نتایج جستجو برای: abandonment of sites
تعداد نتایج: 21175335 فیلتر نتایج به سال:
Many freshwater fish species are considered vulnerable to stream temperature warming associated with climate change because they are ectothermic, yet there are surprisingly few studies documenting changes in distributions. Streams and rivers in the U.S. Rocky Mountains have been warming for several decades. At the same time these systems have been experiencing an increase in the severity and fr...
The ability to recognize when an agent abandons a plan is an open problem in the plan recognition literature and is a significant problem if these methods are to be applied in real systems. This paper presents an explicit, formal, and implemented solution to the problem of recognizing when an agent has abandoned one of its goals based on a theory of probabilistic model revision.
We compared early plant succession in four abandoned pastures of differing age since abandonment and a nearby secondary forest site in northwestern Ecuador. Two "Open" pastures had no tree canopy covering, and two "Guava" pastures had a well-developed canopy cover of Psidium guajaua. No site had been seeded with pasture grasses. All pastures were compared in a chronological sequence; nvo were m...
Consider a platform that wants to learn a personalized policy for each user, but the platform faces the risk of a user abandoning the platform if she is dissatisfied with the actions of the platform. For example, a platform is interested in personalizing the number of newsletters it sends, but faces the risk that the user unsubscribes forever. We propose a general thresholded learning problem t...
BACKGROUND Tuberculosis (TB) remains a public health problem, despite recent achievements in reducing incidence and mortality rates. In Brazil, these achievements were above the worldwide average, but marked by large regional heterogeneities. In Fortaleza (5th largest city in Brazil), the tuberculosis cure rate has been declining and treatment abandonment has been increasing in the past decade,...
BACKGROUND Oral chemotherapy is increasingly prescribed to treat cancer. Despite its benefits, concerns have been raised regarding adherence to therapy. The study objective was to compare and measure adherence, persistence, and abandonment in patients filling prescriptions in traditional retail (TR) versus specialty pharmacy (SP) channels. METHODS Using a retrospective cohort design, we selec...
Even thought the act of physical abandonment is a relatively common occurrence, it remains an understudied social phenomena. It has been an act of parents since earliest times, but even in our modern enlightened society, children are still ejected from their homes and physically abandoned in frightening numbers. Even though attention has been directed toward the understanding and combating of t...
This paper investigates the abandonment of an administrative innovationcorporate venture capital (CVC) programs by information technology (IT) corporations. CVC programs are modeled upon the venture capital (VC) practices of finding, funding, and guiding entrepreneurial startups. We draw upon prior research on organizational learning and innovation diffusion to empirically examine the role of i...
A long held view about the occupation of southern proto-Jê pit house villages of the southern Brazilian highlands is that these sites represent cycles of long-term abandonment and reoccupation. However, this assumption is based on an insufficient number of radiocarbon dates for individual pit houses. To address this problem, we conducted a programme of comprehensive AMS radiocarbon dating and B...
Agricultural land use commonly leaves a persistent signature on the ecosystems that develop after agricultural abandonment. Th is agricultural legacy limits the biodiversity supported by post-agricultural habitats compared to remnant habitats that have never been used for agriculture. In particular, beta diversity (variation in community composition across space) at both large and small spatial...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید