Daesuk Han 《逻辑史和逻辑哲学》2013,34(3):219-245

When it comes to Wittgenstein's philosophy of mathematics, even sympathetic admirers are cowed into submission by the many criticisms of influential authors in that field. They say something to the effect that Wittgenstein does not know enough about or have enough respect for mathematics, to take him as a serious philosopher of mathematics. They claim to catch Wittgenstein pooh-poohing the modern set-theoretic extensional conception of a real number. This article, however, will show that Wittgenstein's criticism is well grounded. A real number, as an ‘extension’, is a homeless fiction; ‘homeless’ in that it neither is supported by anything nor supports anything. The picture of a real number as an ‘extension’ is not supported by actual practice in calculus; calculus has nothing to do with ‘extensions’. The extensional, set-theoretic conception of a real number does not give a foundation for real analysis, either. The so-called complete theory of real numbers, which is essentially an extensional approach, does not define (in any sense of the word) the set of real numbers so as to justify their completeness, despite the common belief to the contrary. The only correct foundation of real analysis consists in its being ‘existential axiomatics’. And in real analysis, as existential axiomatics, a point on the real line need not be an ‘extension’.  相似文献   

    

Gangseog Ryu  Jin K. Han 《Journal of Consumer Psychology》2009,19(3):403-415

Scholars in social psychology and marketing have traditionally examined word-of-mouth (WOM) interactions in a dyadic setting, comprised of a WOM-opinion provider and its recipient. Yet, social interactions also often occur in larger settings, and group-based research has shown group sizes to affect its member behavior. To this end, we set out to examine WOM transmission in a larger context by introducing a WOM responder, whose role is to provide a second opinion to the WOM recipient. In Experiment 1, we find that social relations in the triad play a key role in WOM transmission. For strong ties, the WOM responder showed little difference in willingness to offer a second opinion irrespective of its congruency with the first opinion. Incongruency with the first opinion, however, reduced the valence of the second opinion. For weak ties, the presence (vs. absence) of first opinion—irrespective of its congruency—increased the likelihood of offering a second opinion and also its valence. We demonstrate that the effects could be attributable to different accessibility of needs for assimilation and differentiation as well as of motivational orientations toward other parties of WOM. Experiment 2 takes a closer look at the conflicting motivations of social influence (normative vs. informational) associated with strong ties, and finds both in operation but to a differing degree. Finally, a follow-up study addresses the current findings in the context of satisfied/dissatisfied consumers.  相似文献   

    

Quinlan PT  van der Maas HL  Jansen BR  Booij O  Rendell M 《Cognition》2007,103(3):413-459

The present paper re-appraises connectionist attempts to explain how human cognitive development appears to progress through a series of sequential stages. Models of performance on the Piagetian balance scale task are the focus of attention. Limitations of these models are discussed and replications and extensions to the work are provided via the Cascade-Correlation algorithm. An application of multi-group latent class analysis for examining performance of the networks is described and these results reveal fundamental functional characteristics of the networks. Evidence is provided that strongly suggests that the networks are unable to acquire a mastery of torque and, although they do recover certain rules of operation that humans do, they also show a propensity to acquire rules never previously seen.  相似文献   

    

Laura Aguilera  Han Z. Li 《Asian Journal of Social Psychology》2009,12(3):163-172

This study examined whether a short training in grounding strategies could improve intercultural communication. Forty intercultural dyads (Anglo-Canadians and Mainland Chinese) were randomly assigned to experimental and control groups. Prior to their conversations the experimental groups received 10–15 min training on grounding while the control groups received no training. The trained dyads performed significantly better than the untrained dyads in grounding, speaker presentation and listener recall, thus documenting that the 10–15 min training on grounding was fruitful in improving intercultural communication. Grounding training may open a new avenue for reducing intercultural miscommunication, thus improving information transmission.  相似文献   

    

Y. Qiao  A. Han 《Philosophical Magazine Letters》2013,93(1):25-31

As the ion density at a solid–liquid interface changes, the interfacial tension varies accordingly, which can lead to a large energy density output, particularly when amplified by the high specific surface area of a nanoporous material. This concept is validated by the results of a controlled-temperature infiltration experiment on a hydrophobic zeolite immersed in a saturated aqueous solution of sodium acetate. As the temperature changes, the sodium acetate concentration varies significantly, which in turn causes a variation in infiltration pressure. Since the infiltration and defiltration are reversible, under the working pressure, this system exhibits a volume memory characteristic, with a non-monotonic temperature–volume relationship.  相似文献   

