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University of Southern California
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Volunteerism: Leaders? Attitudes, Thoughts And Behaviors.
June 1, 2007, 12:00am PDT
The focus of the current Leadership Pulse was volunteerism at work. Although there was much enthusiasm from a core group of leaders with whom the author works to study this topic, it did not seem...
Provided by University of Southern California
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Why HR Practices Are Not Evidence-Based
July 1, 2007, 12:00am PDT
The difference between the academic literature and the practitioner literature on human resource management is an indicator and one cause of the major separation that exists between research and...
Provided by University of Southern California
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Measuring And Maximizing The Business Impact Of Executive Coaching
December 22, 2008, 12:00am PST
This paper addresses the conceptual and methodological issues involved in measuring the business impact of executive coaching. A framework is introduced for identifying the business impacts of...
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The People Paradox: A Study Of Future Growth Opportunities
September 24, 2007, 12:00am PDT
In business we are always looking for leading indicators, numbers that predict whether the stock market is going up or down and whether growth is on the horizon - all to help us make important...
Provided by University of Southern California
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White Papers
Organizational Communication Networks
September 17, 2007, 12:00am PDT
Communication and other social networks have been the subject of considerable scholarship since the eighteenth century (Mattelart, 2000), but the past two decades have produced unprecedented...
Provided by University of Southern California
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Scheduling Algorithms for Tree-Based Data Collection in Wireless Sensor Networks
March 16, 2010, 12:00am PDT
Data collection is a fundamental operation in Wireless Sensor Networks (WSN) where sensor nodes measure attributes about a phenomenon of interest and transmit their readings to a common base...
Provided by University of Southern California
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Household Location And Race: A Twenty-Year Retrospective
February 3, 2011, 12:00am PST
In a paper published in The Review of Economics and Statistics some 20 years ago, the authors sought to assess the disparate residential location choices of black and white households in the...
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Travel Behavior Among Latino Immigrants: The Role Of Ethnic Neighborhoods And Ethnic Employment
November 24, 2010, 12:00am PST
This paper examines evidence concerning Latino immigrants' travel mode choices among auto alone, carpool, transit and other from six different immigrant gateways: Atlanta, Chicago, Denver, Los...
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Is The 'Shop Around The Corner' A Luxury Or A Nuisance? The Relationship Between Income And Neighborhood Retail Patterns
September 22, 2010, 12:00am PDT
Affluent neighborhoods present a potentially attractive location for retail establishments because of their higher purchasing power and demand for a wide range of specialized goods and services....
Provided by University of Southern California
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Immigrant Settlement And Employment Suburbanization: Is There A Spatial Mismatch?
June 9, 2010, 12:00am PDT
Two significant trends have occurred in urban areas across the United States during the last decade: immigration and the decentralization of employment. While each trend has been investigated by...
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Urban Structure: Its Role In Urban Growth, Net New Business Formation And Industrial Churn
June 8, 2010, 12:00am PDT
Cities are the "Engines of growth" because entrepreneurial and creative activities are concentrated in cities. This suggests that cities grow by hosting new businesses and "Churning" industries...
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Urban Structure And Economic Growth
February 24, 2010, 12:00am PST
In this paper, the authors survey recent work in urban economics and suggest that its challenge is to explain how entrepreneurs and others can be spatially poised to succeed. Just as Douglass...
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Demographic Forces And Turning Points In The American City, 1950-2040
November 1, 2009, 12:00am PDT
This paper focus on long swings in population structure that alter demands on the built environment in systematic ways. In some periods, the population factor that is most of importance is the...
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Silver Bullet Or Trojan Horse? The Effects Of Inclusionary Zoning On Local Housing Markets
October 2, 2009, 12:00am PDT
Many local governments are adopting Inclusionary Zoning (IZ) as a means of producing affordable housing without direct public subsidies. In this paper, the authors use panel data on IZ in the San...
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The Rise And Fall Of Fannie Mae And Freddie Mac: Lessons Learned And Options For Reform
November 19, 2009, 12:00am PST
Not so long ago, the US housing finance system was arguably the best in the world. Consumers had access to products that were not available elsewhere, and the market was able to sustain major...
Provided by University of Southern California
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Immigrants And Housing Markets In Mid-Size Metropolitan Areas
May 13, 2009, 12:00am PDT
The recent trend of immigrants arriving in mid-size metropolitan areas has received growing attention in the literature. This paper examines the success of immigrants in the housing markets of a...
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Is Public Space A Public Good? A Structure/Agency View Of The 'Narrative Of Loss'
September 24, 2008, 12:00am PDT
Public space is examined from the perspective of economic goods, defined by 'Rivalness' and 'Excludability', to explain the reasons for the 'Narrative of loss' through this framework. The...
