bluuebunny/crossref_metadata_2025_split huggingface dataset:
Opinion Leadership Amongst Leading Edge Users
Authors: Morrison Pamela D. , Roberts John H. , Midgley David F. 
Published: July 2010

Leading Edge Users have been attracting increasing attention in the study of innovation. Their effect is hypothesised to be threefold: in the development of new product concepts; their role in early adoption and thus cash flows for the firm; and acting as a catalyst for the diffusion process. Urban and von Hippel (1988) demonstrate the first, Morrison, Roberts and Midgley (1998) test the second. In this paper we examine the degree of opinion leadership that Leading Edge Users (LEUs) have so we can estimate their potential to do the third. This paper shows that Leading Edge Status (LES) is related to opinion leadership as long as the organisation is well connected to the network. We found strong evidence that organisations with high LES were more likely to play a bridging role with organisations outside the industry than were Innovators (measured by Rogers’ time of adoption). This implies that LEUs are extremely useful in bringing information about technology into the industry from outside. When this is added to the Opinion Leadership role of LEUs, it is seen that they can play a positive role in speeding up the diffusion process.
Creativity in Print Advertising: A Test of the Remote Associate Matching Model
Authors: Ang Lawrence 
Published: July 2010

The aim of this paper is to test a structural model of creativity in print advertising called the Remote Associate Matching (RAM) model. This model states that the essence of creativity lies in being able to associate seemingly remote, or unusual ideas together, such that they are linked to the attribute or benefit of the advertised product. Three essential components of the RAM model are the conveyor (ie. the unusual picture in the ad), the product-representation (ie. the advertised product or service), and the attribute-benefit prompt (ie. the headline or copy). The main hypothesis is that the more remote the ad, the more likely it is perceived to be creative, provided the target audience can make the attribute or benefit link between the conveyor (ie. the unusual picture in the ad) and the product-representation (ie. the advertised product or service). In an experiment using 6 print ads for two product categories, three levels of remoteness and two levels of resolution were manipulated. The predicted effect was consistently found across two product categories, thus supporting the new theory.
Biochemical markers of nutritional status and childhood malaria severity in Cameroon
Authors: Pankoui Mfonkeu Joël Bertrand , Gouado Inocent , Fotso Kuaté Honoré , Zambou Odile , Combes Valéry , Raymond Grau Georges Emile , Amvam Zollo Paul Henri 
Published: July 2010

To investigate the part played by undernutrition in malaria severity, some biomarkers of nutritional status were assessed in children with severe malarial anaemia (MA) and cerebral malaria (CM) in comparison with healthy children or those with uncomplicated malaria. Undernutrition was assessed using the weight-for-ageZscore (WAZ). Retinol was determined by HPLC; lipid profile, Ca, Mg and albumin were determined by spectrophotometry. Severe and moderate undernutritions were more prevalent in children with MA and those with the combined symptoms of CM and MA, but not in those with CM alone. Some perturbations were noticed in the lipid profile, but most of the values remained within the normal ranges. The risk of vitamin A deficiency, as assessed by plasma retinol concentration, was noteworthy in children with severe malaria: 0·48 × 10− 6and 0·50 × 10− 6 mol/l, respectively, in children with MA and CM (reference value: >0·7 × 10− 6 mol/l). A significant difference was obtained for retinol values after an ANOVA of all the groups (P = 0·0029), with the value in the MA group being significantly low than that in the control group (P < 0·05); likewise, a significant difference was obtained after comparison of all the groups for Mg and albumin (P = 0·0064 and 0·0082, respectively). Despite their low number (n6), fatal cases of CM had a normal mean WAZ on admission, but low values of retinol, albumin and HDL:LDL ratio. Despite these associations, undernutrition itself did not appear to be a primary factor associated with fatal outcome.
Antidiabetic effects of bitter gourd extracts in insulin-resistant db/db mice
Authors: Klomann Sandra D. , Mueller Andreas S. , Pallauf Josef , Krawinkel Michael B. 
Published: July 2010

