bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Phase Diagram of the Two-Dimensional t-J Model from High Temperature Expansions
Authors: Putikka W.O. , Luchini M.U. , Rice T.M. 
Published: November 2004

The phase diagram of the 2D t-J model has been investigated using high temperature expansions. Series for the Helmholtz free energy, the inverse compressibility, the chemical potential and the uniform spin susceptibility through tenth order on a square lattice have been calculated using the finite cluster method.1 The series are analytically continued beyond their radius of convergence by Padé and integral approximants. The most accurate extrapolations can be made for the Helmholtz free energy where for J/t≈0.3 and n≈0.9 we can reach T~t/5. We can test the accuracy of the continuation methods by comparing with the 1D results for the boundary of phase separation of Ogata et al.2 In 2D a region of phase separation was found at T=0 for J/t lying above a line extending from J/t=3.8 at zero filling to J/t=1.2 at half filling. No phase separation was found at very small J/t contrary to the earlier suggestion of Emery et al3 which was based on results from exact diagonalisation on 4×4 clusters but in agreement with Quantum Monte Carlo (QMC) calculations on the Hubbard model.4 For very small J/t near half filling where the Nagaoka effect is possible, we find a region of divergent uniform magnetic susceptibility at T=0. However the divergence is very weak when compared with the exponential behaviour expected from a 2D ferromagnet. This might imply a substantially reduced moment which is consistent with the recent QMC estimates of Zhang et al.5
TDPAC STUDY OF COMPLEX STRUCTURE SEMICONDUCTOR COMPOUNDS — THE CASE OF NIOBIUM PENTOXIDE
Authors: SHITU J. , RENTERÍA M. , MASSOLO C.P. , BIBILONI A.G. , DESIMONI J. 
Published: November 2004

A new method for analysing Time-Differential Perturbed Angular Correlation spectra is presented and applied to study the hyperfine interaction of 100 Rh in the high temperature modification of niobium pentoxide. The measured quadrupole interactions are assigned to about 80% of the radiactive probes replacing niobium atoms in the lattice and about 20% located in perturbed sites. The origin of this perturbation, producing a high frequency component in the measured spectra is discussed and temptatively assigned to remaining radiation damage in the compound. The hyperfine interaction of 111 Cd probes, introduced through thermal diffusion into niobium pentoxide, is also presented. The temperature dependence of the hyperfine parameters in this case is studied in the temperature range RT-800°C. The spectral analysing method employed allows a direct comparison of experimental data with point charge model calculations and a simultaneous evaluation of the antishielding factor β. The obtained values (27 for 100 Rh and 15 for 111 Cd ) are discussed in terms of the compound and probe’s characteristics.
DESIGN AND DEVELOPMENT OF FLOW BASED ELECTRO-RHEOLOGICAL DEVICES
Authors: BROOKS D. A. 
Published: November 2004

The foundations for the design of electro-rheological (ER) actuating devices that use Poiseuille flow are laid. Systems of measurement to assess ER fluids are described including a high pressure flow apparatus. This was used to examine alternative valve geometries and fluids. A method is shown for the reduction of basic flow data to excess shear stress and shear rate. Standard actuator arrangements are reviewed before the design of a flying control surface servomechanism is discussed. The evaluation of this validates the methods and indicates that the forces developed are within striking distance of those required for operational systems.
AN EFFICIENT HEURISTIC METHOD FOR STATE ASSIGNMENT OF LARGE SEQUENTIAL MACHINES
Authors: JÓŹWIAK LECH 
Published: November 2004

VLSI circuit design is a “trial and error” process that consists of solving a number of design problems. An optimal state assignment is one of the most important problems in the logic synthesis for sequential machines and it consists of choosing a binary representation for symbolic internal states of a sequential machine, so that the resulting logic is optimal for a given objective. This problem belongs to the class of most complex computational problems in VLSI design – it is NP hard. In a strict sense, it has never been solved, except for exhaustive search, which is impossible for large machines even with a computer. A structural heuristic approach uses specific knowledge about the structure of a given problem in order to reduce the search space to a manageable size and to maintain high quality solutions at the same time. Using the state assignment problem as an example, we determined the importance of the structural heuristic approach in CAD for VLSI and we showed how to search for suitable heuristics. We discussed a new heuristic method for state assignments concentrating on heuristic aspects such as: the solution space, the generation procedure and its operators, the evaluation functions etc. We provided some experimental results to show that the new method is very efficient. The structural heuristic search can be highly efficient. Its efficiency is limited more by the capacity of the human brain to think heuristically than by the complexity of the problem itself.
CRITERIA FOR COMPARING REUSE-ORIENTED DOMAIN ANALYSIS APPROACHES
Authors: WARTIK STEVEN , PRIETO-DÍAZ RUBÉN 
Published: November 2004

