MEDIATION EFFECTS AS A FUNCTION OF MEDIATOR RECALL AND MEANINGFULNESS.

STUDIED MEDIATION EFFECTS AS A FUNCTION OF MEDIATOR RECALL AND MEANINGFULNESS. USING THE A-B, A-C, B-C (A-B, D-C, B-C CONTROL) PARADIGM, B AND C ITEMS WERE PRESENTED AT A 0/6, 2/6, 4/6, OR 6/6 CRITERION OF STAGE 3 ACQUISITION, AND S RECALLED THE ITEMS ASSOCIATED WITH B AND C IN STAGES 1 AND 2. THE A AND D ITEMS WERE PRESENTED AFTER STAGE 2 IN ORDER TO ASSESS DIFFERENCES IN FORWARD AND BACKWARD RECALL AT THE 0/6 CRITERION. HIGH- AND LOW-M VERBAL MATERIAL CONDITIONS WERE ORTHOGONAL TO THE RECALL CONDITIONS. THE MAJOR RESULTS WERE: (1) HIGH-M MATERIALS APPARENTLY YIELD SUPERIOR BACKWARD LEARNING AND LESS BACKWARD UNLEARNING IN STAGES 1 AND 2, THUS MAKING THE MEDIATOR MORE AVAILABLE FOR HIGH-M MATERIAL AT THE ONSET OF STAGE 3; (2) STAGE 3 ACQUISITION PRODUCES A GENERAL DECREASE IN MEDIATOR RECALL; AND (3) THERE WAS A GENERAL LACK OF RELATIONSHIP BETWEEN MEDIATOR RECALL IN STAGE 3 AND B-C PERFORMANCE. THE FINDINGS WERE INTERPRETED IN TERMS OF THE RELATION OF ASSOCIATIVE STRENGTH OF B-A AND C-A AFTER STAGE 1 AND 2 ACQUISITION AND ITS RELATION TO MEDIATOR USAGE. (FRENCH SUMMARY) (19 REF.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Electrical Resistivity of Refractories

Electrical resistivity was measured on commercially available materials, including high-alumina, magnesia, magnesia-chrome, zircon, and stabilized-zirconia refractories, at temperatures to 2650°F. The tests were made using two-, three-, and four-terminal measurements and the results are discussed. The four-terminal measurements were made by a new method.     

MEASUREMENT BY COMPRESSION TEST OF IMPACT DAMAGE TO CITRUS FRUITS*

Abstract. Oranges and grapefruit were subjected to single and repeated impact drops from three heights. Subsequent measurements of the force-deformation ratio and hysteresis loss were made with quasi-static compression tests on the impacted whole fruit. Internal damage was indicated by a reduction in the force-deformation ratio and an increase in the hysteresis loss for a single 100 cm drop and two or more drops from 25 or 50 cm heights.     

Vibratory Compacting of Metal and Ceramic Powders

This investigation was concerned primarily with the forming of alumina, chromium-alumina, and nickel-titanium carbide powders by low-frequency vibration. The effect of a wide variety of particle-size distributions on the forming properties of these compositions was studied. An instrumentation system was developed for measuring the vibratory forces employed. Results obtained with various low-frequency vibratory forming procedures are reported. Similar compositions were formed by dry pressing followed by hydrostatic repressing, and the properties of the specimens formed by the two methods are compared. The vibratory forming method offers a number of advantages over the hydrostatic method.     

EFFECTS OF THE TYPE OF STIMULUS EMPLOYED AND THE LEVEL OF SUBJECT AWARENESS ON THE DETECTION OF DECEPTION.

