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Wyszukujesz frazę "medical information systems" wg kryterium: Temat


Wyświetlanie 1-10 z 10
Tytuł:
The JPEG2000 standard for medical image applications
Autorzy:
Przelaskowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/1965817.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska
Tematy:
image compression
JPEG 2000
medical images
wavelet coding
medical information systems
Opis:
A new standard of still image compression is characterised in the context of medical applications. Wide spectrum of JPEG2000 features is analysed with respect to its application potential to improve the performance of modern medical services (i.e. telemedicine, PACS, radiology information systems, wireless personal/home health care systems). Image data security techniques, error resilience technologies, client-side interactive Region of Interest (ROI) transmission and decoding (e.g. for teleconsultation with very large radiography exams), and storage of multiple image data sets are considered in detail. Selected tests of coders realized according to parts I and II of JPEG2000 for different modality test images are presented to evaluate the compression efficacy of this standard. Exemplary results of encoding process optimisation by wavelet transform and subband decomposition selection and screen-shots of software interfaces designed for these tests are also presented.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2004, 8, 2; 147-158
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A multi-agent architecture for interoperable medical information systems
Autorzy:
Zarour, K.
Zarour, N.
Powiązania:
https://bibliotekanauki.pl/articles/333934.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
system informacji medycznej
agent
interoperacyjność
ontologia
norma
medical information systems
interoperabilit
ontology
standard
Opis:
The Medical information systems evolve constantly. The quality of the medical information system relies on competences, qualifications, and the organization of the participating partners. Those last ones belong to heterogeneous and autonomous information systems. So, it is necessary to assure a permanent cooperation. This paper shows a coherent architectural framework that allows the development of interoperable medical information systems in measure or these systems evolve. The essential idea is to use concepts of multi-agent systems to perform the different activities of medical information system and thus, to adapt the solutions provided by the agent paradigm to solve the different problems encountered while establishing a medical information system.
Źródło:
Journal of Medical Informatics & Technologies; 2010, 15; 73-79
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal acoustic model complexity selection in polish medical speech recognition
Autorzy:
Sas, J.
Poreba, T.
Powiązania:
https://bibliotekanauki.pl/articles/333361.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
rozpoznawanie mowy
modele języka
medyczne systemy informacji
speech recognition
language models
medical information systems
Opis:
In the paper, the method of acoustic model complexity level selection for automatic speech recognition is proposed. Selection of the appropriate model complexity affects significantly the accuracy of speech recognition. For this reason the selection of the appropriate complexity level is crucial for practical speech recognition applications, where end user effort related to the implementation of speech recognition system is important. We investigated the correlation between speech recognition accuracy and two popular information criteria used in statistical model evaluation: Bayesian Information Criterion and Akaike Information Criterion computed for applied acoustic models. Experiments carried out for language models related to general medicine texts and radiology diagnostic reporting in CT and MR showed strong correlation of speech recognition accuracy and BIC criterion. Using this dependency, the procedure of Gaussian mixture count selection for acoustic model was proposed. Application of this procedure makes it possible to create the acoustic model maximizing the speech recognition accuracy without additional computational costs related to alternative cross-validation approach and without reduction of training set size, which is unavoidable in the case of cross-validation approach.
Źródło:
Journal of Medical Informatics & Technologies; 2011, 17; 115-122
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of local bidirectional language model to error correction in polish medical speech recognition
Autorzy:
Sas, J.
Powiązania:
https://bibliotekanauki.pl/articles/333597.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
rozpoznawanie mowy
modele języka
medyczne systemy informacji
speech recognition
language models
medical information systems
Opis:
In the paper, the method of short word deletion errors correction in automatic speech recognition is described. Short word deletion errors appear to be a frequent error type in Polish speech recognition. The proposed speech recognition process consists of two stages. At the first stage the utterance is recognized by a typical speech recognizer based on forward bigram language model. At the second stage the word sequence recognized by the first stage recognizer is analyzed and such pairs of adjacent words in the recognized sequence are localized, which are likely to be separated by a short word like conjunction or preposition. The probability of short word appearance in context of found words is evaluated using centered trigrams and backward bigram language model for short words prone to deletion. The set of probabilistic language properties used to correct deletions is called here Local Bidirectional Language Model (in contrast to purely forward or backward model used typically in speech recognition). The decision of short word insertion is based on comparison of deletion error probability of the first stage recognizer and the error probability of the decision based only on centered trigrams and backward model. Despite its simplicity, the method proved to be effective in correcting deletion errors of most frequently appearing Polish prepositions. The method was tested in application to medical spoken reports recognition, where the overall short word deletion error rate was reduced by almost 45%.
