Filip Maly

Improving Indoor Localization Using Bluetooth Low Energy Beacons

The paper describes basic principles of a radio-based indoor localization and focuses on the improvement of its results with the aid of a new Bluetooth Low Energy technology. The advantage of this technology lies in its support by contemporary mobile devices, especially by smartphones and tablets. We have implemented a distributed system for collecting radio fingerprints by mobile devices with the Android operating system. This system enables volunteers to create radio-maps and update them continuously. New Bluetooth Low Energy transmitters (Apple uses its “iBeacon” brand name for these devices) have been installed on the floor of the building in addition to existing WiFi access points. The localization of stationary objects based on WiFi, Bluetooth Low Energy, and their combination has been evaluated using the data measured during the experiment in the building. Several configurations of the transmitters’ arrangement, several ways of combination of the data from both technologies, and other parameters influencing the accuracy of the stationary localization have been tested.

Google Glass Used as Assistive Technology Its Utilization for Blind and Visually Impaired People

Project Google Glass represents the innovative technology developed by Google’s X Lab. This smart gadget is built on human interaction with world through Android operating system. Wearable computer with the optical head-mounted display (abbreviated as OHMD) has been developing by Google. Firstly, the primary purpose of Project Google Glass was the hands-free displaying of knowledge presently obtainable to most sensible mobile phone users. Secondly, Google Glass (abbreviated as GG) was allowing interaction with the Internet and the web via basic voice or vision commands. In a basic view, Google Glasses are wearable computers that can easily power mobile devices such as Smartphones or tablets. This paper is focused on the practical utilization of Google Glass for sensually impaired people (in this case it means blind or visually impaired people). Google Glass is easily programmable and helpful technology that can significantly help people, not only the handicapped or impaired individuals, but their benefits can also make easier life for elderly people. Primary purpose of the paper is to provide and test developed application for basic navigation issues, which are usable for daily support of blind or visually impaired people. Second part of research is using Google Glass camera as a basic recognition tool for blind or visually impaired individuals. In this point of view it is possible to call GG as Assistive Technology or device, which helps blind people or people with visual impairment too. Google Glass are currently often used in various domains such as medicine, research, education.

Smart Solution in Social Relationships Graphs

The social relationships graph i.e. sociogram allows a transparent view of people in their surroundings to whom we have a certain relationship. Such options have already depicted many tools. They generally use data from social networks, e.g. Facebook or Google+. Certainly, not every such a graph is entirely transparent and usable. A sociogram contains a large number of vertices and edges when there are a larger number of people in their surroundings. Then it is not possible to simply work with the graph and subsequently describe it. In this article, we introduce options that will make the sociogram transparent, thus offering easier work with it. We work with a software tool from the IHMC company, called CmapTools, which normally operates on desktop operating systems. In our case, we are working with a version for the Android OS, which has been externally developed for the company for a long time, but has not yet been publicly introduced.

Troubleshooting Assistance Services in Community Wireless Networks

We have identified new services intended for users and administrators of community wireless networks. Troubleshooting assistance services will assist the users during solution of communication problems, gathering data for expert analysis, informing the user about the state of the network (including outages), and so forth. Network administrators will be provided with a unique tool supporting the network analysis, operation, and development. We have mainly focused on the use cases and prerequirements—the problem of topology discovery.

An Artificial Player for a Turn-Based Strategy Game

This paper describes the design of an artificial intelligent opponent in the Empire Wars turn-based strategy computer game. Several approaches to make the opponent in the game, that has complex rules and a huge state space, are tested. In the first phase, common methods such as heuristics, influence maps, and decision trees are used. While they have many advantages (speed, simplicity and the ability to find a solution in a reasonable time), they provide rather average results. In the second phase, the player is enhanced by an evolutionary algorithm. The algorithm adjusts several parameters of the player that were originally determined empirically. In the third phase, a learning process based on recorded moves from previous games played is used. The results show that incorporating evolutionary algorithms can significantly improve the efficiency of the artificial player without necessarily increasing the processing time.

Techniques for dynamic deployment of modules in context-aware Android applications

This paper presents the design and implementation details of mobile applications that support dynamic deployment of additional functionality without the need to restart the application or to interact with the user. This ability is the starting point that allows us to create context-aware applications that may download and provide new functions according to particular context. Mobile devices (smartphones) have a lot of sensors that can be used to determine the state of the environment and the users context. But current mobile applications are able to adapt themselves with predefined functions and to predefined contexts only. Our contribution enables these applications to react to particular situations that were unknown at the time the user installed the application and with functions that did not exist at that time.

Provisioning of application modules to Android devices

The Google Android platform supports provisioning of packaged applications to an Android device. However, an existing approach requires users interaction during the installation of a new application or its modules. We present a new approach to dynamic modules loading which enables provisioning of new modules to Android device dynamically without the interaction with the user. It will allow complex applications to adapt to the surrounding conditions and requirements of the user by downloading additional code from a server or a neighboring peer device. In our solution we propose to replace the default application class-loader with a custom one while employing some existing mechanisms of class-loading from APK packages at the Android platform.

An Ad Hoc Mobile Cloud and Its Dynamic Loading of Modules into a Mobile Device Running Google Android

This paper introduces Ad Hoc Mobile Cloud (m-cloud) Computing solution, describes its advantages and practical use-cases, e.g. during disaster recovery or mobile network overload during actions involving masses of people. A basic concept of an M-client M-client Server architecture which supports creation and existence of m-clouds is presented further in the text. Principle of a client (an m-client) with variable thickness, a basic building block and thus a necessary component of m-clouds, is discussed. The paper also describes dynamic module loading within an m-client. The Google Android platform has been used for our implementation.

Computer-aided OSPF network design tool

This article deals with an experimental version of the software used to visualize the network, provide the possibility to simulate topological and configuration changes, analyze and redesign the network. This tool was successfully deployed in the HKFree community wireless network, consisting of a large number of routers that use the OSPF routing protocol. Its primary purpose is to assist the network administrators in solving problems, creating and maintaining documentation and designing future changes.

Prototype of a Smart Google Glass Solution for Deaf (and Hearing Impaired) People.

Nowadays (in 2018), we are facing an accelerated development of smart devices. This technological boom is based on rapidly growing software and hardware requirements not only from the users, but also from producers. Statistic results show that every second person in the world will pose a smart phone (i.e., smart mobile device) in 2018. The majority of our society uses these devices for daily purposes, such as communications, work, but there are many other capabilities of these devices to be discovered. One of their best potential represents their utilization for handicapped or sensually impaired people. In this article, the authors present a specialized smart solution developed especially to help people with hearing impairment. Compared to conventional compensating aids, the developed solution connect modern technologies and originality. The aim of the solution is to digitally capture the ambient sound and based on its evaluation using neural networks, to present users needed information in a text form. To accomplish this smart solution, are used modern cloud services and a special smart device – Google Glass (abbreviated GG). These smart goggles offer sensors with the ability to compensate user’s disadvantages. In the direction of facilitating the work for hearing impaired people, authors intend to further develop this technology and offer solutions in the following research to make daily life easier for people with hearing impairment.