Download or read book Extending a Java Virtual Machine to Dynamic Object oriented Languages written by Pape, Tobias and published by Universitätsverlag Potsdam. This book was released on 2013 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of AUTOSAR standard documents at Carmeq GmbH written by Hebig, Regina and published by Universitätsverlag Potsdam. This book was released on 2016-01-11 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the captured MDE history of Carmeq GmbH, in context of the project Evolution of MDE Settings in Practice. The goal of the project is the elicitation of MDE approaches and their evolution.
Download or read book Batch regions written by Pufahl, Luise and published by Universitätsverlag Potsdam. This book was released on 2014-10-09 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Business process automation improves organizations’ efficiency to perform work. In existing business process management systems, process instances run independently from each other. However, synchronizing instances carrying similar characteristics, i.e., sharing the same data, can reduce process execution costs. For example, if an online retailer receives two orders from one customer, there is a chance that they can be packed and shipped together to save shipment costs. In this paper, we use concepts from the database domain and introduce data views to business processes to identify instances which can be synchronized. Based on data views, we introduce the concept of batch regions for a context-aware instance synchronization over a set of connected activities. We also evaluate the concepts introduced in this paper with a case study comparing costs for normal and batch processing.
Download or read book Proceedings of the 7th Ph D Retreat of the HPI Research School on Service oriented Systems Engineering written by Meinel, Christoph and published by Universitätsverlag Potsdam. This book was released on 2014-10-09 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design and Implementation of service-oriented architectures imposes a huge number of research questions from the fields of software engineering, system analysis and modeling, adaptability, and application integration. Component orientation and web services are two approaches for design and realization of complex web-based system. Both approaches allow for dynamic application adaptation as well as integration of enterprise application. Commonly used technologies, such as J2EE and .NET, form de facto standards for the realization of complex distributed systems. Evolution of component systems has lead to web services and service-based architectures. This has been manifested in a multitude of industry standards and initiatives such as XML, WSDL UDDI, SOAP, etc. All these achievements lead to a new and promising paradigm in IT systems engineering which proposes to design complex software solutions as collaboration of contractually defined software services. Service-Oriented Systems Engineering represents a symbiosis of best practices in object-orientation, component-based development, distributed computing, and business process management. It provides integration of business and IT concerns. The annual Ph.D. Retreat of the Research School provides each member the opportunity to present his/her current state of their research and to give an outline of a prospective Ph.D. thesis. Due to the interdisciplinary structure of the Research Scholl, this technical report covers a wide range of research topics. These include but are not limited to: Self-Adaptive Service-Oriented Systems, Operating System Support for Service-Oriented Systems, Architecture and Modeling of Service-Oriented Systems, Adaptive Process Management, Services Composition and Workflow Planning, Security Engineering of Service-Based IT Systems, Quantitative Analysis and Optimization of Service-Oriented Systems, Service-Oriented Systems in 3D Computer Graphics sowie Service-Oriented Geoinformatics.
Download or read book Cloud security mechanisms written by Neuhaus, Christian and published by Universitätsverlag Potsdam. This book was released on 2014-10-09 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cloud computing has brought great benefits in cost and flexibility for provisioning services. The greatest challenge of cloud computing remains however the question of security. The current standard tools in access control mechanisms and cryptography can only partly solve the security challenges of cloud infrastructures. In the recent years of research in security and cryptography, novel mechanisms, protocols and algorithms have emerged that offer new ways to create secure services atop cloud infrastructures. This report provides introductions to a selection of security mechanisms that were part of the "Cloud Security Mechanisms" seminar in summer term 2013 at HPI.
Download or read book HPI Future SOC Lab Proceedings 2012 written by Meinel, Christoph and published by Universitätsverlag Potsdam. This book was released on 2014 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: The “HPI Future SOC Lab” is a cooperation of the Hasso-Plattner-Institut (HPI) and industrial partners. Its mission is to enable and promote exchange and interaction between the research community and the industrial partners. The HPI Future SOC Lab provides researchers with free of charge access to a complete infrastructure of state of the art hard- and software. This infrastructure includes components, which might be too expensive for an ordinary research environment, such as servers with up to 64 cores. The offerings address researchers particularly from but not limited to the areas of computer science and business information systems. Main areas of research include cloud computing, parallelization, and In-Memory technologies. This technical report presents results of research projects executed in 2012. Selected projects have presented their results on June 18th and November 26th 2012 at the Future SOC Lab Day events.