Źródło:
Journal of Medical Informatics & Technologies; 2010, 15; 127-134
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Building compact language models for medical speech recognition in mobile devices with limited amount of memory
Autorzy:
Sas, J.
Powiązania:
https://bibliotekanauki.pl/articles/332971.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
automatyczne rozpoznawanie mowy
medyczne systemy informacyjne
modelowanie języka
automatic speech recognition
medical information systems
language modeling
Opis:
The article presents the method of building compact language model for speech recognition in devices with limited amount of memory. Most popularly used bigram word-based language models allow for highly accurate speech recognition but need large amount of memory to store, mainly due to the big number of word bigrams. The method proposed here ranks bigrams according to their importance in speech recognition and replaces explicit estimation of less important bigrams probabilities by probabilities derived from the class-based model. The class-based model is created by assigning words appearing in the corpus to classes corresponding to syntactic properties of words. The classes represent various combinations of part of speech inflectional features like number, case, tense, person etc. In order to maximally reduce the amount of memory necessary to store class-based model, a method that reduces the number of part-of-speech classes has been applied, that merges the classes appearing in stochastically similar contexts in the corpus. The experiments carried out with selected domains of medical speech show that the method allows for 75% reduction of model size without significant loss of speech recognition accuracy.
Źródło:
Journal of Medical Informatics & Technologies; 2012, 20; 111-119
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal spoken dialog control in hands-free medical information systems
Autorzy:
Sas, J.
Powiązania:
https://bibliotekanauki.pl/articles/333081.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
rozpoznawanie mowy automatyczne
optymalizacja genetyczna
systemy informacji medycznej
automatic speech recognition
genetic optimization
medical information systems
Opis:
In the paper a method of optimal selection of utterances used as command entry-words for voice controlled application is presented. Voice controlled programs seem to be particularly useful in the area of medical informatics, where a physician interacts with a program by voice while operating the medical device or being involved in examinations requiring manual activities. The proposed method selects command words from sets of proposals defined for each command so as to minimize the overall probability of incorrect command recognition. First the entry-word dissimilarity matrix is calculated. The word dissimilarities are evaluated using HMM models consisting of appropriately trained acoustic models of the phonemes constituting words. The trained HMM is used as the sample utterance generator for the word. The artificially created utterance samples are then recognized by speech recognizers created for pairs of words. The estimation of correct recognition probability is used as the word dissimilarity measure. The word dissimilarities are then used to determine the average assessment of words selections that can be used as commands. Selection is created by choosing single word from sets of candidates defined for each command. Finally, suboptimal selection is found by using genetic algorithm. Experiments carried out prove that suboptimal selection of command entry-words can observably increase the accuracy of spoken commands recognition in many cases.
Źródło:
Journal of Medical Informatics & Technologies; 2009, 13; 113-120
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody analizy kognitywnej w medycznych systemach informacyjnych typu DSS
Methods of cognitive analysis in medical information systems of DSS-type
Autorzy:
Ogiela, L.D.
Powiązania:
https://bibliotekanauki.pl/articles/305554.pdf
Data publikacji:
2005
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
analiza kognitywna
medyczne systemy informacyjne
diagnostyka chorób centralnego układu nerwowego (CUN)
cognitive analysis
medical information systems
diagnostics of central nervous system lesions
Opis:
W pracy wykazano, że metody sztucznej inteligencji, a w szczególnosci mechanizmy lingwistyczne semantycznego wnioskowania znaczeniowego są możliwe do wykorzystania przy tworzeniu inteligentnych systemów informacyjnych, a także umożliwiają prowadzenie wnikliwej analizy znaczeniowej w prezentowanych systemach informacyjnych typu DSS. W pracy zostały przedstawione informatyczne mechanizmy opisu znaczeniowego obiektów na wybranych przykładach analizy obrazów rdzenia kręgowego. Procedury takiego wnioskowania semantycznego oparte są o model rezonansu kognitywnego i zostały zaaplikowane do zadania znaczeniowej interpretacji wybranego rodzaju zobrazowań diagnostycznych centralnego układu nerwowego jako modułu inteligentnej analizy w systemach informacyjnych. Prezentowana w pracy aplikacja ma charakter badawczy i służy opracowaniu skutecznych metod wykrywania poszukiwanych zmian na pewnym zbiorze danych pochodzących z badań magnetycznorezonansowych struktur rdzenia kręgowego.
This paper demonstrates that AI methods, in particular linguistic mechanisms of semantic meaning reasoning can be applied to the development of intelligent IT systems. They enable also conducting an in-depth meaning analysis in the presented DDS information systems. This paper presents also IT mechanisms of object meaning description on selected examples of spinal cord image analysis. The procedures for such semantic reasoning are based on the model of cognitive resonance. They have been applied to the task of meaning interpretation of a selected type of central nervous system diagnostic images, as an intelligent analysis module in IT systems. The application presented in this paper is of research character and it serves the preparation of efficient lesion detection methods applied to a dataset originating from magnetic and resonance examinations of the spinal cord structures.
Źródło:
Computer Science; 2005, 7; 105-114
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badanie jakości 52 stron internetowych o tematyce medycznej, stworzonych za pomocą technologii wiki
Autorzy:
Dobrogowska-Schlebusch, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/635239.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Internet, medical informatics, quality control, public health informatics, consumer health information, information systems
Opis:
Evaluation of the quality of 52 health-related websites, created with wiki technologyThe emergence of Web 2.0 philosophy of using Internet as a platform generated by all Internet users could have many implications for the future of healthcare. While application of the Web 2.0 tools, such as wikis, blogs, podcast and social networks to medicine and healthcare has definitely many benefits (e.g. to develop communication in healthcare and education), there is a growing concern about the quality of the sources of information built using these tools. According to general philosophy of the web 2.0 every Internet user could be the author of Internet’s content. Such a practice could be especially dangerous in case of sources of health related information, where the reliability and accuracy are especially crucial, because there is to much risk to harm the patient if inaccurate and misleading information was posted. The aim of the following study was to assess the quality of the sources of information, built with wiki technology (which is one of the web 2.0 applications).
Źródło:
Zdrowie Publiczne i Zarządzanie; 2009, 7, 1
2084-2627
Pojawia się w:
Zdrowie Publiczne i Zarządzanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of OpenEHR and HL7 FHIR Standards
Autorzy:
Kryszyn, Jacek
Smolik, Waldemar T.
Wanta, Damian
Midura, Mateusz
Wróblewski, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/2200724.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
medical computer systems
healthcare information technology
openEHR
HL7 FHIR
Opis:
Health informatics is characterized by the need to securely store, process and transmit large amounts of sensitive medical data while ensuring interoperability with other systems. Among many standards used in such systems there are two which have gained interest in recent years and cover most of those needs: openEHR and HL7 FHIR. In this paper, both standards are discussed and compared with each other. The architecture of both systems, the similarities and differences, methods of data modeling and ensuring interoperability were presented.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 1; 47--52
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proces informatyzacji i budowy systemu informatycznego zarządzania w organizacji non profit : Studium przypadku
The process of implementing information and building information systems in the management of a non-profit organization. Case study
Autorzy:
Wojtowicz, Anna
Wojtowicz, Witold
Powiązania:
https://bibliotekanauki.pl/articles/415762.pdf
Data publikacji:
2005
Wydawca:
Małopolska Wyższa Szkoła Ekonomiczna w Tarnowie
Tematy:
informatyczne systemy zarządzania
zarządzanie placówkami służby zdrowia
organizacje non-profit
szpitalnictwo
studium przypadku
management information systems
medical facilities management
non-profit organisations
hospital service
case study
Opis:
W zarządzaniu współczesną organizacją techniki informatyczne zajmują szczególne miejsce, gdyż w dużej mierze obieg informacji jest możliwy i realizowany poprzez ich użycie. Informatyzacja jest koniecznością wymuszoną przez otoczenie organizacji. Dotyczy to zarówno organizacji rynkowych działających dla zysku, jak i organizacji non profit. Celem artykułu jest ukazanie na przykładzie wybranego szpitala procesu jego informatyzacji i tworzenia systemu informatycznego wspomagającego proces zarządzania tą placówką.
In the management of a modern organization Information Technology takes a special place, as to a large degree information circulation is possible and carried out just through its use. Taking advantage of Information Technology becomes a necessity forced by the environment of an organization―starting with a compulsory clearance performed partly electronically and finishing with the need of having e-mail addresses and web pages of a company being essential from the marketing point of view. Used information technologies, and related to them procedures as well as change processes do not depend on the fact that we deal with an economic or non-economic organization, a production company, a company providing services or a non-profit company. The aim of the article is to show the case study of a hospital, where the process of creating and implementing information technology has been described as an example, and creating an information system which supports the process of managing this institution.
Źródło:
Zeszyty Naukowe Małopolskiej Wyższej Szkoły Ekonomicznej w Tarnowie; 2005, 7; 169-179
1506-2635
Pojawia się w:
Zeszyty Naukowe Małopolskiej Wyższej Szkoły Ekonomicznej w Tarnowie
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-10 z 10

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