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University of Pennsylvania (Wharton)
(265 results)-
White Papers
Updatable Security Views
April 29, 2009, 12:00am PDT
Security views are a flexible and effective mechanism for controlling access to confidential information. Rather than allowing untrusted users to access source data directly, they are instead...
Provided by University of Pennsylvania
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White Papers
Model Checking of Linearizability of Concurrent List Implementations
April 21, 2010, 12:00am PDT
Concurrent data structures with fine-grained synchronization are notoriously difficult to implement correctly. The difficulty of reasoning about these implementations does not stem from the number...
Provided by University of Pennsylvania
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White Papers
Languages of Nested Trees
January 1, 2011, 12:00am PST
The authors study languages of nested trees-structures obtained by augmenting trees with sets of nested jump-edges. These graphs can naturally model branching behaviors of push-down programs, so...
Provided by University of Pennsylvania
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White Papers
Algorithmic Analysis of Array-Accessing Programs
June 21, 2009, 12:00am PDT
For programs whose data variables range over boolean or nite domains, program verification is decidable, and this forms the basis of recent tools for software model checking. In this paper, the...
Provided by University of Pennsylvania
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White Papers
Expressiveness of Streaming String Transducers
October 13, 2010, 12:00am PDT
Streaming string transducers define (partial) functions from input strings to output strings. A streaming string transducer makes a single pass through the input string and uses a finite set of...
Provided by University of Pennsylvania
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White Papers
Spectrum Pricing Games With Spatial Reuse in Cognitive Radio Networks
January 15, 2011, 12:00am PST
In Cognitive Radio Networks (CRN), there are multiple primary and secondary users in a region, and primaries can lease out their unused bandwidth to secondaries in exchange for a fee. This gives...
Provided by University of Pennsylvania
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White Papers
Differential Privacy Under Fire
June 7, 2011, 12:00am PDT
Anonymizing private data before release is not enough to reliably protect privacy, as Netflix and AOL have learned to their cost. Recent research on differential privacy opens a way to obtain...
Provided by University of Pennsylvania
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White Papers
Generic Coverage Verification Without Location Information Using Dimension Reduction
February 5, 2009, 12:00am PST
Wireless Sensor Networks (WSNs) have recently emerged as a key sensing technology with diverse civilian and military applications. In these networks, a large number of small sensors or nodes...
Provided by University of Pennsylvania
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White Papers
On the Security Cost of Interval Multicast
May 1, 2010, 12:00am PDT
Interval multicast was defined as to send a message to a subset of a group, rather than all of the members in the group, which is important in battle fields and other applications. A Key-Tree...
Provided by University of Pennsylvania
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White Papers
Cologne: A Declarative Distributed Constraint Optimization Platform
March 24, 2012, 12:00am PDT
This paper presents Cologne, a declarative optimization platform that enables Constraint Optimization Problems (COPs) to be declaratively specified and incrementally executed in distributed...
Provided by University of Pennsylvania
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White Papers
Virtual Switching Without a Hypervisor for a More Secure Cloud
January 23, 2012, 12:00am PST
Cloud computing leverages virtualization to offer resources on demand to multiple "Tenants". However, sharing the server and network infrastructure creates new vulnerabilities, where one tenant...
Provided by University of Pennsylvania
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White Papers
Rehoming Edge Links for Better Traffic Engineering
March 13, 2012, 12:00am PDT
Traditional traffic engineering adapts the routing of traffic within the network to maximize performance. The authors propose a new approach that also adaptively changes where traffic enters and...
Provided by University of Pennsylvania
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White Papers
Step-Indexed Normalization for a Language With General Recursion
December 16, 2011, 12:00am PST
The TRELLYS project has produced several designs for practical dependently typed languages. These languages are broken into two fragments - a logical fragment where every term normalizes and which...
Provided by University of Pennsylvania
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White Papers
Irrelevance, Heterogeneous Equality, and Call-by-Value Dependent Type Systems
February 7, 2012, 12:00am PST
The authors present a full-spectrum dependently typed core language which includes both non-termination and computational irrelevance (a.k.a. erasure), a combination which has not been studied...
Provided by University of Pennsylvania
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Whitepapers
TROPIC: Transactional Resource Orchestration Platform in the Cloud
May 14, 2012, 12:00am PDT
Realizing Infrastructure-as-a-Service (IaaS) cloud requires a control platform to orchestrate cloud resource provisioning, configuration, and decommissioning across a distributed set of diverse...
Provided by University of Pennsylvania
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Whitepapers
On the Adoption Paths and Competition of Network Applications
April 29, 2010, 12:00am PDT
Much of the growth of the Internet has been driven by new network technologies and applications. The successful adoption of theses applications greatly depend on the underlying diffusion process...
Provided by University of Pennsylvania
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White Papers
Reasoning About Keys for XML
October 19, 2008, 12:00am PDT
This paper studies absolute and relative keys for XML, and investigates their associated decision problems. It is argued that these keys are important to many forms of hierarchically structured...
