Noise Reduction Technique for Heart Rate Monitoring Devices

Electrocardiogram (ECG) signal has been widely used to detect the heart rate of the human, and it is useful in cardiac pathology. ECG detects several heart diseases of the patients. Wearable technology comes to be conducted as work as the monitoring devices to get the ECG signal directly from the patients. However, the movement of the patients will cause noises which interfere the result of the ECG. To overcome this problem, the digital filter is proposed to be designed and used in getting an accurate ECG signal. The filtering ECG results give likely in analysing the heart disease.The structures and the coefficients of the digital filters are designed using Filter Design & Analysis (FDA) tool in MATLAB. The analysis of magnitude responseis done in two type of the digital filter - the infinite impulse response (IIR) and finite impulse response (FIR). This paper evaluatesthat the FIR digital filter is more stable and better to be used in removing noise from ECG signals

Ultra wideband: applications, technology and future perspectives

Ultra Wide Band (UWB) wireless communications offers a radically different approach to wireless communication compared to conventional narrow band systems. Global interest in the technology is huge. This paper reports on the state of the art of UWB wireless technology and highlights key application areas, technological challenges, higher layer protocol issues, spectrum operating zones and future drivers. The majority of the discussion focuses on the state of the art of UWB technology as it is today and in the near future

Comparison of superficial surgical site infection following use of diathermyand scalpel for making skin incision in inguinal hernioplasty

The method of making surgical incision remains a complex problem. Although controversial, the use of diathermy instead of scalpel for skin incision and underlying tissue dissection is gradually gaining wide acceptance. This is due to the observation that no change in wound complication rate or postoperative pain is reportedwith the use ofDiathermy. However, the fear of excessive scarring and poorwound healing has curtailed itswidespread use for skin incision. The objective of the study is to compare superficial surgical site infection (SSSI) in diathermy and scalpel skin incision in inguinal hernioplasty. Quasi experimental study. Study was conducted at Surgical Unit II, Holy Family Hospital. Rawalpindi from1 Jan. 2008 to 30 September. 2008. Atotal of 80 patients who presented with inguinal hernias were included in the study. Patientswere divided in two groups. Group1: In 40 patients skin incisionwasmadewithDiathermy,Group 2: The other 40 had skin incisionwith scalpel. Themean age of patients in the intervention group (Group 1)was 50 years while in the control group (Group 2) itwas 46 years. 48% patients in Group 1 and 55% in the Group 2 had indirect inguinal hernias. SSSI was noted in 12.5% cases in Group 1 whereas in Group 2 it was 17.5% but this difference was not found to be statistically significant (p value=0.378). The use of diathermy for making skin incisions is as safe as scalpel and there is no significant difference amongst both regardingwound infection. Keywords: Diathermy incision, electrocautery, scalpel skin incision, superficial surgical site infectio

Spatiotemporal Crime Analysis

There has been a rise in the use of visual analytic techniques to create interactive predictive environments in a range of different applications. These tools help the user sift through massive amounts of data, presenting most useful results in a visual context and enabling the person to rapidly form proactive strategies. In this paper, we present one such visual analytic environment that uses historical crime data to predict future occurrences of crimes, both geographically and temporally. Due to the complexity of this analysis, it is necessary to find an appropriate statistical method for correlative analysis of spatiotemporal data, as well as design an interface to present these results to the user in a timely fashion. In our approach, we make use of the Dynamic Covariance Kernel Density Estimation (DCKDE) method to visualize the data in a geospatial context. The results are represented as a heat map showing the areas with a higher probability of crime. In the temporal context, a modified Seasonal Trend decomposition based on Loess (STL) is used to decompose time series signals in order to isolate trends that are used to predict the number of crime occurrences in pre-defined areas for a given time interval. These techniques were applied to Tippecanoe County to make predictions for the next time step. We evaluated the results of our prediction technique against observed data. We note that our methods are applicable to any situation where incidents may have a local spatial correlation

Pengaruh Temperatur dan Laju Aliran Gas CO2 pada Sintesis Kalsium Karbonat Presipitat dengan Metode Bubbling

