Effect of Temperature on Frost-Free Days and Length of Crop Growing Season across Southern Ontario

Climate change has an impact on various climatic variables. In this study our focus is mainly on temperature characteristics of climate parameter. In temperate and humid regions like southern Ontario, the effect of climate change on Frost-free days in winter is distinctive. The average annual temperature is going upward but the extreme increase is in the winter temperature. Winter average temperature is going up by about 2˚C. However, extreme daily minimum temperature is going up by more than 3˚C. This climate effect has a great impact on the nature of precipitation and length of frost-free days. The snowfall over winter months is decreasing and the rainfall is increasing. However, the number of frost-free days during late fall months, early winter months, late winter months and early spring months are increasing. This result reveals an increase in length of the growing season. This research focuses on the effect of change in climatic variables on Frost-free days in Southern Ontario. Therefore, special attention should be given to the effect of change in climate Frost-free conditions on length of crop growing in winter season for potential investigation.

Bone Mineral Density Reporting Underestimates Fracture Risk in Ontario

Objective: Analysis of clinical documents such as bone mineral density (BMD) reports is an important component of program evaluation because it can provide insights into the accuracy of assessment of fracture risk communicated to patients and practitioners. Our objective was to compare fracture risk calculations from BMD test reports to those based on the 2010 Canadian guidelines. Methods: We retrieved BMD reports from fragility fracture patients screened through a community hospital fracture clinic participating in Ontario’s Fracture Clinic Screening Program. Fracture risk was determined according to the 2010 Canadian guidelines using age, sex, and T-score at the femoral neck, in addition to three clinical factors. Three researchers classified patients’ fracture risk until consensus was achieved. Results: We retrieved reports for 17 patients from nine different BMD clinics in the Greater Toronto Area. Each patient had a different primary care physician and all BMD tests were conducted after the 2010 Canadian guidelines were published. The fracture risk of 10 patients was misclassified with 9 of the 10 reports underestimating fracture risk. Nine reports acknowledged that the prevalence of a fragility fracture raised the risk category by one level but only four of these reports acknowledged that the patient had, or may have sustained, a fragility fracture. When we raised fracture risk by one level according to these reports, eight patients were still misclassified. Fracture risk in the majority of these patients remained underestimated. Inconsistent classification was found in the majority of cases where reports came from the same clinic. Four reports described risk levels for two different types of risk. Conclusions: More than half of patients received BMD reports which underestimated fracture risk. Bone health management recommendations based on falsely low fracture risk are likely to be sub-optimal.

Possible Impacts of Climate Change on Daily Streamflow and Extremes at Local Scale in Ontario, Canada. Part II: Future Projection

The paper forms the second part of an introduction to possible impacts of climate change on daily streamflow and extremes in the Province of Ontario, Canada. Daily streamflow simulation models developed in the companion paper (Part I) were used to project changes in frequency of future daily streamflow events. To achieve this goal, future climate information (including rainfall) at a local scale is needed. A regression-based downscaling method was employed to downscale eight global climate model (GCM) simulations (scenarios A2 and B1) to selected weather stations for various meteorological variables (except rainfall). Future daily rainfall quantities were projected using daily rainfall simulation models with downscaled future climate information. Following these projections, future daily streamflow volumes can be projected by applying daily streamflow simulation models. The frequency of future daily high-streamflow events in the warm season (May–November) was projected to increase by about 45%-55% late this century from the current condition, on average of eight-GCM A2 projections and four selected river basins. The corresponding increases for future daily low-streamflow events and future daily mean streamflow volume could be about 25%-90% and 10%-20%, respectively. In addition, the return values of annual one-day maximum streamflow volume for various return periods were projected to increase by 20%-40%, 20%-50%, and 30%-80%, respectively for the periods 2001-50, 2026-75, and 2051-2100. Inter-GCM and interscenario uncertainties of future streamflow projections were quantitatively assessed. On average, the projected percentage increases in frequency of future daily high-streamflow events are about 1.4-2.2 times greater than inter-GCM and interscenario uncertainties.