Domain analysis, while still relatively new, has matured to the point where it is beginning to appear in production settings. This raises the problem of how to select among proposed approaches. Domain analysis approaches possess some similarities but differ in many ways — some subtle, some significant, some uninteresting. Comparing them is not simple. This paper presents criteria for comparing and contrasting domain analysis approaches. The criteria were derived by studying five approaches that seem representative. The criteria attempt to provide a common conceptual ground for comparing and contrasting different ways to undertake domain analysis. The criteria are studied in terms of external factors that determine how and why an organization should use domain analysis. The criteria are first presented independent of any approach. They are then applied to the five approaches, to illustrate characteristics the approaches possess, and to show what some of the approaches' merits are. The paper concludes with some thoughts on the implications of the criteria for the future of domain analysis, considering in particular the likelihood of a single, unified approach emerging.
LEARNING FROM EXAMPLES IN UNIVERSE OF DISCOURSE DESCRIBED BY A SET OF EQUATIONS
Authors: KOUNALIS EMMANUEL 
Published: November 2004

Generalization is an important operation for programs that learn. Anti-unification guarantees the existence of a term which is the most specific generalization of a collection of terms. This provides a formal basis for learning from examples. However, such generalization may be "too" general and therefore counterexamples are required to restrict them. In this case, the learner has to check whether the resulting formula provides a concept to learn, i.e. whether a formula of the form t/{t1,…,tn} is a generalization, where t is viewed as a generalization of a set of examples and t1,…,tn are counterexample. The formula t/{t1,…,tn} is often called an implicit representation. The implicit representation t/{t1,…,tn} is a generalization iff there exist ground (variable-free) instances of t which are not instances of t1,…,tn. This is a non-trivial task even when there is no background knowledge (see [15]). We present here a method to check whether an implicit representation t/{t1,…,tn} is a generalization with respect to a finite set of equations which describes the background knowledge problem, i.e. whether there exists a ground instance of t which is not equivalent to any ground instance of t1,…,tn with respect to a set E of equations. Whereas this problem is in general undecidable since the equality is so, we show in this paper that in this case where the set E of equations is compiled into a ground convergent term rewriting system, we can discover concepts in Universe of Discourse with background knowledge described by a finite set of equations. We show how the method applies to induce concepts in theories of elementary arithmetic.
Infrared and Raman spectra of ZrSiO4 experimentally shocked at high pressures
Authors: Gucsik A. , Zhang M. , Koeberl C. , Salje E. K. H. , Redfern S. A. T. , Pruneda J. M. 
Published: November 2004

AbstractZircon- and reidite-type ZrSiO4 produced by shock recovery experiments at different pressures have been studied using infrared (IR) and Raman spectroscopy. The v3 vibration of the SiO4 group in shocked natural zircon shows a spectral change similar to that seen in radiation-damaged zircon: a decrease in frequency and increase in linewidth. The observation could imply a possible similar defective crystal structure between the damaged and shocked zircon. The shock-pressure-induced structural phase transition from zircon (I41/amd) to reidite (I41/a) is proven by the occurrence of additional IR and Raman bands. Although the SiO4 groups in both zircon- and reidite-ZrSiO4 are isolated, the more condensed scheelite gives rise to Si–O stretching bands at lower frequencies, suggesting a weakening of the bond strength. Low-temperature IR data of the reidite-type ZrSiO4 show an insignificant effect of cooling on the phonon modes, suggesting that the structural response of reidite to cooling-induced compression is weak and its thermal expansion is very small.
Quantum mechanical study of Al/Si disorder in leucite and bicchulite
Authors: Winkler B. , Milman V. , Pickard C. J. 
Published: November 2004

