Relevant bibliographies by topics / Heterogeneous operating environments

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Heterogeneous operating environments'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Heterogeneous operating environments"

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Liu, Yan Fang, Ming Chong Mao, Xiang Yang Xu, and Gang Shi. "Multi-Physics Coupled Thermo-Mechanics Analysis of a Hydraulic Solenoid Valve." Applied Mechanics and Materials 321-324 (June 2013): 102–7. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.102.

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Solenoid valve is complex heterogeneous system involving multi-physics coupling of mechanics, electronics, magnetics, thermotics, etc, whose reliability and life depends largely on the heat generated during the operation. A multi-physics coupled thermo-mechanics model of a hydraulic proportional solenoid valve used in an automatic transmission was built up with the finite element method (FEM), the temperature and thermal deformation of the solenoid valve with different currents under two operating environments was analyzed. The calculated results show that the operating environment and current are important factors leading to thermal failure of solenoid valves. The model has high accuracy because of considering the multi-physics coupling control characteristics of mechanics, electronics, magnetics, thermotics, etc, and so can be used for the reliability design of solenoid valves.
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Sztrik, J., and O. Moeller. "Simulation of machine interference in randomly changing environments." Yugoslav Journal of Operations Research 12, no. 2 (2002): 237–46. http://dx.doi.org/10.2298/yjor0202237s.

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The simulation tool lcpSim can be used to investigate special level crossing problems of queuing systems of type HYPOk / HYPOr / 1 // n embedded in different Markovian environments (recently referred to as Markov modulated ones). Our observed system consists of n heterogeneous machines (requests) and a server that 'repairs' the broken machines according to the most commonly used service disciplines, such as FIFO, LIFO, PPS, HOL, Preemptive Priorities (Resume, Repeat), Transfer, Polling, Nearest. We specify a maximum number of stopped machines for an operating system and our aim is to give the main steady-state performance measures of the system, such as, server utilization, machine utilization, mean waiting times, mean response times, the probability of an operating system and the mean operating time of the system. These values can be calculated by lcpSim level crossing problem Simulation package for different random environment types and service disciplines.
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Bricken, William, and Geoffrey Coco. "The VEOS Project." Presence: Teleoperators and Virtual Environments 3, no. 2 (January 1994): 111–29. http://dx.doi.org/10.1162/pres.1994.3.2.111.

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The Virtual Environment Operating Shell (veos) was developed at University of Washington's Human Interface Technology Laboratory as software infrastructure for the lab's research in virtual environments. veos was designed from scratch to provide a comprehensive and unified management facility to support generation of, interaction with, and maintenance of virtual environments. VEOS emphasizes rapid prototyping, heterogeneous distributed computing, and portability. We discuss the design, philosophy and implementation of veos in depth. Within the Kernel, the shared database transformations are pattern-directed, communications are asynchronous, and the programmer's interface is LISP. An entity-based metaphor extends object-oriented programming to systems-oriented programming. Entities provide first-class environments and biological programming constructs such as perceive, react, and persist. The organization, structure, and programming of entities are discussed in detail. The article concludes with a description of the applications that have contributed to the iterative refinement of the VEOS software.
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Snowdon, David N., and Adrian J. West. "AVIARY:Design Issues for Future Large-Scale Virtual Environments." Presence: Teleoperators and Virtual Environments 3, no. 4 (January 1994): 288–308. http://dx.doi.org/10.1162/pres.1994.3.4.288.

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VR is already evolving away from single user small-scale demonstrators, and inexorably toward sophisticated environments in which many geographically distributed users can perform a diverse range of activities. There will therefore be a pressure to make such environments increasingly general purpose and dynamic in their support of applications, paralleling perhaps the historical evolution of conventional operating systems. It is from speculations about the nature of such a future large-scale VR system that the AVIARY project has developed. AVIARY provides multiple worlds, each with its own set of laws, that may be tailored to suit particular application domains. The overall structure enables a coherent relationship between worlds to be maintained, which is important both for purposes of code reuse, and to aid users in navigating the system. A prototype implementation exists that addresses underlying implementation issues in the AVIARY model, and, in particular, distribution across heterogeneous processor networks, dynamic management of objects and message types within the system, the separation of graphics processing, and the management of spatial extent. Implementations of the prototype have been tested on a Transputer array, and a heterogeneous network of Sun and Silicon Graphics workstations. The system is currently being ported to a 2.4-Gflop KSR-1 parallel supercomputer. This paper reviews approaches to distributed, multi-application VR systems, presents pertinent elements of the AVIARY design, and describes the prototype implementation with particular attention given to the issues of distribution.
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Shmid, Alexander Viktorovich. "Practice and Prospects for Using the Emulator Family of IBM Mainframe Architecture." Proceedings of the Institute for System Programming of the RAS 32, no. 5 (2020): 57–66. http://dx.doi.org/10.15514/ispras-2020-32(5)-4.

