hospital mortality rates in the UK remain high. Infections in Intensive Care are associated with a 2–3 times increased risk of death. It is thought that under conditions of severe metabolic stress glutamine becomes "conditionally essential". Selenium is an essential trace element that has antioxidant and anti-inflammatory properties. Approximately 23% of patients in Intensive Care require parenteral nutrition and glutamine and selenium are either absent or present in low amounts. Both glutamine and selenium have the potential to influence the immune system through independent biochemical pathways. Systematic reviews suggest that supplementing parenteral nutrition in critical illness with glutamine or selenium may reduce infections and mortality. Pilot data has shown that more than 50% of participants developed infections, typically resistant organisms. We are powered to show definitively whether supplementation of PN with either glutamine or selenium is effective at reducing new infections in critically ill patients. Methods/design: 2 × 2 factorial, pragmatic, multicentre, double-blind, randomised controlled trial. The trial has an enrolment target of 500 patients. Inclusion criteria include: expected to be in critical care for at least 48 hours, aged 16 years or over, patients who require parenteral nutrition and are expected to have at least half their daily nutritional requirements given by that route. Allocation is to one of four iso-caloric, iso-nitrogenous groups: glutamine, selenium, both glutamine & selenium or no additional glutamine or selenium. Trial supplementation is given for up to seven days on the Intensive Care Unit and subsequent wards if practicable. The primary outcomes are episodes of infection in the 14 days after starting trial nutrition and mortality. Secondary outcomes include antibiotic usage, length of hospital stay, quality of life and cost-effectiveness. Discussion: To date more than 285 patients have been recruited to the trial from 10 sites in Scotland. Recruitment is due to finish in August 2008 with a further six months follow up. We expect to report the results of the trial in summer 2009. Trial registration: This trial is registered with the International Standard Randomised Controlled Trial Number system. ISRCTN87144826Not peer reviewedPublisher PD

"An Impediment to Living Life": Why and How Should We Measure Stiffness in Polymyalgia Rheumatica?

Objectives: To explore patients’ concepts of stiffness in polymyalgia rheumatica (PMR), and how they think stiffness should be measured. Methods: Eight focus groups were held at three centres involving 50 patients with current/previous PMR. Each group had at least one facilitator and one rapporteur making field notes. An interview schedule was used to stimulate discussion. Interviews were recorded, transcribed and analysed using an inductive thematic approach. Results: Major themes identified were: symptoms: pain, stiffness and fatigue; functional impact; impact on daily schedule; and approaches to measurement. The common subtheme for the experience of stiffness was “difficulty in moving”, and usually considered as distinct from the experience of pain, albeit with a variable overlap. Some participants felt stiffness was the “overwhelming” symptom, in that it prevented them carrying out “fundamental activities” and “generally living life”. Diurnal variation in stiffness was generally described in relation to the daily schedule but was not the same as stiffness severity. Some participants suggested measuring stiffness using a numeric rating scale or a Likert scale, while others felt that it was more relevant and straightforward to measure difficulty in performing everyday activities rather than about stiffness itself. Conclusions: A conceptual model of stiffness in PMR is presented where stiffness is an important part of the patient experience and impacts on their ability to live their lives. Stiffness is closely related to function and often regarded as interchangeable with pain. From the patients’ perspective, visual analogue scales measuring pain and stiffness were not the most useful method for reporting stiffness; participants preferred numerical rating scales, or assessments of function to reflect how stiffness impacts on their daily lives. Assessing function may be a pragmatic solution to difficulties in quantifying stiffness

Short-Term Trends in Bastardy in Taiwan

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/68002/2/10.1177_036319908000500303.pd