    

Y.-Z. Liu  X. D. Han  Z. Zhang 《Philosophical Magazine Letters》2013,93(2):103-111

Off-axis electron holography has been used to map the electric potential derived from the spontaneous polarity in a ZnO film. A wedge-shaped ZnO film, in which the holograms and the object wave were reconstructed, was used. To interpret the phase image correctly, the reconstructed amplitude image was used to obtain information on the thickness, which was then applied to eliminate the thickness effect on the phase shift. The electric potential distribution was characterized and the polarity of the ZnO film determined.  相似文献   

    

Y. Z. Liu  H. T. Yuan  Z. Q. Zeng  X. L. Du  X. D. Han  Q. K. Xue 《Philosophical Magazine Letters》2013,93(9):687-693

Transmission electron microscopy has been used to investigate the (1100) and (1103) inversion domain boundaries in a ZnO film prepared by molecular beam epitaxy. The inversion domain was revealed by dark-field images and confirmed by convergent-beam electron diffraction. Interacting with a (0002) stacking fault, the inversion domain boundary in the (1100) plane alters its orientation from the [0001] direction and climbs on the (1103) plane to release the strain energy. These features are characterized and analysed by high-resolution electron microscopy and the geometric phase method. The findings are significant for understanding the formation and propagation of inverse domain boundaries in epitaxial ZnO films.  相似文献   

    

David L. Eng Ph.D.  Shinhee Han C.S.W. 《Psychoanalytic Dialogues》2013,23(4):667-700

As Freud's privileged theory of unresolved grief, melancholia presents a compelling framework to conceptualize registers of loss and depression attendant to both psychic and material processes of Asian American immigration, assimilation, and racialization. Freud initially formulates melancholia as a pathological form of individual mourning for lost objects, places, or ideals. However, we propose a concept of melancholia as a depathologized structure of everyday group experience for Asian Americans. We analyze a number of Asian American cultural productions (literature and film) as well as two case histories of university students involving intergenerational conflicts and lost ideals of whiteness, Asianness, home, and language. Exploring these analyses against Klein's notions of lost objects, we propose a more refined theory of good and bad racialized objects. This theory raises the psychic and political difficulties of reinstatement and the mediation of the depressive position for Asian Americans. In addition, this theory suggests that processes of immigration, assimilation, and racialization are neither pathological nor permanent but involve the fluid negotiation between mourning and melancholia. Throughout this essay, we consider methods by which a more speculative approach to psychoanalytic theory and clinical practice might offer a deeper understanding of Asian American mental health issues.  相似文献   

    

Seunghee Han  Jennifer S. Lerner  Dacher Keltner 《Journal of Consumer Psychology》2007,17(3):158-168

This article presents the Appraisal‐Tendency Framework (ATF; Lerner & Keltner, 2000, 2001; Lerner & Tiedens, 2006) as a basis for predicting the influence of specific emotions on consumer decision making. In particular, the ATF addresses how and why specific emotions carry over from past situations to color future judgments and choices. After reviewing the main assumptions and the 5 main principles of the framework, 2 streams of research are presented. One stream addresses emotional carryover effects on the assessment of risk; the other addresses carryover effects on the assessment of monetary value. Because risk assessment and value assessment are fundamental psychological processes, understanding them has the potential to yield manifold implications for consumer judgment and decision making. The concluding sections highlight limitations and future directions of the framework.  相似文献   

    

Yu‐Wen Ying  Meekyung Han 《International Journal of Applied Psychoanalytic Studies》2007,4(4):333-348

Informed by a psychoanalytic theory, the current study aimed to examine variation in the acculturation of Asian American refugees and immigrants, their children's endorsement of familism, and its mental health consequences. Specifically, we hypothesized that refugees would acculturate less than immigrants, which, in turn, would partially mediate a higher endorsement of familism in the former's children. Furthermore, we hypothesized that familism would negatively impact the mental health of children of refugees but not that of children of immigrants. The study used data from the Children of Immigrants Longitudinal Study (CILS). A group of 491 Asian American refugee and 391 immigrant parents and their adolescent children served as the sample. As predicted, refugees were less acculturated than immigrants, which partially mediated the effect of migration type on their children's level of familism. Also, as predicted, familism negatively impacted the mental health of children of refugees but not that of children of immigrants. Implications for mental health services targeting this population are discussed. Copyright © 2006 John Wiley & Sons, Ltd.  相似文献