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This article describes the family of emulators for IBM mainframe architectures, their development history, functional features and capability, as well as the experience of many years (since 1994) of emulators development and their implementation area. There was sold the relatively simple task (for modern standards) of creating a virtual machine in the VSE/ESA operating system for transferring legacy platform-dependent applications to this target environment. The problem was solved at first for EU computers in Russia, and then for IBM 9221 in Germany and in the other western countries. The transfer was made to the OS/390 environment, and to IBM AIX, quite modern at that time. The virtual execution of any existing IBM mainframe operating systems in the main server OS environments: Linux, Windows, AIX, Z/OS, ZLinux had been provided. There was developed the solution for combining any types of formed virtual computing nodes into heterogeneous geographically distributed computing networks that provide, in particular, multiple mutual redundancy of nodes in the network.
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McGarvey, Ronald G., Andreas Thorsen, Maggie L. Thorsen, and Rohith Madhi Reddy. "Measuring efficiency of community health centers: a multi-model approach considering quality of care and heterogeneous operating environments." Health Care Management Science 22, no. 3 (August 26, 2018): 489–511. http://dx.doi.org/10.1007/s10729-018-9455-5.

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Pugliese, Roberto, Luca Gregoratti, Renata Krempska, Fulvio Billè, Juray Krempasky, Marino Marsi, and Alessandro Abrami. "A novel approach to the control of experimental environments: the ESCA microscopy data-acquisition system at ELETTRA." Journal of Synchrotron Radiation 5, no. 3 (May 1, 1998): 587–89. http://dx.doi.org/10.1107/s0909049597014374.

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An efficient control system is today one of the key points for the successful operation of a beamline at third-generation synchrotron radiation sources. The high cost of these ultra-bright light sources and the limited beam time requires effective instrument handling in order to reduce any waste of measurement time. The basic requirements for such control software are reliability, user-friendliness, modularity, upgradability, as well as the capability of integrating a horde of different instruments, commercial tools and independent pre-existing systems in a possibly distributed environment. A novel approach has been adopted to implement the data-acquisition system of the ESCA microscopy beamline at ELETTRA. The system is based on YASB, a software bus, i.e. an underlying control model to coordinate information exchanges and networking software to implement that model. This `middleware' allows the developer to model applications as a set of interacting agents, i.e. independent software machines. Agents can be implemented using different programming languages and be executed on heterogeneous operating environments, which promotes an effective collaboration between software engineers and experimental physicists.
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MURPHY, JOHN, and JANE GRIMSON. "COOPERATIVE INFORMATION SYSTEMS: INTEROPERABILITY IN HEALTH CARE LEGACY APPLICATIONS." International Journal of Cooperative Information Systems 07, no. 01 (March 1998): 1–17. http://dx.doi.org/10.1142/s0218843098000027.

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We believe that the typical hospital computing environment is especially fruitful as a domain for investigating the problems of interoperability and cooperation. We state this belief as hospital computing environments consist of a heterogeneous collection of autonomous information systems. These systems range from centralised hospital-wide systems, such as patient administration systems, to departmental systems such as pharmacy stock-control, laboratory information systems, accident and emergency systems and so on. Many of these are legacy systems which have been operating for many years and are difficult to integrate and virtually impossible to rewrite. In this article we discuss and assess the work of the Jupiter Project and its successor LIOM (Legacy system Interoperability using Object-oriented Methods).
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Ahmed, Azza E., Phelelani T. Mpangase, Sumir Panji, Shakuntala Baichoo, Yassine Souilmi, Faisal M. Fadlelmola, Mustafa Alghali, et al. "Organizing and running bioinformatics hackathons within Africa: The H3ABioNet cloud computing experience." AAS Open Research 1 (August 7, 2019): 9. http://dx.doi.org/10.12688/aasopenres.12847.2.

