National Repository of Grey Literature 106 records found  beginprevious93 - 102next  jump to record: Search took 0.00 seconds. 
Secular trend, inter-population variability and sex estimation with help of variables of human femur.
Švenkrtová, Iva ; Brůžek, Jaroslav (advisor) ; Velemínský, Petr (referee)
Determination sex is one of the most important tasks in the identification of skeletal remains. Previous studies have shown that population differences in size and shape of femora can affect correct sex allocation. This thesis tested the discriminat functions generated from different populations and confirmed population specificity of the femur discriminant functions. Two samples of the identified adult femora for this project was used. First sample originates from the Czech population living in the 1st 20th century (78 males and 81 females) and second sample originates from the Czech population living in the 2nd 20th century (67 males and 35 females). Both samples also help us estimate the influence of secular trend of the femur'variables to the correct sex classification by discriminat functions calculated in the Czech population. The results showed the existence of the secular trend in femora size dimensions. Only the dimensions of the femoral head (vertical head diameter-F18, transverse head diameter-F19 and maximum diameter of the femoral head-MPH) and sagittal subtrochanteric diameter (F10) not chandged significantly during the 20th century. The secular trend has negatively influenced the correct sex classification, always for one subpopulation. Only the dimensions in which the secular trend...
Influence of taphonomic factors on bone and dental tissue degradation.
Lichnerová, Katarína ; Eliášová, Hana (advisor) ; Brůžek, Jaroslav (referee)
Post-mortem decomposition of skeletal remains is a response to the interactive effects of abiotic and biotic environmental factors (eg. climatic factors, the nature of the soil, the influence of water, microorganisms, plants, animals, humans). The present work deals with the effects of the taphonomic factors on skeletal and dental material. Only marginally affects the degradation of soft tissue. It describes changes in the integrity of the skeletal remains deposited on the surface or in the soil. Also discusses the extreme conditions that may be expose bones and teeth in connection with cannibalism or suppression of identity of the individual. Emphasises the importance of the knowledge of taphonomy tissues of the body in the context of archaeology and forensic anthropology.
The Evolution of Menopause and Duration of Reproductive Life-span in Humans and it's Comparison with Social Mammals.
Fuxová, Helena ; Brůžek, Jaroslav (advisor) ; Blažek, Vladimír (referee)
This paper concludes basic information about reproductive life-span in humans, however the special emphasis is placed on a synthesis of available knowledge about the existence and evolution of menopause and postreproductive period. Based on published data, the paper focuses on the occurrence of these phenomena, not only in humans but also in other social mammals. Subsequently, this paper finds out that the termination of reproduction followed by postreproductive life-span is not only present in humans, but similar phenomena can be found also in other taxa. The special attention is given to the primates and the cetaceans, where the menopause phenomenon is being well studied. Moreover, to present a more complex and in-depth view into the topic, it is also crucial to mention a different point of view by the short insight into the existence of the menopause in other vertebrata and invertebrates. Moreover, there are compared phenomena of menopause and postreproductive period of humans and other representatives of the animal kingdom. Bachelor's thesis is the finding that menopause or end of reproduction followed by postreproductive life-span are phenomena more common than it is generally believed. The subsequent goal is a critical look at the main theories about the evolution of menopause in humans (" The...
Sexual size dimorphism in medieval period in Bohemia.
Kaupová, Sylva ; Brůžek, Jaroslav (advisor) ; Dobisíková, Miluše (referee)
Differences in height among human populations or changes in height over time may be associated with different degrees of sexual dimorphism in this feature. This thesis compared the height and sexual size dimorphism (SSD) between two groups of the population of Medieval Bohemia - rural residents and inhabitants of Prague. A sample of 179 adult skeletons from five Prague sites and 175 individuals from four rural sites, dating from the 11th to 14th century, was used. Sex was determined following the principle of primary and secondary sex diagnosis, which enabled the derivation of population-specific discriminant functions using the dimensions of the humerus, femur, tibia and talus. A subsequent analysis of body height did not show statistically significant differences either in height or in SSD between the Prague and the rural part of the population of Medieval Bohemia, despite the major changes which Czech Medieval society went through in the 13th century. Comparing our results with previously published data on the height of the Czech population during the early modern period indicates a statistically significant reduction in the magnitude of sexual size dimorphism in the population of the17th century, particularly associated with a decrease in the height of men. A significantly higher stature of...
