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  1. Article: A survey of structured cell population dynamics.

    Arino, O

    Acta biotheoretica

    1995  Volume 43, Issue 1-2, Page(s) 3–25

    Abstract: A survey of three types of cell population models is presented in this paper. The main issue in all the surveyed works is whether or not there exists a stable type distribution (s.t.d.). In the last few years, many efforts were directed towards ... ...

    Abstract A survey of three types of cell population models is presented in this paper. The main issue in all the surveyed works is whether or not there exists a stable type distribution (s.t.d.). In the last few years, many efforts were directed towards describing the most general models which still exhibit s.t.d. Progress made in the case of size density models are discussed. A slightly extended version of a time continous daughter cell model, studied in Arino et al. (1991), is presented. Recently, some authors have undertaken the task of comparing models of various origins and types. Such works are alluded to in a discussion.
    MeSH term(s) Cell Count ; Cell Cycle ; Cell Division ; Cell Physiological Phenomena ; Models, Biological
    Language English
    Publishing date 1995-06
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 63-2
    ISSN 1572-8358 ; 0001-5342
    ISSN (online) 1572-8358
    ISSN 0001-5342
    DOI 10.1007/bf00709430
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  2. Article ; Conference proceedings ; Online: The Contribution of GOFC-GOLD to Land Cover and Land Use Monitoring

    Mora, B. / Herold, M. / Seifert, Frank Martin / Arino, O.

    Achievements and Current Challenges

    2016  

    Keywords Life Science
    Language English
    Publishing country nl
    Document type Article ; Conference proceedings ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Global land cover mapping

    Mora, B. / Tsendbazar, N. / Herold, M. / Arino, O.

    Land Use and Land Cover Mapping in Europe ; Remote Sensing and Digital Image Processing

    Current status and future trends

    2014  

    Publishing country de
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Characteristics and Circumstances of Falls in the Community-Dwelling Older Adult Population.

    Molés Julio, María Pilar / Lavedán Santamaría, Ana / Botigué Satorra, Teresa / Masot Ariño, Olga / Esteve Clavero, Aurora / Maciá Soler, María Loreto

    Journal of primary care & community health

    2020  Volume 11, Page(s) 2150132720940508

    Abstract: Objective: ...

    Abstract Objective:
    MeSH term(s) Aged ; Cross-Sectional Studies ; Humans ; Independent Living ; Prevalence ; Risk Factors ; Surveys and Questionnaires
    Language English
    Publishing date 2020-07-07
    Publishing country United States
    Document type Journal Article ; Observational Study ; Research Support, Non-U.S. Gov't
    ZDB-ID 2550221-9
    ISSN 2150-1327 ; 2150-1319
    ISSN (online) 2150-1327
    ISSN 2150-1319
    DOI 10.1177/2150132720940508
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  5. Article ; Online: Global land cover mapping

    Mora, B. / Tsendbazar, N.E. / Herold, M. / Arino, O.

    Land Use and Land Cover Mapping in Europe: Practices and Trends ; ISBN: 9789400779686

    current status and future trends

    2014  

    Abstract: The observation of global-scale land cover (LC) is of importance to international initiatives such as the United Nations Framework Convention on Climate Change (UNFCCC) and Kyoto protocol, governments, and scientific communities in their understanding ... ...

    Abstract The observation of global-scale land cover (LC) is of importance to international initiatives such as the United Nations Framework Convention on Climate Change (UNFCCC) and Kyoto protocol, governments, and scientific communities in their understanding and monitoring of the changes affecting the environment, and the coordination of actions to mitigate and adapt to global change. As such, reliable and consistent global LC (GLC) datasets are being sought. For instance, GLC datasets are used as an input for many Global Circulation Models, Earth Systems Models and Integrated Assessment Models used for global and regional climate simulations, dynamic vegetation modelling, carbon (stock) modelling, ecosystem modelling, land surface modelling, and impact assessments (Hibbard et al., 2010; Herold et al., 2011).
    Keywords Life Science
    Language English
    Publisher Springer
    Publishing country nl
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Conference proceedings ; Online: Using time-series approaches for large area land cover monitoring

    Eberenz, J. / Verbesselt, J. / Herold, M. / Arino, O. / Defourny, P. / Desclee, Baudouin

    2016  

    Keywords Life Science
    Language English
    Publishing country nl
    Document type Article ; Conference proceedings ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article: Mathematical modelling of the intravenous glucose tolerance test.

