Title: Comparison of selected parameters when skiing and snowboarding. Objectives: The aim of this work is to compare pulse rate and functioning speed while skiing and snowboarding in the slalom track. Methods: Statistical indicators used to calculate BMI (body mass index), pulse rate measuring using the Polar brand sport tester, the stopwatches to time the functioning speed, statistical methods to calculate the arithmetic average. Results: According to the results the hypothesis H1 was confirmed, so the functioning speed while skiing will be shorter than while snowboarding in the slalom track. In second hypothesis H2, the fact that the volume of strain while snowboarding is higher than while skiing in the slalom track did not confirm. Key Words: skiing, snowboarding, pulse rate, speed, slalom track

Context: Sudden Infant Death Syndrome (SIDS) is a phenomenon in which new-born-infants die, often during sleeping, and no cause of death is identified after the autopsy and examination. Assumptions can be made in order to understand what happened to the infant, e.g. heart failures and insufficient breathing rate due to the position of the infant, although deeper studies are hard to be performed, since recording real-cases of sudden infant death on camera is not so trivial. Objectives: Our main objective with the work hereby presented is to perform a study on practical issues that may arise when one is contemplating to build a mobile application for monitoring the heart rate of individuals. These issues may include the levels of accuracy of heart rate measurements that can be retrieved by the current technology, best room conditions for the application to work and positioning of the device in respect to the subject under monitoring. Our secondary objective with this work is to present a heart rate monitor prototype application at a conceptual level. Methods: We conducted a literature review and an analysis of the current available technology, approaches and applications for smart-phones. We conducted experiments on a controlled environment by taking heart rate measurements and comparing results obtained from one smart phone application with results obtained with one standard electrocardiogram tool. After gathering the outputs of the experiments, we analyzed the patterns with the ultimate goal to identify the best set of parameters for the application to work. Results: Our main achievements were obtained through the data that we collected. Although related this work with SIDS, we collected data from adults. The procedures for obtaining the Heart Rate with the application analyze the skin of an individual and, thus, it does not matter if it is an infant or adult. We identified relevant parameters that affect directly the performance of the application, leading it to malfunction. Finally, we proposed a prototype of a mobile heart rate monitoring, that we named The Mobile Heart Rate Monitoring System (MHRMS) at a conceptual level, adding-up functionality to the existing technology and also outlining the best conditions and positioning for it to work correctly. Conclusions: The main conclusion that we reached is that it is reasonable to make use of the current technology that are available in today’s smart phones for having a trustworthy heart rate monitoring tool.

No / Assessing the pulse is a common procedure and an important aspect of many nursing interventions; it should always be done with care and reassessed as needed. Assessment should always be taken seriously, with any deviations from the norm reported to a senior clinician, and pulse rate, rhythm and strength must always be documented. Pulses indicate numerous patient characteristics including the degree of relaxation, regularity of cardiac contractions and sufficiency of cardiac output. This article considers the relevant anatomy, physiology and practice of pulse assessment and recording.

No description available.

The electro-optic technique of measuring the cardiovascular pulse wave known as photoplethysmography (PPG) is clinically utilised for noninvasive characterisation of physiological components by dynamic monitoring of tissue optical absorption. There has been a resurgence of interest in this technique in recent years, driven by the demand for a low cost, compact, simple and portable technology for primary care and community-based clinical settings, and the advancement of computer-based pulse wave analysis techniques. PPG signal provides a means of determining cardiovascular properties during the cardiac cycle and changes with ageing and disease. This thesis focuses on the photoplethysmographic signal for cardiovascular assessment. The contour of the PPG pulse wave is influenced by vascular ageing. Contour analysis of the PPG pulse wave provides a rapid means of assessing vascular tone and arterial stiffness. In this thesis, the parameters extracted from the PPG pulse wave are examined in young adults. The results indicate that the contour parameters of the PPG pulse wave could provide a simple and noninvasive means to study the characteristic change relating to arterial stiffness. The pulsatile component of the PPG signal is due to the pumping action of the heart, and thus could reveal the circulation changes of a specific vascular bed. Heart rate variability (HRV) represents one of the most promising quantitative markers of cardiovascular control. Calculation of HRV from the peripheral pulse wave using PPG, called pulse rate variability (PRV), is investigated. The current work has confirmed that the PPG signal could provide basic information about heart rate (HR) and its variability, and highly suggests a good alternative to understanding dynamics pertaining to the autonomic nervous system (ANS) without the use of an electrocardiogram (ECG) device. Hence, PPG measurement has the potential to be readily accepted in ambulatory cardiac monitoring due to its simplicity and comfort. Noncontact PPG (NPPG) is introduced to overcome the current limitations of contact PPG. As a contactless device, NPPG is especially attractive for physiological monitoring in ambulatory units, NICUs, or trauma centres, where attaching electrodes is either inconvenient or unfeasible. In this research, a prototype for noncontact reflection PPG (NRPPG) with a vertical cavity surface emitting laser (VCSEL) as a light source and a high-speed PiN photodiode as a photodetector is developed. The results from physiological experiments suggest that NRPPG is reliable to extract clinically useful information about cardiac condition and function. In summary, recent evidence demonstrates that PPG as a simple noninvasive measurement offers a fruitful avenue for noninvasive cardiovascular monitoring. Key words: Photoplethysmography (PPG), Cardiovascular assessment, Pulse wave contour analysis, Arterial stiffness, Heart rate (HR), Heart rate variability (HRV), Pulse rate variability (PRV), Autonomic nervous system (ANS), Electrocardiogram (ECG).

Das Ziel der vorliegenden Arbeit bestand in der Integration einer Technologie zur Erzeugung zeitlich alternierender (gepulster) Gasströme auf dem Gebiet der Laserfügetechnik. Für die technische Realisierung implizierte dies spezifische Anpassungen der drei Systemkernelemente (Stelleinheit, Messstrecke, Regelung) bzw. eine vollständige Neukonzeption des Technologieaufbaus. Die somit dem Anwender zur Verfügung stehenden neuen Parameter ermöglichten eine positive Beeinflussung des Fügeprozesses bzw. der Schweißergebnisse. Über die zeitliche Steuerung des Gasvolumenstroms in Korrespondenz zum Laserstrahlschweißprozess gelang es, mit Schutzgaspulsen eine Krafteinwirkung auf die Schmelze hervorzurufen und dadurch eine Verbesserung in Hinblick auf die Einschweißcharakteristik von lasergeschweißten Nähten zu realisieren. / The present study focuses on the integration of a technology for generating temporally alternating (pulsed) gas flows in the field of laser welding. The technical realization required the specific adaptation of the three core elements of the system (valve, section of measurements, control system) or rather a completely new concept of the technological setup. The new parameters allow for a positive influence on the joining process and on the results of welding, respectively. By means of temporal control of the gas volume flow in combination with a laser welding process, it was possible to produce a force effect on the molten.