Showing papers by "University of Victoria published in 1972"
TL;DR: In this article, the convergence conditions of the double hypergeometric series of the generalized KAMPE DE FERIET function introduced earlier by the authors were discussed and extended to obtain the domain of convergence of the authors' multiple hyper geometric series associated with the generalized LAURICELLA function of several variables.
Abstract: By using a technique of HORN [4], the authors discuss here the convergence conditions of the double hypergeometric series of the generalized KAMPE DE FERIET function introduced earlier by them [7]. It is shown that the recent observations of RAGAB [6] would follow fairly easily by suitably specializing the results of the present note. Also the method employed here is appropriately extended to obtain the domain of convergence of the authors' multiple hypergeometric series associated with the generalized LAURICELLA function of several variables [8].
114 citations
TL;DR: It was found that the RNA-growth relationship derived by Sutcliffe (1965) did not agree with that found for A. salina in this study and neither equation accurately predicted growth rates for E. elongata copepodids.
Abstract: The concentrations of RNA, DNA and protein, and the dry weight in 3 cultures of the anostracan Artemia salina (L.) were measured to investigate the usefulness of the RNA-growth relationship in estimating growth or productivity. Similar analyses were performed on Copepodid stages III to VI of the calanoid copepod Euchaeta elongata Esterly collected periodically over 7 months in Haro Strait and over 4 months in Saanich Inlet, British Columbia, Canada. It was found that the RNA-growth relationship derived by Sutcliffe (1965) did not agree with that found for A. salina in this study. Also, neither equation accurately predicted growth rates for E. elongata copepodids. It is concluded that the general positive relationship between RNA concentration and growth rate lacks sufficient specificity to be used as a method for predicting growth rates in these species.
109 citations
TL;DR: There have been several conflicting reports on the genetic effects of Dichlorvos (2,2-dichlorovinyl dimethyl phosphate), which is the active ingredient of Shell's pesticide, ‘Vapona’.
Abstract: THERE have been several conflicting reports on the genetic effects of Dichlorvos (2,2-dichlorovinyl dimethyl phosphate), which is the active ingredient of Shell's pesticide, ‘Vapona’. Dichlorvos is present in ‘Herkol’, ‘Dedevap’, ‘Oko’, and ‘Mafu’ which are listed as synonyms by Epstein and Legator1. Sax and Sax2 reported chromosome aberrations in onion root tips. Lofroth3 working with pure Dichlorvos demonstrated, in vitro, the alkylation of calf thymus DNA in which N-7-methylguanine was the major product with a yield of 1% after 60 h treatment. According to Epstein and Legator1 who cite the work of Michalek and Brockman4 Dichlorvos is mutagenic in Neurospora. However, this is a mistake, as Michalek and Brockman using the Adenine 3 region of Neurospora crassa were unable to demonstrate any mutagenic effect of Dichlorvos.
71 citations
TL;DR: In this paper, it is suggested that light adaptation is a function of the taxonomic composition of the phytoplankton crop and possible relationships between chlorophyll maxima and micro-zooplankton are discussed.
62 citations
TL;DR: Experiments demonstrated HES to be as good as, and possibly better than PVP and a number of dextrans of average molecular weight were shown to be poor as cryoprotective agents in contrast to results obtained with this polymer with red cells and bacteria.
57 citations
TL;DR: C Cyanidin, pelargonid in, peonidin and five unidentified purple pigments have been isolated from hydrolyzed extracts of maize plants, and luteolinidin is probably originally present as the leuco substance luteoforol.
46 citations
36 citations
33 citations
TL;DR: In this paper, the conceptual distinction between families and households is examined, and it is shown that people living together in domestic and sexually consequential relationships are more empirically useful than families in terms of social problems.
Abstract: Definitions of the family are considered as a source of familial social problems, and the conceptual distinction between families and households is examined. Families are ordinarily conceptualized in terms of kinship, and may involve at least three kinds of kin: conventional, discretionary, and fictive; households are constituted by residential propinquity and domestic functions, and not necessarily kinsmen. An alternative focus, people living together in domestic and sexually consequential relationships is proposed as more empirically useful. Whether families or households, a central social problem for people living together involves the division of labor, and the commitments and attachments of persons socially differentiated on the axes of age and sex. The question of just what constitutes the generic categpry of "social problems" has continued to occupy the attention of sociologists, if not perplex them for an extended period (Mills, 1943; Bend and Vogelfanger, 1964; Merton, 1961; Douglas, 1971, and forthcoming). This definitional issue
33 citations
TL;DR: The gastric and digestive diverticular proteolysis capacities fluctuate, possibly according to tidal or other natural rhythms, andpossibly according to quality and quantity of food.
28 citations
TL;DR: In this article, a model of a periodic line current above a non-uniform earth, represented by a conducting half space with a horizontal plane boundary and divided by a vertical plane into two regions of different conductivities, is considered and the solution for the field is generated by perturbation from the corresponding solution for a perfectly conducting earth.
