scholarly journals Analogicity in Computer Science. Methodological Analysis

2020 ◽  
Vol 63 (1) ◽  
pp. 69-86
Author(s):  
Paweł Stacewicz
Keyword(s):  
Computer Science ◽  
Turing Machine ◽  
Theoretical Models ◽  
Computational Power ◽  
Philosophical Discussion ◽  
Natural Processes ◽  
Universal Turing Machine ◽  
The Subject

AbstractAnalogicity in computer science is understood in two, not mutually exclusive ways: 1) with regard to the continuity feature (of data or computations), 2) with regard to the analogousness feature (i.e. similarity between certain natural processes and computations). Continuous computations are the subject of three methodological questions considered in the paper: 1a) to what extent do their theoretical models go beyond the model of the universal Turing machine (defining digital computations), 1b) is their computational power greater than that of the universal Turing machine, 1c) under what conditions are continuous computations realizable in practice? The analogue-analogical computations lead to two other issues: 2a) in what sense and to what extent their accuracy depends on the adequacy of certain theories of empirical sciences, 2b) are there analogue-analogical computations in nature that are also continuous? The above issues are an important element of the philosophical discussion on the limitations of contemporary computer science.

scholarly journals The diffusion and influence of theoretical models of information behaviour. The case of Savolainen's ELIS model

2020 ◽  
Vol 76 (5) ◽  
pp. 1069-1089
Author(s):  
Aurora González-Teruel ◽  
Margarita Pérez-Pulido
Keyword(s):  
Social Capital ◽  
Computer Science ◽  
Empirical Data ◽  
Design Methodology ◽  
Theoretical Models ◽  
Absolute Number ◽  
General Context ◽  
Research Issue ◽  
Content Type ◽  
The Subject

PurposeTo ascertain the diffusion and influence of Savolainen's ELIS model and its use as a theoretical and/or methodological basis for research.Design/methodology/approachA context citation analysis was made of the work where this researcher published his model. Analysis covered the year of publication, the type of work and the subject matter of the citing documents concerned. In-context citations were analysed for their frequency in each citing text, style, location and content cited.FindingsThe ELIS model received 18.5 cites/year. 20.2 per cent of them corresponded to papers published in journals in other areas, mainly computer science. The average of cites per paper was 1.8; 64.5 percent of the citing works cited them only once. 60 per cent of the cites were considered essential. Only 13.7 per cent of these cites appear in theory or methods. 37 per cent of the citing documents contained no concept relating to the model.Research limitations/implicationsThe method used focuses on the most direct context of a cite (sentence or paragraph), but isolates it from the general context (full document, other documents by the author or their social capital). It has, however, allowed this research issue to be dealt with under laboratory conditions and revealed nuances hidden by the absolute number of cites.Originality/valueIt has become evident that the dissemination and influence of the ELIS model are less than what the total number of cites indicates and that it has scarcely been incorporated into research design. Despite its popularity, it is not being validated and/or refuted by way of empirical data.

Molecular Modeling as the Spark for Active Learning Approaches for Interdisciplinary Biology Teaching

2018 ◽  
Author(s):  
Antoine Taly ◽  
Francesco Nitti ◽  
Marc Baaden ◽  
samuela pasquali
Keyword(s):  
High School ◽  
High School Students ◽  
Molecular Modeling ◽  
Active Learning ◽  
Computer Science ◽  
Poster Presentation ◽  
Learning Approaches ◽  
School Students ◽  
The Subject ◽  
The Origin Of Life

<div>We present here an interdisciplinary workshop on the subject of biomolecules offered to undergraduate and high-school students with the aim of boosting their interest toward all areas of science contributing to the study of life. The workshop involves Mathematics, Physics, Chemistry, Computer Science and Biology. Based on our own areas of research, molecular modeling is chosen as central axis as it involves all disciplines. In order to provide a strong biological motivation for the study of the dynamics of biomolecules, the theme of the workshop is the origin of life. </div><div>All sessions are built around active pedagogies, including games, and a final poster presentation.</div>

scholarly journals Undecidability in quantum thermalization

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Naoto Shiraishi ◽  
Keiji Matsumoto
Keyword(s):  
Turing Machine ◽  
Thermal Equilibrium ◽  
General Theorem ◽  
Nearest Neighbour ◽  
Many Body ◽  
Initial State ◽  
One Dimensional ◽  
Universal Turing Machine ◽  
Many Body Systems ◽  
Neighbour Interaction

AbstractThe investigation of thermalization in isolated quantum many-body systems has a long history, dating back to the time of developing statistical mechanics. Most quantum many-body systems in nature are considered to thermalize, while some never achieve thermal equilibrium. The central problem is to clarify whether a given system thermalizes, which has been addressed previously, but not resolved. Here, we show that this problem is undecidable. The resulting undecidability even applies when the system is restricted to one-dimensional shift-invariant systems with nearest-neighbour interaction, and the initial state is a fixed product state. We construct a family of Hamiltonians encoding dynamics of a reversible universal Turing machine, where the fate of a relaxation process changes considerably depending on whether the Turing machine halts. Our result indicates that there is no general theorem, algorithm, or systematic procedure determining the presence or absence of thermalization in any given Hamiltonian.

