Moduli stacks of Serre stable representations in tilting theory

We introduce a new moduli stack, called the Serre stable moduli stack, which corresponds to studying families of point objects in an abelian category with a Serre functor. This allows us in particular, to re-interpret the classical derived equivalence between most concealed-canonical algebras and weighted projective lines by showing they are induced by the universal sheaf on the Serre stable moduli stack. We explain why the method works by showing that the Serre stable moduli stack is the tautological moduli problem that allows one to recover certain nice stacks such as weighted projective lines from their moduli of sheaves. As a result, this new stack should be of interest in both representation theory and algebraic geometry

Asymptotically simple spacetime manifolds

This is the published version, also available here: http://dx.doi.org/10.1063/1.1666825.Asymptotic simplicity is shown to be k‐stable (k≥3) at any Minkowski metric on R4 in both the Whitney fine Ck topology and a coarser topology (in which the Ck twice‐convariant symmetric tensors form a Banach manifold whose connected components consist of tensor field asymptotic to one another at null infinity). This result, together with a sequential method for solving the field equations previously proposed by the authors, allows a fairly straightforward proof that a well‐known result in the linearized theory holds in the full nonlinear theory as well: There are no nontrivial (i.e., non‐Minkowskian) asymptotically simple vacuum metrics on R4 whose conformal curvature tensors result from prescribing zero initial data on past null infinity

French leaders look at The United Nations

Cover title"1085"--handwritten on coverIncludes bibliographical reference

Opportunity Pursuit and The Disinhibition Paradox

The perception, pursuit, and exploitation of opportunity are central to entrepreneurship (new venture, corporate, social) and some theories of behavioral strategy. While relatively unfettered cognition, appetitive impulse, and behavior may favor perceiving and acting on opportunities, such disinhibition may present a social liability and thus interfere with reaching opportunity exploitation. This dissertation examines the connection between disinhibition and nascent opportunity pursuit. Drawing primarily on psychological and entrepreneurial literature, this work develops hypotheses related to the effects of disinhibition in a would-be founder/entrepreneur on other individuals. The research focuses on the earliest stage of nascent entrepreneurial action. The underlying research motivation is based on abductive reasoning, triangulating existing findings, cases, and theory. An experiment was designed to provide a focused, causal test of the research hypotheses. The design eliminated endogeneity issues, confounds, winners' bias, retrospective post-hoc bias, and other biases inherent to highly nascent entrepreneurship. The results shed light on a multilevel tension at the heart of early stage entrepreneurship. In particular, previous research has shown a positive relationship between disinhibition and entrepreneurial intention, nascent entrepreneurial action, and being an entrepreneur. However results of the research presented here show a significant negative social effect of disinhibition. Specifically, apparent disinhibition in a potential founder has sizable adverse effects on others' assessments: of the founder, of the likelihood of venture success, and of interest in supporting (joining) the venture. These findings indicate that an individual factor impelling individual entrepreneurial action presents a friction for advancing in the entrepreneurial process. This research makes several contributions to existing literature. In relation to entrepreneurship, it contributes needed insight into the social psychology of nascent opportunity pursuit. In relation to the psychological sciences, it provides a vocationally contextualized examination of disinhibition. In connection with other work reviewed, this dissertation contributes to a developing disinhibition perspective of entrepreneurial action. In relation to other organizational literature, it suggests important cross-level tensions related to less inhibited actors and innovation. In relation to broader policy, it suggests the importance of programs and other interventions to harness entrepreneurial behavior and proclivities, and to channel disinhibition to productive ends

Dugoročno istraživanje ulova (1949-2010) i ribolovnog napora izraelskih koćarica u istočnom dijelu Sredozemlja

The trawl fishery of the Mediterranean coast of Israel was analyzed vis á vis catch and fishing effort for the years 1949-2010. The Maximum Sustainable Yield (MSY) was calculated using the Fox surplus-yield model and was found to be 1,413 ton per annum using 1,415 units of effort (fishing days X engine power divided by 1000). Only during nine years (1997-2005) did fishing effort exceed the value for which the yield is the MSY by an average of 184.9 units of effort, but the yield was similar to that of the previous years. During 10 years the catch exceeded the MSY by an average of 153±119 tons. This result was used to justify the “freezing” of the local trawl fleet at the beginning of the 1990’s.Koćarski ulov na sredozemnoj obali Izraela analiziran je s obzirom na ulov i ribolovni napor od 1949. do 2010. godine. Maksimalni održivi prinos (MSY) izračunat je primjenom Fox modela za viši prekomjerni ulov i utvrđeno je da iznosi 1.413 tona godišnje koristeći 1.415 jedinica napora (dani ribolova x motorna snaga podijeljena s 1000). Tijekom devet godina (1997.- 2005.) ribolovni napor premašuje vrijednost čiji maksimalni održivi prinos (MSY) iznosi u prosjeku 184,9 jedinica, dok je prinos bio sličan onome prethodnih godina. Tijekom 10 godina ulov je premašio, maksimalni održivi prinos (MSY) za prosječno 153 ± 119 tona. Taj rezultat je bio upotrebljen kao argument za „zamrzavanje“ lokalne kočarske flote početkom 1990-ih godina

Tetrakis(μ3-9-oxa-10-boraanthracen-10-olato)tetrakis[(diethyl ether)lithium]

The title compound, [Li4O4(C12H8BO)4(C4H10O)4], features a Li4O4 cube. Each Li atom in the cube is additionally coordinated by a diethyl ether mol­ecule and each O atom in the cube carries a 9-oxa-10-boraanthracene residue. The crystal studied was a non-merohedral twin [twin law (-1 0 0 / 0 0 1 / 0 1 0); the contribution of the major twin component refined to 0.553 (3)] emulating apparent tetra­gonal symmetry, whereas the actual crystal system is just ortho­rhom­bic