Advanced Signal Processing and Adaptive Learning Methods

[No abstract available

A form of MHD universal equations of unsteady incompressible fluid flow with variable elctroconductivity on heated moving plate

This paper deals with laminar, unsteady flow of viscous, incompressible and electro conductive fluid caused by variable motion of flat plate. Fluid electro conductivity is variable. Velocity of the plate is time function. Plate moves in its own plane and in "still" fluid. Present external magnetic filed is perpendicular to the plate. Plate temperature is a function of longitudinal coordinate and time. Viscous dissipation, Joule heat, Hole and polarization effects are neglected. For obtaining of universal equations system general similarity method is used as well as impulse and energy equation of described problem

The Concept of Creating and Designing of Overview Digital Hydrological Atlas Maps within the GIS Project

The paper presents the possibility of drafting and modelling of a part of geographic content of four overview atlas maps of Digital Hydrological Atlas of Serbia (DHAS), scale 1: 5000 000 by using available open access cartographic sources and data, and applying cartographic methods and established steps of GIS digitization. The mapping territory and the approximate DHAS structure have been defined in the paper, as well as the mathematical elements of the overview atlas maps. A way of obtaining new modified overview atlas maps through the GIS integration of various cartographic data representing a part of the territory of the continent of Europe has been presented. The advantages of contemporary cartographic and GIS systems for modelling digital atlases and thematic hydrological atlas maps have been explained

The role of leadership style and organizational justice in employee\u27s organizational identification

Cilj je ovog rada ispitati odnos procjene stila rukovođenja, organizacijske pravednosti i identifikacije s organizacijom. Posebno se u navedenom odnosu provjerava medijacijska uloga organizacijske pravednosti. Strukturalno modeliranje korišteno je u svrhu analize podataka prikupljenih na većem prigodnom uzorku zaposlenika organizacija različitih djelatnosti. Rezultati potvrđuju medijacijski efekt organizacijske pravednosti: aktivni stilovi rukovođenja (i transakcijsko i transformacijsko) pozitivno doprinose doživljaju organizacijske pravednosti, što za posljedicu ima jače izraženu identifikaciju s organizacijom. Pritom transformacijski stil rukovođenja ima pozitivne, direktne i indirektne efekte na organizacijsku identifikaciju, dok transakcijski stil samo indirektno, putem percepcije organizacijske pravednosti, pozitivno doprinosi identifikaciji zaposlenika s organizacijom. Aktivni stilovi rukovođenja i percepcija organizacijske pravednosti ukupno objašnjavaju približno četvrtinu varijance identifikacije s organizacijom. Raspravlja se o značenju rezultata za upravljanje ljudskim resursima, odnosno o važnosti aktivne uloge rukovoditelja u procesima i sustavima namijenjenima zadržavanju i motiviranju zaposlenika u organizaciji.The aim of this study is to verify the relationship between leadership style, organizational justice and organizational identification. Particularly, the mediating role of perceived organizational justice is explored. Structural equation modeling was used to analyze data collected on a large sample of employees from different rganizations. The results confirm the mediation effect of organizational justice: active leadership styles (both transactional and transformational) positively contribute to organizational justice perceptions, which results in stronger organizational identification. The transformational leadership style has a positive, direct and indirect effect on organizational identification while the transactional leadership style works indirectly, through the perceptions of organizational justice, positively contributing to organizational identification. Active leadership styles and organizational justice perceptions explain nearly a quarter of the total variance of organizational identification. The significance of the results for human resource management and the importance of the active role of managers in the processes and systems intended for retaining and motivating employees in an organization are discussed

