Wojciech Zabierowski

Lodz University of Technology · Department of Microelectronics and Computer Science

The article presents research in the domain of Computer Generated Music [1], more precisely – in the area of harmonic sequences generation. To achieve the goal set for the research, artificial neural networks were used. Research data have been made using MIDI mechanisms and a musical synthesizer. In addition, the article contains a discussion of ob...

As a result of the continuous progress and fast-growing popularity of mobile technologies in recent years, the demand for mobile applications has increased rapidly. One of the most important decisions that its developers have to make is the choice of technology on which their application will be based. This article is devoted to the comparison of J...

In the age of smartphones and tablets, the popularity of mobile applications is rising extremely quickly. There are countless purposes for using them, such as communication, social media, news, sending emails, shopping, paying, watching videos and streams, and playing games. Google’s Android is currently the most frequently used mobile system in th...

Reading and analyzing data from sensors are crucial in many areas of life. IoT concepts and related issues are becoming more and more popular, but before we can process data and draw conclusions, we need to think about how to design an application. The most popular solutions today are microservices and monolithic architecture. In addition to this c...

Modern times are extremely dependent on technologies and programs that are produced and released on a daily basis. They are key to the day-to-day success of any type of business because they can communicate essential information around the world and work with data much faster than any human being. Therefore, it is very important to have very effici...

Deep learning algorithms for object detection used in autonomous vehicles require a huge amount of labeled data. Data collecting and labeling is time consuming and, most importantly, in most cases useful only for a single specific sensor application. Therefore, in the course of the research which is presented in this paper, the LiDAR pedestrian det...

In this paper, the frequency broadband effect in vibration energy harvesting was studied numerically using a quasi-zero stiffness resonator with two potential wells and piezoelectric transducers. Corresponding solutions were investigated for system excitation harmonics at various frequencies. Solutions for the higher voltage output were collected i...

Microelectromechanical Systems (MEMS) are integrated devices whose characteristic dimensions are between 1 μm and 1 mm, whose operation relies on both electrical and mechanical phenomena and components, and whose manufacturing is based on appropriately enhanced microelectronic technologies. In Europe, MEMS devices are also called simply microsystem...

Writing mobile application is very complex process. Programmer has to decide about lot of things. He has to choose best solution for him and application. The article describe example of tools kit which can be used in every project. It shows their advantages and benefits from using them. In next chapter described used technologies and showed their k...

In this paper we present the parameterized model of MEMS condenser microphone built in Comsol Multiphysics environment. It is based on coupled electromechanic FEM simulation with help of analytical modelling. The model uses set of parameters that describes the structure dimensions and applied loads. The user attention is needed only for putting tho...

In this paper we present the analysis of a 3D model of a surface-micromachined accelerometer. It allows us to define basic mechanical parameters, which give us information about mechanical properties of the modelled sensor. The analysis has been performed in COMSOL Multiphysics software. We used the Finite Element Method (FEM) for the analysis of t...

The arcticle describes the immense potencial of using websites and their optimization in technical and content aspect with the aim of building prominence in natural Google Search results. The study also presents the functionality of service research tools, website return links, and website research tools.

Building online store with using current technologies should not be a challenge, although the promotion of this type of page without any additional functionalities can be difficult especially with huge competition. Graphical support for selection of clothing for clients would be distinguishing feature.

The paper describes the application to compose a diet. Application is using, among others, technologies such as Spring Framework, MS SQL Server, JavaScript, JSP, Ajax. It is allowed to manage meals - arrange menu for the day, and on that basis to generate a shopping list. The application has database of products and their nutritional value. As a re...

Sharing files between branch offices or photos between users is one of the most frequently used Internet functionality. High-speed Internet access, large disk space allows in a short time to exchange pictures with your friends, send files to your office or share photos with encountered problem. In order to create a hosting service application, foll...

The article presents the problems associated with signal processing in the human voice analysis. Based on the specific implementation of algorithms defining the human voice pitch, paper is shows the result in the form of a standard music notation with treble and bass keys on the stave. Particular attention is paid to the performance of the algorith...

Meaningful progress in the fields of MEMS is associated with the continuous development of the micromachining technologies. One of the most promising devices in MEMS is thermal sensors. When the first microbolometer appeared on the market, a huge interest in thermal detectors was observed. This paper is a short overview study on microbolometer geom...

In early stage of the design process, modeling is a crucial phase as it allows the designer estimating the device performance. Very often, this phase is time-consuming, especially when FEM simulator is used. Hence, a fast and reliable method is desirable. Moreover, in case of simple structures which behavior is described with quite simple equations...

