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1160 records – page 1 of 116.

[Approaches in forecasting population health indicators].

https://arctichealth.org/en/permalink/ahliterature168462
Source
Probl Sotsialnoi Gig Zdravookhranenniiai Istor Med. 2005 Nov-Dec;(6):3-5
Publication Type
Article
Author
V A Medik
B F Kir'ianov
Source
Probl Sotsialnoi Gig Zdravookhranenniiai Istor Med. 2005 Nov-Dec;(6):3-5
Language
Russian
Publication Type
Article
Keywords
Algorithms
Forecasting
Health status
Humans
Russia
PubMed ID
16821302 View in PubMed
Less detail

Towards a formal genealogical classification of the Lezgian languages (North Caucasus): testing various phylogenetic methods on lexical data.

https://arctichealth.org/en/permalink/ahliterature269426
Source
PLoS One. 2015;10(2):e0116950
Publication Type
Article
Date
2015
Author
Alexei Kassian
Source
PLoS One. 2015;10(2):e0116950
Date
2015
Language
English
Publication Type
Article
Keywords
Algorithms
Dagestan
Linguistics - classification
Pedigree
Phylogeny
Abstract
A lexicostatistical classification is proposed for 20 languages and dialects of the Lezgian group of the North Caucasian family, based on meticulously compiled 110-item wordlists, published as part of the Global Lexicostatistical Database project. The lexical data have been subsequently analyzed with the aid of the principal phylogenetic methods, both distance-based and character-based: Starling neighbor joining (StarlingNJ), Neighbor joining (NJ), Unweighted pair group method with arithmetic mean (UPGMA), Bayesian Markov chain Monte Carlo (MCMC), Unweighted maximum parsimony (UMP). Cognation indexes within the input matrix were marked by two different algorithms: traditional etymological approach and phonetic similarity, i.e., the automatic method of consonant classes (Levenshtein distances). Due to certain reasons (first of all, high lexicographic quality of the wordlists and a consensus about the Lezgian phylogeny among Caucasologists), the Lezgian database is a perfect testing area for appraisal of phylogenetic methods. For the etymology-based input matrix, all the phylogenetic methods, with the possible exception of UMP, have yielded trees that are sufficiently compatible with each other to generate a consensus phylogenetic tree of the Lezgian lects. The obtained consensus tree agrees with the traditional expert classification as well as some of the previously proposed formal classifications of this linguistic group. Contrary to theoretical expectations, the UMP method has suggested the least plausible tree of all. In the case of the phonetic similarity-based input matrix, the distance-based methods (StarlingNJ, NJ, UPGMA) have produced the trees that are rather close to the consensus etymology-based tree and the traditional expert classification, whereas the character-based methods (Bayesian MCMC, UMP) have yielded less likely topologies.
Notes
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PubMed ID
25719456 View in PubMed
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Data analytics approach to create waste generation profiles for waste management and collection.

https://arctichealth.org/en/permalink/ahliterature294397
Source
Waste Manag. 2018 Jul; 77:477-485
Publication Type
Journal Article
Date
Jul-2018
Author
Harri Niska
Ari Serkkola
Author Affiliation
Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland. Electronic address: harri.niska@uef.fi.
Source
Waste Manag. 2018 Jul; 77:477-485
Date
Jul-2018
Language
English
Publication Type
Journal Article
Keywords
Algorithms
Finland
Recycling
Refuse Disposal
Waste management
Abstract
Extensive monitoring data on waste generation is increasingly collected in order to implement cost-efficient and sustainable waste management operations. In addition, geospatial data from different registries of the society are opening for free usage. Novel data analytics approaches can be built on the top of the data to produce more detailed, and in-time waste generation information for the basis of waste management and collection. In this paper, a data-based approach based on the self-organizing map (SOM) and the k-means algorithm is developed for creating a set of waste generation type profiles. The approach is demonstrated using the extensive container-level waste weighting data collected in the metropolitan area of Helsinki, Finland. The results obtained highlight the potential of advanced data analytic approaches in producing more detailed waste generation information e.g. for the basis of tailored feedback services for waste producers and the planning and optimization of waste collection and recycling.
PubMed ID
29724480 View in PubMed
Less detail
Source
Can J Public Health. 1997 May-Jun;88(3):153
Publication Type
Article
Author
M. Szyszkowicz
Source
Can J Public Health. 1997 May-Jun;88(3):153
Language
English
Publication Type
Article
Keywords
Algorithms
Canada - epidemiology
Female
Humans
Life expectancy
Male
PubMed ID
9260352 View in PubMed
Less detail

