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Search Results: 1 - 10 of 15451 matches for " Marco Zanini "
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Confian?a organizacional como chave para a coordena??o implícita e para a constru??o do capital intangível
Zanini, Marco;
Cadernos EBAPE.BR , 2007, DOI: 10.1590/S1679-39512007000300008
Abstract: this article provides a contribution to the discussions about the theme interpersonal trust within organizations in the organizational economics perspective. it introduces trust as a central element to the implicit coordination of organizational tasks and its relation with organizational performance. i understand interpersonal trust as a central element for a better understanding of relational contracts. this article illustrates the relevance of trust to the coordination and performance of organizational tasks.
Rela??es de confian?a nas empresas da nova economia informacional: uma avalia??o dos efeitos da incerteza sobre o comportamento organizacional
Zanini, Marco Tulio Fund?o;
Cadernos EBAPE.BR , 2005, DOI: 10.1590/S1679-39512005000400003
Abstract: this article derives from the perspective of the organizational economy to approach the theme of trust as an implicit control mechanism within the companies. the main objective is to establish a relationship between the effects of institutional innovations that characterize a new informational economy and the possible variations of the trust levels within the it and communication industries as well as other companies of more traditional industries of the old economy. the core hypothesis is that the lower levels of trust will probably be identified in these enterprises closest to the paradigm of the new informational economy. therefore, the article implies a set of proposals for a later empiric investigation.
Atypical Calcified Ganglioglioma: A Rare Case Report  [PDF]
Seizo Yamashita, Luiz Antonio Resende, Fernanda M. P. Souza, Marco Zanini, Carlos Clayton, André P. Trindade
Advances in Computed Tomography (ACT) , 2014, DOI: 10.4236/act.2014.31002
Abstract:

Considered rare tumors, gangliogliomas account for 0.4% - 0.9% of intracranial neoplasms. The peak of its incidence occurs between 10 and 20 years of age. These tumors are composed of glial and ganglion cells and they are relatively low-grade neoplasms associated with good prognoses. We report a case of an atypical calcified ganglioglioma in an 18-year-old woman with history of four months of stabbing right-sided parietal headache, paroxysmal. On image studies were noted the presence of thick wall calcification in gangliogliomas. Although rare, this atypical ganglioglioma should be included in the differential diagnosis of lesions occurring in this area of the brain.

Evaluation of two commercial and three home-made fixatives for the substitution of formalin: a formaldehyde–free laboratory is possible
Cristina Zanini, Elisa Gerbaudo, Elisabetta Ercole, Anna Vendramin, Marco Forni
Environmental Health , 2012, DOI: 10.1186/1476-069x-11-59
Abstract: To achieve a “formalin-free laboratory” we tested straightforward-to-make fixatives along with registered reagents offered as formalin substitutes.More than two hundreds specimens were fixed in parallel with in-laboratory made fixatives PAGA (Polyethylenglycol, ethyl Alcohol, Glycerol, Acetic acid), two zinc-based fixatives (ZBF, Z7), and commercially-available alternatives (RCL2 and CellBlock). Tissue micro arrays were used for morphological and immunohistochemical comparison. Extraction of RNA was carried out to evaluate preservation of nucleic acids.Differences compared to formalin fixation were evident in alcohol-based fixatives, mainly restricted to higher stain affinity and considerable tissue shrinkage. Conversely, nuclear detail was superior with these alcohol-based formulas compared to formalin or glyoxale-based recipes. RNA extraction was superior for Z7, PAGA and RCL2 with regard to concentration but relatively comparable regarding quality.Abolition of the human carcinogen formaldehyde from pathology laboratories is possible even in contexts whereby commercial alternatives to formalin are unavailable or are too expensive for routine use, and aspiration devices are lacking or not adequately serviced. The use of known formulations, possibly with simple and not-noxious (“alimentary grade”) constituents, comparable with registered proprietary products, may expand the search for the ideal fixative combining satisfactory morphology with improved preservation of nucleic acids and proteins as well as being easy and safe to dispose of.Fixation is a key step in the practice of diagnostic pathology, and even in modern times, is intimately linked to the use of formaldehyde (HCHO), a gas commercially available in concentrated solution (37%), stabilized with ethanol, and named Formalin. A 10% dilution of concentrated formalin (in tap water or buffers with final concentrations of formaldehyde of approximately 4%) is named 10% formalin [1,2].The main motives for the popu
Trust within Brazilian new economy organizations: an empirical investigation of gender effects benchmarked on Brazilian old economy organizations
Zanini, Marco Tulio;Lusk, Edward J.;Wolff, Birgitta;
BAR. Brazilian Administration Review , 2009, DOI: 10.1590/S1807-76922009000300005
Abstract: it has been suggested that one of the negative aspects of the new economy has been growing organizational survival-risk both at the firm and the sector levels. this precarious positioning of the firm has profoundly changed the work environment resulting in the dissolution of job-definition-boundaries, thereby raising the intensity of work and finally affecting the level and nature of trust in the workplace. this is the starting point for our study. using a questionnaire developed by gillespie, we investigated gender profiles concerning trust in supervisors, peers, and team in the new and the old economies for brazilian managers. the results show that, for the new economy, brazilian women are more willing to give trust to supervisors whereas brazilian men expressed higher levels of trust when dealing with team members. the peer results are mixed. for the old economy, men uniformly express higher levels of trust compared to women over all three reference groups. finally, for gender matched comparisons, those working in the brazilian old economy firms express higher levels of trust compared to their counterparts in the new economy independent of gender or time worked. we conclude by discussing the control implications of the above results.
