70 research outputs found
ZONALNA PROCJENA I INTERPOLACIJA KAO ISTOVREMENI PRISTUPI U SLUÄAJU MALOG ULAZNOG B ROJA PODATAKA (PRIMJER POLJA Å ANDROVAC, SJEVERNA HRVATSKA)
The Bjelovar Subdepression area in Northern Croatia was analysed, especially the Å androvac Field that is located in the northern part of the subdepression. In this example, e-log depth marker Zā, i.e. the Pannonian and Pontian boundary, was used as an input data. The data were statistically analysed for the entire subdepression from 497 data readings from the regular grid with cell size of 1x1 km that covers the existing palaeostructural map.
Then is selected 18 well data within the Å androvac Field where e-log markers are recognised (an example of a small number of data). They are also read directly for given structural map and mapped using one of the declustering methods known as Thiessen polygon method or Kriging. It is concluded when the mapping includes small number of data, and consequently local uncertainties, the subsurface mapping need to be done on both ways and maps compared.Analiziran je prostor Bjelovarske subdepresije, osobito polje Å androvac koje se nalazi u sjevernom dijelu. U ovom primjeru kao ulazni podatci uporabljene su dubine EK-markera Z\u27, tj. granice panona i ponta. One su statistiÄki analizirane na razini cijele subdepresije iz 497 podataka oÄitanih iz pravilne mreže s Äelijama veliÄine 1x1 km kojom je prekrivena postojeÄa paleostrukturna karta. Nadalje, odabrano je 18 buÅ”otinskih smjestiÅ”ta unutar polja Å androvac gdje su karotažom odreÄene dubine markera (primjer malog ulaznog broja podataka). I oni su oÄitani izravno sa spomenute karte te kartirani jednom od deklasterizacijskih metoda, tj. metodom Thiessenovih poligona ili kriginga. ZakljuÄeno je kada kartiranje ukljuÄuje znaÄaje lokalne nesigurnosti te mali broj podataka, opravdano je dubinsko kartiranje na oba prikazana naÄina te usporedba rjeÅ”enja
Mapping and reinterpretation of the geological evolution of the Bjelovar subdepression by universal kriging and new general methodological algorithms for mapping in similar areas
Analiziran je prostor Bjelovarske subdepresije na lokalnoj (polje Å androvac) i regionalnoj razini (cijela subdepresija). Ulazni podatci bile su dubine EK granice Pt/Tg i EK markera Rs7, Rs5, Z', Ī i D'. StatistiÄki je analizirano viÅ”e od sedamsto podataka oÄitanih s pravilne mreže kojom su prekrivene postojeÄe paleostrukturne karte, s Äelijama veliÄine 2x2 km. Kartirano je metodama Thiessenovih poligona (program SAGA GIS) i krigiranja (Surfer). Poligonalna, tj. zonalna procjena uporabljena je kao jednostavna i brza metoda prikaza dubina. Krigiranje je dalo znatno bolje regionalne karte. ObiÄno krigiranje je dokazano u veÄini sluÄajeva kao najbolja moguÄa interpolacija podataka dubine (Pt/Tg, Rs7, Z' i D'), uz najmanje vrijednosti krosvalidacije. Njome su interpolirane karte debljina formacija iz kojih su reinterpretirani neogensko-kvartarni okoliÅ”i. Nadalje, unutar pojedinaÄnih struktura, tehnika univerzalnoga krigiranja odreÄena je kao najprimjerenija interpolacijska metoda, jer je samo u takvim sluÄajevima bilo moguÄe izdvojiti jasan linearni trend u pružanju i dubinama promatrane strukture.The area of Bjelovar subdepression was analyzed at the local (Å androvac Field) and regional level (the entire subdepression). Input data were depths of Pt/Tg e-log border and Rs7, Rs5, Zā, Ī and D' e-log markers. More than seven hundred data were statistically analyzed. The data were collected in a regular grid that covers the existing paleostructural maps, with cells 2x2 km in size. Mapping was carried out using Thiessen polygon method (program SAGA GIS) and Kriging (Surfer). The polygonal, i.e. the zonal assessment was used as a simple and fast method for displaying depths. Kriging gave significantly better regional maps. Ordinary Kriging has been proved in most cases to be the best possible interpolation of depth data (Pt/Tg, Rs7, Z' and D'), with the lowest cross-validation values. It was used for interpolation of formation thickness maps from which Neogene-Quaternary environments were reinterpreted. Furthermore, within the individual structures, Universal Kriging technique is determined as the most appropriate interpolation method, because it was only possible in such cases to extract a clear linear trend in extent and depths of the observed structure
