Lebenserinnerungen /

Mode of access: Internet.

Holley's steel reports.

Binder's title.

Deutschland und O��sterreich-Ungarn im Jahre 1914.

Mode of access: Internet.

Der Albanipsalter in Hildesheim und seine beziehung zur symbolischen kirchensculptur des XII. jahrhunderts.

Anhang I. Beschreibung der einzelnen initialen.--Anhang II. Verzeichniss der ganzseitigen bilder der handschrift.--Anhang III. Verzeichniss der monatsbilder und verse im kalender.

Elektrolytische Abscheidung wasserzersetzender Metalle aus ihren Salzlosungen /

Thesis (doctoral)--Georg-Augusts-Universitat zu Gottingen, 1904.

The creators of the age of steel.

Introduction. - Sir Henry Bessemer. - Sir William Siemens. - Sir Joseph Whitworth. - Sir John Brown. - Mr. S.G. Thomas. - Mr. G.J. Snelus.

A proposed scheme for comprehensive characterization of the measured geometric distortion in magnetic resonance imaging using a three-dimensional phantom

Recently, a 3-dimensional phantom that can provide a comprehensive, accurate and complete measurement of the geometric distortion in MRI has been developed. In this paper, a scheme for characterizing the measured geometric distortion using the 3-D phantom is described. In the proposed scheme, a number of quantitative measures are developed and used to characterize the geometric distortion. These measures encompass the overall and spatial aspects of the geometric distortion. Two specific types of volume of interest, rectangular parallelepipeds (including cubes) and spheres are considered in the proposed scheme. As an illustration, characterization of the geometric distortion in a Siemens 1.5T Sonata MRI system using the proposed scheme is presented. As shown, the proposed scheme provides a comprehensive assessment of the geometric distortion. The scheme can be potentially used as a standard procedure for the assessment of geometric distortion in MRI. (C) 2004 American Association of Physicists in Medicine.

Geometric distortion in clinical MRI systems - Part I: evaluation using a 3D phantom

Recently, a 3D phantom that can provide a comprehensive and accurate measurement of the geometric distortion in MRI has been developed. Using this phantom, a full assessment of the geometric distortion in a number of clinical MRI systems (GE and Siemens) has been carried out and detailed results are presented in this paper. As expected, the main source of geometric distortion in modern superconducting MRI systems arises from the gradient field nonlinearity. Significantly large distortions with maximum absolute geometric errors ranged between 10 and 25 mm within a volume of 240 x 240 x 240 mm(3) were observed when imaging with the new generation of gradient systems that employs shorter coils. By comparison, the geometric distortion was much less in the older-generation gradient systems. With the vendor's correction method, the geometric distortion measured was significantly reduced but only within the plane in which these 2D correction methods were applied. Distortion along the axis normal to the plane was, as expected, virtually unchanged. Two-dimensional correction methods are a convenient approach and in principle they are the only methods that can be applied to correct geometric distortion in a single slice or in multiple noncontiguous slices. However, these methods only provide an incomplete solution to the problem and their value can be significantly reduced if the distortion along the normal of the correction plane is not small. (C) 2004 Elsevier Inc. All rights reserved.

AN��LISE SIST��MICA DAS RELA����ES DE PODER EM GRUPOS DE LIDERAN��A OFICIAL DE IGREJAS DE GOVERNO CONGREGACIONAL: Estudo de Caso em Igrejas Menonitas de Curitiba

