Dinge im Kollektiv

Author(s):  
Marc Rölli

Husserls Analyse der Wahrnehmung und Heideggers Zeittheorie sind beide in ihrem Theorieaufbau auf die Gegenständlichkeit der Gegenstände – oder auf den Gegenstandsbezug der Erfahrung und seine wesensmäßige Konstitution – fixiert. Hierin spiegelt sich, bei Heidegger explizit, Kantisches Erbe. Diese phänomenologische, transzendentalphilosophische Relevanz des Gegenstands verweist im Kern auf Intentionalität – und damit auf eine objektbezogene Selbstüberschreitungsfigur der Subjektivität. Ganz anders bestimmt Latour den Stellenwert der Dinge im Kollektiv, wenn er ihnen eine Handlungsmacht zuschreibt, die den traditionellen Gegensatz zwischen Handlungssubjekten und Objektbehandlung einklammert. Der folgende Beitrag kreist den kritischen Punkt ein, der in der Theoriebildung zur Verzweigung phänomenologischer und ANTistischer Ansätze führt. Während sich die Phänomenologie im Zuge einer begrifflichen Rekonstruktion der Erfahrung von Gegenständen konsolidiert, ist die ANT auf die Beschreibung von Handlungsstrukturen ausgerichtet, die sich aus Aktanten aller Art zusammensetzen. Abschließend stellt sich die Frage, ob nicht die kollektivistische Soziologie Latours von dem methodischen Solipsismus der Phänomenologie lernen kann, dass es eine konstruktive Dimension und Machtfülle der deskriptiven Arbeit gibt, die nicht einfach den Akteuren überhaupt, sondern vor allem der Analytikerin überlassen ist? </br></br>Husserl's analysis of perception and Heidegger's theory of time are both fixated on the objectivity of objects - or the objectrelation of experience and its essential constitution. This reflects - and in the case of Heidegger quite explicitly - Kantian heritage. This phenomenological, transcendental relevance of the object essentially refers to intentionality - and thus an object-related figure of self-transcending subjectivity. Quite differently, Latour determines the status of things in the collective, ascribing to them an agency that brackets the traditional opposition between acting subjects and passive objects. The contribution encircles precisely that critical point which leads to the separation of phenomenological and ANTistical approaches. While phenomenology grounds itself by reconstructing the experience of objects, ANT focuses on the description of the structures of action, which are composed of actants of all kinds. Finally, the question arises whether Latour's collectivist sociology can learn from phenomenology's methodological solipsism that there is a constructive dimension and plenitude of power in the work of description that is not just left to actors in general, but above all to the analyst herself?

2018 ◽  
Vol 191 ◽  
pp. 05002 ◽  
Author(s):  
Evgeny Andronov

NA61/SHINE is a fixed target experiment operating at the CERN SPS. Its main goals are to search for the critical point of strongly interacting matter and to study the onset of deconfinement. For these goals a scan of the two dimensional phase diagram (T-μB) is being performed at the SPS by measurements of hadron production in proton-proton, proton-nucleus and nucleusnucleus interactions as a function of collision energy. In this paper the status of the NA61/SHINE strong interaction physics programme is presented including recent results on proton intermittency, strongly intensive fluctuation observables of multiplicity and transverse momentum fluctuations. These measurements are expected to be sensitive to the correlation length in the produced matter and, therefore, have the ability to reveal the existence of the critical point via possible non-monotonic behavior. The NA61/SHINE results are compared to the model predictions.


Open Physics ◽  
2012 ◽  
Vol 10 (6) ◽  
Author(s):  
Katarzyna Grebieszkow

AbstractThe NA61/SHINE at the CERN SPS is a new experiment to study hadron production in p+p, p+A, h+A and A+A interactions. The main goal of the NA61 ion program is to explore the phase diagram (T − µB) of strongly interacting matter. In particular, we plan to study the properties of the onset of deconfinement and to search for the signatures of the critical point. A two-dimensional scan of the phase diagram will be performed by varying the energy (13A–158A GeV) and system size (p+p, Be+Be, Ar+Ca, Xe+La) of collisions. This paper summarizes the status and plans of the NA61/SHINE ion program. In particular the detector upgrades, data taking schedule and the first results on spectra and correlations are discussed.


2000 ◽  
Vol 1 (2) ◽  
pp. 111-134
Author(s):  

AbstractThe primary purpose of this article is to examine the current situation of North Korean escapees in China and Russia and to search for international legal measures protecting their human rights. Since the mid-1990s, many North Koreans have escaped from either their country or from working places in another country, not to return to North Korea for political and economic reasons. Their defections have been accelerated by the severe food crisis plaguing North Korea. As the number of the escapees has grown, their status has become a critical point of contention among the States concerned. It finally became a major issue with the forcible repatriation of seven North Korean escapees in January 2000. In order to protect the human rights of these seven, and to establish a workable precedent for other defectors, international legal measures should be considered as soon as possible. This question will be examined here in light of the principles of the 1951 Convention relating to the Status of Refugees and other relevant legal measures. Crucial points in answer to this question thus may be found within the provisions of the 1951 Convention. Diplomatic considerations should be also taken on these legal grounds. For a final resolution, the international cooperation of governments and NGOs is urgently required.