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REITs Return Behavior And Legal Infrastructure: The 1993 Revenue Reconciliation Act And Inspirations For China's Emerging REITs Market
May 14, 2008, 12:00am PDT
REIT is an important but complex financial innovation. The next decade is likely to see the emergence and fast development of REITs market in China. The development of a sound legal and regulatory...
Provided by University of Southern California
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Housing Tenure Transitions Of Older Households: Life Cycle, Demographic, And Familial Factors
July 1, 2008, 12:00am PDT
Understanding the housing choices of the older households will grow in importance as the baby boom generation starts to retire. This proposed analysis utilizes a rich longitudinal data set (PSID)...
Provided by University of Southern California
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Ethnic Enclave Residence And Employment Accessibility Of Latino Workers In Chicago, Los Angeles And Washington, D.C.
February 1, 2008, 12:00am PST
This paper examines the impact of living in ethnic enclaves in different parts of the metropolitan area on low-skilled Latino immigrants' employment accessibility. It does so by comparing the...
Provided by University of Southern California
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Economic Redevelopment And The Community Benefits Program: A Case Study Of The L.A. Live Project, A Los Angeles Sports And Entertainment District
June 30, 2007, 12:00am PDT
Research on communities measuring opposition to development has found that immigrants with lower income and educational levels, and racial minorities, tend to offer less resistance. Unions are...
Provided by University of Southern California
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Hangout: A Privacy Preserving Location Based Social Networking Service
April 7, 2008, 12:00am PDT
As mobile devices enter a new era with high speed connectivity and increasing compute capabilities a new class of applications called social networking applications is being showcased as the next...
Provided by University of Southern California
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Challenges in Security for Cyber-Physical Systems
July 10, 2009, 12:00am PDT
The design of security for cyber-physical systems must take into account several characteristics common to such systems. Among these are feedback between the cyber and physical environment,...
Provided by University of Southern California
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White Papers
Neighborhood-Centric Congestion Control for Multi-Hop Wireless Mesh Networks
October 27, 2009, 12:00am PDT
Complex interference in static multi-hop wireless mesh networks can adversely affect transport protocol performance. Since TCP does not explicitly account for this, starvation and unfairness can...
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The Achievable Rate Region of 802.11-Scheduled Multi-Hop Networks
October 1, 2008, 12:00am PDT
This paper characterizes the achievable rate region for any 802.11-scheduled static multi-hop network. To do so, the authors first characterize the achievable edge-rate region, that is, the set of...
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Fundamental Mobility Properties for Realistic Performance Analysis of Intermittently Connected Mobile Networks
June 5, 2007, 12:00am PDT
Traditional mobile ad hoc routing protocols fail to deliver any data in Intermittently Connected Mobile Ad Hoc Networks (ICMN's) because of the absence of complete end-to-end paths in these...
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Architecture and Performance Evaluation for P2P Application in 3G Mobile Cellular Systems
June 15, 2007, 12:00am PDT
A novel Mobile Peer-To-Peer (MP2P) in cellular networks is presented in this paper. The proposed architecture is based on Session Initiation Protocol (SIP) that is part of the IP Multimedia...
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Analyzing Self-Defense Investments in Internet Security Under Cyber-Insurance Coverage
March 26, 2010, 12:00am PDT
Internet users such as individuals and organizations are subject to different types of epidemic risks such as worms, viruses, and botnets. To reduce the probability of risk, an Internet user...
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Model Interpreter Frameworks: A Foundation for the Analysis of Domain-Specific Software Architectures
November 15, 2007, 12:00am PST
Prediction of the quality attributes of software architectures requires technologies that enable the application of analytic theories to component models. However, available analytic techniques...
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A Framework for Estimating the Impact of a Distributed Software System's Architectural Style on Its Energy Consumption
December 6, 2007, 12:00am PST
The selection of an architectural style for a given software system is an important factor in satisfying its quality requirements. In battery-powered environments, such as mobile and pervasive...
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An Energy Consumption Framework for Distributed Java-Based Systems
June 11, 2007, 12:00am PDT
In this paper the authors define and evaluate a framework for estimating the energy consumption of Java-based software systems. The primary objective in devising the framework is to enable an...
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Self- Software Architectures and Component Middleware in Pervasive Environments
September 10, 2007, 12:00am PDT
Software systems that execute in embedded and pervasive environments are frequently required to be self-monitoring, self-adapting, and self-healing. However, supporting these self-capabilities in...
