This PDF file contains the front matter associated with SPIE Proceedings Volume 8903, including the Title Page, Copyright information, Table of Contents, Introduction, and Conference Committee listing.

The cycle of WILGA Symposia [wilga.ise.pw.edu.pl] on Photonics and Web Engineering, Advanced Electronic Systems, under the auspices of SPIE, IEEE, KEiT PAN and WEiTI PW was initiated in 1998 by a Research Team PERG/ELHEP ISE PW. The WILGA conferences take place two times a year and the participants are young scientists from this country and abroad. This paper debates chosen topical tracks and some papers presented during the 31 WILGA Multi-Conference, which took place on 8-10 February 2013 at the Faculty of WEiTI PW. The January conference was attended by around 100 persons. Here we discuss closer the subjects of biomedical photonics, electronics and informatics, as well as chosen aspects of applications of advanced photonic, electronic circuits and systems. The 32 nd WILGA Symposium took place on 27 May – 02 June 2013 in WUT WILGA resort near Warsaw. These two editions of WILGA Conferences - January and May have generated more than 250 articles, from which around 100 were chosen by the Symposium and Conference Committees to be published in this volume of Proc.SPIE. WILGA Symposium papers are traditionally submitted via the WILGA web page [wilga.ise.pw.edu.pl] to the SPIE Proceedings publishing system [spie.org]. Email for the correspondence is: photonics@ise.pw.edu.pl. All Wilga papers are published in journals Elektronika, IJET-PAN and in Proc.SPIE. Topical tracks of the symposium usually embrace, among others, new technologies for photonics, sensory and nonlinear optical fibers, object oriented design of hardware, photonic metrology, optoelectronics and photonics applications, photonics-electronics co-design, optoelectronic and electronic systems for astronomy and high energy physics experiments, JET and pi-of-the sky experiments development. The symposium In its two editions a year is a summary of the development of numerable Ph.D. theses carried out in this country and this geographical region in the area of advanced electronic and photonic systems. It is also a great occasion for SPIE, IEEE, OSA and PSP members, young researchers and students to meet together in a large group spanning the whole country with guests from this part of Europe. A digest of chosen Wilga references is presented.

Traditional WILGA Symposia are held two times a year since 1998. Each year the WILGA May edition gathers around 300 young researchers active in advanced photonics and electronics systems. The paper, as each year, presents a digest of chosen technical work results shown by young researchers from different technical universities from this country during the SPIE-IEEE Wilga 2013 Symposium on Photonics and Web Engineering. Topical tracks of the symposium embraced, among others, nanomaterials and nanotechnologies for photonics, sensory and nonlinear optical fibers, object oriented design of hardware, photonic metrology, optoelectronics and photonics applications, photonics-electronics codesign, optoelectronic and electronic systems for astronomy and high energy physics experiments, CMS, ITER, JET – Joint European Torus, BRITE nanosatellite, and pi-of-the sky experiments development. The symposium is an annual summary in the development of numerable Ph.D. theses carried out in this and neighboring countries in the area of advanced electronic and photonic systems. It is also a great occasion for SPIE, IEEE, OSA and PSP students and young researchers to meet together in a large group spanning the whole country with guests from this part of Europe. A digest of Wilga references is presented [1-225].

Research and technical communities for optics, photonics and optoelectronics is grouped in this country in several organizations and institutions. These are: Photonics Society of Poland (PSP), Polish Committee of Optoelectronics of SEP, Photonics Section of KEiT PAN, Laser Club at WAT, and Optics Section of PTF. Each of these communities keeps slightly different specificity. PSP publishes a quarterly journal Photonics Letters of Poland, stimulates international cooperation, and organizes conferences during Industrial Fairs on Innovativeness. PKOpto SEP organizes didactic diploma competitions in optoelectronics. KEiT PAN takes patronage over national conferences in laser technology, optical fiber technology and communications, and photonics applications. SO-PTF has recently taken a decision to organize a cyclic event “Polish Optical Conference”. The third edition of this conference PKO’2013 was held in Sandomierz on 30.06-04.07.2013. The conference scientific and technical topics include: quantum and nonlinear optics, photon physics, optic and technology of lasers and other sources of coherent radiation, optoelectronics, optical integrated circuits, optical fibers, medical optics, instrumental optics, optical spectroscopy, optical metrology, new optical materials, applications of optics, teaching in optics. This paper reviews chosen works presented during the III Polish Optical Conference (PKO’2013), representing the research efforts at different national institutions.

