850 research outputs found
Prove comparative di dieci portinnesti del pesco nella Maremma laziale
No full textL'influenza di dieci portinnesti sulla crescita vegetativa e sugli aspetti quali-quantitativi della produzione di una cultivar di pesco, May Crest, e di una cultivar di nettarina, Maria Emilia, allevate a sesti ridotti, è stata sutudiata nell'ambiente della Maremma laziale. I portinnesti comprendevano selezioni di susino (GF 1869, GF 43, GF 655/2 e Mr.S. 2/5), l'ibrido pesco x mandorlo GF 677 e selezioni di pesco (P.S. A5, P.S. A6, P.S. B2, P.S. C14 e Rubira). GF 677 ha determinato una elevata vigoria e buoni risultati produttivi. Le selezioni di pesco hanno presentato produzioni di poco inferiori a GF 677. Le selezioni di susino hanno ridotto il volume della chioma e la produzione per pianta; tra di essi, GF 1869 ha dato i risultati complessivamente meno soddisfacenti. L'efficienza produttiva, calcolata come rapporto tra produzione cumulata di un quadriennio e volume della chioma, è risultata simile nei dieci portinnesti
A time-variable, phase-dependent emission line in the X-ray spectrum of the isolated neutron star RXJ0822–4300
No full textRX J0822−4300 is the central compact object associated with the Puppis A supernova remnant. Previous X-ray observations suggested RX J0822−4300 to be a young neutron star with a weak dipole field and a peculiar surface temperature distribution dominated by two antipodal spots with different temperatures and sizes. An emission line at 0.8 keV was also detected. We performed a very deep (130-ks) observation with XMM–Newton, which allowed us to study in detail the phase-resolved properties of RX J0822−4300. Our new data confirm the existence of a narrow spectral feature, best modelled as an emission line, only seen in the ‘soft’-phase interval – when the cooler region is best aligned to the line of sight. Surprisingly, comparison of our recent observations to the older ones yields evidence for a variation in the emission-line component, which can be modelled as a decrease in the central energy from ∼0.80 keV in 2001 to ∼0.73 keV in 2009–10. The line could be generated via cyclotron scattering of thermal photons in an optically-thin layer of gas, or, alternatively, it could originate in low-rate accretion by a debris disc. In any case, a variation in energy, pointing to a variation of the magnetic field in the line-emitting region, cannot be easily accounted for
Language Engineering in Grammatical Framework (GF)
No full textThis thesis describes a number of practical experiments rather than theoreticalinvestigations in the area of natural language processing. The basis forthe work presented is Grammatical Framework (GF). It is a very complexsystem, which comprises among other things a grammar formalism based ontype theory and its implementation written in Haskell. GF is intended forhigh-quality machine translation (of INTERLINGUA type) in the restrictedlanguage domains.The primary concern of this thesis is however limited to the usage of GFas a piece of software. The main results are: Implementing a syntax editor, which provides a graphical user interface(GUI) for the command-line GF core. Writing a part of code for automatic generation of gramletspure Javaprograms with limited (compared to GF) functionality that can be runon PDA (Portable Device Assistants) and as applets in a browser. Writing the Russian resource grammar that takes care of the most basicmorphological and syntactic rules and serves as a standard libraryfor building application grammars (describing restricted language domains)in Russian.These results contribute to language engineering in GF on two differentlevels: Author level (end-user) constructing sentences in natural languages. Grammarian level building a grammar description, which is laterused on the author level.The last part of the thesis deals with a non-linguistic domain. In thatexperiment we try to apply functional parsing technique to the well-knownproblem of protein secondary structure prediction (bioinformatics)
Language Engineering in Grammatical Framework (GF)
No full textThis thesis describes a number of practical experiments rather than theoreticalinvestigations in the area of natural language processing. The basis forthe work presented is Grammatical Framework (GF). It is a very complexsystem, which comprises among other things a grammar formalism based ontype theory and its implementation written in Haskell. GF is intended forhigh-quality machine translation (of INTERLINGUA type) in the restrictedlanguage domains.The primary concern of this thesis is however limited to the usage of GFas a piece of software. The main results are: Implementing a syntax editor, which provides a graphical user interface(GUI) for the command-line GF core. Writing a part of code for automatic generation of gramletspure Javaprograms with limited (compared to GF) functionality that can be runon PDA (Portable Device Assistants) and as applets in a browser. Writing the Russian resource grammar that takes care of the most basicmorphological and syntactic rules and serves as a standard libraryfor building application grammars (describing restricted language domains)in Russian.These results contribute to language engineering in GF on two differentlevels: Author level (end-user) constructing sentences in natural languages. Grammarian level building a grammar description, which is laterused on the author level.The last part of the thesis deals with a non-linguistic domain. In thatexperiment we try to apply functional parsing technique to the well-knownproblem of protein secondary structure prediction (bioinformatics)
Language Engineering in Grammatial Framework (GF)
No full textThe basis for the work presented is Grammatical Framework (GF)a grammar
formalism based on type theory. It is also a powerful language processor
that provides a convenient framework for various multilingual applications.