A Compilation of the Geo-Mechanical Properties of Rocks in Southern Ontario and the Neighbouring Regions

The available measurements of the geo-mechanical properties of rocks in Southern Ontario and the neighbouring regions (New York, Ohio, Michigan, Indiana, Illinois, Wisconsin, and Minnesota) are summarized and presented. These measurements were compiled from available published data in the relevant literature and also from data that were collected from major underground projects in these regions. The compiled data are presented in three categories: measured in-situ stresses in different rock formations;calculated strength, stiffness and deformation including time-dependent deformation properties;and the measured dynamic properties of intact rock specimens from different rock formations in Southern Ontario and the neighbouring regions. The data presented in this paper can be used as a resource for preliminary evaluation of the geomechanical properties of the rocks in these regions. The presented geo-mechanical properties were generally obtained from in-situ measurements and from laboratory tests that were conducted on intact rock specimens from freshly excavated rock samples. Moreover, the time-dependent deformation properties of rocks in these regions were obtained from laboratory tests that were performed on intact rock specimens submerged in water. However, the influence of drilling fluids such as bentonite slurry and synthetic polymers solution, on the geo-mechanical properties of rocks is not evident and needs to be investigated.

Possible Impacts of Climate Change on Daily Streamflow and Extremes at Local Scale in Ontario, Canada. Part I: Historical Simulation

The paper forms the first part of an introduction to possible impacts of climate change on daily streamflow and extremes in the Province of Ontario, Canada. In this study, both conceptual and statistical streamflow simulation modeling theories were collectively applied to simulate daily streamflow volumes. Based on conceptual rainfall-runoff modeling principle, the predictors were selected to take into account several physical factors that affect streamflow, such as (1) current and previous quantities of rainfall over the watershed, (2) an index of pre-storm moisture conditions, (3) an index of pre-storm evapotranspiration capacities, and (4) a seasonal factor representing seasonal variation of streamflow volume. These rainfall-runoff conceptual factors were applied to an autocorrelation correction regression procedure to develop a daily streamflow simulation model for each of the four selected river basins. The streamflow simulation models were validated using a leave-one-year-out cross-validation scheme. The simulation models identified that the explanatory predictors are consistent with the physical processes typically associated with high-streamflow events. Daily streamflow simulation models show that there are significant correlations between daily streamflow observations and model validations, with model R2s of 0.68-0.71, 0.61-0.62, 0.71-0.74, and 0.95 for Grand, Humber, Upper Thames, and Rideau River Basins, respectively. The major reason for the model performance varying across the basins might be that rainfall-runoff response time and physical characteristics differ significantly among the selected river basins. The results suggest that streamflow simulation models can be used to assess possible impacts of climate change on daily streamflow and extremes at a local scale, which is major objective of a companion paper (Part II).

The reporting of the influenza pandemic, 1918-1920 in Hamilton, Ontario

The paper evaluates the ways in which Hamilton, Ontario’s three daily newspapers covered the influenza epidemic, 1918-1920. In Hamilton, the central aspect of influenza coverage was Dr. Roberts’ decision to close all public meeting places twice during 1918. No other story but those connected to a public meeting ban could sustain interest. Thus, the story for the press was to be the ban: whether to ban, what to ban, to lift or not, to reimpose. The story monopolized influenza coverage to such an extent that traditional threads, such as morbidity and mortality and personal interest stories, received little attention. The ban, because it restricted personal freedoms and involved local politics and commerce, received extensive coverage. In the absence of a ban, the influenza story could fade out of the press even during some of the most virulent periods of the epidemic. The paper finds that influenza was not transformative in Hamilton and in fact, demonstrated the viability of traditional charitable responses to disease. The actions carried out by Hamilton’s Board of Health cannot be considered “modern” as its methods were more akin to the nineteenth century than those of the later bacteriological age.