This paper presents a surface shape measurement system based on laser deflectometry. System’s design aims at application in documentation of objects of cultural heritage. The system is composed of a semiconductor laser, a CCD camera and imaging optics. The principle of measurement involves ray tracing of the laser beam calculated from two positions of the detector along the optical axis to determine the angle of inclination of the measured surface. The object is scanned with the designed system and resulting surface normal vectors are integrated to form the output surface. Exemplary measurement results are presented and discussed.

In the article analysis of UV absorption and visible fluorescence of Sm³⁺ and Tb³⁺ ions doped phosphate glass with molar composition: 65P₂O₅ + 8Al₂O₃ + 10BaO + 17(Na₂O + MgO + ZnO) have been investigated. As a result of optical pumping fabricated glass with radiation from a deuterium lamp four luminescence bands were observed near to the wavelength of 600 nm for Sm³⁺ ions and 550 nm for Tb³⁺ ions. It was found that larger energy gap between laser and ground levels leads to the strongest emission in the visible range in terbium doped glasses than in glasses doped with samarium ions. Both fabricated glasses are characterized by the ability to selectively detect the radiation in the UV range.

The optical properties of Yb³⁺/Ho³⁺ - codoped tellurite glass has been investigated. Upconversion luminescence at the wavelengths of 545 nm (⁵S₂ (⁵F₄) → ⁵I₈) and 654 nm (⁵F₅ → ⁵I₈) in holmium was obtained as a result of energy transfer between Yb³⁺ and Ho³⁺ ions. The optimization of the activator content and the concentration ratio were conducted with the purpose of maximizing the efficiency of energy transfer. Mechanism and energy diagram involved in observed emission were discussed. The highest upconversion emission intensity was obtained in thetellurite glass codoped with 0.5Yb₂O₃/0.1Ho₂O₃ molar ratio.

Optical characteristics of thin film carbon-palladium (C-Pd) nanocomposites are analysed theoretically. The multinanolayer model is used to explain its specific optical spectral properties. For analysis an advanced electrodynamical method of single expression is used what is able to perform analysis not only for linear but also nonlinear (intensity depended) boundary problems solution.

In this paper, the results for thin carbon-palladium (C-Pd) nanocomposites obtained by PVD (Physical Vapour Deposition) and PVD/CVD (Chemical Vapour Deposition) method, carried out using Raman spectroscopy method are presented. Studies reveal the dominance of fullerene-like structure for PVD samples and graphite-like structures for CVD samples. The type of substrate and metal content have great impact on spectra shapes.

In the paper the analysis of upconversion luminescence in Yb³⁺/Er³⁺ co-doped tellurite glass and optical fiber has been investigated. Upconversion luminescence at 525 nm, 546 nm, 651 nm corresponding to the Er³⁺: ²H_11/2→⁴I_15/2, ⁴S_3/2→⁴I_15/2, (⁴F_9/2→⁴I_15/2) transitions, respectively was obtained as a result of energy transfer between Yb³⁺ and Er³⁺ ions. Developed tellurite glass characterized by highest intensity of upconversion luminescence (0.5mol% Yb₂O₃/0.1mol% Er₂O₃) was used as core of optical fiber. The analysis of influence of Yb³⁺/Er³⁺ co-doped tellurite optical fiber length on upconversion emission spectra was examinated.

In this paper an influence of the content of palladium on optical properties of fullerene-palladium nanocomposite was discussed, based on Effective Medium Theory (EMT). Since the complex refractive index of Pd is clearly different from the refractive index of fullerene, even a small admixture of metal leads to significant changes in value of effective index and consequently to change the reflection coefficient of the layer.

The article presents the luminescent based optical fiber transducer. The new construction of polymer optical fibre sensor with resonant energy transfer is shown. The idea and fabrication process of low cost optode is presented. The fluorescein and rhodamine B codoped polymethylmethacrylate (PMMA) sensitive layer exhibits the wide range of absorption spectrum ensures high source to optode spectrum alignment. The luminescent response under 430 and 470nm Light Emitting Diode (LED) source is shown. The experimental characteristic of sensor in the range from 293 K to 403 K is shown. The article presents also the potential applications of presented sensor.

