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Recent documents in Scholarship @ Claremonten-usFri, 09 Dec 2016 01:37:51 PST3600Stability of Ideal Lattices from Quadratic Number Fields
http://scholarship.claremont.edu/cmc_fac_pub/446
http://scholarship.claremont.edu/cmc_fac_pub/446Thu, 08 Dec 2016 12:55:15 PST
We study semi-stable ideal lattices coming from real quadratic number fields. Specifically, we demonstrate infinite families of semi-stable and unstable ideal lattices of trace type, establishing explicit conditions on the canonical basis of an ideal that ensure stability; in particular, our result implies that an ideal lattice of trace type coming from a real quadratic field is semi-stable with positive probability. We also briefly discuss the connection between stability and well-roundedness of Euclidean lattices.
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Lenny FukshanskyToeplitz Determinants with Perturbations in the Corners
http://scholarship.claremont.edu/cmc_fac_pub/445
http://scholarship.claremont.edu/cmc_fac_pub/445Thu, 08 Dec 2016 12:55:07 PST
The paper is devoted to exact and asymptotic formulas for the determinants of Toeplitz matrices with perturbations by blocks of fixed size in the four corners. If the norms of the inverses of the unperturbed matrices remain bounded as the matrix dimension goes to infinity, then standard perturbation theory yields asymptotic expressions for the perturbed determinants. This premise is not satisfied for matrices generated by so-called Fisher–Hartwig symbols. In that case we establish formulas for pure single Fisher–Hartwig singularities and for Hermitian matrices induced by general Fisher–Hartwig symbols.
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Albrecht Böttcher et al.On Lattices Generated by Finite Abelian Groups
http://scholarship.claremont.edu/cmc_fac_pub/444
http://scholarship.claremont.edu/cmc_fac_pub/444Thu, 08 Dec 2016 12:54:58 PST
This paper is devoted to the study of lattices generated by finite Abelian groups. Special species of such lattices arise in the exploration of elliptic curves over finite fields. In the case where the generating group is cyclic, they are also known as the Barnes lattices. It is shown that for every finite Abelian group with the exception of the cyclic group of order four these lattices have a basis of minimal vectors. Another result provides an improvement of a recent upper bound by M. Sha for the covering radius in the case of the Barnes lattices. Also discussed are properties of the automorphism groups of these lattices.
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Albrecht Böttcher et al.Permutation Invariant Lattices
http://scholarship.claremont.edu/cmc_fac_pub/443
http://scholarship.claremont.edu/cmc_fac_pub/443Thu, 08 Dec 2016 12:54:50 PST
We say that a Euclidean lattice in Rn is permutation invariant if its automorphism group has non-trivial intersection with the symmetric group Sn, i.e., if the lattice is closed under the action of some non-identity elements of Sn. Given a fixed element τ ∈ Sn, we study properties of the set of all lattices closed under the action of τ: we call such lattices τ-invariant. These lattices naturally generalize cyclic lattices introduced by Micciancio in [8, 9], which we previously studied in [1]. Continuing our investigation, we discuss some basic properties of permutation invariant lattices, in particular proving that the subset of well-rounded lattices in the set of all τ-invariant lattices in Rn has positive co-dimension (and hence comprises zero proportion) for all τ different from an n-cycle.
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Lenny Fukshansky et al.Height Bounds on Zeros of Quadratic Forms Over Q-bar
http://scholarship.claremont.edu/cmc_fac_pub/442
http://scholarship.claremont.edu/cmc_fac_pub/442Thu, 08 Dec 2016 12:54:42 PST
In this paper we establish three results on small-height zeros of quadratic polynomials over Q. For a single quadratic form in N ≥ 2 variables on a subspace of Q N , we prove an upper bound on the height of a smallest nontrivial zero outside of an algebraic set under the assumption that such a zero exists. For a system of k quadratic forms on an L-dimensional subspace of Q N , N ≥ L ≥ k(k+1) 2 + 1, we prove existence of a nontrivial simultaneous small-height zero. For a system of one or two inhomogeneous quadratic and m linear polynomials in N ≥ m + 4 variables, we obtain upper bounds on the height of a smallest simultaneous zero, if such a zero exists. Our investigation extends previous results on small zeros of quadratic forms, including Cassels’ theorem and its various generalizations and contributes to the literature of so-called “absolute” Diophantine results with respect to height. All bounds on height are explicit.
