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Search Results: 1 - 10 of 12164 matches for " Stephen Muench "
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Outsourcing of Public-Services - Forms and Limitations
Michael Muench
Creative and Knowledge Society , 2011, DOI: 10.2478/v10212-011-0010-8
Abstract: Purpose of the article is to show how public services can be outsourced from communities and what legal, organizational or other limitations may have to be taken into account. Methodology used for this article is literature research, analysis and comparison. An in-depth look into the present status of research and literature will be interconnected to the basic research in this matter that has been done from the 1970's to the 1990's. Scientific aim is to show the potential of the process as being important and helpful in creating better community-service and meanwhile relieve the communities from organizational and financial burdens that are more difficult to carry than ever before. Findings are that we have to determine between the different municipal economic activities and the legal basis of these activities. The intervening public-service is a prominent example for the restrictive regulatory system it is set in but also is seen as having a big potential for cooperation and outsourcing by contracting-out. Contrary to that the service-rendering public-service is less regulated and more open to a market approach. There are different spheres for these economic activities to take place. Different reasons for outsourcing depend on the specific sphere a certain task belongs to and can include economic, fiscal and political aspects. Two big groups of tasks are annex-tasks from within the public-service and characteristic public-services. There can be outsourcing by commissioning or by using submissions. With different legal forms of the outsourced entities and the legal limits that are set for every different kind of structure, it is clear that there is no solution that always fits all the needs and that this has to be carefully taken into account. Conclusions are that there is a high potential and big successes when outsourcing is done well planned and as a strategic activity. A number of legal issues and other limitations always has to be respected.
Classification of Emergency Scenarios
Mathieu Muench
Computer Science , 2011,
Abstract: In most of today's emergency scenarios information plays a crucial role. Therefore, information has to be constantly collected and shared among all rescue team members and this requires new innovative technologies. In this paper a classification of emergency scenarios is presented, describing their special characteristics and common strategies employed by rescue units to handle them. Based on interviews with professional firefighters, requirements for new systems are listed. The goal of this article is to support developers designing new systems by providing them a deeper look into the work of first responders.
Length measurement in accelerated systems
Bahram Mashhoon,Uwe Muench
Physics , 2002, DOI: 10.1002/1521-3889(200208)11:7<532::AID-ANDP532>3.0.CO
Abstract: We investigate the limitations of length measurements by accelerated observers in Minkowski spacetime brought about via the hypothesis of locality, namely, the assumption that an accelerated observer at each instant is equivalent to an otherwise identical momentarily comoving inertial observer. We find that consistency can be achieved only in a rather limited neighborhood around the observer with linear dimensions that are negligibly small compared to the characteristic acceleration length of the observer.
Flexibility within the Rotor and Stators of the Vacuolar H+-ATPase
Chun Feng Song, Kostas Papachristos, Shaun Rawson, Markus Huss, Helmut Wieczorek, Emanuele Paci, John Trinick, Michael A. Harrison, Stephen P. Muench
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0082207
Abstract: The V-ATPase is a membrane-bound protein complex which pumps protons across the membrane to generate a large proton motive force through the coupling of an ATP-driven 3-stroke rotary motor (V1) to a multistroke proton pump (Vo). This is done with near 100% efficiency, which is achieved in part by flexibility within the central rotor axle and stator connections, allowing the system to flex to minimise the free energy loss of conformational changes during catalysis. We have used electron microscopy to reveal distinctive bending along the V-ATPase complex, leading to angular displacement of the V1 domain relative to the Vo domain to a maximum of ~30°. This has been complemented by elastic network normal mode analysis that shows both flexing and twisting with the compliance being located in the rotor axle, stator filaments, or both. This study provides direct evidence of flexibility within the V-ATPase and by implication in related rotary ATPases, a feature predicted to be important for regulation and their high energetic efficiencies.
For?as de mordida relacionadas a próteses parciais removíveis inferiores
PELLIZZER, Eduardo Piza;MUENCH, Antonio;
Revista de Odontologia da Universidade de S?o Paulo , 1998, DOI: 10.1590/S0103-06631998000400016
Abstract: the purpose of this study was to determine the biting forces of individuals wearing classes i, ii or iii partially removable mandibular dentures. upper jaws presented fixed bridges, classes i, ii or iii partially removable dentures, or complete dentures. measurements of biting forces were obtained by a gnathodynamometer. the conclusions were: classes i and ii presented low biting forces, specially far from the last abutment tooth; when the opposite arcade was a complete denture, biting forces were low; males presented higher biting forces than females; natural molars and bicuspids presented higher biting forces with class iii than with classes i or ii.