Bitter gourd (BG,Momordica charantia) exerts proven blood glucose- and body weight-lowering effects. To develop an effective and safe application, it is necessary to identify the bioactive compounds and biochemical mechanisms responsible for these effects in type 2 diabetes. A total of forty-five 4-week-old male db/db mice were assigned to five groups of nine each. The mice were given sterile tap water as a control, a whole fruit powder, the lipid fraction, the saponin fraction or the hydrophilic residue of BG at a daily oral dosage of 150 mg/kg body weight for 5 weeks, respectively. Weight gain was significantly decreased in all the BG-treated groups (P ≤ 0·05). Glycated Hb levels were the highest in the control mice compared with all the four BG-treated mice (P = 0·02). The lipid fraction had the strongest effect, and it tended (P = 0·075) to reduce glycated Hb levels from 9·3 % (control mice) to 8·0 % (lipid fraction-treated mice). The lipid and saponin fractions reduced lipid peroxidation of adipose tissue significantly (P ≤ 0·01). Additionally, the saponin fraction and the lipid fraction reduced protein tyrosine phosphatase 1B (PTP 1B) activity in skeletal muscle cytosol by 25 % (P = 0·05) and 23 % (P = 0·07), respectively. PTP 1B is the physiological antagonist of the insulin signalling pathway. Inhibition of PTP 1B increases insulin sensitivity. This is the first study to demonstrate that BG is involved in PTP 1B regulation, and thus explains one possible biochemical mechanism underlying the antidiabetic effects of BG in insulin resistance and type 2 diabetes.
Sulfur volatiles from Allium spp. affect Asian citrus psyllid, Diaphorina citri Kuwayama (Hemiptera: Psyllidae), response to citrus volatiles
Authors: Mann R.S. , Rouseff R.L. , Smoot J.M. , Castle W.S. , Stelinski L.L. 
Published: July 2010

AbstractThe Asian citrus psyllid, Diaphorina citri Kuwayama, vectors Candidatus Liberibacter asiaticus (Las) and Candidatus Liberibacter americanus (Lam), the presumed causal agents of huanglongbing. D. citri generally rely on olfaction and vision for detection of host cues. Plant volatiles from Allium spp. (Alliaceae) are known to repel several arthropod species. We examined the effect of garlic chive (A. tuberosum Rottl.) and wild onion (A. canadense L.) volatiles on D. citri behaviour in a two-port divided T-olfactometer. Citrus leaf volatiles attracted significantly more D. citri adults than clean air. Volatiles from crushed garlic chive leaves, garlic chive essential oil, garlic chive plants, wild onion plants and crushed wild onion leaves all repelled D. citri adults when compared with clean air, with the first two being significantly more repellent than the others. However, when tested with citrus volatiles, only crushed garlic chive leaves and garlic chive essential oil were repellent, and crushed wild onions leaves were not.Analysis of the headspace components of crushed garlic chive leaves and garlic chive essential oil by gas chromatography-mass spectrometry revealed that monosulfides, disulfides and trisulfides were the primary sulfur volatiles present. In general, trisulfides (dimethyl trisulfide) inhibited the response of D. citri to citrus volatiles more than disulfides (dimethyl disulfide, allyl methyl disulfide, allyl disulfide). Monosulfides did not affect the behaviour of D. citri adults. A blend of dimethyl trisulfide and dimethyl disulfide in 1:1 ratio showed an additive effect on inhibition of D. citri response to citrus volatiles. The plant volatiles from Allium spp. did not affect the behaviour of the D. citri ecto-parasitoid Tamarixia radiata (Waterston). Thus, Allium spp. or the tri- and di-sulphides could be integrated into management programmes for D. citri without affecting natural enemies.
A review ofPachyvaranus crassispondylusArambourg, 1952, a pachyostotic marine squamate from the latest Cretaceous phosphates of Morocco and Syria
Authors: HOUSSAYE ALEXANDRA , BARDET NATHALIE , RAGE JEAN-CLAUDE , PEREDA SUBERBIOLA XABIER , BOUYA BAÂDI , AMAGHZAZ MBAREK , AMALIK MOHAMED 
Published: July 2010