This paper describes electrical method for measuring junction temperature of high power LEDs. Designed and constructed system with thermal chamber and performed a number of studies in typical operating conditions luminaires with LEDs. The results allow for proper construction of a complete LED lighting system using for operation in ambient temperatures ranging from -10ºC to 100ºC, especially in terms of matching the effective supply.

The paper presents design, simulation analysis, and measurements of parameters of optical multi touch panel backlight system. Comparison of optical technology with commercially available solutions was also performed. The numerical simulation of laser based backlight system was made. The influence of the laser power, beam divergence, and placing reflective surfaces on the uniformity of illumination were examined. Optimal illumination system was used for further studies.

In this work, spectroscopic ellipsometry combined with transmittance measurements in a spectral range of 0.6 - 6.5eV (2.2μm – 193nm) have been used to determine the thickness and optical constants of carbon-palladium thin films. The C-Pd nanocomposite samples are synthesised by physical vapour deposition and chemical vapour deposition methods on to fused silica substrates. The C₆₀ fullerene and palladium acetate are used as the source materials. The effective complex dielectric functions [equation-see manuscript] of the particulate films are found to depend strongly on preparation technology and concentration of Pd nanoparticles embedded in the carbon matrix. Optical parameterisation with a Drude-Lorentz model of the dielectric functions has been applied to match the experimental data. Influence of chemical treatment and Pd nanoparticles on structural disorder and relevant optical and electronic properties of the C-Pd samples is analysed.

In the article effect of temperature on luminescent properties of antimony - silicate glass co - doped with 1.0mol%Yb³⁺/1mol%0.2Tm³⁺ under 976 nm was investigated. As a result of optical excitation with radiation with the wavelength of 976 nm three luminescence bands were obtained: 477 nm for ¹G₄→³H₆ quantum transition, 650 nm for ₁G₄→³F₄ and 698 nm for ³F_2,3→3H6 in thulium ions, formed by the efficient Yb³⁺ → Tm³⁺ energy transfer. It has been found that the increase in temperature of a glass leads to higher probability of phonon transitions from the ¹G₄ to the ³F_2,3 level leading to quenching of luminescence band with the wavelength within the band of 650 nm. The maximum sensitivity to temperature change is 0.02139 [K^-1] at 250°C. The nature of a change over a range of studied temperature from 5 to 250°C is linear. The results of the research indicate that the fabricated glass can be used to construct luminescence temperature sensors.

This paper describes the construction, fabrication and properties of large-area ultra violet detector that is transparent in the visible range. The device was made on n-type 4H SiC substrate with a double epitaxial layer in which aluminum was implanted to form a p-n junction close to the surface, and a SiO₂ layer was formed for passivation, without a guard ring. The design of the top and bottom electrodes of 4mm diameter UV sensitive area allows not less than 20% visible range transmission. This transmission was measured across sensitive area of examined devices and was only 5% lower than that of the substrate before implantation and electrodes deposition.

The task of a short baseline stereo matching algorithm is to calculate the disparity map given two rectified images of one scene. Most algorithms assume that a maximal possible disparity exists and search all disparities in the range from 1 to this maximal disparity. In the case of large images and wide disparity search range this can be very computationally demanding. In this article a simple coarse to fine hierarchical matching method based on the Gaussian pyramid and local stereo matching is investigated. Such an approach allows significant reduction of the number of disparities searched compared to the full search algorithm. Moreover it is shown, that grouping pixels into simple square regions is in most cases sufficient to avoid significant errors that typically appear at disparity map discontinuities when hierarchical schemes are used. Finally, it is presented that in most cases the quality of the disparity map obtained using the investigated algorithm is of comparable quality to a disparity map obtained using full-search local stereo algorithm.

New video coding systems use very efficient algorithms and coding methods. Encoded stream can be fit even into narrow transmission channel. That is why effective rate control algorithms are needed to maximize usage of transmission resources. This paper presents test results of bitrate estimation instead of basic rate control algorithms for video sequences with inter-frame prediction. This approach may simplify rate control process by excluding complex errorbased operations. It is an important goal as recent rate control algorithms are quite complex and its implementation, particularly in hardware structures, may be inconvenient.

Unmanned Aerial Systems (UAS) are extensively used in diverse fields, wherever inexpensive and easy-to-deploy platforms are required for close-range remote sensing. Applications proposed in archaeology to date include ortho-photography and 3-D modeling. On the other hand, use of image processing and feature detection methods, well developed in other fields is hardly used. After reviewing technologies and methods for UAS-based surveying and surface modeling, we propose feature detection methods (e.g. line detection, texture segmentation) dedicated to extraction of structures in the images that are significant for archaeological survey, planning, and documentation and show results on selected case studies.