Hydro-Geophysical Investigation of Contaminant Distribution at a Closed Landfill in Southwestern Ontario, Canada

This paper presents a hydro-geophysical investigation into the landfill leachate distribution and subsurface geology at a closed site in southwestern Ontario, Canada, using geophysical mapping and hydrological modeling approaches. Conductivity mapping was first conducted over the study site using a frequency-domain EM terrain conductivity meter, revealing an anomalous high-con- ductivity zone of about 200 m (S-N) × 80 m (W-E) at the western half of the site. The DC resistivity survey was then carried out at this anomalous zone with eight S-N profiles and three W-E profiles measuring 200m in length using a Wenner-α configuration. Our resistivity survey results indicate that the landfill leachate travels mainly south-east wards over the upper aquifer, with a minor vertical component into the upper weathered portion of the silt/sand aquitard at some locations. No contamination seems to exist in the lower sand aquifer. The geophysical results were later used to develop two conceptualized models for hydrological modeling. Our numerical results predict the leachate distribution at the study site in the future, confirming that the contaminant will occupy the entire upper aquifer and the most of the aquitard in a time of 1000 years, and that the barrier of the aquitard will protect the lower sand aquifer from the leachate pollution. These findings are critical in evaluating the current leachate conditions and the existing compliance monitoring plan for potential implementation at this study site and other sites in elsewhere.

Investigation of Long-Term Climate and Streamflow Patterns in Ontario

To develop mitigation and adaptation strategies for undesired consequences of climate change, it is important to understand the changing hydrological and climatological trends in the past few decades. Although the changing climate is a cause of concern for the entire planet, its effects can vary significantly on a regional scale. Canada has experienced a rapid rise in the annual mean surface air temperature in the past decades. The current study aims to investigate trends in monthly mean precipitation, rainfall, snowfall, maximum and minimum temperature, as well as baseflow, surface runoff, and total streamflow values for the province of Ontario, Canada. To the best of the author’s knowledge, a similar study involving rural and urban watersheds, that quantifies the impact of changing climate on temperature and other hydrological processes over a period ranging from 1968 to 2017, has not yet been conducted for Ontario. Man-Kendall trend test was used to analyze trends in the above mentioned climatic and hydrometric parameters for rural and urban watersheds situated in the northern and southern parts of Ontario. The results of this study indicate that the mean monthly minimum temperatures for rural watersheds situated in southern Ontario have increased significantly for the winter and summer months, which may have caused an increase in snowmelt and consequently the streamflow for the winter months in the region. Unlike the watersheds in southern Ontario, the northern watersheds witnessed relatively fewer instances of significant changes in mean monthly temperatures, and in some cases, declining rates have been noted. Similarly, only a few watersheds in the north saw a substantial drop in baseflow over the summer months. For nearly all the months, the average monthly minimum and maximum temperatures were found to increase for urban watersheds. The streamflow, baseflow, and surface runoff increased, likely due to rapid urbanization, resulting in a lower infiltration rate. These results will contribute towards the decision-making processes and development of alternate water management policies within the province, taking into account the regional variations in climate change’s impact on the hydrology of Ontario’s watersheds.

Mêmes origines,un récit national différent——La conscience historique des francophones en Ontario et au Quebec

Pendant longtemps,les Canadiens francais,partout au pays,se sont définis comme une communauté de mémoire,d’histoire,de culture,voire meme de destin.Or,à partir des années 1960,d’importantes transformations socioéconomiques amènent les francophones à adopter davantage des identités provinciales.De nombreux sociologues et historiens en ont conclu à la disparition d’une mémoire commune à tous les Canadiens francais.Notre équipe de recherche a visité treize écoles de langue francaise dans les provinces du Québec et de l’Ontario en 2016 pour demander à plus de 600 étudiants de rédiger un texte sur l’histoire des francophones au pays afin de sonder leurs représentations du passé.Il ressort de cette étude que la plupart des étudiants partagent une vision commune de leur passé fondée sur l’attachement à leurs origines francaises,les luttes pour la survie du fait francais en Amérique,ainsi qu’un sens de fragilité et d’inachèvement à l’égard de l’avenir de leur culture.