Validation of case-finding algorithms derived from administrative data for identifying adults living with human immunodeficiency virus infection.

https://arctichealth.org/en/permalink/ahliterature133119
Source
PLoS One. 2011;6(6):e21748
Publication Type
Article
Date
2011
Author
Tony Antoniou
Brandon Zagorski
Mona R Loutfy
Carol Strike
Richard H Glazier
Author Affiliation
Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada. tantoniou@smh.toronto.on.ca
Source
PLoS One. 2011;6(6):e21748
Date
2011
Language
English
Publication Type
Article
Keywords
Algorithms
Canada
Databases, Factual
HIV Infections - diagnosis
Humans
Ontario
Abstract
We sought to validate a case-finding algorithm for human immunodeficiency virus (HIV) infection using administrative health databases in Ontario, Canada.
We constructed 48 case-finding algorithms using combinations of physician billing claims, hospital and emergency room separations and prescription drug claims. We determined the test characteristics of each algorithm over various time frames for identifying HIV infection, using data abstracted from the charts of 2,040 randomly selected patients receiving care at two medical practices in Toronto, Ontario as the reference standard.
With the exception of algorithms using only a single physician claim, the specificity of all algorithms exceeded 99%. An algorithm consisting of three physician claims over a three year period had a sensitivity and specificity of 96.2% (95% CI 95.2%-97.9%) and 99.6% (95% CI 99.1%-99.8%), respectively. Application of the algorithm to the province of Ontario identified 12,179 HIV-infected patients in care for the period spanning April 1, 2007 to March 31, 2009.
Case-finding algorithms generated from administrative data can accurately identify adults living with HIV. A relatively simple "3 claims in 3 years" definition can be used for assembling a population-based cohort and facilitating future research examining trends in health service use and outcomes among HIV-infected adults in Ontario.
Notes
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PubMed ID
21738786 View in PubMed
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["Slukh-3"--an expert system for the individual selection of hearing aids]

https://arctichealth.org/en/permalink/ahliterature8500
Source
Med Tekh. 1989 Mar-Apr;(2):42-7
Publication Type
Article
Author
A P Leliukh
V P Ovsianik
B S Moroz
A N Tsisarenko
E V Sokolova
Source
Med Tekh. 1989 Mar-Apr;(2):42-7
Language
Russian
Publication Type
Article
Keywords
Algorithms
English Abstract
Expert Systems
Hearing Aids
Humans
Minicomputers
Ukraine
Abstract
Herein is described the algorithm of an expert system intended for the individual choice of hearing aids, based on SM-4 computer. The audiometric data and hearing aids bank information allow to select for each patient the most preferable unit, regarded as suitable from the view of speech distinction. Moreover, with the help of this system it is possible to identify the most preferable way for manufacturing the audition prosthetic appliance (mono-or binaural) and to get recommendations for manufacturing prosthetic appliances for each ear individually; and for mono-aural prosthetic manufacturing--to identify the best version of the prosthesis for each ear individually. This system is most effective for the manufacture of audition prosthetic appliances for people with defective hearing.
PubMed ID
2747499 View in PubMed
Less detail

LR-Spring Mass model for cardiac surgical simulation.

https://arctichealth.org/en/permalink/ahliterature53250
Source
Stud Health Technol Inform. 2004;98:256-8
Publication Type
Article
Date
2004
Author
Jesper Mosegaard
Author Affiliation
Dept. of Computer Science, University of Aarhus, Denmark.
Source
Stud Health Technol Inform. 2004;98:256-8
Date
2004
Language
English
Publication Type
Article
Keywords
Algorithms
Denmark
Heart Defects, Congenital - surgery
Humans
Models, Anatomic
Thoracic Surgery
Abstract
The purpose of the research conducted was to develop a real-time surgical simulator for preoperative planning of surgery in congenital heart disease. The main problem simulating procedures on cardiac morphology is the need for a large degree of detail and simulation speed. In combination with a demand for physically realistic real-time behaviour this gives us tradeoffs not easily balanced. The LR-Spring Mass model handles these constraints by the use of domain specific knowledge.
PubMed ID
15544283 View in PubMed
Less detail

