Reading Electronic News: Why Fine-Grained Filtering is Tough

Author(s):  
Michael Shepherd ◽  
Carolyn Watters

The amount of news now available electronically makes it imperative that sophisticated filtering tools be developed. The creation of personalized electronic newspapers based on fine-grained filtering is difficult to achieve and attempts have met with poor results. These results may be explained by the ludenic or play theory of news reading which proposes that the process of reading the newspaper. . .

2008 ◽  
Vol 2 (2) ◽  
pp. 30-51
Author(s):  
Hubert Kowalewski

In this article I will investigate the process of conceptual blending involved in sign formation. The main objective of this article is to demonstrate that conceptual blending theory is capable of accounting for the creation of both linguistic and non-linguistic signs from pre-existing semiotic inventory. Moreover, like in the case of logos and names of certain products, the conceptual mechanism behind the formation of linguistic and non-linguistic signs is similar not only in general aspects, but also in fine-grained details. This statement is by no means paradoxical. The theory of conceptual blending strives to describe the basic conceptual mechanism responsible for the semiotic capabilities of the human mind and is not intrinsically connected with any specific type of signs; thus, cognitive strategies which prove to be effective for the creation of, for instance, graphic signs may be reused for the creation of linguistic signs.


2007 ◽  
Vol 7 (2) ◽  
pp. 267-287 ◽  
Author(s):  
Kerstin Kunz

Coreference is one essential strategy of coherence and cohesion as it establishes connectivity in texts. This connection is evoked by linguistic devices on the text surface but has to be interpreted mentally as a relation between extralinguistic referents. Since translators are concerned with the reception of connectivity in source texts and the production of the same kind of connectivity in target texts coreference is an important process taking place in translation. The present paper deals with the elaboration of a method for investigating nominal coreference in originals and translations. In order to build parameters for the empirical analysis of coreference in English and German corpora we provide an overview over various mechanisms affecting the creation of coreference relations in source and target texts. We take account of linguistic as well as extralinguistic aspects as interdependent and interacting factors potentially causing shifts in coreference. The model we establish on the basis of these considerations allows us to investigate nominal coreferring expressions as well as analyse the relation of reference identity created between these expressions. Hence, our model facilitates exhaustive research on a very fine-grained scale. It allows us to capture differences on the lexicogrammatical as well as on a semantic and conceptual level and, thus, paves the way for interpretation on a more conceptual level.


1998 ◽  
Vol 44 ◽  
pp. 161-171
Author(s):  
Gerhard Katzung ◽  
Karsten Obst

A very well exposed sandstone dyke swarm in the basement of Bornholm (Vang and Hammer granite) has been discovered recently north of Vang. It strikes 120" to 125" on average. Individual dykes are up to 23 cm thick. The fillings consist of pale, greyish to brownish, fine-grained to medium-grained quartz sandstone. It has a grain-supported structure, and the porespace is filled with argillaceouslimonitic material and carbonate (dolomite) cement. The opening and filling of the fissures were caused by normal extension movements in NNE-SSW direction in several steps, probably during the earIy Cambrian. The overlying Balka sands were implosively sucked down into the fissure vacuums caused by the sudden opening. The downwards moving of the water saturated sediments led to a loss of material above and to the creation of funnel structures. Tapering down ring structures in the Hardeberga sandstone at the east coast of Scania (Sweden) are interpreted as such funnel structures.


2020 ◽  
Vol 12 (1) ◽  
pp. 388-405
Author(s):  
Owain Jones ◽  
Kate Rigby ◽  
Linda Williams

Abstract In responding to the spatiotemporally specific geographies of extinction charted in the articles in this special section, this article reflects on the sociocultural factors that inform the ways in which extinction is framed and impede recognition of the enormity of the anthropogenic extinction event in which we are all bound. This article argues that we are living in an era of ecocide, where the degradation of biodiversity and eradication of species go hand-in-hand with the degradation and eradication of nonmodern culture and identity, and it explores some possible reasons why modern society is failing to respond to impending crisis. Fine-grained stories of spatiotemporally specific geographies of extinction can help to counter the logic of colonization and bring everyday ecocide into view. For the particular multispecies communities they concern, they can also feed into the creation of ritual practices of penitential mourning in ways that enable a collective grieving process poised to activate an ecosocial transformation. The authors consider the implications of grief and mourning—and of not mourning—in what can be seen as not only a terrible time but also the end of (lived) time. They conclude with some reflections of local acts of resistance, witnessing, and narrative.


2018 ◽  
Vol 941 ◽  
pp. 147-152
Author(s):  
Georgii Kodzhaspirov ◽  
Andrey Rudskoi

In recent years, great attention is paid to the creation of methods andthe technological processes providing ultrafine-grained state of metal materials including submicro - and nanocrystalline ones. It pertains to structural components and to the phases constituting the particular metal or alloy. The main development in terms of obtaining bulk metallic materials received in recent years, various schemes of processing of metals by plastic deformation, which allows to realize the so-called severe plastic deformation (SPD). Such approach usually propose realization of large plastic strains, providing a well-developed fragmented substructure with the creation of high angle misorientation of the boundaries between the fragments of the substructure. The second direction in receiving finely divided state is to create technologies that provide a significant refinement of phase as a result of processing. The most effective way of achieving both the above effects applied to bulk metallic materials is Thermomechanical Processing (TMP), which can be used as a standalone technology or in combination of such methods as accumulation roll bonding (ARB) or other similar SPD methods. This paper discusses various methods of thermomechanical processing, based on the use of hot, warm and cold deformation, in various combinations applied to single and multiphase steels, ensuring the achievement of ultra-fine grained structure with elements of submicro - and nanostructures.


