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Realistic hair rendering in Autodesk Maya
Svoboda, Tomáš ; Křivánek, Jaroslav (advisor) ; Vorba, Jiří (referee)
This thesis describes a real-time hair rendering in 3D animation and modeling software Autodesk Maya. The renderer is part of the Stubble project a - Maya plug-in for hair modeling. The presented renderer provides a high-quality interactive preview that allows fast hair modeling without the need for rendering in slow off-line renderers. The goal of this work is to create a renderer that can generate images in real-time that are as close as possible to the output of the 3Delight renderer - a plug-in for Maya that is based on RenderMan standards.
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Hair as a mirror. Social and cultural dimensions of hair symbolism
Kernová, Michaela ; Czumalo, Vladimír (advisor) ; Soukup, Martin (referee)
We focus on hair as a symbol of personality, cultural and social influence and the object of ritual ceremonies.1 Hair is not only a vitally important part of human body but it is an important cultural phenomenon and serves as important cultural artifact, because it is simultaneously public (visible to everyone), personal (biologically linked to the body), and highly malleable to suit cultural and personal preferences. Hair - whether present or absent, restored or removed, abundant or scarce, long or short, bound or unbound, dyed or natural - marks a person as clearly as a speech, clothing, and smell. Hair tells a lot about every man, about his age, social and family status, his sexual availability and desirability, about his interests, his character, his political stance and religious preferences, his roots, background, his membership in some subculture and about the fashion and the norms of the period (and his conformability or inadaptability). It is a perfect culture- anthropological topic becauce every culture has particular rules and norms how to dispose of hair. Social and cultural influence on hairstyling could be asserted by means of fashion (mild form) or more serious forms of restrict orders (even written as the laws and directions) or just by cultural norms which set the looks of "normal,...
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Representation of selected elements in human hair
Jochimová, Eva ; Janoušková, Eva (referee) ; Zemanová, Jana (advisor)
Hair is an excellent matrix for monitoring trace elements and minerals in the body. To long-term changes in concentration of elements in the body are reflected in their value in her hair, so the assessment of the organism from the mineral analysis of hair is a very suitable method. This method is widely used in toxicological testing and forensics. This work deals with the analysis of Mg, K, Fe, Zn, Mn, Se, As, Cd and Pb in 100 samples by ICP-MS. It is a male hair samples with the age range 19 – 74 years. Analysis of hair revealed that concentrations of individual elements are moving in a narrow range of values. Values of older age category are in some case significantly deflective.
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Design of women epilator
Sakalová, Michaela ; Buganská, Tamara (referee) ; Tomášková, Veronika (advisor)
My bachelor´s thesis is divided into two parts. I devote myself to present condition of knowledge in my first part where is history and development of depilatory up to nowadays. There is analysis of depilation´s technique and methods IPL in detail. It follows analysis of problem and determination goal of thesis where is description of current depilatory´s style in the market. In the second part I created my own style of depilatory for women, its description in detail, and structural technical solution. The final design of depilatory is simple, pure and it is inspired by stone. Total design contains base with drive, which was designed for depilatory in order design will be match up.
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Problems, benefits and limitations of the determination of trace elements in hair.
ŽIŽKOVÁ, Věra
The thesis focuses on an evaluation of own experience in determining trace elements in hair and on gathering literature data from this area. The thesis concurrently attempts to answer the question of whether the determination of trace elements in hair is always relevant and beneficial or whether it poses certain limitations. The determination of trace elements in hair presents a number of advantages (i.e. easy and non-invasive sample collection, sample durability, small quantity) and it allows researchers to obtain otherwise hardly accessible retrospective information on the condition of the human body over a longer time horizon, often extending over several years. However, the determination of trace elements in hair also has its drawbacks and it requires researchers to resolve multiple problems. The use of hair cosmetics, for example, may have a potentially negative effect and there is the possible risk of hair contamination in the external or working environment. Therefore, when performing hair analysis, the first step is to clean (wash) the hair in an adequate manner so that external contaminants are removed as much as possible while endogenous elements are left intact. For this purpose, the methods recommended by IAEA, which include repeated washing and rinsing with the use of water and acetone, are often applied. The second critical step is hair mineralization, i.e. conversion to a solution. The common risks associated with this procedure are possible element loss due to e.g. evaporation caused by heat on one side and sample contamination by used reagents on the other side. Microwave mineralization with concentrated HNO3 and H2O2 additives seems as an ideal procedure in this respect. The own hair analysis may be effected by means of polarography or mass spectrometry with inductively coupled plasma. Nevertheless, the most frequently implemented