Search results for "thing"
showing 10 items of 908 documents
Cartoon filter via adaptive abstraction
2016
We propose a non-parametric methodology to realize abstraction images.The redundant wavelet "a trous" algorithm is applied for details detection.An multi-scale circular median filter is used as a smoothing filter.The proposed algorithm is simple and fast on low-cost entry-level hardware. Abstraction in computer graphics defines a procedure that discriminates the essential information that is worth keeping. Usually details, that correspond to higher frequency components, allow to distinguish otherwise similar images. Vice versa, low frequencies are related to the main information, which are larger structures. Contours themselves may also be identified by high frequencies and separate each pi…
Adult-derived neural precursors transplanted into multiple regions in the adult brain
1999
Neural stem cells persist in the adult brain subventricular zone (SVZ). These cells generate a large number of new neurons that migrate to the olfactory bulb, where they complete their differentiation. Here, we transplanted cells carrying beta-galactosidase under the control of neuron-specific enolase promoter (NSE::LacZ) from the SVZ of adult mice into the striatum cortex and olfactory bulb, with or without an excitotoxin lesion. Between 2 and 8 weeks after transplantation, grafted cells were present in the recipient regions, but extensive migration and differentiation into mature neurons of grafted cells were only observed in the olfactory bulb. Clusters of graft-derived neuroblasts formi…
Sleep disordered breathing in medically stable patients with myasthenia gravis
2007
We investigate sleep and breathing in clinically stable myasthenia gravis (MG) patients and ask weather sleep disordered breathing (SDB) is causally linked with MG. Nineteen MG patients with a mean disease duration of 9.7 years underwent sleep studies in two consecutive nights. The primary outcome measure was the respiratory disturbance index (RDI) in terms of snoring and apneas/hypopneas. Further outcome measurements were total sleep time, sleep stage distribution and the number of arousals. A clinically relevant SDB in terms of obstructive sleep apnea (OSA) (defined as RDI > 10/h) was found in four patients. There were only a few central apneas (central apnea index: 0.19 +/- 0.4/h). We di…
Effect of Hyper- and Hypoventilation on CBF during Anesthesia
1969
Alexander and Wollman [1, 2, 4, 8], Harper [5] and McDowall and other investigators have published observations on CBF during anaesthesia in man and dog, when arterial pCO2 was altered by hyper- or hypoventilation.
A Trajectory-Driven 3D Channel Model for Human Activity Recognition
2021
This paper concerns the design, analysis, and simulation of a 3D non-stationary channel model fed with inertial measurement unit (IMU) data. The work in this paper provides a framework for simulating the micro-Doppler signatures of indoor channels for human activity recognition by using radiofrequency-based sensing technologies. The major human body segments, such as wrists, ankles, torso, and head, are modelled as a cluster of moving point scatterers. We provide expressions for the time variant (TV) speed and TV angles of motion based on 3D trajectories of the moving person. Moreover, we present mathematical expressions for the TV Doppler shifts and TV path gains associated with each movin…
Can Tumor Oxygenation be Improved by Reducing Cellular Oxygen Consumption?
1999
Tumor hypoxia, which can be found in many experimental and human tumors is an important factor influencing the therapeutic efficacy of standard radiotherapy, O2-dependent chemotherapy and photodynamic therapy (Hall, 1994) and might be responsible for the development of aggressive tumor cell subpopulations (Graeber et al., 1996). Since this oxygen deficiency results from a disparity between O2 supply to the tumor tissue and the oxygen demand of the cells, several attempts have been undertaken to improve tumor oxygenation primarily by increasing the arterial oxygen supply. The O2 supply to the tumor cells can be improved by (a) increasing the arterial O2 content (by breathing hyperoxic gases …
Poly-Victimization in Polish Adolescents: Risk Factors and the Moderating Role of Coping.
2018
This study aimed to investigate the prevalence of poly-victimization in Polish adolescents and assess factors associated with poly-victimization risk across different ecological levels. This study further examined whether coping styles could moderate the impact of poly-victimization on emotional well-being. Participants were 454 adolescents, aged between 13 and 19 years, from an urban region of Poland. Adolescents completed self-report measures assessing community, school, and family risks, along with a peer nomination task measuring social preference. Teachers also completed a measure assessing adolescent problem behaviors. Findings revealed that the majority of the sample (70%) experience…
Effects of adenotonsillectomy on neurocognitive and behavioural function in pediatric obstructive sleep apnea syndrome
2018
Effects of adenotonsillectomy on neurocognitive and behavioural function in pediatric obstructive sleep apnea syndrome. Objectives: Aim of this study is to verify the presence of neurocognitive, neurobehavioral or sleep disturbances in children affected by adenotonsillar hypertrophy (ATH) and Obstructive Sleep Apnea Syndrome (OSAS) and verify their improvement after Adeno-Tonsillectomy (AT). Methods: Eighty children suffering from adenotonsillar hypertrophy and OSAS were recruited for AT in the ENT Department of the University of Palermo. All the children underwent clinical evaluation, including rhinofibroscopy for grading the obstruction due to the adenotonsillar hypertrophy (before and 6 …
Global treatment of chromatographic data with MICHROM
1997
Abstract The program MICHROM for the general treatment of chromatographic data is presented. MICHROM takes part in all the stages of the analytical process. It allows determination of dead time, smoothing of chromatograms, measurement of peak parameters, fitting of skewed peaks, and deconvolution of overlapped peaks. Tools for the experimental design, optimization of the mobile phase composition to resolve a mixture of analytes, and simulation of chromatograms in several experimental conditions, are implemented. Routines for the graphical representation of chromatograms, resolution surfaces, contour maps, management of data series, optimization and regression analysis, are also included. Th…
Alvis Hermanis: “To Be Everything and Nothing at All”
2021
This chapter is about the oeuvre of Alvis Hermanis, a Latvian stage and opera director and artistic leader of New Riga Theatre. It focuses on the road Hermanis took from the 1990s, as a young and rebellious postmodern director, into the second decade of the twenty-first century. In such productions as Long Life (2003), Inspector General (2006), The Sound of Silence (2007) and Brodsky/Barishnikov (2015), he approaches psychological theatre on a new, innovative level, exploring it as a kind of time machine in order to study people and history. In 2013, Hermanis entered the world of opera. In his productions including Alois Zimmerman’s Die Soldaten (2013), Leos Janacek’s Jenufa (2014) and so o…