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Lenny FukshanskyTotally Isotropic Subspaces of Small Height in Quadratic Spaces
http://scholarship.claremont.edu/cmc_fac_pub/441
http://scholarship.claremont.edu/cmc_fac_pub/441Thu, 08 Dec 2016 12:54:34 PST
Let K be a global field or Q, F a nonzero quadratic form on KN , N ≥ 2, and V a subspace of KN . We prove the existence of an infinite collection of finite families of small-height maximal totally isotropic subspaces of (V, F) such that each such family spans V as a K-vector space. This result generalizes and extends a well known theorem of J. Vaaler [16] and further contributes to the effective study of quadratic forms via height in the general spirit of Cassels’ theorem on small zeros of quadratic forms. All bounds on height are explicit.
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Wai Kiu Chan et al.Lattices from Hermitian Function Fields
http://scholarship.claremont.edu/cmc_fac_pub/440
http://scholarship.claremont.edu/cmc_fac_pub/440Thu, 08 Dec 2016 12:54:27 PST
We consider the well-known Rosenbloom–Tsfasman function field lattices in the special case of Hermitian function fields. We show that in this case the resulting lattices are generated by their minimal vectors, provide an estimate on the total number of minimal vectors, and derive properties of the automorphism groups of these lattices. Our study continues previous investigations of lattices coming from elliptic curves and finite Abelian groups. The lattices we are faced with here are more subtle than those considered previously, and the proofs of the main results require the replacement of the existing linear algebra approaches by deep results of Gerhard Hiss on the factorization of functions with particular divisor support into lines and their inverses.
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Albrecht Böttcher et al.Back Matter 15 (2)
http://scholarship.claremont.edu/aliso/vol15/iss2/8
http://scholarship.claremont.edu/aliso/vol15/iss2/8Wed, 07 Dec 2016 15:27:04 PSTThe Linnaean Hierarchy and the Evolutionization of Taxonomy, with Emphasis on the Problem of Nomenclature
http://scholarship.claremont.edu/aliso/vol15/iss2/7
http://scholarship.claremont.edu/aliso/vol15/iss2/7Wed, 07 Dec 2016 15:27:01 PST
During the post-Darwinian history of taxonomy, the Linnaean hierarchy has maintained its role as a means for representing hierarchical taxonomic relationships. During the same period, the principle of descent has taken on an increasingly important role as the basis for reformulated versions of fundamental taxonomic concepts and principles. Early in this history, the principle of descent provided an explanation for the existence of taxa and implied a nested, hierarchical structure for taxonomic relationships. Although an evolutionary explanation for taxa contradicted the Aristotelian context within which the Linnaean hierarchy was developed, the nested, hierarchical structure of taxonomic rela· tionships implied by evolution was compatible with the practical use of the Linnaean hierarchy for conveying hierarchical relationships and seems to have reinforced this practice. Later changes associated with the development of taxon concepts based on the principle of descent led to changes in the interpretation of the Linnaean categories as well as certain modifications related to use of the Linnaean hierarchy in representing phylogenetic relationships. Although some authors questioned use of the Linnaean hierarchy in phylogenetic taxonomies, most continued to use it in one form ot artother. More recently, taxonomists have considered the relevance of the principle of descent to nomenclature. They have found fundamental inconsistencies between concepts of taxa based on that principle and methods currently used to define taxon names, which are based on the Linnaean hierarchy. Although these inconsistencies can be corrected without totally eliminating the Linnaean hierarchy, the necessary changes would greatly reduce the importance of that hierarchy, particularly in the area of nomenclature. Moreover, the earlier development of taxon concepts based on the principle of descent effectively proposed taxonomic categories of greater theoretical significance than those of the Linnaean hierarchy. The historical trend of granting increasing importance to the principle of descent has reduced the significance of the Linnaean hierarchy to the point where it may no longer be worth retaining.