AbstractWe have studied the structures of Al/Si disordered leucite and bicchulite with a quantum mechanical version of the virtual crystal approximation, VCA. In leucite, the average tetrahedron has a composition of (AlSi2)O4, while bicchulite represents an extreme case with (Al2Si)O4tetrahedra. Both structures are well described with the VCA. In conjunction with an earlier study, where we have shown that the (AlSi)O4tetrahedra in gehlenite and Al,Si-disordered octahedra are also well reproduced, we have now established that the VCA gives a reliable description of the averaged structure of disordered aluminosilicates over the whole compositional range. The current calculations confirm that Al/Si ordering is not driving the cubic to tetragonal phase transformation in leucite. In bicchulite, the model calculations are consistent with hydrogen on Wyckoff position 8c, in agreement with the result of a single crystal X-ray diffraction study, but in variance with results based on a neutron powder diffraction study.
Roles of vascular endothelial growth factor receptor 3 signaling in differentiation of mouse embryonic stem cell–derived vascular progenitor cells into endothelial cells
Authors: Suzuki Hiroyuki , Watabe Tetsuro , Kato Mitsuyasu , Miyazawa Keiji , Miyazono Kohei 
Published: November 2004

AbstractVascular endothelial growth factor receptor 2 (VEGFR2/Flk-1)–positive cells derived from embryonic stem (ES) cells serve as vascular progenitors, which differentiate into endothelial cells (ECs) in the presence of VEGF-A. VEGFR3/Flt-4 (fms-like tyrosine kinase 4) signaling is known to be important for the development of lymphatic endothelial cells (LECs). To elucidate the roles of VEGFR3 signaling in the differentiation of vascular progenitor cells into ECs, we introduced various types of VEGFR3 cDNAs into mouse ES cells. VEGF-C, a ligand for VEGFR2 and VEGFR3, stimulated the endothelial differentiation of the VEGFR2+ cells transfected with the VEGFR3 cDNA but not those transfected with kinasenegative mutants of VEGFR3. The VEGFR3-transfected ECs exhibited high expression levels of lymphatic vessel endothelial hyaluronan receptor-1 (LYVE-1), one of the markers of LECs, and showed efficient binding of hyaluronan. VEGF-C(C152S), which is able to activate VEGFR3 but not VEGFR2, failed to induce the endothelial differentiation of mock- and VEGFR3-transfected VEGFR2+ cells, suggesting the essential role of VEGFR2 signaling for endothelial differentiation. Furthermore, kinase-negative mutants of VEGFR3 prevented the VEGF-C–mediated endothelial differentiation of the vascular progenitor cells. Thus, VEGFR2 signaling is required for the endothelial differentiation of mouse ES cells induced by VEGF-C, and VEGFR3 signaling may confer lymphatic endothelial-like phenotypes to ECs.
Long-range Ordering in Water–Halide Ion Interactions: A Database Study
Authors: Prabakaran Ponraj , Singarayan Maria G 
Published: November 2004

Abstract
A detailed analysis of water–halide ion interactions using the Cambridge Structural Database reveals predominant cyclic hydrogen-bonded (H2O·X−)2 clusters and isostructural tapes of 4,5,6-membered rings leading to channel hydrates.
Multiple Complications and Withdrawal Syndrome Associated with Quetiapine/Venlafaxine Intoxication
Authors: Précourt Andréanne , Dunewicz Magdalena , Grégoire Geneviève , Williamson David R 
Published: November 2004

OBJECTIVE: To report a case of quetiapine/venlafaxine intoxication associated with multiple complications and to review their possible relationship with these 2 drugs. CASE SUMMARY: A 53-year-old white man was admitted to the hospital for loss of consciousness secondary to voluntary intoxication with venlafaxine and quetiapine. Several complications were attributable to this intoxication including seizures, prolonged coma, respiratory depression, neuroleptic malignant syndrome, prolonged QRS and QTc intervals, and a possible venlafaxine withdrawal syndrome. DISCUSSION: Quetiapine could be responsible for the neuroleptic malignant syndrome presented in this case. Moreover, venlafaxine intoxication, fever, autonomic instability, and myoclonus presented serotonin syndrome as a differential diagnosis. Potential causes of seizures and prolongation of the QRS and QTc intervals are reviewed. Finally, prolonged coma and late venlafaxine withdrawal are discussed with regard to the pharmacodynamics and pharmacokinetics of drug elimination in the context of intoxication. CONCLUSIONS: Clinicians should be aware of possible complications following intoxication with atypical antipsychotics and antidepressants, including protracted altered mental status.
Clinical Chemistry through Clinical Chemistry: A Journal Timeline
Authors: Rej Robert 
Published: November 2004