CONTRIBUTION TO TERMINOLOGY AND APPLICATION OF NEW GEOSTATISTICAL MAPPING METHODS IN CROATIA - UNIVERSAL KRIGING
Napretkom znanosti i razvojem raÄunala omoguÄena je obradba i analiza velike koliÄine podataka zbog Äega su geostatistiÄke metode postale neizostavne prilikom istraživanja i prikazivanja rezultata u raznim geoznanostima. Jedna od najpoznatijih i najtoÄnijih geostatistiÄkih metoda procjene jest metoda krigiranja, koja procjenjuje vrijednosti analizirane varijable na neuzorkovanim smjestiÅ”tima. Postoje razliÄite tehnike krigiranja, a najÄeÅ”Äe koriÅ”tena jest obiÄno krigiranje, kako na svjetskoj razini, tako i u hrvatskoj geologiji. Ovdje je opisana tehnika univerzalnoga krigiranja, svrha uporabe navedene tehnike te je opisana terminologija vezana za nju s ciljem lakÅ”ega razumijevanja i koriÅ”tenja. RijeÄ je o tehnici koja je najprimjerenija kada su ulazni podatci obilježeni trendom, a kao takva može se Äesto primijeniti u geologiji.Advancement of science and computer development enabled the processing and analysis of large amounts of data for which the geostatistical methods have become indispensable when researching and presenting the results in a variety of geosciences. One of the most noted and most accurate geostatistical estimation method is Kriging method, which estimates the value of the analysed variables at unsampled locations. There are several Kriging techniques, while the most widely used is Ordinary Kriging, at the global level, as well as in Croatian geology. Here was Universal Kriging described, the purpose of its use and the terminology associated with it in order to facilitate the understanding and use of this technique. It is a technique that is most appropriate when the input data is marked by a trend, and as such can often be applied in geology
Mapping and reinterpretation of the geological evolution of the Bjelovar subdepression by universal kriging and new general methodological algorithms for mapping in similar areas
Analiziran je prostor Bjelovarske subdepresije na lokalnoj (polje Å androvac) i regionalnoj razini (cijela subdepresija). Ulazni podatci bile su dubine EK granice Pt/Tg i EK markera Rs7, Rs5, Z', Ī i D'. StatistiÄki je analizirano viÅ”e od sedamsto podataka oÄitanih s pravilne mreže kojom su prekrivene postojeÄe paleostrukturne karte, s Äelijama veliÄine 2x2 km. Kartirano je metodama Thiessenovih poligona (program SAGA GIS) i krigiranja (Surfer). Poligonalna, tj. zonalna procjena uporabljena je kao jednostavna i brza metoda prikaza dubina. Krigiranje je dalo znatno bolje regionalne karte. ObiÄno krigiranje je dokazano u veÄini sluÄajeva kao najbolja moguÄa interpolacija podataka dubine (Pt/Tg, Rs7, Z' i D'), uz najmanje vrijednosti krosvalidacije. Njome su interpolirane karte debljina formacija iz kojih su reinterpretirani neogensko-kvartarni okoliÅ”i. Nadalje, unutar pojedinaÄnih struktura, tehnika univerzalnoga krigiranja odreÄena je kao najprimjerenija interpolacijska metoda, jer je samo u takvim sluÄajevima bilo moguÄe izdvojiti jasan linearni trend u pružanju i dubinama promatrane strukture.The area of Bjelovar subdepression was analyzed at the local (Å androvac Field) and regional level (the entire subdepression). Input data were depths of Pt/Tg e-log border and Rs7, Rs5, Zā, Ī and D' e-log markers. More than seven hundred data were statistically