In this paper we present a method of improving a human detector by means of crowd density information. Human detection is especially challenging in crowded scenes which makes it important to ...introduce additional knowledge into the detection process. We compute crowd density maps in order to estimate the spatial distribution of people in the scene and show how it is possible to enhance the detection results of a state-of-the-art human detector by this information. The proposed method applies a self-adaptive, dynamic parametrization and as an additional contribution uses scene-adaptive learning of the human aspect ratio in order to reduce false positive detections in crowded areas. We evaluate our method on videos from different datasets and demonstrate how our system achieves better results than the baseline algorithm.
Interest in on-line error detection continues to grow as VLSI circuits increase in complexity. Concurrent checking is increasingly becoming a desirable characteristic thanks to its ability to detect ...transient faults that may occur in a circuit during normal operation. Accordingly, Concurrent Error Detection (CED) techniques allow the detection of transient faults, which probably not be detected in off-line testing, since they may not occur in test mode. Actually, memories occupy 90% of the SOC area. As they are a fault sensitive, adding error correcting codes (ECC) structures is becoming conventional to enhance the reliability. Hence, designing the ECC logic must ensure not only responding to nanotechnology requirements as high density, reduced power consumption and faster calculation delays but also to be a fail-safe. In this paper, a new self-checking error correcting SEC-DED code architecture is presented. We added the self-checking capability to the SEC-DED circuit using a self-checking differential XOR implemented in Complementary Pass Transistor Logic (CPL). We have selected the Hsiao code to design an efficient SEC-DED.
Fifty-six total laryngectomy cases are presented with special reference to post-operative fistula formation. All these patients were operated upon at the Department of Otorhinolaryngology at the Bnai ...Zion Medical Centre by one surgeon over a 16-year period, from 1976-1992. The incidence of fistula was 12.5 per cent. This paper could not verify reports that any specific factors were significantly related to fistula formation, although there was a preponderance of fistulas in patients presenting with late stage tumours. No relationship was found with rate of infection, age, or between previous neck irradiation (ranging from 5500 to 7000 cGy) and fistula formation in the patient population. If a fistula occurs, the administration of oral solid food keeping the nasogastric tube in place for administration of fluids may lead to spontaneous closure of the fistula, with no need for secondary surgical repair.
The potomania or primary polydipsia is associated to schizophrenia in 20% of cases. Authors reports a case of a patient 27 old years, that suffering from hebephrenia who presented potomania. It was ...necessary to eliminate secondary polydipsia. The main complication resulting from potomania is water intoxication. Neurobiological or psychological hypothesis were suggested related to the etiopathogeny of this association. Some biological or comportemental therapy were effective in this context.
Crowd context-dependent privacy protection filters Fradi, Hajer; Eiselein, Volker; Keller, Ivo ...
2013 18th International Conference on Digital Signal Processing (DSP),
2013-July
Conference Proceeding
While various privacy protection filters have been proposed in the literature, little importance has been given to the context relevance of these filters. In this paper, we specifically focus on the ...dependency between privacy preservation and crowd density. We show that information about the crowd density in a scene can be used in order to adjust the level of privacy protection according to the local needs. For the estimation of density maps, we use an approach based on FAST feature extraction and local optical flow computation which allow excluding feature points on the background. This process is favorable for the later density function estimation since the influence of features irrelevant to the crowd density is removed. Afterwards, we adapt the protection level of personal privacy in videos according to the crowd density. The effectiveness of the proposed framework is evaluated with videos from different crowd datasets.
Over the past decades, the pacemakers have become the standard treatment for patients with symptomatic sinus node disease or high grade atrioventricular block. With the development of pacemaker ...technology, attempts have been made to apply pacing to the treatment of problems other than symptomatic bradycardia. These problems include pacing to prevent atrial arrhythmia, improve hemodynamic function and to prevent neurocardiogenic syncope. The aim of modern pacing is not only reducing mortality but also improving quality of life and reducing morbidity. Ongoing studies will help to identify better the patient population that benefits most of this treatment.
Atherosclerotic disease in the aorta is associated with a high risk of cardiovascular events. This prospective study was conducted to correlate the presence of aortic plaques in the thoracic aorta ...detected by transesophageal echocardiography (TEE) and angiographically significant coronary artery disease. The presence of aortic plaques on TEE had a sensitivity of 97%, a specificity of 80% and positive and negative predictive values of 89% and 94%. Univariate logistic regression revealed that aortic plaques were the most significant independent predictor factor of coronary artery disease compared to other risk factors. This study reveals that the thoracic aortic plaques detected by TEE is a strong predictor of the presence and the severity of coronary artery disease.
Self-checking designs will gain increasing interest in industrial applications if they satisfy the following requirements: high fault coverage and reduced hardware cost with reduced design effort. ...The aim of this work is to contribute to reach these requirements for the design of self-checking adders/ALUs. In this paper, we present efficient self-checking XOR implementation for schemes using the dual duplication code. Among the known self-checking adder designs, the dual duplicated scheme has the advantage to be totally self-checking for single faults. The drawback of this scheme is that it requires generally the maximum hardware overhead. In this work, we propose a low cost self-checking implementation. The proposed design is a novel differential XOR gate implemented in CMOS pass transistor logic, and performed with only four transistors.
This retrospective study describes 100 cases of infective endocarditis (IE), collected between 1980 and 2004. Patients were subdivided into 2 groups, according to the use of trans-esophageal ...echocardiography (TOE) in the institution where the study was performed: group A (GA=55 patients, between 1980 and 1991) and group B (GB=45 patients, between 1992 and 2004). The IE cases of 59 men and 41 women were analyzed. Patients had a mean age of 33 years (range 15-75 years). An underlying heart disease was involved in all cases, mainly rheumatic heart disease (93% of cases). Native valve endocarditis (NVE) was seen in a majority of cases (93%), and the localization of IE was aortic in 36 cases, mitral in 36 cases, mitro-aortic in 26 cases and mitro-aortic-tricuspid in 2 cases. Prosthetic valve endocarditis (PVE) occurred in 12 cases. Blood cultures were positive in 31 cases, with 14 staphylococcal infections (3 in GA and 11 in GB) (p < 0.05), of which 6 were coagulase-negative; 13 were streptococci and 4 were Gram negative bacilli. All patients had a transthoracic echocardiography (TTE), and patients in group B also had a TOE. Seventeen patients had a favorable outcome without need of a surgical intervention. Early surgery was necessary in 71 cases (85.5%), and elective surgery in 12 cases (14.5%). Mortality while awaiting surgery was 27%, and has been decreasing for the past decade (41.8% in GA and 8.9% in GB) p < 0.05. Postoperative mortality after early surgery intervention was 13.6% (6 among 44 patients), and it was 8.3% (1 among 12 patients) after elective surgery intervention. Overall mortality was 34%: 27 deaths with NVE (30.7% 27/88), and 7 deaths with PVE (58.3% 7/12) NS. Predictors of mortality in this observational study were positive blood cultures involving staphylococci, the presence of valve mutilations, unstable prostheses, and heart failure.
