Modelling, Simulation and Data Analysis in Acoustical Problems

Modelling and simulation in acoustics is currently gaining importance. In fact, with the development and improvement of innovative computational techniques and with the growing need for predictive models, an impressive boost has been observed in several research and application areas, such as noise control, indoor acoustics, and industrial applications. This led us to the proposal of a special issue about “Modelling, Simulation and Data Analysis in Acoustical Problems”, as we believe in the importance of these topics in modern acoustics’ studies. In total, 81 papers were submitted and 33 of them were published, with an acceptance rate of 37.5%. According to the number of papers submitted, it can be affirmed that this is a trending topic in the scientific and academic community and this special issue will try to provide a future reference for the research that will be developed in coming years

Telemedicine

Telemedicine is a rapidly evolving field as new technologies are implemented for example for the development of wireless sensors, quality data transmission. Using the Internet applications such as counseling, clinical consultation support and home care monitoring and management are more and more realized, which improves access to high level medical care in underserved areas. The 23 chapters of this book present manifold examples of telemedicine treating both theoretical and practical foundations and application scenarios

High-Performance Accelerometer Based On Asymmetric Gapped Cantilevers For Physiological Acoustic Sensing

Continuous or mobile monitoring of physiological sounds is expected to play important role in the emerging mobile healthcare field. Because of the miniature size, low cost, and easy installation, accelerometer is an excellent choice for continuous physiological acoustic signal monitoring. However, in order to capture the detailed information in the physiological signals for clinical diagnostic purpose, there are more demanding requirements on the sensitivity/noise performance of accelerometers. In this thesis, a unique piezoelectric accelerometer based on the asymmetric gapped cantilever which exhibits significantly improved sensitivity is extensively studied. A meso-scale prototype is developed for capturing the high quality cardio and respiratory sounds on healthy people as well as on heart failure patients. A cascaded gapped cantilever based accelerometer is also explored for low frequency vibration sensing applications such as ballistocardiogram monitoring. Finally, to address the power issues of wireless sensors such as wireless wearable health monitors, a wide band vibration energy harvester based on a folded gapped cantilever is developed and demonstrated on a ceiling air condition unit

THE EFFECT OF ACUPRESSURE ON CONSTIPATION, QUALITY OF LIFE, AND DEPRESSIVE SYMPTOMS IN CANCER PATIENTS WITH CONSTIPATION

Constipation is the most common gastrointestinal complaint in the United States, resulting in about 2 million annual visits to the doctor. The purposes of this dissertation were to: 1) describe four theories of traditional Korean medicine; 2) review mechanisms of acupuncture and moxibustion and develop a conceptual model; 3) review findings from randomized controlled trials that tested the effects of acupressure used for the management of symptoms such nausea, pain, and dyspnea; 4) examine the reliability and validity of the Patient Health Questionnaire-9 (PHQ-9) in heart failure patients with constipation compared to those with gastrointestinal disease; 5) describe how Korean women experienced constipation and how constipation affected the quality of life and the experience of using complementary and alternative medicine for constipation; 6) test the effect of acupressure on constipation and to examine the quality of life and depressive symptoms in cancer patients with constipation. Meridian theory explains that acupressure stimulates meridians, a network of energy pathways in the body to increase the flow of bio-energy. Authors of 48 studies supported that acupressure reduced nausea and vomiting during pregnancy, pain, fatigue, and dyspnea. The Patient Health Questionnaire-9 (PHQ-9) was used to examine the depressive symptoms in cancer patients with constipation, but has not been tested in patients with constipation. Therefore, in this study, the psychometric properties of PHQ-9 were tested in patients with constipation. Cronbach’s alphas for the Patient Health Questionnaire were .89 and the correlation between the PHQ-9 and the BDI-II (Beck Depression Inventory) was .81 (p\u3c.01) in 382 heart failure patients with constipation. Ten Korean women reported that living with constipation is a stressful and uncomfortable experience which impacts daily activity, lifestyle, social relationships, and diet. In this pilot study, three out of five patients in the acupressure group reported that acupressure was effective in improving constipation. Cancer patients with less than a four-month history of constipation had less depressive symptoms and higher quality of life compared to patient with more than a four-month history of constipation. In conclusion, acupressure can be a safe and cost effective alternative medicine for constipation

Impact of debriefing sessions following viewing of recorded high fidelity simulation scenarios on knowledge acquisition, self-confidence, and satisfaction: a quasi-experimental study

The role of the nurse educator is complex and it is imperative that educators design pertinent learning activities including implementation of innovative teaching strategies while using the latest pedagogical techniques, and evaluating that learning occurred. This study utilized a quantitative, quasi-experimental, comparison group, crossover design and compared teaching strategies using simulation in the classroom. The purpose of the study was to determine if fourth semester Associate of Science in Nursing students who participated in debriefing sessions after watching recorded high-fidelity simulation scenarios in a nursing class obtained higher examination scores than those who received the same content through traditional lecture format with case studies. The participants also reported their satisfaction with the teaching methods used in the classroom and their feelings of self-confidence in learning the new material. The study sample included 63 participants in two different groups for the first portion of the study and 50 participants for the second portion. After analyzing the descriptive data, there were no significant differences identified between the two study groups. Each of the three hypotheses was tested on two different occasions through the crossover design of the study. Results revealed a significant higher cardiac examination score for the group of participants who received the lecture and case studies for the cardiac content. However, there were no significant differences on the exam scores of hypoperfusion content when comparing the two groups. Both groups of participants reported a significantly higher satisfaction and self-confidence score with the lecture and case study teaching strategy. This study utilized an active teaching strategy for a group of participants who were accustomed to a lecture format classroom and they continued to prefer that type of teaching strategy. Perhaps a few changes to the simulation experience would change the students\u27 perceptions. Further research needs to be conducted to assess outcomes with using simulation in the classroom to evaluate its worth to nursing education