Februar 1981最新文献

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Elimination holonomer Bindungen über generalisierte Koordinaten im Hamilton-Formalismus 掌握了汉密尔福尔定律
Februar 1981 Pub Date : 1981-12-31 DOI: 10.1002/ZAMM.19810610215
J. Baumgarte
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引用次数: 2
Bemerkungen zum Bettischen Satz 让我们谈谈
Februar 1981 Pub Date : 1981-12-31 DOI: 10.1002/ZAMM.19810610214
H. Bufler
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引用次数: 0
Anwendung des Schulz -Verfahrens zur Nachkorrektur einer näherungsweise berechneten verallgemeinerten Inyersen einer Matrix 使用斯克资中尉程序重新修正一个大致价值的原表
Februar 1981 Pub Date : 1981-12-31 DOI: 10.1515/9783112550007-008
W. Mönch
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引用次数: 0
Application of Invariant Variational Principles to the Optimal Design of a Column 不变变分原理在立柱优化设计中的应用
Februar 1981 Pub Date : 1981-12-31 DOI: 10.1002/ZAMM.19810610203
V. Komkov
{"title":"Application of Invariant Variational Principles to the Optimal Design of a Column","authors":"V. Komkov","doi":"10.1002/ZAMM.19810610203","DOIUrl":"https://doi.org/10.1002/ZAMM.19810610203","url":null,"abstract":"Using Noether's technique we derive some invariants associated with the problems of optimization of design. While specifically a beam design problem is discussed here, the technique can be generalized in an obvious manner to thin plate, or shell problems. The specific problem discussed in this paper concerns the optimization of a column. Some invariants derived here as examples of the technique can be used to point out the basic difficulties discovered by much harder arguments in many recent papers. In particular, our method points out the existence of singularities which are associated with an optimal column design even in the absence of multiple eigenvalues in the Euler's eigenvalue problem, which corresponds to the buckling phenomenon. \u0000 \u0000 \u0000 \u0000Unter Verwendung des Verfahrens von Noether werden einige Invarianten hergeleitet, die bei der Optimierung von Strukturen auftreten. Obwohl speziell ein Balkenoptimierungsproblem diskutiert wird, kann das Verfahren auf dunne Platten oder Schalen verallgemeinert werden. Das speziell in dieser Arbeit behandelte Problem bezieht sich auf die Optimierung eines Stabes. Einige hier als Beispiele des Verfahrens hergeleitete Invarianten konnen dazu benutzt werden, die prinzipiellen Schwierigkeiten aufzuzeigen, die in vielen neuen Arbeiten erst durch viel schwerfalligere Argumente sichtbar werden. Insbesondere zeigt unsere Methode die Existenz von Singularitaten auf, welche mit dem optimalen Entwurf eines Stabes auch beim Fehlen von mehrfachen Eigenwerten beim Eulerschen Eigenwertproblem entsprechend der Stabknickung verbunden sind.","PeriodicalId":114170,"journal":{"name":"Februar 1981","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121618475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Bereitstellung absolut angeschlossener Normalstrahlungsquellensätze für die praxisorientierte Weitergabe der Aktivitätseinheit 向向停止实际活动的单位传送正常辐射资料
Februar 1981 Pub Date : 1981-12-31 DOI: 10.1515/9783112524107-010
K. Sucker, E. Schönfeld, R. Brust, H. Greupner, H. Rothe
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引用次数: 0
Die 4jtX-Normalmeßeinrichtung des ASMW 高达4jtx
Februar 1981 Pub Date : 1981-12-31 DOI: 10.1515/9783112524107-009
E. Schönfeld, R. Brust, H. Oreupner, H. Rothe
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引用次数: 0
Konzept perzentiler Diffusionstiefen schneller Elektronen 你没有感觉到什么
Februar 1981 Pub Date : 1981-12-31 DOI: 10.1080/10256018108544543
H. Thümmel
{"title":"Konzept perzentiler Diffusionstiefen schneller Elektronen","authors":"H. Thümmel","doi":"10.1080/10256018108544543","DOIUrl":"https://doi.org/10.1080/10256018108544543","url":null,"abstract":"Die Diffusionstiefe schneller Elektronen wird aus der Umkehrtiefenverteilung der kontinuierlichen Diffusionstheorie von Bothe abgeleitet und als perzentile Grose aufgefast, die angibt, welcher Bruchteil der Elektronen des Primarbundels zur Diffusion gelangt ist. Dadurch gelingt es, den Begriff ‚Diffusionstiefe’ zu prazisieren, die Abweichung zwischen den nach unterschiedlichen Kriterien bestimmten experimentellen Diffusionstiefen zu Klaren sowie ihren Zusammenhang mit theoretischen Diffusionstiefen herzustellen.","PeriodicalId":114170,"journal":{"name":"Februar 1981","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124819126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Note on Runs 跑步须知
Februar 1981 Pub Date : 1981-12-31 DOI: 10.1002/ZAMM.19810610210
I. I. Glick
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引用次数: 3
On the Fibre Pull-out Problem 关于纤维拔出问题
Februar 1981 Pub Date : 1981-12-31 DOI: 10.1515/9783112550007-005
N. Phan-Thien, C. J. Goh
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引用次数: 0
Systematic Error of Relative Measurement of Nuclide Activity in Beta-Radiation Sources (in Russian) 辐射源中核素活度相对测量的系统误差(俄文)
Februar 1981 Pub Date : 1981-12-31 DOI: 10.1515/9783112524107-011
A. E. Hohuh, M. G. Kousmine, I. A. Sokolova
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引用次数: 0
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