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The need for portable and reproducible genomics analysis pipelines is growing globally as well as in Africa, especially with the growth of collaborative projects like the Human Health and Heredity in Africa Consortium (H3Africa). The Pan-African H3Africa Bioinformatics Network (H3ABioNet) recognized the need for portable, reproducible pipelines adapted to heterogeneous computing environments, and for the nurturing of technical expertise in workflow languages and containerization technologies. Building on the network’s Standard Operating Procedures (SOPs) for common genomic analyses, H3ABioNet arranged its first Cloud Computing and Reproducible Workflows Hackathon in 2016, with the purpose of translating those SOPs into analysis pipelines able to run on heterogeneous computing environments and meeting the needs of H3Africa research projects. This paper describes the preparations for this hackathon and reflects upon the lessons learned about its impact on building the technical and scientific expertise of African researchers. The workflows developed were made publicly available in GitHub repositories and deposited as container images on Quay.io.
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Palacios, Filiberto Muñoz, Eduardo Steed Espinoza Quesada, Guillaume Sanahuja, Sergio Salazar, Octavio Garcia Salazar, and Luis Rodolfo Garcia Carrillo. "Test bed for applications of heterogeneous unmanned vehicles." International Journal of Advanced Robotic Systems 14, no. 1 (January 1, 2017): 172988141668711. http://dx.doi.org/10.1177/1729881416687111.

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This article addresses the development and implementation of a test bed for applications of heterogeneous unmanned vehicle systems. The test bed consists of unmanned aerial vehicles (Parrot AR.Drones versions 1 or 2, Parrot SA, Paris, France, and Bebop Drones 1.0 and 2.0, Parrot SA, Paris, France), ground vehicles (WowWee Rovio, WowWee Group Limited, Hong Kong, China), and the motion capture systems VICON and OptiTrack. Such test bed allows the user to choose between two different options of development environments, to perform aerial and ground vehicles applications. On the one hand, it is possible to select an environment based on the VICON system and LabVIEW (National Instruments) or robotics operating system platforms, which make use the Parrot AR.Drone software development kit or the Bebop_autonomy Driver to communicate with the unmanned vehicles. On the other hand, it is possible to employ a platform that uses the OptiTrack system and that allows users to develop their own applications, replacing AR.Drone’s original firmware with original code. We have developed four experimental setups to illustrate the use of the Parrot software development kit, the Bebop Driver (AutonomyLab, Simon Fraser University, British Columbia, Canada), and the original firmware replacement for performing a strategy that involves both ground and aerial vehicle tracking. Finally, in order to illustrate the effectiveness of the developed test bed for the implementation of advanced controllers, we present experimental results of the implementation of three consensus algorithms: static, adaptive, and neural network, in order to accomplish that a team of multiagents systems move together to track a target.
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Dissertations / Theses on the topic "Heterogeneous operating environments"

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Mathur, Abhishek, and n/a. "Multi Agents for Heterogeneous Operating System Environments." University of Canberra. Information Sciences & Engineering, 2007. http://erl.canberra.edu.au./public/adt-AUC20070810.090108.