2020 ◽  
Vol 43 ◽  
Author(s):  
Stefen Beeler-Duden ◽  
Meltem Yucel ◽  
Amrisha Vaish

Abstract Tomasello offers a compelling account of the emergence of humans’ sense of obligation. We suggest that more needs to be said about the role of affect in the creation of obligations. We also argue that positive emotions such as gratitude evolved to encourage individuals to fulfill cooperative obligations without the negative quality that Tomasello proposes is inherent in obligations.


Author(s):  
Richard S. Chemock

One of the most common tasks in a typical analysis lab is the recording of images. Many analytical techniques (TEM, SEM, and metallography for example) produce images as their primary output. Until recently, the most common method of recording images was by using film. Current PS/2R systems offer very large capacity data storage devices and high resolution displays, making it practical to work with analytical images on PS/2s, thereby sidestepping the traditional film and darkroom steps. This change in operational mode offers many benefits: cost savings, throughput, archiving and searching capabilities as well as direct incorporation of the image data into reports.The conventional way to record images involves film, either sheet film (with its associated wet chemistry) for TEM or PolaroidR film for SEM and light microscopy. Although film is inconvenient, it does have the highest quality of all available image recording techniques. The fine grained film used for TEM has a resolution that would exceed a 4096x4096x16 bit digital image.


Author(s):  
Steven D. Toteda

Zirconia oxygen sensors, in such applications as power plants and automobiles, generally utilize platinum electrodes for the catalytic reaction of dissociating O2 at the surface. The microstructure of the platinum electrode defines the resulting electrical response. The electrode must be porous enough to allow the oxygen to reach the zirconia surface while still remaining electrically continuous. At low sintering temperatures, the platinum is highly porous and fine grained. The platinum particles sinter together as the firing temperatures are increased. As the sintering temperatures are raised even further, the surface of the platinum begins to facet with lower energy surfaces. These microstructural changes can be seen in Figures 1 and 2, but the goal of the work is to characterize the microstructure by its fractal dimension and then relate the fractal dimension to the electrical response. The sensors were fabricated from zirconia powder stabilized in the cubic phase with 8 mol% percent yttria. Each substrate was sintered for 14 hours at 1200°C. The resulting zirconia pellets, 13mm in diameter and 2mm in thickness, were roughly 97 to 98 percent of theoretical density. The Engelhard #6082 platinum paste was applied to the zirconia disks after they were mechanically polished ( diamond). The electrodes were then sintered at temperatures ranging from 600°C to 1000°C. Each sensor was tested to determine the impedance response from 1Hz to 5,000Hz. These frequencies correspond to the electrode at the test temperature of 600°C.


Author(s):  
J. W. Mellowes ◽  
C. M. Chun ◽  
I. A. Aksay

Mullite (3Al2O32SiO2) can be fabricated by transient viscous sintering using composite particles which consist of inner cores of a-alumina and outer coatings of amorphous silica. Powder compacts prepared with these particles are sintered to almost full density at relatively low temperatures (~1300°C) and converted to dense, fine-grained mullite at higher temperatures (>1500°C) by reaction between the alumina core and the silica coating. In order to achieve complete mullitization, optimal conditions for coating alumina particles with amorphous silica must be achieved. Formation of amorphous silica can occur in solution (homogeneous nucleation) or on the surface of alumina (heterogeneous nucleation) depending on the degree of supersaturation of the solvent in which the particles are immersed. Successful coating of silica on alumina occurs when heterogeneous nucleation is promoted and homogeneous nucleation is suppressed. Therefore, one key to successful coating is an understanding of the factors such as pH and concentration that control silica nucleation in aqueous solutions. In the current work, we use TEM to determine the optimal conditions of this processing.


Author(s):  
C. P. Doğan ◽  
R. D. Wilson ◽  
J. A. Hawk

Capacitor Discharge Welding is a rapid solidification technique for joining conductive materials that results in a narrow fusion zone and almost no heat affected zone. As a result, the microstructures and properties of the bulk materials are essentially continuous across the weld interface. During the joining process, one of the materials to be joined acts as the anode and the other acts as the cathode. The anode and cathode are brought together with a concomitant discharge of a capacitor bank, creating an arc which melts the materials at the joining surfaces and welds them together (Fig. 1). As the electrodes impact, the arc is extinguished, and the molten interface cools at rates that can exceed 106 K/s. This process results in reduced porosity in the fusion zone, a fine-grained weldment, and a reduced tendency for hot cracking.At the U.S. Bureau of Mines, we are currently examining the possibilities of using capacitor discharge welding to join dissimilar metals, metals to intermetallics, and metals to conductive ceramics. In this particular study, we will examine the microstructural characteristics of iron-aluminum welds in detail, focussing our attention primarily on interfaces produced during the rapid solidification process.


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