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Kinematic analysis of locomotor system in persons with abnormal position of the hip joint.
Zahradník, Petr ; Kolář, Pavel (advisor) ; Janura, Miroslav (referee) ; Havlas, Vojtěch (referee)
Femoroacerabular impingement (FAI) syndrome is a hip joint impairment, which occurs frequently as a result of repeated overloading of the joint in combination with the imperfect orientation of the articulating surfaces. Therefore, it does not respect the biomechanically optimal position of the joint. Currently, many experts consider FAI as an important factor contributing to hip degeneration with the subsequent coxarthrosis. In our research, we evaluated how the FAI translates into normal walking. We used 3D kinematic motion analysis as an objectivization method. Objective: The study aimed to objectify changes in basic walk parameters, lower limb joint and pelvic movements in normal walking in people with FAI using 3D kinematic analysis and to compare the results with a group of healthy people. Sample: 21 patients (7 females, 14 males) were selected for the study with the confirmed FAI by clinical examination and X-ray. The control group consisted of 18 healthy probands (8 females, 10 males) in whom the hip joint morphology by MRI was excluded. Methods: All probands underwent walking examination using 3D kinematic motion analysis using the Qaulisys system. Data were processed by the Qualisys Track Manager and the Visual3D software. The subject of the examination was the basic walk parameters, ankle...
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Discrimination measures in credit risk
Polak, Michal ; Pešta, Michal (advisor) ; Zahradník, Petr (referee)
Scoring models represent a fundamental tool for the modern management of credit risk. This is mainly due to a significant development in the field of information technology. Such models are used not only when providing credit, but also in strategies relating to the future management of credit risk, or in strategies connected with enforcing receivables. In my thesis I deal with discrimination measures used in the validation of diversification potential of logistic scoring models. At the beginning, I focus on the term 'risk'. Then, I introduce a basic division of scoring models. Next, I describe the method of scoring logistic regression, I concentrate on estimating parameters, their significance and on testing their relevance. For the measurement and illustration of diversification potential of the model I mention the most commonly used methods such as the Lorenz and ROC curve, the Gini coeficient, the c-statistic as well as the Kolmogorov-Smirnov test. Finally, I apply the theoretical knowledge to real data. I design a scoring model and subsequently compare the discrimination measures which it contains. Powered by TCPDF (www.tcpdf.org)
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Foot and ankle kinematics in patients with femoroacetabular impingement syndrome
Janáková, Daniela ; Zahradník, Petr (advisor) ; Chládek, Petr (referee)
Femoroacetabular impingement syndrome (FAI) is a hip impairment, which is according to recent studies significant contributor to hip osteoarthritis. Current research is dedicated to evaluate movement patterns of hip, pelvis and spine in patients with FAI using a motion analysis capture system. Biomechanics and kinesiology relations between spino-pelvic complex and lower limb joints led us to choose the topic of this thesis. The goal of this study was to define the movements of ankle and foot in patients with FAI syndrome and to compare with asymptomatic control group. To measure the parameters during gait we used Qualisys motion capture system and then the data were processed in Qualisys Track Manager 2020.03. We assessed the movements of ankle, rearfoot and the progression foot angle during the stance phase of gait cycle. Moreover, we measured the step length, gait speed and passive range of motion of the hip in both exploratory groups. In total we examinated 30 subjects, 15 with FAI syndrome and 15 asymptomatic volunteers with physiologic hip condition. We demonstrated three significant between group changes in average ankle range of motion in sagittal plane, foot progression angle and passive range of motion of the hip.
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Univariate difusion stochastic differential equations with applications to financial mathematics
Zahradník, Petr ; Štěpán, Josef (advisor)
In this thesis, the aim is to employ some of the advanced probability and calculus techniques to financial mathematics. In the first chapter some major facts from continuous - time probability theory are presented. In the second chapter, one - dimensional stochastic diferential equations are introduced, we touch upon the questions of existence and uniqueness of solutions in full generality, construct a weak solution to the Engelbert - Schmidt equation and thoroughly present a known procedure called a Feller's test for explosions. In chapter three, focus is directed to a brief presentation of the well known Dirichlet problem. The problem is also interpreted financially, applied to options valuation and related approximations are implemented. The fourth, final, chapter concentrates on the Cox - Ingersoll - Ross model. Techniques derived in the second and third chapters are employed to thoroughly study the model properties.
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Kinematic analysis of locomotor system in persons with abnormal position of the hip joint.
Zahradník, Petr ; Kolář, Pavel (advisor) ; Janura, Miroslav (referee)
Femoroacerabular impingement (FAI) syndrome is a hip joint impairment, which occurs frequently as a result of repeated overloading of the joint in combination with the imperfect orientation of the articulating surfaces. Therefore, it does not respect the biomechanically optimal position of the joint. Currently, many experts consider FAI as an important factor contributing to hip degeneration with the subsequent coxarthrosis. In our research, we evaluated how the FAI translates into normal walking. We used 3D kinematic motion analysis as an objectivization method. Objective: The study aimed to objectify changes in basic walk parameters, lower limb joint and pelvic movements in normal walking in people with FAI using 3D kinematic analysis and to compare the results with a group of healthy people. Sample: 21 patients (7 females, 14 males) were selected for the study with the confirmed FAI by clinical examination and X-ray. The control group consisted of 18 healthy probands (8 females, 10 males) in whom the hip joint morphology by MRI was excluded. Methods: All probands underwent walking examination using 3D kinematic motion analysis using the Qaulisys system. Data were processed by the Qualisys Track Manager and the Visual3D software. The subject of the examination was the basic walk parameters, ankle...