Shape sexual dimorphism of the greater sciatic notch on human hip bone.
Nehasilová, Lenka ; Brůžek, Jaroslav (advisor) ; Brukner Havelková, Petra (referee)
The aim of this work is sexual dimorphism quantification of greater sciatic notch profile using 2D geometric morphometrics methods. The curvature was digitized by two different methods - manually with contact digitizer MicroScribe G2 and automatically with software Morphome3cs. Results from each method were comparised and advatages and disadvantages of boths methods were discussed. Target sample of 114 adult specimens of known sex was analyzed. This collection comes from Maxwell Museum of Anthropology, The University of New Mexico, Albuquerque and contains 57 male and 57 female hip bones. For the method verification the test smaple contains 112 adult specimens of known sex was used. This collection comes from Universidad Nacional Autonóma de México (UNAM). This collection contains 56 male and 56 female hip bones. The procrustes analysis, principal components analysis, thin plate spine and discriminant function analysis were used for analysis. We could make a detail description of morphologic differences in greater sciatic notch shape of men and women because of shape visualisation and difference of both group was confirmed by discriminant function analysis. Sex assesment achieves accuracy 92,11% - 98,25% in dependence on used methods and number of semilandmarks.
Shape, size and proportions of lower limb long bones among human populations from Eneolithic to the Modern Era.
Šídová, Markéta ; Velemínský, Petr (advisor) ; Brůžek, Jaroslav (referee)
Differences in the lifestyle of various populations may lead to changes in the shape of the long limb bones. This involves a reaction to the degree of mechanical and environmental stress acting upon these bones. Our work examined changes in the shape, proportions and size of the lower limb long bones (femur, tibia) over roughly the past five thousand years, or more precisely from the later phase of the Early Stone Age up to the 20th century. We studied the femurs and tibias of a total 520 adult individuals − 313 males and 207 females − from seven different periods or rather archaeological cultures. Our evaluation was based on the external, linear dimensions of the bones studied. Biological parameters were evaluated in relation to sexual dimorphism and lateral asymmetry. We paid special attention to the degree of flattening of the proximal third of the femoral and tibial shafts. Sexual dimorphism differed in individual populations. We found the least statistically significant parameters of sexual dimorphism in the oldest, Eneolithic, samples. In contrast, both sexes differed in the greatest number of parameters in the Early Middle Ages. Lateral asymmetry was most frequently demonstrated for the width dimensions in the case of the femoral and tibial diaphyses, which are in complete concurrence with...
Evaluation of ontogenetic development of the mandible using geometric morphometric methods
Kiebelová, Alena ; Velemínská, Jana (advisor) ; Brůžek, Jaroslav (referee)
During ontogeny there are a lot of changes in the entire human skeleton. This thesis deals with shape changes in the mandible, which are caused by genetic, hormonal, as well as mechanical factors. The most important mechanical factors influencing the shape of mandible are development of deciduous and permanent dentition and also development of masticatory muscles. 34 children mandibles of known age and 14 adult mandibles were analysed and compared for this thesis. Data were obtained by scanning coordinates of 36 landmarks using Microscribe G2X, and then were processed by software PAST and Morphologika2 using multivariate statistics (PCA, MANOVA). Geometric morphometrics is used for a detailed analysis of shape changes of the mandible. There is no difference between dental and chronological age. In conclusion, lower jaw narrows during growth, the body extends more in the region of third molars and the ramus grows mainly in the region of condylar process. Chin prominence also occurs during ontogeny. In the group of adult mandibles the variability is caused by coronoid process height and the body width. The hypothesis, that age groups are significantly different from each other, and therefore due to tooth mineralization there are marked shape changes, is confirmed.
