Analysing two or more video sequences of dynamic scenes typically requires time synchronisation between sequences, where this alignment is not always possible using hardware. A particular method will ...most likely process the entire, frequently lengthy, imaged material, requiring additional processing which normally serves for synchronisation only. Software-based synchronisation methods impose, in basically all cases, certain assumptions about an imaged three-dimensional (3D) scene and are suited for the already imaged video material in the past. The authors argue that there are applications where the unsynchronised video sequences have not yet been taken. The time-efficient solution uses a pendulum consisting of a small ball, attached to a 50 cm string and suspended from a pivot so that it can swing freely. The authors estimate the time instant when the ball swings through the equilibrium position. The difference in these times for two cameras yields a subframe time difference between cameras. The proposed method yields subframe differences, statistically no different from ground truth data. 3D reconstruction results for synchronised data clearly outperform those which are unsynchronised. The proposed method relaxes any restrictions and assumptions about the 3D scene that will be imaged later on, yet it allows accurate subframe synchronisation in less than a second.
This paper proposes a novel method for stereo matching which is based on combination of active and passive stereo 3D reconstruction approaches. A laser line is used to scan the reconstructed scene ...and a stereo camera pair is used for the image acquisition. Each image pixel is scanned at a specific scan time so that the intensity time patterns of the correspondent pixels are highly correlated. This yield in highly confident and accurate disparity map calculation and also allows the reconstruction of poorly textured as well as the extremely textured surface which are very hard to deal with using the conventional passive stereo approaches. The occluded regions are also detected successfully. This method is not computationally intensive and can be used for turning the smartphone into the practical 3D scanner as presented in this work.
Energy savings in electric railway transportation is essential due to the ever-rising energy cost and endeavour to reduce climate change impact. A valuable method to increase energy efficiency is to ...recuperate
and consenquently utilize the regenerative braking energy of electric railway vehicles. The system that stores and reuses the braking energy is called a regenerative braking system, consisting of an energy storage
system (ESS), a birdirectional power converter, and a control system, which includes an algorithm controlling the braking energy flow. A properly designed algorithm increases energy efficiency, lessens the stress on the power grid, increases the lifetime of the energy storage system, and enables a catenary-free operation of the electric railway vehicle. The algorithm is defined by combining two algorithms with opposite features – maximum energy savings and minimal number of cycles.
The algorithm is then synthesized from those two criteria using an optimization process and then simulated while its effect on energy savings and grid stability is analyzed. Energy savings and a more stable
grid are achieved with the use of the algorithm, which corroborates the
inclusion of a regenerative braking system in electric railway vehicles.
In order to obtain improvement in energy efficiency of urban rail transportation system by usage of regenerative breaking energy this article deals with modeling of the rail vehicle and energy ...storage, as well as, with proposing form of breaking energy flow control algorithm. The control algorithm is based on maximization of used regenerative breaking energy as well as maximization of a storage element charge-discharge life cycle. The critical thresholds of the algorithm should be obtained by optimization. The accurate simplified rail vehicle model with storage element model suitable for control algorithm optimization is developed in this article. In addition, control algorithm and optimization cost function are proposed in order to maximize used regenerative breaking energy and life cycle of the storage element. The roll of control algorithm during implementation phase on real vehicle will be generation of the reference signal for low level control algorithms of the supercapacitor converter.
Ovim radom predstavljena je nova metoda stereo uparivanja temeljena na kombinaciji aktivnog i pasivnog stereo pristupa. Rekonstruirana scena skenirana je laserskom linijom, dok se par stereo kamera ...koristi za akviziciju video isječka. Svaki slikovni element rekonstruirane scene skeniran je laserskom linijom u određenom trenutku stoga su profili intenziteta svjetline u vremenskoj domeni izrazito korelirani za slikovne elemente lijeve i desne kamere koji odgovaraju istom slikovnom element rekonstruirane scene. Stoga je rezultat predstavljene metode određivanje stereo parova slikovnih elemenata s visokom pouzdanošću. Nadalje, predstavljena metoda omogućuje rekonstruiranje izrazito slabo odnosno izrazito intenzivno teksturiranih scena što je često veoma teško postići korištenjem konvencionalnih metoda stereo 3D rekonstrukcije. Metoda je jednostavna te ju je moguće implementirati na sustavima ograničenih računarskih resursa, stoga je iznimno pogodna za primjenu na mobilnim platformama primjerice pametnim telefonima.
