1,448 research outputs found
Validation of the Simple Activity Measurement Instrument (SAM) Using Heart Rate and Pedometry; Simple Activity Measurement Instrument (SAM) for Measuring MVPA in Physical Education
In order to battle obesity in our schools, Physical Education standards are working to become more and more in accordance with the Physical Activity Guidelines set by the U.S. Department of Health and Human Services, and the American College of Sports Medicine. Physical Education teachers would benefit from a tool that measures the amount and type of activity that students are involved in while they are in Physical Education. Many of the instruments that teachers use to assess studentsâ physical activity are too expensive, too difficult and can be time consuming. The purpose of the current study was to test the reliability of a tool developed by Surapiboonchai, Fumey, Reardon, Eldridge and Murray known as the Simple Activity Measurement (SAM) instrument. The instrument was used to assess MVPA during Physical Education classes. 40 students, both male and female, were randomly selected to represent the population (grades 9-12) at Moriarty High School. The students that were observed for MPVA wore a Pyle PHRM34 Heart Rate Monitor along with an Omron HJ-112 Premium Pedometer. The intensity of their activity was recorded on scale from 0-10. The SAM instrument was proven to be valid measurement of physical activity and a high predictor of Heart Rate (r = 0.838, ^ = 0.702, p \u3c 0.05) as well as a valid predictor of accelerator use (r = 0.591, r^ = 0.349). The results of the study show that SAM is an economical and easy instrument to use to assess MVPA in Physical Education classes in grades 9-1
Gender Gaps in Math Performance, Perceived Mathematical Ability and College STEM Education: The Role of Parental Occupation
Employment opportunities in occupations related to Science, Technology, Engineering, and Mathematics, the so-called STEM fields, are predicted to continue growing through time. In addition, STEM occupations also enjoy higher wages on average. Despite these advantages, women remain under-represented in STEM college degree completion and occupations. Encouraging women into the STEM fields has become an important policy concern. We use longitudinal data from the Panel Study of Income Dynamics to study gender differences in math achievement and self-perceived math ability and how they may differ by parental occupation type, specifically science related versus non-science related parental occupations. We then study their role on subsequent decision of majoring in a science field in college. Our results corroborate significant gender differences in math test scores and perceived math ability during childhood. Having a parent working in a science related field is associated with a better performance in math but not necessarily higher levels of perceived math ability, given math performance. All three factors, math achievement, perceived math ability, and parental occupation in a science field, are found to be significant predictors of the probability of majoring in science in college. However, estimated effects of higher levels of math achievement are about double for boys than for girls. Estimates of perceived math ability are also slightly larger for boys. In contrast, most of the observed positive effects of having a parent in a science related occupation seem to be concentrated among females. These results suggest a loss in STEM enrollment by otherwise qualified young women and the potential importance that parental role modeling effects or specific human capital parental investments by parents in science occupations could have for encouraging women to major in science fields
REVIEW OF CONCEPT OF PAIN MANAGEMENT IN AYURVEDA
In spite of very advanced researches in Science, Pain still remains the major cause of disability affecting the large number of population in the world. An integrated approach towards Pain Management should possibly answer the grief involved in treating this Symptom of varying degrees. Even Ministry of AYUSH, India has stressed upon this alarming topic and professed its theme as âPain Management through Ayurvedaâ for Second National Ayurveda Day.
In this article, review of the classical text with special references to pain, and its management through Ayurvedic procedures such as Snehan, Swedan, Agnikarma, Jalaukaavcharan, Vedhankarma, Lepankarma & Bastikarma has been discussed in context to their utility in Pain management. Similarly, The role of Madhur-Amla-Lavan Rasa Aushadhi in Pain management due to Dhatukshayjanya Vataprakopa in view of G-PCR bio-signalling of taste and Pain modulation is also incorporated to explain role of palliative medicines
A compositional and technological reassessment of the function of pottersâ marks on Early Bronze Age sherds from Tell el-âAbd, Syria
A highly distinctive feature of the Early Bronze Age ceramic assemblage of the site of Tell el-âAbd in northern Syria is the presence of large numbers of pots that were incised with a diverse range of symbols prior to firing.