One of the techniques which had the biggest impact on the development of microelectronics, optoelectronics, photonics and other similar technologies was doping the substrates with various elements. Although many techniques have been developed resulting in reliable industrial designs, still there is a need of further development and optimization of some of them for specific applications. A very interesting method of doping is the ion implantation based on LIS (Laser Ion Source). The great advantage of this method is its ability to implant ions from any solid state material onto any substrate. Besides – a control of the laser irradiation parameters gives also a flexibility in the parameters of the implantation process, i.e. the ion energy which corresponds to the implantation depth and the ion flux which results in the concentration. On the other hand there are also drawbacks of the direct method – usually the power density of the laser beam needs to be higher than that offered by standard industrial solution and together with the dopant the contaminations present in the projectile are implanted. Another issue for the applications requiring high precision of the implanted layer depth and width is the relatively broad energy spread of the laser produced ions. To deal with this problems the research at the IPPLM was focused on the extent characterization of laser produced ion streams in the direct variant of the method and optimization of the method with the application of electrostatic field to accelerate, focus and shape the ion beams.

Pi of the Sky is a system of wide field-of-view robotic telescopes, which search for short timescale astrophysic phenomena, especially for prompt optical GRB emission. The system was designed for autonomous operatio , monitoring a large fraction of the sky with 12m-13m range and time resolution of the order of 1 - 10 second , and automatic flash recognition in real time. System design and observation stratedy was successfully tested with a prototype detector operational in 2004- 2009 at Las Campanas Observatory, Chile, and moved to San Pedro de Atacama Observatory in March 2011. In October 2010 the first unit of the final Pi of the Sky detector system, with 4 CCD cameras, was successfully installed in the INTA El Arenosillo Test Centre in Spain. Three more units (12 CCD cameras) are being prepared for installation on a new platform in INTA, aiming at a total coverage of about 6400 square degrees. Observation strategy and background conditions are different than those in Chile. Therefore additional selection algorithm are needed to improve rejection of false flash candidates selected by the on-line selection algrithm.

The development of RF particle accelerators was undoubtedly the great achievement of science and civilization which allowed for unique observations being in line with the Standard Model theory. On the other hand, this technology reached its limits of performance and building RF devices which would allow for obtaining significantly higher energy is questionable from physical and economic point of view. Due to this fact, a development of a different acceleration technique became of utmost importance. The candidate method is Laser Wakefield Acceleration (LWA). LWA may offer drastic reduction in the size of the accelerator; however; it demands an enormous laser systems to provide both high power density and average power. Presently operating laser systems offer sufficient power density but the crucial obstacle to overcome is the repetition rate which circumscribes the average power and the number of the collision events. To deal with this problem the ICAN (International Coherent Amplification Network) project has been proposed. It is aimed on the construction of high power, high repetition rate fiber laser which would be efficient for LWA for the particle accelerator and other applications including XFEL, transmutation, nuclear waste management and fundamental plasma research. It is worth mentioning that all technologies needed for the development of such a device are presently available just need to be upgraded and combined into one operating system. This contribution is a review of the mechanisms of acceleration of charged particles, fiber and optical techniques which will be employed in ICAN and its possible applications and perspectives.

The Pi of the Sky is a system of two wide field of view robotic telescopes, which search for short timescale astrophysical phenomena, especially for prompt optical GRB emission. The system was designed for autonomous operation, monitoring a large fraction of the sky with 12^m - 13^m range and time resolution of the order of 1 - 10 seconds. Two fully automatic Pi of the Sky detectors located in Spain (INTA) and Chile (SPDA) almost every night have been observing the sky in search of rare optical phenomena but also collect a lot of usefull observations which include e.g. many kinds of variable stars. To be able to draw proper conclusions from the data received, their adequate quality is very important. Data of the Pi of the Sky are subject to a systematic errors caused by various factors such as e.g. cloud cover seen as significant fluctuations in the number of stars observed by the detector, the problems with conducting mounting, a strong background of the moon or passing of a bright object near the observed star, such as a planet. Some of these adverse effects are already detected during the cataloging of individual measurements, but the quality of our data was still not satisfactory for us. In order to improve quality of our data we developed two new procedures which were based on two different approaches. In this article we will tell some words about these procedures, give an some examples and show how these procedures improve the quality of our data.