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Kevin de QueirozClassification: More than Just Branching Patterns of Evolution
http://scholarship.claremont.edu/aliso/vol15/iss2/6
http://scholarship.claremont.edu/aliso/vol15/iss2/6Wed, 07 Dec 2016 15:26:58 PST
The past 35 years in biological systematics have been a time of remarkable philosophical and methodological developments. For nearly a century after Darwin's Origin of Species, systematists worked to understand the diversity of nature based on evolutionary relationships. Numerous concepts were presented and elaborated upon, such as homology, parallelism, divergence, primitiveness and advancedness, cladogenesis and anagenesis. Classifications were based solidly on phylogenetic concepts; they were avowedly monophyletic. Phenetics emphasized the immense challenges represented by phylogeny reconstruction and advised against basing classifications upon it. Pheneticists forced reevaluation of all previous classificatory efforts, and objectivity and repeatability in both grouping and ranking were stressed. The concept of character state was developed, and numerous debates focused on other concepts, such as unit character, homology, similarity, and distance. The simultaneous availability of computers allowed phenetics to explore new limits. Despite numerous positive aspects of phenetics, the near absence of evolutionary insights led eventually to cladistics. Drawing directly from phenetics and from the Hennigian philosophical school, cladistics evolved as an explicit means of deriving branching patterns of phylogeny and upon which classifications might be based. Two decades of cladistics have given us: refined arguments on homology and the evolutionary content of characters and states, views of classifications as testable hypotheses, and computer algorithms for constructing branching patterns of evolution. In contrast to the phenetic movement, which was noteworthy for seeking newer concepts and methods, even including determining evolutionary relationships (which led eventually to numerical cladistics), many cladists have solidified their approaches based on parsimony, outgroups, and holophyly. Instead of looking for newer ways to represent phylogeny, some cladists have attempted to use branching patterns: (1) as a strict basis for biological classification and nomenclature and (2) to explain the origin of biological diversity even down to the populational level. This paper argues that cladistics is inappropriate to both these goals due to: (1) inability of branching patterns to reveal all significant dimensions of phylogeny; (2) acknowledged patterns of reticulate evolution, especially in flowering plants; (3) documented nonparsimonious pathways of evolution: and (4) nondichotomous distribution of genetic variation within populations. New concepts and methods of reconstructing phylogeny and developing classifications must be sought. Most important is incorporation of genetic-based evolutionary divergence within lineages for purposes of grouping and ranking.
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Tod F. StuessyExploring Alternative Systems of Classification
http://scholarship.claremont.edu/aliso/vol15/iss2/5
http://scholarship.claremont.edu/aliso/vol15/iss2/5Wed, 07 Dec 2016 15:26:55 PST
Classification involves the development of a system of naming clades that can represent evolutionary relationships accurately and concisely. Using the acid-loving heath plants (Ericales) as an example, one can explore the application of different classification methods. The Linnean system of naming retains the traditional hierarchical framework (named ranks) and allows for the application of many cuqently used names. The "phylogenetic systematic" approach recommends the removal of an absolute hierarchy but allows retention of traditionally used endings such as -aceae. Historical usage of these names can lead to confusion when the names are used within a discussion or text, especially when a cladogram is not presented at the same time. Another method is suggested that removes the Linnean endings and adds the same ending (ina) to all clade names. This effectively eliminates absolute rank and clearly indicates that the group name represents a clade. The names used in this method and the "phylogenetic systematic" method do not indicate relative rank. Numbering systems and indentation are two ways in which relative rank has been conveyed. Indented lists have been the preferred method, often in combination with suffixes that indicate absolute rank. If absolute rank is eliminated, relative rank can still be reflected by indentation as in the "phylogenetic systematic" method. Relative rank can be conveyed by always presenting a cladogram in conjunction with a classification. In practice, relative rank is also effectively communicated within the context of discussion, thus a precise system of indicating relative rank within a formal classification may not be necessary.
