Wyniki wyszukiwania - BazTech

1

Submarine landslides on the slope of a sandy barrier : A case study of the tip of the Hel Peninsula in the Southern Baltic

Rudowski R., Rucińska-Zjadacz M., Wróblewski R., Sitkiewicz P.

Geological Quarterly

|

2016

|

Vol. 60, No. 2

407--416

EN

The aim of the study is to present the occurrence of landslides on the submarine slope of a sandy barrier. The scale and significance of this phenomenon is discussed. The study area is the Hel Peninsula. It is a 35 km long young sandy spit. The landform is prograding into the deep part of Gdańsk Bay, and the underwater extension of its tip is a steep sandy slope. The tip is still poorly investigated, as it was a military area closed to researchers until 2003. The first detailed survey of the tip on the seabed was conducted aboard the research vessel “IMOR”. A multibeam echosounder, a sub-bottom profiler and a side-scan sonar were used, while grab and core samples of sediment were obtained. Many forms, commonly created as the result of underwater mass movement, were recognized and determined (main scarps, main bodies, landslide steps, landslide foots, series of small slides, “sheet” slides and structural slides). On the one hand, the landslide processes that occur in the tip of the Hel Peninsula are related to the natural development of sandy spits. On the other hand, they threaten the shore’s stability. The genesis of the landslides is still not known.

2

International Society for Telemedicine and eHealth (ISfTeH)

Rudowski R.

Bio-Algorithms and Med-Systems

|

2007

|

Vol. 3, no. 6

5--9

EN

The paper presents International Society for Telemedicine and eHealth. In the Introduction the history of the Society, starting from establishing in Kobe, Japan in1997, is described. Next the types of membership are listed. Following the mission, cooperation with key institutions (WHO among them) and activities are described. The mission of the ISfTeH is: The ISfTeH exists to facilitate the international dissemination of knowledge and experience in Telemedicine and eHealth and to provide access to recognized experts in the fi eld worldwide. The main ISfTeH activities are: the organization of annual international eHealth/telemedicine conferences, support for local conferences and start-up of national societies. Activities correspond to Working Groups which are Newsletter & Communication, Students and Education. Activity in which the author of the paper has been engaged is the promotion and dissemination of tools for achieving semantic interoperability, namely SNOMED CT. The registration of a new society in Poland – Polish Society of eHealth (PSeH) and the application for ISfTeH membership is mentioned. In Summary the opportunities given by the ISfTeH membership are listed.

3

An expert system supporting risk stratification in acute coronary syndromes

Grabowski M., Filipiak K. J., Rudowski R., Opolski G.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

|

2004

|

Vol. 8, No 2

281-286

EN

The aim of the project was to create a computer program, an expert system (ES), which would support physicians when a management for patients with acute coronary syndrome needs to be chosen. A knowledge database was created with the support of clinical experts, based on the current management standards. Data from new patients are added to the case database. The inference engine integrates two types of reasoning rule-based and case-based. The ES gives unambiguous and objective answers, its recommendation are reliable. At present, the ES is tested in clinical practice. Strategies recommended by the ES are compared with the management applied in a clinic.

4

Electronic patient record, expert system and mobile monitoring in Cardio.net project

Rudowski R., Grabowski M., Sierdziński J., Guć M.