Download or read book HPI Future SOC Lab written by Meinel, Christoph and published by Universitätsverlag Potsdam. This book was released on 2015-06-03 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: The “HPI Future SOC Lab” is a cooperation of the Hasso-Plattner-Institut (HPI) and industrial partners. Its mission is to enable and promote exchange and interaction between the research community and the industrial partners. The HPI Future SOC Lab provides researchers with free of charge access to a complete infrastructure of state of the art hard- and software. This infrastructure includes components, which might be too expensive for an ordinary research environment, such as servers with up to 64 cores. The offerings address researchers particularly from but not limited to the areas of computer science and business information systems. Main areas of research include cloud computing, parallelization, and In-Memory technologies. This technical report presents results of research projects executed in 2013. Selected projects have presented their results on April 10th and September 24th 2013 at the Future SOC Lab Day events.
Download or read book Weak conformance between process models and synchronized object life cycles written by Meyer, Andreas and published by Universitätsverlag Potsdam. This book was released on 2015-06-09 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Process models specify behavioral execution constraints between activities as well as between activities and data objects. A data object is characterized by its states and state transitions represented as object life cycle. For process execution, all behavioral execution constraints must be correct. Correctness can be verified via soundness checking which currently only considers control flow information. For data correctness, conformance between a process model and its object life cycles is checked. Current approaches abstract from dependencies between multiple data objects and require fully specified process models although, in real-world process repositories, often underspecified models are found. Coping with these issues, we introduce the concept of synchronized object life cycles and we define a mapping of data constraints of a process model to Petri nets extending an existing mapping. Further, we apply the notion of weak conformance to process models to tell whether each time an activity needs to access a data object in a particular state, it is guaranteed that the data object is in or can reach the expected state. Then, we introduce an algorithm for an integrated verification of control flow correctness and weak data conformance using soundness checking.
Download or read book Embedded Operating System Projects written by Hentschel, Uwe and published by Universitätsverlag Potsdam. This book was released on 2014 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: In today’s life, embedded systems are ubiquitous. But they differ from traditional desktop systems in many aspects – these include predictable timing behavior (real-time), the management of scarce resources (memory, network), reliable communication protocols, energy management, special purpose user-interfaces (headless operation), system configuration, programming languages (to support software/hardware co-design), and modeling techniques. Within this technical report, authors present results from the lecture “Operating Systems for Embedded Computing” that has been offered by the “Operating Systems and Middleware” group at HPI in Winter term 2013/14. Focus of the lecture and accompanying projects was on principles of real-time computing. Students had the chance to gather practical experience with a number of different OSes and applications and present experiences with near-hardware programming. Projects address the entire spectrum, from bare-metal programming to harnessing a real-time OS to exercising the full software/hardware co-design cycle. Three outstanding projects are at the heart of this technical report. Project 1 focuses on the development of a bare-metal operating system for LEGO Mindstorms EV3. While still a toy, it comes with a powerful ARM processor, 64 MB of main memory, standard interfaces, such as Bluetooth and network protocol stacks. EV3 runs a version of 1 1 Introduction Linux. Sources are available from Lego’s web site. However, many devices and their driver software are proprietary and not well documented. Developing a new, bare-metal OS for the EV3 requires an understanding of the EV3 boot process. Since no standard input/output devices are available, initial debugging steps are tedious. After managing these initial steps, the project was able to adapt device drivers for a few Lego devices to an extent that a demonstrator (the Segway application) could be successfully run on the new OS. Project 2 looks at the EV3 from a different angle. The EV3 is running a pretty decent version of Linux- in principle, the RT_PREEMPT patch can turn any Linux system into a real-time OS by modifying the behavior of a number of synchronization constructs at the heart of the OS. Priority inversion is a problem that is solved by protocols such as priority inheritance or priority ceiling. Real-time OSes implement at least one of the protocols. The central idea of the project was the comparison of non-real-time and real-time variants of Linux on the EV3 hardware. A task set that showed effects of priority inversion on standard EV3 Linux would operate flawlessly on the Linux version with the RT_PREEMPT-patch applied. If only patching Lego’s version of Linux was that easy... Project 3 takes the notion of real-time computing more seriously. The application scenario was centered around our Carrera Digital 132 racetrack. Obtaining position information from the track, controlling individual cars, detecting and modifying the Carrera Digital protocol required design and implementation of custom controller hardware. What to implement in hardware, firmware, and what to implement in application software – this was the central question addressed by the project.
