749 research outputs found
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Edwards Way, Manea, Cambridgeshire: An Archaeological Evaluation
No full textAn archaeological evaluation was undertaken to address a pre-determination condition placed upon planning consent for the construction of houses with associated services and access at Edwards Way, Manea (NGR TL 4779 8949). Twelve trenches, totalling 162m were excavated. Several furrow remnants and modern drainage features were identified, although no archaeology was revealed
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Manea Colony Investigations Interim Report No. 3
No full textDuring September-October 2016 the Cambridge Archaeological Unit (CAU) in partnership with Wisbech’s Octavia Hill Birthplace House conducted fieldwork in Manea Fen, Cambridgeshire (TL 5122 9178; Figure 1), on the site of a former settlement originally established in the 1830s as an experimental Utopian community. This was undertaken with a team of volunteers as part of the Ouse Washes Landscape Partnership in thescheme’s third and final year of a Heritage Lottery Grant
Testing Generalised Freeness of Words
No full textPseudo-repetitions are a natural generalisation of the classical notion of repetitions in sequences: they are the repeated concatenation of a word and its encoding under a certain morphism or antimorphism (anti-/morphism, for short). We approach the problem of deciding efficiently, for a word w and a literal anti-/morphism f, whether w contains an instance of a given pattern involving a variable x and its image under f, i.e., f(x). Our results generalise both the problem of finding fixed repetitive structures (e.g., squares, cubes) inside a word and the problem of finding palindromic structures inside a word. For instance, we can detect efficiently a factor of the form xx^Rxxx^R, or any other pattern of such type. We also address the problem of testing efficiently, in the same setting, whether the word w contains an arbitrary pseudo-repetition of a given exponent
Nanozymes: Gold-nanoparticles-based Transphosphorylation Catalysts
No full textParticularly effective: The self-assembly of triazacyclonane-functionalized thiols on the surface of nanosize gold particles provides a facile entry to functional gold nanoparticles that, upon complexation with ZnII, turn into powerful catalysts for the cleavage of phosphate esters (see scheme). Because of their RNase-like behavior they are dubbed nanozymes
Complexity-preserving simulations among three variants of accepting networks of evolutionary processors
No full textIn this paper we consider three variants of accepting networks of evolutionary processors. It is known that two of them are equivalent to Turing machines. We propose here a direct simulation of one device by the other. Each computational step in one model is simulated in a constant number of computational steps in the other one while a translation via Turing machines squares the time complexity. We also discuss the possibility of constructing simulations that preserve not only complexity, but also the shape of the simulated network. © 2011 Springer Science+Business Media B.V.This work was supported by the Academy of Finland, projects 132727, 122426, and 108421. F. Manea acknowledges the support from the Alexander von Humboldt Foundation. J Sempere acknowledges the support from the Spanish Ministerio de Educacion y Ciencia project TIN2007-60769.Bottoni ., P.; Labella ., A.; Manea ., F.; Mitrana, V.; Petre ., I.; Sempere Luna, JM. (2011). Complexity-preserving simulations among three variants of accepting networks of evolutionary processors. Natural Computing. 10(1):429-445. https://doi.org/10.1007/s11047-010-9238-5S429445101Alhazov A, Bel Enguix G, Rogozhin Y (2009a) Obligatory hybridnetworks of evolutionary processors. In: International conference on agents and artificial intelligence (ICAART 2009), pp 613–618Alhazov A, Csuhaj-Varj E, Martn-Vide C, Rogozhin Y (2009b) On the size of computationally complete hybrid networks ofevolutionaryprocessors. Theor Comput Sci 410:3188–3197Bottoni P, Labella A, Manea F, Mitrana V, Sempere J (2009a) Filter position in networks of evolutionary processors does not matter: a direct proof. In: Proc. 15th international meeting on DNA computing and molecular programming. 8–11 June 2009, Fayetteville, ArkansasBottoni P, Labella A, Mitrana V, Sempere JM (2009b) Networks of evolutionary picture processors with filtered connections. In: Unconventional computation, 8th international conference (UC 2009), LNCS, vol 5715. Springer, Heidelberg, pp 70–84Castellanos J, Martín-Vide C, Mitrana V, Sempere J (2001) Solving NP-complete problems with networks of evolutionary processors. In: International work-conference on artificial and natural neural networks (IWANN 2001), Lecture notes in computer science, vol 2084, pp 621–628Csuhaj-Varjú E, Mitrana V (2000) Evolutionary systems: a language generating device inspired by evolving communities of cells. Acta Inform 36:913–926Csuhaj-Varjú E, Salomaa A (1997) Networks of parallel language processors. In: New trends in formal languages, Lecture notes in computer science, vol 1218, pp 299–318Dassow