European X-Ray FEL – free electron laser is under construction in DESY Hamburg. It is scheduled to be operational at 2015/16 at a cost more than 1 billion Euro. The laser uses SASE method to generate x-ray light. It is propelled by an electron linac of 17,5GeV energy and more than 2km in length. The linac uses superconducting SRF TESLA technology working at 1,3 GHz in frequency. The prototype of EXFEL is FLASH Laser (200 m in length), where the “proof of principle” was checked, and from the technologies were transferred to the bigger machine. The project was stared in the nineties by building a TTF Laboratory -Tesla Test Facility. The EXFEL laser is a child of a much bigger teraelectronovolt collider project TESLA (now abandoned in Germany but undertaken by international community in a form the ILC). A number of experts and young researchers from Poland participate in the design, construction and research of the FLASH and EXFEL lasers.

This paper describes possible use of Sagnac interferometer, based on the polarization maintaining fiber, as an optical microphone. Operation of investigated setup is based on the refractive index changes induced by acoustic wave and fiber strain. In the conducted experiment, Sagnac interferometer working as an optical microphone was able to achieve 6 dB bandwidth up to 4.5 kHz. Possibilities for linear operation was examined as well. Experimental results are preceded by a mathematical analysis of the operating principles.

In this paper we present an evaluation of the chosen versions of Active Appearance Models (AAM) in varying background conditions. Algorithms were tested on a subset of the CMU PIE database and chosen background im- ages. Our experiments prove, that the accuracy of those methods is strictly correlated with the used background, where the differences in the success rate differ even up to 50%.

In this paper automated system for simultaneous measurement of spectral response and dispersion characteristics of optical fibers and passive fiber optic components (such as fiber Bragg gratings) is presented and validated. Using this setup transmitted and reflected spectra can be measured. The system is validated by comparison relative group delay characteristics of dispersion shifted fiber (DSF) obtained using presented setup as well as commercially available equipment. Moreover, the spectral reflection characteristics of linearly chirped fiber Bragg grating obtained using both presented system and optical spectrum analyzer are compared and discussed.

Pi of the Sky is a system of wide field-of-view robotic telescopes, which search for short time-scale astrophysical phenomena, especially for prompt optical GRB emission. On the other hand, the data could be used to search for variable stars. The analysis of variable star are based on precise photometry, which requires detailed image analysis. The main goal of cataloging procedure is to identify all objects in an image, and to add their measurements to the database. We would like to present new procedure to catalog data gathered with Pi of the Sky detector equipped with R filter in San Pedro de Atacama in season 2009-2011.

In this paper the numerical results of tapered fiber Bragg gratings modeling are shown. Presented model, based on coupled mode theory and transfer matrix method for tapered fiber Bragg gratings, gives highly accurate results for reflection width evaluation. Few simulations were made for three different configurations of tapered fiber Bragg structures, as well as comparison between theoretical and experimental results.

Silicon Carbide (SiC) photodiodes have been proposed in recent years for ultraviolet (UV) light detection because of their robustness even in harsh environments, high quantum efficiency in all the UV range (200nm-400nm), excellent visible and infra-red blindness excluding UV filters implementation, low dark current and high speed. 4H-SiC has a bandgap three times larger (3.26eV) than Si and, thus, SiC detectors should have much higher sensitivity than Si detectors. In this paper, we present an overview of results on 4H-SiC p-i-n junctions fabrication and characterization. We used implantation technique to obtain p-region of the investigated structure. The ohmic contacts were formed using evaporation, etching and lift-off. Current-voltage, contact resistance and electroluminescence are the main characteristics of the presented devices. All the diodes showed excellent rectification with leakage current density of less than 10^-9A/cm².

In this paper the comparative study of spectral transmission characteristics of tilted Bragg gratings made using uniform phase mask and chirped phase mask are presented. Results are focused on low tilt angles with special interest on cladding modes behavior. The spectral characteristic shape for simultaneously tilted and chirped Bragg gratings point out its potential applications as amplitude discriminator in fiber sensing applications and gain flattening element for EDFA.

Contemporary image acquisition devices introduce optical distortion into image. It results in pixel displacement and therefore needs to be compensated for many computer vision applications. The distortion is usually modeled by the Brown distortion model, which parameters can be included in camera calibration task. In this paper we describe original model, its dependencies and analyze orthogonality with regard to radius for its decentering distortion component. We also report experiments with camera calibration algorithm included in OpenCV library, especially a stability of distortion parameters estimation is evaluated.