AbstractThe discovery of new specimens ofPachyvaranus crassispondylusArambourg, 1952 from the Maastrichtian phosphates of Morocco and Syria enables us to (1) redescribe in detail this poorly known varanoid lizard, (2) provide a more detailed diagnosis and (3) re-evaluate the systematic affinities of this taxon within squamates. The latter is placed in Pachyvaranidae nov., considered a new unranked clade of non-pythonomorph Varanoidea. The intense pachyosteosclerosis observed in the vertebrae and ribs suggests a primarily aquatic mode of life forPachyvaranus. This is in accordance with the sedimentological context (shallow marine environment). As for its palaeobiogeographical distribution,Pachyvaranusis a component of the marine reptile assemblages from the southern margin of the Mediterranean Tethys, around palaeolatitudes 20° N. The osteoderms previously referred to this taxon by Arambourg are reanalysed and assigned to a teleost fish.
Compliance among weak states: Africa and the counter-terrorism regime
Authors: WHITAKER BETH ELISE 
Published: July 2010

AbstractThis article examines levels of compliance with the counter-terrorism regime in Africa, where weak states might have been expected to conform. Instead, even under American pressure, some governments have seized the anti-terrorism rhetoric while others have been more reluctant. A comparative analysis of Kenya, Tanzania, and Uganda demonstrates that domestic political factors largely explain this variation; compliance is highest in countries with the least democratic institutions and minimal mobilisation of domestic constituencies. Aid dependence and the perception of a terrorist threat also play a role. To the extent that popular pressures in transitional democracies reduce compliance, the article raises questions about the legitimacy and effectiveness of the counter-terrorism regime.
Do newly formed word representations encode non-criterial information?
Authors: CURTIN SUZANNE 
Published: July 2010

ABSTRACTLexical stress is useful for a number of language learning tasks. In particular, it helps infants segment the speech stream and identify phonetic contrasts. Recent work has demonstrated that infants aged 1 ; 0 can learn two novel words differing only in their stress pattern. In the current study, we ask whether infants aged 1 ; 0 store stress information in their representations of words even when it not required for the task. To this end, we taught infants novel, three-syllable word–object pairings. At test, we manipulated the word by presenting infants with forms that shared the stress pattern of the familiar words but differed in the segments, and forms that shared the segments of the familiar word but differed in the stress pattern. Our findings reveal that infants' representations of new words include word-level stress information and do not simply contain the information critical for distinguishing between different forms.
Automated termination analysis for logic programs with cut
Authors: SCHNEIDER-KAMP PETER , GIESL JÜRGEN , STRÖDER THOMAS , SEREBRENIK ALEXANDER , THIEMANN RENÉ 
Published: July 2010

AbstractTermination is an important and well-studied property for logic programs. However, almost all approaches for automated termination analysis focus on definite logic programs, whereas real-world Prolog programs typically use the cut operator. We introduce a novel pre-processing method which automatically transforms Prolog programs into logic programs without cuts, where termination of the cut-free program implies termination of the original program. Hence after this pre-processing, any technique for proving termination of definite logic programs can be applied. We implemented this pre-processing in our termination prover AProVE and evaluated it successfully with extensive experiments.
Swapping evaluation: A memory-scalable solution for answer-on-demand tabling
Authors: DE GUZM'AN PABLO CHICO , CARRO MANUEL , WARREN DAVID S. 
Published: July 2010

AbstractOne of the differences among the various approaches to suspension-based tabled evaluation is the scheduling strategy. The two most popular strategies arelocalandbatchedevaluation. The former collects all the solutions to a tabled predicate before making any one of them available outside the tabled computation. The latter returns answers one by one before computing them all, which in principle is better if only one answer (or a subset of the answers) is desired. Batched evaluation is closer to SLD evaluation in that it computes solutions lazily as they are demanded, but it may need arbitrarily more memory than local evaluation, which is able to reclaim memory sooner. Some programs which in practice can be executed under the local strategy quickly run out of memory under batched evaluation. This has led to the general adoption of local evaluation at the expense of the more depth-first batched strategy. In this paper we study the reasons for the high memory consumption of batched evaluation and propose a new scheduling strategy which we have termedswapping evaluation. Swapping evaluation also returns answers one by one before completing a tabled call, but its memory usage can be orders of magnitude less than batched evaluation. An experimental implementation in the XSB system shows that swapping evaluation is a feasible memory-scalable strategy that need not compromise execution speed.
Inference with constrained hidden Markov models in PRISM
Authors: CHRISTIANSEN HENNING , HAVE CHRISTIAN THEIL , LASSEN OLE TORP , PETIT MATTHIEU 
Published: July 2010

