Application of Gauss - Lanczos Algorithm to Determine Low Modes Density of Dirac Operator

There are numerous applications in physics, especially in Lattice QCD, where is required to bound entries and the trace of the inverse and the determinant of a large sparse matrix. This paper review one of the most popular methods which are used in lattice QCD to compute the determinant of the lattice Dirac operator: Gaussian integral representation. A modified algorithm can be used for other purposes too, for example for the determination of the density of eigenvalues of the Dirac operator near the origin. This because in Lattice QCD, low-lying Dirac modes are a suitable tool to understand chiral symmetry since they encode the nature of quark propagation as well as the condensate itself in the chiral regime. The formation of a non-zero chiral condensate is an effect of the accumulation of the low modes of the Dirac operator near zero. We review the development in Krylov subspace evaluation of matrix functions and we develop a practical numerical algorithm to achieve a reliable determination of the density of eigenvalues of the Dirac operator near the origin using the Gauss-Lanczos quadrature. We utilize the optimal properties of Krylov subspaces in approximating the distribution of the eigenvalues of the Dirac operator. In this work we have used the Boriçi - Creutz operator to test our method, as an example of using this algorithm in Lattice QCD

Exosomy, jejich biogeneze, složení a role

Exosomy jsou podtyp extracelulárních váčků, oproti ostatním extracelulárním váčkům se liší svým endozomálním původem a svým typickým tvarem. Tvorba váčků začíná při maturaci časných endozomů a invaginaci váčků dovnitř lumen. Při invaginaci se pomocí proteinových komplexů ESCRT třídí ubiquitinované proteiny dovnitř váčků. Do těchto váčků je také uzavřeno malé množství cytosolu. Po vytvoření se tyto váčky nazývají intraluminální váčky a celé těleso se nazývá multivezikulární tělísko. Multivezikulární tělísko splývá s plazmatickou membránou a intraluminální váčky jsou sekretovány jako exosomy. Exosomy jsou přítomné v mnoha tělesných tekutinách a jsou sekretovány mnoha druhy buněk. V organismu prezentací antigenu na svém povrchu aktivují imunitní systém nebo slouží v buněčné komunikaci přenosem malých RNA molekul.Exosomes are a subtype of extracellular vesicles. Exosomes are distinguishable from other extracellular vesicles by their endosomal origin and their typical cup-shaped morphology. The biogenesis of exosomes begins in the early endosomes by inward budding. The endosomal sorting complex required for transport sorts ubiquitinylated proteins into the vesicles. The small volume of cytosol is also encapsulated during budding. These vesicles are called intraluminal vesicles and the whole body is called multivesicular body. Multivesicular body fuses with the plasma membrane and vesicles are released as exosomes into the extracellular space. Exosomes are present in all bodily fluids and are secreted by a high number of cells. Exosomes present antigens on their surface to trigger immunity or serve in the cellular communication by the transfer of small RNAs.Department of Genetics and MicrobiologyKatedra genetiky a mikrobiologiePřírodovědecká fakultaFaculty of Scienc

Automated Scilab/Scicos Model Generation Based on Scilab Design

Import 23/08/2017Cílem bakalářské práce je vytvořit program, který bude převádět bloky a spoje z~programu Simulink do programu Xcos. Xcos je nástavbou programu Scilab, který je volně dostupným programem pro numerické výpočty a alternativou licencovaného programu MATLAB. Práce bude zahrnovat popis pracovní plochy programu Scilab a Xcos a také detailní popis souboru Xcos, který je potřeba k pochopeni jak funguje převod. Součástí práce bude také porovnání zkušebního zapojení v simulinku a převedeného zapojení v Xcos.The object of my work is creating of program which converts blocks and links from Simulink into Xcos. Xcos is extension of program Scilab which is open source tool for numerical calculations and great alternative to licensed program MATLAB. The work will include description of graphical user interface of Scilab and Xcos programs and also detailed description of Xcos files which are needed for understanding how conversion works. The work will contain comparison of example in Simulink with converted version in Xcos.440 - Katedra telekomunikační technikyvelmi dobř