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Kathleen A. KronProblems in Cladistic Classification: Higher-Level Relationships in Land Plants
http://scholarship.claremont.edu/aliso/vol15/iss2/4
http://scholarship.claremont.edu/aliso/vol15/iss2/4Wed, 07 Dec 2016 15:26:51 PST
Recent cladistic analyses of green plants recognize an extensive hierarchical series of relatively well-supported monophyletic groups. Translating this hierarchical pattern of relationships into a usable and informative written classification is important for purposes of scientific communication, research and teaching. However, in the context of the "Linnean" hierarchy, as manifested in the current International code of Botanical Nomenclature (ICBN), effecting this translation confronts substantial practical difficulties--especially the proliferation of hierarchical levels. These problems are exacerbated by the current emphasis of the ICBN on a hierarchy in which different ranks have different formal rank-based endings. These difficulties could be ameliorated by de-emphasizing the importance of ranks in the ICBN and relaxing the constraints on how they are treated, especially at the higher taxonomic levels. Modifications are needed that permit a more straightforward integration of systematic knowledge and botanical nomenclature, and at the same time foster increased stability in the association between names and the groups of organisms that they designate.
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Peter R. Crane et al.Hierarchial Roots and Shoots or Opera Jehovae Magna! (PSALMS 111:2)
http://scholarship.claremont.edu/aliso/vol15/iss2/3
http://scholarship.claremont.edu/aliso/vol15/iss2/3Wed, 07 Dec 2016 15:26:48 PST
The philosophy of Linnaeus's classification, Systema Naturae, is briefly reviewed, as well as those of post-Linnaean systems of plant classification. Texts of current codes of nomenclature pertaining to hierarchy, including associated rank terminations, are compared.
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Dan H. NicolsonIntroduction
http://scholarship.claremont.edu/aliso/vol15/iss2/2
http://scholarship.claremont.edu/aliso/vol15/iss2/2Wed, 07 Dec 2016 15:26:44 PSTJ. Mark PorterFront Matter 15 (2)
http://scholarship.claremont.edu/aliso/vol15/iss2/1
http://scholarship.claremont.edu/aliso/vol15/iss2/1Wed, 07 Dec 2016 15:26:41 PSTBack Matter 15 (1)
http://scholarship.claremont.edu/aliso/vol15/iss1/7
http://scholarship.claremont.edu/aliso/vol15/iss1/7Wed, 07 Dec 2016 15:26:35 PSTPhylogeny of Polemoniaceae Based on Nuclear Ribosomal Internal Transcribed Spacer DNA Sequences
http://scholarship.claremont.edu/aliso/vol15/iss1/6
http://scholarship.claremont.edu/aliso/vol15/iss1/6Wed, 07 Dec 2016 15:26:32 PST
Nuclear ribosomal internal transcribed spacer (ITS) DNA sequences are used to estimate the phylogeny of 53 members of Polemoniaceae, representing all but two genera of the family. Fitch parsimony analysis of equal-weighted nucleotide sites result in 1080 minimal-length trees. However, when alignment-ambiguous positions are removed and an II: 10 transition to transversion weighting is imposed only eight trees are found. These data are used to address two issues: I) patterns of diversification in Polemoniaceae, and 2) the circumscription and monophyly of the genus Gilia. Although the monophyly of Polemoniaceae is well supported, relationships inferred among the earliest diverging lineages are altered by character weighting, treatment of indels, and taxon inclusion. In spite of the lack of reliable resolution at the basal nodes, ITS data provide evidence that Gilia, as currently interpreted, is polyphyletic and comprises at least five independent lineages.
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J. Mark PorterWood Anatomy of Buddlejaceae
http://scholarship.claremont.edu/aliso/vol15/iss1/5
http://scholarship.claremont.edu/aliso/vol15/iss1/5Wed, 07 Dec 2016 15:26:28 PST
Quantitative and qualitative data are presented for 23 species of Buddleja and one species each of Emorya, Nuxia, and Peltanthera. Although crystal distribution is likely a systematic feature of some species of Buddleja, other wood features relate closely to ecology. Features correlated with xeromorphy in Buddleja include strongly marked growth rings (terminating with vascular tracheids), narrower mean vessel diameter, shorter vessel elements, greater vessel density, and helical thickenings in vessels. Old World species of Buddleja cannot be differentiated from New World species on the basis of wood features. Emorya wood is like that of xeromorphic species of Buddleja. Lateral wall vessel pits of Nuxia are small (2.5 ILm) compared to those of Buddleja (mostly 5-7 ILm) . Peltanthera wood features can also be found in Buddleja or Nuxia; Dickison's transfer of Sanango from Buddlejaceae to Gesneriaceae is justified. All wood features of Buddlejaceae can be found in families of subclass Asteridae such as Acanthaceae, Asteraceae, Lamiaceae, Myoporaceae, Scrophulariaceae, and Verbenaceae. Wood anatomy of Buddlejaceae relates to species ecology and size of wood sample, and is not useful in demonstrating that Buddlejaceae are closer to any particular one of these families; such evidence must be sought in molecular data and elsewhere.