AbstractA Hidden Markov Model (HMM) is a common statistical model which is widely used for analysis of biological sequence data and other sequential phenomena. In the present paper we show how HMMs can be extended with side-constraints and present constraint solving techniques for efficient inference. Defining HMMs with side-constraints in Constraint Logic Programming has advantages in terms of more compact expression and pruning opportunities during inference. We present a PRISM-based framework for extending HMMs with side-constraints and show how well-known constraints such as cardinality and all_different are integrated. We experimentally validate our approach on the biologically motivated problem of global pairwise alignment.
A translational approach to constraint answer set solving
Authors: DRESCHER CHRISTIAN , WALSH TOBY 
Published: July 2010

AbstractWe present a new approach to enhancing Answer Set Programming (ASP) with Constraint Processing techniques which allows for solving interesting Constraint Satisfaction Problems in ASP. We show how constraints on finite domains can be decomposed into logic programs such that unit-propagation achieves arc, bound or range consistency. Experiments with our encodings demonstrate their computational impact.
Catching the Ouroboros: On debugging non-ground answer-set programs
Authors: OETSCH JOHANNES , PÜHRER JÖRG , TOMPITS HANS 
Published: July 2010

AbstractAn important issue towards a broader acceptance of answer-set programming (ASP) is the deployment of tools which support the programmer during the coding phase. In particular, methods fordebuggingan answer-set program are recognised as a crucial step in this regard. Initial work on debugging in ASP mainly focused on propositional programs, yet practical debuggers need to handle programs with variables as well. In this paper, we discuss a debugging technique that is directly geared towards non-ground programs. Following previous work, we address the central debugging question why some interpretation is not an answer set. The explanations provided by our method are computed by means of a meta-programming technique, using a uniform encoding of a debugging request in terms of ASP itself. Our method also permits programs containing comparison predicates and integer arithmetics, thus covering a relevant language class commonly supported by all state-of-the-art ASP solvers.
Testing and debugging techniques for answer set solver development
Authors: BRUMMAYER ROBERT , JÄRVISALO MATTI 
Published: July 2010

AbstractThis paper develops automated testing and debugging techniques for answer set solver development. We describe a flexible grammar-based black-box ASP fuzz testing tool which is able to reveal various defects such as unsound and incomplete behavior, i.e. invalid answer sets and inability to find existing solutions, in state-of-the-art answer set solver implementations. Moreover, we develop delta debugging techniques for shrinking failure-inducing inputs on which solvers exhibit defective behavior. In particular, we develop a delta debugging algorithm in the context of answer set solving, and evaluate two different elimination strategies for the algorithm.
Anisotropy of magnetic susceptibility fabrics in syntectonic plutons as tectonic strain markers: the example of the Canso pluton, Meguma Terrane, Nova Scotia
Authors: Benn Keith 
Published: July 2010

ABSTRACTThe anisotropy of magnetic susceptibility (AMS) is widely and routinely used to measure the preferred orientations of Fe-rich minerals in undeformed and weakly deformed granite plutons. The interpretation of the mapped AMS fabrics depends on rock-textural observations, on the map patterns of the fabrics in plutons, and on comparisons of the pluton fabrics to tectonic structures in the country rocks. The AMS may document emplacement-flow related fabrics, but the emplacement fabrics may be reworked or completely overprinted by rather weak tectonic strains of the magma mush or the cooling pluton, especially in syntectonic intrusions. The Late Devonian Canso granite pluton is an excellent example of overprinting of emplacement fabrics by weak tectonic strains. The Canso pluton was emplaced ca. 370 Ma along the boundary between the Meguma and Avalon tectonic terranes, in the northern Appalachian orogen. The AMS was mapped along two traverses that cross the pluton and that are perpendicular to the terrane boundary. Textural evidence suggests the rocks underwent very modest post-full crystallisation strains. The AMS records the dextral transcurrent shearing that occurred on the terrane boundary during emplacement and cooling of the Canso pluton, supporting interpretations that weakly deformed syntectonic granites can be used as indicators of regional bulk kinematics. AMS fabrics in Late Devonian granites of the Meguma Terrane suggest partitioning of the non-coaxial shearing into the terrane bounding fault, with pure-shear dominated deformation further from the fault. Numerical simulations suggest that the kinematics recorded by the fabrics in the Canso pluton was simple-shear, or transpression or transpression with small components of pure shear oriented perpendicular to the bounding shear zone.
Granite formation: Stepwise accumulation of melt or connected networks?
Authors: Bons Paul D. , Becker Jens K. , Elburg Marlina A. , Urtson Kristjan 
Published: July 2010