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As IT industries develop, upgrade and diversify, heterogeneous operating environments running a mix of new and legacy systems become increasingly important. Such environments are currently inadequate due to lack of compatibility with each other. This thesis investigates how agents can be utilised to facilitate such heterogeneous environments, aiding enterprise systems in building bridges between incompatible software and hardware systems. An autonomous agent has independent agency and decision-making astuteness. When placed in heterogeneous environments to interact with other such agents, the consequences of its action and its preferred choice of actions are greatly influenced by actions of other agents interacting in heterogeneous environments. The main objectives of this thesis include examining the roles of agents in heterogeneous operating environments, development of a novel multi agent base architecture and an associated framework for single and heterogeneous environment. The research work also studies the plausible application to test the developed proof of concept by developing application and using the framework that utilises Windows services in a totally incompatible Solaris based Sun Ray ultra thin client environment. The work includes a novel method of modeling agent based communication architecture suitable for correspondence between two inherently different operating systems - Solaris and Microsoft Windows. The circumstances in which coordination or coordination failure occurs between these systems are investigated. The proposed method of agent based communication that can potentially overcome the barriers formed by two completely different software and hardware architectural regimes. An analysis of printing services in MS Windows and Solaris environments, review the age long problem of lack of device drivers for commonly (and cheaply) available Ink Jet printers for Unix (and like) operating systems. A novel method is proposed that uses agents in heterogeneous environment to overcome this problem. A new architecture that utilises Windows based printing services on a Sun Ray ultra thin client is presented to test and evaluate the proof of concept. This thesis is motivated by the need to provide a low cost printing solution to Sun Ray users. Most Windows based desktop users currently have access to variety of low cost printing solutions. Printer vendors ship device drivers only for Windows or at most Macintosh, as other operating systems such as Solaris, MVS, z/OS are used for corporate solutions and low cost desktop printing have not been a major requirement in the past.
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Marques, Francisco Antero Cardoso. "A flexible navigation system for autonomous robots operating in heterogeneous environments." Master's thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/9791.

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Dissertação para obtenção do Grau de Mestre em Engenharia Electrotécnica e de Computadores
This dissertation presents a flexible navigation system for autonomous robot operating in heterogeneous environments. In the proposed system, flexibility occurs at several levels of the navigation system. At the lowest level, proper locomotion modes are selected according to the local context, which includes handling dynamic footprints when computing traversability costs. This flexibility ensures that the kinematic and morphological constraints of the robot are adequately considered when navigating in demanding environments. At the highest level, proper motion planning strategies are selected according to the global context, namely, the expected topology of the environment. This flexibility allows the robot to trade-off, in a context-aware way, accuracy of the planned motions and computational cost. As a result, the complexity of the planner matches the complexity of the environment, which is key to enable a proper management of computational and energetic resources. Following a pragmatic strategy, the robot obtains its global context from off-line generated maps, which are becoming widely available. To validate this idea, a tool for semantic labelling of satellite imagery was developed. Online, the robot obtains its global context extracting the semantic label (e.g.,urban environment) and distribution of expected obstacles associated to its current global position. The proposed system leverages on the well-known Robotics Operating System (ROS) framework for the implementation of the navigation system underpinnings. For extensive validation purposes, a physics-based 3D simulator was used. Moreover, the system was validated over 1 Km long experiments on a physical four-wheeled robot. The results obtained show the ability of the system to ensure safe navigation in heterogeneous environments. This is a result of the ability of the system to exploit context awareness to reconfigure itself when facing transitions among topologically different environment regions. The added level of robustness introduced with the proposed system is expected to foster the application of autonomous robots in socially relevant domains.
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Meyer, Ramsey. "Simple messaging and collaboration system for heterogeneous organizations operating in disaster environments." Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/5514.

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Approved for public release; distribution is unlimited.
A novel communication system for use by a wide variety of first responders in disaster response is described. The system is based primarily on SMS messaging technologies and either indigenous mobile phone service providers or mobile phone service brought in via cellular-on-wheels (COWs), UAVs, rapidly deployed towers, etc. End users use either their own cell phones, running a native SMS application, or low-cost phones that are distributed by a large nongovernmental organization, such as UN OCHA. If a proprietary network is set up, SIM cards are distributed to end users to allow access to the network, or administrators will explicitly allow access via a phone's IMEI number or other access control methods.
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Perez, Jerry Felix. "An Investigation of Run-time Operations in a Heterogeneous Desktop Grid Environment: The Texas Tech University Desktop Grid Case Study." NSUWorks, 2013. http://nsuworks.nova.edu/gscis_etd/273.

