Made available in DSpace on 2017-06-01T18:29:21Z (GMT). No. of bitstreams: 1 renata_lopes_arcoverde.pdf: 584232 bytes, checksum: 4e24390bbce6fd6d08e5d19a7779dfa1 (MD5) Previous issue date: 2013-04-23 / Some fields of knowledge have been highlighted in the study of self-harm, such as medicine (especially psychiatry), psychology and psychoanalysis. These areas differentiate the acts of harming oneself as part of a specific culture or religious ritual from those recognized as pathologies or dysfunctional behavior. The last ones are considered as acts of self-destruction produced by individuals who need assistance so that they can stop self-injuring. Partimos do pressuposto de que a autolesão é um modo de subjetivação construído e transformado por diferentes discursos dependendo do contexto sociocultural em que acontece. Assuming that self-harm is a form of subjectivity produced and transformed by different speeches, depending on the social context in which it takes place, this study intends to analyze, using the post-structuralism perspective, messages left on Orkut virtual communities by people who self-harm and discuss their experiences in that social network. Results indicate discourses in common with the aforementioned fields of knowledge and with religion, as well as definitions of self-harm as art, a privileged way of expressing emotions or even a source of pleasure. Some internet users claim for the right to use their bodies as they please since it is meant to be their territory of intervention and their only, what can be understood as a movement of resistance to the rule of having a docile body. In conclusion, it is understood that the subjects involved with self-harm relate to their bodies and with virtual communities as means of producing identities. / Alguns saberes têm se destacado no estudo da autolesão, entre eles a medicina, (notadamente a psiquiatria), a psicologia e a psicanálise. Estes campos do conhecimento diferenciam os atos de ferir a si mesmo como parte de uma cultura específica ou ritual religioso das práticas autolesivas que são atribuídas a patologias ou disfunções. Estas últimas são consideradas como atos de autodestruição produzidos por pessoas que precisam de intervenções de especialistas para que deixem de ferir-se. Partimos do pressuposto de que a autolesão é um modo de subjetivação construído e transformado por diferentes discursos dependendo do contexto sociocultural em que acontece. Assim, a intenção deste trabalho é analisar, à luz da perspectiva pós-estruturalista, mensagens de pessoas que se autolesionam e discutem a sua experiência em comunidades virtuais da rede social Orkut. Resultados indicam que além dos discursos em comum com os citados campos de saber e com a religião, há ainda quem defina a autolesão como arte, maneira privilegiada de expressão das emoções ou mesmo fonte de prazer. Alguns internautas reivindicam o corpo como território de intervenção pertencente unicamente a si próprios, reclamando o direito de utilizá-lo como bem entendem, no que se pode caracterizar como um movimento de resistência à norma de ter que apresentar um corpo dócil. Por fim, compreende-se que os sujeitos envolvidos nessa prática relacionam-se com seu corpo e com as comunidades de que participam enquanto locais de produção de identidades.

The purpose of this project was to explore perceptions of effective components in adolescent suicide prevention programs among San Bernardino school counselors. The stress model and the mental health model are the two models implemented in suicide prevention programs.

This diploma thesis deals with the position of diagnostics of reinforced concrete structures in the building industry. The theoretical part deals with the research of methods for practical part of this thesis and basic imagine of procedure. The practical part deals with the survey of an existing building, quality of concrete and reinforcement of elements. The last part is the static calculation of the selected element for the intended use of the building. At the end, the results of the construction and technical survey are evaluated.