Download or read book Advances in Persistent Object Systems written by Ron Morrison and published by Morgan Kaufmann. This book was released on 1999-01-22 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the biennial International Workshops on Persistent Object Systems.
Download or read book ECOOP 98 Object Oriented Programming written by Eric Jul and published by Springer Science & Business Media. This book was released on 1998-07-08 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 12th European Conference on Object-Oriented Programming, ECOOP'98, held in Brussels, Belgium, in July 1998. The book presents 24 revised full technical papers selected for inclusion from a total of 124 submissions; also presented are two invited papers. The papers are organized in topical sections on modelling ideas and experiences; design patterns and frameworks; language problems and solutions; distributed memory systems; reuse, adaption and hardware support; reflection; extensible objects and types; and mixins, inheritance and type analysis complexity.
Download or read book Proceedings of the 2002 ACM SIGPLAN International Conference on Functional Programming ICFP 02 written by and published by Pearson Education. This book was released on 2002 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Systems Computing Sciences and Software Engineering written by Tarek Sobh and published by Springer Science & Business Media. This book was released on 2007-09-27 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Systems, Computing Sciences and Software Engineering This book includes the proceedings of the International Conference on Systems, Computing Sciences and Software Engineering (SCSS’05). The proceedings are a set of rigorously reviewed world-class manuscripts addressing and detailing state-of-the-art research projects in the areas of computer science, software engineering, computer engineering, systems sciences and engineering, information technology, parallel and distributed computing and web-based programming. SCSS’05 was part of the International Joint Conferences on Computer, Information, and Systems Sciences, and Engineering (CISSE’05) (www. cisse2005. org), the World’s first Engineering/Computing and Systems Research E-Conference. CISSE’05 was the first high-caliber Research Conference in the world to be completely conducted online in real-time via the internet. CISSE’05 received 255 research paper submissions and the final program included 140 accepted papers, from more than 45 countries. The concept and format of CISSE’05 were very exciting and ground-breaking. The PowerPoint presentations, final paper manuscripts and time schedule for live presentations over the web had been available for 3 weeks prior to the start of the conference for all registrants, so they could choose the presentations they want to attend and think about questions that they might want to ask. The live audio presentations were also recorded and were part of the permanent CISSE archive, which also included all power point presentations and papers. SCSS’05 provided a virtual forum for presentation and discussion of the state-of the-art research on Systems, Computing Sciences and Software Engineering.
Download or read book Dynamic Load Balanced Multicast for Data intensive Applications on Clouds written by Dileep Keshava Narayana and published by Dileep Keshavanarayana. This book was released on 2019-01-04 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: ISBN:9781793156068 Contents · Chapter 1: Introduction……………………………………………………………….01 1.1 Motivation…………………………………………………………………………..02 1.2 Statement of the Problem…………………………………………………………...03 · Chapter 2: Literature survey…………………………………………………………07 2.1 Previously Published Papers………………………………………………………..07 2.2 Existing Work………………………………………………………………………13 · Chapter 3: Proposed method…………………………………………………………14 3.1 Proposed Method…………………………………………………………………...14 3.2 System Requirements Specification ……………………………………………….14 Functional Requirements…………………………………………………………..15 Non Functional Requirements……………………………………………………..15 User Characteristics………………………………………………………………..16 Output Requirements………………………………………………………………16 Input Requirements………………………………………………………………..16 Software Requirements……………………………………………………………16 Hardware Requirements…………………………………………………………...17 3.3 Block diagram……………………………………………………………………...18 System Architecture……………………………………………………………….19 3.4 System Design…………………………………………………………………….19 Dataflow Diagram………………………………………………………………..19 Flowcharts………………………………………………………………………..20 Context Analysis Diagram……………………………………………………….25 Use case diagram…………………………………………………………………25 State diagram……………………………………………………………………..27 · Chapter 4: Detailed design of the Project……………………………………….….28 4.1 Algorithm………………………………………………………………………….28 Non Steal Algorithm……………………………………………………………...28 Steal Algorithm…………………………………………………………………...28 4.2 Interfacing and Implementation…………………………………………………...28 User Interface……………………………………………………………………..28 Implementation……………………………………………………………………29 Modules…………………………………………………………………………...29 Java………………………………………………………………………………..29 Java Database Connectivity……………………………………………………….33 Java RMI…………………………………………………………………………..37 Java Socket programming…………………………………………………………37 · Chapter 5: Testing of the Project……………………………………………..