An iterative procedure to obtain inverse response functions for thick-target correction of measured charged-particle spectra

A new method for correcting charged-particle spectra for thick target effects is described. Starting with a trial function, inverse response functions are found by an iterative procedure. The variances corresponding to the measured spectrum are treated similiarly and in parallel. Oscillations of the solution are avoided by rebinning the data to finer bins during a correction iteration and back to the original or wider binning after each iteration. This thick-target correction method has been used for data obtained with the MEDLEY facility at the The Svedberg Laboratory, Uppsala, Sweden, and is here presented in detail and demonstrated for two test cases.Comment: 14 pages, 8 figures, submitted to NIM

Tutorial on Neutron Physics in Dosimetry

Almost since the time of the discovery of the neutron more than 70 years ago, efforts have been made to understand the effects of neutron radiation on tissue and, eventually, to use neutrons for cancer treatment. In contrast to charged particle or photon radiations which directly lead to release of electrons, neutrons interact with the nucleus and induce emission of several different types of charged particles such as protons, alpha particles or heavier ions. Therefore, a fundamental understanding of the neutron-nucleus interaction is necessary for dose calculations and treatment planning with the needed accuracy. We will discuss the concepts of dose and kerma, neutron-nucleus interactions and have a brief look at nuclear data needs and experimental facilities and set-ups where such data are measured.Comment: Invited talk at the 11th Neutron and Ion Dosimetry Symposium NEUDOS-11, October 11-16, 2009, Cape Town, South Africa. 14 pages, 8 figures; submitted to Radiation Measurement

Women's Participation In Pineapple Farming In Muang District, Lampang Province, Thailand

The main purpose of this study was to determine women's level of participation in pineapple farming at Sa- Dej subdistrict in Lampang Province,Thailand. The specific objectives were:( 1) to determine women's level of participation in terms of number of hours spent on specific farm practice activities; ( 2) to determine the differential participation of women in pineapple f arming in terms of the operation they undertake in relation to their husbands; (3) to determine the relations hip between the level of participation of women in pineapple farming and some selected variables postulated by t he resource,family development and expectancy theories; ( 4) to determine the significant variables i

Theravada Buddhismus aus feministischer Perspektive

1. Die Lehre des Buddhismus ist die Lehre von Ursache und Wirkung. Buddha sagt:"Wer das bedingte Entstehen versteht, versteht Dharma, wer den Dharma versteht, versteht das bedingte Entstehen". Dharma ist die Lehre des Buddha. Dharma bedeutet "Wahrheit", "Gesetzmäßigkeit", "Naturgesetzt". Die gesamte Lehre von Buddha handelt von Menschen, von uns und von der Natur. Buddha hat ein andermal gesagt: "Die Lehre über das Entstehen in Abhängigkeit ist sehr tiefgründig und subtil". Nur mit dem Intellekt können wir es nicht "verstehen." Wörter sind leider nur ein lineares intellektuelles Mittel, was begrenzt ist...

Trunk motion visual feedback during walking improves dynamic balance in older adults: Assessor blinded randomized controlled trial.

BACKGROUND: Virtual reality and augmented feedback have become more prevalent as training methods to improve balance. Few reports exist on the benefits of providing trunk motion visual feedback (VFB) during treadmill walking, and most of those reports only describe within session changes. RESEARCH QUESTION: To determine whether trunk motion VFB treadmill walking would improve over-ground balance for older adults with self-reported balance problems. METHODS: 40 adults (75.8 years (SD 6.5)) with self-reported balance difficulties or a history of falling were randomized to a control or experimental group. Everyone walked on a treadmill at a comfortable speed 3×/week for 4 weeks in 2 min bouts separated by a seated rest. The control group was instructed to look at a stationary bulls-eye target while the experimental group also saw a moving cursor superimposed on the stationary bulls-eye that represented VFB of their walking trunk motion. The experimental group was instructed to keep the cursor in the center of the bulls-eye. Somatosensory (monofilaments and joint position testing) and vestibular function (canal specific clinical head impulses) was evaluated prior to intervention. Balance and mobility were tested before and after the intervention using Berg Balance Test, BESTest, mini-BESTest, and Six Minute Walk. RESULTS: There were no significant differences between groups before the intervention. The experimental group significantly improved on the BESTest (p = 0.031) and the mini-BEST (p = 0.019). The control group did not improve significantly on any measure. Individuals with more profound sensory impairments had a larger improvement on dynamic balance subtests of the BESTest. SIGNIFICANCE: Older adults with self-reported balance problems improve their dynamic balance after training using trunk motion VFB treadmill walking. Individuals with worse sensory function may benefit more from trunk motion VFB during walking than individuals with intact sensory function

http://zoobank.org/urn:lsid:zoobank.org:pub:050856B0-8C7A-4099-9197-3040789B5112

www.mapress.com/zootaxa