A manual of natural and experimental philosophy : being the substance of a series of lectures delivered in the London, Russell, Surrey, and metropolitan institutions /

Mode of access: Internet.

Scientific dialogues Intended for the instruction and entertainment of young people: in which the first principles of natural and experimental philosophy are fully explained.

OP 45080.

Experimental researches in electricity /

Reprinted from Philosophical transactions, 1832-1852.

A mathematical and philosophical dictionary: containing an explanation of the terms, and an account of the several subjects, comprized under the heads mathematics, astronomy, and philosophy both natural and experimental:

Mode of access: Internet.

The psychology of reading: an experimental study of the reading and movements of the eye,

Mode of access: Internet.

Nicotiana : procedures for experimental use /

Issued Jan. 1979.

Hydrologic data for experimental agricultural watersheds in the United States /

Description based on: 1971.

Hydrologic data for experimental agricultural watersheds in the United States, 1980 /

Issued Jan. 1980.

Hydrologic data for experimental agricultural watersheds in the United States, 1969 /

Prepared in cooperation with State agricultural experiment stations.

Hydrologic data for experimental agricultural watersheds in the United States, 1971 /

"Prepared by Science and Education Administration."

Hydrologic data for experimental agricultural watersheds in the United States, 1972 /

Prepared in cooperation with state agricultural experiment stations.

The Journal of pharmacology and experimental therapeutics.

Print issues ceased with v. 339, no.3 (Dec. 2011)

The Rothamstead memoirs on agricultural science

Mode of access: Internet.

Mechanical alloying of MoSi2 with ternary alloying elements. Part 1: Experimental

Phase evolution during the mechanical alloying of Mo and Si elemental powders with a ternary addition of Al, Mg, Ti or Zr was monitored using X-ray diffraction. Rietveld analysis was used to quantify the phase proportions. When Mo and Si are mechanically alloyed in the absence of a ternary element, the tetragonal C11b polymorph of MoSi2 (t-MoSi2) forms by a self-propagating combustion reaction. With additional milling, the tetragonal phase transforms to the hexagonal C40 structure (h-MoSi2). The mechanical alloying of Al, Mg and Ti additions with Mo and Si tend to promote a more rapid transformation of t-MoSi2 to h-MoSi2. In high concentrations, the addition of these ternary elements inhibits the initial combustion reaction, instead promoting the direct formation of h-MoSi2. The addition of Zr tends to stabilise the tetragonal phase.

Ex ante evaluations of alternate data structures for end user queries: Theory and experimental test

The data structure of an information system can significantly impact the ability of end users to efficiently and effectively retrieve the information they need. This research develops a methodology for evaluating, ex ante, the relative desirability of alternative data structures for end user queries. This research theorizes that the data structure that yields the lowest weighted average complexity for a representative sample of information requests is the most desirable data structure for end user queries. The theory was tested in an experiment that compared queries from two different relational database schemas. As theorized, end users querying the data structure associated with the less complex queries performed better Complexity was measured using three different Halstead metrics. Each of the three metrics provided excellent predictions of end user performance. This research supplies strong evidence that organizations can use complexity metrics to evaluate, ex ante, the desirability of alternate data structures. Organizations can use these evaluations to enhance the efficient and effective retrieval of information by creating data structures that minimize end user query complexity.