analyzed. The data were collected in a regular grid that covers the existing paleostructural maps, with cells 2x2 km in size. Mapping was carried out using Thiessen polygon method (program SAGA GIS) and Kriging (Surfer). The polygonal, i.e. the zonal assessment was used as a simple and fast method for displaying depths. Kriging gave significantly better regional maps. Ordinary Kriging has been proved in most cases to be the best possible interpolation of depth data (Pt/Tg, Rs7, Z' and D'), with the lowest cross-validation values. It was used for interpolation of formation thickness maps from which Neogene-Quaternary environments were reinterpreted. Furthermore, within the individual structures, Universal Kriging technique is determined as the most appropriate interpolation method, because it was only possible in such cases to extract a clear linear trend in extent and depths of the observed structure
Mapping and reinterpretation of the geological evolution of the Bjelovar subdepression by universal kriging and new general methodological algorithms for mapping in similar areas
Analiziran je prostor Bjelovarske subdepresije na lokalnoj (polje Å androvac) i regionalnoj razini (cijela subdepresija). Ulazni podatci bile su dubine EK granice Pt/Tg i EK markera Rs7, Rs5, Z', Ī i D'. StatistiÄki je analizirano viÅ”e od sedamsto podataka oÄitanih s pravilne mreže kojom su prekrivene postojeÄe paleostrukturne karte, s Äelijama veliÄine 2x2 km. Kartirano je metodama Thiessenovih poligona (program SAGA GIS) i krigiranja (Surfer). Poligonalna, tj. zonalna procjena uporabljena je kao jednostavna i brza metoda prikaza dubina. Krigiranje je dalo znatno bolje regionalne karte. ObiÄno krigiranje je dokazano u veÄini sluÄajeva kao najbolja moguÄa interpolacija podataka dubine (Pt/Tg, Rs7, Z' i D'), uz najmanje vrijednosti krosvalidacije. Njome su interpolirane karte debljina formacija iz kojih su reinterpretirani neogensko-kvartarni okoliÅ”i. Nadalje, unutar pojedinaÄnih struktura, tehnika univerzalnoga krigiranja odreÄena je kao najprimjerenija interpolacijska metoda, jer je samo u takvim sluÄajevima bilo moguÄe izdvojiti jasan linearni trend u pružanju i dubinama promatrane strukture.The area of Bjelovar subdepression was analyzed at the local (Å androvac Field) and regional level (the entire subdepression). Input data were depths of Pt/Tg e-log border and Rs7, Rs5, Zā, Ī and D' e-log markers. More than seven hundred data were statistically analyzed. The data were collected in a regular grid that covers the existing paleostructural maps, with cells 2x2 km in size. Mapping was carried out using Thiessen polygon method (program SAGA GIS) and Kriging (Surfer). The polygonal, i.e. the zonal assessment was used as a simple and fast method for displaying depths. Kriging gave significantly better regional maps. Ordinary Kriging has been proved in most cases to be the best possible interpolation of depth data (Pt/Tg, Rs7, Z' and D'), with the lowest cross-validation values. It was used for interpolation of formation thickness maps from which Neogene-Quaternary environments were reinterpreted. Furthermore, within the individual structures, Universal Kriging technique is determined as the most appropriate interpolation method, because it was only possible in such cases to extract a clear linear trend in extent and depths of the observed structure
USPOREDBA OBIÄNOGA I UNIVERZALNOGA KRIGIRANJA NA PRIMJERU INTERPOLACIJE DUBINSKE VARIJABLE S LINEARNIM TRENDOM, ANALIZA POLJA Å ANDROVAC