This paper compares two face recognition methods based on Linear Discriminant Analysis: Subspace and Regularization method. These methods are tested for different parameters, different size of feature vector, Euclidean distance and modified Euclidean distance, for both LDA and Dual LDA method. Before using LDA, face images are described using selected frequency channels of DFT.

In this paper, I investigate a problem of finding most similar music tracks using, popular in Natural Language Processing, techniques like: TF-IDF and LDA. I de ned document as music track. Each music track is transformed to spectrogram, thanks that, I can use well known techniques to get words from images. I used SURF operation to detect characteristic points and novel approach for their description. The standard kmeans was used for clusterization. Clusterization is here identical with dictionary making, so after that I can transform spectrograms to text documents and perform TF-IDF and LDA. At the final, I can make a query in an obtained vector space. The research was done on 16 music tracks for training and 336 for testing, that are splitted in four categories: Hiphop, Jazz, Metal and Pop. Although used technique is completely unsupervised, results are satisfactory and encouraging to further research.

The aim of the paper is to show methods used by Pi of the Sky team to search for optical counterparts of GW event candidates during Looc-Up science run¹ and methods that we are planning to develop as part of the future Looc-Up. During the future joint GW-EM observations a new Pi of the Sky telescope unit could image more than 1/3 of GW candidate probability maps in less than 10 minutes, taking many pictures of the same observation eld. The system could automatically recognize optical transients and perform follow-ups of interesting events.

We present a review of short period variables of different types. In most cases there arc pulsating stars crossing instability strip on the Hertzsprung-Russell diagram. Study of these stars allows us to examine internal structure theory for stars near the end of their lives.

Pi of the Sky is a system of wide field-of-view robotic telescopes designed for observations of short timescale astrophysical phenomena, especially for prompt optical GRB emission. The apparatus was designed for autonomous operation, follows the predefined observing strategy and adopts it to the actual conditions, monitoring a large part of the sky with time resolution of the order of 1 - 10 seconds and range 12m-13m. Observation strategy and system design was successfully tested with a prototype detector working in 2004-2009 at Las Campanas Observatory, Chile, and moved to San Pedro de Atacama Observatory in March 2011. In October 2010 the first unit of the final Pi of the Sky detector system, with 4 CCD cameras, was successfully installed in the INTA El Arenosillo Test Centre in Spain. Simultaneous observations from locations in Chile and Spain allow a systematic search for optical transients of cosmological origin. Accurate analysis of data arising from a wide-field system like Pi of the Sky is a real challenge because of a number of factors that can influence the measurements. We have developed a set of dedicated algorithms which remove poor quality measurements, improve photometric accuracy and allow us to reach uncertainties as low as 0.015– 0.02 mag. Three more units (12 CCD cameras) are being prepared for installation on a new platform in INTA, aiming at a total coverage of about 6400 square degrees. Status and performance of the detectors is presented.

The paper describes a number of research projects of the Faculty of Mechatronics of Warsaw University of Technology in order to illustrate the use of common mechatronics and optomechatronics approach in solving multidisciplinary technical problems. Projects on sensors development, measurement and industrial control systems, multimodal data capture and advance systems for monitoring and diagnostics of industrial processes are presented and discussed.

The purpose of this study was to describe the design of the electronic module for testing bioimpedance measuring devices, for example impedance cardiographs or impedance pneumographs. Artificial Patient was conceived as an electronic equivalent of the impedance of skin-electrode interface and the impedance between electrodes - measured one. Different approaches in imitating a resistance of skin and an impedance of electrode-skin connection were presented. The module was adapted for frequently applied tetrapolar electrode configuration. Therefore the design do not enclose the elements simulating impedance between skin and receiver electrodes due to negligible effect of this impedance on the current flow through the receiver. The Artificial Patient enables testing either application generators, or receiver parts, particularly the level of noise and distortions of the signal. Use of digitally controlled potentiometer allows simulating different tissue resistances changes such as constant values, very-low-frequency and low-frequency changes corresponding to those caused by breathing or heart activity. Also it allows distorting signals in order to test algorithms of artifacts attenuation.

