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IRT-FIT: SAS Macros for Fitting Item Response Theory (IRT) Models
White Papers Psychometrics has recently seen the development of complex measurement models to better represent test and item data. Item Response Theory (IRT), in particular, comprises a set of non-linear latent variable models that appear to have several...
[December 26, 2006, 0:00]
Models and Solutions for Radio Irregularity in Wireless Sensor Networks
White Papers This model is the first to bridge the discrepancy between spherical radio models used by simulators and the physical reality of radio signals. This paper investigates the impact of radio irregularity on wireless sensor networks.
[August 25, 2007, 1:00]
Models For Hire Vol.1 Screensaver
Downloads The lovely ladies in this line of Free Screensavers are real girls looking for work as models. Their experience varies from amateur to professional, but their sexy beauty is constant. Volume 1 features April, Kimberly and Leigh in various poses and...
[May 25, 2006, 8:59]
Models for Semantic Interoperability in Service-Oriented Architectures
White Papers Then it analyzes four basic models of semantic interoperability that differ in respect to their mapping between service descriptions and ontologies and in respect to where the evaluation of the integration logic is performed.
[March 29, 2007, 1:00]
TechNet Webcast: Building and Validating Advanced Mining Models With SQL Server 2008 Data Mining (Level 200)
White Papers One area will be of particular interest to the user who has progressed beyond simple models - there are new features for building many and varied models over common mining structures, and also for validating the accuracy of these models.
[March 24, 2008, 0:02]
Exploring the Informal Translation of OMT Object Models in B
White Papers Although OMT is now rarely used, much of the work is directly applicable to UML class models. This paper reports work carried out between 1997 and 2001. In this paper, a model was chosen from the OMT book and a B specification developed.
[February 22, 2005, 2:00]
Industry Models and ILOG Business Rule Management Systems, Part 2: Incorporate a BRMS
White Papers This is the second of two papers that focus on the use of IBM Industry Models and ILOG Business Rule Management System (BRMS) to structure the analysis, design, and deployment of business rules. The previous paper in this series referenced the IBM...
[February 12, 2009, 23:00]
Vista upgrades: A case of technology hobbled by business models?
Blog We've been hearing other rumblings of odd policies and behaviours with Vista upgrades - almost certainly a case of technology hobbled by business models. As we start to delve into the intruiging world of Vista upgrades, the following email arrives...
[February 6, 2007, 10:22]
Formal Proof From UML Models
White Papers This paper presents a practical approach to a formal analysis of UML-based models. This is achieved by an underlying formal representation in Z, which allows one to pose and discharge conjectures to analyse models.
[February 22, 2005, 2:00]
Evolution of Charging and Billing Models for GSM and Future Mobile Internet Services
White Papers The methods for collecting the charging and billing information and charging models for processing this data into subscriber bills are discussed. A selection of proposed Internet charging models are applied to the mobile network market and their...
[November 10, 2005, 0:00]
Real-World Environment Models for Mobile Network Evaluation
White Papers To produce a real-world environment within which an ad hoc network can be formed among a set of nodes, there is a need for the development of realistic, generic and comprehensive mobility and signal propagation models.
[August 13, 2007, 8:20]
Intrusion Detection: Systems and Models
White Papers This paper puts forward a review of state of the art and state of the applicability of intrusion detection systems, and models. Organizations more often than not lack comprehensive security policies and are not adequately prepared to protect their...
[July 11, 2008, 1:20]
Protocol Design Beyond Graph-Based Models
White Papers This paper sheds new light on the fundamental gap between graph-based models used by protocol designers and fading channel models used by communication theorists in wireless networks. The paper experimentally demonstrates that graph-based models...
[May 25, 2007, 1:00]
Economic Models for Resource Management and Scheduling in Grid Computing
White Papers However, resource management, application development and usage models in these environments is a complex undertaking. The resource owners of each of these resources have different usage or access policies and cost models, and varying loads and...
[November 11, 2004, 2:00]
METAPERM2: A SAS Macro for Permutation Tests of Linear Models in Fixed and Random Effects Meta-Analyses
White Papers Permutation tests for linear models may provide a robust alternative to more traditional tests. This paper presents a SAS macro that calculates four permutation tests of regression weights in linear models applied to meta-analysis, as well as the...
[February 28, 2009, 0:26]
Palm models arrive with new OS
News Following through on a promise to add versatility to its product line, Palm on Monday is unveiling two slim new models that add a postage-size expansion slot. The two Palm models use a new type of connector that allows connection to a PC using...
[March 19, 2001, 8:28]
Towards Realistic Models of Wireless Workload
White Papers To redress this problem, it takes a fundamentally new approach to measuring the realism of wireless traffic models. This paper demonstrates that common experimental traffic models, such as uniform Constant Bit-Rate traffic (CBR), drastically...
[August 13, 2007, 8:09]
The Web and Evolving Business Models: An Analysis of the Commercial Print Industry
White Papers This paper reports upon an interview-based survey, which investigated changing business models in the commercial print industry. It explores the fundamental reasons some of these new Web-based models are failing.
[October 13, 2004, 3:00]
Combining Transactional Analytics With Insight From Interactions: A New Approach to Improving Customer Retention Models
White Papers If organizations could incorporate insight from the millions of spoken customer interactions that they receive in their contact centers, they would greatly improve the accuracy of their predictive models, be able to identify the customers who show...
[July 14, 2006, 0:00]
Mathematics Based Software Construction Models (Part 5 of 6): Solid Prototyping-Level 200
White Papers Join this fifth webcast in a six-part series on mathematics-based modeling in software development as we offer techniques on using prototyping models with only two component-types to help your applications pass quality control smoothly and with...
[October 18, 2004, 0:00]
