We apply an online optimization process based on machine learning to the production of Bose-Einstein condensates. BEC is typically created with an exponential evaporation ramp that is optimal for ergodic dynamics with two-body s-wave interactions and no other loss rates, but likely sub-optimal for real experiments. Through repeated machine-controlled scientific experimentation and observations our ’learner’ discovers an optimal evaporation ramp for BEC production. In contrast to previous work, our learner uses a Gaussian process to develop a statistical model of the (...) relationship between the parameters it controls and the quality of the BEC produced. We demonstrate that the Gaussian process machine learner is able to discover a ramp that produces high quality BECs in 10 times fewer iterations than a previously used online optimization technique. Furthermore, we show the internal model developed can be used to determine which parameters are essential in BEC creation and which are unimportant, providing insight into the optimization process of the system. (shrink)

This paper examines the impact of ruralurban migrant and non-migrant groups. The selectivity of ruralurban migrants and rural non-migrants. Problems faced by migrants in assimilating into urban societies create mortality differentials between ruralchild mortality. Further research is needed to understand the health care needs of rural–urban migrants in order to inform the provision of appropriate health care.

In our paper we will try to connect the dynamics of community decline to individual responses. We will operate on two levels of reality. At the first level we will discuss the circumstances surrounding the recent decline of small communities in North Dakota. At the second level we will discuss how this decline affects small town residents' attitudes toward economic development. In the first level analysis we examine the thesis that the natural environment of community growth is economic exploitation; therefore, (...) the decline of resource-based communities is natural and inevitable. We discuss the circumstances surrounding the recent decline of small communities in North Dakota. At the second level analysis, we operate at the level at which life circumstances and environments are shaped by political-economic institutions that in turn shape the behavior and mentality of communities, families, and individuals. We hypothesize that residents of declining small towns deny their powerlessness and adapt to their situation through intense dedication to economic growth. We develop a series of hypotheses to test this thesis using data from the North Dakota Rural Life Poll. In our conclusion, we discuss implications for rural development practitioners working in declining small towns where this intense dedication to economic development in prevalent. (shrink)

BACKGROUND: Hallucinations and delusions that complicate Parkinson’s disease could lead to nursing home placement and are linked to increased mortality. Cognitive impairments are typically associated with the presence of hallucinations but there are no data regarding whether such a relationship exists with delusions. OBJECTIVE: We hypothesized that hallucinations would be associated with executive and visuospatial disturbance. An exploratory examination of cognitive correlates of delusions was also completed to address the question of whether they differ from hallucinations. METHODS: 144 PD subjects (...) completed a neuropsychological battery to assess cognition and the SAPS to examine psychosis. Correlational analyses assessed associations between hallucinations and delusions with cognitive domains. RESULTS: 48 subjects reported psychotic symptoms: 25 experienced hallucinations without delusions, 23 had symptoms dominated by delusions. Severity and/or number of hallucination subtypes were significantly correlated with lower scores in language, memory, attention, executive functioning, and visuospatial ability. Correlations with delusions were non-significant. Tests of differences in the size of the correlations between groups revealed a significant relationship between language and visuospatial performance with hallucinations. CONCLUSIONS: Cognitive correlates of hallucinations and delusions appear to be different in PD, suggesting distinct pathogenic mechanisms and possibly anatomical substrates. Hence, delusions may not share the same associations with dementia as hallucinations. Since this is a new finding, further studies will be needed to confirm our results. (shrink)