    De Gaetano, A / Arino, O

    Journal of mathematical biology

    2000  Volume 40, Issue 2, Page(s) 136–168

    Abstract: Several attempts at building a satisfactory model of the glucose-insulin system are recorded in the literature. The minimal model, which is the model currently mostly used in physiological research on the metabolism of glucose, was proposed in the early ... ...

    Abstract Several attempts at building a satisfactory model of the glucose-insulin system are recorded in the literature. The minimal model, which is the model currently mostly used in physiological research on the metabolism of glucose, was proposed in the early eighties for the interpretation of the glucose and insulin plasma concentrations following the intravenous glucose tolerance test. It is composed of two parts: the first consists of two differential equations and describes the glucose plasma concentration time-course treating insulin plasma concentration as a known forcing function; the second consists of a single equation and describes the time course of plasma insulin concentration treating glucose plasma concentration as a known forcing function. The two parts are to be separately estimated on the available data. In order to study glucose-insulin homeostasis as a single dynamical system, a unified model would be desirable. To this end, the simple coupling of the original two parts of the minimal model is not appropriate, since it can be shown that, for commonly observed combinations of parameter values, the coupled model would not admit an equilibrium and the concentration of active insulin in the "distant" compartment would be predicted to increase without bounds. For comparison, a simple delay-differential model is introduced, is demonstrated to be globally asymptotically stable around a unique equilibrium point corresponding to the pre-bolus conditions, and is shown to have positive and bounded solutions for all times. The results of fitting the delay-differential model to experimental data from ten healthy volunteers are also shown. It is concluded that a global unified model is both theoretically desirable and practically usable, and that any such model ought to undergo formal analysis to establish its appropriateness and to exclude conflicts with accepted physiological notions.
    MeSH term(s) Adult ; Blood Glucose/analysis ; Female ; Glucose/metabolism ; Glucose Tolerance Test/statistics & numerical data ; Humans ; Insulin/blood ; Male ; Middle Aged ; Models, Biological
    Chemical Substances Blood Glucose ; Insulin ; Glucose (IY9XDZ35W2)
    Language English
    Publishing date 2000-02
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 187101-8
    ISSN 1432-1416 ; 0303-6812
    ISSN (online) 1432-1416
    ISSN 0303-6812
    DOI 10.1007/s002850050007
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  8. Article: Use of ATSR and SAR measurements for the monitoring and characterisation of night-time gas flaring from off-shore platforms: The North Sea test case

    Casadio, S / Arino, O / Minchella, A

    Remote sensing of environment. 2012 Aug., v. 123

    2012  

    Abstract: A method for the monitoring of night-time gas flaring of off-shore oil/gas extraction platforms using measurements of the Along Track Scanning Radiometer (ATSR) and the Synthetic Aperture Radar (SAR) is presented and discussed in detail. The positions of ...

    Abstract A method for the monitoring of night-time gas flaring of off-shore oil/gas extraction platforms using measurements of the Along Track Scanning Radiometer (ATSR) and the Synthetic Aperture Radar (SAR) is presented and discussed in detail. The positions of off-shore extraction sites are accurately estimated by using SAR data, while the flaring activity is estimated from night-time shortwave infrared (SWIR) radiance measured by ATSR. The North Sea area has been selected as test case and related flaring activity from 1991 to 2010 has been analysed at single site and at North Sea area scales. Results indicate a decline in the overall flaring activity during the time period considered in this work, although single sites can show positive flaring trends. The ATSR derived flaring time series has been compared to the crude oil production data provided by the US Energy Information Administration (EIA), showing very good agreement in terms of trend and seasonal behaviour. We present a simple inversion scheme aimed at the evaluation of the flame parameters (temperature and size) from night-time shortwave, middle and thermal infrared ATSR measurements, and results are discussed in detail. Finally, the possibility to estimate flaring efficiency from satellite measurements and from detailed technical information on flaring devices is envisaged. The proposed approach can be easily extended to other areas in which gas flaring from off-shore oil and gas extraction are an important economic and environmental factor.
    Keywords monitoring ; oils ; petroleum ; remote sensing ; synthetic aperture radar ; temperature ; time series analysis ; North Sea
    Language English
    Dates of publication 2012-08
    Size p. 175-186.
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 431483-9
    ISSN 0034-4257
    ISSN 0034-4257
    DOI 10.1016/j.rse.2012.03.021
    Database NAL-Catalogue (AGRICOLA)