ABSTRACTSeveral authors have proposed that granitic melt accumulation and transport from the source region occurs in networks of connected melt-filled veins and dykes. These models envisage the smallest leucosomes as ‘rivulets’ that connect to feed larger dykes that form the ‘rivers’ through which magma ascends through the sub-solidus crust. This paper critically reviews this ‘rivulets-feeding-rivers’ model. It is argued that such melt-filled networks are unlikely to develop in nature, because melt flows and accumulates well before a fully connected network can be established. In the alternative stepwise accumulation model, flow and accumulation is transient in both space and time. Observations on migmatites at Port Navalo, France, that were used to support the existence of melt-filled networks are discussed and reinterpreted. In this interpretation, the structures in these migmatites are consistent with the collapse and draining of individual melt batches, supporting the stepwise accumulation model.
Trace element constraints on mid-crustal partial melting processes – A garnet ionprobe study from polyphase migmatites (Damara orogen, Namibia)
Authors: Jung C. , Jung S. , Hellebrand E. , Hoffer E. 
Published: July 2010

ABSTRACTTrace element abundances in garnet from a polyphase migmatite were measured by secondary ion mass spectrometry (SIMS) in order to identify some of the effective variables on the trace element distribution between garnet and melanosome or leucosome. In general, garnet is zoned with respect to REE, in which garnet cores are enriched by a factor of 2–3 relative to the rims. For an inclusion-rich garnet from the melanosome, equilibrium distribution following a simple Rayleigh fractionation is responsible for the decreasing concentrations in REE from core to rim. Inclusion-poor garnet from the same melanosome located in the vicinity of the leucosomes shows distinct enrichment and depletion patterns for REE from core to rim. These features suggest disequilibrium between garnet and the host rock which, in this case, could have been an in-situ derived melt. This would probably indicate a period of open-system behaviour at a time when the garnet, originally nucleated in the metamorphic environment reacted with the melt. In addition, non-gradual variation in trace element abundances between core and rim may suggest variable garnet growth rates. Inclusion-free garnet from the leucosome, interpreted to have crystallised in the presence of a melt, has a small core with high REE abundances and a broad rim with lower REE abundances. Here, crystal-liquid diffusion-controlled partitioning is a likely process to explain the trace element variation.
Plutonism versus Neptunism at the southern tip of Africa: the debate on the origin of granites at the Cape, 1776–1844
Authors: Master Sharad 
Published: July 2010

ABSTRACTThe Cape Granites are a granitic suite intruded into Neoproterozoic greywackes and slates, and unconformably overlain by early Palaeozoic Table Mountain Group orthoquartzites. They were first recognised at Paarl in 1776 by Francis Masson, and by William Anderson and William Hamilton in 1778. Studies of the Cape Granites were central to some of the early debates between the Wernerian Neptunists (Robert Jameson and his former pupils) and the Huttonian Plutonists (John Playfair, Basil Hall, Charles Darwin), in the first decades of the 19th Century, since it is at the foot of Table Mountain that the first intrusive granites outside of Scotland were described by Hall in 1812. The Neptunists believed that all rocks, including granite and basalt, were precipitated from the primordial oceans, whereas the Plutonists believed in the intrusive origin of some igneous rocks, such as granite. In this paper, some of the early descriptions and debates concerning the Cape Granites are reviewed, and the history of the development of ideas on granites (as well as on contact metamorphism and sea level changes) at the Cape in the late 18th Century and early to mid 19th Century, during the emerging years of the discipline of geology, is presented for the first time.