association for computing machinery Resources on ZDNet

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Association For Computing Machinery: See ACM.; Full Association For Computing Machinery Definition >>

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Efficient High Dynamic Range Texture Compression: This paper presents a novel compression method for High Dynamic Range HDR textures, targeted for future graphics hardware. Identifying that the existing solutions provide either very high image quality or very simple hardware implementation, it aims to achieve both features in a single solution. The authors approach improves upon an...; Tags: Image Quality, Association For Computing Machinery, Hardware; White papers 2008-02-01
FreePad: A Novel Handwriting-Based Text Input for Pen and Touch Interfaces: The last decade has seen tremendous growth in mobile devices such as Pocket PCs, mobile phones, Tablet PCs and notebooks. Most of these devices enable interaction through a stylus or touch interface, powered by Handwriting Recognition HWR capability. This paper proposes a novel input method that addresses some of the...; Tags: Solution, Handwriting, Association For Computing Machinery, Tablets, Pocket PC, Notebooks, Advertising & Promotion, Desktops, Hardware, Notebooks & Tablets, Handhelds, Marketing; White papers 2007-12-20
An Inquiry Into the Nature and Causes of the Wealth of Internet Miscreants: This paper studies an active underground economy which specializes in the commoditization of activities such as credit card fraud, identity theft, spamming, phishing, online credential theft, and the sale of compromised hosts. Using a seven month trace of logs collected from an active underground market operating on public Internet chat...; Tags: Credit Card, Association For Computing Machinery, Internet, Hacking, Identity Theft, Phishing, Sales Channel, Financial Services, Security, Spam And Phishing, Sales; White papers 2007-11-02
Formal Correctness of Conflict Detection for Firewalls: This paper describes the formalization of a correctness proof for a conflict detection algorithm for firewalls in the Coq Proof Assistant. First, it gives formal definitions in Coq of a firewall access rule and of an access request to a firewall. Formally, two rules are in conflict if there exists...; Tags: Association For Computing Machinery, Firewalls, Network Security, Security, Networking; White papers 2007-11-02
Singular Spectrum Analysis of Traffic Workload in a Large-Scale Wireless LAN: Network traffic load in an IEEE802.11 infrastructure arises from the superposition of traffic accessed by wireless clients associated with Access Points APs. An accurate characterization of these data can be beneficial in modelling network traffic and addressing a variety of problems including cover-age planning, resource reservation and network monitoring for...; Tags: LAN, Network, Traffic, WLAN, Association For Computing Machinery, Spectrum, Analysis, Access Point, Wireless, Wi-Fi; White papers 2007-10-26

