Unitary Mode Research Articles

Terms of Visibility

Viewed within a sociohistorical context, eldercare in Israel is examined as a cultural construct evolving from invisibility of the old to growing visibility. Visibility is a function of the presence of eldercare in the public discourse that changes in correspondence with societal transformations such as globalization, fundamentalistic orientations, and post-Zionist trends. Three ethnographic case studies are analyzed to demonstrate the effects of these processes on alternative conceptions of eldercare. It is suggested that the symbolic languages of eldercare in Israeli culture are embedded in a unitary mode of exchange, namely, generalized reciprocity. The properties of these communal vocabularies are ascertained in an attempt to advance an argument interlinking care, identity, memory, and symbolic immortality.

On Unitary and Forward–Backward MODE

A new unitary (real-valued) formulation of the popular MODE direction-of-arrival (DOA) estimator is considered. Our unitary MODE algorithm has a reduced computational complexity because it is based on the eigendecomposition of a real-valued covariance matrix. We prove its exact equivalence to the forward-backward MODE (FB-MODE) estimator derived by Stoica and Jansson. This property sheds a new light on the usefulness of FB-MODE.

Orientational Structures in Chiral Nematic Liquid Crystals for Weak Anchoring

This work presents a unitary mode to describe orientational structures of extreme free energy for Unidimensional distortions of a chiral nematic layer with weak tilted anchoring at limiting surfaces, using structure parameters. The case of an applied electric field was also considered. A generalised expression for surface energy involving both polar and azimuthal deformations was introduced A classification of possible structures having monotonous or non-monotonous variations of the tilt angle is presented. The solving of the equation system that links the structure parameters in each case is given.

Modular metazoans: gonochoric, hermaphroditic, or both at once?

Summary We introduce a classification system for the sexual modes of modular (clonal and colonial) animals which incorporates both spatial and temporal components of modular sexuality. After explaining and illustrating each potential sexual mode, we compare the prevalence patterns of sexual modes among modular animals, unitary animals, and flowering plants. Our conclusions are: (1) There are far more potential colonial modes of sex, and more clonal modes of sex, than there are unitary modes of sex. This is a function of the tri-level and bi-level organization, respectively, of colonial and clonal animals, in contrast to the single level of unitary ones. (2)Only five of ten potential colonial modes of sex have known examples, while only four of six potential clonal modes of sex have known examples. (3) The sexual mode of many modular metazoans is not known, in part because of a previous lack of terms by which to refer to modular sex at all its levels of expression. (4) Comparison of clonal and colonial animals reveals that genet gonochorism is nearly twice as common in clonal as in colonial animals. Genet hermaphroditism achieved by gonochoric modules of both sexes (monoecy) is about three times as common in colonial as in clonal animals. (5) Comparison of unitary and modular animals reveals that genet sequential hermaphroditism, while moderately common among unitary animals, has virtually no examples among modular ones. Genet gonochorism is also more prevalent among unitary animals than among modular ones (and conversely, genet simultaneous hermaphroditism is far more prevalent among modular than unitary animals). (6) Despite striking differences in the prevalence of different sexual modes at the genet level, clonal, colonial, and unitary animals display very similar patterns of sexual mode when examined at the modular level. (7) Comparison of seed plants and modular animals reveals that both genet gonochorism and monoecy are considerably rarer in plants than in modular animals. Sequentially hermaphroditic genets may be more common among plants than among modular animals. Some sexual modes in our classification may be represented among plants, but not among animals.

Reducing cognitive load by mixing auditory and visual presentation modes.

This article reports findings on the use of a partly auditory and partly visual mode of presentation for geometry worked examples. The logic was based on the split-attention effect and the effect of presentation modality on working memory. The split-attention effect occurs when students must split their attention between multiple sources of information, which results in a heavy cognitive load. Presentation-modality effects suggest that working memory has partially independent processors for handling visual and auditory material. Effective working memory may be increased by presenting material in a mixed rather than a unitary mode. If so, the negative consequences of split attention in geometry might be ameliorated by presenting geometry statements in auditory, rather than visual, form. The results of 6 experiments supported this hypothesis.

Congenital glaucoma: Genetic models

Modes of inheritance of congenital glaucoma have been studied. Two methods of analysis, complex segregation analysis and frequency of congenital glaucoma in second- and third-degree relatives, did not permit one to retain a unitary mode of inheritance ofthis malformation. Genetic heterogeneity of congenital glaucoma is proposed. Recurrence risks and guidelines for genetic counseling in specified situations are given.