Enthesopathies and physical activity in the Great Moravian population (9th-10th century) with regard to social status and living conditions.
Havelková, Petra ; Velemínský, Petr (advisor) ; Brůžek, Jaroslav (referee) ; Macháček, Jiří (referee)
7 ABSTRACT The occurrence of enthesopathies is associated with muscle insertion sites and physical activities. The aim of this work is focused on two basic target areas. In the methodical section, I tested two methods of enthesopathy evaluation (Crubézy, 1988; Villotte, 2006) and I monitored the influence of age and physical stress on the incidence of enthesopathies in a documented skeletal collection from Greece. The main aim was then the evaluation of enthesopathies in the Great Moravian population from the settlement agglomeration Mikulčice-Valy (9th -10th century) using the selected method and the subsequent interpretation of the results attained, taking into consideration the archaeological facts relating to the given locality. Based on the observed degrees of concordance between the repeated evaluations, I used Villotte's method (2006) for final evaluation. I proved the correlation between the prevalence of enthesopathies and age in individuals from a recently documented skeletal collection. I was unable to demonstrate the influence of physical activity on the incidence of enthesopathies. This is apparently due to the small number of individuals with manual and non-manual occupations. In individuals from the Mikulčice settlement agglomeration, I recorded a demonstrable difference between individual...
Molecular Genetic Applications in Archeological and Anthropological Context
Urbanová, Markéta ; Černý, Viktor (advisor) ; Brdička, Radim (referee) ; Brůžek, Jaroslav (referee)
6 Coxcr-usroN The aim of our studywas to establisha laboratoryprotocolfor isolationand analysisof aDNA. By studying three different skeletal collections answersabout sex, kinship and presenceof pathogenicbacteriawere searched. During the course of this thesisnew protocols for aDNA study were developedand continuously optimized'We wereableto evaluateinformationaboutsexof 37 subadultindividuals(.l8'7%)from Mikulčice settlementcemetery(9thcentury)andto confirmpÍesenceof Mycobacteriumlepraeon 2 skeletonsfromŽatec cemetery(l3th century).Subadult skeletonsexaminationbrought interestingresults of extremelyhigher presenceof maleindividuals. Unfortunately,notall aimswerefulťrlled.By establishedprotocolfor aDNA kinshipanalysisit wasnot possibleto retrievesufficientinťormationfor explanationof familial relationshipof individualsfrom thesame doubleburialsite. All acquiredexperienceand establishedprotocols are very valuable and in fururewe supposetheir full utilizationandimorovementin thefield of kinshioanalvsisof aDNA molecule. 28
On the limits and possibilities of the stature estimating from hand and foot measurements (hand stencils and foot impressions).
Havránková, Jiřina ; Dobisíková, Miluše (referee) ; Brůžek, Jaroslav (advisor)
This bachelor essay explains view of methods for stature estimation based on hand and foot dimensions. It appears from this view that regression functions are population specific. I have assessed this fact on the collection of 100 French students and I have applicated specific chosen regression equations on the exact group. For stature estimation the most suitable regression equation was the one created by Agnihotri and col. (2008). It provides the best results in an interval 11 up to 12 cms regarding the actual height. For one of the equations, which is using the length of the left hand and the breadth of the right hand of men, the results of the estimation is even 6 cms regarding the actual height. At the end, I tried to calculate my own equations, which offers the estimation results between 6 - 7 cms for the formulas working with the hand length, the estimation results is between 12 - 13 cms for the formulas using the breadth of the arm.

National Repository of Grey Literature : 106 records found   beginprevious93 - 102next  jump to record:
See also: similar author names
3 Brůžek, Jan
1 Brůžek, Jindřich
2 Brůžek, Josef
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