Abstract: Summary
A two-dimensional problem in electromagnetic induction which is of interest in explaining the effect of a coastline on geomagnetic variations is solved analytically. The model considered consists of a periodic line current above a non-uniform earth, represented by a conducting half space with a horizontal plane boundary and divided by a vertical plane into two regions of different conductivities. The solution for the field is generated by perturbation from the corresponding solution for a perfectly conducting earth. Limiting expressions for the field are derived for the case when the height and magnitude of the line current approach infinity in such a way that the inducing field near the Earth becomes uniform and finite. The variation of the field at the surface of the conductor is shown for a line current at finite height and the variations at different heights above the conductor are shown for a uniform inducing field. The latter results are compared with those recently obtained by numerical methods.
TL;DR: It was concluded that in the absence of genealogical data by which to identify local populations, local cultural units are preferable to more inclusive units for making empirical comparisons and classifications.
Abstract: Anthropometric data collected in native populations of British Columbia in the late 19th century by Franz Boas were analyzed by two multivariate techniques. Multivariate analysis of variance was used to test physical classificatory units devised by Boas and an ad hoc classification based on local cultural units. Both were found to have some empirical validity. Mahalanobis' D (Mahalanobis, '30) was computed between pairs of local groups, for both sexes. From these a matrix of differences was prepared and diagrams drawn to illustrate phenetic relationships among samples. By this means one cluster of groups, Interior B.C. peoples, could be distinguished and other local samples appeared distinctly different from each other. It was concluded that in the absence of genealogical data by which to identify local populations, local cultural units are preferable to more inclusive units for making empirical comparisons and classifications.
TL;DR: The full complement of uricolytic enzymes—uricase, allantoinase,Allantoicase and urease—was found in the digestive diverticula of all four species and was found to be equally rate limiting.
Abstract: 1. 1. The digestive diverticula, kidney and mantle tissue of Anodonta kennerlyi (Lea),Mytilus californianus (Conrad), Saxidomus giganteus and Compsomyax subdiaphana (Carpenter) were investigated. 2. 2. Ornithine transcarbamylase, argininosuccinate synthetase, argininosuccinate lyase and arginase were detected in the digestive diverticula of all species examined. 3. 3. Argininosuccinate synthetase was found to be rate limiting in urea biosynthesis. 4. 4. The full complement of uricolytic enzymes—uricase, allantoinase, allantoicase and urease—was found in the digestive diverticula of all four species. 5. 5. Uricase and allantoicase were found to be equally rate limiting. Carbam ylphosphate synthetase activity could not be detected. 6. 6. None of the enzymes investigated were found in the kidney or the mantle.
TL;DR: In this paper, Zajonc's hypothesis was combined with a postulate of general drive theory to predict that the effects of anxiety and an audience would summate to increase the level of drive.
Abstract: Zajonc’s (1965) hypothesis was combined with a postulate of general drive theory to predict that the effects of anxiety and an audience would summate to increase the level of drive. Eighty Ss were used in a 2 by 2 by 2 design that had audience, anxiety, and list as factors. For one list competitive responses were high, and for the other they were low. Analysis of variance results and the order of the mean trials to criterion were consistent with the prediction based on the summation hypothesis, e.g., of the eight conditions, the presence of an audience produced the best learning of the noncompetitive list and the poorest learning of the competitive list by high-anxious Ss. However, the lack of significant differences in the learning of the noncompetitive list did not support the summation hypothesis for this task.
TL;DR: The Hill reaction of bean chloroplasts was inhibited by potassium fluoride within a pH range of 4.8-5.7 as discussed by the authors, and no inhibition was detected at higher pH's.
TL;DR: For complete P-partitions where P is hereditary, the homomorphism interpolation theorem of Harary, Heditniemi and Prins was shown to generalize to complete P partitions of order n as mentioned in this paper.
TL;DR: Resolution near the resolution limit of the camera has been obtained in holograms of the fundi of anaesthetized cats and laser intensities on the retina are below injury levels.
Abstract: Modifications to a Zeiss fundus camera to enable production of holograms of selected sites of an optic fundus are described. Resolution near the resolution limit of the camera has been obtained in holograms of the fundi of anaesthetized cats. Laser intensities on the retina are below injury levels.
TL;DR: Freezing and thawing of E. coli cells does not produce single strand breaks and young cultures demonstrate a biphasic distribution of DNA molecules compared with older cultures that contain the normally expected distribution.
TL;DR: In this paper, a system of ordering space found among the people of the central and western Caroline Islands of Micronesia will be described, the fundamental concepts of which bear a striking resemblance to particular regulative principles found among various Southeast Asian peoples.