COMPARED DETECTION OF PERSONAL MATERIAL WITH THAT OF NEUTRAL MATERIAL MADE RELEVANT ONLY IN THE EXPERIMENTAL CONTEXT. EACH OF 28 MALE UNDERGRADUATES ACTED AS AN ESPIONAGE AGENT TO CONCEAL PERSONAL IDENTITY AND CODE WORDS LEARNED. PERSONALLY RELEVANT MATERIAL WAS FOUND TO BE SIGNIFICANTLY MORE DETECTABLE THAN THE NEUTRAL MATERIAL, ALTHOUGH CONSEQUENCES OF DETECTION WERE THE SAME. THE STUDY ALSO PROVIDED EXPLORATORY DATA CONCERNING PHYSIOLOGICAL RESPONSIVITY TO LIE-DETECTION STIMULI WHEN SS WERE UNAWARE THAT RESPONSES WERE BEING MONITORED. WHILE THERE WAS NO EVIDENCE THAT DETECTION WAS INFERIOR UNDER THE NONAWARE CONDITION, DIFFICULTIES IN ACHIEVING A COMPLETELY CONVINCING NONAWARE SITUATION SUGGEST CAUTION IN GENERALIZATION. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Parallelizing Imperative Functional Programs: the Vectorization Monad

Traditionally a vectorizing compiler matches the iterative constructs of a program against a set of predefined templates. If a loop contains no dependency cycles then amaptemplate can be used; other simple dependencies can often be expressed in terms offoldorscantemplates. This paper addresses the template matching problem within the context of functional programming. A small collection of program identities are used to specify vectorizable for-loops. By incorporating these program identities within a monad,allwell-typed for-loops in which the body of the loop is expressed using thevectorization monadcan be vectorized. This technique enables the elimination of template matching from a vectorizing compiler, and the proof of the safety of vectorization can be performed by a type inference mechanism.     

The Ontolingua Server: a tool for collaborative ontology construction

Reusable ontologies are becoming increasingly important for tasks such as information integration, knowledge-level interoperation and knowledge-base development. We have developed a set of tools and services to support the process of achieving consensus on commonly shared ontologies by geographically distributed groups. These tools make use of the World Wide Web to enable wide access and provide users with the ability to publish, browse, create and edit ontologies stored on anontology server. Users can quickly assemble a new ontology from a library of modules. We discuss how our system was constructed, how it exploits existing protocols and browsing tools, and our experience supporting hundreds of users. We describe applications using our tools to achieve consensus on ontologies and to integrate information.The Ontolingua Server may be accessed through the URLhttp://ontolingua.stanford.edu     

Liquid-Phase-Assisted Transformation of Seeded γ-Alumina

α-Al₂O₃-seeded, boehmite-derived γ-Al₂O₃ was transformed in the presence of V₂O₅, resulting in a 205°C decrease in the α-Al₂O₃ transformation temperature and a 74% reduction in the apparent activation energy for the γ- to α-Al₂O₃ transformation at temperatures greater than 850°C. These changes are attributed to the lowered energy barrier for nucleation by seeding and the lowered activation energy for material transport through the liquid relative to the unseeded, solid-state transformation. Growth of the transforming alumina yielded fine-grained α-Al₂O₃ particles which exhibited a highly faceted morphology. It is proposed that the combined control of both nucleation and growth during liquid-phase-assisted transformation provides a potentially powerful technique for tailoring powder characteristics in many material systems which undergo nucleation and growth processes.     

THE HEAT RESISTANCE AND CONFORMATIONAL PLASTICITY OF KUNITZ SOYBEAN TRYPSIN INHIBITOR

The heat resistance of Kunitz soybean trypsin inhibitor (KSTI) and the conformational plasticity of the purified protein were examined in Tris-HCI buffer (0.05M, pH 8). The rate of KSTI inactivation at moderate temperatures 70–100C was slow. The time for 90% inactivation (D-value) of KSTI at 120–150C ranged between 81s–1047s. The activation enthalpy (ΔS) and entropy (ΔS^#) change for ultrahigh temperature (UHT) inactivation of KSTI was 107 kj mot^-1 and -26 J mol^-1, respectively. Fluorescence monitoring of KSTI structure showed a conformational change at 30–70C with a mid-point temperature (Tm) of 55.6C. The heat induced structural change was fully reversible. There was complete regain of the KSTI native structure after heating at 80C, as judged from intrinsic fluorescence measurements. The results are considered in relation to the Lumry-Eyring 2-stage scheme protein inactivation. The UHT resistance of KSTI may be ascribed to its conformation plasticity which allows efficient regain of its native structure after heat unfolding. Other possible causes of heat resistance in biologically active proteins and peptides (BAPP) are briefly discussed.