3-D FEM analysis of the effects of SPT head dimensions on recording in discrete and continuous media

Due to the considerable increase of magnetic recording density, the deviation of the head from the centerline of the track becomes a serious problem for the cross-track interference. In this paper, a three-dimensional read/write simulation system was used to investigate the effect of the width of the write head on the behavior of the flux and magnetization for continuous track medium and discrete track medium. It is shown that the magnetization in a neighboring track of the discrete track medium is smaller than that of the continuous track medium. The output of the read head using the discrete track medium is larger than that of the continuous track medium when a suitable read head width is chosen so that the cross talk is negligible.</p

Green odor attenuates a cold pressor test-induced cardiovascular response in healthy adults

<p>Abstract</p> <p>Background</p> <p>Green odor, a mixture of equal amounts of 2<it>E</it>-hexenal (leaf aldehyde) and 3Z-hexenol (leaf alcohol) has been demonstrated to have an anti-stress effect in rats. This study investigated whether or not green odor also has an anti-stress effect in humans.</p> <p>Methods</p> <p>Changes in blood pressure, heart rate, and the skin temperature of a fingertip were observed after presenting green odor at a concentration of 0.03% or vehicle via inhalation through the nose for 10 min to eight healthy normotensive adults. We also assessed the pleasantness of green odor and its effect on mood states via assessment with the Profile of Mood States (POMS) questionnaire. Cardiovascular response to green odor and the vehicle were compared among 11 additional healthy adults by use of the cold pressor test.</p> <p>Results</p> <p>Of 19 subjects, 15 (79%) reported that the green odor was pleasant. Green odor had no effect on blood pressure, heart rate, skin temperature, or POMS score under non-stressful conditions. In the second experiment, green odor attenuated cold pressor test-induced increases in systolic and diastolic blood pressure and facilitated the recovery of skin temperature.</p> <p>Conclusion</p> <p>These findings suggest that green odor has an anti-stress effect in healthy humans.</p

3-D FEM Analysis of SPT Head Dimension on Recording Characteristics

In this paper, the effect of the width of write head on behavior of flux and magnetization in the case of continuous track media and discrete track media is investigated using 3-D read/write simulation system. The effect of width of read head on the output is also examined.</p

3-D FEM analysis of the effects of SPT head dimensions on recording in discrete and continuous media

Due to the considerable increase of magnetic recording density, the deviation of the head from the centerline of the track becomes a serious problem for the cross-track interference. In this paper, a three-dimensional read/write simulation system was used to investigate the effect of the width of the write head on the behavior of the flux and magnetization for continuous track medium and discrete track medium. It is shown that the magnetization in a neighboring track of the discrete track medium is smaller than that of the continuous track medium. The output of the read head using the discrete track medium is larger than that of the continuous track medium when a suitable read head width is chosen so that the cross talk is negligible.</p

Regulation of nursing professionals in Cambodia: Strategies to overcome underpinning challenges

Aims: To elucidate i) the challenges and constraints in the development and implementation of the regulatory framework for nursing professionals in Cambodia, and ii) the specific strategies adopted to address the challenges experienced in Cambodia.Introduction: The health workforce will be critical to achieving the health-related and wider Sustainable Development Goals in the years up to 2030. Background: In 2006, the countries of the Association of Southeast Asia Nations signed a Mutual Recognition Arrangement in relation to nursing services in the region with the main aim of facilitating the mobility of nursing professionals between countries. To ensure the competency of the health workforce and the quality and safety of health services, member states are required to establish an appropriate regulatory framework. Methods: This is a descriptive qualitative study. Eighteen key informant interviews were conducted in Cambodia in 2018. Walt & Gilson’s policy analysis model was applied to organise and synthesise the data. Findings: Major challenges were identified such as conceptual and cultural issues, limited capacity of Cambodian stakeholders, and an unstandardized system with limited coordination. Discussion: In Cambodia, the nursing regulatory environment has expanded greatly over the last decade. Strategies adopted were “political leadership”, optimal utilization of “outsider’s capacity”, strengthening “insider’s capacity”, and “dedicated consultation and collaboration and consensus building” involving all players. Implications for nursing and health policies: Policy makers in similar resource-limited countries could apply and adapt similar strategic efforts when formulating and implementing health policies, legislation and regulations. “Outsiders”, in this case, represented by development partners can play a vital role in the process, but should not be leading the charge. They should be aligned with national priority to support recipient countries. It is imperative for these countries and development partners to invest in increasing the quantity and quality of nursing leaders who can develop and advance regulatory functions

Accelerating Relaxation Algorithms for Circuit Simulation Using Waveform Newton, Iterative Step Size Refinement, and Parallel Techniques Abstract

A high speed MOS digital circuit simulation program PNAP-1 (Parallel Network Analysis Program) implemented on a special-purpose parallel computer system LINKS-1 is described. In LINKS-1, 64 node computers are linked radially to a root computer through a very fast memory swapping unit. The task of the root computer is to control node computer and to store waveforms. Each node computer solves assigned subcircuit with standard circuit simulation techniques. PNAP-1 adopts a block-type waveform relaxation technique as a vehicle of the parallel computation of required waveforms. The slow convergence or more serious non-convergence problem inherent to relaxation-based methods is alleviated by analyzing tightly coupled portions in direct manner in conjunction with exploiting the overall quasi-unidirectional property of MOS digital circuits. A number of experimental results show that PNAP-1 can achieve a substantial speed improvement in the cost-effective analysis of VLSI circuits

Papillary Muscle Dysfunction Attenuates Ischemic Mitral Regurgitation in Patients With Localized Basal Inferior Left Ventricular Remodeling Insights From Tissue Doppler Strain Imaging

ObjectivesThe purpose of this research was to test whether papillary muscle (PM) dysfunction attenuates ischemic mitral regurgitation (MR) in patients with left ventricular (LV) remodeling of a similar location and extent.BackgroundPapillary muscle dysfunction could attenuate tethering and MR because of PM elongation. However, variability in the associated LV remodeling, which exaggerates tethering, can influence the relationship between PM dysfunction and MR.MethodsIn 40 patients with a previous inferior myocardial infarction but without other lesions, the LV volume, sphericity, PM tethering distance, PM longitudinal systolic strain, and MR fraction were quantified by echocardiography. The patients were divided into two groups: group 1 with significant basal inferoposterior LV bulging but without advanced LV bulging involving other territories, therefore with a similar location and extent of LV remodeling, and group 2 without significant LV bulging.ResultsThe medial PM tethering distance was significantly correlated with the %MR fraction (r2= 0.64, p < 0.01), and multiple regression analysis identified an increase in the tethering distance as the only independent determinant of the MR fraction in all subjects and also in group 1. The PM longitudinal systolic strain had no significant relationships with MR fraction in all subjects with variable degrees of LV remodeling, but it had a significant inverse correlation with the MR fraction (r2= 0.33, p < 0.01) in group 1 with LV remodeling of a similar location and extent, indicating that PM dysfunction is associated with less MR.ConclusionsPapillary muscle dysfunction, reducing its longitudinal contraction to induce leaflet tethering, attenuates ischemic MR in patients with basal inferior LV remodeling