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The goal of the dissertation study was to evaluate the existing DG scheduling algorithm. The evaluation was developed through previously explored simulated analyses of DGs performed by researchers in the field of DG scheduling optimization and to improve the current RT framework of the DG at TTU. The author analyzed the RT of an actual DG, thereby enabling other investigators to compare theoretical results with the results of this dissertation case study. Two statistical methods were used to formulate and validate predictive models: multiple linear regression and graphical exploratory data analysis techniques. Using both statistical methods, the author was able to determine that the theoretical model was able to predict the significance of four independent variables of resource fragmentation, computational volatility, resource management, and grid job scheduling on the dependent variables quality of service and job performance affecting RT. After an experimental case study analysis of the DG variables, the author identified the best DG resources to perform optimization of run-time performance of DG at TTU. The projected outcome of this investigation is the improved job scheduling techniques of the DG at TTU.
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Book chapters on the topic "Heterogeneous operating environments"

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Schubert, L., S. Bonfert, and S. Wesner. "Modular Operating Systems for Large-Scale, Distributed, and Heterogeneous Environments." In Heterogeneous Computing Architectures, 33–52. Boca Raton : Taylor & Francis, a CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T&F Informa, plc, 2019.: CRC Press, 2019. http://dx.doi.org/10.1201/9780429399602-2.

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Löhr, Klaus-Peter, Lutz Nentwig, and Joachim Müller. "DAPHNE support for distributed computing in heterogeneous environments." In Progress in Distributed Operating Systems and Distributed Systems Management, 138–46. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/3-540-52609-9_81.

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Bascuñana Muñoz, Alejandro, and Tomás Robles Valladares. "Remote Service Invocation Through Heterogeneous Networks Using Open Environments." In Operations and Management in IP-Based Networks, 39–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11567486_5.

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"Managing Heterogeneous Environments." In Multi-Operating System Networking, 613–26. Auerbach Publications, 1999. http://dx.doi.org/10.1201/9780203997598-47.

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"E-mail and Internet in Heterogeneous Environments." In Multi-Operating System Networking, 831–48. Auerbach Publications, 1999. http://dx.doi.org/10.1201/9780203997598-64.

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"Porting Applications between Heterogeneous Environments/Rewriting Applications." In Multi-Operating System Networking, 111–42. Auerbach Publications, 1999. http://dx.doi.org/10.1201/9780203997598-13.

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Patel, R. B., and Vijay Athavale. "Reliable Computing in Heterogeneous Networks." In Handbook of Research in Mobile Business, Second Edition, 405–21. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-156-8.ch038.

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Mobile computing extends the horizons of conventional computing model to a ubiquitous computing environment that serves users at anytime, anywhere. Most distributed applications and services were designed with the assumption that the terminals were powerful, stationary, and connected to fixed networks. One of the biggest challenges in future application development is device heterogeneity. In the future, users expect to see a rich variety of computing devices that can run applications. These devices have different capabilities in processors, memory, networking, screen sizes, input methods, and software libraries. We also expect that future users are likely to own many types of devices. Depending on users changing situations and environments, they may choose to switch from one type of device, to another that brings the best combination of application functionality and device mobility. Applications, middleware, and systems can be measured in a variety of dimensions, including usability, distributability, integration, conformance to standards, extensibility, internationalizability, manageability, performance, portability, scalability reliability-fault tolerance, and security. The authors call these pervasive attributes, since they can apply to the system as a whole, not just to the system’s components. Mobility brings additional uncertainties, as well as opportunities to provide new services and supplementary information to users in the locations where they find themselves. In general, most application software, operating systems, and network frameworks are intended for more conventional environments, and so the mobile, wireless user has great difficulty exploiting the computational framework as fully as he/she might. There is an emerging consensus among researchers that a new architecture and dynamic framework is an appropriate way to address above problems. This report presents a prototype for secure and reliable computing that will address above issues and can both assist developers to build multi-platform applications that can run on heterogeneous devices and allow a user to move/migrate a running application among heterogeneous devices might be among different networks.
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Flores, A., and M. Polo Usaola. "Applications Suitability on PvC Environments." In Encyclopedia of Mobile Computing and Commerce, 57–62. IGI Global, 2007. http://dx.doi.org/10.4018/978-1-59904-002-8.ch010.

