Economic Computing in the 1990s; Recent Developments in Personal Computer Hardware

1991 ◽  
Vol 101 (409) ◽  
pp. 1611 ◽  
Author(s):  
Christopher J. Hammond
Keyword(s):  
Personal Computer ◽  
Computer Hardware ◽  
Recent Developments

scholarly journals Molecular Dynamics and Machine Learning in Catalysts

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1129
Author(s):  
Wenxiang Liu ◽  
Yang Zhu ◽  
Yongqiang Wu ◽  
Cen Chen ◽  
Yang Hong ◽  
...  
Keyword(s):  
Machine Learning ◽  
Molecular Dynamics ◽  
Large Scale ◽  
Reaction Force ◽  
Catalyst Design ◽  
Computer Hardware ◽  
Ab Initio Molecular Dynamics ◽  
Oxidation Reactions ◽  
Recent Developments ◽  
Promising Development

Given the importance of catalysts in the chemical industry, they have been extensively investigated by experimental and numerical methods. With the development of computational algorithms and computer hardware, large-scale simulations have enabled influential studies with more atomic details reflecting microscopic mechanisms. This review provides a comprehensive summary of recent developments in molecular dynamics, including ab initio molecular dynamics and reaction force-field molecular dynamics. Recent research on both approaches to catalyst calculations is reviewed, including growth, dehydrogenation, hydrogenation, oxidation reactions, bias, and recombination of carbon materials that can guide catalyst calculations. Machine learning has attracted increasing interest in recent years, and its combination with the field of catalysts has inspired promising development approaches. Its applications in machine learning potential, catalyst design, performance prediction, structure optimization, and classification have been summarized in detail. This review hopes to shed light and perspective on ML approaches in catalysts.

scholarly journals On More or Less Appropriate Notions of ‘Computation’

2018 ◽  
Vol 30 (1) ◽  
Author(s):  
Stefan Gruner ◽  
Andrew Gravell
Keyword(s):  
Computer Science ◽  
Academic Discipline ◽  
Natural Sciences ◽  
Computer Hardware ◽  
Classical Notion ◽  
Recent Developments ◽  
Historical Semantics ◽  
The Church

Half a century after the emergence of computer science (a.k.a. informatics) as an academic discipline, the notion of “computation” is not yet “settled”. On the contrary: recent developments in the natural sciences, in mathematics, as well as in computer hardware engineering have also shaken the belief in the sufficiency of the “classical” notion of “computation” from the tradition of the Church-Turing-Hypothesis. In this paper we review the recent discourse on what is “computation”, and we clarify our own position within this discourse. Although we present some arguments about which notions of “computation” may be considered “reasonably acceptable” for our own historic era, we also emphasize that every science-philosophical notion (including the notion of “computation”) has its own long-term historical semantics which cannot be fixed once and forever. At this point in time, however, no compelling assertion can yet be made about the possibility of “hypercomputation” as proper computation.

scholarly journals Volume-Averaged Modeling of Multiphase Flow Phenomena during Alloy Solidification

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 229 ◽  
Author(s):  
Menghuai Wu ◽  
Andreas Ludwig ◽  
Abdellah Kharicha
Keyword(s):  
Dendritic Morphology ◽  
Computer Hardware ◽  
Shrinkage Cavity ◽  
Limiting Factor ◽  
Formation Mechanisms ◽  
Solidification Model ◽  
Solidification Processes ◽  
Recent Developments ◽  
Flow Phenomena ◽  
Application Potential

The most recent developments and applications in volume-averaged modeling of solidification processes have been reviewed. Since the last reviews of this topic by Beckermann and co-workers [Applied Mech. Rev. 1993, p. 1; Annual Rev. Heat Transfer 1995, p. 115], major progress in this area has included i) the development of a mixed columnar-equiaxed solidification model; ii) further consideration of moving crystals and crystal dendritic morphology; and iii) the model applications to analyze the formation mechanisms of macrosegregation, as-cast structure, shrinkage cavity and porosity in different casting processes. The capacity of computer hardware is still a limiting factor. However, many calculation examples, as verified by the laboratory casting experiments, or even by the casting processes at a small industrial scale, show great application potential. Following the trend of developments in computer hardware (projection according to Moore’s law), a full 3D calculation of casting at the industry scale with the multiphase volume-averaged solidification models will become practically feasible in the foreseeable future.

Tugas Komputer APRIANI (0305193142)

2020 ◽  
Author(s):  
Apriani
Keyword(s):  
Personal Computer ◽  
Computer Hardware

Perangkat keras didefinisikan sebagai komponen-komponen perangkat yang dapat ditangkap dengan indra peraba manusia. Perangkat keras komputer (computer hardware) adalah komponen-komponen fisik yang membentuk satu kesatuan sistem Personal Computer (PC). Biasanya perangkat- perangkat ini dirakit dan sebagian besar dimasukkan ke dalam sebuah casing komputer dan sebagian lain berada di luar casing.

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