The application of the digital stethoscope system is a new tendency in methods of cardiac auscultation. Heart sounds, generated by the fluctuations of blood velocity and vibrations of muscle structure, are an important signal in the primary diagnosis of heart diseases. Since the XIXs century for physical examination an analog stethoscope was used, but the development of microelectronics enable the construction of digital stethoscopes which started modern phonocardiography. The typical hardware of the system could be divided into analog and digital parts, respectively. The first one consists of microphone and pre-amplifier. The second one contains a microcontroller with peripherals for data saving and transmission. Usually the specialized software is applied for the signal acquisition and digital signal processing (filtering, spectral analysis and others). This paper presents an overview of methods used in cardiac auscultation and expected developing path in the future. It also contains the description of our digital stethoscope system, which is planned to be used in poliphysiographical studies.

The purpose of this study was to examine the effect the body weight and position on the mechanical output of vibration platform measured as maximal acceleration of vertical sinusoidal oscillations of vibrating plate. We examined five subjects applying the frequencies 20, 25, 30, 35, 40 Hz and different amplifier’s voltage output fed to mechanical vibration generator. We found that at given frequency and voltage the greatest vibration of vibrating plate has been observed when subject stood on the forefoot; this effect was more distinctly pronounced at lower frequencies. The effect of body mass was less consistently evident. The effect of foot placement on the oscillations of vibration platform may be caused by different absorption of the mechanical energy by the body. We believe that in order to explain effect observed a mathematical model which accounts for body position on absorption of vibration along the trunk and mechanical properties of the platform should be constructed by combining already existing models of human body.

The aim of this paper is new application for de novo assembly DNA reads produced by next generation sequencers. The algorithm based on de Bruin graph is proposed, it uses both DNA strands: coding and complementary. The read errors are corrected. The repetitive sequences longer than read are correctly reconstructed in some cases. The application in client-server architecture was developed and tested on pseudo-random sequences and reads generated from genomes of model organisms.

This article describes new algorithm to combine shorter sequences representing fragments of DNA molecules, called contigs, into longer structure called scaffold. This algorithm is based on the constraint satisfaction approach. The computer program ‘PETconn’ which is using presented algorithm based on three-tier architecture was developed. User interface is accessible by browser. The algorithm properties explored on generated data are promising. Performed experiments proved the correctness of the algorithm, but its performance is insufficient for real data.

The aim of this article is to discuss the issue of comparing nucleotide sequences in order to detect chromosomal rearrangements (for example, in the study of genomes of two cucumber varieties, Polish and Chinese). Two basic algorithms for detecting rearrangements has been described: Smith-Waterman algorithm, as well as a new method of searching genetic markers in combination with Knuth-Morris-Pratt algorithm. The computer program in client-server architecture was developed. The algorithms properties were examined on genomes Escherichia coli and Arabidopsis thaliana genomes, and are prepared to compare two cucumber varieties, Polish and Chinese. The results are promising and further works are planned.

This paper presents a recording system optimized for long term measurement of bed headrest elevation angle in the Intensive Care Unit. The continuous monitoring of this parameter allows to find the correlation between the patient’s position in bed and the risk of the Ventilator Associated Pneumonia (VAP), a very serious problem in therapy of critically ill patients. Recorder might be be an important tool to evaluate the “care bundles” – sets of preventive procedures recommended for treatment of patients in the ICU.

A soft-docking system is one of the features of modern intraoperative radiotherapy (IORT) technology. It permits delivery of a single fraction of radiation to the surgically exposed tissue, whilst the treatment head is not in direct contact with the applicator. The aim of this study is to present the design of the positioning system for soft-docking of mobile linear accelerator that is being developed at the National Centre of Nuclear Research in Otwock-Świerk, Poland (NCBJ). Our proposed design includes four red laser beams installed along with the treatment head, and a specially prepared applicator with a pre-drawn reference circle. When the treatment head is correctly positioned, all four laser dots intersect with the circle. Numerical simulation showed that it is possible to minimize misalignment to around 0.5° angular and 1 mm linear with this model.

In the paper the authors present the developed optoelectronic system for controlled, repetitive exposure by electromagnetic radiation of biological structures in the Low Level Laser (LED) Therapy procedures. The set allows for objective selection and control of the irradiation parameters by light from spectral range of the tissues transmission window. Measurements of optical parameters of thin biological medium – spectral absorption coefficient and the amount of absorbed energy – can be implemented in the measuring chamber during irradiation treatment. The radiation source is the broadband illuminator consists of set of selected high power LEDs. The maximum optical power of single source is from 80 mW to 800 mW. Illuminator is controlled and powered by the multi-channel prototype control system, which allows independently control a current of each emitter. This control allows shaping spectral emission characteristic of broadband source in range 600-1000 nm. Illuminator allows providing in the working area of 700 cm² a uniform distribution of optical power density, of 10 mW/cm₂ for maximum. Set ensure uniform distribution of the spectral power density of up to 40 mW/nm.