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Pervasive computing (PvC) environments should support the continuity of users’ daily tasks across dynamic changes of operative contexts. Pervasive or ubiquitous computing implies computation becoming part of the environment. Many different protocols and operating systems, as well as a variety of heterogeneous computing devices, are interrelated to allow accessing information anywhere, anytime in a secure manner (Weiser, 1991; Singh, Puradkar, & Lee, 2005; Ranganathan & Campbell, 2003).According to the initial considerations by Weiser (1991), a PvC environment should provide the feeling of an enhanced natural human environment, which makes the computers themselves vanish into the background. Such a disappearance should be fundamentally a consequence not of technology but of human psychology, since whenever people learn something sufficiently well, they cease to be aware of it. This means that the user’s relationship to computation changes to an implicit human-computer interaction. Instead of thinking in terms of doing explicit tasks “on the computer”—creating documents, sending e-mail, and so on—on PvC environments individuals may behave as they normally do: moving around, using objects, seeing and talking to each other. The environment is in charge of facilitating these actions, and individuals may come to expect certain services which allow the feeling of “continuity” on their daily tasks (Wang & Garlan, 2000).Users should be allowed to change their computational tasks between different operative contexts, and this could imply the use of many mobile devices that help moving around into the environment. As a result, the underlying resources to run the required applications may change from wide memory space, disk capacity, and computational power, to lower magnitudes. Such situations could make a required service or application inappropriate in the new context, with a likely necessity of supplying a proper adjustment. However, users should not perceive the surrounding environment as something that constraints their working/living activities. There should be a continuous provision of proper services or applications. Hence the environment must be provided with a mechanism for dynamic applications suitability (Flores & Polo, 2006).
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Bouguettaya, Athman, Brahim Medjahed, Mouorad Ouzzani, and Yao Meng. "Ubiquitous Access to Web Databases." In Web-Powered Databases, 246–65. IGI Global, 2003. http://dx.doi.org/10.4018/978-1-59140-035-6.ch009.

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With the emergence of the Web, there is a need to provide across-the-board transparency for accessing and manipulating data irrespective of platforms, locations, and systems. The challenge is to build an infrastructure to support flexible tools for information space organization, communication facilities, information discovery, content description, and assembly of data from heterogeneous sources. In this chapter, we describe the WebFINDIT system. WebFINDIT builds a scalable and uniform infrastructure for locating and accessing heterogeneous and autonomous databases in large and dynamic environments. One key feature of WebFINDIT is the clustering of Web databases into distributed ontologies. The main advantage of this ontological organization is filtering interactions and reducing the overhead of locating information. Another important feature is the large spectrum of heterogeneity being supported. Heterogeneity appears at different levels, including hardware (Sun and NT), operating system (UNIX and NT), database (Oracle, Informix, DB2, ObjectStore), and communication middleware (CORBA, DCOM, EJB, and RMI).
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Mukherjee, Amitava, Rashid A. Saeed, Sudip Dutta, and Mrinal K. Naskar. "Fault Tracking Framework for Software-Defined Networking (SDN)." In Advances in Wireless Technologies and Telecommunication, 247–72. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-2023-8.ch011.

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The emergence of software-defined networking (SDN) raises a set of fundamental questions, including architectural issues like whether control should be centralized or distributed, and whether control and data planes should be separated. Several open problems exist in SDN space, ranging from architectural questions that are fundamental to how networks scale and evolve to implementation issues such as how we build distributed “logically centralized” control planes. Moreover, since SDN is still in its early stage, there is an opportunity to make fault tracking framework a more integral part of the overall design process. Although SDN's goal is to simplify the management of networks, the challenge is that the SDN software stack itself is a complex distributed system, operating in asynchronous, heterogeneous, and failure-prone environments. In this chapter we will focus on three key areas: 1) SDN architecture, 2) scalable SDN systems to understand which pieces of control plane can be run logically centralized fashions, and 3) fault tracking framework to track down the failures in SDN.
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Conference papers on the topic "Heterogeneous operating environments"

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Kamatar, Alok V., Ryan D. Friese, and Roberto Gioiosa. "Locality-Aware Scheduling for Scalable Heterogeneous Environments." In 2020 IEEE/ACM International Workshop on Runtime and Operating Systems for Supercomputers (ROSS). IEEE, 2020. http://dx.doi.org/10.1109/ross51935.2020.00011.

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Gorsky, S. A., and A. G. Feoktistov. "Static-dynamic algorithm for managing asynchronous computations in distributed environments." In 1st International Workshop on Advanced Information and Computation Technologies and Systems 2020. Crossref, 2021. http://dx.doi.org/10.47350/aicts.2020.07.

