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889
Ricci Flow with Surgery on Three-Manifolds
"... This is a technical paper, which is a continuation of [I]. Here we verify most of the assertions, made in [I, §13]; the exceptions are (1) the statement that a 3-manifold which collapses with local lower bound for sectional curvature is a graph manifold- this is deferred to a separate paper, as the ..."
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Cited by 448 (2 self)
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constant scalar curvature one, and I has length 2ǫ −1; here ǫ-close refers to C N topology, with N> ǫ −1. A parabolic neighborhood P(x, t, ǫ −1 r, r 2) is called a strong ǫ-neck, if, after scaling with factor r −2, it is ǫ-close to the evolving standard neck, which at each
The Determinants of Credit Spread Changes.
- Journal of Finance
, 2001
"... ABSTRACT Using dealer's quotes and transactions prices on straight industrial bonds, we investigate the determinants of credit spread changes. Variables that should in theory determine credit spread changes have rather limited explanatory power. Further, the residuals from this regression are ..."
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Cited by 422 (2 self)
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changes. Below, we investigate the determinants of credit spread changes. From a contingent-claims, or noarbitrage standpoint, credit spreads obtain for two fundamental reasons: 1) there is a risk of default, and 2) in the event of default, the bondholder receives only a portion of the promised payments
Weak-Memory Local Reasoning
"... Program logics are formal logics designed to facilitate specification and correctness reasoning for software programs of a particular programming language. Separation logic, a new program logic for C-like pointer programs, has found great success due in large part to its embodiment of a local reason ..."
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Program logics are formal logics designed to facilitate specification and correctness reasoning for software programs of a particular programming language. Separation logic, a new program logic for C-like pointer programs, has found great success due in large part to its embodiment of a local
Coil sensitivity encoding for fast MRI. In:
- Proceedings of the ISMRM 6th Annual Meeting,
, 1998
"... New theoretical and practical concepts are presented for considerably enhancing the performance of magnetic resonance imaging (MRI) by means of arrays of multiple receiver coils. Sensitivity encoding (SENSE) is based on the fact that receiver sensitivity generally has an encoding effect complementa ..."
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Cited by 193 (3 self)
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imaging techniques, MRI stands out by a rarely stated peculiarity: the size of the details resolved with MRI is much smaller than the wavelength of the radiation involved. The reason for this surprising ability is that the origin of a resonance signal is not determined by optical means such as focusing
Enhancing Server Availability and Security Through Failure-Oblivious Computing
- In Proceedings 6 th Symposium on Operating Systems Design and Implementation (OSDI
, 2004
"... We present a new technique, failure-oblivious computing, that enables servers to execute through memory errors without memory corruption. Our safe compiler for C inserts checks that dynamically detect invalid memory accesses. Instead of terminating or throwing an exception, the generated code simply ..."
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Cited by 180 (37 self)
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techniques 1) make these servers invulnerable to known security attacks that exploit memory errors, and 2) enable the servers to continue to operate successfully to service legitimate requests and satisfy the needs of their users even after attacks trigger their memory errors. We observed several reasons
Longer-term effects of Head Start
- American Economic Review
, 2002
"... Abstract Public early intervention programs like Head Start are often justified as investments in children. Yet nothing is known about the long-term effects of Head Start. This paper draws on unique data from the Panel Study of Income Dynamics to provide new evidence on the effects of Head Start on ..."
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Cited by 131 (5 self)
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, one child may participate in Head Start because family resources are low when the child is age 4 or 5 but siblings may attend other preschools (or no preschool) because resources are less constrained when the siblings are age 4 or 5. For this reason, we include a control for family income averaged
Region-Based Shape Analysis with Tracked Locations
- POPL '05
, 2005
"... This paper proposes a novel approach to shape analysis: using local reasoning about individual heap locations instead of global reasoning about entire heap abstractions. We present an inter-procedural shape analysis algorithm for languages with destructive updates. The key feature is a novel memory ..."
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Cited by 100 (1 self)
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to simpler algorithm specifications, because of local reasoning about the single location; 2) leads to efficient algorithms, because of the smaller granularity of the abstraction; and 3) makes it easier to develop context-sensitive, demand-driven, and incremental shape analyses. We also show
1Local Identification of Overcomplete Dictionaries
"... This paper presents the first theoretical results showing that stable identification of overcomplete µ-coherent dictionaries Φ ∈ Rd×K is locally possible from training signals with sparsity levels S up to the order O(µ−2) and signal to noise ratios up to O( d). In particular the dictionary is recove ..."
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This paper presents the first theoretical results showing that stable identification of overcomplete µ-coherent dictionaries Φ ∈ Rd×K is locally possible from training signals with sparsity levels S up to the order O(µ−2) and signal to noise ratios up to O( d). In particular the dictionary
Indicators for Social and Economic Coping Capacity - Moving Toward a Working Definition of Adaptive Capacity”, Wesleyan-CMU Working Paper.
, 2001
"... Abstract This paper offers a practically motivated method for evaluating systems' abilities to handle external stress. The method is designed to assess the potential contributions of various adaptation options to improving systems' coping capacities by focusing attention directly on the u ..."
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Cited by 109 (14 self)
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of the options listed above would work as displayed in Differences in magnitude and distribution of cost across the population and over time would surely be critical in contemplating the potentially limiting role of resource availability (Determinant #2) for options A through C. If the threats appeared when
Reasoning about SMP in FreeBSD
- In Proceedings of BSDCon’03 (September 2003), USENIX
"... While the subject of SMP locking primitives has been well covered in the literature [Val][Schm][Bald][Leh], there has been relatively little discussion on the rationale and process behind the application of these locking primitives. This leads to an inverted problem where the bulk of the work in mak ..."
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Cited by 1 (0 self)
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solutions for correctly locking up the affected piece of code. All our examples are taken from actual committed versions of the FreeBSD source. 1. Global Reasoning Our first guideline pertains to the difference between global reasoning and local reasoning. To paraphrase a famous quote about distributed
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