J, Truthe B (2007) On the power of networks of evolutionary processors. In: Machines, computations, and universality (MCU 2007), Lecture notes in computer science, vol 4667, pp 158–169Drăgoi C, Manea F (2008) On the descriptional complexity of accepting networks of evolutionary processors with filtered connections. Int J Found Comput Sci 19:1113–1132Drăgoi C, Manea F, Mitrana V (2007) Accepting networks of evolutionary processors with filtered connections. J Univers Comput Sci 13:1598–1614Errico L, Jesshope C (1994) Towards a new architecture for symbolic processing. In: Artificial intelligence and information-control systems of robots ’94, World Scientific, Singapore, pp 31–40Fahlman SE, Hinton GE, Seijnowski TJ (1983) Massively parallel architectures for AI: NETL, THISTLE and Boltzmann machines. In: Proc. of the national conference on artificial intelligence, pp 109–113Hillis W (1985) The connection machine. MIT Press, CambridgeManea F, Martin-Vide C, Mitrana V (2007) On the size complexity of universal accepting hybrid networks of evolutionary processors. Math Struct Comput Sci 17:753–771Margenstern M, Mitrana V, Perez-Jimenez M (2005) Accepting hybrid networks of evolutionary systems. In: DNA based computers 10, Lecture notes in computer science, vol, pp 235–246Martín-Vide C, Mitrana V (2005) Networks of evolutionary processors: results and perspectives. In: Molecular computational models: unconventional approaches. dea Group Publishing, Hershey, pp 78–114Păun G (2000) Computing with membranes. J Comput Syst Sci 61:108–143Păun G, Sântean L (1989) Parallel communicating grammar systems: the regular case. Ann Univ Bucharest Ser Matematica Inform 38:55–63Rozenberg G, Salomaa A (eds) (1997) Handbook of formal languages. Springer–Verlag, BerlinSankoff D et al. (1992) Gene order comparisons for phylogenetic inference: evolution of the mitochondrial genome. Proc Natl Acad Sci USA 89:6575–657
Guide to Good Practice in using Open Source Compilers with the AGCC Lexical Analyzer
No full textQuality software always demands a compromise between users' needs and hardware resources. To be faster means expensive devices like powerful processors and virtually unlimited amounts of RAM memory. Or you just need reengineering of the code in terms of adapting that piece of software to the client's hardware architecture. This is the purpose of optimizing code in order to get the utmost software performance from a program in certain given conditions. There are tools for designing and writing the code but the ultimate tool for optimizing remains the modest compiler, this often neglected software jewel the result of hundreds working hours by the best specialists in the world. Even though, only two compilers fulfill the needs of professional developers, a proprietary solution from a giant in the IT industry, and the Open source GNU compiler, for which we develop the AGCC lexical analyzer that helps producing even more efficient software applications. It relies on the most popular hacks and tricks used by professionals and discovered by the author who are proud to present them further below.registers, dynamic linkage, cache, null pointers, tweaking
A LEXICOGRAPHER’S REMARKS ON SOME OF THE VOCABULARY DIFFICULTIES AND CHALLENGES THAT LEARNERS OF ENGLISH HAVE TO COPE WITH – AND A FEW SUGGESTIONS CONCERNING A SERIES OF COMPLEX DICTIONARIES
No full textThe present paper aims at stressing the need for applied linguistics in dealing
with didactic and lexicographical instruments, not only in the traditional manner, but also – or
mainly – in the novel modalities suggested and allowed by the new information and communication
technologies, concepts and devices. Proceeding from the contrastive and didactic view of the lexicon
and the lexicographer’s task, and also taking advantage of the various models that good learner’s
dictionaries in use have already set, the author presents the main aspects involved by compiling a
complex, grammaticized Romanian-English dictionary – in fact, one of a larger series projected. In
such a complex / grammaticized Romanian-English dictionary, meant as a polyfunctional, flexible,
ready-to-use tool of learning, based on an interconnective approach blending the semantic
description proper and the grammatical regimen, every relevant item is explained in terms of
grammatical usage, and relevant diverging data about morphological markers and irregularities,
collocation and syntactic rules, pronunciation, spelling are provided, as well as a number of frequent
Romanian proper names with their English equivalents. To do that, an accessible code-system was
used. The material that was used as illustrations in the present approach was provided by the
author’s experience as a lexicographer and teacher. Similarly, the development is proposed of
interactive, software implements usable by advanced students, and also by translators and teachers of
ESL; such devices can be a valuable help, a kind of learn-while-working instruments, combining the
classical dictionary and the grammar manual, plus the efficiency and rapidity of modern ICT. After
mentioning and illustrating the main problems related to the lexicon within the field of TEFL (viz.