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The paper addresses a relevant problem of computation scheduling in scientific applications (distributed applied software packages) executed in distributed environments. Forming an optimal schedule of jobs for executing of applied software (modules) is an NP-hard problem. Therefore, in practice, heuristic methods of scheduling are often used. In this regard, we propose a new static-dynamic algorithm for managing computations in heterogeneous distributed environments. The results of operating the proposed algorithm are simulated in comparison with other scenarios for computing management. They show that applying the algorithm makes it possible to achieve a rational balance between the scheduling time and the computations makespan.
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Lee, Shang-Hsiu, and Marco J. Castaldi. "High Temperature Corrosion Resistance of Different Commercial Alloys Under Various Corrosive Environments." In 15th Annual North American Waste-to-Energy Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/nawtec15-3220.

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High temperature corrosion is a major operating problem because it results in unscheduled shutdowns in Waste-to-Energy (WTE) plants and accounts for a significant fraction of the total operating cost of WTE plants. Due to the heterogeneous nature of municipal solid waste (MSW) fuel and the presence of aggressive elements such as sulfur and chlorine, WTE plants have higher corrosion rates than coal-fired power plants which operate at higher temperature. To reduce corrosion rates while maximizing the heat recovery efficiency has long been a critical task for WTE operators. Past researchers focused on high temperature corrosion mechanisms and have identified important factors which affect the corrosion rate [1–4]. Also, there have been many laboratory tests seeking to classify the effects of these corrosion factors. However, many tests were performed under isothermal conditions where temperatures of flue gas and metal surface were the same and did not incorporate the synergistic effect of the thermal gradient between environment (flue gas) and metal surface. This paper presents a corrosion resistance test using an apparatus that can maintain a well controlled thermal gradient between the environment and the surface of the metals tested for corrosion resistance. Two commercial substrates (steels SA213-T11 and NSSER-4) were tested under different corrosive environments. The post-test investigation consisted of mass loss measurement of tested coupons, observation of cross-sectional morphology by scanning electron microscopy (SEM), and elemental analysis of corrosion products by energy dispersive spectrometry (EDS). The stainless steel NSSER-4 showed good corrosion resistance within the metal temperature range of 500 °C to 630 °C. The alloy steel SA213-T11 had an acceptable corrosion resistance at metal temperatures up to 540 °C, and the performance decreased dramatically at higher temperatures.
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Allen, R. H., S. Nidamarthi, S. P. Regalla, and R. D. Sriram. "Enhancing Collaboration Using an Internet Integrated Workbench." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/dac-8573.

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Abstract We report on our experience using an Internet-based collaborative environment to enhance the design and manufacturing process of a custom-designed artifact transport system (ATS). Specifically, we focus on overcoming the hurdles associated with exchanging heterogeneous information that includes text, graphics, and computer-aided design (CAD) data among 15 to 20 geographically-separated project participants, each with his own unique workstation and operating system. To share this heterogeneous information among the team’s members, which included designers, physicists, manufacturers and managers, we implemented a collaborative workbench (CW) that was designed specifically for platform-independent design and manufacturing collaboration. The workbench consists of two principal parts: an Internet-accessible portion and a platform-specific collaboration notebook. The Internet-accessible portion runs on a local server and consists of a Project Area that contains project-specific information such as drawings, specifications, and schedules, and a Document Vault, which stores files of any type that can be uploaded via client World Wide Web browsers. Based on specifications from the physicists, designers created and represented ATS components and assemblies on their respective CAD systems. The designers published their designs on the CW and informed project team members of the newly available CAD drawings via automatic email. Team members then commented directly on the CW representations of the CAD drawings, and those comments were republished with the drawings. This process continued until team members reached a consensus, or until face-to-face meetings helped resolve conflicting issues. Similar processes occurred with documents such as reports and schedules and with digitized photographs of manufactured components. We conclude that environments like the CW can be effective in helping teams overcome the problems associated with diverse computing environments and heterogeneous data formats, and can be effective in facilitating consensus-based decision making necessary for collaborative design.
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Oparin, G. A., V. G. Bogdanova, and A. A. Pashinin. "Automated tools for the development of microservice compositions for hybrid scientific computations." In The International Workshop on Information, Computation, and Control Systems for Distributed Environments. Crossref, 2020. http://dx.doi.org/10.47350/iccs-de.2020.19.

