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This paper considers intervals of real matrices with respect to partial orders and the problem to infer from some exposed matrices lying on the boundary of such an interval that all real matrices taken from the interval possess a certain property. In many cases such a property requires that the chosen matrices have an identically signed inverse. We also briefly survey related problems, e.g., the invariance of matrix properties under entry-wise perturbations.
Compliance und Compliance-Management sind als Schlagworte mittlerweile fest in das alltägliche unternehmerische Handeln und Denken integriert. Ausgehend von der unternehmerischen Legalitätspflicht und dem Bedürfnis nach Haftungsvermeidung durch bestmögliche Organisation liegt es nahe, dass Unternehmen, Unternehmer und Führungskräfte ein Bedürfnis nach rechtssicherem Agieren in einem rechtssicheren Umfeld haben. Ob und inwiefern hieraus eine Rechtspflicht zur Errichtung einer Compliance-Organisation bzw. eines Compliance-Management-Systems (CMS) abzuleiten ist, ist allerdings jedenfalls auf den ersten Blick nach wie vor unklar. Ob es sich bei der Einführung eines CMS bzw. einer Compliance-Organisation um eine nur angezeigte Notwendigkeit oder aber eine rechtliche Pflicht handelt, lässt sich anhand der bisherigen Entwicklung in Literatur und Rechtsprechung mittlerweile recht eindeutig beantworten.
Compliance im Mittelstand
(2016)
Die Etablierung eines Compliance-Management-Systems (CMS) stößt v. a. im Mittelstand immer wieder auf teils erheblichen (kosten- wie kulturbedingten) Widerstand. Der nachfolgende Beitrag erläutert Motive und Gründe zur Einrichtung eines CMS, welches eine systematische Sicherstellung der Einhaltung von geltenden Gesetzen sowie internen Vorgaben gewährleisten soll, um Unternehmen und deren Organe sowie Mitarbeiter vor rechtlichen Risiken zu schützen.
Schicksal der Freybrücke
(2016)
Karl Bernhard gilt als einer der bedeutendsten Bauingenieure in Deutschland Anfang des 20. Jahrhunderts. Seine beiden Brücken entlang der Heerstraße in Berlin, die Stößenseebrücke und die Freybrücke über die Havel, sind seit 1909 verkehrstechnisch von höchster Bedeutung für die Ost-West-Verbindung der Stadt. Die Freybrücke wurde jedoch im März 2015 abgerissen, um einem Ersatzneubau Platz zu machen. Wie kam es dazu, dass eine historisch und verkehrstechnisch derart wichtige, seit 1971 unter Denkmalschutz stehende Konstruktion so lange vernachlässigt wurde, bis sie abbruchreif war? Dieser Artikel ist eine Hommage an Bernhards Havelbrücke und geht ihrer wechselvollen Geschichte nach.
So is About Urbanity
(2016)
Südstadt Tübingen is a successful military land redevelopment project, in which functional mix and urban diversity have been identified as main goals. In the whole development process, joint building venture has been utilized as important urban development instrument. On one hand, this instrument helps citizens development adaptive and affordable living space and let them find own identity to the new quarter; on the other hand, it is also important to cultivate urban diversity and suitable spatial feeling, mix relationship in living and working conditions, so that the quarters will have very flexible structure to accommodate diversified urban life styles.
In this paper totally nonnegative (positive) matrices are considered which are matrices having all their minors nonnegative (positve); the almost totally positive matrices form a class between the totally nonnegative matrices and the totally positive ones. An efficient determinantal test based on the Cauchon algorithm for checking a given matrix for falling in one of these three classes of matrices is applied to matrices which are related to roots of polynomials and poles of rational functions, specifically the Hankel matrix associated with the Laurent series at infinity of a rational function and matrices of Hurwitz type associated with polynomials. In both cases it is concluded from properties of one or two finite sections of the infinite matrix that the infinite matrix itself has these or related properties. Then the results are applied to derive a sufficient condition for the Hurwitz stability of an interval family of polynomials. Finally, interval problems for a subclass of the rational functions, viz. R-functions, are investigated. These problems include invariance of exclusively positive poles and exclusively negative roots in the presence of variation of the coefficients of the polynomials within given intervals.
This paper builds upon the widely-used resource-based approach to explaining survival of new technology-based firms (NTBFs). However, instead of looking at the NTBF's initial resource configuration, a process-oriented perspective is taken by focusing on the entrepreneur's ability to transform resources in response to triggers resulting from market interactions. Transaction relations reflect these interactions and are thus operationalized with a suggested method for measuring the status of venture emergence (VE) applicable to early-stage NTBFs. NTBFs' value network maturity is reflected in the number and strength of their transaction relations in the four market dimensions customer, investor, partner, and human resource. Business plans of NTBFs represent the artifact that contains this data in the form of transaction relation descriptions. Using content analysis, a multi-step combined human and computer coding process has been developed to annotate and classify transaction relations from business plans in order to empirically determine NTBFs' status of VE. Results of the business plan analysis suggest that the level of transaction relations allows to draw conclusions on the VE status. Moreover, applying the developed process, first analysis of a business plan coding test shows that the transaction relation based VE status significantly relates to NTBF survival capability.