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      • Behavioral telemonitoring of the elderly at home: Persistent Actimetric Information from location data in Health Smart Homes

        Y.Fouquet,C. Franco,N.Vuillerme,J.Demongeot 동국대학교 정보융합기술원 2009 International Journal of Assistive Robotics and Sy Vol.10 No.4

        Supporting ageing in place and staying at home, delaying institutionalization, lightening the caregivers' burden, improving the elderly quality of life are as many expectations that tele-healthcare aims at coming up to. This paper discuss the ability to obtain a reliable pervasive information system at home from a network of localizing sensors allowing to follow the different locations at which a dependent (elderly or handicapped) person can be detected. It proposes a method for telemonitoring to detect abnormal changes in behavior which may lead to an early entrance in dependency. The tendency to perseverate is measured by a parameter of persistence in a task. The data recorded can be treated as the sequence of color coding numbers of balls (symbolizing activity-stations) taken in a Polya's urn, in which the persistence of the presence in an activity-station is taken into account by adding a number of balls of the same color as the ball just drawn. This method is illustrated through a longitudinal study of the successive locations of an elderly woman within her own flat. In this preliminary work, the records were captured by passive infrared sensors placed in each room allowing only the detection of elementary activities of daily living. The method was tested by varying the timebox width of the study (i.e. the duration of the watched activities) and in a second time by distinguishing the day of the week. In both cases, it provides interesting insights into the behavior and the daily routine of the watched person as well as deviations from this routine. We discuss the relevance of such a procedure to detect early sudden or chronic changes in the parameters values of the random process made of the succession of ball numbers and we use it to trigger alarms (in order to alert the care givers) and diagnosis the person's health and autonomy (in order to keep the person at home as long as possible but to see as soon as possible the degradation of the person's health).

      • Design for Six Sigma and Lean Product Development : Differences, Similarities and Links

        MSC, Jean-Baptiste Fouquet,Gremyr, Ida The Korean Society for Quality Management 2007 The Asian Journal on Quality Vol.8 No.3

        Many practitioners strive to increase the efficiency of their product development. In addition, smaller companies must satisfy customers' expectations of their product development. These expectations can be e.g. use of specific methodologies such as Lean Product Development (LPD) and/or Design for Six Sigma (DFSS). This study attempts to identify differences and similarities between these methodologies and the connection between them. This comparison is of interest to practitioners that must choose a strategy for their product development as well as to researchers. The aim of both methodologies is to reduce waste and time of development and to raise the quality of a product at the very roots of the product: its development. LPD and DFSS help development managers to structure projects and focus as much as possible on customer expectations and satisfaction.

      • KCI등재

        Unusual Applications of Kendrick Plots: Recalibration and Tolerance

        Thierry N. J. Fouquet,Orlando Cabarcos 사단법인 한국질량분석학회 2023 Mass spectrometry letters Vol.14 No.4

        Kendrick plots offer an alternative visualization of mass spectral data which reveals ion series and patterning by turn- ing a mass spectrum into a map, plotting the fractional mass (wrongly called mass defect) as a function of mass-to-charge ratios and ion abundances. Although routinely used for polymer mass spectrometry, two unreported applications of these Kendrick plots are proposed using the program “kendo2”: the graphical recalibration of a mass spectrum via the simulation of a theoretical fractional mass and a multi-segment fit; and the rapid evaluation of scan-to-scan variation of accurate mass measurements used as tolerances for the blank subtraction of UPLC-MS data files. Both applications are compatible with any type of high-resolution MS data including LC/GC-MS(/MS).

      • Behavioral telemonitoring of the elderly at home

        Y,Fouquet,C,Franco,N,Vuillerme,J,Demongeot 동국대학교 정보융합기술원 2009 International Journal of Assistive Robotics and Sy Vol.10 No.4

        Supporting ageing in place and staying at home, delaying institutionalization, lightening the caregivers' burden, improving the elderly quality of life are as many expectations that tele-healthcare aims at coming up to. This paper discuss the ability to obtain a reliable pervasive information system at home from a network of localizing sensors allowing to follow the different locations at which a dependent (elderly or handicapped) person can be detected. It proposes a method for telemonitoring to detect abnormal changes in behavior which may lead to an early entrance in dependency. The tendency to perseverate is measured by a parameter of persistence in a task. The data recorded can be treated as the sequence of color coding numbers of balls (symbolizing activity-stations) taken in a Polya's urn, in which the persistence of the presence in an activity-station is taken into account by adding a number of balls of the same color as the ball just drawn. This method is illustrated through a longitudinal study of the successive locations of an elderly woman within her own flat. In this preliminary work, the records were captured by passive infrared sensors placed in each room allowing only the detection of elementary activities of daily living. The method was tested by varying the timebox width of the study (i.e. the duration of the watched activities) and in a second time by distinguishing the day of the week. In both cases, it provides interesting insights into the behavior and the daily routine of the watched person as well as deviations from this routine. We discuss the relevance of such a procedure to detect early sudden or chronic changes in the parameters values of the random process made of the succession of ball numbers and we use it to trigger alarms (in order to alert the care givers) and diagnosis the person's health and autonomy (in order to keep the person at home as long as possible but to see as soon as possible the degradation of the person's health).

