17 research outputs found

    Web servis Otvorenoga geoprostornog konzorcija u složenim sustavima distribucije

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    The short review of the Open Geospatial Consortium (OGC) web service with regard to Web Map Service (WMS) and Web Feature Service (WFS) has been given in this work from the perspective of server and client applications. The problems of the exchange of spatial data in the complex systems as municipal service have been described. Based on analysis of data exchange between employees in the same company and exchange between municipal services the existing condition has been schematically shown. Having this in mind, the proposal of measures has been given to improve communication by implementing distribution OGC web service with assumption that improvement of communication initiates the progress of overall system as well. Suggested solution is based on open source WMS/WFS servers and clients, but with remark that large number of commercial desktop GIS systems has inbuilt support for OGC web service. In the end it has been pointed out to some possible specialized client’s requests in regard to data safety and control of data access, as well as some extended types of data such as topological structures, surfaces and alike. Described model of distribution exchange can be applied to all complex systems, but within smaller systems such as companies which consist of more sectors.Rad prikazuje kratki pregled web servisa Otvorenog geoprostornog konzorcija (OGC) u odnosu na Web Map Service (WMS) i Web Feature Service (WFS) iz perspektive aplikacija servera i korisnika. Opisani su problemi razmjene prostornih podataka u složenom sustavu kao zajedničkom servisu. Na temelju analize razmjene podataka između zaposlenika u istoj tvrtki i razmjene između servisa zajednice shematski je prikazano postojeće stanje. Imajući to na umu dan je prijedlog mjera za poboljšanje komunikacije koristeći raspodjelu OGC web servisa pod pretpostavkom da poboljšanje komunikacije pokreće također i razvitak cjelokupnog sustava. Predloženo rješenje temelji se na serverima i klijentima otvorenog servisa WMS/WFS, uz napomenu da veliki broj komercijalnih desktop GIS sustava ima ugrađenu podršku za OGC web servis. Na kraju je ukazano na neke moguće zahtjeve klijenata u vezi sa sigurnošću podataka i kontrolom pristupa podacima, kao i nekim proširenim tipovima podataka kao što su topografske strukture, površine i slično. Opisani model razmjene može se primijeniti na sve složene sustave, ali unutar manjih sustava kao što su tvrtke koje se sastoje od više sektora

    Possible Application of Xenogeneic Osseous Implants in Dental Implantology

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    U rekonstrukciji koštanih defekata upotrebljavaju se autologni (autogeni), alogeni (homologni), ksenogeni (heterogeni) i aloplastični (sintetski) koštani usadci. Ksenogeni i aloplastični materijali danas su jedni od najčešće rabljenih materijala za rekonstrukciju koštanih defekata u oralnoj kirurgiji. Ksenogeni materijali proizvode se iz neorganskoga dijela životinjskih kostiju, a djeluju tako da potiču proces oseokondukcije. Karakterizira ih nastajanje nove kosti, apozicijom okolne kosti i diferenciranih mezenhimalnih stanica u avitalni koštani usadak. U radu je prikazano nekoliko slučajeva mogućnosti uporabe ksenogenoga materijala: 1. Uporaba ksenogenoga materijala kod gubitka bukalne stijenke gornjeg alveolarnoga grebena 2. Uporaba ksenogenoga materijala kod lateralnoga sinus liftinga 3. Uporaba ksenogenoga materijala nakon ekstrakcije zuba, cistektomije i imedijatne implantacije 4. Uporaba ksenogenoga materijala kod nedostatne visine i širine gornjeg alveolarnoga grebena 5. Uporaba ksenogenoga materijala nakon gubitka kosti zbog komplikacije nastale neadekvatnom implantacijom. Prikazani slučajevi upotrebe ksenogenoga koštanog usatka potvrdili su njegovu veliku uporabnu vrijednost u rekonstrukciji različitih vrsta koštanih defekata.In the reconstruction of bone defects use is made of autologous (autogenous), allogenous (homologous), xenogeneic (heterogeneous) and alloplastic (synthetic) osseous implants. Xenogeneic and alloplastic materials are today some of the most frequently used materials for the reconstruction of bone defects in oral surgery. Xenogeneic materials are produced from inorganic animal bones and have the effect of stimulating the process of osseoconduction. It is characterised by the formation of new bone by apposition of adjacent bones and differential mesenchymal cells in the non-vital bone implant. The paper presents several cases of possible application of xenogeneic material: 1. Application of xenogeneic material in the case of loss of the buccal wall of the upper alveolar ridge. 2. Application of xenogeneic material in lateral sinus lifting. 3. Application of xenogeneic material following tooth extraction, cystectomy and immediate implantation. 4. Application of xenogeneic material in the case of insufficient height and width of the upper alveolar ridge. 5. Application of xenogeneic material following the loss of bone due to complications caused by inadequate implantation. The presented cases of the application of xenogeneic osseous implant confirm the value of its comprehensive use in the reconstruction of various bone defects