Abortion is one of the most divisive topics in healthcare. Proponents and opponents hold strong views. Some health workers who oppose abortion assert a right of conscientious objection to it, a position itself that others find unethical. Even if allowance for objection should be made, it is not clear how far it should extend. Can conscientious objection be given as a reason not to refer when a woman requests her doctor to do so? This paper explores the idea of the (...) general practitioner (GP) who declines to make a direct referral for abortion, asking the woman to see another GP instead. The purpose is to defend the claim that an appeal to conscientious objection in this way can be reasonable and ethical. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:BOOK REVIEWS 477 (p. 32), although some might consider him to have been an important historian of logic. I am not certain that citing Carnap and Heideggar (p. 75) can do much to clarify Vires. When one reads 'Henrique Estienne' and "Hipotiposes pirronicas" (p. 266) in an Italian book he is a bit taken aback and wonders whether the author has done his homework. The writer missed a golden (...) opportunity to connect Galileo to the tradition, for his still unpublished Quaestiones on logic and the De motu (both written before 1600) have many interesting comments which tie in directly with the material developed in this volume. This could have provided an excellent bridge to the next'century, when the analytic method began to take a more central role in scientific and methodological discussions. There is still room for a number of studies on the evolution of the analytic method during the Renaissance. Unfortunately Crescini's study barely scratches the surface of this immense subject. Let us hope that his book will at least have the effect of encouraging others to treat the matter with more care, in greater depth, and more exhaustively. The volume is provided with a preface by Giorgio Radetti, who claims more for it than it actually provides, as well as noting that it is the first part of a more comprehensive study by the same author on the formation of the analytic method in Cartesian philosophy (p. 5). The book has a useful index, but unfortunately no bibliography. CHARLESB. ScxiMrrr The University of Leeds Le thomisme et la pens#e italienne de la Renaissance. By Paul Oskar Kristeller. Conference Albert-le-Grand 1965. (Montr6ah Institut d'~tudes m~di~vales, and Paris: Vrin, 1967. Pp. 287. $6) Surprisingly little is known about the later history of Thomism. This brief but very rich lecture by Professor Kristeller, renowned historian of Italian Renaissance philosophy, examines one period in the later career of St. Thomas' thought. This study, based chiefly on unpublished source material, shows that Thomas was very much present to both the humanists and to the academic philosophers during the Renaissance. Such leading humanists as Lorenzo Valla, Giovanni Pico della Mirandola, and Marsilio Ficino, quote St. Thomas frequently and with approval. Even the unfavorable attitudes of Ermolao Barbaro or Baptista Mantuanus show that Thomas was already the most celebrated of mediaeval philosophers. The professors of philosophy at Italian universities, such as Pierre Pomponazzi, speak of Thomas with great respect and regard his theology as in conformity with the truths of faith, even when they reject his philosophy as being in disaccord with the authentic teaching of Aristotle. St. Thomas made a continuous contribution to the development of Renaissance theology and philosophy. Yet the principal Italian thinkers did not follow him strictly nor fall under his exclusive influence. Thomas is merely one of the most important sources, not the prevailing influence, in Renaissance thought. Ficino, for example, is,178 HISTORY OF PHILOSOPHY in accord with Thomas on certain important points, but his own theology is more in the spirit of Plato and Augustine. Professor Kristeller's vast learning is at the service of admirably balanced conclusions. Not everyone will agree with all his interpretations; Ficino perhaps did not imagine himself to be "constructing a system of philosophy" (p. 96) since the very title of his work, Theologia platonica, suggests that he continues, with new materials, the labor of mediaeval theolo#ans. And Ficino's doctrine of the continuity of the supernatural life of the soul in this world and the next (p. 120) seems to be completely in accord with Thomas. But the author's very careful scholarly method and sound general conclusions are beyond criticism. Two hitherto unpublished Latin texts are printed in critical edition at the end of the French lecture, the Opus aureum in Thomistas by Baptists Mantuanus, which is anti-Thomas, and the Opusculum ad Laurentium Medicem on beatitude, by Vincentius Bandellus, which is pro-Thomas. Like Professor Kristeller's fine lecture, these new texts are a permanent contribution to scholarship. PAUL J. W. MILLER University of Colorado The Anatomy of Leviathan. By F. S. McNeilly. (New York: St. Martin's Press, 1968. Pp... (shrink)