To assess the correlations of B regulatory cells (Bregs) and monocyte subsets in peripheral blood with the National Institutes of Health (NIH)-consensus-defined clinical manifestations of chronic ...graft-vs-host disease (cGvHD), in an attempt to establish their role as cellular biomarkers.
This multidisciplinary prospective study enrolled adult cGVHD patients treated in the University Hospital Center Zagreb and University of Zagreb School of Medicine. Immunophenotypic subpopulations of CD24highCD38high Bregs (CD27-, CD27+, and total) and monocyte (classical, intermediate, and non-classical) counts were correlated with demographic, transplant, and cGVHD-related data. Bivariate correlation analysis was performed to evaluate the correlations between Bregs and monocytes subsets and cGVHD organ involvement, as well as cGVHD severity and immunosuppression intensity.
Twenty-two adult patients (54.5% female) with cGVHD were enrolled. The median (range) age was 44.5 years (24-65). All patients were transplanted for hematologic malignancies and 40.9% had severe NIH cGVHD global score. The median time from cGVHD diagnosis to the analysis was 16.6 months (0-176). The organ most frequently affected with cGVHD were the eyes (68.2%), skin (45.5%), lungs (45.5%), and liver (40.9%). Lower total and CD27-Bregs counts were correlated with worse cGVHD severity, higher immunosuppression intensity, and lung cGVHD, in terms of cell count, but also with skin cGVHD, in terms of percentages. Patients with liver and joint/fascia cGVHD had a lower percentage of non-classical monocytes and patients with more severe global NIH score had a higher classical monocytes count.
Different organs affected by cGVHD are differently associated with different subpopulations of Bregs and monocytes.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
Aim To assess the correlations of B regulatory cells (Bregs)
and monocyte subsets in peripheral blood with the National Institutes of Health (NIH)-consensus-defined clinical
manifestations of chronic ...graft-vs-host disease (cGvHD), in
an attempt to establish their role as cellular biomarkers.
Methods This multidisciplinary prospective study enrolled
adult cGVHD patients treated in the University Hospital
Center Zagreb and University of Zagreb School of Medicine. Immunophenotypic subpopulations of CD24highCD38high Bregs (CD27-, CD27+, and total) and monocyte
(classical, intermediate, and non-classical) counts were
correlated with demographic, transplant, and cGVHD-related data. Bivariate correlation analysis was performed to
evaluate the correlations between Bregs and monocytes
subsets and cGVHD organ involvement, as well as cGVHD
severity and immunosuppression intensity.
Results Twenty-two adult patients (54.5% female) with
cGVHD were enrolled. The median (range) age was 44.5
years (24-65). All patients were transplanted for hematologic malignancies and 40.9% had severe NIH cGVHD
global score. The median time from cGVHD diagnosis to
the analysis was 16.6 months (0-176). The organ most frequently affected with cGVHD were the eyes (68.2%), skin
(45.5%), lungs (45.5%), and liver (40.9%). Lower total and
CD27-Bregs counts were correlated with worse cGVHD
severity, higher immunosuppression intensity, and lung
cGVHD, in terms of cell count, but also with skin cGVHD,
in terms of percentages. Patients with liver and joint/fascia cGVHD had a lower percentage of non-classical monocytes and patients with more severe global NIH score had
a higher classical monocytes count.
Conclusion Different organs affected by cGVHD are differently associated with different subpopulations of Bregs
and monocytes.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
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