Создание прототипа интерфейса и его тестирование
The article represents some information technologies of a search for similar researches, projects or just ideas in catalogues of dissertations and suggests a software web-based system of automated search of the kind. The relevance of the system is justified by impossibility of doing the same work by people and absence of systems which can input a large text for this kind of search. There are several methods described which the system is based upon as well as several mini-researches results which have been conducted in order to understand structures of the dissertations catalogues and to interpret results of the system’s work. The system’s architecture, database structure and algorithm are presented in the article along with the rules of its running automatically using one of the planning tasks mechanisms of operating systems (cron). There are several user's and the system administrator's interface examples and system outputs provided from the user’s and the system administrator’s points of view. In the conclusion, key features and difficulties of the system and of the process of using it are outlined together with the outcome of the research with advantages and disadvantages of the system along with mentioning its practical value. Also, as a part of the conclusion there are results of another mini-research about the system's search script lifetime and some outcomes of server and the script settings necessary for getting correct results with the help of the system.
The user interface is a common ground of software internals with environment. Parameterization of UI (user interface) allows to estimate success of the software product. UI can be judged quantitatively. In this article applicable metrics of the user interface are presented. The measurements on successful and unsuccessful software products are compared. The first group of metrics is about general usability of UI. In ideal systems these parameters have highest scores. In real world the scores may vary. It’s good practice to control the parameters during SW development. The help system metric and the error operation metric relate to easy to use characteristic of software. The user score metric shows subjective usability of the system. The time metric describes performance of the user interface. The regressions metric is to have quantity of user interface improvement. The second group of metrics is about UI colors. There are different parameters that may tell how well the UI will be accepted by the users. The most useful are image standard metric, color function metric, number of colors metric, compatibility of colors metric. At the conclusion of the article some examples of the metrics for existing software are presented.
The process of choosing the configuration of a hierarchical system is not an easy task, and the decision itself is not obvious due to the similarity of the parameters of alternative options and the presence of many conflicting criteria that are not amenable to manual analysis. Multi-criteria analysis of complex hierarchical systems requires processing a large amount of data, which is an excessively resource-intensive process. This is mainly due to the size of the structure of the developed system, in which each subsystem is represented by its own set of alternatives of options, parameters and criteria for their evaluation. The detailed study of these subsystems is separate from each other and may not give the desired solution as a result. When forming the final decision, the top-level decision maker, as a rule, is guided by the indicators of the complete system, therefore, makes an informed choice of configuration, which includes not only the best representatives of each of the subsystems. As a result, the overall task of multi-criteria analysis is complicated by the need for additional study of the resulting structure. The tools considered in the article cannot be effectively used to solve the problem of multicriteria analysis by a subject specialist who does not own these tools. The way out of this situation is the creation of a problem-oriented decision-making tool that implements the necessary data analysis methods and has a shell that provides tuning for the required subject area and task. The creation of such a system allows user-specialists to use existing methods of multi-criteria analysis to effectively solve their problems by pre-adjusting the system. The overall architecture of the problem-oriented instrumental support environment of the user in multi-criteria analysis tasks was developed as a set of three main levels: the subsystem tuning subsystems, the user's work subsystem, the kernel subsystem. The presented tools provide not only carrying out the required calculations, but also pre-setting the application on the subject area, which facilitates the work of users who solve specific applied problems. The organization of the environment allows you to separate the functions of different users, to separate the setting on the subject area from the process of directly solving the problem. The independence of the computational core from user interfaces allows for an evolutionary increase in the functionality of the application.
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
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.
I give the explicit formula for the (set-theoretical) system of Resultants of m+1 homogeneous polynomials in n+1 variables