Prediction of Pest Insect Appearance Using Sensors and Machine Learning

The appearance of pest insects can lead to a loss in yield if farmers do not respond in a timely manner to suppress their spread. Occurrences and numbers of insects can be monitored through insect traps, which include their permanent touring and checking of their condition. Another more efficient way is to set up sensor devices with a camera at the traps that will photograph the traps and forward the images to the Internet, where the pest insect’s appearance will be predicted by image analysis. Weather conditions, temperature and relative humidity are the parameters that affect the appearance of some pests, such as Helicoverpa armigera. This paper presents a model of machine learning that can predict the appearance of insects during a season on a daily basis, taking into account the air temperature and relative humidity. Several machine learning algorithms for classification were applied and their accuracy for the prediction of insect occurrence was presented (up to 76.5%). Since the data used for testing were given in chronological order according to the days when the measurement was performed, the existing model was expanded to take into account the periods of three and five days. The extended method showed better accuracy of prediction and a lower percentage of false detections. In the case of a period of five days, the accuracy of the affected detections was 86.3%, while the percentage of false detections was 11%. The proposed model of machine learning can help farmers to detect the occurrence of pests and save the time and resources needed to check the fields

Mogućnost erupcije donjeg trećeg molara - radiografska analiza

Backgraund/Aim. To assess the possibility of the eruption of the lower third molar on the basis of the measured parameters: retromolar space, mesiodistal crown width of a molar and the third molar angulation. Methods. The investigation included 104 patients both sexes (43 boys, and 61 girls), 16 to 25 years old (meanage, 18 years). It was performed using the orthopanthomographic radiographs analysis of those patients. Each radiograph was covered by tracing paper, and the contoures of the followiny anatomic details were drawn: a) the crown and root contours of third molars, upper and lower central incisors, distal molars in occlusion, anterior edge of ramus mandible, b) lines: 1. the occlusal plane, 2. the line of retromolar space, 3. the mesiodistal crown width of third molar, 4. the axial shaft of the third molar and the distal angle between occlusal plane and the axial shaft of the third molar. The values were measured with an orthodontic caliper: the diameter of retromolar space, diameter of mesiodistal width, the value of distal angle between occlusal plane and axial shaft of molar. Results. A favourable angulation of the lower third molar (more than 60°) was found in, boys (left 27.90%, right 32.55%), girls (left 39.34%, right 37.77%). A favourable relationship between the diameters of mesiodistal width of the third molar and retromolar space was found in, boys, (left 13.59%, right 16.27%), girls, (left 8.19%, right 14.75%). A favorable relationship between the diameters of mesiodistal width of the third molar and the retromolar space and the angulation was found in boys, (left 9.30%, right 11.62%), girls, (left 6.56%, right 9.83%). Conclusion. There was not any statistically significant difference found between the relation of the retromolar value, third molar mesiodistal diameter, or of the third molar angulation to the left and the right side nor of their mutual relations in comparing boys and girls. A favorable prognosis was found in 9.33% of the patients.Uvod/Cilj. Ovo istraživanje imalo je za cilj procenu mogućnosti nicanja donjeg trećeg molara na osnovu izmerenih parametara: retromolarnog prostora, meziodistalnog promera umnjaka i inklinacije umnjaka. Metode. Istraživanjem je obuhvaćeno 104 ispitanika (43 dečaka i 61 devojčica) oba pola, starosti 16−25 godina. Istraživanje se zasnivalo na ortopantomografskoj analizi. Na svaki ortopantomografski snimak zalepljen je paus papir i ucrtavane su konture anatomskih detalja: a) konture krunice i korena umnjaka, centralnih gornjih i donjih inciziva, poslednjih molara u okluziji, prednje ivice ramusa mandibule, b) linije: okluzalna ravan, linija retromolarnog prostora, meziodistalni promer krunice umnjaka, aksijalna osovina umnjaka i spoljašnji ugao između okluzalne ravni i aksijalne osovine umnjaka. Merene su vrednosti: veličina retromolarnog prostora, meziodistalni promer umnjaka, vrednost spoljašnjeg ugla između aksijalne osovine umnjaka i okluzalne ravni. Rezultati. Istraživanjem je ustanovljena povoljna inklinacija donjih umnjaka (više od 60°) kod dečaka − levo 27,90%, desno 32,55%; kod devojčica − levo 39,34%, desno 37,77%. Povoljan odnos meziodistalnog promera i retromolarnog prostora nađen je kod dečaka − levo 13,59%, desno 16,27%; kod devojčica − levo 8,19%, desno 14,75%. Povoljan odnos meziodistalnog promera, retromolarnog prostora i inklinacije nađen je kod dečaka − levo 9,30%, desno 11,62%; kod devojčica − levo 6,56%, desno 9,83%. Zaključak. Nije utvrđena statistički značajna razlika u odnosu veličine retromolarnog prostora, veličine meziodistalnog promera, stepena inklinacije umnjaka leve i desne strane, kao i njihovih odnosa upoređivanjem dečaka i devojčica. Povoljna prognoza nicanja donjih trećih molara nađena je kod 9,33% ispitanika