On Optimal Probing for Delay and Loss Measurement: Packet delay and loss are two fundamental measures of performance. Using active probing to measure delay and loss typically involves sending Poisson probes, on the basis of the PASTA property Poisson Arrivals See Time Averages, which ensures that Poisson probing yields unbiased estimates. Recent work, however, has questioned the utility...; Tags: Measurement, Loss, Association For Computing Machinery, Performance Management, Human Resources, Workforce Management; White papers 2007-10-26
Network Monitoring Using Traffic Dispersion Graphs (TDGs): Monitoring network traffic and detecting unwanted applications has become a challenging problem, since many applications obfuscate their traffic using unregistered port numbers or payload encryption. Apart from some notable exceptions, most traffic monitoring tools use two types of approaches: keeping traffic statistics such as packet sizes and inter-arrivals, flow counts,...; Tags: Packet, Network, Network Traffic, Monitoring, Association For Computing Machinery, Network Monitoring; White papers 2007-10-26
Sinfonia: A New Paradigm for Building Scalable Distributed Systems: This paper proposes a new paradigm for building scalable distributed systems. One's approach does not require dealing with message-passing protocols - a major complication in existing distributed systems. Instead, developers just design and manipulate data structures within the service called Sinfonia. Sinfonia keeps data for applications on a set of...; Tags: Association For Computing Machinery, Distributed System, Sinfonia; White papers 2007-10-17
An Experimental Study on the Capture Effect in 802.11a Networks: In wireless networks, a frame collision does not necessarily result in all the simultaneously transmitted frames being lost. Depending on the relative signal power and the arrival timing of the involved frames, one frame can survive the collision and be successfully received by the receiver. Using the IEEE 802.11a wireless...; Tags: IEEE 802.11, Network, Frame, Collision, Association For Computing Machinery, Wireless Network, Wireless LANs, Wi-Fi, Wireless, Networking; White papers 2007-09-10
Blink: Advanced Display Multiplexing for Virtualized Applications: Providing untrusted applications with shared and safe access to modern display hardware is of increasing importance. The new display system, called Blink, safely multiplexes complex graphical content from multiple untrusted Virtual Machines onto a single Graphics Processing Unit GPU. Blink does not allow clients to program the GPU directly, but...; Tags: Processor, Association For Computing Machinery, JIT, Abstraction, Graphics, GPU, Quality, Business Operations; White papers 2007-09-06
A Wired-Wireless Testbed Architecture for Network Layer Experimentation Based on ORBIT and VINI: This paper presents an initial design of a global-scale wired wireless testbed and its prototyping based on the existing ORBIT and VINI testbeds. It allows researchers to define custom network topologies comprising both wired and wireless nodes and experimenting with new network and transport layer protocols in these networks. The...; Tags: Network, Association For Computing Machinery, Testbed, Wi-Fi, Networking, Wireless; White papers 2007-07-25
YouTube Traffic Characterization: A View From the Edge: This paper presents a traffic characterization study of the popular video sharing service, YouTube. Over a three month period the paper observed almost 25 million transactions between users on an edge network and YouTube, including more than 600,000 video downloads. The paper also monitored the globally popular videos over this...; Tags: YouTube Inc., Association For Computing Machinery, Video, Corporate Communications, Web 2.0, Marketing, Internet; White papers 2007-07-12
A Statistical Approach to Risk Mitigation in Computational Markets: This paper studies stochastic models to mitigate the risk of poor Quality-of-Service QoS in computational markets. Consumers who purchase services expect both price and performance guarantees. They need to predict future demand to budget for sustained performance despite price fluctuations. Conversely, providers need to estimate demand to price future usage....; Tags: QoS, Performance, Association For Computing Machinery, Performance Management, Human Resources, Workforce Management; White papers 2007-06-29
SeeDTV: Deployment-Time Validation for Wireless Sensor Networks: Deployment of a Wireless Sensor Network WSN system is a critical step because theoretical models and assumptions often differ from real environmental characteristics and performance at the deployment site. In addition, such systems are often located in areas that are difficult to reach or even inaccessible for certain periods of...; Tags: Network, Sensor, Association For Computing Machinery, Wi-Fi, Wireless; White papers 2007-06-26
Robust Node Localization for Wireless Sensor Networks: The node localization problem in Wireless Sensor Networks has received considerable attention, driven by the need to obtain a higher location accuracy without incurring a large, per node, cost (dollar cost, power consumption and form factor). Despite the efforts made, no system has emerged as a robust, practical, solution for...; Tags: Network, Sensor, Association For Computing Machinery, Wi-Fi, Wireless; White papers 2007-06-26
JouleSort: A Balanced Energy-Efficiency Benchmark: The energy efficiency of computer systems is an important concern in a variety of contexts. In data centers, reducing energy use improves operating cost, scalability, reliability, and other factors. For mobile devices, energy consumption directly affects functionality and usability. The paper proposes and motivates JouleSort, an external sort benchmark, for...; Tags: Data Center, Association For Computing Machinery, Data Centers, Productivity, Storage, Hardware, Data Management; White papers 2007-06-14
The Multicast Capacity of Large Multihop Wireless Networks: This paper considers wireless ad hoc networks with a large number of users. Subsets of users might be interested in identical information, and so the authors have a regime in which several multicast sessions may coexist. The paper first calculates an upper-bound on the achievable transmission rate per multicast flow...; Tags: Association For Computing Machinery, Networking; White papers 2007-06-13
Survivable Network Design With Degree or Order Constraints: This paper presents algorithmic and hardness results for network design problems with degree or order constraints. The paper first considers the SURVIVABLE NETWORK DESIGN problem with degree constraints on vertices: the objective is to find a minimum cost subgraph satisfying certain connectivity requirements as well as degree upper bounds on...; Tags: Network, Association For Computing Machinery, Network Design, Network Administration, Networking; White papers 2007-06-13
Accelerating Real-Time Shading With Reverse Reprojection Caching: Evaluating pixel shaders consumes a growing share of the computational budget for real-time applications. However, the significant temporal coherence in visible surface regions, lighting conditions, and camera location allows reusing computationally-intensive shading calculations between frames to achieve significant performance improvements at little degradation in visual quality. This paper investigates a...; Tags: Association For Computing Machinery, Camera, Performance Management, Human Resources, Workforce Management; White papers 2007-05-17
Subspace: Secure Cross-Domain Communication for Web Mashups: Combining data and code from third-party sources has enabled a new wave of web mashups that add creativity and functionality to web applications. However, browsers are poorly designed to pass data between domains, often forcing web developers to abandon security in the name of functionality. To address this deficiency, the...; Tags: Web, Association For Computing Machinery, Channel Management, Web Browsers, Marketing, Internet; White papers 2007-05-12