Mate availability facilitates cannibalistic behaviour in a nest brooding fish: effects of timing during the brood cycle

Behaviour ◽  
2011 ◽  
Vol 148 (2) ◽  
pp. 247-264 ◽  
Author(s):  
Masanori Kohda ◽  
Nobuhiro Ohnishi ◽  
Noboru Okuda ◽  
Tomohiro Takeyama ◽  
Omar Myint
Keyword(s):  
Laboratory Experiments ◽  
Gravid Female ◽  
Theoretical Models ◽  
Filial Cannibalism ◽  
Mate Availability ◽  
Stimulus Female ◽  
Trade Offs ◽  
Future Reproduction ◽  
Cannibalistic Behaviour ◽  
The Subject

AbstractFilial cannibalism, eating one's own viable offspring, is accepted as an adaptive response to trade-offs between current and future reproduction. Theoretical models predict that high mate availability may induce more filial cannibalism, but this prediction is rarely tested. To examine this prediction, we performed laboratory experiments using the nest breeding goby Rhinogobius flumineus. Subject males were allowed to mate with a gravid female and care for the broods. A separate gravid female housed in a small cage (stimulus-female) was shown to the subject males at one of three different points during the brood cycle: prior to spawning, within 1 day after spawning and 1 week after spawning. Empty cages were shown as a control. Males that were shown the stimulus-female before spawning cannibalised more eggs than control males. In contrast, males that were shown the stimulus-females after spawning cannibalised as few eggs as control males did. Additionally, males that were shown the stimulus-female prior to spawning did not court females more intensively than other males. Thus, we suggest that the presence of an additional mate, rather than energy expenditure associated with courtship directed toward an additional mate, can facilitate males to cannibalise their eggs.

scholarly journals Reproduction of Semantic Content of Subjects, Predicates, and Objects and Its Dependence on the Use Of Attributes and Adverbial Modifiers in Sentence Composition

2021 ◽  
pp. 30-47
Author(s):  
Sergey V. Malanov ◽  
◽  
Marina S. Polyakova ◽  
Keyword(s):  
Theoretical Models ◽  
Semantic Content ◽  
Additional Research ◽  
Independent Variables ◽  
Wide Range ◽  
Dependent Variables ◽  
The Subject ◽  
Adverbial Modifiers

In the article describes the influence of syntactic organization of speech utterances on peculiarities of actualization and reproduction of their subject-semantic content (meanings). There has been tested the hypotheses that the semantic content of subjects, predicates, and objects is reproduced more efficiently: 1) when attributes are used in the composition of statements with nouns (subjects and objects), and with verbs (predicates) – adverbial modifiers; 2) when there is a deliberate focus on highlighting the semantic content of nouns or verbs in the composition of statements. The methods of varying lexical and syntactic means in the text composition presented to respondents were used as independent variables. The language means respondents used to manifest fragments of semantic content were analyzed as dependent variables. The study involved 90 respondents (72 men, 18 women) aged 25-40. While the first hypothesis has been confirmed, the second still requires additional research. The results obtained indicate that in updating and reproducing the subject-semantic content of speech utterances it is the attribution of signs and properties to objects and processes that is of great importance.The experimental organization scheme used in the study reveals a wide range of patterns that can serve to confirm / refute various hypotheses and theoretical models in psycholinguistics.

scholarly journals Global Publications Output in Quantum Computing Research: A Scientometric Assessment during 2007-16

2018 ◽  
Vol 2 (4) ◽  
Author(s):  
S. M. Dhawan ◽  
B.M. Gupta ◽  
Sudhanshu Bhusan
Keyword(s):  
Quantum Computing ◽  
Computer Science ◽  
Citation Index ◽  
National Level ◽  
The Usa ◽  
The Subject ◽  
Scopus Database ◽  
Using Data ◽  
Scientometric Assessment ◽  
Highly Cited

The paper maps quantum computing research on various publication and citation indicators, using data from Scopus database covering 10-year period 2007-16. Quantum computing research cumulated 4703 publications in 10 years, registered a slow 3.39% growth per annum, and averaged 14.30 citations per paper during the period. Top 10 countries dominate the field with 93.15% global publications share. The USA accounted for the highest 29.98% during the period. Australia tops in relative citation index (2.0).  International collaboration has been a major driver of research in the subject; 14.10% to 62.64% of national level output of top 10 countries appeared as international collaborative publications. Computer Science is one of the most popular areas of research in quantum computing research. The study identifies top 30 most productive organizations and authors, top 20 journals reporting quantum computing research, and 124 highly cited papers with 100+ citations per paper.

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