The paper presents a methods of simplification of the human gait model. The experimental data were obtained in the laboratory of the group SATI in the Electronics Engineering Department of the University of Valencia. As a result of the Mean Double Step (MDS) procedure, the human motion were described by a matrix containing the Cartesian coordinates of 26 markers placed on the human body recorded in the 100 time points. With these data it has been possible to develop an software application which performs a wide diversity of tasks like array simplification, mask calculation for the simplification, error calculation as well as tools for signals comparison and movement animation of the markers. Simplifications were made by the spectral analysis of signals and calculating the standard deviation of the differences between the signal and its approximation. Using this method the signals of displacement could be written as the time series limited to a small number of harmonic signals. This approach allows us for a high degree of data compression. The model presented in this work can be applied into the context of medical diagnostics or rehabilitation because for a given approximation error and a large number of harmonics may demonstrate some abnormalities (of orthopaedic symptoms) in the gait cycle analysis.

Modern healthcare systems are designed to fulfill needs of the patient, his system environment and other determinants of the treatment with proper support of technical aids. A whole system of care is compatible to the technical solutions and organizational framework based on legal rules. The purpose of this study is to present how can we use Information and Communication Technology (ICT) systemic tools in a new model of patient-oriented care, improving the effectiveness of healthcare for patients with chronic diseases. The study material is the long-term process of healthcare for patients with chronic illness. Basing on the knowledge of the whole circumstances of patient’s ecosystem and his needs allow us to build a new ICT model of long term care. The method used is construction, modeling and constant improvement the efficient ICT layer for the patient-centered healthcare model. We present a new constructive approach to systemic process how to use ICT for information management in healthcare system for chronic disease patient. The use of ICT tools in the model for chronic disease can improve all aspects of data management and communication, and the effectiveness of long-term complex healthcare. In conclusion: ICT based model of healthcare can be constructed basing on the interactions of ecosystem’s functional parts through information feedback and the provision of services and models as well as the knowledge of the patient itself. Systematic approach to the model of long term healthcare assisted functionally by ICT tools and data management methods will increase the effectiveness of patient care and organizational efficiency.

The aim of the Test Infrastructure and Accelerator Research Area – the TIARA project[1] is to consolidate and support the European R&D program in the field of physics and techniques of particle accelerators. This project, partially funded by the European Commission, groups 11 participants from 8 European countries, including Poland. Its present, threeyear (2011-2013) preparatory phase (PP) is shortly described in this paper. The project is divided into 9 work packages (WP). We will concentrate on four of them dedicated to governance, R&D infrastructures, joint R&D programming, and education and training, in which Polish participants are actively involved.

The results of thermal modeling of a new cable insulation scheme proposed for a new set of larger aperture Nb-Ti inner triplet quadrupole magnets for LHC upgrade are presented. The new insulation scheme, so called enhanced insulation, is aiming at a more efficient heat transport from the coil to the helium bath. This scheme relies on leaving open helium paths between the bath and the cable. This report summarizes a detailed study of helium cooling channels efficiency in enhanced cable insulation as well as the heat evacuation schemes with respect to different cable insulation winding scheme. A numerical calculations and validation with experimental results showed that heat transfer efficiency of enhanced insulation is reduced, indicating that effective helium channels cross-sections are significant smaller than the nominal ones. The ANSYS analysis confirmed a significant decrease of helium channels cross-section caused by applied pressure. Also a new independent calculation of heat transfer confirmed the results presented in this paper.

The paper describes a concept of automatic resources identification algorithm used in reconfigurable measurement systems. In the paper is also presented a concept of algorithm for automatic generation of HDL codes (firmware) and management of reconfigurable measurement and control systems. Following sections are described in details: definition of measurement system, FMC boards installation, automatic FPGA startup configuration, automatic FMC detection and automatic card identification. Reconfigurable measurement and control systems are using FPGA devices and mezzanines in FMC standard. This work is a part of a wider project for automatic firmware generation and management of reconfigurable systems.