Concretes reinforced by, using distributed steel reinforcements (fibres) are known as fibre-concrete. In case of disturbances or accidents of concrete structures reinforced with wires, it is necessary to carefully examine the actual implementation of dispersed reinforcement. Fibre concretes belong to modern building materials whose possible applications have not been fully utilized so far. Have been mainly used for floor structures loaded with factory halls and warehouses. Recently, thanks to well-known physical and mechanical properties of fibre-concrete, there were numerous attempts of designers, and namely investors, to utilize this kind of materials for support structures either. Favorable properties of wire-concrete can be utilized if there is a necessity to increase the resistance of concrete to stresses exceeding its strength, cyclic stress or impact stress. Daily practice shows to prove that the applications of fibre-concrete in such structures lead to the economic success. Necessary condition for successful application of steel fiber reinforced concrete in constructions however consists in its uniform dispersion, a homogeneous distribution of the wires throughout the volume of the structure. In case of inappropriate processing and deposition of the mixture during the manufacturing process fiber-concrete structures, the fibers are often unevenly distributed. Wires itself represent unfavourably shaped mixture components and they are extremely deteriorating its workability. A grouping of wires may be encountered as well, which reduces the overall homogeneity and the quality of steel fiber-concrete structures. If the homogeneity of fibre-concrete is not kept, the material possess different properties in various parts of the structure (for example, tensile strength), which can lead to defects in the structure (generation and development of cracks). The relevant lower reliability of the structure which is caused by unequal distribution of fibres (wires) in concrete volume can lead to damage of the property as well as the safety and the human lives can be jeopardized. Hence it is necessary to secure the effective control of the fibre-concrete homogeneity in ready support fibre-concrete structures. Contemporary homogeneity control is still ongoing on fresh blends, but if the fibre-concrete hardened and is a part of the construction, no known reliable methods are currently in available to test the homogeneity of the fibre-concrete on the structure without its destruction. The methods developed to control the concentration of wires in wire-concrete structures are based mostly on magnetic or electromagnetic properties of wires. The thesis deals with the development of the magnetic method in situ using permanent magnets for monitoring the distribution of fibers in hardened steel fiber-concrete structures. The test principle is based on measurements of the changes in magnetic field strength of permanent magnets which are induced by a change in wire distribution in steel fibre-concrete structure. Test is characterized as a so called local- failure- test using a small diameter core drill. In this sense it is a semi-destructive method.

The doctoral thesis deals with a non-destructive testing method (NDT) designed to evaluate the uniformity of distribution and determination of the concentration of steel fibres in steel fiber reinforced concrete (SFRC). At present, no non-destructive method is available in the field of diagnostics of building structures to assess the concentration and the homogeneity of SFRC. The Institute of Building Testing (SZK FAST BUT Brno) has several diagnostic devices, but their utility for the evaluation of selected parameters of SFRC has not proven during the research activity. This knowledge led to the design of a new measuring instrument in cooperation with the Institute of Theoretical and Experimental Electrical Engineering of the Faculty of Electrical Engineering and Communication (UTEE FEKT BUT in Brno) and the methodology for evaluation of these parameters. The proposed NDT method has been experimentally tested and verified for its utility for the evaluation of SFRC in building practice.

The diploma thesis deals with influence of the used adhesive to large format tiles properties after installation. Properties on large format tiles were monitored by ultrasonic pulse velocity method. Hydraulic setting adhesives were tested in second part. Strength and modulus of elasticity were tested. The development of shrinkage over time was also monitored. The results were summarized in tabular and graphical form and were examined by simple statistical analysis to determine resulting conclusions.

This diploma thesis deals with welding of two dissimilar materials by laser. The samples were welded by direct beam guidance and wobbling, with and without using high alloy filler material and with the use of a diffusion barrier in the form of nickel. Welding was done with different shielding atmospheres. Nondestructive (VT, PT, UT-PA, RT) and destructive tests were performer (tensile test at room and elevated temperatures, microhrardness). Metalography was suplemented by EDX analysis of selected elements.

This master’s thesis deals with the determination of dynamic modulus of elasticity non-destructive methods of brick body. The test samples were laboratory-made from two types of brick earth and further were used cotouts from the full brick types clinker. For measuring were used ultrasonic impulse and resonant-impact method.

This master thesis gives overview of non-destructive tests of concrete and provides detailed information concerning the acoustic and electromagnetic emission during monitoring of concrete failure. Conducted loading tests of plain concrete specimens are described in the thesis together with the performed numerical simulations of these tests in the software ATENA. The simulation results of concrete failure are analysed in detail and compared with the experimental results recording failure processes with the help of acoustic and electromagnetic emission. The majority of simulation results in software ATENA 3D show good agreement with the recorded data.

The master´s thesis deals with concrete properties and it introduces problematics of building survey. In each part the study deals with diagnostic methods used for building construction. Then it closely examines selected methods, which are used for recognisability of steel reinforcement in concrete. In the practical part I conducted two engineering surveys of reinforced concrete industrial buildings. The main aims were to identify the position of reinforcement in selected elements of crane runway and to evaluate the quality of used concrete. The last part of thesis is focused on static assessment of short corbel of crane runway.