Abstract: In this article a system of ordering space found among the people of the central and western Caroline Islands of Micronesia will be described, the fundamental concepts of which bear a striking resemblance to particular regulative principles found among various Southeast Asian peoples. If a genetic connection is accepted for these parallels the form taken by Southeast Asian cultures after contact with ‘Hindu/Buddhist’ peoples can be interpreted as a natural outgrowth of concepts already basic to these cultures before such contact. The ethnographic information presented here, therefore, is directed to the comparative analysis of the culture history of Southeast Asia and Oceania and should be viewed in conjunction with the recent work of linguists and archaeologists on this topic (e.g. Benedict, 1966, 1967; Grace, Solheim and Chang, 1964).
TL;DR: For instance, the anthropologist John Roberts as discussed by the authors attempted to take games seriously by conceptualizing games in a systematic way along with the collection and analysis of comparative and cross-cultural data.
Abstract: Sociological employment of games and the game concept as both metaphor and model (Manning, 1967, 1968) has been as frequent as it has been fruitful. Less common, but possibly of equal fertility, is the empirical investigation of games themselves. If taking games seriously has been beyond the concern of most sociological investigators (however, see Avedon and Sutton-Smith, 1971; Luschen, 1970), this is certainly not the case for the many who immerse themselves within them, either as player or participant, in the mundane world. Prominent among the few social scientists who have taken games seriously is the anthropologist John Roberts (along with his several associates). Unlike Roger Caillois (1961), who has looked at games in a scholarly but anecdotal way, Roberts has attempted their systematic conceptualization along with the collection and analysis of comparative and cross-cultural data.
TL;DR: In this article, the authors describe the later stages in the development of a series of reasoning items for the Operational Thinking sub-scale of the British Intelligence Scale (BIS) and describe the strategies employed by subjects in responding to problems of equivalence, incompatibility, implication, negation and disjunction.
Abstract: Summary. The construction of the new British Intelligence Scale (BIS) has now reached the stage at which items are being selected for inclusion in a standardisation test. The data upon which these decisions are mainly based were obtained from a large scale try-out experiment carried out on a national scale and within which the effects of intelligence level, socio-economic class, sex and geographical locations were examined. The article describes the later stages in the development of a series of reasoning items for the Operational Thinking sub-scale. “Butch and Slim,” a logical ‘game,’ was based upon the combinatorial of 16 binary propositions of p and q and represents an attempt to integrate developmental material into a factorial framework. The items were subjected to try-out in the main BIS experiment and other data were obtained from additional sources. The results broadly justify the rationale adopted for the items, an outstanding feature being clear developmental trends in the ability to carry out operations involving negation. Some promising evidence as to reliability and validity emerged and, in general, psychologists involved in the try-out were positive about the items. Further analyses of error patterns did not reveal clear qualitative differences between age groups. The strategies employed by subjects in responding to problems of equivalence, incompatibility, implication, negation and disjunction are described. A number of substantial modifications to the items are suggested.
TL;DR: If the winner is deleted and the ranks assigned to the remaining individuals are adjusted, then an ordering of the reduced set is obtained and this ordering is said to be consistent with the original ordering if the relative positions of all remainingindividuals are unchanged.
TL;DR: This article investigated the effectiveness of three different methods of presenting new words to children who are beginning to recognize words and found that the word-object method was significantly different from the word method at the.05 level.
Abstract: This study investigated the effectiveness of three different methods of presenting new words to children who are beginning to recognize words. Three groups of kindergarteners-twenty-five girls and boys each-were taught four words cither by a word, word-picture, or word-object method. Using analysis of variance procedures, no significant differences were found between the three methods of presentation for the kindergarten girls, but significant differences (p < .05 level) were found for the boys. A further analysis utilizing the Neuman-Keuls method revealed that the word-object method was significantly different from the word method at the .05 level. No differences were found when the word and word-picture methods, and the word-picture and word-object methods were compared.
TL;DR: In this article, the authors derived an expression for the growth rate of whistler-mode waves propagating in a magneto-active plasma penetrated by a tenuous beam of nonthermal particles.
TL;DR: In this article, the spectral points of an extremal solution of the moment problem are shown to be the extremal points of the Al-Salam and Carlitz q-polynomials and the Stieltjes-Carlitz polynomials.
TL;DR: In this article, the transition between diffusive (saturated-current) and sheath-convection [current?(voltage)?] behavior of the current to a negatively biased Langmuir probe in a plasma jet has been studied experimentally by varying the electron density over a wide range.
Abstract: The transition between diffusive (saturated-current) and sheath-convection [current ?(voltage)?] behaviour of the current to a negatively biased Langmuir probe in a plasma jet has been studied experimentally by varying the electron density over a wide range. The measurements verify for the first time the expected change in the dependence of current on voltage. However, this change occurs at higher electron densities than expected, and, when saturated-current behaviour is finally obtained, these currents are significantly lower than their calculated values and, surprisingly, remain close to the sheath-convection currents calculated for moderate voltages.
TL;DR: In this article, a family of trajectories in a particular Weyl gravitational field were considered, and it was shown that the scalar becomes infinite in a direction of approach previously believed to be singularity-free.