Universal Kriging has not until now been used for mapping of geological data in Croatia. However, it is one of the most frequently used methods of Kriging, probably the most adequate in cases when the input data is marked by a common trend. That exact feature is often an attribute of deep geological data, and thereby that of structural maps. Mapped surfaces in a row of examples have a structural trend towards one cardinal direction, or a sequence of geological structures, like anticlinorium, is a part of a structural unit of a higher order such as regional monocline. An example is given of geographical trend recognition in e-log Zā surface spread in Å androvac Field as well as successful mapping of that marker depth variable by using Universal Kriging.Univerzalno krigiranje do sada nije koriÅ”teno pri kartiranju geoloÅ”kih podataka u Hrvatskoj. MeÄutim, radi se o jednoj od ÄeÅ”Äih metoda krigiranja, vjerojatno najprimjerenijoj u sluÄajevima kada su ulazni podatci obilježeni zajedniÄkim trendom. Upravo takvo obilježje vrlo je Äesto svojstvo dubinskih geoloÅ”kih podataka, a time i strukturnih karata. Kartirane plohe u nizu primjera imaju strukturni nagib prema jednoj strani svijeta. Äesto je niz geoloÅ”kih struktura, poput antiklinorija, dio strukturne jedinice veÄega reda poput regionalne monokline. U radu je dan primjer prepoznavanja zemljopisnoga trenda u pružanju plohe EK markera Zā u polju Å androvac te uspjeÅ”noga kartiranja te plohe, odnosno dubinske varijable, univerzalnim krigiranjem
Models for measuring of knowledge management and e-business systems success
The resulting model of the measurement of knowledge management system success is used to classify the abundant variables described in a large number of empirical studies and comprises six components. On the basis of some resources and on the basis of this literature review, the DeLone/McLean model for information system (IS) success measurement is selected and discussed. We also give a figure to show that the six categories are interrelated and describe a process view of knowledge management success, a series of constructs which include temporal and casual influences in determining success. The clear structuring of the measures and especially the interrelationships hypothesized in DeLone/McLean model have been subject to repeated criticism. Finally some critics are reviewed and developed of extensions to this model. We have extended the original DeLone/McLean model, respecified parts of the interrelationships, and even presented alternative models that follow an entirely different logic. The new model allows for a much more comprehensive analysis of independent factors influencing knowledge management system success and takes into account most of
critique directed at the original DeLone/McLean model
Magnetska rezonancija kao dio Å”ireg pristupa dijagnostici epileptiÄnog napadaja u pasa - dva sluÄaja hidrocefalusa u pasa s viÅ”estrukim epileptiÄnim napadajima
This paper describes two cases of hydrocephalus in dog. Both dogs were presented at the Clinic for Internal Diseases, Faculty of Veterinary Medicine, Zagreb, after having experienced cluster seizures and status epilepticus, respectively. In each dog physical and neurological examination was performed, revealing no abnormalities. Complete laboratory workup and urinalysis were included for each dog and all results were within reference range. Both dogs underwent magnetic resonance (MR) imaging and through this procedure a diagnosis of hydrocephalus was established. Anticonvulsive therapy and therapy against increased intracranial pressure was introduced in both dogs. Treatment resulted in marked clinical improvement.U radu su prikazana dva sluÄaja hidrocefalusa u pasa. Psi su dovedeni na Kliniku za unutarnje bolesti Veterinarskog fakulteta SveuÄiliÅ”ta u Zagrebu nakon epileptiÄnih napadaja koji su se javljali u nizu, tj. kao status epilepticus. Oba su psa bila podvrgnuta opÄoj kliniÄkoj pretrazi te neuroloÅ”kom pregledu prilikom kojih nisu otkrivena odstupanja od normale. Sve hematoloÅ”ke i biokemijske vrijednosti te nalazi analize mokraÄe nalazili su se unutar referentnih vrijednosti. U oba je psa provedena magnetska rezonancija kojom je postavljena dijagnoza hidrocefalusa. Pacijenti su podvrgnuti antikonvulzivnoj terapiji te terapiji za smanjenje intrakranijalnog tlaka, nakon Äega je uslijedilo znatno kliniÄko poboljÅ”anje