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Influence of anatomical parameters on development of non-traumatical knee pain
Palouš, Vojtěch ; Kautzner, Jakub (advisor) ; Zahradník, Petr (referee)
This thesis focuses on measurement of anatomical parameters of lower limb in patients with non-traumatical anterior knee pain. Theoretical part of this work describes basic anatomical, kinesiological and biomechanical knowledge about lower limb. Also there are described basic non-traumatical pathologies of knee and how to assess them. Methodology: in experimental part there were examined and measured these parameters: Q angel, foot pronation and range of hip rotation of 28 sportsmen, of which 7 had unilateral anterior knee pain and 4 had bilateral anterior knee with no previous traumatic experience of the knee. Assessing of angles was made through photographic goniometry using Adobe Illustrator to measure angles on digital pictures. Results: the work did not confirm any of hypothesis, that a statistically significant deviation would be found in patients with anterior knee pain compared to heathy population in at least one of the measured parameters. However further analysis of measured data showed statistically significant correlations between foot pronation and range of internal hip rotation and Q angle and range of external hip rotation both in patients with anterior knee pain compared to healthy population where no such correlation was found. Conclusion: This work suggests existence of connection between...
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Kinematic analysis of locomotor system in persons with abnormal position of the hip joint.
Zahradník, Petr ; Kolář, Pavel (advisor) ; Janura, Miroslav (referee) ; Havlas, Vojtěch (referee)
Femoroacerabular impingement (FAI) syndrome is a hip joint impairment, which occurs frequently as a result of repeated overloading of the joint in combination with the imperfect orientation of the articulating surfaces. Therefore, it does not respect the biomechanically optimal position of the joint. Currently, many experts consider FAI as an important factor contributing to hip degeneration with the subsequent coxarthrosis. In our research, we evaluated how the FAI translates into normal walking. We used 3D kinematic motion analysis as an objectivization method. Objective: The study aimed to objectify changes in basic walk parameters, lower limb joint and pelvic movements in normal walking in people with FAI using 3D kinematic analysis and to compare the results with a group of healthy people. Sample: 21 patients (7 females, 14 males) were selected for the study with the confirmed FAI by clinical examination and X-ray. The control group consisted of 18 healthy probands (8 females, 10 males) in whom the hip joint morphology by MRI was excluded. Methods: All probands underwent walking examination using 3D kinematic motion analysis using the Qaulisys system. Data were processed by the Qualisys Track Manager and the Visual3D software. The subject of the examination was the basic walk parameters, ankle...
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Promotion of the study programme English in Electrical Engineering and Informatics by means of leaflets: language of advertising in practice
Zahradník, Petr ; Haupt, Jaromír (referee) ; Mihai, Hana (advisor)
Hlavním cílem této semestrální práce je představit typické prvky reklamního diskurzu, poskytnout informace nutné ke klasifikaci různých druhů reklamního sdělení a také krátce představit studijní obor Angličtina v elektrotechnice a informatice. V první části této práce jsou uvedeny základní jazykové principy v rámci reklamního diskurzu. Důraz je kladen zejména na větnou skladbu, tvarosloví a slovní zásobu. Další část práce pojednává o reklamě jako takové. Tato část se zaobírá klasifikací reklamy na základě různých faktorů, ale také tím, jaký má reklama dopad na sociální a ekonomické struktury současného světa. Poslední dvě kapitoly popisují studijní obor Angličtina v elektrotechnice a informatice.
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Evaluation of short-term and long-term effects of surgical treatments in patients with femoroacetabular impingement syndrome
Janáková, Daniela ; Tolar, Jan (advisor) ; Zahradník, Petr (referee)
This thesis is dedicated to femoroacetabular impingement syndrome (FAI), which is lately being related to hip preservation surgery. There are three major types of surgical approaches to address pathological contact of the proximal femur and acetabulum: arthroscopy, surgical hip dislocation and minimally invasive hip surgery. The first part provides summary of hip anatomy, biomechanics and kinesiology. Further, we present current findings about FAI etiology, pathogenesis, clinical examination and management options. The main part introduces findings of up-to-date published studies regarding the surgical outcomes. In the second part we presented three case reports of patients with FAI, who underwent one of the above mentioned surgical procedures. They were repeatedly physically examined and asked to fill in the West Ontario MacMaster Universities Osteoarthritis Index (WOMAC) questionnaire.
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Univariate difusion stochastic differential equations with applications to financial mathematics
Zahradník, Petr ; Štěpán, Josef (advisor)
In this thesis, the aim is to employ some of the advanced probability and calculus techniques to financial mathematics. In the first chapter some major facts from continuous - time probability theory are presented. In the second chapter, one - dimensional stochastic diferential equations are introduced, we touch upon the questions of existence and uniqueness of solutions in full generality, construct a weak solution to the Engelbert - Schmidt equation and thoroughly present a known procedure called a Feller's test for explosions. In chapter three, focus is directed to a brief presentation of the well known Dirichlet problem. The problem is also interpreted financially, applied to options valuation and related approximations are implemented. The fourth, final, chapter concentrates on the Cox - Ingersoll - Ross model. Techniques derived in the second and third chapters are employed to thoroughly study the model properties.
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