……..40 5.1 Testing Objectives………………………………………………………………….40 5.2 Testing Principles…………………………………………………………………..40 5.3 Testing Design……………………………………………………………………..40 Whitebox Testing………………………………………………………………….40 Blackbox testing…………………………………………………………………...41 5.4 Code Testing………………………………………………………………………..41 5.5 Testing Strategies…………………………………………………………………...41 Unit testing…………………………………………………………………………42 Integration Testing………………………………………………………………….42 Validation Testing………………………………………………………………….43 5.6 System Testing………………………………………………………………………45 Security Testing…………………………………………………………………….45 Performance Testing………………………………………………………………..45 · Chapter 6: Results and Discussions…………….…………………………………….46 6.1 Snap Shots…………………………………………………………………………..46 Non Steal…………………………………………………………………………...45 Steal…………………………………………………………………………….......56 6.2 Applications…………………………………………………………………………62 6.3 Constraints…………………………………………………………………………..62 · Chapter 7: Conclusion and Scope for future Enhancement ……………………….63 References………………………………………………………………………..........64
Download or read book Self Organizing Architectures written by Danny Weyns and published by Springer. This book was released on 2010-07-17 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the refereed post-conference proceedings of the First International Self-Organizing Architectures Workshop (SOAR) in Cambridge, UK, in September 2009. The book includes 9 revised papers, which were selected from 17 submissions of the workshop, as well as 4 invited papers. The papers cover a broad range of topics related to self-organizing architectures, including self adaptive architectures, decentralized architectures, nature-inspired approaches, and learning approaches.
Download or read book Object Oriented Technology ECOOP 98 Workshop Reader written by Serge Demeyer and published by Springer. This book was released on 2003-07-31 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the time of writing (mid-October 1998) we can look back at what has been a very successful ECOOP’98. Despite the time of the year – in the middle of what is traditionally regarded as a holiday period – ECOOP'98 was a record breaker in terms of number of participants. Over 700 persons found their way to the campus of the Brussels Free University to participate in a wide range of activities. This 3rd ECOOP workshop reader reports on many of these activities. It contains a careful selection of the input and a cautious summary of the outcome for the numerous discussions that happened during the workshops, demonstrations and posters. As such, this book serves as an excellent snapshot of the state of the art in the field of object oriented programming. About the diversity of the submissions A workshop reader is, by its very nature, quite diverse in the topics covered as well as in the form of its contributions. This reader is not an exception to this rule: as editors we have given the respective organizers much freedom in their choice of presentation because we feel form follows content. This explains the diversity in the types of reports as well as in their lay out.
Download or read book Distributed Object Oriented Architectures written by Josef Stepisnik and published by Diplomica Verlag. This book was released on 2007 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document intends to offer a detailed discussion of selected distributed object-oriented architectures at conceptual level. The first part of the discussion offers a comprehensive overview of the Socket architecture in Java 2 and Berkeley UNIX and the distributed object model of Java Remote Method Invocation and the Common Object Request Broker Architecture. The second part concludes the discussion with a comparative study of selected features with emphasis on the Common Object Request Broker Architecture and Java Remote Method Invocation. Major Issues Include The TCP/IP Protocol Suite. We provide an introductory overview of the TCP/IP protocol suite and its architecture including layers and protocols. The TCP/IP architecture is based on three concepts: processes, layers and protocols. Sockets in Berkeley Unix. We present the Berkeley UNIX socket architecture in relation to the Internet communication domain and illustrate connection-oriented and a connectionless models of communication. Sockets in Java 2. We describe the Java 2 socket architecture, outline selected socket operations, introduce related packages and classes and conclude with a framework for a connection-oriented and connectionless model of communication. Remote Method Invocation in Java 2. We present a distributed object model in Java RMI, provide an overview of related interfaces, classes and packages and discuss security related issues. We conclude with the development of a framework for a distributed object application. Common Object Request Broker Architecture. We introduce a distributed object model for the Common Object Request Broker Architecture and outline design concepts including the Interface Definition Language and the Interoperable Naming Service. We conclude with the development of a framework for a distributed object application. Comparative Study of Distributed Architectures. We present a comparative study of socket architectures and distributed object models introduced in part o