Abstract
The establishment of the modern discipline of clinical chemistry was concurrent with the foundation of the journal Clinical Chemistry and that of the American Association for Clinical Chemistry in the late 1940s and early 1950s. To mark the 50th volume of this Journal, I chronicle and highlight scientific milestones, and those within the discipline, as documented in the pages of Clinical Chemistry. Amazing progress has been made in the field of laboratory diagnostics over these five decades, in many cases paralleling—as well as being bolstered by—the rapid pace in the development of computer technologies. Specific areas of laboratory medicine particularly well represented in Clinical Chemistry include lipids, endocrinology, protein markers, quality of laboratory measurements, molecular diagnostics, and general advances in methodology and instrumentation.
what makes work worth doing?
Authors: FEELEY‐HARNIK GILLIAN 
Published: November 2004

Geisha. LIZA CRICHFIELD DALBYIndependents Declared: The Dilemmas of Independent Trucking. MICHAEL H. AGARFathers Work for Their Sons: Accumulation, Mobility, and Class Formation in an Extended Yorùbá Community. SARA S. BERRYKarl Marx Collective: Economy, Society and Religion in a Siberian Collective Farm. CAROLINE HUMPHREYLe Travail et ses représentations. MICHEL CARTIER
films on farming
Authors: BARLETT PEGGY F. , BATCHELOR TRACY , GUTHRIE ELIZABETH 
Published: November 2004

Farming is Farming. 44 minutes. 1976. RAM films.Merchants of Grain. 57 minutes. 1983. Filmmakers Library.One More Year on the Family Farm? 22 minutes. 1977. CORT.Potatoes. 28 minutes. 1977. Bullfrog Films.The Small Farm in America. 28 minutes. 1978. RAM films.Waterloo Farmers. 28 minutes. 1979. Bullfrog Films.
Village daughter, village goddess: residence, gender, and politics in a Himalayan pilgrimage
Authors: SAX WILLIAM S. 
Published: November 2004

In the Garhwal Himalayas, as elsewhere in South Asia, persons and the places where they reside are thought to have strong mutual effects upo—indeed, to be parts of—each other. What happens, then, after a new bride is obliged to move to her husband's place after marriage? Men and women have different perspectives on this question. Men (and the classical moral treatises of Hinduism) tend to assert complete transformation of the bride, and the standard wedding rite seeks to effect such a transformation. Women, on the other hand, tend to believe that the bride changes only gradually and that her ties to her natal village are never completely severed.Outmarried village daughters are required to participate in numerous rituals in their natal villages; prominent among such rituals are the periodic pilgrimages of the regional goddess, Nandädevi. The requirement that outmarried daughters participate confirms the female perspective, but the pilgrimages themselves ultimately reaffirm virilocality. In this way, both the male and the female perspective are validated without contravening the world view in which both are grounded, and political relations of male domination and female subordination are reproduced through ritual. [ritual, politics, residence, gender, pilgrimage, South Asia]
The Fate of "Culture": Geertz and Beyond; Culture: The Anthropologist's Account
Authors: Stade Ronald 
Published: November 2004

The Fate of "Culture": Geertz and Beyond. Sherry B. Ortner. ed. Berkeley: University of California Press, 1999. vii +169 pp., index.Culture: The Anthropologist's Account. Adam Kuper. Cambridge: Harvard University Press,1999. x+ 299 pp., notes, index.
Blood and Nation: The European Aesthetics of Race; German Bodies: Race and Representation After Hitler
Authors: Lakein Diane 
Published: November 2004

Blood and Nation: The European Aesthetics of Race. Uli Linke. Philadelphia: University of Pennsylvania Press, 1999. vii. 322 pp., photographs, illustrations, notes, bibliography, index.German Bodies: Race and Representation After Hitler. Uli Linke. London: Routledge Press, 1999. vii. 274 pp., illustrations, photographs, notes, bibliography, index.
Knowing adoption and adopting knowledge
Authors: Gershon Ilana 
Published: November 2004

Orphans of Islam: Family, Abandonment, and Secret Adoption in Morocco. Jamila Bargach. Lanham, MD: Rowman and Littlefield, 2002. xvii. 304 pp., bibliography, index.Sealed and Secret Kinship: The Culture of Policies and Practices in American Adoption. Judith Modell New York: Berghahn Books, 2002. vi. 220 pp., bibliography,index.Carnal Knowledge and Imperial Power: Race and the Intimate in Colonial Rule. Ann Laura Stoler. Berkeley: University of California Press, 2002. ix. 335 pp., photographs, notes, bibliography, index.
Irish Farmers and Travellers
Authors: Taylor Lawrence J. 
Published: November 2004