Electro-thermal models are commonly used in simulations and designing MEMS devices, also in microbolometers. These models allow to estimate sensors performance what consequently impacts on fabrication cost. Mutual influence electric and thermal domains and building appropriate model for carrying out simulations is crucial to detect all phenomena ha...

This paper presents an approach to facilitate the design of a miсrobolometer. It is based on three main steps: the construction of a simplified model in Matlab, automatic transfer of the generated model into ANSYS and the verification of the model using ANSYS FEM simulation. The novel idea is the second step, realized using a special application, w...

There are developed Matlab ® code for optimize the cantilever geometric dimension for sensors of force field measuring.

This paper presents a web application supporting the work of the librarian. It presents technologies discussion and the tools used to create the present system. Paper presents the presuppositions of the created system and describes the application architecture and database. The paper presents the functionality offered by the system for each of the...

The article presents the results of the application of golden section search for selection of the MEMS electro-actuator comb length to receive the desired displacement at given voltage heating. The proposed solutions have been implemented programmatically using the ANSYS system.

Several MEMS (Micro Electro-Mechanical Systems) devices have been analysed and simulated. The new proposed model of SiC MPS (Merged PIN-Schottky) diodes is in full agreement with the real MPS devices. The real size DLL (Dynamic Lattice Liquid) simulator as well as the research on modelling and simulation of modern VLSI devices with practical applic...

The article describes usage of the Android SDK and GPS module on the example public transport schedule service. Developed application is an example of the use of mobile phone with Android system with built-in GPS receiver, as a tool for easy searching for public transport schedules. For this purpose the two applications, running on a client – serve...

In this document problems and solutions of integration framework Google Web Toolkit with J2EE platform was described.

The article presents the results of the studies of the displacement of MEMS electrical-thermo-actuators and decomposiotion of temperatures depending on the applied voltage. Some fragments of the developed code in the system ANSYS, which allows to automate the process of research, and automatically build graphical dependencies.

Simulation step is nowadays one of the crucial in the design process of the device. It allows estimating the device performance and reducing the cost of the fabrication process. It is also very useful in statistical approach. As technological process is not ideal and always produce some deviation from established parameters, the final device has va...

Abstract—Diagnostic Lab-Chip devices contains multiphase and multicomponent biochemical mixtures. For its simulation we propose multiscale flow model, which consist of macro-, mesoand micro-scale submodels. Hybrid Galerkin FEM algorithm was used solving model equations and obtain simulation results.

Thanks to modern simulation tools, a designer can study the properties of MEMS devices before they are actually fabricated. In this paper, we perform a study of dynamic thermal phenomena occurring in Ti-based microbolometer using Finite Element Method (FEM) simulation in Ansys Workbench® environment. We show that even in the case of pulse-based dev...

Thanks to modern simulation tools, a designer can study the properties of MEMS devices before they are actually fabricated. In this paper, we perform a study of dynamic thermal phenomena occurring in Ti-based microbolometer using Finite Element Method (FEM) simulation in Ansys Workbench® environment. We show that even in the case of pulse-based dev...

Article describes web portal development process. The aim of application is to make lecturer – student communication more efficient. Its major point is that every important information, related with specific course, would be easily accessible to students. Additionally, lecturer should be equipped with mechanism, that enable him to inform all assign...

This paper discuss oportunity of using web technologies in the proces of project managment - especially toward multi-programmer project managment problems.

A system for optimizing the size of MEMS-based accelerometer has been developed to meet the standards for the sensitivity and survivability, etc. A code has been written for the system ANSYS, allowing automatically conducting modal analysis or other research of MEMS design based on dimensions obtained from other system.

Current MEMS design tools allow accurate device simulation and predicting MEMS properties before their actual fabrication. In this paper, we study the Ti-based microbolometer using FEM simulation in Ansys Workbench environment. We show that our model is accurate by comparing it to the published experimental data. It is also demonstrated for which c...

In this paper the approach to the size reduction for very large circuit equivalents of MEMS non-electrical parts’ mathematical models is discussed

In the paper the dedicated application to the Computer-Aided Thermoactuator Design using ANSYS as third-party software is presented. Both, the algorithm and GUI are described. Finally, the simulation results obtained for thermoactuator shown some linear dependencies.

Artykuł przedstawia aktualne trendy w prowadzonych na świecie badań w dziedzinie komputerowej analizy dzieła muzycznego. Zostały w nim przybliżone istniejące kierunki badań oraz stan wiedzy w tej tematyce. W opracowaniu przedstawiono zarówno informacje historyczne w formie ciekawostek jak i kierunki rozwoju tej dziedziny nauki, które w zależności o...