    Evaluation of the Successfulness of Applying Polyglycol Copolymer Bone Replacements in the Treatment of Bone Defects of Odontogenetic Aetiology

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    Problem cijeljenja koštanih defekata odontogene etiologije najčešći je uzrok neuspjeha kirurškoga liječenja ostitičkog procesa. Ovim radom željeli smo vrjednovati uspješnost cijeljenja koštanih defekata nakon ugradnje novog aloplastičnog kopolimernog - poliglikolnog koštanog implantata (Fisiograft). Obrađeno je 45 ispitanika s ostitičkim procesom na zubima intrakanine regije. Rezultati su vrjednovani na osnovi denzitometrijskog mjerenja u razdoblju od dvanaest mjeseci od ugradnje. Dobiveni rezultati pokazuju da se poliglikolni kopolimerni koštani implantati mogu uspješno rabiti u liječenju koštanih defekata odontogene etiologije. Osnovna im je prednost sporija razgradnja, čime se osigurava povoljniji prostor za apoziciju nove kosti u lumen koštanog defekta, jednostavnost primjene u kliničkome radu i mogućnost međusobnog kombiniranja svih triju ponuđenih oblika.The problem of healing bone defects of odontogenetic aetiology is the most frequent cause of failure in surgical treatment of an ostitic process. The aim of this study was to valorise the successfulness of healing of bone defects after implantation of a new alloplastic copolymer - polyglycol bone implant (Fisiograft). A group of 45 subjects was examined with an ostitic process on teeth of the intracanine region. The results were valorised on the basis of densitometric measurement over a period of 12 months after implantation. The results obtained indicate that polyglycol copolymer bone implants can be successfully used in the treatment of bone defects of odontogenetic aetiology. Their fundamental advantage is slower biodegradation, which ensures a more suitable area for the apposition of new bone in the lumen of the bone defect, simple application in clinical work and the possibility of a mutual combination of all three available forms

    A geodynamical analysis of Earth's crust movements of regional character

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    Stanje Zemljine kore određeno je istovremenim i suprotstavljenim uticajem endodinamičkih i egzodinamičkih procesa. Površinski slojevi omotača Zemljine kore su u stalnom pokretu pod dejstvom uticaja, kao što su promena nivoa podzemnih voda, tektonske pojave, klizišta itd. Značajne deformacije mogu se javiti kao posledica niza regionalnih i lokalnih naponskih stanja, posebno u graničnim zonama litosfernih ploča, gde se akumuliraju naponi i javljaju nelinearne innterseizmičke deformacije. U disertaciji je prikazano istraživanje pomeranja Zemljine kore regionalnog karaktera sa geodetskog aspekta, na osnovu ponovljenih opažanja metodom satelitskog pozicioniranja, čime je dat doprinos multidisciplinarnom razumevanju stanja Zemljine kore.The state of the Earth’s crust is determined by the simultaneous and opposed influence of the endodynamic and exodynamic processes. The surface layers of the Earth’s crust envelope are in the state of permanent moving due to divers influences, such as the level variation of underground waters, tectonic phenomena, landslides, etc. Significant deformations can arise as a consequence of a number of regional and local strain states, especially in the boundary zones of lithosphere plates where strains are accumulated and non-linear interseismic deformations appear. The subject of the thesis is a study of movements of the Earth’s crust of regional character from the aspect of geodesy, on the basis of repeated observations by applying the satellite positioning method. In this way a contribution is given to a multidisciplinary concept of the state of the Earth’s crust

    Germination of beans and snap beans seed

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    Laboratorijskim ispitivanjem klijavosti obuhvaćeno je seme pasulja i boranije u sledećim varijantama: seme pasulja dobrog izgleda, seme pasulja lošeg izgleda, seme pasulja i boranija sa jasno vidljivim tragovima oštećenja pasuljevim žižkom i seme visoke linije boranije. Ogled, je postavljen kao dvofaktorijalni-blok sistem, u kojem je drugi faktor, pored genotipa, bilo tretiranje semena zamrzavanjem. Dobijeni rezultati ukazuju daje seme pasulja loše frakcije bilo najslabije klijavosti, ali da je ona prisutna. Iako je seme dobrog izgleda pažljivo odabrano, klijavost je nešto ispod standarda zakonom dozvoljene klijavosti. Seme sa izraženim prisustvom pasuljevog žižka, je u laboratorijskim ustavima zadržalo klijavost u značajnom stepenu. Između pasulja i boranija nema razlika u pogledu klijavosti. U poređenju semena ne tretiranog i tretiranog zamrzavanjem ne postoje razlike između pasulja i boranija.The aim of this study was to investigate germination of good bean seed of the variety Galeb and the bad bean seed of the same variety. We were also interested in germination of bean and snap bean seed damaged by grain weevil, and in germination of the seed treated by freezing which was aimed at controlling grain weevil by cold. We also recorded the differences between bean and snap bean seed, which was or was not treated by freezing in laboratory conditions. This investigation was carried out by applying the two factorial block system. The obtained results were evaluated by the variance analysis and x2 test These results suggest that the bean seed of a bad fraction had low levels of germination, but still it was present. Although the seed of good appearance was carefully selected, germination was slightly lower than it should have been. The seed with the large amount of grain weevils performed a high level germination in laboratory conditions. There were no differences in germination between the seed injured by grain weevil either in beans or in snap beans. As for the seed treated or untreated by freezing, there also were no differences between beans and snap beans