      • KCI등재후보

        Accurate stoichiometric analysis of polycrystalline indium nitride films with elastic recoil detection

        Santosh K. Shrestha,M. Wintrebert-Fouquet,H. Timmers,Scott Butcher 한국물리학회 2004 Current Applied Physics Vol.4 No.2-4

        Indium nitride thin lms for potential application in high power, high frequency devices have been grown with reactive ionsputtering. Accurate lm stoichiometries have been measured with elastic recoil detection using 200 MeV Au projectile ions. Thebeam-induced depletion of nitrogen during analysis has been found to be severe and non-linear with ion uence. Assuming theformation of molecular nitrogen as the decisive step leading to nitrogen loss, a model has been applied which reproduces the ex-perimental data. The model allows accurate extrapolations of the original nitrogen content of the material. All lms studied havebeen found to be nitrogen-rich and have large band gaps ranging from 2.14 to 2.3 eV. The amount of excess nitrogen correlates withthe band gap energy suggesting a MossBurstein eect. The excess nitrogen may thus act as donor and account for the high chargecarrier concentrations of up to 2· 1020 cm. 3. The magnitude of the nitrogen excess is consistent with a donor level 50 meV below theconduction band.

      • KCI등재
      • SCOPUSKCI등재

        Multiple Exposures and Coexposures to Occupational Hazards Among Agricultural Workers: A Systematic Review of Observational Studies

        Nguyen, Thi-Hai-Yen,Bertin, Melanie,Bodin, Julie,Fouquet, Natacha,Bonvallot, Nathalie,Roquelaure, Yves Occupational Safety and Health Research Institute 2018 Safety and health at work Vol.9 No.3

        Background: Workers may be exposed to various types of occupational hazards at the same time, potentially increasing the risk of adverse health outcomes. The aim of this review was to analyze the effects of multiple occupational exposures and coexposures to chemical, biomechanical, and physical hazards on adverse health outcomes among agricultural workers. Methods: Articles published in English between 1990 and 2015 were identified using five popular databases and two complementary sources. The quality of the included publications was assessed using the methodology developed by the Effective Public Health Practice Project assessment tool for quantitative studies. Results: Fifteen articles were included in the review. Multiple chemical exposures were significantly associated with an increased risk of respiratory diseases, cancer, and DNA and cytogenetic damage. Multiple physical exposures seemed to increase the risk of hearing loss, whereas coexposures to physical and biomechanical hazards were associated with an increased risk of musculoskeletal disorders among agricultural workers. Conclusion: Few studies have explored the impact of multiple occupational exposures on the health of agricultural workers. A very limited number of studies have investigated the effect of coexposures among biomechanical, physical, and chemical hazards on occupational health, which indicates a need for further research in this area.

      • KCI등재

        Multiple Exposures and Coexposures to Occupational Hazards Among Agricultural Workers: A Systematic Review of Observational Studies

        Thi-Hai-Yen Nguyen,Mélanie Bertin,Julie Bodin,Natacha Fouquet,Nathalie Bonvallot,Yves Roquelaure 한국산업안전보건공단 산업안전보건연구원 2018 Safety and health at work Vol.9 No.3

        Background: Workers may be exposed to various types of occupational hazards at the same time, potentially increasing the risk of adverse health outcomes. The aim of this review was to analyze the effects of multiple occupational exposures and coexposures to chemical, biomechanical, and physical hazards on adverse health outcomes among agricultural workers. Methods: Articles published in English between 1990 and 2015 were identified using five popular databases and two complementary sources. The quality of the included publications was assessed using the methodology developed by the Effective Public Health Practice Project assessment tool for quantitative studies. Results: Fifteen articles were included in the review. Multiple chemical exposures were significantly associated with an increased risk of respiratory diseases, cancer, and DNA and cytogenetic damage. Multiple physical exposures seemed to increase the risk of hearing loss, whereas coexposures to physical and biomechanical hazards were associated with an increased risk of musculoskeletal disorders among agricultural workers. Conclusion: Few studies have explored the impact of multiple occupational exposures on the health of agricultural workers. A very limited number of studies have investigated the effect of coexposures among biomechanical, physical, and chemical hazards on occupational health, which indicates a need for further research in this area.

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