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Sherwin CarlquistAdditions to the Vascular Flora of San Clemente Island, Los Angeles County, California, with Notes on Clarifications and Deletions
http://scholarship.claremont.edu/aliso/vol15/iss1/4
http://scholarship.claremont.edu/aliso/vol15/iss1/4Wed, 07 Dec 2016 15:26:25 PST
The number of vascular plant taxa reported from San Clemente Island, California, is briefly summarized. Recent additions to the vascular flora are presented and, with one exception, representative voucher specimens are cited as substantiation. Of the taxa di scussed, 68 are previously unreported taxa, and six are substantiations of previously dubious reports. An additional dozen taxa are cited in relation to clarifications or deletions. Based on current knowledge, we estimate the known flora to consist of 396 species with an additional 19 infraspecific taxa represented. Of these 415 taxa, 69.2% (272 speciesl15 additional subspecies or varieties) are considered indigenous to the island.
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Timothy S. Ross et al.Uncinia (Cyperaceae) of Ecuador
http://scholarship.claremont.edu/aliso/vol15/iss1/3
http://scholarship.claremont.edu/aliso/vol15/iss1/3Wed, 07 Dec 2016 15:26:18 PST
Nine species of Uncinia (Cyperaceae: Caricoideae) are recorded from Ecuador, one of which, U. ecuadorensis, is newly described and illustrated here. Descriptions, illustrations, distribution maps, and both artificial and vegetative keys are provided for the nine species, and for some uncinias additional taxonomic, phytogeographic and ecological comments are made. A lectotype is designated for the name U. lenuis.
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Gerald A. Wheeler et al.Two New Species of Uncinia (Cyperaceae) from Chile
http://scholarship.claremont.edu/aliso/vol15/iss1/2
http://scholarship.claremont.edu/aliso/vol15/iss1/2Wed, 07 Dec 2016 15:26:15 PST
Two new species of Uncinia (Cyperaceae) are described from Chile. Both are local endemics, with U. chilensis known from VIII (Bío Bío) and IX (Araucanía) regións of central Chile and U. araucana from IX Región only.
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Gerald A. WheelerFront Matter 15 (1)
http://scholarship.claremont.edu/aliso/vol15/iss1/1
http://scholarship.claremont.edu/aliso/vol15/iss1/1Wed, 07 Dec 2016 15:26:12 PSTBack Matter 14 (1)
http://scholarship.claremont.edu/aliso/vol14/iss1/8
http://scholarship.claremont.edu/aliso/vol14/iss1/8Wed, 07 Dec 2016 15:25:58 PSTA New Combination in the Cactaceae of Baja California, Mexico
http://scholarship.claremont.edu/aliso/vol14/iss1/7
http://scholarship.claremont.edu/aliso/vol14/iss1/7Wed, 07 Dec 2016 15:25:55 PSTLee W. LenzA New Species of Hechita (Bromeliaceae, Pitcairnoideae) from the Cape Region, Baja California Sur, Mexico
http://scholarship.claremont.edu/aliso/vol14/iss1/6
http://scholarship.claremont.edu/aliso/vol14/iss1/6Wed, 07 Dec 2016 15:25:52 PSTHechtia gayii is described and illustrated and its relationship to other members of the genus is discussed.
