ON HASEMAN BOUNDARY VALUE PROBLEM FOR A CLASS OF META-ANALYTIC FUNCTIONS

In this article, Haseman boundary value problem for a class of meta-analytic functions is studied. The expression of solution and the condition of solvability for Haseman boundary value problem are obtained by changing the problem discussed into the equivalent Haseman boundary value problem of bi-analytic function. And the expression of solution and the condition of solvability depend on the canonical matrix.

Meta-analytic structural equation modeling:a primer

Meta-analytic structural equation modeling is a new research field which can help to explain the relationship between a group of variables in several studies by testing structural equation modeling.However,this methodology is still not very popular in many countries and researchers due to lack of promotion.This report aim s to giv e a primer on the principle of m eta-analytic structural equation modeling and provid e a reference for subsequent researchers to conduct m eta-analytic structural equation modeling analysis.

Walking pace and the risk of stroke:A meta-analysis of prospective cohort studies

Purpose:The extent to which walking pace is associated with a reduced risk for stroke remains unclear.This study examined the association between walking pace and stroke risk based on prospective cohort studies.Methods:Databases of PubMed,EMBASE,Web of Science,Scopus,and China National Knowledge Internet were searched from the inception dates to January 31,2019,for prospective cohort studies focusing on walking pace and risk of stroke in adults.Two reviewers independently extracted data and assessed the quality of the studies.The dependent measure was stroke incidence.Using random-effects models,a metaanalysis was performed to estimate the overall relative risks(RR)of stroke incidence and 95%confidence intervals(CIs)for the individuals with the fastest walking paces vs.individuals with the slowest walking paces.A dose-response relationship was also examined.Results:After screening 1294 titles/abstracts and 14 full-text studies identified in the search,7 studies(from 8 cohorts)were included in the metaanalysis.The 7 studies included a total of 135,645 participants(95.2%women;mean age 63.6 years)and 2229 stroke events(median follow-up time=8.0 years).Compared to individuals in the slowest walking-pace category(median=1.6 km/h),individuals in the fastest walking-pace category(median=5.6 km/h)had a 44%lower risk of stroke(pooled RR=0.56,95%CI:0.48-0.65).There was also a linear dose-response relationship(RR=0.87;95%CI:0.83-0.91),with the risk of stroke decreased by 13%for every 1 km/h increment in baseline walking pace.We observed similar results across walking-pace assessment,type of stroke ascertainment,stroke subtypes,sex,sample size,and duration of follow-up.Conclusion:Findings from this meta-analysis indicate that walking pace is inversely associated with the risk of stroke.

Effects of interrupting prolonged sitting on postprandial glycemia and insulin responses:A network meta-analysis

Purpose:This study aimed to evaluate the effectiveness of physical activity(PA)interrupting prolonged sitting(PS)on postprandial glycemia and insulin responses among adults.Methods:PubMed,EMBASE,Cochrane Library,Web of Science,CINAHL,PsycINFO,and the China National Knowledge Infrastructure databases were searched through September 30,2020.Randomized controlled trials(RCTs)that examined the effect of all forms of PA interrupting PS on postprandial glycemia and/or insulin responses among adults without chronic diseases were included in this study.The risk of bias of included studies was evaluated based on the Cochrane tool.A network meta-analysis was performed to estimate the summary standardized mean differences(SMDs)with 95%confidence intervals(95%CIs)with random effects.Results:Thirty crossover RCTs were included in our review.These RCTs included 9 types of interventions that interrupted PS.When compared to PS by itself,light-intensity PA intermittent interrupting(LPA-INT)PS and moderate-intensity PA intermittent interrupting(MPA-INT)PS significantly lowered postprandial glycemia(SMD=-0.46,95%CI:-0.70 to-0.21;SMD=-0.69,95%CI:-1.00 to-0.37,respectively)and significantly reduced postprandial insulin response(SMD=-0.46,95%CI:-0.66 to-0.26;SMD=-0.47,95%CI:-0.77 to-0.17,respectively).Results of the clustered ranking plot indicated that MPA-INT was the most effective intervention in lowering postprandial glycemia and insulin responses.Conclusion:Replacing PS with MPA-INT or LPA-INT has a positive effect in reducing postprandial glycemia and insulin responses,with MPA-INT being the optimal intervention strategy.

Legal Systems and Economic Development:The Case of Aruba Post-Coronavirus

This paper intends to critically review some of the challenges rooted in Aruba’s civil law legal heritage in stimulating a post-corona economic recovery which should ideally be driven towards economic diversification.It also seeks to contextualize the effect of Aruba’s civil law system on economic growth compared to other Caribbean states with similar size,population,and tourism dependency but with legal systems rooted in the common law.This paper’s methodological approach is meta-analytical and includes a critique of the labor laws as well as the substantive role of the state in driving economic performance that is a normative feature in some civil law states.It posits that Aruba’s economic responsiveness,to the coronavirus should consider legal origins as a factor that limits its capacity and capability to execute an effective restructuring of tired economic paradigms and introduce new economic models that would challenge its mono-economic status.