Redu??o da for?a de reten??o e abertura de grampos a barra em "I" de Roach e sua correla??o
MUZILLI, Carlos Alberto;MUENCH, Antonio;
Revista de Odontologia da Universidade de S?o Paulo , 1999, DOI: 10.1590/S0103-06631999000200015
Abstract: the purpose of this research was to determine the retention drop of i-bar clasps, their possible opening during mechanical cycling and their correlation. two co-cr alloys were used and the design of clasps were: short-thin; short-thick; long-thin; long-thick. clasps were also partially covered or not with resin. measurements were made at the initial stage and after 20 thousand cycles. the results led to the following conclusions: the alloys presented similar retention drop; opening of the several types of clasps were similar, but retention drop was minor on long-thin clasp and major on short-thick ones; resin did not influence the opening of clasps but increased retention drop; correlation between retention drop and opening of clasps was not significant.
Microinfiltra??o em dentes decíduos em fun??o de materiais restauradores e condicionamento ácido
BUSSADORI, Sandra Kalil;MUENCH, Antonio;
Revista de Odontologia da Universidade de S?o Paulo , 1999, DOI: 10.1590/S0103-06631999000400009
Abstract: the purpose of this research was to evaluate microleakage on proximal restorations of primary teeth, using four materials (dyract, vitremer, z100 and fuji ii lc). acid etching was performed in only one group. proximal cavities were prepared with the following measures (mm): height, 4; width, 3; depth, 2. restoring was performed according to manufacturer?s instructions, and specimens were stored in distilled water for seven days, at 37oc. afterwards, thermal cycling was performed (700 cycles at 5 and 55oc, for one minute in each temperature). specimens were then immersed in 0.5% methylene blue solution, and prepared for evaluation. the results led to the following conclusions: there were great differences of scores between materials, 0.1 (dyract) and 4.0 (fuji ii lc); vitremer and z100 presented similar values (respectively, in scores, 1.7 and 1.6); fuji ii lc presented the largest microleakage, which decreased with the acid etching.
ESTUDO DA RETEN??O ENTRE RESINA ACRíLICA PARA BASE DE DENTADURA E DENTES DE RESINA ACRíLICA
FAJARDO, Renato Salviato;MUENCH, Antonio;
Revista de Odontologia da Universidade de S?o Paulo , 1997, DOI: 10.1590/S0103-06631997000200008
Abstract: an investigation was carried out to evaluate the bonding strength between acrylic teeth and heat-cured denture acrylic resin. the teeth were fixed in resin blocks and lathe milled to a cylinder shape of 5 mm of diameter. a wax pattern with the same diameter was adapted on the top of the cylinder and then invested in a flask. following the conventional denture base resin procedures, the wax pattern was eliminated and heat-cured resin was packed. the variables were: two acrylic teeth brands; two resin phases (full dough and rubber); cleaning or not of the flask with detergent; application or not of monomer over the teeth before resin packing. after polymerization specimens were stored in water at 37oc, for 2 weeks. tests were performed by tensile loads. the results showed that teeth brands and resin phases did not influence data; the use of monomer or detergent increased strengths, and when used together the effects were cumulative.
For as de mordida relacionadas a próteses parciais removíveis inferiores
PELLIZZER Eduardo Piza,MUENCH Antonio
Revista de Odontologia da Universidade de S?o Paulo , 1998,
Abstract: A pesquisa teve como objetivo determinar as for as de mordida de 73 indivíduos, por meio de um gnatodinam metro. Os pacientes eram portadores de próteses parciais removíveis inferiores classes I, II ou III. A arcada antagonista era prótese, parcial removível ou fixa, ou total. Os resultados permitiram concluir que: as selas de extremidade livre, principalmente em suas posi es extremas, conduziram a for as de mordida muito baixas; o envolvimento de prótese total, também, conduziu a for as de mordida baixas; o sexo masculino alcan ou valores maiores que o feminino; com prótese parcial removível classe III, os dentes naturais molares e pré-molares desenvolveram valores maiores do que com classes I e II.
Microinfiltra o em dentes decíduos em fun o de materiais restauradores e condicionamento ácido
BUSSADORI Sandra Kalil,MUENCH Antonio
Revista de Odontologia da Universidade de S?o Paulo , 1999,
Abstract: A pesquisa teve como objetivo avaliar a microinfiltra o em restaura es de quatro materiais (Dyract, Vitremer, Z100 e Fuji II LC), em dentes decíduos, realizando ou n o condicionamento ácido. Foram feitas dez restaura es (5 OM e 5 OD) para cada condi o experimental. As cavidades tinham as dimens es (mm): 4 de altura, 3 de largura e 2 de profundidade. Os materiais foram manipulados conforme instru es dos fabricantes. Os dentes restaurados, após sete dias de armazenagem foram submetidos à ciclagem térmica (700 ciclos a 5 e 55oC, com um minuto em cada banho). Em seqüência os corpos-de-prova foram preparados para a imers o em azul de metileno a 0,5%, pH 7,2, por quatro horas, após o que foram preparados para a avalia o do grau de infiltra o. Os resultados permitiram concluir que: foi grande a diferen a de escores entre materiais (de infiltra o nula, 0, a 4 máxima); médias de 0,1 (Dyract) a 4,0 (Fuji II LC); os materiais Vitremer e Z100 n o diferiram entre si e se encontraram com valores entre os outros dois; o condicionamento ácido influiu apenas com o material Fuji II LC.
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