Several hypotheses have been proposed to explain the function of such ceramic âpottersâ marksâ. One is that they functioned as a signature or trademark used by potters or workshops to identify their work. Another possibility is
that they were used for quality control or accounting purposes during manufacture. Alternatively, they may have signified vessels intended for specific customers, or the size or contents of the vessels. In the case of the Tell el-âAbd pottersâ marks, distinguishing between these possibilities has proven difficult based upon their macroscopic examination and archaeological context alone. The present research, therefore, attempts to shed further light on the function of the pottersâ marks by studying the clay paste recipes of 33 ceramic samples using scientific methods. Thin section petrography, instrumental geochemistry and scanning electron microscopy have been used to characterise and classify sherds according to their raw materials and manufacturing technology. This has been compared to the type of pottersâ mark and other archaeological information in order to test the hypotheses that the distinctive ceramic markings signified ceramics made at different production centres or distinguished between different artisans operating at the same workshop
A compositional and technological reassessment of the function of potters' marks on Early Bronze Age sherds from Tell el-'Abd, Syria
A highly distinctive feature of the Early Bronze Age ceramic assemblage of the site of Tell el-âAbd in northern Syria is the presence of large numbers of pots that were incised with a diverse range of symbols prior to firing. Several hypotheses have been proposed to explain the function of such ceramic âpottersâ marksâ. One is that they functioned as a signature or trademark used by potters or workshops to identify their work. Another possibility is that they were used for quality control or accounting purposes during manufacture. Alternatively, they may have signified vessels intended for specific customers, or the size or contents of the vessels. In the case of the Tell el-âAbd pottersâ marks, distinguishing between these possibilities has proven difficult based upon their macroscopic examination and archaeological context alone. The present research, therefore, attempts to shed further light on the function of the pottersâ marks by studying the clay paste recipes of 33 ceramic samples using scientific methods. Thin section petrography, instrumental geochemistry and scanning electron microscopy have been used to characterise and classify sherds according to their raw materials and manufacturing technology. This has been compared to the type of pottersâ mark and other archaeological information in order to test the hypotheses that the distinctive ceramic markings signified ceramics made at different production centres or distinguished between different artisans operating at the same workshop
Chitosan gel film bandages: correlating structure, composition, and antimicrobial properties
Chitosan gel films were successfully obtained by evaporation cast from chitosan solutions in aqueous acidic solutions of organic acids (lactic and acetic acid) as gel film bandages, with a range of additives that directly influence film morphology and porosity. We show that the structure and composition of a wide range of 128 thin gel films, is correlated to the antimicrobial properties, their biocompatibility and resistance to biodegradation. Infrared spectroscopy and solid-state 13C nuclear magnetic resonance spectroscopy was used to correlate film molecular structure and composition to good antimicrobial properties against 10 of the most prevalent Gram positive and Gram negative bacteria. Chitosan gel films reduce the number of colonies after 24 h of incubation by factors of âŒ105â107 CFU/mL, compared with controls. For each of these films, the structure and preparation condition has a direct relationship to antimicrobial activity and effectiveness. These gel film bandages also show excellent stability against biodegradation with lysozyme under physiological conditions (5% weight loss over a period of 1 month, 2% in the first week), allowing use during the entire healing process. These chitosan thin films and subsequent derivatives hold potential as low-cost, dissolvable bandages, or second skin, with antimicrobial properties that prohibit the most relevant intrahospital bacteria that infest burn injuries
The autoimmune ecology: An update
Purpose of review The autoimmune ecology refers to the interactions between individuals and their environment leading to a breakdown in immune tolerance and, therefore, to the development of one or more autoimmune diseases in such an individual. Herein, an update is offered on four specific factors associated with autoimmune diseases, namely, Vitamin D, smoking, alcohol and coffee consumption from the perspective of exposome and metabolomics. Recent findings Smoking is associated with an increased risk for most of the autoimmune diseases. Carbamylation of proteins as well as NETosis have emerged as possible new pathophysiological mechanisms for rheumatoid arthritis. Low-to-moderate alcohol consumption seems to decrease the risk of systemic lupus erythematosus and rheumatoid arthritis, and studies of vitamin have suggested a beneficial effect on these conditions. Coffee intake appears to be a risk factor for type 1 diabetes mellitus and rheumatoid arthritis and a protective factor for multiple sclerosis and primary biliary cholangitis. Summary Recent studies support the previously established positive associations between environmental factors and most of the autoimmune diseases. Nevertheless, further studies from the perspective of metabolomics, proteomics and genomics will help to clarify the effect of environment on autoimmune diseases. © Copyright 2018 Wolters Kluwer Health, Inc. All rights reserved
Collaborative Delivery with Energy-Constrained Mobile Robots
We consider the problem of collectively delivering some message from a
specified source to a designated target location in a graph, using multiple
mobile agents. Each agent has a limited energy which constrains the distance it
can move. Hence multiple agents need to collaborate to move the message, each
agent handing over the message to the next agent to carry it forward. Given the
positions of the agents in the graph and their respective budgets, the problem
of finding a feasible movement schedule for the agents can be challenging. We
consider two variants of the problem: in non-returning delivery, the agents can
stop anywhere; whereas in returning delivery, each agent needs to return to its
starting location, a variant which has not been studied before.
We first provide a polynomial-time algorithm for returning delivery on trees,
which is in contrast to the known (weak) NP-hardness of the non-returning
version. In addition, we give resource-augmented algorithms for returning
delivery in general graphs. Finally, we give tight lower bounds on the required
resource augmentation for both variants of the problem. In this sense, our
results close the gap left by previous research.Comment: 19 pages. An extended abstract of this paper was published at the
23rd International Colloquium on Structural Information and Communication
Complexity 2016, SIROCCO'1
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