Provided by University of Pennsylvania
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White Papers
Validating Constraints in XML
October 20, 2008, 12:00am PDT
The role of XML in data exchange is evolving from one of merely conveying the structure of data to one that also conveys its semantics. In particular, several proposals for key and foreign key...
Provided by University of Pennsylvania
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White Papers
Querying XML With Mixed and Redundant Storage
October 18, 2008, 12:00am PDT
This paper examines some of the issues that arise in the process of XML publishing of mixed-storage proprietary data. It is argued that such data will reside typically in RDBMS's and/or LDAP, etc,...
Provided by University of Pennsylvania
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White Papers
Using XQuery to Build Updatable XML Views Over Relational Databases
October 18, 2008, 12:00am PDT
XML has become an important medium for data exchange, and is frequently used as an interface to - i.e. a view of - a relational database. Although much attention has been paid to the problem of...
Provided by University of Pennsylvania
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White Papers
Reasoning About the Updatability of XML Views Over Relational Databases
October 22, 2008, 12:00am PDT
XML has become an important medium for data exchange, and is also used as an interface to - i.e. a view of - a relational database. While previous work has considered XML views for the purpose of...
Provided by University of Pennsylvania
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White Papers
SilkRoute: Trading Between Relations and XML
January 1, 2008, 12:00am PST
XML is the standard format for data exchange between inter-enterprise applications on the Internet. To facilitate data exchange, industry groups define public Document Type Definitions (DTDs) that...
Provided by University of Pennsylvania
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White Papers
XML Vectorization: A Column-Based XML Storage Model
October 20, 2008, 12:00am PDT
The usual method for storing tables in a relational database is to store each tuple contiguously in secondary storage. A simple alternative is to store the columns contiguously, so that a table is...
Provided by University of Pennsylvania
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White Papers
Sub-Operating Systems: A New Approach to Application Security
January 1, 2008, 12:00am PST
Users regularly exchange apparently innocuous data files using email and ftp. While the users view these data as passive, there are situations when they are interpreted as code by some system...
Provided by University of Pennsylvania
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White Papers
The Art Of Making Quality Decisions
December 11, 2008, 12:00am PST
It's challenge enough for individuals to make decisions about things they know a lot about. It's even tougher for them to make decisions in the face of uncertainty or when the information...
Provided by University of Pennsylvania
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White Papers
Double Down: Stepping Up Investment In Innovation
March 1, 2009, 12:00am PST
Despite the economic downturn, now is not the time to save money by spending less on innovation. "Innovation is a tough sell in a recession," says Wharton Professor of Marketing George S. Day,...
Provided by University of Pennsylvania (Wharton)
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White Papers
Constructive Confrontation: When Conflict Enhances Collaboration
March 1, 2008, 12:00am PST
Richard Shell, academic co-director at Wharton, leads two popular programs that address different aspects of collaboration and confrontation. Strategic Persuasion Workshop: The Art and Science of...
Provided by University of Pennsylvania (Wharton)
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White Papers
Holding On To your Place At The Top: Maintaining Competitive Advantage
January 1, 2010, 12:00am PST
When Progressive Insurance began providing quotes for its competitors' policies to potential customers, many in the industry scoffed. The move seemed counterintuitive for a company driven to...
Provided by University of Pennsylvania (Wharton)
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White Papers
When Are Emerging Markets No Longer 'Emerging'?
April 10, 2009, 12:00am PDT
Call them the darlings of the global market - the economies of India, China and Brazil have exploded in recent years, igniting both business opportunities and challenges. These countries are...
Provided by University of Pennsylvania (Wharton)
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White Papers
The New M&A: Managing Acquisitions As Alliances
February 1, 2010, 12:00am PST
With growing frequency, cross-border mergers and acquisitions are making the news, offering plentiful examples of success (Ûlker and Godiva) and failure (Daimler and Chrysler). What many of the...
Provided by University of Pennsylvania (Wharton)
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White Papers
Connecting In Chaos: Persuasion And Negotiation For Turbulent Times
September 1, 2008, 12:00am PDT
After JPMorgan Chase took over Bear Stearns in March, Morgan CEO Jamie Diamond made a trip uptown to talk to the top executives of the acquired firm. The executives had just been through one of...
Provided by University of Pennsylvania (Wharton)
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White Papers
On the Feasibility and Efficacy of Protection Routing in IP Networks
December 18, 2009, 12:00am PST
The protection routing procedures in IP networks has become a matter of great research and improvement owing to the growing demands of the resources available on the internet. Some of the major...
Provided by University of Pennsylvania
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White Papers
Optimal Quarantining of Wireless Malware Through Power Control
February 10, 2009, 12:00am PST
The topic of malware propagation in mobile wireless networks is gaining momentum among the research community, as actual vulnerabilities are revealed through recent outbreaks of worms. The paper...
Provided by University of Pennsylvania
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White Papers
Optimal Malware Attack and Defense in Mobile Wireless Networks
January 22, 2010, 12:00am PST
Malicious self-replicating codes, known as malware, pose substantial threat to the wireless computing infrastructure. Malware can be used to launch attacks that vary from the less intrusive...
