scholarly journals MJO as a Gestalt

Abstract Objectively identifying a phenomenon from observation is often difficult. This essay reflects upon this problem from a philosophical perspective by taking the Madden-Julian oscillation (MJO) as an example. I argue that it can be considered as a problem of Gestalt. This concept is introduced by closely following Ludwig Wittgenstein’s two philosophical works, “Philosophical Investigations (Philosophische Untersuchungen)” and “Remarks on the Philosophy of Psychology (Bemerkungen über die Philosophie der Psychologie)”. Reflections upon the concept of Gestalt suggest why an objective identification of a phenomenon is so difficult. Importantly, the problem should not be reduced to that of a “pattern recognition”. Rather a given phenomenon must be considered as a whole, including a question of a driving mechanism.

Between 1946 and 1949 Wittgenstein produced a series of manuscripts, whose contents are published in part as Part II of Philosophical Investigations, and as Remarks on Philosophy of Psychology I and II, and Last Writings I and II. For the most part these read like nightstand diaries (of a sort I ...


2020 ◽  
Vol 11 (1) ◽  
pp. 169-182
Author(s):  
Stefan Majetschak

Abstract“A Misleading Parallel”. Wittgenstein on Conceptual Confusion in Psychology and the Semantics of Psychological Concepts. After the Philosophical Investigations, except for details, were largely finished in 1945, Wittgenstein, in his final years, undertook an intensive study of the grammar of our psychological concepts and the philosophical misinterpretations we often assign to them. Anyone looking through these extensive collections of philosophical remarks will probably quite often find it difficult to understand which questions Wittgenstein was addressing with individual remarks or groups of remarks and where the philosophical problems lay for which he was trying to find a solution, whether therapeutic or otherwise appropriate.In the article at hand I do not claim to fathom the full range of Wittgenstein’s thoughts on the philosophy of psychology even in the most general way. Rather it is my intention to shed some light on a diagnosis which he made for the psychology of his time. In part 1 of this paper I would like to provide a brief sketch of what Wittgenstein considered to be the conceptual confusion prevalent in psychology and to suggest why he did not expect the methods of an experimental (natural) science to be successful in solving the problems that concern us in psychology. In part 2 I’ll attempt to analyze how psychological concepts, according to Wittgenstein, might be construed in order to avoid any type of conceptual confusion.


Author(s):  
Rachael Wiseman

G.E.M. Anscombe (1919–2001) is recognized as one of the most brilliant philosophers of the twentieth century. She is also well known as the translator and editor of Wittgenstein’s later writings, including his Philosophical Investigations. The work Anscombe undertook between 1956 and 1958, during which time she was concerned with the content and foundations of moral philosophy, has been extremely influential in philosophy of action and ethics. Her 1957 monograph, Intention, seeks to give an account of the psychological concepts she thought necessary for moral philosophy to be possible – intention, desire, reason, motive – and is one of the most significant philosophical works on action. Her much anthologized paper ‘Modern Moral Philosophy’ (1958) marks the beginning of the revival of virtue ethics. Anscombe’s work attempts to recover for a contemporary audience the premodern conception of human nature, action and ethics that is found in the writings of Aristotle and St Thomas Aquinas. Anscombe held that the bifurcation of man into mind and body which arose during the seventeenth century – and replaced the Aristotelian dichotomy of form and matter – had disastrous consequences in the philosophy of psychology and ethics. She subjected concepts along the fault line created by this change – cause, substance, mental event, intention, subject, object, freedom, sensation, self-consciousness – to detailed analysis using the method of grammatical enquiry. This method, learnt from Wittgenstein, involves describing the complex use of language in the context of our human form of life. In Anscombe’s work, this analysis reveals that the picture of the human subject that our Cartesian intellectual inheritance makes intuitive is profoundly mistaken.


2018 ◽  
Vol 75 (12) ◽  
pp. 4337-4355 ◽  
Author(s):  
Marat F. Khairoutdinov ◽  
Kerry Emanuel

Abstract Recent studies have suggested that the Madden–Julian oscillation is a result of an instability driven mainly by cloud–radiation feedbacks, similar in character to self-aggregation of convection in nonrotating, cloud-permitting simulations of radiative–convective equilibrium (RCE). Here we bolster that inference by simulating radiative–convective equilibrium states on a rotating sphere with constant sea surface temperature, using the cloud-permitting System for Atmospheric Modeling (SAM) with 20-km grid spacing and extending to walls at 46° latitude in each hemisphere. Mechanism-denial experiments reveal that cloud–radiation interaction is the quintessential driving mechanism of the simulated MJO-like disturbances, but wind-induced surface heat exchange (WISHE) feedbacks are the primary driver of its eastward propagation. WISHE may also explain the faster Kelvin-like modes in the simulations. These conclusions are supported by a linear stability analysis of RCE states on an equatorial beta plane.


2018 ◽  
Vol 9 (1) ◽  
pp. 155-201
Author(s):  
Josef G. F. Rothhaupt

Abstract:In 1953 — two years after Wittgenstein’s death — the Philosophical Investigations as we know them today have been published in a bilingual (German-English) edition by Elizabeth Anscombe and Rush Rhees. This publication is divided into two parts – entitled “Part I” and “Part II”. In the revised 4th edition by Peter Hacker and Joachim Schulte from 2009 the title “Part II” was deleted and renamed to “Remarks on the Philosophy of Psychology — A Fragment”. This article presents some new research results about the genesis of the Philosophical Investigations in general and about “Part II” / “A Fragment” in particular. Furthermore, the so-called “C-Collection” arranged by Wittgenstein himself will be introduced in detail.


Author(s):  
G.Y. Fan ◽  
J.M. Cowley

In recent developments, the ASU HB5 has been modified so that the timing, positioning, and scanning of the finely focused electron probe can be entirely controlled by a host computer. This made the asynchronized handshake possible between the HB5 STEM and the image processing system which consists of host computer (PDP 11/34), DeAnza image processor (IP 5000) which is interfaced with a low-light level TV camera, array processor (AP 400) and various peripheral devices. This greatly facilitates the pattern recognition technique initiated by Monosmith and Cowley. Software called NANHB5 is under development which, instead of employing a set of photo-diodes to detect strong spots on a TV screen, uses various software techniques including on-line fast Fourier transform (FFT) to recognize patterns of greater complexity, taking advantage of the sophistication of our image processing system and the flexibility of computer software.


Author(s):  
L. Fei ◽  
P. Fraundorf

Interface structure is of major interest in microscopy. With high resolution transmission electron microscopes (TEMs) and scanning probe microscopes, it is possible to reveal structure of interfaces in unit cells, in some cases with atomic resolution. A. Ourmazd et al. proposed quantifying such observations by using vector pattern recognition to map chemical composition changes across the interface in TEM images with unit cell resolution. The sensitivity of the mapping process, however, is limited by the repeatability of unit cell images of perfect crystal, and hence by the amount of delocalized noise, e.g. due to ion milling or beam radiation damage. Bayesian removal of noise, based on statistical inference, can be used to reduce the amount of non-periodic noise in images after acquisition. The basic principle of Bayesian phase-model background subtraction, according to our previous study, is that the optimum (rms error minimizing strategy) Fourier phases of the noise can be obtained provided the amplitudes of the noise is given, while the noise amplitude can often be estimated from the image itself.


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