نتایج جستجو برای: tier
تعداد نتایج: 8082 فیلتر نتایج به سال:
Most HIV-1 vaccines elicit neutralizing antibodies that are active against highly sensitive (tier-1) viruses or rare cases of vaccine-matched neutralization-resistant (tier-2) viruses, but no vaccine has induced antibodies that can broadly neutralize heterologous tier-2 viruses. In this study, we isolated antibodies from an HIV-1-infected individual that targeted the gp41 membrane-proximal exte...
An e-Transaction is one that executes exactly-once despite failures. This paper describes a distributed protocol that implements the abstraction of e-Transactions in three-tier architectures. Three-tier architectures are typically Internet-oriented architectures, where the end-user interacts with front-end clients (e.g., browsers) that invoke middle-tier application servers (e.g., web servers) ...
HIV-1 Envelope (Env) variants are grouped into tiers by their neutralization-sensitivity phenotype. This helped to recognize that tier 1 neutralization responses can be elicited readily, but do not protect against new infections. Tier 3 viruses are the least sensitive to neutralization. Because most circulating viruses are tier 2, vaccines that elicit neutralization responses against them are n...
How will the distribution of welfare, consumption, and leisure across households be affected by social security reform? This paper addresses this question for social security reforms with a two-tier structure by comparing steady states under a realistic version of the current U.S. system and under the two-tier system. The first tier is a mandatory, defined-contribution pension offering a retire...
The CORBA standard now incorporates support for reliability through two distinct mechanisms — replication (using the Fault Tolerant CORBA standard) and transactions (using the CORBA Object Transaction Service). Transactions represent a roll-back reliability mechanism, and handle a fault by reverting to the last committed state, and by discarding operations that were in progress at the time of t...
The purpose of this study was to examine the role of a dynamic assessment (DA) of decoding in predicting responsiveness to Tier 2 small-group tutoring in a response-to-intervention model. First grade students (n = 134) who did not show adequate progress in Tier 1 based on 6 weeks of progress monitoring received Tier 2 small-group tutoring in reading for 14 weeks. Student responsiveness to Tier ...
This quantitative study compared the implementation of a problem-based curriculum in precalculus and a modular-style implementation of traditional curriculum in precalculus to the historical instructional methods at a western Tier 2 public university. The goal of the study was to determine if either alternative approach improved student performance in precalculus and better prepared students fo...
STUDY OBJECTIVE To determine the relative effectiveness of differences in response time interval, proportion of bystander CPR, and type and tier of emergency medical services (EMS) system on survival after out of hospital cardiac arrest. METHODS We performed a comprehensive literature search, excluding EMS systems other than those of interest (systems of interest were those comprising one tie...
We propose a next generation Internet architecture that will allow natural sharing of resources among multiple organizations by dynamically reconfiguring and creating a virtual network for a particular application. Our architecture called "Internet 3.0" consists of a 3-tier object model. The bottom tier consists of a high-speed network infrastructure owned by multiple ISPs. The second tier cons...
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