[Mathematical modeling of hypoxic states during myocardial ischemia]

https://arctichealth.org/en/permalink/ahliterature53289
Source
Fiziol Zh. 2004;50(3):47-54
Publication Type
Article
Date
2004
Author
Iu M Onopchuk
P V Biloshyts'kyi
N I Aralova
T A S'omchyk
Source
Fiziol Zh. 2004;50(3):47-54
Date
2004
Language
Ukrainian
Publication Type
Article
Keywords
Algorithms
Anoxia - etiology
English Abstract
Humans
Models, Cardiovascular
Myocardial Ischemia - complications
Abstract
The causes of development of ischemic heart failure (IHF) are various, its consequence is the non-adequate blood supply to the organs and tissues. A model of the functional respiratory system (FRS) is the most acceptable for the theoretical investigation of the hypoxical states of organism suffering from IHF. For remodeling and determining a degree of damage of coronary vessels, a four-chamber model of the heart was used with coronary vessels leading to each chamber.
PubMed ID
15320430 View in PubMed
Less detail

[Formalized method of deciding on treatment options in clinical oncology].

https://arctichealth.org/en/permalink/ahliterature187004
Source
Vopr Onkol. 2002;48(6):691-4
Publication Type
Article
Date
2002
Author
V N Chekhonadskii
A I Benevskii
M I Davydov
Author Affiliation
N.N. Blokhin Center for Oncology Research, Russian Academy of Medical Sciences, Moscow.
Source
Vopr Onkol. 2002;48(6):691-4
Date
2002
Language
Russian
Publication Type
Article
Keywords
Algorithms
Cost-Benefit Analysis
Decision Trees
Humans
Neoplasms - economics - therapy
Russia
Abstract
A method of constructing a "tree of problem solving" is suggested to work out viable and economical strategies of clinical therapy of tumors. The algorithm is illustrated by solving a hypothetical problem. A clinico-economic index is used to compare different modalities of tumor therapy, its lowest value representing the best regimen.
PubMed ID
12530265 View in PubMed
Less detail

Preliminary findings from a teleultrasound study in Alberta.

https://arctichealth.org/en/permalink/ahliterature203813
Source
Telemed J. 1998;4(3):267-76
Publication Type
Article
Date
1998
Author
M A Johnson
P. Davis
A J McEwan
G S Jhangri
R. Warshawski
A. Gargum
J. Ethier
W W Anderson
Author Affiliation
Department of Radiology & Diagnostic Imaging, University of Alberta Hospital, and Medical Imaging Consultants, Edmonton, Alberta, Canada.
Source
Telemed J. 1998;4(3):267-76
Date
1998
Language
English
Publication Type
Article
Keywords
Alberta
Algorithms
Humans
Prospective Studies
Telemedicine - organization & administration
Teleradiology
Ultrasonography - methods
Abstract
Ultrasound practice in Alberta requires direct supervision by an ultrasound-accredited specialist physician (sonologist). This requirement limits access to ultrasound examinations in many rural communities. A prospective study was performed to evaluate the adequacy of teleultrasound service in High Level, Alberta, with remote sonologist supervision from Edmonton, Alberta.
A total of 146 patients were evaluated in two groups. Group A (72 patients) was evaluated by both an on-site radiologist in High Level and a remote supervising radiologist in Edmonton. Group B (74 patients) was evaluated only by the remote supervising radiologist in Edmonton. The teleultrasound service included digital store-and-forward capabilities using a commercially available teleradiology system, with videoconferencing review for real-time scanning.
The teleultrasound service was helpful to the referring physician. It made transfer unnecessary in 42% of patients, and the results of the ultrasound assessment influenced management in 59% of patients. The sonographer on site and the remote radiologists agreed on the quality of the images. The information required for diagnosis was available from the sonographer's study in the majority of cases, with second-look scanning by the on-site radiologist or videoconferencing by the remote radiologist providing a major new diagnosis in only 1% of patients.
Teleultrasound service to High Level could be provided reliably with remote supervision, comparable to direct on-site supervision.
PubMed ID
9831751 View in PubMed
Less detail

1160 records – page 1 of 116.