The Prediction of Engel's Coefficient and Education Expenditure Based on the Linear Regression Model for Heilongjiang and Ontario

It is meaningful to study trends in food and education expenditure as proportions of total household expenditure.In this study,based on year 2006 to 2017 data from Heilongjiang province in China and Ontario province in Canada,a linear regression model is used to forecast the Engel’s coefficients(proportion spent on food)and the education proportion from year 2018 to 2027 for those two regions.The results suggest that in both regions the Engel’s coefficients show a decreasing trend,while the education expenditure proportions show an increasing trend.The ratios of education expenditure to food expenditure in both places show an increasing trend.

加拿大Ontario省木材采运劳动事故频率

加拿大Ｏｎｔａｒｉｏ省木材采运劳动事故频率Ｏｎｔａｒｉｏ省是加拿大木材主要产区之一。根据有关部门对该省１９８８～１９９２年的木材采运劳动事故的统计分析表明，每年投入木材采运的劳动工时基本上呈减少趋势，劳动事故频率也呈下降趋势。其中，１９８８年投入木材...

Substrate selection and seasonal variation in abundance and size composition of isopod Lirceus fontinalis in Ontario streams, Canada

The abundance and size composition of stream isopods Lirceus fontinalis were investigated from April 2001 to August 2002 in 3 streams in southern Ontario, Canada. Effects of current speed was released from the analysis by choosing slow flowing water. The effects of substrate, season and water depth on the abundance, distribution and size composition of the isopods were analyzed. It was found that substrate and season influence isopods the most. The rocky substrate with attached filamentous macro-algae contains an isopod abundance 7.05 times that of bare rock substrate and 14.6 times that of fine-sand and mud substrate. There was a large variation with respect to seasonality in both abundance and size composition of the isopods, with the highest abundance occurring in summer and the lowest in winter and spring; individual isopods also tend to be larger in the winter and spring. In all substrates, shallow areas tend to support higher densities of isopods than deeper areas.

针刀松解联合Mulligan手法治疗中期膝骨关节炎临床观察

目的:观察针刀松解联合Mulligan手法治疗中度膝骨关节炎的临床效果。方法:选取2019年9月至2020年9月上海中医药大学附属龙华医院和上海中医药大学附属龙华医院金山分院门诊收治的KOA患者120例作为研究对象,按照随机数字表法随机分为针刀组、手法组和联合组,每组40例。针刀组采用单纯针刀治疗,手法组采用Mulligan手法治疗,联合组采用针刀联合Mulligan手法治疗。分别观察2组患者治疗前、治疗后及随访24周骨关节炎指数、疼痛视觉模拟评分变化情况、5次坐立试验情况和2组患者临床疗效情况。结果:与针刀组、手法组比较,联合组在治疗后和随访24周,在疼痛视觉模拟评分、骨关节炎指数评分和5次坐立试验情况改善方面差异均有统计学意义(均P<0.01),联合组临床疗效总有效率为97.50%,明显优于针刀组(92.10%)和手法组(75.00%),差异有统计学意义(P<0.05)。结论:针刀联合Mulligan手法治疗中度膝骨关节炎,在改善患者关节疼痛、僵硬和活动不利等症状在近期与远期疗效方面均效果显著,值得临床推广应用。

激进与保守碰撞下的加拿大公共教育管理体系改革——从安大略省《学校和董事会改进规划指南》说起

作为一种管理思想和手段,学校改进规划(School Development Planning)受到了教育界的广泛关注并应用于各项教育改革之中。伴随着公共教育管理体制改革,加拿大安大略省教育质量和责任办公室(EQAO)发布《学校和董事会改进规划指南》,包含树立意识、聚焦数据、问责沟通、制定文本、后续保障五部分内容,为加国安省中小学改进规划的制定与推行提供了良好范本与指导,展现了安省民主化、个性化、科学化的教育管理体系以及更加公平、自主的教育价值取向。