2018 ◽  
Vol 175 ◽  
pp. 07032 ◽  
Author(s):  
Francesca Cuteri ◽  
Christopher Czaban ◽  
Owe Philipsen ◽  
Alessandro Sciarra

We report on the status of ongoing investigations aiming at locating the deconfinement critical point with standard Wilson fermions and Nf = 2 flavors towards the continuum limit (standard Columbia plot); locating the tricritical masses at imaginary chemical potential with unimproved staggered fermions at Nf = 2 (extended Columbia plot); identifying the order of the chiral phase transition at μ = 0 for Nf = 2 via extrapolation from non integer Nf (alternative Columbia plot).


Author(s):  
Charles TurnbiLL ◽  
Delbert E. Philpott

The advent of the scanning electron microscope (SCEM) has renewed interest in preparing specimens by avoiding the forces of surface tension. The present method of freeze drying by Boyde and Barger (1969) and Small and Marszalek (1969) does prevent surface tension but ice crystal formation and time required for pumping out the specimen to dryness has discouraged us. We believe an attractive alternative to freeze drying is the critical point method originated by Anderson (1951; for electron microscopy. He avoided surface tension effects during drying by first exchanging the specimen water with alcohol, amy L acetate and then with carbon dioxide. He then selected a specific temperature (36.5°C) and pressure (72 Atm.) at which carbon dioxide would pass from the liquid to the gaseous phase without the effect of surface tension This combination of temperature and, pressure is known as the "critical point" of the Liquid.


Author(s):  
B. K. Kirchoff ◽  
L.F. Allard ◽  
W.C. Bigelow

In attempting to use the SEM to investigate the transition from the vegetative to the floral state in oat (Avena sativa L.) it was discovered that the procedures of fixation and critical point drying (CPD), and fresh tissue examination of the specimens gave unsatisfactory results. In most cases, by using these techniques, cells of the tissue were collapsed or otherwise visibly distorted. Figure 1 shows the results of fixation with 4.5% formaldehyde-gluteraldehyde followed by CPD. Almost all cellular detail has been obscured by the resulting shrinkage distortions. The larger cracks seen on the left of the picture may be due to dissection damage, rather than CPD. The results of observation of fresh tissue are seen in Fig. 2. Although there is a substantial improvement over CPD, some cell collapse still occurs.Due to these difficulties, it was decided to experiment with cold stage techniques. The specimens to be observed were dissected out and attached to the sample stub using a carbon based conductive paint in acetone.


Author(s):  
L.J. Chen ◽  
Y.F. Hsieh

One measure of the maturity of a device technology is the ease and reliability of applying contact metallurgy. Compared to metal contact of silicon, the status of GaAs metallization is still at its primitive stage. With the advent of GaAs MESFET and integrated circuits, very stringent requirements were placed on their metal contacts. During the past few years, extensive researches have been conducted in the area of Au-Ge-Ni in order to lower contact resistances and improve uniformity. In this paper, we report the results of TEM study of interfacial reactions between Ni and GaAs as part of the attempt to understand the role of nickel in Au-Ge-Ni contact of GaAs.N-type, Si-doped, (001) oriented GaAs wafers, 15 mil in thickness, were grown by gradient-freeze method. Nickel thin films, 300Å in thickness, were e-gun deposited on GaAs wafers. The samples were then annealed in dry N2 in a 3-zone diffusion furnace at temperatures 200°C - 600°C for 5-180 minutes. Thin foils for TEM examinations were prepared by chemical polishing from the GaA.s side. TEM investigations were performed with JE0L- 100B and JE0L-200CX electron microscopes.


Author(s):  
T. G. Naymik

Three techniques were incorporated for drying clay-rich specimens: air-drying, freeze-drying and critical point drying. In air-drying, the specimens were set out for several days to dry or were placed in an oven (80°F) for several hours. The freeze-dried specimens were frozen by immersion in liquid nitrogen or in isopentane at near liquid nitrogen temperature and then were immediately placed in the freeze-dry vacuum chamber. The critical point specimens were molded in agar immediately after sampling. When the agar had set up the dehydration series, water-alcohol-amyl acetate-CO2 was carried out. The objectives were to compare the fabric plasmas (clays and precipitates), fabricskeletons (quartz grains) and the relationship between them for each drying technique. The three drying methods are not only applicable to the study of treated soils, but can be incorporated into all SEM clay soil studies.


Author(s):  
Linda M. Sicko ◽  
Thomas E. Jensen

The use of critical point drying is rapidly becoming a popular method of preparing biological samples for scanning electron microscopy. The procedure is rapid, and produces consistent results with a variety of samples. The preservation of surface details is much greater than that of air drying, and the procedure is less complicated than that of freeze drying. This paper will present results comparing conventional air-drying of plant specimens to critical point drying, both of fixed and unfixed material. The preservation of delicate structures which are easily damaged in processing and the use of filter paper as a vehicle for drying will be discussed.


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