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In recent years, a significant amount of research is focused on the development of tools for creating composite web-services for solving both business and scientific complex problems. This study discusses tools for building compositions or ensembles of microservices (depending on the method of integration) developed based on the HPCSOMAS framework. These tools are oriented on the application in a package of applied microservices for solving computationally complex problems of structural analysis and parametric synthesis of controlled dynamic systems in a heterogeneous high-performance computing environment. In particular, binary dynamic systems are studied using the Boolean constraint method for both their qualitative analysis and synthesis of laws to control these systems. Creating and executing composite services is carried out on a semantic peer-to-peer network of agents. The HPCSOMAS framework supports two modes of these processes, both the static creation and application of a composite service based on the procedural formulation of the problem and dynamic, based on the declarative formulation. In the first case, agents deployed on the network perform hierarchical control over the execution of the composition of microservices, in the second case, decentralized asynchronous management of the ensemble of microservices. Both operating modes are automated, and the validity of the resulting composite service is checked based on a logical approach. The tools are aimed both at a professional programmer and the end-user, a specialist in the subject domain. The HPCSOMAS framework supports the execution of composite microservices in a hybrid computing infrastructure, which includes both cloud and on-premises resources.
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Volpi, A., and G. Serra. "Weld Overlay of Highly Corrosion Resistant Nickel Chromium Molybdenum Alloys, UNS N06059, on Low Alloy Equipment Operating at High Temperature." In ASME 2018 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/etam2018-6715.

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Corrosion conditions in the Chemical and Oil and Gas Industries are such that equipment must withstand pressure and corrosion at high temperatures. Due to the fact that in many cases only the internal surface is exposed to corrosive attack, and so only that surface needs to be protected, savings on material costs can be achieved by taking advantage of the weld overlay technique. Weld overlay, through the choice of alloy, is selected to resist to the corrosive attack. Parent material can be selected based on the required strength at temperature. In recent years, highly corrosion resistant Nickel Chromium-Molybdenum Alloys have been developed to operate in the most severe corrosive environments. One of the recent developments in this family of materials, is Alloy 59 UNS N06059 that is replacing Hastelloy C-2000 UNS N06200 and Hastelloy C-22 UNS N06022. Nickel-Chromium-Molybdenum alloys are the most versatile nickel alloys, because they contain molybdenum, which protects against corrosion under reducing conditions, and chromium which protects against corrosion under oxidizing conditions. Wrought products produced from these alloys are processed to obtain a homogeneous austenitic grain structure. Weld overlay or weld deposit, due to the fundamental differences in processing compared to base material, result in a more heterogeneous metallurgical grain structure that in general shows however a good level of corrosion resistance. Weld or Weld overlay features are highly dependent on electric parameters, filler metal, technique, base material temperature, etc., and for this reason the general settings of the welding process need to be finalized and tested, with the intent of optimizing all these parameters in order to allow the best corrosion results. A research activity has been carried out by ALFA LAVAL OLMI to define a processes and parameters’ selection in order to obtain a weld deposit with a behavior as close as possible to wrought Alloy 59 base material.
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TOLBERT, M., B. KOEHLER, A. MIDDLEBROOK, J. MANION, I. JAYAWEERA, and D. GOLDEN. "Heterogeneous chemistry and clouds in the HSCT environment." In Aircraft Design and Operations Meeting. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-3159.

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Martin, T. Patrick, David T. Barnard, Ian A. Macleod, Brent Nordin, and R. Mark Fleming. "Remote operation calls in a heterogeneous environment." In the 1988 ACM SIGSMALL/PC symposium. New York, New York, USA: ACM Press, 1988. http://dx.doi.org/10.1145/62453.62472.

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Yip, F., A. K. Y. Wong, P. Ray, and N. Paramesh. "Corporate Security Compliance in a Heterogeneous Environment." In 2006 IEEE/IFIP Network Operations and Management Symposium NOMS 2006. IEEE, 2006. http://dx.doi.org/10.1109/noms.2006.1687637.

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Zhang, Qi, and Raouf Boutaba. "Dynamic workload management in heterogeneous Cloud computing environments." In NOMS 2014 - 2014 IEEE/IFIP Network Operations and Management Symposium. IEEE, 2014. http://dx.doi.org/10.1109/noms.2014.6838288.

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