Strategic SurveyPub Date : 2015-01-01DOI: 10.1080/04597230.2015.1081433
{"title":"South Asia and Afghanistan","authors":"","doi":"10.1080/04597230.2015.1081433","DOIUrl":"https://doi.org/10.1080/04597230.2015.1081433","url":null,"abstract":"","PeriodicalId":35152,"journal":{"name":"Strategic Survey","volume":"115 1","pages":"299 - 330"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/04597230.2015.1081433","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59502040","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}
Strategic SurveyPub Date : 2015-01-01DOI: 10.1080/04597230.2015.1080967
Carly Fiorina, Lindsey Graham Mike Huckabee, B. Jindal
{"title":"Drivers of Strategic Change","authors":"Carly Fiorina, Lindsey Graham Mike Huckabee, B. Jindal","doi":"10.1080/04597230.2015.1080967","DOIUrl":"https://doi.org/10.1080/04597230.2015.1080967","url":null,"abstract":"","PeriodicalId":35152,"journal":{"name":"Strategic Survey","volume":"115 1","pages":"27 - 36"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/04597230.2015.1080967","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59501841","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}
Strategic SurveyPub Date : 2015-01-01DOI: 10.1080/04597230.2015.1080966
Mareike Dressler, ‡. Rileymurray
{"title":"Perspectives","authors":"Mareike Dressler, ‡. Rileymurray","doi":"10.1080/04597230.2015.1080966","DOIUrl":"https://doi.org/10.1080/04597230.2015.1080966","url":null,"abstract":". Signomials are obtained by generalizing polynomials to allow for arbitrary real exponents. This generalization offers great expressive power, but has historically sacrificed the organizing principle of “degree” that is central to polynomial optimization theory. We reclaim that principle here through the concept of signomial rings, which we use to derive complete convex relaxation hierarchies of upper and lower bounds for signomial optimization via sums of arithmetic-geometric exponentials (SAGE) nonnegativity certificates. The Positivstellensatz underlying the lower bounds relies on the concept of conditional SAGE and removes regularity conditions required by earlier works, such as convexity and Archimedeanity of the feasible set. Through worked examples we illustrate the practicality of this hierarchy in areas such as chemical reaction network theory and chemical engineering. These examples include comparisons to direct global solvers (e.g., BARON and ANTIGONE) and the Lasserre hierarchy (where appropriate). The completeness of our hierarchy of upper bounds follows from a generic construction whereby a Positivstellensatz for signomial nonnegativity over a compact set provides for arbitrarily strong outer approximations of the corresponding cone of nonnegative signomials. While working toward that result, we prove basic facts on the existence and uniqueness of solutions to signomial moment problems.","PeriodicalId":35152,"journal":{"name":"Strategic Survey","volume":"115 1","pages":"15 - 26"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/04597230.2015.1080966","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59501747","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}
Strategic SurveyPub Date : 2014-01-01DOI: 10.1080/04597230.2014.954382
Marie, Scott, Bryan Yasinsac, Wojciech, ENGELHARD-BARFIELD, Nicolas Etcheparre, Jorg Rehder, Alex Ritchie, Roselyn
{"title":"Europe","authors":"Marie, Scott, Bryan Yasinsac, Wojciech, ENGELHARD-BARFIELD, Nicolas Etcheparre, Jorg Rehder, Alex Ritchie, Roselyn","doi":"10.1080/04597230.2014.954382","DOIUrl":"https://doi.org/10.1080/04597230.2014.954382","url":null,"abstract":"On August 25, 2014, a Frankfurt court issued a preliminary injunction against the ridesharing company, Ober, for violating Germany's Passenger Transportation Act because Qber was providing transportation services without mandatory insurance and licensing.' A taxi association sought the injunction because taxi drivers were losing business to tber. Shortly thereafter, on September 16, the court revoked the preliminary injunction holding that, though banning Qber in Germany was probably correct for violating the Passenger Transportation Act, the underlying matter was not \"urgent\" as is required for preliminary injunctions. The taxi association had waited several months before filing the action against Uber. Not surprisingly, this decision did not sit well with the taxi association, nor with taxi drivers. Therefore, rather than filing another action against tber, two separate Frankfurt-based taxi drivers took measures into their own hands and ordered rides on Qber. They subsequently sought their own injunctions against the respective Ober drivers. Frankfurt courts issued preliminary injunctions against the individual drivers rather than against the corporate entity of tber.3 Taking action against the tber drivers was meant to scare other","PeriodicalId":35152,"journal":{"name":"Strategic Survey","volume":"114 1","pages":"111 - 150"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/04597230.2014.954382","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59500852","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}
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