Comparison Between Different Dosimetric Tools Applications in Radiotherapy

The purpose of this study is to compare some different dosimetric tools applications of professional software such as XiO with other non professional methods. XiO treatment planning system (TPS) provided by ELEKTA is one of the most important professional software used in radiotherapy. TPS plays an important role in the treatment of patients in radiotherapy. TPS system provides a way to design treatment plans, which aim optimal distribution of the prescribed dose to the target volume (tumour bed) and save as much as possible normal tissue or organs at risk (OAR) structure surrounding the tumour. We used MATLAB as a scientific and research environment to demonstrate the possibilities that this software gives in radiotherapy, especially in quality assurance (QA). MATLAB is a high-level language and interactive environment for numerical computation, visualization, and programming. Using MATLAB, we can analyze data, develop algorithms, and create models and applications such CERR (Computational Environment for Radiotherapy Research) and DREES (Dose Response Explorer System). These modules are customized for modelling and exploring dose response in radiation oncology. Various analytical and graphical features are embedded to facilitate navigation and analysis of complex radiobiological interactions and their relationships with treatment outcomes.Keywords: Radiotherapy, dosimetry, XiO treatment planning system, MATLAB, dose distribution, beam modeling

IMPACT OF 12 WEEKS OF SPEED TRAINING ON NUMBER OF STEPS IN YOUNG FOOTBALL PLAYERS

The aim of this article was to monitor and improve the number of steps on speed through a 12-week training program for young players in the city of Elbasan. The 12 week training intervention was carried out with the focus on biomechanical running parameters and mainly on the densities of the steps during the training sessions. The participants in this study were 28 younger players 15.1 ± 0.3 years (control group and intrusion group). The speed time (50m sprint) was evaluated during the sprint test (50m) and also the anthropometric parameters (weight, height, body fat in percentage) were measured at both study times (first T1 measurements and T2 second measurements). Skin thickness measurements were used to estimate the percentage of the body fat of the child. Data from the analysis on this research study by groups show that there is an improvement in mean values for step counts from T1 to T2 as follows; for control group by 1.3 steps (SD 0.8 seconds; t= 4 p=0.01) while for intervention group there is an improvement also by 2.8 steps (SD 1.1 steps; t= 5.7 p=0.005). Finally, statistical analysis show a significant difference in improvements (T1 to T2) between groups for the number of steps (p= 0.03) in favor of the improvement of the intervention group.   Article visualizations

The evolution of the family in the contemporary society: the case of Albania

The study of the family constitutes one of the most important fields of sociology. Everyone in all societies grows up in a family environment and marriage is a very widespread social institution. The structure of the family has changed throughout the world, affecting aspects of behavior, attitudes, beliefs, and relationships. The study focuses on comparing today's family life with those of earlier periods and aims to highlight the eventual changes Albanian family has been through over the years. Nowadays there is a tendency towards free choice of spouse, mainly due to the influence of western ideas that emphasize individualization and love in the family. Women's rights are increasingly recognized in relation to the choice of marriage as well as in decision-making and their contribution within the family. A special importance has been paid to the expansion of children's rights in our country as well. The legal framework is important for the protection of their rights. In addition to the positive aspects and the constant efforts of family members for a dynamic life and with increased well-being, the family often encounters problematic aspects as well; which leads its members to despair and create feelings of anxiety or guilt. Lately, the Albanian society is facing the contemporary tendencies of the family, which require enough time to be accepted by the society

Two geomagnetic regional models for Albania and south-east Italy from 1990 to 2010 with prediction to 2012 and comparison with IGRF-11

Here we present a revised geomagnetic reference model for the region comprising Albanian territory, south-east part of Italian Peninsula and Ionian Sea from 1990 to 2010 with prediction to 2012. This study is based on the datasets of magnetic measurements taken during different campaigns in Albania and Italy in the time of concern, together with a total intensity data set from the Ørsted and CHAMP satellite missions. The model is designed to represent the Cartesian components, X, Y, Z and the total intensity F of the main geomagnetic field (and its secular variation) for the period of interest. To develop the model, we applied a Spherical Cap Harmonic Analysis (SCHA) of the geomagnetic potential over a 16° cap with most of the observations concentrated in the central 4° half-angle. The use of a larger cap than that containing the data was made to reduce the typical problems in SV modelling over small regions. Also a new technique, called ``Radially Simplified Spherical Cap Harmonic Analysis" (RS-SCHA), was developed to improve the model especially in the radial variation of the geomagnetic field components. Both these models provide an optimal representation of the geomagnetic field in the considered region compared with the International Geomagnetic Reference Field model (IGRF-11) and can be used as reference models to reduce magnetic surveys undertaken in the area during the time of validity of the model, or to extrapolate the field till 2012