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Lee W. LenzCorylophomyces, A New Dioecious Genus of Laboulbeniales on Corylophidae (Coleoptera)
http://scholarship.claremont.edu/aliso/vol14/iss1/5
http://scholarship.claremont.edu/aliso/vol14/iss1/5Wed, 07 Dec 2016 15:25:49 PST
A new dioecious genus of Laboulbeniaceae (Laboulbeniales), Corylophomyces, was established to accommodate five species parasitizing Corylophidae (Coleoptera; Cucujoidea): C. peyerimhoffii (≡Cryptandromyces peyerimhoffit); C. sericoderi (≡Autophagomyces sericoderi); C. sarawakensis (≡A. sarawakensis); and two new species, C. reflexus and C. weirii. A key to the taxa was given and all were illustrated with line drawings. Corylophomyces was placed in Amorphomycetinae sensu Tavares. The other genera included in this subtribe by Tavares in 1985, i.e., Amorphomyces, Dioicomyces, Nanomyces, Rhizopodomyces, and Tetrandromyces, were compared with one another and with the new genus.
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Richard K. BenjaminTrichomes of Nama (Hydrophyllaceae) That Produce Insect-active Compunds
http://scholarship.claremont.edu/aliso/vol14/iss1/4
http://scholarship.claremont.edu/aliso/vol14/iss1/4Wed, 07 Dec 2016 15:25:46 PSTNama hispidum,N. lobbii, N. rothrockii, and N. xylopodum have two basic types of trichomes on the adaxial and abaxial surfaces: glandular and nonglandular. Nama hispidum and N. xylopodum have (1) short semierect or intermediate-length acicular trichomes that often recurve toward the leaf surface and (2) short-stalked capitate glands. The larger acicular trichomes have micropapillae. Nama lobbii has long filiform trichomes and sessile capitate glands. Nama rothrockii has erect, smooth subulate trichomes and long-stalked capitate glands. Morphological diversity of trichomes in Nama and their possible functional significance as a predator defense are discussed.
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Bradley F. BinderPlants of the Tres Marias Islands, Nayarit, Mexico
http://scholarship.claremont.edu/aliso/vol14/iss1/3
http://scholarship.claremont.edu/aliso/vol14/iss1/3Wed, 07 Dec 2016 15:25:43 PSTLee W. LenzWood Anatomy of Caryophyllaceae: Ecological, Habital, Systematic, and Phylogenetic Implications
http://scholarship.claremont.edu/aliso/vol14/iss1/2
http://scholarship.claremont.edu/aliso/vol14/iss1/2Wed, 07 Dec 2016 15:25:37 PST
Wood of Caryophyllaceae is more diverse than has been appreciated. Imperforate tracheary elements may be tracheids, fiber-tracheids, or libriform fibers. Rays may be uniseriate only, multiseriate only, or absent. Roots of some species (and sterns of a few of those same genera) have vascular tissue produced by successive cambia. The diversity in wood anatomy character states shows a range from primitive to specialized so great that origin close to one of the more specialized families of Chenopodiales, such as Chenopodiaceae or Amaranthaceae, is unlikely. Caryophyllaceae probably branched from the ordinal clade near the clade's base, as cladistic evidence suggests. Raylessness and abrupt onset of multiseriate rays may indicate woodiness in the family is secondary. Successive cambia might also be a subsidiary indicator of secondary woodiness in Caryophyllaceae (although not necessarily dicotyledons at large). Although a small shrub, Gymnocarpos may be primitively woody, and because that genus appears primitive in many wood features the family as a whole may derive from woody ancestors, despite apparent secondary woodiness in many phylads. Systematic distribution of wood character states in the family corresponds closely to the Pax and Hoffmann system of three tribes and their progressive degrees of specialization (Paronychieae, Alsineae, Sileneae). Wood data support the idea that Caryophyllaceae represent a branch from near the base of the order Caryophyllales. Wood of Caryophyllaeeae is highly xeromorphic, comparable in quantitative vessel features to wood of desert shrubs; insular species have less xeromorphic wood. Instances of storying and druse presence in axial and ray parenchyma are newly reported for the family, as is the inverted orientation of xylem, phloem, and periderm produced by a cambium at the periphery of the pith in Dianthus caryophyllus.