Provided by University of Pennsylvania
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White Papers
Dynamic Malware Attack in Energy-Constrained Mobile Wireless Networks
January 31, 2010, 12:00am PST
Large scale proliferation of wireless technologies are dependent on developing reliable security measures against outbreaks of malware. The first step toward this goal is investigating the...
Provided by University of Pennsylvania
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White Papers
Seventh Amendment: Sarbanes-Oxley Act Whistleblower Claims and Jury Trials
July 1, 2009, 12:00am PDT
In the early part of the twenty-first century, corporate fraud and greed led to the downfall of two major multinational corporations, Enron and WorldCom. Corporate scandals caught the attention of...
Provided by University of Pennsylvania
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White Papers
Changes in Bonus Contracts in the Post-Sarbanes-Oxley Era
November 20, 2007, 12:00am PST
This paper examine whether the relation between earnings and bonuses changes after Sarbanes-Oxley. Theory predicts that, as the financial reporting system reduces the discretion allowed managers,...
Provided by University of Pennsylvania
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White Papers
The Social Life of Wireless Urban Spaces: Internet Use, Social Networks, and the Public Realm
April 20, 2009, 12:00am PDT
Offlate changes to the structure of people's social networks, the mass media, and urban public spaces may represent a confluence of social trends that constrain exposure to diverse issues, ideas,...
Provided by University of Pennsylvania
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White Papers
Maximum Damage Malware Attack in Mobile Wireless Networks
August 1, 2009, 12:00am PDT
Malware attacks constitute a serious security risk that threatens to slow down the large scale proliferation of wireless applications. As a first step towards thwarting this security threat, one...
Provided by University of Pennsylvania
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White Papers
Trace-Driven Analysis of an Internet-Scale Cloud Computing Platform
May 6, 2008, 12:00am PDT
In recent years, cloud computing have become a popular computing paradigm, where computation is moved away from personal computers or an individual application server to a "Cloud" of computers in...
Provided by University of Pennsylvania
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White Papers
The Art Of Making Quality Decisions
December 11, 2008, 12:00am PST
It's challenge enough for individuals to make decisions about things they know a lot about. It's even tougher for them to make decisions in the face of uncertainty or when the information...
Provided by University of Pennsylvania
-
White Papers
Sub-Operating Systems: A New Approach to Application Security
January 1, 2008, 12:00am PST
Users regularly exchange apparently innocuous data files using email and ftp. While the users view these data as passive, there are situations when they are interpreted as code by some system...
Provided by University of Pennsylvania
-
White Papers
XML Vectorization: A Column-Based XML Storage Model
October 20, 2008, 12:00am PDT
The usual method for storing tables in a relational database is to store each tuple contiguously in secondary storage. A simple alternative is to store the columns contiguously, so that a table is...
Provided by University of Pennsylvania
-
White Papers
SilkRoute: Trading Between Relations and XML
January 1, 2008, 12:00am PST
XML is the standard format for data exchange between inter-enterprise applications on the Internet. To facilitate data exchange, industry groups define public Document Type Definitions (DTDs) that...
Provided by University of Pennsylvania
-
White Papers
Reasoning About the Updatability of XML Views Over Relational Databases
October 22, 2008, 12:00am PDT
XML has become an important medium for data exchange, and is also used as an interface to - i.e. a view of - a relational database. While previous work has considered XML views for the purpose of...
Provided by University of Pennsylvania
-
White Papers
Using XQuery to Build Updatable XML Views Over Relational Databases
October 18, 2008, 12:00am PDT
XML has become an important medium for data exchange, and is frequently used as an interface to - i.e. a view of - a relational database. Although much attention has been paid to the problem of...
Provided by University of Pennsylvania
-
White Papers
Querying XML With Mixed and Redundant Storage
October 18, 2008, 12:00am PDT
This paper examines some of the issues that arise in the process of XML publishing of mixed-storage proprietary data. It is argued that such data will reside typically in RDBMS's and/or LDAP, etc,...
Provided by University of Pennsylvania
-
White Papers
Validating Constraints in XML
October 20, 2008, 12:00am PDT
The role of XML in data exchange is evolving from one of merely conveying the structure of data to one that also conveys its semantics. In particular, several proposals for key and foreign key...
Provided by University of Pennsylvania
-
White Papers
Reasoning About Keys for XML
October 19, 2008, 12:00am PDT
This paper studies absolute and relative keys for XML, and investigates their associated decision problems. It is argued that these keys are important to many forms of hierarchically structured...
Provided by University of Pennsylvania
-
White Papers
AntiECN Marking: A Marking Scheme for High Bandwidth Delay Connections
January 1, 2008, 12:00am PST
This paper describes a simple scheme that uses feedback from underutilized high capacity links to allow a TCP connection to aggressively increase its sending rate. The feedback is in the form of a...
Provided by University of Pennsylvania
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