method employs atomic absorption spectroscopy, namely flame atomisation for sufficiently high concentrations and electrothermal atomisation for low concentrations. Furthermore, method validation and standardisation are necessary for obtaining relevant information. For example, trueness should be verified through interlaboratory crosschecks (almost unavailable in the Czech Republic for the time being) or by using available reference material (e.g. BCR CRM 397). Precision is verified rather easily by repetitive homogenous sample analysis. In contrast to the discussed issues, commercial advertisements promise trouble-free, simple and easy, and sometimes even miraculous mapping of the health condition with distinct results and recommendations in the form of various food supplements. All may be naturally obtained after the payment of a specific amount (often paid repeatedly). How to answer, after summarizing data gathered from literature and own experience, the presented basic question on whether hair analysis is beneficial and generally applicable. In many cases, the answer may be yes. The thesis details examples of successful application when obtaining retrospective data on high expositions to Pb, Ni, Cd, Hg, and Fe: lead intoxication in a patient due to the long-term intake of a herbal concentrate containing lead, multiple-week monitoring of nickel content in the hair of a volunteer after a one-week exposition in an NiSO4 production environment, verification of Fe loss in a hemato-oncology patient, lead intoxication of an entire family as a result of long-term use of poor quality tableware, lead intoxication in historical painting conservators. As regards the commercial use of the individual result of the general population, it still seems rather problematic and the answer to the basic question is no. The determination of trace elements in hair is not beneficial and it cannot be generally applied that easily.
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Occurrence of mercury in the hair of school children.
HLADÍKOVÁ, Alena
The target of the thesis was to summarize the present knowledge to the topic of occurrence of mercury in hairs of the age categories of respondents defined in advance and to evaluate experimentally the load of the human organism by mercury. It was necessary to acquire a sufficient amount of hairs of children of school-age from the selected locality, to determine the total mercury amount in these samples and to evaluate the achieved results from the viewpoint of the toxic load. Within the bachelor thesis, 90 samples of human hairs of nine various age categories in the range from seven to nineteen years (of respondent age) were tested. In each age category, there were 50% samples of the male and 50% samples of female population. Moreover a questionnaire was made up filled in by each participating person. The determination of the total mercury contents was performed on the one-purpose spectrophotometer AMA-254. Means for the total mercury concentration moved deeply under the permitted limit values. Even the highest established mercury value which was 0,38554 mg/kg was under the limit. Using the one-way ANOVA (F2,87=5,4364; p<0,05) in STATISTICA 7 program, it was proved based on the reviewed influence of factors on the level of mercury in the body, that the mercury concentration depends on the consumption rate of the freshwater fish.
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The Turnover of Personal Effects as a Nursing Staff's Problem
PEČENKOVÁ, Ladislava
The Turnover of Personal Effects as a Nursing Staff´s Problem The subject of death is part of life. For nursing staff, a very difficult and psychologically very demanding situation and part of their work is having to onform the next-of-kin that their relative´s life has ended. Conveying such news requires good ethical and communication skills on the part of the nurses. In addition to psychological stress, there are other aspects that have to be dealt with, e.g., communication as such, as well as proprietary and family relation with the next-of-kin. The objective of my research was to identify the problems that nursing staff members encounter when turning personal effects of the deceased over to the next-of-kin. With this objective in mind, I formulated my first hypothesis. The nurses´ primary problem during turnover of personal effects is communication. Secondly, I wanted to find out about the nurses´ preparedness for communication with next-of-kin and for turnover of personal effects. Finally, I wanted to see, whether the nurses needed anything to be able to handle the process adequately. For addressing the latter question, I created a second hypothesis. The nurses´ perception of the process of turnover of personal effects depends on the suitability of the environment. This undergraduate thesis is divided into two parts: a theoretical and a practical one. In the theoretical part, man´s death as well as care for the dying and the dead is described from historical and present-day perspective. Various rituals, legal steps, communication problems, and their effect on nurses are described. A quantitative survey was taken using the technique of hard-copy questiinnaires. The questionnaire was anonymous and contained 34 questions. It was addressed to the nursing staff in oncology, internal medicine, surgery, and geriatric hospital wards, as well as psychiatricasylums and homes for the elderly in the Vysočina and South-Bohemian Regions. The results of my survey refuted the first and confirmed the second hypothesis of mine. The thesis also myps the problems that nurses in these wards encounter most frequently. The nurses´ suggestions can be useful to managements of medical and social institutions seeking practical solutions for facilitating and improving the quality of the process of turning over the personal effects of he deceased.
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