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Sherwin CarlquistFront Matter 14 (1)
http://scholarship.claremont.edu/aliso/vol14/iss1/1
http://scholarship.claremont.edu/aliso/vol14/iss1/1Wed, 07 Dec 2016 15:25:34 PSTIntroduction to Model Spaces and their Operators
http://scholarship.claremont.edu/pomona_facbooks/44
http://scholarship.claremont.edu/pomona_facbooks/44Tue, 06 Dec 2016 16:57:31 PST
The study of model spaces, the closed invariant subspaces of the backward shift operator, is a vast area of research with connections to complex analysis, operator theory and functional analysis. This self-contained text is the ideal introduction for newcomers to the field. It sets out the basic ideas and quickly takes the reader through the history of the subject before ending up at the frontier of mathematical analysis. Open questions point to potential areas of future research, offering plenty of inspiration to graduate students wishing to advance further.

Self-contained chapters help graduate students and newcomers to follow the topics discussed

Provides historical background that sets model spaces in the context of complex analysis and operator theory

Allows the reader to fast-track to the latest developments in the field

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Stephan Ramon Garcia et al.Reducing Automobile Emissions in Southern California: The Dance of Public Policies and Technological Fixes
http://scholarship.claremont.edu/pitzer_fac_pub/178
http://scholarship.claremont.edu/pitzer_fac_pub/178Mon, 05 Dec 2016 14:06:45 PST
For many years I have taught at a small liberal arts college in Southern California. When first-year students arrived at the college in the early 1970s, they settled into the usual things that occupy freshmen. A few weeks would go by, and then they would make a remarkable discovery: tall mountains would appear to the north as autumn weather dissipated the heavy blanket of smog that had obscured them. Today, the air is not perfectly clear in September, but students are aware of the mountains from the day they move into the dormitories. The region's partial victory over smog illustrates the successful use of technological fixes for a problem that was itself caused by technology. But it also shows that technological fixes have to be complemented by appropriate policies if they are to be successful.
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Rudi VoltiTechnology and Commercial Air Travel
http://scholarship.claremont.edu/pitzer_facbooks/22
http://scholarship.claremont.edu/pitzer_facbooks/22Fri, 02 Dec 2016 10:00:45 PST
Rudi Volti explores the economical, political, cultural, and social events that propelled the technological advances of the airline industry. From more advanced airplanes to better security and safety, Volti also presents how the contributions of air travel have shaped the world that we live in today.
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Rudi VoltiTechnology Transfer and East Asian Economic Transformation
http://scholarship.claremont.edu/pitzer_facbooks/21
http://scholarship.claremont.edu/pitzer_facbooks/21Fri, 02 Dec 2016 10:00:42 PST
Rudi Volti explores how the transfer of foreign technologies contributed to the rapid development of the East Asian economies of China, Japan, Taiwan, and Korea.
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Rudi VoltiCars and Culture: The Life Story of a Technology
http://scholarship.claremont.edu/pitzer_facbooks/20
http://scholarship.claremont.edu/pitzer_facbooks/20Fri, 02 Dec 2016 10:00:38 PST
Presents a history of the automobile, and discusses the political, economic, social, cultural, and technological forces that have shaped the development of automobiles and the automobile industry.
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Rudi VoltiThe Facts On File Encyclopedia of Science, Technology, and Society
http://scholarship.claremont.edu/pitzer_facbooks/19
http://scholarship.claremont.edu/pitzer_facbooks/19Fri, 02 Dec 2016 10:00:33 PST
This three-volume reference presents science and technology in the context of historical and social dimensions. It deals not only with theories, discoveries, artifacts, and systems that have stood the test of time, but also with those that have failed. The book features approximately 900 entries.
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Rudi VoltiThe Engineer in History
http://scholarship.claremont.edu/pitzer_facbooks/18
http://scholarship.claremont.edu/pitzer_facbooks/18Fri, 02 Dec 2016 10:00:26 PST
Surveying more than two millennia, The Engineer in History presents the story of the designers and builders of aqueducts, cathedrals, clocks, machine tools, bridges, railroads, and airplanes. It examines their social origins, educations, working methods, relationships with employers, influences on management theory and practices, and many other topics. Throughout, the narrative focuses on particular engineers whose working lives exemplify the themes presented.
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Rudi Volti et al.Technology, Politics, and Society in China
http://scholarship.claremont.edu/pitzer_facbooks/17
http://scholarship.claremont.edu/pitzer_facbooks/17Fri, 02 Dec 2016 10:00:23 PST
Westview special studies on China and East Asia.
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Rudi Volti