Biocybernetics and Biomedical Engineering

|

2004

|

Vol. 24, no. 1

61-71

EN

Cardio.net project is aimed at the implementation of the prototype system of telecardiology in Mazovia and Pomerania Regions of Poland. It is planned as a tool to reduce the time from the onset of symptoms to the cardiological intervention, which can significantly reduce the mortality of patients with the acute coronary syndromes (ACS). The system will enable teleconsultations, from the reference centers to the regional hospitals, regarding the need for invasive cardiological intervention. If there is such a need then the patient will be transported to the reference center. The Cardio.net tasks include the design of telecommunication infrastructure, incorporating data transmission standards HL7, DICOM, work on the security and safety of the system, the design of Electronic Patient Record (EPR), uniform archive of EPR's and also the expert system. The EPR consist of two types of forms: a) personal data forms, b) forms supporting the physician work (case history, diagnosis, physical examination, the clinical course of hospitalization, additional tests and drugs). The tools used for creating EPR and archive of EPR's were PHP, Java Script, XML and MySQL. The risk stratification and therapeutic decision making in ACS are the main tasks of the expert system. There are two main therapeutic strategies: early invasive versus conservative. The chosen strategy depends on several factors. The expert system has been verified on the archival data of 147 patients with ACS. In 127 (86%) the expert system suggested the same strategy as applied by the cardiologist. In conclusion: uniform EPR and archive of EPR's give a chance of improving the quality of the cardiological care due to teleconsultations performed directly by specialists or indirectly by the expert system. Mobile monitoring and alerting can decrease the time from the onset of symptoms to the therapeutic intervention thus improving the patients safety,

5

Klasyfikatory z oceną wiarygodności decyzji i ich zastosowanie do wyboru strategii leczenia

Stawska Z., Jóźwik A., Grabowski M., Filipiak K., Rudowski R., Opolski G.

Automatyka / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie

|

2004

|

T. 8, z. 3

331-338

PL

W artykule została zaproponowana modyfikacja schematu podejmowania decyzji opartego na regule k najbliższych sąsiadów, polegająca na wprowadzeniu gradacji błędu. Stosowane do tej pory metody rozpoznawania obrazów pozwalają na ocenę jakości klasyfikacji jako funkcji prawdopodobieństwa mylnej decyzji. Prawdopodobieństwo to szacowane jest eksperymentalnie jako średni błąd klasyfikacji obiektów o znanej przynależności. Wprowadzenie gradacji błędów umożliwia oszacowanie prawdopodobieństwa mylnej decyzji w zależności od cech klasyfikowanego obiektu. Przedstawione podejście zostało zastosowane do analizy rzeczywistych danych dotyczących problemu rozpoznawania pacjentów z ostrym zespołem wieńcowym.

EN

A modification of the k nearest neighbor rule, which enables the classification confidence, is proposed. The quality of the standard classifiers is measured by the probability of misclassification estimated experimentally by a use of objects with known class membership. The error rate is computed as the percentage of misclassified objects. An error rate gradation enables the evaluation of the misclassification probability as a function of the object feature values. The presented approach was applied to an analysis of a real data related to the patients with acute coronary syndromes.

6

Distance based classifiers and their use to analysis of data concerned acute coronary syndromes

Jóźwik A., Stawska Z., Grabowski M., Filipiak K., Rudowski R., Opolski G.

Image Processing & Communications

|

2003

|

Vol. 9, no 3-4

45-52

EN

The paper presents effectiveness of classifiers based on distance function in application to real problem concerned acute coronary syndromes. The types of decision rules: the standard k-NN rule; its fuzzy version and the multistage decision rule that uses the class overlap idea are considered. In the case of the fuzzy k-NN rule the fuzzyness is applied only for decreasing a misclassification rate. The multistage classifier is taken into account because of its very desired property, which consist in possibility of determination whether a case being classified is difficult or easy for recognition. The more difficult is the case to be classified the more stages are required. This property enables an error rate gradation. In each stage the proposed classifier can make up one of the three following decisions: indicate a class number, reply :"I do not know" or qualifythe object to the next stage. A number of stages depend on the classified object. The analyzed data concern to the two-class decision problem that consist in prediction whether the patient will survive the period of one month or not.

7

Forced oscillation technique in mechanically ventilated patients

Rudowski R., Guć M.

Biocybernetics and Biomedical Engineering

|

2000

|

Vol. 20, no. 3

49-57

EN

The application of forced oscillation technique to the measurement of mechanical properties of respiratory system in mechanically ventilated patients is presented in the paper. The influence or endotracheal tube on measurement results and the correction procedure are described.

PL

W artykule przedstawiono zastosowanie metody wymuszonych oscylacji do pomiarów własności mechanicznych układu oddechowego u sztucznie wentylowanych pacjentów. Opisano wpływ rurki intubacyjnej na wyniki pomiarów oraz procedurę korygującą ten wpływ.