The Programme for the International Assessment of Adult Competencies (PIAAC) has been planned as an ongoing program of assessment. The first cycle of the assessment has involved two "rounds." The first round, which is covered by this report, took place over the period of January 2008-October 2013. The main features of the first cycle of…

The Programme for International Assessment of Adult Competencies (PIAAC) will establish technical standards and guidelines to ensure that the survey design and implementation processes of PIAAC yield high-quality and internationally comparable data. This document provides a revised version of the technical standards and guidelines originally…

Using Excel, an interactive program is designed to simulate the Solow and endogenous growth models to facilitate the understanding of these models for students of growth theory and macroeconomics.

Discusses data acquisition systems for biologists, considering: (1) input; (2) output; (3) controllers; (4) software for data acquisition; and (5) programing languages. Also discusses several biochemical databases, including those storing data on protein sequences and on chemical structures in two-dimensional form (together with biological testing…

Enumerates principal management objectives of database management systems (data independence, quality, security, multiuser access, central control) and criteria for comparison (response time, size, flexibility, other features). Conventional database management systems, relational databases, and database machines used for backend processing are…

Item response theory (IRT) methodology is introduced as a tool for improving assessment instruments used with people who have disabilities. Need for this approach in rehabilitation is emphasized; differences between IRT and classical test theory are clarified. Concepts essential to understanding IRT are defined, necessary data assumptions are…

Built-in data structures are the registers and memory words where binary values are stored; hard-wired algorithms are the fixed rules, embodied in electronic logic circuits, by which stored data are interpreted as instructions to be executed. Various topics related to these two basic elements of every computer program are discussed. (JN)

Methods to make computer searching as simple and efficient as possible have led to the development of various data structures. Data structures specify the items involved in searching and what can be done to them. The nature and advantages of using "self-adjusting" data structures (self-adjusting binary search trees) are discussed. (JN)

This annual review article examines the automated library system marketplace from four perspectives: turnkey circulation systems, library-developed software which may be purchased by other libraries, the microcomputer segment of market, and production of COM catalogs. Addresses of 86 turnkey vendors, software vendors, library-developed systems,…

Identifies technical and linguistic problems associated with use of Arabic in input and output devices and describes efforts to introduce a unified code for the Arabic language (CODAR-U/FD). The Hydriyya Method, requirements for Arabic terminals suitable for library use, manufacturers of bilingual terminals, and Arabization of software are…

This book discusses constructing variables and making measures. It begins by outlining the qualities a number must meet before it qualifies as a measure of something. The basis is the measurement philosophy of G. Rasch. The first requirement for making good measures is good raw material. To achieve the possibility of comparisons, the data must…

Offers some strategies for enabling science teachers to make better use of data-logging methods. These ideas are grounded in the belief that science teachers are expert lesson planners. Benefits gained for students using data-logging techniques are more likely to be secured through teachers re-interpreting their planning approaches in the new…