Confian?a dentro das organiza??es da Nova Economia: uma análise empírica sobre as conseqüências da incerteza institucional
Zanini, Marco Tulio F.;Lusk, Edward J.;Wolff, Birgitta;
Revista de Administra??o Contemporanea , 2009, DOI: 10.1590/S1415-65552009000100006
Abstract: this study investigates the effects of different institutional frameworks on the levels of trust within hierarchies. following the insight into the changing of labour contracts provided by new economy theorists and international labour organization [ilo] reports, this study investigates the possible differences in the levels of trust between two paradigms: the old economy and the new economy. we argue that singular institutional changes which better characterize the new economy in the form of environmental uncertainty set considerable constrains on trust development. by approaching trust as a dependent variable in a cross-industrial comparison, a questionnaire survey was carried out in brazil accessing the levels of trust within seven brazilian private companies. from the literature review and empirical observation of the reality of these organizations, companies were identified and classified into different groups. the study concludes that relative high institutional uncertainty considerably limits the development of trust levels within those companies operating in the new economy.
Trust within Brazilian New Economy Organizations: an Empirical Investigation of Gender Effects Benchmarked on Brazilian Old Economy Organizations
Marco Tulio Zanini,Edward J. Lusk,Birgitta Wolff
BAR. Brazilian Administration Review , 2009,
Abstract: It has been suggested that one of the negative aspects of the New Economy has been growing organizational survival-risk both at the firm and the sector levels. This precarious positioning of the firm has profoundly changed the work environment resulting in the dissolution of job-definition-boundaries, thereby raising the intensity of work and finally affecting the level and nature of trust in the workplace. This is the starting point for our study. Using a questionnaire developed by Gillespie, we investigated gender profiles concerning trust in Supervisors, Peers, and Team in the New and the Old Economies for Brazilian managers. The results show that, for the New Economy, Brazilian women are more willing to give trust to Supervisors whereas Brazilian men expressed higher levels of trust when dealing with Team members. The Peer results are mixed. For the Old Economy, men uniformly express higher levels of trust compared to women over all three reference groups. Finally, for gender matched comparisons, those working in the Brazilian Old Economy firms express higher levels of trust compared to their counterparts in the New Economy independent of gender or time worked. We conclude by discussing the control implications of the above results.
Trust within the Organizations of the New Economy: an Empirical Analysis of the Consequences of Institutional Uncertainty
Marco Tulio F. Zanini,Edward J. Lusk,Birgitta Wolff
Revista de Administra??o Contemporanea , 2009,
Abstract: This study investigates the effects of different institutional frameworks on the levels of trust within hierarchies. Following the insight into the changing of labour contracts provided by New Economy theorists and International Labour Organization [ILO] reports, this study investigates the possible differences in the levels of trust between two paradigms: the Old Economy and the New Economy. We argue that singular institutional changes which better characterize the New Economy in the form of environmental uncertainty set considerable constrains on trust development. By approaching trust as a dependent variable in a cross-industrial comparison, a questionnaire survey was carried out in Brazil accessing the levels of trust within seven Brazilian private companies. From the literature review and empirical observation of the reality of these organizations, companies were identified and classified into different groups. The study concludes that relative high institutional uncertainty considerably limits the development of trust levels within those companies operating in the New Economy.
Os Elementos de Coordena o Informal em uma Unidade Policial de Opera es Especiais
Marco Tulio Zanini,Carmen Pires Migueles,Marcio Colmerauer,Juliana Mansur
Revista de Administra??o Contemporanea , 2013,
Abstract: This article’s objective is to better understand the elements of informal coordination in the management of high performance teams acting in complex and unpredictable scenarios. We present the results of an empirical study in a police special operations unit. We conducted a qualitative and quantitative research, respectively though oral history, in-depth interviews and survey. Our results show that the sense of a common mission, trust relationships and leadership quality are central elements to better explain informal coordination. We observed higher levels of trust between peers, as compared with trust in superiors and teams, as a fundamental constitutive element of the power of the bond found among members. Our analyses also indicate strong relationships between trust in superiors and affective and normative commitment, and the importance of loyalty and pride in membership.
RADICAL FORMATION ON CTMP FIBERS BY ARGON PLASMA TREATMENTS AND RELATED LIGNIN CHEMICAL CHANGES
Stefano Zanini,Carmen Canevali,Marco Orlandi,Eeva-Liisa Tolppa
BioResources , 2008,
Abstract: The changes at molecular level induced by cold argon plasma treat-ments on fibers obtained from chemi-thermo-mechanical pulp (CTMP) fibers were investigated. The radicals formed on CTMP fibers after treatments were identified and quantified by Electron Paramagnetic Resonance (EPR) spectroscopy. The plasma conditions which maximize the formation of radicals on fibers were assessed: after treatment with 0.4 mbar Ar pressure and 75 W radiofrequency power, phenoxy radicals triple their concentration in only 60 s and reach a value 4 times higher than that reported for laccase-catalyzed lignin oxidation. It was found that in plasma-treated fibers, the formation of radicals competes with their coupling. This latter result leads to cross-linkages of the lignin mono-meric units and formation of new intermonomeric C-C and C-O bonds, for the first time assigned to specific molecular interactions through Heteronuclear Single Quantum Coherence (2D-HSQC) spectroscopy and Nuclear Magnetic Resonance spectroscopy of carbon (13C-NMR). These results were confirmed by Nuclear Magnetic Resonance spectros-copy of phosphorous (31P-NMR). The lack of evidences of inter-fiber bond interactions, deduced from Gel Permeation Chromatography (GPC) data, suggests the possible application of plasma treatments for the production of wood fiber-based composites.
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