Papers by Christopher Penney
Synthesis, 2009
PAPER, Synthesis 2009(2): 283-289 DOI: 10.1055/s-0028-1083290. © Georg Thieme Verlag Stuttgart ˙ ... more PAPER, Synthesis 2009(2): 283-289 DOI: 10.1055/s-0028-1083290. © Georg Thieme Verlag Stuttgart ˙ New York. A Method for the Selective Protection of Aromatic Amines in the Presence of Aliphatic Amines. Valérie Perron, Shaun ...
European Respiratory Journal, Sep 1, 2013
Number: 3223 Publication Number: P683 Abstract Group: 5.
The Journal of Rheumatology
The Journal of Rheumatology
Health reports / Statistics Canada, Canadian Centre for Health Information = Rapports sur la santé / Statistique Canada, Centre canadien d'information sur la santé
Little information has been published about the mortality of the Métis people of Canada. This stu... more Little information has been published about the mortality of the Métis people of Canada. This study describes mortality patterns among Métis and Registered Indian adults, compared with the non-Aboriginal population. The 1991 to 2001 Canadian census mortality followup study tracked mortality among a 15% sample of respondents aged 25 or older, including 11,800 Métis, 56,700 Registered Indians and 2,624,300 non-Aboriginal adults, all of whom were enumerated by the 1991 census long-form questionnaire. Age-specific and age-standardized mortality rates and period life tables based on the number of person-years at risk were calculated across the various groups. Métis were defined by ethnic origin (ancestry). Compared with non-Aboriginal members of the cohort, life expectancy at age 25 was 3.3 and 5.5 years shorter for Métis men and women, respectively, and 4.4 and 6.3 years shorter for Registered Indians. For both Aboriginal groups, mortality rate ratios were highest at younger ages. Morta...
This paper discusses results from a study conducted into the effects of SAR (Specific Absorption ... more This paper discusses results from a study conducted into the effects of SAR (Specific Absorption Rate) when comparing homogeneous and heterogeneous models against a dipole which was positioned from 10mm up to 200mm in distance form the centre of the dipole to the tissue boundary. Typical methodologies were employed [1, 2, 3] with regards the reference homogeneous simulation models which followed the accepted methodologies for defining reference SAR values used for experimental SAR system validation and calibration [1, 2]. Further studies utilized a heterogeneous model based on skin, fat and muscle. The purpose of the study was to investigate the possible effects of distance and model layering on SAR. The intent of the study was to establish if the accepted homogeneous model was conservative at the typical GSM band.
FDTD subgridding schemes with separated spatial and temporal subgrid interfaces were first implem... more FDTD subgridding schemes with separated spatial and temporal subgrid interfaces were first implemented in the framework of a commercial software. The accuracy of spatial and temporal interpolation and the stability due to material traverse of these FDTD subgridding schemes were then analyzed by carrying out a number of numerical experiments. It concludes that the imperfect constant time interpolation method majorly affects the accuracy of the results at the high frequency end. However, the accuracy of the subgridding schemes mostly depends on the spatial interpolation methods rather than the time interpolation methods. It is also demonstrated that the FDTD subgridding schemes are still stable even when there are objects which traverse the spatial and temporal interfaces. However, the errors due to the material traverse are significant and it is therefore not recommended to locate any important structures across the subgrid interfaces.
The Journal of Rheumatology
aboriginal policy studies, 2015
The CWB Index has been developed to investigate well-being at the community level using census su... more The CWB Index has been developed to investigate well-being at the community level using census subdivisions to define the different types of communities. Because the basis for analysis is the entire population of a community, the presence of non-Aboriginal populations living in First Nations or Inuit communities, or of Aboriginal people living in "other" (non-Aboriginal) communities, has not yet been considered. Therefore, to date, the differences in well-being between Aboriginal and non-Aboriginal residents of the same areas have not been investigated at the community level. In addition, few (if any) CSDs identified as First Nations or Inuit are located in urban areas. There is a need to understand better the well-being of this segment of Canada's population . Thus the purpose of the present study was to apply the CWB Index to describe the socioeconomic well-being of Aboriginal and non-Aboriginal residents of the same urban centers. For this purpose, we use the city of Winnipeg in Manitoba, Canada as a "case study" because of its large Aboriginal population.