    Forecasting geodetic measurements using finite impulse response artificial neural networks

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    1743-1750In this paper, a method for evaluating and forecasting deformation movements present in buildings during tunneling works is described. The data used for processing is gathered from the project ’Prokop’ that has involved tunneling works under residential buildings, all mapped using a geodetic control network, or elevation network. Measurement results from this project are being used by the Finite Impulse Response (FIR) Neural Network as time series to predict future movements/deformations

    Studies of correlation between yield and fruit characteristics of (Lycopersicon esculentum Mill.) hybrids and their parental genotypes

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    The correlation between seven quantitative features of tomato (yield per plant, fruit weight, fruit length and width, number of fruits per plant, pericarp thickness, and number of locules per fruit) was studied in seven parental genotypes and 21 F1 hybrids. In both investigated generations there was a significant positive correlation between yield per plant, fruit weight, fruit length and width, and pericarp thickness. A significant negative correlation was recorded between mean fruit mass and number of fruits per plant. A significant positive correlation was found between fruit length and fruit width. Both traits were positively correlated with mean fruit mass. The number of locules per fruit was significantly and positively correlated with fruit weight, fruit length, fruit width and number of fruits per plant, whereas no relation of yield and fruit pericarp thickness with the number of locules was recorded

    Mode of inheritance for fruit firmness in tomato hybrids of F1 generation (Lycoperscum esculentum Mill.)

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    Savremeni programi selekcije paradajza imaju za cilj stvaranje genotipova sa čvrstim plodovima. Takvi plodovi se tokom berbe i transporta manje oštećuju, čime se direktno utiče na njihovu veću upotrebnu vrednost. Ukrštanjem sedam divergentnih genotipova paradajza koji su se međusobno razlikovali po čvrstini ploda, metodom punog dialela bespovratnih ukrštanja. dobijen je 21 hibrid F1 generacije. Analizom komponenata genetičke varijanse ustanovljeno je da su dominantni geni imali preovlađujuću ulogu u nasleđivanju ovog svojstva. Posmatrajući sve kombinacije ukrštanja zajedno može se zaključili da je super dominacija predstavljala način nasleđivanja u F1 generaciji. Hibridna kombinacija dobijena ukrštanjem dva najbolja opšta kombinatora (V-100 X no-10) odlikovala se najboljom posebnom kombinacionom sposobnošću.Present day program for tomato selection are aimed at creating the genotypes with firm fruit. The fruits with this quality surfer from minor injuries while being harvested and transported, which directly affects their better consumption purpose. By crossing seven divergent tomato genotypes that differed among themselves in fruit firmness, and by applying the method of full diallel without reciprocal crossings, we obtained 21 hybrids of F1 generation. Upon analyzing the components of the genetic variance we found out that dominant genes prevailed in inheriting this feature. Considering all the crossing combinations together, it could be concluded that super dominance was the mode of inheritance recorded in Fl generation. The hybrid combination obtained by crossing the two hybrids with the best general combining ability (V-100 x No-10) was characterized by the best specific combining ability

    Maintenance of prospective cabbage (Brassica oleracea var. capitata) lines by micropropagation

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    With the aim to improve the breeding process of cabbage (Brassica oleracea var. capitata) and to develop new cultivars in a shorter period of time, as well as to develop a basis for use of biotechnology methods, the in vitro propagation of Brassicas, was investigated. The experiments included 39 genotypes of different Brassicas, most of them cabbages. Shoot culture was obtained from segments of aseptically germinated seeds and from lateral shoots from plants grown in the open field and under cover. Shoot culture media for optimal growth and multiplication were elaborated. "Microplants" were planted in the open field. All the important conditions for the cloning process were evaluated

    Determination of volume excavation using modern survey technologies

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    The exploitation of mineral resources is an essential factor of economic and technological development of a country, whilst the surface exploitation is the most common. This paper presents the modern spatial dana collection technologies for the purpose of monitoring the exploitation of mineral resources in open pits. Different models of volume determination implemented within the software package AutoCAD Civil 3D have been shown. Bucket-wheel excavator are often used for the purposes of exploitation in the open cast mines. This paper presents the conceptual design of a system for volume determination of excavation by bucket wheel excavators in real time, based on GNSS technology
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