Eugenia Shanklin. Donegal's Changing Traditions. New York: Gordon and Breach, 1985. xviii. 236 pp. $29.00 (cloth).Sharon Gmelch. Nan: The Life of an Irish Travelling Woman. New York: Norton, 1986. 239 pp. $15.95 (cloth).
Tales of the Moral Order
Authors: Berleant‐Schiller Riva 
Published: November 2004

George W. Noblitt and R. Dwight Hare. Meta‐Ethnography: Synthesizing Qualitative Studies. Newbeny Park: Sage Publications, 1988. 88 pp. $6.95 (paper).John Van Maanen. Tales of the Field: On Writing Ethnography. Chicago: University of Chicago Press, 1988. xvi. 173 pp. $7.95 (paper).Robert Wuthnow. Meaning and Moral Order. Berkeley: University of California Press, 1987. xiii. 435 pp. $40.00 (cloth); $12.95 (paper).
Indonesian Images
Authors: Heider Karl G. 
Published: November 2004

Umar Kayam and Hard Peccinotti The Soul of Indonesia:. Cultural Journey. Baton Rouge: Louisiana State University Press, 1985.147 pp.Peter Homan Reimar Schefold. Vincent Dekker. and Nico de Jonge. eds. Indonesia in Focus: Ancient Traditions—Modern Times. New York: Routledge, Chapman, and Hall, 1992.160 pp.
Saving the Good Stuff
Authors: Bresnahan Roger J. 
Published: November 2004

H. Arlo Nimmo The Songs of Salanda and Other Stories of Sulu. Seattle: University of Washington Press, 1994. + 237 pp., map.Jean‐Paul Dumont. Visayan Vignettes: Ethnographic Traces of. Philippine Island. Chicago: University of Chicago Press, 1992. xxii. 226 pp., maps, photos, figures, index.
Healing Failed Faith? Contemporary Siberian Shamanism
Authors: Balzer Marjorie Mandelstam 
Published: November 2004

The agony of public and private changes in Russia (the Federation of Rossiia) has extended to indigenous peoples of Siberia. Focus on the Sakha Republic Yakutia) of the Far East enables analysis of diverse social, political, and spiritual transformations. Initial 1990s euphoria at the possibility of personal and community reform has yielded to confusion and soul searching. In such conditions, shamanic revitalization has become both popular and controversial in rural and urban contexts. Diverse shamanic activities and styles reveal a fragmentation of tradition. While disillusion with failed faith healers is rife, several nascent shamanic movements have attracted eclectic groups of followers. The two shamanic leaders featured here are attempting philosophical, social, and ecological reforms. Their movements and reputations transcend the personal healing of multicultural clients.This article, inspired by the writing and example of Edith Turner, draws attention to the interrelationship between individual and community healing. Data, based on frequent fieldwork in the Far East since 1986, help augment and critique literature on revitalization movements, shamanism, gender, and nationalism.
Zan Boko; Mapantsula
Authors: Owusu Maxwell 
Published: November 2004

Zan Boko. 1988. video by Gasfon Kaboré. 94 minutes, color. Moréand French, with English subtitles. For information contact California Newsreel, 149, 9th Street, San Francisco, CA 94103 (415/621 ‐6196).Mapantsula. 1988. video by Thomas Mogotlane. Max Montocchio. and Oliver Schmitz. 104 minutes, color. Zulu, Sotho, and Afrikaans, with English subtitles. For information contact California Newsreel.
Remodeling Concepts of the Self: An Ijo Example
Authors: Hollos Marida , Leis Philip E. 
Published: November 2004

There has been an ongoing debate in the anthropological and psychological literature as to the appropriate models for conceptualizing self and person in relation to society. The models have different labels, but the opposition expressed between the two focus on the cultural construction of self‐determinacy. The Western model is egocentric in that individuals are situated as free agents, striving to actualize themselves in terms of selfachievement, in afield of extrinsic social institutions, such as the family, and other associations. In the non‐Western, sociocentric model individuals subsume themselves, making the social field intrinsic to themselves. Their actions are predicated by the social contexts in which they are found; achievement motivation and emotional expression are tempered by an expectation that an individual's goals must be subservient to the group at large.In examining our data, collected among the Ijo in southern Nigeria, it appeared that there were elements of both models present in the way individuals defined themselves and their social relationships. We argue that the two models are not necessarily exclusive nor are they conflicting, but may coexist in the selfdefinitions and motivations of individuals within the same society.