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A Framework for Estimating the Energy Consumption Induced by a Distributed System's Architectural Style
June 24, 2009, 12:00am PDT
The architectural style used in a software system is an important factor in satisfying its quality requirements. In battery-powered environments, such as mobile and pervasive systems, efficiency...
Provided by University of Southern California
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The Role Of Exports In The Economy Of Colonial North America: New Estimates For The Middle Colonies
September 23, 2008, 12:00am PDT
Economic historians of the eighteenth-century British mainland North American colonies have given considerable weight to the role of exports as a stimulus for economic growth. Yet their analyses...
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On the Economics of Cloud Markets
February 28, 2011, 12:00am PST
Cloud computing is a paradigm that has the potential to transform and revolutionalize the next generation IT industry by making software available to end-users as a service. A cloud, also commonly...
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Optimal Power Cost Management Using Stored Energy in Data Centers
March 19, 2011, 12:00am PDT
Since the electricity bill of a data center constitutes a significant portion of its overall operational costs, reducing this has become important. The authors investigate cost reduction...
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Distributed Storage Codes Meet Multiple-Access Wiretap Channels
October 4, 2010, 12:00am PDT
The authors consider the overhead minimization of Maximum-Distance Separable (MDS) storage codes for the repair of a single failed node and the total Secure Degrees-of-Freedom (S-DoF) maximization...
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Semiautomatic Registration Between Ground-Level Panoramas and an Orthorectified Aerial Image for Building Modeling
August 1, 2007, 12:00am PDT
Aerial imagery and ground-level imagery are two complementary data sources for architectural modeling. How to integrate them is a critical issue in creating complete, photo-realistic and...
Provided by University of Southern California
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Structure of Heterogeneous Networks
June 11, 2009, 12:00am PDT
Heterogeneous networks play a key role in the evolution of communities and the decisions individuals make. These networks link different types of entities, for example, people and the events they...
Provided by University of Southern California
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Encounter-Based Worms: Analysis and Defense
June 17, 2007, 12:00am PDT
Encounter-based network is a frequently-disconnected wireless ad-hoc network requiring immediate neighbors to store and forward aggregated data for information disseminations. Using traditional...
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Delay Efficient Scheduling Via Redundant Constraints in Multihop Networks
April 27, 2010, 12:00am PDT
The authors consider the problem of delay-efficient scheduling in general multi-hop networks. While the class of max-weight type algorithms is known to be throughput optimal for this problem, they...
Provided by University of Southern California
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Intelligent Packet Dropping for Optimal Energy-Delay Tradeoffs in Wireless Downlinks
March 1, 2009, 12:00am PST
The authors explore the advantages of intelligently dropping a small fraction of packets that arrive for transmission over a time varying wireless downlink. Without packet dropping, the optimal...
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Stochastic Network Optimization With Non-Convex Utilities and Costs
February 1, 2010, 12:00am PST
This paper considers non-convex optimization of time averages of network attributes in a general stochastic network. This includes maximizing a non-concave utility function of the time average...
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Opportunistic Scheduling With Worst Case Delay Guarantees in Single and Multi-Hop Networks
January 22, 2011, 12:00am PST
The authors first consider a multi-user, single-hop wireless network with arbitrarily varying (and possibly non-ergodic) arrivals and channels. They design an opportunistic scheduling algorithm...
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LIFO-Backpressure Achieves Near Optimal Utility-Delay Tradeoff
March 28, 2011, 12:00am PDT
Recent developments in stochastic network optimization theory have yielded a very general framework that solves a large class of networking problems of the following form: the authors are given a...
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Delay-Based Network Utility Maximization
March 1, 2010, 12:00am PST
It is well known that max-weight policies based on a queue backlog index can be used to stabilize stochastic networks, and that similar stability results hold if a delay index is used. Using...
Provided by University of Southern California
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An Easily Deployable Wireless Imaging System
October 14, 2008, 12:00am PDT
The authors report on the development and deployment of a wireless, image-based environmental monitoring system. Their system uses low-power Cyclops cameras and the Tenet general-purpose sensing...
Provided by University of Southern California
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Online Anomaly Detection for Sensor Systems: A Simple and Efficient Approach
August 5, 2010, 12:00am PDT
Wireless sensor systems aid scientific studies by instrumenting the real world and collecting measurements. Given the large volume of measurements collected by sensor systems, one problem arises -...
Provided by University of Southern California
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Towards Autonomous Wireless Backbone Deployment in Highly-Obstructed Environments
February 8, 2011, 12:00am PST
In a setting that lacks infrastructure e.g., urban search and rescue, a team of networked mobile robots can provide a communication substrate by acting as routers in a wireless mesh network. The...
