Form removal aspects on the waviness parameters for steel sheet in automotive applications : fourier filtering versus polynomial regression

Premium car makers attach great importance to the visual appearance of the painted car skin as an indication of product quality. The “orange peel” phenomenon constitutes a major problem here. It is not only depending on the paint’s chemical composition and application method, but also on possible waviness components in the sheet substrate. Therefore one is searching hard for a valuable waviness parameter to quantify the substrate’s fitness for purpose. A technically emerging problem is how to remove the form from the measured signal, which is indeed not significant to the orange peel phenomenon. This paper will compare two commonly used approaches: i.e. Fourier filtering versus polynomial regression and will reveal and quantify some common aspects in terms of wavelengths

Patterns of medication use and factors associated with antibiotic use among adult fever patients at Singapore primary care clinics.

BACKGROUND: Antimicrobial resistance is a public health problem of global importance. In Singapore, much focus has been given to antibiotic usage patterns in hospital settings. Data on antibiotic use in primary care is lacking. We describe antibiotic usage patterns and assess factors contributing to antibiotic usage among adults presenting with acute febrile illness (AFI) in primary care settings in Singapore. METHODS: We analyzed data from the Early Dengue infection and outcome study. Adults with AFI presenting at 5 Singapore polyclinics were included. We used multivariable logistic regression to assess demographic, clinical and laboratory factors associated with antibiotic usage among adults with AFI. RESULTS: Between December 2007 and February 2013, 1884 adult AFI patients were enrolled. Overall, 16% of adult AFI patients reported antibiotic use. We observed a rise in the use of over-the-counter medications in late 2009 and a decrease in antibiotic use during 2010, possibly related to the outbreak of pandemic influenza A H1N1 virus. After adjusting for age, gender, polyclinic and year of enrolment, the following factors were associated with higher odds of antibiotic use: living in landed property (compared to public housing) (OR = 1.73; 95% CI: 1.06-2.80); body mass index (BMI) <18.5 (OR = 1.87; 95% CI: 1.19-2.93); elevated white blood cell (WBC) count (OR = 1.98; 95% CI: 1.42-2.78); and persistence of initial symptoms at 2-3 days follow-up with OR (95% CI) for categories of 1, 2, 3, and ≥4 persisting symptoms being 2.00 (1.38-2.92), 2.67 (1.80-3.97), 4.26 (2.73-6.64), and 2.79 (1.84-4.24) respectively. CONCLUSIONS: Our study provides insights on antibiotic usage among adult patients presenting to primary care clinics with febrile illness, and suggests that high socio-economic status, and risk factors of a severe illness, that is, low BMI and persistence of initial symptoms, are associated with higher antibiotic use. Further work to understand trends of antibiotic usage in both private and public primary care clinics, and factors that influence patient expectation and physician prescribing of antibiotics is important

Parents' attitudes and views regarding antibiotics in the management of respiratory tract infections in children : a qualitative study of the influence of an information booklet

Background: Respiratory tract infection (RTI) is the most common reason to consult a GP during childhood, and often results in unnecessary prescribing of antibiotics. Using an information booklet during the consultation has been shown to be a promising tool to reduce antibiotic prescribing. The influence of such information on parents' views, knowledge, and expectations has not been investigated yet. Aim: To explore the reported attitude and knowledge of parents towards antibiotics and management of childhood RTI, as well as the added influence of an information booklet, as perceived by parents. Design & setting: Qualitative interviews were conducted with Dutch parents who consulted the GP with their child for RTI symptoms and received an information booklet. Method: Semi-structured interviews were audio-recorded, transcribed, coded, and analysed using framework analysis by open-axial coding and describing themes. Results: Eighteen parents were interviewed. Four themes were identified: prior reticence towards antibiotics; expectations of the consultation and trust in the GPs' treatment decision; confirmation and reassurance by the booklet; self-management and future consultation intentions. Dutch parents felt reassured and more confident about their pre-existing reticent attitude towards antibiotic treatment; therefore, they thought their opinion and attitude had not really been changed by the booklet. Conclusion: In a low-prescribing country like the Netherlands, information should focus on enhancing self-efficacy and providing concrete safety-netting advice. For other countries with less reticence towards antibiotics, it is recommended that the knowledge, attitude, and perceptions of the population is studied, in order to be able to tailor interventions

Parents' attitudes and views regarding antibiotics in the management of respiratory tract infections in children : a qualitative study of the influence of an information booklet

Background: Respiratory tract infection (RTI) is the most common reason to consult a GP during childhood, and often results in unnecessary prescribing of antibiotics. Using an information booklet during the consultation has been shown to be a promising tool to reduce antibiotic prescribing. The influence of such information on parents' views, knowledge, and expectations has not been investigated yet. Aim: To explore the reported attitude and knowledge of parents towards antibiotics and management of childhood RTI, as well as the added influence of an information booklet, as perceived by parents. Design & setting: Qualitative interviews were conducted with Dutch parents who consulted the GP with their child for RTI symptoms and received an information booklet. Method: Semi-structured interviews were audio-recorded, transcribed, coded, and analysed using framework analysis by open-axial coding and describing themes. Results: Eighteen parents were interviewed. Four themes were identified: prior reticence towards antibiotics; expectations of the consultation and trust in the GPs' treatment decision; confirmation and reassurance by the booklet; self-management and future consultation intentions. Dutch parents felt reassured and more confident about their pre-existing reticent attitude towards antibiotic treatment; therefore, they thought their opinion and attitude had not really been changed by the booklet. Conclusion: In a low-prescribing country like the Netherlands, information should focus on enhancing self-efficacy and providing concrete safety-netting advice. For other countries with less reticence towards antibiotics, it is recommended that the knowledge, attitude, and perceptions of the population is studied, in order to be able to tailor interventions

Prescription of antibiotics in the medical care of newly arrived refugees and migrants

Purpose Unnecessary and inappropriate use of antibiotics is a widespread problem in primary care. However, current data on the care of refugees and migrants in initial reception centers is pending. This article provides data on prescription frequencies of various antibiotics and associated diagnoses. Methods In this retrospective observational study, patient data of 3255 patients with 6376 medical contacts in two initial reception centers in Germany were analyzed. Patient data, collected by chart review, included sociodemographic characteristics, diagnoses, and prescriptions. Antibiotic prescription behavior and corresponding physician‐coded diagnoses were analyzed. Results Nineteen percent of all patients in our study received systemic antibiotics during the observation period, with children below the age of 10 years receiving antibiotics most frequently (24%). The most commonly prescribed antibiotics were penicillins (65%), macrolides (12%), and cephalosporins (7%). The most frequent diagnoses associated with antibiotic prescription were acute tonsillitis (26%), bronchitis (21%), infections of the upper respiratory tract (14%), and urinary tract infections (10%). In case of acute bronchitis 74% of the antibiotic prescriptions were probably not indicated. In addition, we found a significant number of inappropriate prescriptions such as amoxicillin for tonsillitis (67%), and ciprofloxacin and cotrimoxazol for urinary tract infections (49%). Conclusion Regarding inappropriate prescription of antibiotics in refugee healthcare, this study shows a rate ranging from 8% for upper respiratory tract infections to 75% for acute bronchitis. Unnecessary use of antibiotics is a global problem contributing to gratuitous costs, side effects, and antimicrobial resistance. This research contributes to the development of stringent antibiotic stewardship regiments in the particularly vulnerable population of migrants and refugees