Permweb: remote parallel and distributed volume visualization

In this paper we present a system for visualizing volume data from remote supercomputers �PermWeb�. We have developed both parallel volume rendering algorithms, and the World Wide Web software for accessing the data at the remote sites. The implementation uses Hypertext Markup Language �HTML�, Java, and Common GatewayIn terface �CGI � scripts to connect World Wide Web �WWW � servers�clients to our volume renderers. The front ends are interactive Java classes for speci�cation of view, shading, and classi�cation inputs. We present performance results, and implementation details for connections to our computing resources at the University of California Santa Cruz including a MasPar MP-2, SGI Reality Engine-RE2, and SGI Challenge machines. We apply the system to the task of visualizing trabecular bone from �nite element simulations. Fast volume rendering on remote compute servers through a web interface allows us to increase the accessibility of the results to more users. User interface issues, overviews of parallel algorithm developments, and overall system interfaces and protocols are presented. Access is available through Uniform Resource Locator �URL

PermWeb: remote parallel and distributed volume visualization

In this paper we present a system for visualizing volume data from remote supercomputers (PermWeb). We have developed both parallel volume rendering algorithms, and the World Wide Web software for accessing the data at the remote sites. The implementation uses Hypertext Markup Language (HTML), Java, and Common Gateway Interface (CGI) scripts to connect World Wide Web (WWW) servers/clients to our volume renderers. The front ends are interactive Java classes for specification of view, shading, and classification inputs. We present performance results, and implementation details for connections to our computing resources at the University of Cahfornia Santa Cruz including a MasPar MP-2, SGI Reality Engine-RE2,and SGI Challenge machines. We apply the system to the task of visualizing trabecular bone from finite element simulations. Fast volume rendering on remote compute servers through a web interface allows us to increase the accessibility of the results to more users. User interface issues, overviews of parallel algorithm developments, and overall system interfaces and protocols are presented

Integrated Visualization of Realtime Environmental Data

This paper presents the visualization effort of the REINAS (Realtime Environmental Information Network Analysis System) project. REINAS is a continuing engineering research and development system with the goal of designing, developing and testing an operational prototype system for data acquisition, data management, and visualization. It includes a growing web of networked remote and in-situ instruments, a federated geographical database, and an extensible visualization interface. REINAS focuses on the needs of both oceanographers and meteorologists who monitor realtime data or analyze retrospective data. The visualization system of REINAS provides an integrated access via a distributed database to a host of different realtime data sources, numerical model forecasts, as well as more static data sets such as coastline and terrain information. It is designed as a modular tool-based system where users activate the appropriate visualization tools to generate different types of visualizatio..

Sodium bicarbonate infusion in patients undergoing orthotopic liver transplantation: a single center randomized controlled pilot trial

BACKGROUND: Liver transplantation-associated acute kidney injury (AKI) carries significant morbidity and mortality. We hypothesized that sodium bicarbonate would reduce the incidence and/or severity of liver transplantation-associated AKI. METHODS: In this double-blinded pilot RCT, adult patients undergoing orthotopic liver transplantation were randomized to an infusion of either 8.4% sodium bicarbonate (0.5 mEq/kg/h for the first hour; 0.15 mEq/kg/h until completion of surgery); (n = 30) or 0.9% sodium chloride (n = 30). Primary outcome: AKI within the first 48 h post-operatively.RESULTS: There were no significant differences between the two treatment groups with regard to baseline characteristics, model for end-stage liver disease and acute physiology and chronic health evaluation (APACHE) II scores, and pre-transplantation renal function. Intra-operative factors were similar for duration of surgery, blood product requirements, crystalloid and colloid volumes infused and requirements for vasoactive therapy. Eleven patients (37%) in the bicarbonate group and 10 patients (33%) in the sodium chloride group developed a post-operative AKI (p = 0.79). Bicarbonate infusion attenuated the degree of immediate post-operative metabolic acidosis; however, this effect dissipated by 48 h. There were no significant differences in ventilation hours, ICU or hospital length of stay, or mortality. CONCLUSIONS: The intra-operative infusion of sodium bicarbonate did not decrease the incidence of AKI in patients following orthotopic liver transplantation

Codification of the common law : letter of Jeremy Bentham, and report of Judges Story, Metcalf and others

Preface signed: D.D. FieldCover titleMode of access: Internet