Numerische Mathematik最新文献

{"title":"Foreword to the special issue on the neuroscience of obesity and related disorders.","authors":"Trevor Steward, Christina E Wierenga","doi":"10.1007/s11154-022-09739-4","DOIUrl":"10.1007/s11154-022-09739-4","url":null,"abstract":"","PeriodicalId":49733,"journal":{"name":"Numerische Mathematik","volume":"146 1","pages":"679-681"},"PeriodicalIF":8.2,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9307530/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89643879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recursive Programming","authors":"E. Dijkstra","doi":"10.1145/3544585.3544601","DOIUrl":"https://doi.org/10.1145/3544585.3544601","url":null,"abstract":"ously, and the available memory space is therefore used rather uneconomically. Furthermore—and this is a more serious objection—it is then impossible to call in a subroutine while one or more previous activations of the same subroutine have not yet come to an end, without losing the possibility of finishing them off properly later on. We intend to describe the principles of a program structure for which these two objections no longer hold. In the first place we sought a means of removing the second restriction, for this essentially restricts the admissable structure of the program; hence the name “Recursive Programming”. More efficient use of the memory as regards the internal working spaces of subroutines is a secondary con­ sequence not without significance. The solution can be applied under perfectly general conditions, e.g. in the structure of an object program to be delivered by an ALGOL 60 compiler. The fact that the proposed methods tend to be rather time consuming on an average present day computer, may give a hint in which direction future design might go. Recursive Programming","PeriodicalId":49733,"journal":{"name":"Numerische Mathematik","volume":"1 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64052755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stabilization-free HHO a posteriori error control","authors":"F. Bertrand, C. Carstensen, Benedikt Gräßle, Ngoc Tien Tran","doi":"10.1007/s00211-023-01366-8","DOIUrl":"https://doi.org/10.1007/s00211-023-01366-8","url":null,"abstract":"","PeriodicalId":49733,"journal":{"name":"Numerische Mathematik","volume":"154 1","pages":"369 - 408"},"PeriodicalIF":2.1,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41876768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Continuous data assimilation for displacement in a porous medium","authors":"H. Bessaih, V. Ginting, Bradley McCaskill","doi":"10.1007/s00211-022-01306-y","DOIUrl":"https://doi.org/10.1007/s00211-022-01306-y","url":null,"abstract":"","PeriodicalId":49733,"journal":{"name":"Numerische Mathematik","volume":"151 1","pages":"927 - 962"},"PeriodicalIF":2.1,"publicationDate":"2022-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51843405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Early home discharge after robot-assisted coronary artery bypass grafting.","authors":"Alexander Spanjersberg, Leendert Hoek, Jan Paul Ottervanger, Thi-Yen Nguyen, Emel Kaplan, Roland Laurens, Sandeep Singh","doi":"10.1093/icvts/ivac134","DOIUrl":"10.1093/icvts/ivac134","url":null,"abstract":"<p><strong>Objectives: </strong>Robot-assisted coronary artery bypass grafting (CABG) has been developed as a less invasive alternative for conventional CABG to enhance postoperative recovery, patient satisfaction and early discharge to home. Furthermore, it may provide a basis for hybrid coronary revascularization. To determine the feasibility of this procedure, we compared robot-assisted with conventional off-pump CABG.</p><p><strong>Methods: </strong>All consecutive patients undergoing a robot-assisted left internal mammary artery-to-left anterior descending coronary artery procedure were compared to consecutive patients undergoing conventional off-pump CABG for single-vessel disease from October 2016 to July 2019. The primary outcome was discharge to home within 5 days after the operation. Secondary outcomes were total hospital stay, reoperations within 48 h, transfusions, atrial fibrillation, 30-day mortality and quality of life 1 month postoperatively. A propensity matched cohort was assembled to correct for possible confounders.</p><p><strong>Results: </strong>A total of 107 patients who had robot-assisted CABG were compared to 194 patients who had conventional off-pump CABG. The primary outcome was reached in 51% of the robot-assisted group versus 19% of the conventional off-pump group (P < 0.01). The median postoperative hospital stay was 5 days for the robot-assisted group versus 7 days in the conventional off-pump group (P < 0.01). Other secondary outcomes did not differ significantly between the groups, and the quality of life 1 month after the operation was equal. The results after propensity matching were similar.</p><p><strong>Conclusions: </strong>Early discharge to home is more frequent for patients who have robot-assisted CABG than in those who have conventional off-pump CABG, with no difference in health-related quality of life. Therefore, this approach may reduce healthcare resources and provide a solid basis for hybrid coronary revascularization.</p>","PeriodicalId":49733,"journal":{"name":"Numerische Mathematik","volume":"127 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9245385/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73460441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Convergence rates of a dual gradient method for constrained linear ill-posed problems","authors":"Q. Jin","doi":"10.1007/s00211-022-01300-4","DOIUrl":"https://doi.org/10.1007/s00211-022-01300-4","url":null,"abstract":"","PeriodicalId":49733,"journal":{"name":"Numerische Mathematik","volume":"151 1","pages":"841 - 871"},"PeriodicalIF":2.1,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45869179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Godunov type scheme and error estimates for scalar conservation laws with Panov-type discontinuous flux","authors":"Shyam Sundar Ghoshal, John D. Towers, Ganesh Vaidya","doi":"10.1007/s00211-022-01297-w","DOIUrl":"https://doi.org/10.1007/s00211-022-01297-w","url":null,"abstract":"","PeriodicalId":49733,"journal":{"name":"Numerische Mathematik","volume":"151 1","pages":"601 - 625"},"PeriodicalIF":2.1,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46838286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rational gauss quadrature rules for the approximation of matrix functionals involving stieltjes functions","authors":"J. Alahmadi, M. Pranic, L. Reichel","doi":"10.1007/s00211-022-01293-0","DOIUrl":"https://doi.org/10.1007/s00211-022-01293-0","url":null,"abstract":"","PeriodicalId":49733,"journal":{"name":"Numerische Mathematik","volume":"151 1","pages":"443 - 473"},"PeriodicalIF":2.1,"publicationDate":"2022-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49261180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mixed finite elements for Bingham flow in a pipe","authors":"T. Gustafsson, P. Lederer","doi":"10.1007/s00211-022-01332-w","DOIUrl":"https://doi.org/10.1007/s00211-022-01332-w","url":null,"abstract":"","PeriodicalId":49733,"journal":{"name":"Numerische Mathematik","volume":"152 1","pages":"819 - 840"},"PeriodicalIF":2.1,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43783534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improved error estimates for the finite volume and the MAC schemes for the compressible Navier–Stokes system","authors":"E. Feireisl, M. Lukácová-Medvidová, Bangwei She","doi":"10.1007/s00211-023-01346-y","DOIUrl":"https://doi.org/10.1007/s00211-023-01346-y","url":null,"abstract":"","PeriodicalId":49733,"journal":{"name":"Numerische Mathematik","volume":"153 1","pages":"493-529"},"PeriodicalIF":2.1,"publicationDate":"2022-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43696751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}