contrastive semantics, collocation, anomalous grammatical forms, divergent spelling and
pronunciation, divergent phraseological and syntactic structures, idiom, proper nouns, lexical and
semantic fields, synonymy and related terms), the author goes on to present the main priorities
implied by the complex dictionary mentioned above (which is ready for print), and then a synopsis of
the experience represented by the compilation of a pair of pocket-size bilingual dictionaries, and the
main aspects of the activity in the field of applied linguistics that is involved by the lexicographer’s
efforts. To this were added similar illustrations, the fruits of the author’s personal experience and
reflective writing, meant to provide part of the database usable for furthering this didactic endeavour
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Manea Colony Investigations Excavation Report No. 3
No full textDuring September 2016 the Cambridge Archaeological Unit in partnership with Octavia Hill Birthplace House undertook survey and trial excavation of Manea Fen Colony. Established in 1838, this was a Utopian socialist community inspired by the principles of the Owenite movement, most notably fostering a cooperative ethos. Documentary sources illustrate that a substantial built environment was constructed by the Colonists, where only a cottage and barn were previously standing. The Colony – named after its founder, William Hodson, as the Hodsonian Community – was of mixed success and only short duration, disbanding in February 1841, just 25- months beyond its beginnings. Following after this Utopian experiment, the site continued to be occupied until 1961 when the last remaining buildings were demolished and the site returned to arable farmland. The project’s aim was to characterise the site’s archaeological potential for (i) addressing questions concerning the nature and development of nineteenth century socialism, (ii) mapping the distribution of buildings and other features of the settlement’s original and changing outline plan, and (iii) to determine the local legacy of Utopia. The project was undertaken with a team of volunteers as part of the Ouse Washes Landscape Partnership in the scheme’s third and final year of a Heritage Lottery Grant. The project’s fieldwork included surface collection of artefacts, magnetic and earth resistance geophysical surveys, test pitting and trial trenching (totalling 522.5m2). A total of 11,553 finds were recorded, weighing 289.459kg
Simultaneous/selective detection of dopamine and ascorbic acid at synthetic zeolite-modified/graphite-epoxy composite macro/quasi-microelectrodes
No full textThe present paper aims to miniaturize a graphite-epoxy and synthetic
zeolite-modified graphite-epoxy composite macroelectrode as a quasi-microelectrode
aiming in vitro and also, envisaging in vivo simultaneous electrochemical detection of
dopamine (DA) and ascorbic acid (AA) neurotransmitters, or DA detection in the presence
of AA. The electrochemical behavior and the response of the designed materials to the
presence of dopamine and ascorbic acid without any protective membranes were studied by
cyclic voltammetry and constant-potential amperometry techniques. The catalytic effect
towards dopamine detection was proved for the synthetic zeolite-modified graphite-epoxy
composite quasi-microelectrode, allowing increasing the sensitivity and selectivity for this
analyte detection, besides a possible electrostatic attraction between dopamine cation and
the negative surface of the synthetic zeolite and electrostatic repulsion with ascorbic acid
anion. Also, the synthetic zeolite-modified graphite-epoxy composite quasi-microelectrode
gave the best electroanalytical parameters for dopamine detection using constant-potential
amperometry, the most useful technique for practical applications
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