Point-of-sale terminal systems

The retail trade is turning increasingly to computerized systems to provide quickly and accurately the information that it needs to remain profitable.NCR have developed several ranges of computerized point-of-sale equipment for different retail applications. Various systems in use in the food and non-food retail trades are discussed, including those of the Army & Navy group (UK), David Jones (Australia), the Co-Op (UK) and airport duty-free shops.Optical character reading and laser-beam slot scanning will be used to automate further the transaction procedure at the point of sale.     

Sampling improvements in atomic absorption spectroscopy

Atomic absorption spectroscopy is being used as a routein method to determine sodium, potassium, calcium, magnesium, copper and many other metallic elements in oils, fats, milk and other substances. Copper and iron can be measured directly in milk without sample preparation. When highly acidified samples are run, a new plastic-lined nebulizer is useful to prevent spurious results due to corrosion. A new sampling device, the Graphite Furnace, can analyze extremely small samples and gives detection limits in the picogram (10⁻¹² g) range. One of 28 papers presented at the Symposium, “Metal-Catalyzed Lipid Oxidation,” ISF-AOCS World Congress, Chicago, September 1970.     

Conversational and social responses to depressive interpersonal behavior.

Examined responses to depressive interpersonal behavior. 30 undergraduates interacted with a same-sex confederate for 7 min in the context of waiting together for an experiment to begin. Confederates employed either a depressed role (depressive interpersonal behavior and reporting serious deficits in functioning), a normal role (normal interpersonal behavior and reporting minimal deficits in functioning), or a physically ill role (normal interpersonal behavior and reporting serious deficits in functioning). Ss who interacted with a "depressive" responded with a higher rate of silences and directly negative comments and a lower rate of overall verbal responding. Their expressions of direct support were equivalent to those made to the "physically ill" confederates and greater than those in the normal condition. Ss also were more rejecting of partners who behaved in a depressed manner and described them in more negative terms and as having greater interpersonal impact than confederates in other roles. There were no induced mood differences. (16 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Validity of the 16 PF and the MMPI in a mental hospital setting.

Administered the MMPI and 16 PF to 201 15-60 yr. old new admissions to a state mental hospital. Correlations between the 2 sets of scale scores were examined directly and by factor analysis. 3 common factors appeared to be represented to some extent in both instruments. The 16 PF appeared weak in the measurement of the more serious kinds of psychopathology, and had strongest loadings in a common factor identified with the validity scales of the MMPI. The 16 PF was found to measure 3 higher-order factors of personality not represented in the MMPI, but they do not appear highly relevant for assessment in a disturbed mental hospital population. Numerous significant relationships to psychiatrically relevant background variables were identified in analyses of profiles derived from both instruments. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Infants' reactions to perceptual paradox during mother–infant interaction.

36 3-mo-old infants interacted with their mothers under conditions in which they could see and hear their mothers (correlated auditory plus visual information: A?+?V), see but not hear their mothers (V), and hear but not see their mothers (A); the latter 2 conditions are termed perceptual paradox. The interactions were videotaped, and the Ss' behavior was judged by naive observers who used a subjective 7-point rating scale of infant affect. For 2 groups of Ss, 3 1-min presentations of the A?+?V condition were alternated with 3 1-min presentations of either A (Group 1) or V (Group 2) conditions. In both groups, Ss were judged as being more distressed during unimodal presentations than during bimodal presentations. In a 3rd group, unimodal (A) presentations were alternated with unimodal (V) presentations. Ss in this group were significantly more distressed when they could hear but not see their mothers than when they could see but not hear their mothers. Results demonstrate the suitability of global subjective ratings of affective state in studies of infant perception. (17 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Structures revealed in zone refined aluminum by tritium decoration

A method is described for decorating structures in solid aluminum by precipitation of hydrogen onto them. Radioactive hydrogen is employed so that the deposition sites can be revealed by the use of autoradiographic techniques. The study was conducted with zone refined aluminum, and the primary structure that was revealed was that remaining after directional solidification during the last zone pass. The tritium was added to the specimen at 600°C and its precipitation was brought about by quenching the sample. As little as 0.05 ppm of tritium was sufficient to reveal complex structures in the cast metal that are attributed to association of unidentified residual impurity atoms with low angle subgrain boundaries that are thought to have resulted from polygonization occurring immediately behind the advancing solid-liquid interface. Wide-angle grain boundaries were also decorated. New structures were introduced by various levels of strain that accompanied different upsetting operations. Grain and subgrain boundaries that developed during strain anneals were “antisites” for hydrogen deposition. This opposite behavior is attributed to the absence of impurity atoms in these “new” boundaries. An explanation for the behavior of hydrogen in aluminum is given in terms of the condensation of vacancies vs their loss to vacancy sinks. These phenomena are shown to be involved in the enlargement of hydrogen-filled pores in aluminum.