Monitoring distributed object and component communication

This thesis presents our work in the area of monitoring distributed software applications (DSAs). We produce three main results: (1) a design approach for building monitoring systems, (2) a design of a system for MOnitoring Distributed Object and Component Communication (MODOCC) behavior in middleware-based applications, and (3) a proof-of-concept implementation of this system

Monitoring extensions for component-based distributed software

This paper defines a generic class of monitoring extensions to component-based distributed enterprise software. Introducing a monitoring extension to a legacy application system can be very costly. In this paper, we identify the minimum support for application monitoring within the generic components of a distributed system, necessary for rapid development of new monitoring extensions. Furthermore, this paper offers an approach for design and implementation of monitoring extensions at reduced cost. A framework of basic facilities supporting the monitoring extensions is presented. These facilities handle different aspects critical to the monitoring process, such as ordering of the generated monitoring events, decoupling of the application components from the components of the monitoring extensions, delivery of the monitoring events to multiple consumers, etc.\ud The work presented in this paper is being validated in the prototype of a large distributed system, where a specific monitoring extension is built as a tool for debugging and testing the application behaviour.\u

ПРОБЛЕМИ МОРАЛЬНОГО ВИХОВАННЯ У ТВОРЧІЙ СПАДЩИНІ СОФІЇ РУСОВОЇ. (The Problems of Moral Education in the Creative Heritage of Sophiia Rusova.)

У статті висвітлюються окремі погляди Софії Русової на проблеми морального виховання на основі аналізу творчої спадщини педагога. (The article focuses on some of S. Rusova's views on the problems of moral development on the basis of analyses of the educator's scientific works.

Monitoring of distributed component interactions

We have describe a generic monitoring approach that can be used to enhance the quality of distributed component software. The generality of the approach is achieved through using reflective technology, i.e. CORBA Interceptors, CORBA POA and Java 2 features. A drawback of using interceptors is the fact that their interfaces have not been standardised so far. However, the process of standardisation is ongoing and has recently resulted in an OMG Joint Revised Submission called Portable Interceptors. Although the Java 2 API enables discovery of ‘forks’ in the execution, we find it lacking functionality for the purpose of discovering synchronisation points (e.g., ‘joins’) within multithreaded components

TINA components used for service dubscription and deployment

This paper presents a TINA-based services platform for deploying and provisioning of services, especially services supporting dynamic communication processes between individuals, such as required for distributed teamwork. The paper gives an overview of the platform architecture, and discusses two topics in more detail: (1) the Distributed Software Component (DSC) framework, which considerably facilitates the development of components from which the platform is built, and (2) some specific components of the platform, which play a crucial role in service management and deployment. In addition, a brief\ud evaluation of CORBA (Common Object Request Broker Architecture) ORBs (Object Request Broker) is given, based on the experience of using CORBA as the underlying distributed processing environment for the platform

Component-based Groupware Tailorability using Monitoring Facilities

Tailorability has long been recognised as a key issue concerning groupware applications in general and component-based groupware applications in particular. Tailoring activities are usually classified according to three levels, viz., customisation, integration and extension. This paper presents an approach to component-based tailoring based on the use of monitoring extensions. Our approach allows the extension and integration of new components into a legacy groupware application without the need for changes in the existing components

Value of Geographic Diversity of Wind and Solar: Stochastic Geometry Approach; Preprint

Based on the available geographically dispersed data for the continental U.S. (excluding Alaska), we analyze to what extent the geographic diversity of these resources can offset their variability. A geometric model provides a convenient measure for resource variability, shows the synergy between wind and solar resources

Analysis of UML

This document presents an analysis of the Unified Modelling Language (UML). It includes an introduction to the different kinds of UML diagrams, an overview of the unified software development methodology, a survey concerning the availability of tools that support UML and an example of the use of UML

Size-sex and sex-age structure in populations of Far-Eastern flounders (Pleuronectidae)

Cited and archive data on sex ratio and its changes with age are generalized for 28 species of flounders from the Far-Eastern Seas of Russia belonged to the family Pleuronectidae. Spatial and temporal variations of their size-sex and sex-age structure are considered by species. Among the flounders, the portion of females increases with age and reaches 100 % in the largest and eldest classes. Populations of the western Bering Sea (pacific black halibut, arrowtooth flounder, yellowfin sole, and northern rock sole) and the eastern Okhotsk Sea (pacific black halibut, yellowfin sole, flathead sole, alaska plaice, and starry flounder) are distinguished by the maximum length and age with the sex ratio 50% : 50%. Male and female mortality varies, as well, between the populations. For the common species, as yellowfin sole, alaska plaice, sakhalin sole, flathead sole, starry flounder, and some others, the maximal body length and age are observed in the eastern Okhotsk Sea, but the minimal limits of the size and age are observed in the northern and western parts of the Okhotsk Sea