Suicide is an area of great concern to Inuit in Canada, yet there are no national statistical dat... more Suicide is an area of great concern to Inuit in Canada, yet there are no national statistical data to highlight this issue. Using a geographical approach, we look at suicide rates in Inuit regions over a fifteen-year period from 1989 to 2003. We then analyse these data to compare suicide rates between groups of communities based on a variety of community level factors. Results indicate that suicide rates in these regions are over eleven times higher than the Canadian average throughout this period. Factors relating to social connections and networks appear to be associated with lower suicide rates.
Health reports, 2011
Aboriginal peoples experience a disproportionate burden of disease, compared with other Canadians... more Aboriginal peoples experience a disproportionate burden of disease, compared with other Canadians. However, relatively little information is available about mortality among Métis and non-Status Indians. This study calculates potential years of life lost before age 75 (PYLL) for people aged 25 to 74 by all-cause and cause-specific mortality, and examines the effect of socio-economic factors on premature mortality. Age-specific and age-standardized PYLL rates were calculated for 11,600 Métis, 5,400 non-Status Indians, and 2,475,700 non-Aboriginal adults based on the number of person-years at risk up to age 75. Métis and non-Status Indian adults had about twice the risk of dying before age 75, compared with non-Aboriginal adults. While the largest percentage of PYLL was due to non-communicable diseases such as cardiovascular disease and cancer, relative and absolute inequalities were greatest for injuries. Socioeconomic indicators such as income, education and employment explained a la...
2008 2nd International Conference on Bioinformatics and Biomedical Engineering, 2008
This paper presents the recent efforts to develop standards allowing numerical methods and techni... more This paper presents the recent efforts to develop standards allowing numerical methods and techniques for accurate and representative simulations of human exposure to RF energy in automotive environments. The focus of this work is to standardize numerical and modeling procedures that produce repeatable results based on simulations of the human body exposure to RF energy emitted by mobile radios with vehiclemount antennas. This activity is carried out in the framework of IEEE 1528.1 and IEEE 1528.2 standards development with the goal to provide a robust methodology for evaluating the compliance of vehicle-mount transmitters with respect to international exposure safety standards by means of numerical simulations.
Health reports, 2009
Little information has been published about the mortality of the Métis people of Canada. This stu... more Little information has been published about the mortality of the Métis people of Canada. This study describes mortality patterns among Métis and Registered Indian adults, compared with the non-Aboriginal population. The 1991 to 2001 Canadian census mortality followup study tracked mortality among a 15% sample of respondents aged 25 or older, including 11,800 Métis, 56,700 Registered Indians and 2,624,300 non-Aboriginal adults, all of whom were enumerated by the 1991 census long-form questionnaire. Age-specific and age-standardized mortality rates and period life tables based on the number of person-years at risk were calculated across the various groups. Métis were defined by ethnic origin (ancestry). Compared with non-Aboriginal members of the cohort, life expectancy at age 25 was 3.3 and 5.5 years shorter for Métis men and women, respectively, and 4.4 and 6.3 years shorter for Registered Indians. For both Aboriginal groups, mortality rate ratios were highest at younger ages. Morta...
2009 IEEE MTT-S International Microwave Symposium Digest, 2009
Abstract A combined transient simulation of a 300 MHz input, 20 MHz output RF radio transceiver s... more Abstract A combined transient simulation of a 300 MHz input, 20 MHz output RF radio transceiver system was performed using an industry standard FDTD simulator integrated with an open source state-variable based multi-physics simulator. The two simulators ...
World Conference on the WWW and Internet, 1997
ChemInform, 2011
ABSTRACT A general reaction for the synthesis of target compounds (II) is developed through acid-... more ABSTRACT A general reaction for the synthesis of target compounds (II) is developed through acid-mediated cyclization of arylaminotriazines (I).
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Papers by Christopher Penney