Sindrom sustavnoga upalnoga odgovora i sindrom viŔestrukog zatajivanja organa u pasa s babeziozom
Canine babesiosis caused by Babesia canis canis is one of the commonest canine diseases in Croatia, especially in the area of capital city, Zagreb. Babesiosis is a multi-system disease and multiple organ dysfunction syndrome (MODS) develops from systemic inflfl ammatory response syndrome (SIRS), which is a hallmark of babesiosis. Therefore, the purpose of this study was to conduct detailed research of the incidence of SIRS and MODS as well as organ systems involvement in a large number of dogs naturally infected with B. canis canis in Croatia. Out of 332 dogs with canine babesiosis, 226 dogs (68 percent) fulfilled the SIRS criteria and were considered as SIRS positive. Among them 151 dogs (67%) fulfilled two SIRS criteria, 66 dogs (29%) fulfilled three criteria and only 9 dogs (4%) fulfilled all four SIRS criteria. Thirty-three dogs (10%) fulfilled the MODS criteria. Among them 22 dogs (66%) had two organ involvement, 10 dogs (31%) had three organ involvement and in only 1 dog (3%) four organ dysfunction was present. The incidence of organ involvement in MODS was as follows: renal dysfunction (30/33), liver dysfunction (20/33), muscle involvement (19/33), lung dysfunction (16/33), cerebral involvement (3/33). Among MODS positive dogs, 22 dogs died and 11 dogs survived babesiosis. In dogs with two organ involvement, survival was 45%, in dogs with three organ involvement survival was 10%, while in the group with four organ dysfunction mortality was 100%. It can be concluded that in cases of canine babesiosis caused by B. canis canis, in which MODS developed, an unfavourable outcome should be taken into consideration.Babezioza uzrokovana praživotinjom Babesia canis canis jedna je od najÄeÅ”Äih bolesti pasa u Hrvatskoj, osobito u podruÄju oko glavnoga grada Zagreba. Babezioza je bolest koja zahvaÄa viÅ”e organskih sustava, a sindrom viÅ”estrukoga zatajenja organa (engl. multiple organ dysfunction syndrome) razvija se iz sindroma sustavnog upalnog odgovora (engl. systemic infl ammatory response syndrome), koji je karakteristiÄan za babeziozu. Cilj ovoga rada bio je prouÄiti pojavnost sindroma sustavnog upalnog odgovora i sindroma viÅ”estrukoga zatajenja organa na velikom broju pasa koji boluju od babezioze, kao i uÄestalost zahvaÄenosti pojedinih organskih sustava u sindromu viÅ”estrukoga zatajenja organa. Od 332 psa s potvrÄenom babeziozom 226 pasa (68%) razvilo je sindrom sustavnog upalnog odgovora. Od njih je 151 pas (67%) ispunio 2 kriterija, 66 pasa (29%) ispunilo je 3 kriterija, dok su u 9 pasa (4%) bila ispunjena sva Äetiri kriterija. Trideset i tri psa ispunila su kriterije za sindrom viÅ”estrukoga zatajenja organa. Od njih su 22 psa (66%) imala zahvaÄena po dva organska
sustava, 10 pasa (31%) imalo je zahvaÄena tri organska sustava, dok je samo 1 pas (3%) imao zahvaÄena Äetiri organska sustava. NajÄeÅ”Äe zahvaÄeni organski sustavi u sindromu viÅ”estrukoga zatajenja organa bili su: uropoetski sustav (30/33), jetra (20/33), miÅ”iÄje (19/33), diÅ”ni sustav (16/33) i srediÅ”nji živÄani sustav (3/33). Od pasa koji su razvili sindrom viÅ”estrukoga zatajenja organa 22 su uginula dok ih je 11 preživjelo babeziozu. Preživljavanje pasa u kojih su bila zahvaÄena 2 organska sustava bilo je 45%, sa zahvaÄena 3 organska sustava bilo je 10%, dok je smrtnost sa zahvaÄena 4 organska sustava iznosila 100%. Na temelju rezultata se može zakljuÄiti da je razvoj sindroma viÅ”estrukoga zatajenja organa u babeziozi pasa prognostiÄki znaÄajan i da u sluÄaju da se sindrom razvije raste i vjerojatnost nepovoljnog ishoda
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