Компьютерные технологии обучения
A shared library is a ﬁle that contains library code and data in binary form. Application built against the library references the data via symbols and the contents of what’s being referenced get known only during the application startup. Library is shipped with header ﬁle(s) the program is compiled with. The problem of the binary compatibility arises when the new version of library is installed into system and the program, having not been recompiled, is attempted to run in the environment with the new library. The incompatibility may result in fatal errors during the startup or even during the runtime. In this article we deduce the rules that must be followed in order to keep the binary compatibility of a shared library. Unlike most of researches in this area, we also assume that the library may contain its own restrictions upon its usage, more powerful than restrictions of C++ language itself. So the possible restrictions are analyzed as well, and we attempt to weaken the rules of binary compatibility when such restrictions are enforced. As a conclusion we list the rules a programmer should follow to keep his or her library binary compatible. We also conclude that possible restrictions limiting the use of library allow to weaken these rules in relatively small number of cases. For the purpose of this study, we create formal notation for the process of building and using a library, introduce formal deﬁnitions of source and binary compatibility and of program behavior. We base the assumptions about mapping source code entities to binary level on the Itanium C++ ABI standard, which describes gcc’s way of emitting binary code and data.
The issue contains the papers presented at the 4th Spring/Summer Young Researchers’ Colloquium on Software Engineering (SYRCoSE 2010) held in Nizhny Novgorod, Russia on 1st and 2nd of June, 2010. Paper selection was based on a competitive peer review process being done by the program committee. Both regular and research-in-progress papers were considered acceptable for the colloquium. The topics of the colloquium include software development methods and tools, functional testing and formal verification, telecommunication software, high-performance computing, software engineering education, and others.
Currently in training widely used computer business game, simulating the real conditions of companies. As a subject area in designing a business game organized by the business processes of real enterprises, the perpetrators of which must possess certain competencies. There are many software products that allows to model business processes and build the game scenario based on this model, but their characteristic feature is orientation to a particular business process and scenario development of the game only for this process. When developing a software product, which you can use to build the game scenario for any subject area, there is a problem with the automated build script for models of business processes. The process of constructing the scenario of the business game consists of several stages, one of which is the transformation of the business process model in a unified business process. Models of real business processes are weakly formalized description of the subject area of business game, so this transition is a challenging task. The paper considers the algorithm of transformation of models of real business processes, represented in IDEF0 notation, the model unified business process based on the ontological approach. For transformation build ontological models of elements and a graphical representation in the editor Protégé ontology for the description of the matching elements and their graphical representations created by appropriate limitations, developed rules of transformation, which is also reflected in the ontological model. A query to the ontology that displays matching elements of one notation to another notation built. As an example, given the query, allowing obtaining the matching element of the work process in IDEF0 notation to other notations.
The SEMAT kernel describes aspects of software engineering related to the development of software systems. There are classes of software systems, with specificity , which is determined by the fact that these systems are operated within a few years after their development. For such systems it is necessary to consider other stages of the life cycle of software systems such as operation and maintenance.
This paper presents an approach of developing a special environment to help application developers to create programs compliant with some interface standard. The paper suggests a design of the informational system aimed to make it easier to develop and to maintain such an environment on the basis of the existing systems, with necessary modiﬁcations in the areas concerned by the standard. To store information about existing systems and to facilitate their modiﬁcation, it is suggested to use a database with a set of accompanying tools. Necessary aspects of the database schema design are described, as well as some aspects of the tool architecture.
The article describes the project approach to learning as a way of formation of professional competence of software engineering. Since this sphere is quite different from engineering as such, the process of learning and competencies performed in a special way : training project selected on the basis of those competencies that need to master.
The article describes the use of guidelines for the individual and collective (team) processes software development (Personal Software Process - PSP and Team Software Process - TSP), developed by the Software Engineering Institute (SEI) Carnegie Mellon University (CMU), to help understand what concrete actions, skills and knowledge necessary for the development of specific competences. Highlighted the benefits that gives distinction competency areas. The basic features of educational projects and the positive characteristics of project-based learning were formulated in terms of increased demand for specialists in the labor market.
The International Conference on Software and Systems Process (ICSSP) 2014 was held in Nanjing, China, between May 26th and 28th, 2014.The main theme of ICSSP 2014 is “Processes for Emerging and Evolving Software Systems”, emphasizing and encouraging the research and experiences related to the emerging trends in software and systems engineering from a process perspective as well as the support of continuous changes and evolution in software systems. The accepted papers present completed research or advanced work-in-progress in all areas of software and systems process as well as domains outside the traditional software process community.
A model for organizing cargo transportation between two node stations connected by a railway line which contains a certain number of intermediate stations is considered. The movement of cargo is in one direction. Such a situation may occur, for example, if one of the node stations is located in a region which produce raw material for manufacturing industry located in another region, and there is another node station. The organization of freight traﬃc is performed by means of a number of technologies. These technologies determine the rules for taking on cargo at the initial node station, the rules of interaction between neighboring stations, as well as the rule of distribution of cargo to the ﬁnal node stations. The process of cargo transportation is followed by the set rule of control. For such a model, one must determine possible modes of cargo transportation and describe their properties. This model is described by a ﬁnite-dimensional system of diﬀerential equations with nonlocal linear restrictions. The class of the solution satisfying nonlocal linear restrictions is extremely narrow. It results in the need for the “correct” extension of solutions of a system of diﬀerential equations to a class of quasi-solutions having the distinctive feature of gaps in a countable number of points. It was possible numerically using the Runge–Kutta method of the fourth order to build these quasi-solutions and determine their rate of growth. Let us note that in the technical plan the main complexity consisted in obtaining quasi-solutions satisfying the nonlocal linear restrictions. Furthermore, we investigated the dependence of quasi-solutions and, in particular, sizes of gaps (jumps) of solutions on a number of parameters of the model characterizing a rule of control, technologies for transportation of cargo and intensity of giving of cargo on a node station.
Event logs collected by modern information and technical systems usually contain enough data for automated process models discovery. A variety of algorithms was developed for process models discovery, conformance checking, log to model alignment, comparison of process models, etc., nevertheless a quick analysis of ad-hoc selected parts of a journal still have not get a full-fledged implementation. This paper describes an ROLAP-based method of multidimensional event logs storage for process mining. The result of the analysis of the journal is visualized as directed graph representing the union of all possible event sequences, ranked by their occurrence probability. Our implementation allows the analyst to discover process models for sublogs defined by ad-hoc selection of criteria and value of occurrence probability
The geographic information system (GIS) is based on the first and only Russian Imperial Census of 1897 and the First All-Union Census of the Soviet Union of 1926. The GIS features vector data (shapefiles) of allprovinces of the two states. For the 1897 census, there is information about linguistic, religious, and social estate groups. The part based on the 1926 census features nationality. Both shapefiles include information on gender, rural and urban population. The GIS allows for producing any necessary maps for individual studies of the period which require the administrative boundaries and demographic information.
Existing approaches suggest that IT strategy should be a reflection of business strategy. However, actually organisations do not often follow business strategy even if it is formally declared. In these conditions, IT strategy can be viewed not as a plan, but as an organisational shared view on the role of information systems. This approach generally reflects only a top-down perspective of IT strategy. So, it can be supplemented by a strategic behaviour pattern (i.e., more or less standard response to a changes that is formed as result of previous experience) to implement bottom-up approach. Two components that can help to establish effective reaction regarding new initiatives in IT are proposed here: model of IT-related decision making, and efficiency measurement metric to estimate maturity of business processes and appropriate IT. Usage of proposed tools is demonstrated in practical cases.