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  9. Article: Global night-time fire season timing and fire count trends using the ATSR instrument series

    Arino, Olivier / Casadio, Stefano / Serpe, Danilo

    Remote sensing of environment. 2012 Jan. 15, v. 116

    2012  

    Abstract: Global night-time fire counts for the years from 1995 to 2009 have been obtained by using the latest version of Along Track Scanning Radiometer Top of Atmosphere radiance products (level 1B), and related trends have been estimated. Possible biases due to ...

    Abstract Global night-time fire counts for the years from 1995 to 2009 have been obtained by using the latest version of Along Track Scanning Radiometer Top of Atmosphere radiance products (level 1B), and related trends have been estimated. Possible biases due to cloud coverage variations have been assumed to be negligible. The sampling number (acquisition frequency) has also been analysed in detail and proved not to influence our results. The new ATSR World Fire Atlas (WFA) product continuity has been tested by comparing the partially overlapping fire counts time series from the ATSR-2 (on board ERS-2) and the AATSR (on board ENVISAT) missions which showed negligible offsets. The ATSR-WFA products show very good correlation with the TRMM-VIRS and MODIS-Aqua/Terra monthly night-time fire counts. Global night-time fire trends have been evaluated by inspecting the time series of hot spots aggregated a) at 2°×2° scale; b) at district/country/region/continent scales, and c) globally. The statistical significance of the estimated trend parameters has been verified by means of the Mann–Kendall test. Results indicate that no trends in the absolute number of fire counts can be identified at the global scale, that there has been no appreciable shift in the fire season during the last 14years, and that statistically significant positive and negative trends are only found when data are aggregated at smaller scales.
    Keywords fire season ; remote sensing ; time series analysis
    Language English
    Dates of publication 2012-0115
    Size p. 226-238.
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 431483-9
    ISSN 0034-4257
    ISSN 0034-4257
    DOI 10.1016/j.rse.2011.05.025
    Database NAL-Catalogue (AGRICOLA)

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  10. Article: A model with 'growth retardation' for the kinetic heterogeneity of tumour cell populations.

    Arino, O / Bertuzzi, A / Gandolfi, A / Sánchez, E / Sinisgalli, C

    Mathematical biosciences

    2007  Volume 206, Issue 2, Page(s) 185–199

    Abstract: In the present paper we propose a continuous cell population model based on Shackney's idea of growth retardation. Cells are characterized by two state variables: the cell maturity x, 0 < or = x < or = 1, and a state variable T that identifies the rate ... ...

    Abstract In the present paper we propose a continuous cell population model based on Shackney's idea of growth retardation. Cells are characterized by two state variables: the cell maturity x, 0 < or = x < or = 1, and a state variable T that identifies the rate of maturation along cell cycle. During their life span, cells can change T at random by jump transitions to T values corresponding to slower maturation rates, while at each jump the maturity x is conserved. Both the time evolution of the population and the exponential stationary solution are numerically computed. The distribution of the cell cycle transit time in asynchronous exponential growth is investigated by Monte Carlo simulation. An approximated formula for the distribution of cell cycle time is also provided.
    MeSH term(s) Algorithms ; Animals ; Cell Count ; Cell Cycle ; Cell Proliferation ; Humans ; Kinetics ; Models, Biological ; Monte Carlo Method ; Neoplasms/pathology ; Neoplasms/physiopathology ; Probability
    Language English
    Publishing date 2007-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1126-5
    ISSN 1879-3134 ; 0025-5564
    ISSN (online) 1879-3134
    ISSN 0025-5564
    DOI 10.1016/j.mbs.2005.04.008
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