A pesquisa a seguir tem o poder como objeto de estudos, especificamente na forma de rela����es de poder em conselhos diretores (pastoral e administrativo) de igrejas menonitas em Curitiba. A forma presumida de governo dessas igrejas �� historicamente congregacional, isto ��, as assembl��ias das respectivas igrejas s��o supremas e ��ltimas nas delibera����es. A metodologia de pesquisa �� sociol��gica, indutiva, funcionalista, com tend��ncias fenomenol��gicas, tendo como perspectiva principal a teoria sist��mica e seus recursos de pesquisa. A teoria geral dos sistemas orienta os fundamentos da pesquisa, a teoria dos sistemas sociais �� o arcabou��o da pesquisa. O m��todo de pesquisa �� a observa����o-participante com registros em v��deo e ��udio, transcri����o, an��lise e elabora����o de conclus��es. A t��cnica de pesquisa citada demonstrou-se eficaz e ��til para o levantamento de dados em pesquisas de campo que tratam de grupos e suas fun����es diferenciadas em agremia����es eclesi��sticas. Os objetivos buscam identificar a din��mica sist��mica nas reuni��es dos conselhos observados, bem como identificar o processo das rela����es de poder nos mesmos. As hip��teses lan��adas como ponto de partida afirmam que a teoria sist��mica em qualquer perspectiva �� observ��vel, bem como os elementos (conselheiros) das rela����es de poder se demonstram inconscientes de seus atos de poder. As hip��teses principais e secund��rias foram confirmadas pela observa����o-participante, a saber: a pesquisa verifica a hip��tese geral de que mesmo igrejas e seus sistemas sociais evidenciam princ��pios sist��micos segundo a teoria geral dos sistemas e a teoria dos sistemas sociais de Niklas Luhmann. As hip��teses espec��ficas verificam se os conselheiros dos grupos de lideran��a evidenciam consci��ncia do poder exercido e do poder impl��cito em suas fun����es e pap��is; se os grupos formais, eleitos pela assembl��ia exercem poder de fato ou se existe influ��ncia do poder informal; se existe uma correla����o, entre o poder formal e as fronteiras r��gidas , o poder informal e a fronteira difusa ; se �� poss��vel trabalhar preventivamente e interventivamente atrav��s do conceito de rela����es de poder e os princ��pios sociais sist��micos. As igrejas menonitas de Curitiba de maneira geral preservam tra��os de governo congregacional, mas, a transi����o para estilos de governo pastorc��ntricos e autocr��ticos a partir dos conselhos observados �� um fato e parece irrevers��vel. Aparentemente a causalidade desse movimento surge no contexto social metropolitano e suas implica����es, mais do que numa mudan��a estrategicamente planejada pelas lideran��as. Portanto, a transi����o parece ser cultural. Ali��s, as transforma����es sociais das tradi����es menonitas s��o diretamente proporcionais �� sua inclus��o e incultura����o no contexto social em que se situam, confirmando assim os princ��pios sist��micos da sociedade em geral.(AU)

Autonomic response in depersonalisation disorder

Background Emotional-processing inhibition has been suggested as a mechanism underlying some of the clinical features of depersonalization and/or derealization. In this study, we tested the prediction that autonomic response to emotional stimuli would be reduced in patients with depersonalization disorder. Methods The skin conductance responses of 15 patients with chronic depersonalization disorder according to DSM-IV, 15 controls, and 11 individuals with anxiety disorders according to DSM-IV, were recorded in response to nonspecific elicitors (an unexpected clap and taking a sigh) and in response to 15 randomized pictures with different emotional valences: 5 unpleasant, 5 pleasant, and 5 neutral. Results The skin conductance response to unpleasant pictures was significantly reduced in patients with depersonalization disorder (magnitude of 0.017 ��siemens in controls and 0.103 ��siemens in patients with anxiety disorders; P = .01). Also, the latency of response to these stimuli was significantly prolonged in the group with depersonalization disorder (3.01 seconds compared with 2.5 and 2.1 seconds in the control and anxiety groups, respectively; P = .02). In contrast, latency to nonspecific stimuli (clap and sigh) was significantly shorter in the depersonalization and anxiety groups (1.6 seconds) than in controls (2.3 seconds) (P = .03). Conclusions In depersonalization disorder, autonomic response to unpleasant stimuli is reduced. The fact that patients with depersonalization disorder respond earlier to a startling noise suggests that they are in a heightened state of alertness and that the reduced response to unpleasant stimuli is caused by a selective inhibitory mechanism on emotional processing.