Provided by University of Southern California
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Optimizing Information Credibility in Social Swarming Applications
January 29, 2011, 12:00am PST
With the advent of smartphone technology, it has become possible to conceive of entirely new classes of applications. Social swarming, in which users armed with smartphones are directed by a...
Provided by University of Southern California
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Decentralized Online Learning Algorithms for Opportunistic Spectrum Access
July 31, 2011, 12:00am PDT
The fundamental problem of multiple secondary users contending for opportunistic spectrum access over multiple channels in cognitive radio networks has been formulated recently as a Decentralized...
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A Programmable Wireless Sensing System for Structural Monitoring
January 1, 2011, 12:00am PST
Recent work has examined the design of Wireless Sensor Network (WSN) systems for Structural Health Monitoring (SHM). Wireless sensors enable dense monitoring of large physical structures and...
Provided by University of Southern California
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The Application of Cloud Computing to Astronomy: A Study of Cost and Performance
October 22, 2010, 12:00am PDT
Cloud computing is a powerful new technology that is widely used in the business world. Recently, the authors have been investigating the benefits it offers to scientific computing. They have used...
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VGES: The Next Generation of Virtualized Grid Resource Provisioning
August 6, 2007, 12:00am PDT
New science in many important disciplines now requires complex, time-dependent access to distributed computing resources. The authors addresses these problems by creating a higher level resource...
Provided by University of Southern California
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Multi-Dimensional SLA-Based Resource Allocation for Multi-Tier Cloud Computing Systems
May 1, 2011, 12:00am PDT
With increasing demand for computing and memory, distributed computing systems have attracted a lot of attention. Resource allocation is one of the most important challenges in the distributed...
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Practical Dynamic Interference Management in Multi-Carrier Multi-Cell Wireless Networks: A Reference User Based Approach
July 19, 2010, 12:00am PDT
In order to overcome low performance of conventional static interference management algorithms and high complexity of existing dynamic interference management algorithms, this paper proposes an...
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Performance of a Propagation Delay Tolerant ALOHA Protocol for Underwater Wireless Networks
November 20, 2007, 12:00am PST
The authors analyze a Propagation Delay Tolerant ALOHA (PDT-ALOHA) protocol proposed recently for underwater networks. In this scheme, guard-bands are introduced at each slot to reduce collisions...
Provided by University of Southern California
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Optimal Location of Feedback Handler Under Receiver Contention Schemes for Routing in Wireless Networks
August 24, 2007, 12:00am PDT
Due to the broadcast and error prone nature of wireless medium, novel routing mechanisms based on receiver contention have been proposed recently. The intuition of this strategy is, transmitters...
Provided by University of Southern California
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Making Distributed Rate Control Using Lyapunov Drifts a Reality in Wireless Sensor Networks
February 27, 2008, 12:00am PST
The authors take a top-down approach of formulating the rate control problem, over a collection tree, in a wireless sensor network as a generic convex optimization problem and propose a...
Provided by University of Southern California
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Joint Rate-Routing Control for Fair and Efficient Data Gathering in Wireless Sensor Networks
March 18, 2010, 12:00am PDT
In wireless sensor networks, fair and efficient rate allocation is an essential mechanism to avoid congestion collapse and system degradation. While most prior work in this context has focused on...
Provided by University of Southern California
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Energy-Efficient Graph-Based Wavelets for Distributed Coding in Wireless Sensor Networks
March 24, 2009, 12:00am PDT
This paper presents a class of unidirectional lifting-based wavelet transforms for an arbitrary communication graph in a wireless sensor network. These transforms are unidirectional in the sense...
Provided by University of Southern California
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Fast Flooding Using Cooperative Transmissions in Wireless Networks
February 28, 2009, 12:00am PST
Physical layer cooperation can be a powerful tool for enhancing the performance of multi-hop wireless networks. In this paper, the authors analyze the time to complete a cooperative broadcast to...
Provided by University of Southern California
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Feasibility of the Receiver Capacity Model for Multi-Hop Wireless Networks
May 20, 2009, 12:00am PDT
The receiver capacity model is a simple model to capture flow dynamics in a multi-hop wireless network, by presenting linear constraints to define the feasible rate region of the network, taking...
Provided by University of Southern California
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Delay Constrained Minimum Energy Broadcast in Cooperative Wireless Networks
January 26, 2011, 12:00am PST
The authors formulate the problem of delay constrained energy-efficient broadcast in cooperative multihop wireless networks. The authors show that this important problem is not only NP-complete,...
