Using NEO4J database and graph model for analysis of metropolitan railway connections of Silesian voivodeship in Poland

The study concerns the possibility of using the Neo4j database as a graph analysis tool. The analysis was presented on the example of the railway connection network assessment when designing a new version of the railway infrastructure in the Silesian Voivodeship. The authors present the concepts of a laboratory environment built on the basis of the Neo4j database, and an application that allows obtaining data and modifying the railway infrastructure model. Thanks to this, it is possible to simulate many variants of the designed model and its evaluation using the proposed measurement indicators. The study presents methods and tools of analysis that can be successfully used to assess the topology of a graph in many different research areas, such as analysis of management systems, computer networks or biological systems

Zastosowanie wybranych mechanizmów transformacji danych na potrzeby symulacyjnye na przykładzie SQL Server

This study represents some chosen ETL mechanisms which are possible to be applied in the SQL database server. These mechanisms may be used for an initial preparation of data saved in a relational database. By means of them one may obtain a description of an Integrated Database Management System with a view to its integration with a company’s actual systems or its use for simulative applications.Artykuł przedstawia możliwości w zakresie zastosowania mechanizmów transformacji, ładowania i pozyskiwania danych w celu zapisania ich w jednolitym modelu danych. Tak stworzony jednolity model zapisany w relacyjnej bazie danych podlega łatwiejszej integracji z rzeczywistymi danymi przedsiębiorstwa i pozwala na dokonanie na nim badań symulacyjnych

Open concurrent network communication methods in building distributed Web applications

The attractiveness of real-time multimedia communication as part of an e-learning platform largely depends on the quality of the telecommunications infrastructure and on theservices that support the exchange of audiovisual data. The research subject of this workis communication between stationary and mobile devices using distributed services such as Web Real-Time Communication (WebRTC) running in HTML5 compliant web browsers. The test connections were carried out in a peer-to-peer architecture over a local wireless WiFi network and a mobile network supporting the Long Term Evolution (LTE) standard for data interchange. Several audiovisual sessions between two clients were analyzed for different connection scenarios. Parameters responsible for the transmission quality, such as delay, jitter,packet loss, or the speed of sending and receiving video frames were measured for each scenario. Open audiovisual communication system performance experiments were conducted under real operating conditions. The obtained results indicated potential applications in the development of e-learning websites

Safe locker - a secure cargo transport control support IT system

The article presents the assumptions and architectural implementation of a cargo transport control support system, as well as the preliminary results of tests of the operation of this system in environmental conditions identical with the conditions of natural operation.The aim of the article is the publication of the research results collected during the design, implementation and operation of the system, which relate to the proposed solutions for selected problems that emerged during the development of the system by the research and development team. The article also presents the completed development work and possibilities in the field of the system improvement due to security reasons through integration with modern data processing systems based on a block chain (Blockchain)

An egg mobile device as a game controller

In this work the real-time control of computer games was explored by a single electrode mobile electroencephalography (EEG) device with a Bluetooth interface. The amplitude variation in the two frequency bands of 4-12 Hz and 60-200 Hz was selected as the real-time control parameter. The frequency-domain of a raw EEG signal was calculated using the discrete Fourier transform. The time-dependent signal samples equal to 512, 1024, and 2048 time points in size were used in our research. The well-known classic Pong game was used to try out our controller. The developed software handles communication with the device and real-time game rendering. The .NET Framework with the C# programming language was used as a develop-ment tool. 50 game play trials were made for each controller setup. The obtained results are promising for the possible use of the device in real-time communication with computer devices for people with hand disabilities

Industrial Internet of Things Systems for Tracking and Traceability of Production Business Processes

The article presents the results of research on the use of measuring devices based on RFID tags and graphic tags to track the increase in production. The conducted research experiments were made in a real production company, which is characterized by an average degree of digitization of its business processes and significantly uses the human factor in production. The conducted research allowed us to show the usefulness of measurement methods in tracking business processes, and to analyze the method of obtaining production data to achieve the traceability of manufactured components. The study also presents selected examples of IT systems in solving traceability problems (traceability and traceability of production)

3D Object Digitization Devices in Manufacturing Engineering Applications and Services

The rapid development of CAD 3D systems has led to the development of solutions enabling the physical achievement of the designed object, already at the design stage. Such a solution is the rapid prototyping method, intended for fast, precise and repeatable production thanks to additive technology. The first basic step of this method is a 3D scan. It is a technique that analyzes a real object in order to collect data about its basic (geometric) and additional (e.g. color) features. The collected data is used to generate three-dimensional, virtual models. Scanning can be performed in various ways using different devices. The aim of the article is to review the available technologies for digitizing 3D objects and to compare them in the context of individual application areas. It presents selected tools and software that will economically and efficiently increase the range of applications of digitization methods in the production process and offering various services on the market

Praxis and language organization in left-handers

The performance of learned manual gestures (praxis) and the production of speech are thought to depend on related neural processes. If this relationship is not invoked by an unknown, third variable then shifts in their laterality, including dissociations of these two functions, would be unlikely unless the sharing of some neural resources with other functions is advantageous. This could be the case in lefthanders, in whom actions requiring manual precision are controlled by their right hemispheres, and whose representations could attract the control of skilled gesture. Functional neuroimaging (fMRI) was used to study praxis and language functions. Their lateralization indices were measured in 56 consecutively tested lefthanders (28 females), with the mean age of 23.3±4.9 years (range 18.4 – 47 years), and an Edinburgh Handedness Inventory quotient between –100 and –55.6 (with the mean of –83.8±14.2). We show that atypical, bilateral organization or right-lateralization of praxis is more common than atypical organization/lateralization of language, observed, respectively, in 23 (41%) vs. 15 (26.8%) of cases. Specifically, we found: (a) seven cases (12.5%) of clear, and an additional three cases (5.4%) of less pronounced dissociations of atypically represented praxis from typically represented language; (b) 13 cases (23.2%) with atypically organized praxis also associated with atypically organized language, and (c) only two cases (3.6%) of rather strongly atypical lateralization of language, yet with quite typical lateralization of praxis. These outcomes are consistent with an idea that, in some lefthanders, the guidance of skilled manual actions can profit from tighter links with the right hemisphere, whose motor specialization is linked in this particular population to manual precision, but in general to attentional resources, visuo-spatial processing and even bimanual coordination. Because of the presumed links of praxis with productive language, such transfers are often, and unsurprisingly accompanied by the reorganization of the latter. Yet, the very rare cases of reversed language functions, without any pronounced shifts in representations of praxis, indicate that such a pattern of segregation – or inverse dissociation – of these two functions could be maladaptive

Manual praxis and language-production networks: An fMRI dataset

This project provides the fMRI data and code for analyses, as well as task codes, presented in our Cortex paper: "Manual praxis and language-production networks, and their links to handedness"

fMRI data timings

fMRI data timings event files (EVs