One of the most serious pre-occupations of post-medieval philosophy has been to distinguish those kinds of assertion which are either true or false from those which are neither true nor false. A solution to this problem would be of the highest importance. It would indicate in what areas rational inquiry has some hope of success and in what areas it is doomed to frustration. It would tell us, for example, whether it is worth trying to think about the possible mistakenness (...) of our moral principles, or whether such thinking is bound to be ineffective since no truth or falsity attaches to them. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:BOOK REVIEWS 477 (p. 32), although some might consider him to have been an important historian of logic. I am not certain that citing Carnap and Heideggar (p. 75) can do much to clarify Vires. When one reads 'Henrique Estienne' and "Hipotiposes pirronicas" (p. 266) in an Italian book he is a bit taken aback and wonders whether the author has done his homework. The writer missed a golden (...) opportunity to connect Galileo to the tradition, for his still unpublished Quaestiones on logic and the De motu (both written before 1600) have many interesting comments which tie in directly with the material developed in this volume. This could have provided an excellent bridge to the next'century, when the analytic method began to take a more central role in scientific and methodological discussions. There is still room for a number of studies on the evolution of the analytic method during the Renaissance. Unfortunately Crescini's study barely scratches the surface of this immense subject. Let us hope that his book will at least have the effect of encouraging others to treat the matter with more care, in greater depth, and more exhaustively. The volume is provided with a preface by Giorgio Radetti, who claims more for it than it actually provides, as well as noting that it is the first part of a more comprehensive study by the same author on the formation of the analytic method in Cartesian philosophy (p. 5). The book has a useful index, but unfortunately no bibliography. CHARLESB. ScxiMrrr The University of Leeds Le thomisme et la pens#e italienne de la Renaissance. By Paul Oskar Kristeller. Conference Albert-le-Grand 1965. (Montr6ah Institut d'~tudes m~di~vales, and Paris: Vrin, 1967. Pp. 287. $6) Surprisingly little is known about the later history of Thomism. This brief but very rich lecture by Professor Kristeller, renowned historian of Italian Renaissance philosophy, examines one period in the later career of St. Thomas' thought. This study, based chiefly on unpublished source material, shows that Thomas was very much present to both the humanists and to the academic philosophers during the Renaissance. Such leading humanists as Lorenzo Valla, Giovanni Pico della Mirandola, and Marsilio Ficino, quote St. Thomas frequently and with approval. Even the unfavorable attitudes of Ermolao Barbaro or Baptista Mantuanus show that Thomas was already the most celebrated of mediaeval philosophers. The professors of philosophy at Italian universities, such as Pierre Pomponazzi, speak of Thomas with great respect and regard his theology as in conformity with the truths of faith, even when they reject his philosophy as being in disaccord with the authentic teaching of Aristotle. St. Thomas made a continuous contribution to the development of Renaissance theology and philosophy. Yet the principal Italian thinkers did not follow him strictly nor fall under his exclusive influence. Thomas is merely one of the most important sources, not the prevailing influence, in Renaissance thought. Ficino, for example, is,178 HISTORY OF PHILOSOPHY in accord with Thomas on certain important points, but his own theology is more in the spirit of Plato and Augustine. Professor Kristeller's vast learning is at the service of admirably balanced conclusions. Not everyone will agree with all his interpretations; Ficino perhaps did not imagine himself to be "constructing a system of philosophy" (p. 96) since the very title of his work, Theologia platonica, suggests that he continues, with new materials, the labor of mediaeval theolo#ans. And Ficino's doctrine of the continuity of the supernatural life of the soul in this world and the next (p. 120) seems to be completely in accord with Thomas. But the author's very careful scholarly method and sound general conclusions are beyond criticism. Two hitherto unpublished Latin texts are printed in critical edition at the end of the French lecture, the Opus aureum in Thomistas by Baptists Mantuanus, which is anti-Thomas, and the Opusculum ad Laurentium Medicem on beatitude, by Vincentius Bandellus, which is pro-Thomas. Like Professor Kristeller's fine lecture, these new texts are a permanent contribution to scholarship. PAUL J. W. MILLER University of Colorado The Anatomy of Leviathan. By F. S. McNeilly. (New York: St. Martin's Press, 1968. Pp... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:A Tale of Three Zoras:Barbara Johnson and Black Women WritersHortense J. Spillers (bio)Talking about Zora Neale Hurston is like approaching the Sphinx—so much riddle, so many faces, and all of it occurring on fairly high holy ground since Alice Walker's remarkable discovery a couple of decades ago.1 But Barbara Johnson's criticism cracks the code on Her Majesty and brings the sign vehicle—"Zora Neale Hurston"—to the table of juxtapositions and (...) comparisons. There is the iconic Hurston, whose positioning between the Harlem Renaissance2 and the post-World War II writers gives her a priority of status that marks the woman artist's entry into literary modernism. The latter, in its variety of contexts and alignments, opened the way to certain experimental forms for these writers and might not have been completed as a systematic gesture before the late sixties and early seventies, when this generation of practitioners was free to create antiheroic figures and to probe the limits of representability. In short, with Zora Neale Hurston a window is pried open, a breeze blows through, and by the time of Toni Morrison's Beloved, an opening has become a prospect, a landscape of vistas of possibility. We can think of Hurston, then, as an enabler, who was not particularly encouraged by the literary politics of her age, from first to last; whether by the "maledom" of Harlem Renaissance avenues to reward and achievement, or by the paradigm shift of race politics in the 1950s,3 Hurston seems to have been equipped with the uncanny ability to create a kind of chaos, to behave outside the parameters of fashion, and to create dimensions of the mythical about her as she modeled versions of self.In her role as classically trained anthropologist and folklorist, Hurston is considered today one of the major theoreticians of black culture.4 Her collections of lore, a [End Page 94] motherlode of a southern-centered orality,5 of the countryside, are fruitfully poised against the displaced metaphysical traditions of discourse that we especially associate with figures like Alain Locke and W. E. B. DuBois.6 As it now appears, the oppositional currents that run between the Hurstonian and the DuBoisian figurations have yet to be reconciled: the latter is text-based, and the former exceeds the abiding centrality of the word. Barbara Johnson argues in A World of Difference that Hurston "tried to explain the difference between a reified 'art' and a living culture in which distinctions between spectator and spectacle, rehearsal and performance, experience and representation are not fixed" [159]. For Hurston, folklore was "'the arts of the people before they find out that there is such a thing as art.'" For Hurston, unlike DuBois, for example, black culture was not a project in the modality of Bildung, or the Hegelian notion, but, rather, a repertoire of gestures that might be said to belong to a second skin—the kinetic thing that is done or said.From our current perspective, what Hurston called "folklore" and what offered the occasion for the ethnographic foray might be given other names, though renaming these acts and gestures of the everyday does not make it any easier to reconcile the conceptual split in black culture theory between textuality and orality, or between "urban" and "countryside." But all of these locutions have been essentially eviscerated by radical changes in the availability and transmission of consumer goods that have rendered US local and indigenous cultures virtually indistinguishable from Jackson, Mississippi to Boston, Massachusetts. Take any interstate network across the land, east to west, or north to south: between McDonald's and the food/gas mart, scattered along ten- to twenty-mile sequences of roadway, one is quite astonished at the sameness and homogeneity of motifs that have translated particularity into an item of commerce and exchange. At one time, the critics were calling this outcome the postmodern flow, but my own hunch is that this apparent repetition and replication of the same are riddled with a variety of timbres and accents, still, that the Hurston ear was so sharp to articulate and define six decades ago. And in that intricate choreography between the life... (shrink)