Provided by University of Southern California
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Underwater Sensor Networking: Research Challenges and Potential Applications
January 1, 2011, 12:00am PST
This paper summarizes the authors' research directions in underwater sensor networks. They highlight potential applications to off-shore oilfields for seismic monitoring, equipment monitoring, and...
Provided by University of Southern California
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Perspectives on Quality of Experience for Video Streaming Over WiMAX
November 15, 2009, 12:00am PST
The advent of broadband wireless networks, such as WiMAX, is paving the way for the widespread deployment of high-bandwidth video streaming services for mobile users. To provide acceptable...
Provided by University of Southern California
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Multi-Channel Scheduling and Spanning Trees: Throughput-Delay Trade-Off for Fast Data Collection in Sensor Networks
December 3, 2010, 12:00am PST
The authors investigate the trade-off between two mutually conflicting performance objectives - throughput and delay - for fast, periodic data collection in tree-based sensor networks arbitrarily...
Provided by University of Southern California
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On Using Cloud Platforms in a Software Architecture for Smart Energy Grids
November 15, 2010, 12:00am PST
Increasing concern about energy consumption is leading to infrastructure that continuously monitors consumer energy usage and allow power utilities to provide dynamic feedback to curtail peak...
Provided by University of Southern California
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Corporate Governance In The Recent Financial Crisis: Evidence From Financial Institutions Worldwide
July 1, 2009, 12:00am PDT
This paper investigates the role of corporate governance in the current financial crisis using a unique dataset of 306 global financial firms across 31 countries that were at the center of the...
Provided by University of Southern California
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Efficient Identification of Uncongested Internet Links for Topology Downscaling
October 1, 2007, 12:00am PDT
It has been recently suggested that uncongested links could be completely ignored when evaluating Internet's performance. In particular, based on the observation that only the congested links...
Provided by University of Southern California
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Effect of Malicious Traffic on the Network
January 1, 2011, 12:00am PST
The Internet has seen, in recent days, a continuous rise in malicious traffic including DDoS and worm attacks. In this paper, the authors study the effect of malicious traffic on the background...
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A Measurement Study of Correlations of Internet Flow Characteristics
January 1, 2011, 12:00am PST
Previous studies of Internet traffic have shown that a very small percentage of flows consume most of the network bandwidth. It is important to understand the characteristics of such flows for...
Provided by University of Southern California
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Cooperation and Coordination in Cognitive Networks With Packet Retransmission
July 30, 2009, 12:00am PDT
The cognitive framework, which fosters an efficient use of the channel resource by granting access to smart and adaptive terminals, has been recently integrated with the cooperative paradigm....
Provided by University of Southern California
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Cognitive Interference Management in Retransmission-Based Wireless Networks
October 2, 2009, 12:00am PDT
Cognitive radio methodologies have the potential to dramatically increase the throughput of wireless systems. Herein, control strategies which enable the superposition in time and frequency of...
Provided by University of Southern California
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Identifying Dynamic Network Modules With Temporal and Spatial Constraints
September 23, 2008, 12:00am PDT
Despite the rapid accumulation of systems-level biological data, understanding the dynamic nature of cellular activity remains a difficult task. The reason is that most biological data are static,...
Provided by University of Southern California
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Private Information Retrieval Techniques for Enabling Location Privacy in Location-Based Services
May 15, 2009, 12:00am PDT
The ubiquity of smartphones and other location-aware hand-held devices has resulted in a dramatic increase in popularity of Location-Based Services (LBS) tailored to user locations. The comfort of...
Provided by University of Southern California
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A Robust Approach for Automatic Registration of Aerial Images With Untextured Aerial LiDAR Data
April 1, 2009, 12:00am PDT
Airborne LiDAR technology draws increasing interest in large-scale 3D urban modeling in recent years. 3D Li-DAR data typically has no texture information. To generate photo-realistic 3D models,...
Provided by University of Southern California
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Remote Detection of Bottleneck Links Using Spectral and Statistical Methods
September 26, 2008, 12:00am PDT
Persistently saturated links are abnormal conditions that indicate bottlenecks in Internet traffic. Network operators are interested in detecting such links for troubleshooting, to improve...
Provided by University of Southern California
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Selecting Representative IP Addresses for Internet Topology Studies
July 12, 2010, 12:00am PDT
An Internet hitlist is a set of addresses that cover and can represent the internet as a whole. Hitlists have long been used in studies of internet topology, reachability, and performance, serving...
Provided by University of Southern California
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Perfect Space-Time Codes for Any Number of Antennas
August 8, 2007, 12:00am PDT
In a recent paper, perfect (n x n) space-time codes were introduced as the class of linear dispersion space-time codes having full rate, non-vanishing determinant, a signal constellation...
Provided by University of Southern California
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