Aim of this article is description of application supporting hotel management, which significantly helps to administration this type of building. It is designed for both sides of system users: hotel employees and guests who want to make reservation.

The article presents the results of work relating to the use and functionality of VoIP telephony and business applications at Philips ESC in Lodz with NEC MA4000 application.

The article presents the result of research of an exemplary website concerning Polish Angling Association. The whole project is based on the free web technologies. The site enables anglers and active workers of angling area as well as members of the Polish Angling Association, a quick access to information concerning current activity of angling are...

Currently Web portals which are providing real time services, required to implement two separate servers. One of them deals contact with the client and the other synchronizes data posted by users. Such solutions require the simultaneous work of two independent machines and write twice more code. A better solution might be a program which updates da...

The article presents description of software which has been implemented for projects developing by Scrum methodology. Presented web application includes functionalities, which could be useful for the management side and the side responsible for development. The Software as well as Scrum methodology has been created mainly for IT projects, but there...

The paper presents application for mobile devices which provides real time guitar tunning and analysis of tabulatures. This functionality requires algorithms to extract harmonic components of sound. This application is destinated for Symbian operating system with S60 interface. It consists of two important parts: application core created in Symbian...

Music surrounding people from the dawn of history has served as a way to convey emotions, it has helped to rest, to communicate. In the process of evolution civilizations started to think how to create music, inventing the rules, which would help in the process of its creation - composition. One of trends was to make music based on algorithmic patt...

Nowadays cryptography is applied in more and more applications. Most often asymmetric or hybrid systems are used, which are based on mathematical concepts. However, a promising family of quantum solutions tries to take over control. This article describes a technique of quantum key distribution called BB84. It gives an insight into quantum physics...

The paper presents research related to domain of Computer Generated Music [1], namely it treats on harmonic sequence generation. The goal of the research is obtained with an application of neural networks. Data preparation was conducted using MIDI mechanisms and music synthesizer. The paper includes also a discussion of obtained results with respec...

The paper presents research related to domain of Computer Generated Music [1], namely it treats on accords sequence generation. The goal of the research is obtained with an application of neural networks. Data preparation was conducted according to tonal harmony theory. The paper includes also a discussion of obtained results with respect to the ac...

This paper describes how to design content management system using the newest web-based techniques. It contains helpful information that can be used during selecting programming language. It introduces multi layer architecture with description and functionality of each layer. It provides description of Model View Controller pattern and how to use i...

The theme of the work is to design a web portal that integrates community services and the practical implementation that uses Ajax technology to build intuitive, user-friendly interface. To solve the problem contained in the topic was not purely theoretical, it will be presented on the example of site built to the needs of the VII Student House of...

Present article describes novelties in Java Enterprise Edition 6 specification.

This paper describes how to design content management system using the newest web-based techniques.

This paper describes two applications developed to cooperate in traffic monitoring.

This article and application constitutes an analysis of the latest trends in creating mobile application based on Java 2 Micro Edition Platform. It also provides closer look at the open source tools used to create such solutions. The main objective was to configure and build a mobile application – a training service based on these technologies and...

This paper provides basic information on content management systems, and application developed by the authors.

This paper describes how Google Maps API interface can be used together with .NET technology, on example of a web portal for drivers.

Main purpose of this paper is to discuss the application that aims to reduce the burden on school administration staff during preparations and maintenance of school timetables. It describes not only the application itself but also the underlying Ruby on Rails Web development framework and a Ruby programming language. Although this project is not ye...

Initiating of the new branch of the economy, which is the e-commerce, even in small company is nowadays not so hard. Administrate becomes even more and more easier. Nowadays the quantity of computers with the access to the Internet increases very fast, the same as the numbers of potential customers, who are interest with the virtual market.

The following article is about the network Quality of Service issues, which is a set of technologies that enable to users obtain from the network predicted level of services basing on particular rules e.g. throughput, delay and jitter. An Investigation and comparison of QoS mechanisms, focusing on the Internet Protocols has been done here, to anal...

This paper describes current problems with project management as well as a web application created by authors, aimed to ease project management

The increasing degree of society informatization and bigger percentage of person using the Internet, has caused the development of the web technologies. This is why the world around us is changing. On each step we can see that computers and internet allow us to save our time, money and also they enable to make communication easier. With the use of...

This article and application constitutes an analysis of the latest trends in creating Internet applications based on Java Platform, Enterprise Edition standard. It also provides closer look at the most popular technologies, such as AJAX, JSF or EJB 3.0 and open source tools used to create such solutions. The main objective was to configure and buil...