记加拿大皇家安大略博物馆收藏的一尊宋金菩萨像

加拿大皇家安大略博物馆收藏了一尊标示为来自河南安阳的石雕菩萨像,应为石窟造像。从该造像的造型、装饰等因素分析,其与现存北宋至金初北方地区同类石窟造像和菩萨塑像有较大相似之处。安阳地区宋金时期石窟营建已经处于衰落期,开凿石窟造像数量较少,加之该造像出处不明,为确定其来源地点增加了一定难度。

Comparison of Ontario’s roundwood and recycled fibre pulp and paper mills’performance using data Envelopment analysis

The pulp and paper industry converts roundwood and recycled fibre,collected from wastepaper into printing and writing papers,and other specialty grades of paper.The pulp and paper mills in Ontario have been facing extreme competitive pressures,which have affected their performance leading to several mill closures.The purpose of this study is to evaluate and compare the relative performance of three types of Ontario’s pulp and paper mills(using all fibre,only roundwood fibre,and only recycled fibre).This study uses bootstrap data envelopment analysis in analyzing and comparing the operational efficiency of the Ontario’s pulp and paper mills,with 224 sample data observations over a period of 17 years.The results indicate low levels of overall technical and managerial efficiencies in the pulp and paper mills using recycled fibre.The results of the study highlight that the pulp and paper industry needs to divert their attention to streamlining the manufacturing processes,reducing costs,improving raw material usage,and making capital investments in the new and improved technology,in order to improve the operational efficiency and competitiveness of the Ontario’s pulp and paper mills.The pulp and paper mills using recycled fibre require huge capital investments,especially for installing the latest de-inking technology.The results of this study provide policy makers with detailed performance analysis so that future input resources can be reallocated to improve the performance of the pulp and paper mills in Ontario.

Sudden Natural Deaths in Ontario,Canada:A Retrospective Autopsy Analysis(2012-2016)

This study was performed to identify the categories and distribution of sudden natural deaths(SNDs)in Ontario(ON)from January 2012 to December 2016 as no such reports have been published in ON,and the authors sought to find out the distribution of SND across ON by organ system,age,and sex.Three medicolegal databases were searched,and eight major categories of SND were identified and evaluated using multinomial logistic regression.During the 5-year period,10,880 autopsies were performed on individuals aged 1–100,who died of sudden and natural causes.Over 800 causes of SNDs were recorded from January 2012 to December 2016.The largest category of SND was attributed to diseases and complications of the cardiovascular system(64.1%)followed by the respiratory system(9.1%),gastrointestinal system(6.9%),central nervous system(6.0%),metabolic diseases(3.8%),chronic alcoholism(3.5%),other(2.4%),infectious diseases(2.2%),and cancer(1.8%).The five most common causes of SND were also cardiovascular in origin,which included atherosclerotic heart disease(n=2127,19.5%),atherosclerotic and hypertensive heart disease(n=711,6.5%),myocardial infarction(n=723,6.6%),hypertensive heart disease(n=518,4.8%),and pulmonary embolism(n=377,3.5%).Determination of cause of death in natural deaths is an important part in death investigation,which can provide crucial information in the interest of public health by identifying public health risks and monitoring disease trends.

Ontario Education Act and Related Statutes:An Overview

Canada is a federal country with a federal government, but according to the Constitution Act, 1867, "in and for each Province the Legislature may exclusively make Laws in relation to Education". Education is under the exclusive jurisdiction of provincial governments. There is no federal ministry of education, but there is a Council of Ministers of Education to offer provincial ministries and departments of education the opportunity to work together. In each province there is a ministry or de-