Compressive Sensing with Prior Support Quality Information and Application to Massive MIMO Channel Estimation with Temporal Correlation

In this paper, we consider the problem of compressive sensing (CS) recovery with a prior support and the prior support quality information available. Different from classical works which exploit prior support blindly, we shall propose novel CS recovery algorithms to exploit the prior support adaptively based on the quality information. We analyze the distortion bound of the recovered signal from the proposed algorithm and we show that a better quality prior support can lead to better CS recovery performance. We also show that the proposed algorithm would converge in \mathcal{O}\left(\log\mbox{SNR}\right) steps. To tolerate possible model mismatch, we further propose some robustness designs to combat incorrect prior support quality information. Finally, we apply the proposed framework to sparse channel estimation in massive MIMO systems with temporal correlation to further reduce the required pilot training overhead.Comment: 14 double-column pages, accepted for publication in IEEE transactions on signal processing in May, 201

The negative effect of financial constraints on planning prevention activities: some evidence from the Italian experience

This study was aimed to assess the association between regional financial deficits and Recovery Plans and the quality of the 702 projects developed by the Italian Regions within the National Prevention Plan 2010-13. Multivariate analyses showed significant associations between Recovery Plans and low quality of projects, possibly due to weak regional public health capacities. Regions with Recovery Plans are likely to focus mainly on short-term issues with a high impact on health care costs, leaving few resources available for prevention. A different approach to financial deficit focused on long-term strategies, including those for health promotion and disease prevention, is needed

A MODEL FOR MEASURING THE RELATIONSHIP BETWEEN SERVICE RECOVERY AND SERVICE QUALITY: A CASE STUDY AT THE PUBLIC UNIVERSITY LIBRARY

The study aimed to investigate the critical success factors of service recovery towards service quality at the National University of Malaysia (UKM) library. The study also proposes a model of systematic complaint management which applied to academic library as a tool of service recovery. The variables included in this research are empowerment, culture and psychology, management system, compensation and speed of recovery as the independent variables and service quality as the dependent variable. A questionnaire was designed and used as the data gathering instrument based on past research. A total of 315 samples were successfully gathered from 377 questionnaires distributed among the regular users of Tun Seri Lanang Library (UKM). Based on the generated results, it’s proven that there is a positive significant relationship between service recovery and service quality (r = 0.632**, p = 0.000) at the 1 per cent significance levelService recovery, Complaint management, Service quality, Library

Recovery: What does this mean to patients with low back pain?

Copyright © 2009, American College of Rheumatology. This article is freely available through the publisher’s link below.Objective - To explore patients' perceptions of recovery from low back pain, about which little is known. Methods - A qualitative study was conducted in which 36 participants, either recovered or unrecovered from low back pain, participated in focus groups. Interviews were audiorecorded and transcribed verbatim. Framework analysis was used to identify emergent themes and domains of recovery. Results - Patients' views of recovery encompassed a range of factors that can be broadly classified into the domains of symptom attenuation, improved capacity to perform a broad scope of self-defined functional activities, and achievement of an acceptable quality of life. An interactive model is proposed to describe the relationships between these domains, cognitive appraisal of the pain experience, and self-rated recovery. Pain attenuation alone was not a reliable indicator of recovery. Conclusion - The construct of recovery for typical back pain patients seeking primary care is more complex than previously recognized and is a highly individual construct, determined by appraisal of the impact of symptoms on daily functional activities as well as quality of life factors. These findings will be valuable for reassessing how to optimize measures of recovery from low back pain by addressing the spectrum of factors patients consider meaningful

Determining optimal disassembly and recovery strategies

We present a stochastic dynamic programming algorithm fordetermining the optimal disassembly and recovery strategy, giventhe disassembly tree, the process dependent quality distributionsof assemblies, and the quality dependent recovery options andassociated profits for assemblies. This algorithm generalizes theone proposed by Krikke et al. \\cite{Krikke98} in two ways. First,there can be multiple disassembly processes. Second, partialdisassembly is allowed. Both generalizations are important forpractise.

Race to the Top: Colorado May Be Used to High Altitudes But Can It Compete in Race to the Top?

Outlines expected requirements for the American Recovery and Reinvestment Act's funding to the states for education reform. Offers strategies for improving teacher quality in Colorado, as well as data infrastructure, low-performing schools, and standards

Service recovery's impact on customers next-in-line

Purpose - Previous research considers service recovery as a one-on-one interaction between a service provider and a complaining customer. However, customers frequently complain at the place where they receive the service, making an investigation of the impact of a service recovery on observing customers necessary. Using observational learning theory and attribution theory as theoretical anchors, this paper examines whether observing a service recovery influences the observing customers' satisfaction and repurchase intentions. In addition, this paper tests whether service quality perceptions mediate, and customers' locus of control attributions moderate these relationships. Design/methodology/approach - Study 1 tests the main hypothesis using a scenario-based experiment in two settings (restaurant, retail). Study 2 further elaborates on these findings using a scenario-based experiment in a hotel setting. Findings - The findings show that the negative consequences of a failed recovery extend beyond the complaining customers to observing customers, whereas the positive consequences of observing a satisfactory recovery do not influence the observing customer when compared to observing a failure-free service delivery. These relationships are driven by the service quality information customers extract from observing a service recovery. In addition, the results indicate that the negative spill-over effects are attenuated if the observing customer gets information about who caused the failure. Originality/value - From a theoretical point of view, this study contributes by outlining service recovery's different impacts on complaining and observing customers: whereas service recovery forms a critical for complaining customers, it only acts as a dissatisfier for observing customers. In addition, it is the first to test a potential explanation for why observing a service recovery leads to lower customer outcomes, and provides insights about how service providers might attenuate the negative spill-over effects of a failed recovery

Thermocompression bonding produces efficient surface-barrier diode

Thermocompression bonding of a gold wire to a gallium-arsenide wafer produces a quality surface barrier diode with fast recovery times. The properties of this combination may be useful in semiconductor devices