Kalsium karbonat presipitat mempunyai tiga jenis bentuk kristal yaitu kalsit, vaterit, dan aragonit. Pengaruh temperatur dan laju aliran gas CO2 terhadap pembentukan fase dan morfologi PCC telah dipelajari. Penelitian ini menggunakan batu kapur alam dan metode bubbling. Pada proses karbonasi variasi temperatur reaksi yang digunakan adalah 300C, 500C, dan 700C sedangkan pada masing-masing variasi temperatur dilakukan variasi laju aliran gas CO2 yaitu 2, 5, dan 7 SCFH. Selama proses karbonasi temperatur dan kecepatan pengadukan dijaga konstan. Endapan yang terbentuk disaring kemudian dikeringkan. Karakterisasi yang dilakukan mengggunakan XRD dan SEM. Dari hasil sintesis dapat disimpulkan bahwa vaterit terbentuk pada temperatur rendah dengan laju aliran gas CO2 tinggi, aragonit terbentuk pada temperatur tinggi dengan laju aliran gas CO2 rendah, sedangkan kalsit tebentuk pada setiap variasi perlakuan yang dilakukan karena kalsit merupakan fase yang paling stabil

Development and Experimental Investigation on Delay Time Consistency of Modified Si/PbO/Pb3O4/FG Pyrotechnic Delay Composition

In the present study, experimental investigation was carried out on the delay time consistency of modified Si/PbO/Pb3O4/FG pyrotechnic delay composition in a delay tube. Where Si is the fuel, PbO/Pb3O4 are oxidizers and Fish Glue (FG) is the binder. Ingredient mixing and loading pressure were studied. Results revealed that homogenous mixing of the delay composition is a very critical parameter for controlling the time consistency of pyrotechnic delay composition. The delay time accuracy was improved from 25% to about 7.42% by ensuring homogenous mixing of the ingredients. Results also show that loading pressure ranged from 30,000 to 65,000 psi did not affect much the delay time of this pyrotechnic composition and the burning rate

Progressive resistance training improving gait performance and mobility in acute and chronic stroke patients

Stroke, a neurological disorder, leads to long-term disability thereby greatly affecting gait and mobility. The purpose of the current study was to investigate the effects of progressive resistance training in both acute and chronic stroke patients. A quasi interventional study was designed and 46 stroke patients were recruited through convenience sampling technique. Sample size was calculated using epi-tool. Patients who had cognitive problems, balance impairments and contractures were excluded from the study. The study was conducted from January to June 2018, at Rafsan Rehab & Research Centre, Peshawar. Progressive resistance exercises starting at 50 % of one repetition maximum (RM) were performed three days/week and for a total duration of nine weeks. Blind assessor measured readings at baseline and after nine weeks. Gait dynamic index (GDI), Six-Meter Walk Test (SMWT) and Five Times Sit-to-Stand (FTSTS) tools were used to collect the required data. The data was analysed at baseline and after nine weeks on SPSS-20. After nine weeks of intervention significant improvement was recorded in patients on GDI (p<0.001), SMWT score (P<0.001) and FTSTS (p<0.001). Progressive resistance training improves mobility limitations and gait in both acute and chronic stroke patients.måsjekke

Effect of Background Evolution on the Curvaton Non-Gaussianity

We investigate how the background evolution affects the curvature perturbations generated by the curvaton, assuming a curvaton potential that may deviate slightly from the quadratic one, and parameterizing the background fluid density as \rho\propto a^{-\alpha}, where a is the scale factor, and \alpha depends on the background fluid. It turns out that the more there is deviation from the quadratic case, the more pronounced is the dependence of the curvature perturbation on \alpha. We also show that the background can have a significant effect on the nonlinearity parameters f_NL and g_NL. As an example, if at the onset of the curvaton oscillation there is a dimension 6 contribution to the potential at 5 % level and the energy fraction of the curvaton to the total one at the time of its decay is at 1 %, we find variations \Delta f_NL \sim \mathcal{O}(10) and \Delta g_NL \sim \mathcal{O}(10^4) between matter and radiation dominated backgrounds. Moreover, we demonstrate that there is a relation between f_NL and g_NL that can be used to probe the form of the curvaton potential and the equation of state of the background fluid.Comment: 14 pages, 8 figure

THE MODEL OF JUSTICE AND COMMITMENT IN THE EVALUATION OF STUDENT’S PERFORMANCE

This study aimed to examine the importance of justice in students’ performance evaluation which might foster students’ commitment to lecturers, and as a consequence students would perform well. The research was conducted on students from departments of Sebelas Maret University who had undertaken com-petency-based learning; and used stratified sampling. Regression analysis was used to test the hypotheses. The results showed that students’ commitment to lecturers did not significantly influence students’ performance. Distributive and procedural justice in controlled commitment did not significantly influence students’ performance. On the other hand, procedural and distributive justice significantly influenced students’ com-mitment to lecturers