The primary concern of this thesis is the usage of GF as a piece of software.
The main results are:
Implementing a syntax editor, which provides a graphical user interface
(GUI) for the command-line GF core.
Writing the Russian resource grammar that takes care of the most
basic morphological and syntactic rules and serves as a standard library
for building application grammars (describing sublanguage domains) in
Russian.
These results contribute to language engineering in GF on two different
levels:
Author level (end-user)constructing documents in natural languages.
Grammarian level building a grammar description, which is later
used on the author level. One can also distinguish between application
and resource grammars. An application grammar focuses of a particular
sub-language domain, while resource grammar is a general-purpose
grammar that forms a basis for application grammars
Internship at GoFoton GF Micro Optics Philippines, Inc.
No full textThis paper is a compilation of the internship of the author in the 1st semester of the academic year 2012-2013. It serves as a documentation of the activities that transpired in the internship of the author in GF Micro Optics Philippines, Inc. from May, 1012 until August, 2012.
Included in this paper are the company profile, experiences of the author in the company, and the tasks assigned while taking the training course. Process flow improvement was the main task of the author as his main role under the Industrial Engineering Department of GF Micro Optics Philippines, Inc.
Furthermore, the paper includes problems encountered and lessons learned by the author throughout the training course. These lessons include time management, co-worker management, task management, and enhancement of the authors whole being and skills such as problem solving. All are explained in this manuscript in order to provide self and academic evaluation of the authors training
Linear complexity profile of sequences over the field GF(Q)
No full textSummary form only given. The author extends Reuppel's concept of the linear complexity profile of binary sequences to sequences over an arbitrary finite field and provides formulas for the expected linear complexity and its variance of sequences Sn of length n over GF(q). He shows that the variance approaches 1/q when q approaches ∞. He presents criteria that could be useful when using the linear complexity profile for investigating the randomness of sequences over GF(q). Finally, the author investigates how useful these criteria are by comparing the results with other randomness tests
Linear complexity profile of sequences over the field GF(Q)
No full textSummary form only given. The author extends Reuppel's concept of the linear complexity profile of binary sequences to sequences over an arbitrary finite field and provides formulas for the expected linear complexity and its variance of sequences Sn of length n over GF(q). He shows that the variance approaches 1/q when q approaches ∞. He presents criteria that could be useful when using the linear complexity profile for investigating the randomness of sequences over GF(q). Finally, the author investigates how useful these criteria are by comparing the results with other randomness tests
Thesis for the Degree of Doctor of Philosophy Language Engineering in Grammatical Framework (GF)
No full textThe basis for the work presented is Grammatical Framework (GF) — a grammar formalism based on type theory. It is also a powerful language processor that provides a convenient framework for various multilingual applications. The primary concern of this thesis is the usage of GF as a piece of software. The main results are: • Implementing a syntax editor, which provides a graphical user interface (GUI) for the command-line GF core. • Writing the Russian resource grammar that takes care of the most basic morphological and syntactic rules and serves as a standard library for building application grammars (describing sublanguage domains) in Russian. These results contribute to language engineering in GF on two different levels: • Author level (end-user) — constructing documents in natural languages. • Grammarian level — building a grammar description, which is later used on the author level. One can also distinguish between application and resource grammars. An application grammar focuses of a particular sub-language domain, while resource grammar is a general-purpose grammar that forms a basis for application grammars
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