E-PLANE WAVEGUIDE BANDSTOP FILTER WITH DOUBLE SIDED PRINTED-CIRCUIT INSERT

In this paper a novel design of an E-plane bandstop waveguide filter with a double-sided printed-circuit insert is presented. Split-ring resonators are used as the resonating elements to obtain the bandstop response. The amplitude response of the waveguide resonator with a single resonating element on the insert is analyzed for various dimensions and positions of the split-ring resonator. The coupling between two resonators on the insert, in terms of their mutual distance, is considered as a next step to the filter design. Various positions of the resonators are considered, including the case with the resonators on the different sides of the insert, which is of interest for the proposed filter design. Finally, a third-order bandstop filter with a double-sided printed-circuit insert, operating in the X-frequency band, is introduced. The filter response is analyzed for various distances between the resonators and for various positions of the resonator printed on the other side of the insert. Proposed filter design is simple, providing for the accurate fabrication, miniaturization and possibility to relatively easy obtain multi-band response, using resonators with different resonant frequencies on the different sides of the insert

A NEW TELEREHABILITATION SYSTEM BASED ON INTERNET OF THINGS

Internet of Things (IoT) applied in healthcare system has huge potential to improve patients' quality of life. Representing network of devices embedded with electronics and sensors, IoT enables constant monitoring of vital body functions, tracking of physical activities of a person and aides rehab physical therapy. Such an IoT-based system would allow standalone recovery process, minimizing need of dedicated medical personnel and could be used in both hospital and home conditions. In this paper, we  present a telerehabilitation system that uses wearable muscle sensor and Microsoft Kinect to create interactive personalized physical therapy that can be carried out at home. Early experiments and results of pilot implementation validate the feasibility and effectiveness of the proposed IoT-enabled telerehabilitation system

Hydroxyapatite coatings on cp-titanium grade-2 surfaces prepared with plasma spraying

Thin hydroxyapatite coatings were produced on Cp-Titanium Grade-2 samples, with new high-voltage pulse-power equipment PJ-100 (Plasma Jet, Serbia) in order to get a more stable implant structure appropriate for further clinical applications. A comparative analysis of differently prepared surfaces of the Cp-Titanium Grade-2 samples was done before the hydroxyapatite was applied. Microstructural observation of the modified hydroxyapatite/implant surface was done using scanning-electron-microscopy imaging and Auger electron spectroscopy, with the aim of detecting the morphology and the elements contained in the new surfaces of the samples. The results confirmed that the surface of Cp-Titanium Grade-2 modified with hydroxyapatite is very similar to the bone structure

DESIGN OF 3D MODEL OF CUSTOMIZED ANATOMICALLY ADJUSTED IMPLANTS

Design and manufacturing of customized implants is a field that has been rapidly developing in recent years. This paper presents an originally developed method for designing a 3D model of customized anatomically adjusted implants. The method is based upon a CT scan of a bone fracture. A CT scan is used to generate a 3D bone model and a fracture model. Using these scans, an indicated location for placing the implant is recognized and the design of a 3D model of customized implants is made. With this method it is possible to design volumetric implants used for replacing a part of the bone or a plate type for fixation of a bone part. The sides of the implants, this one lying on the bone, are fully aligned with the anatomical shape of the bone surface which neighbors the fracture. The given model is designed for implants production utilizing any method, and it is ideal for 3D printing of implants