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691The fields of application of general relativity (GR) and quantum field theory (QFT) are different, so most situations require the use of only one of the two theories. The overlaps occur in regions of extremely small size and high mass, such as the black hole or the early universe (immediately after the Big Bang). This conflict is supposed to be solved only by unifying gravity with the other three interactions, to integrate GR and QFT into one theory. At the cosmological level, the standard cos…Read more
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1565Épistémologie des services de renseignementMultiMedia Publishing. 2020.Une analogie entre les aspects épistémologiques et méthodologiques de l'activité des services de renseignement et certaines disciplines scientifiques, en préconisant une approche plus scientifique du processus de collecte et d'analyse de l'information au sein du cycle du renseignement. J'affirme que les aspects théoriques, ontologiques et épistémologiques de l'activité de nombreux services de renseignement sont sous-estimés, ce qui conduit à une compréhension incomplète des phénomènes actuels et…Read more
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600Since string theory has not been able to explain phenomena to date, it may seem that this confirms Feyerabend's view that there is no "method" of science. And yet, string theory is still the most active research program for quantum gravity. But, compared to other non-falsifiable theories, this has something extra, especially mathematical language, with a clear logic of deductions. Up to a point it can reproduce classical gauge theories and general relativity. And there is hope that in the not to…Read more
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802Beginner's Guide for Cybercrime InvestigatorsMultiMedia Publishing. 2014.In the real world there are people who enter the homes and steal everything they find valuable. In the virtual world there are individuals who penetrate computer systems and "steal" all your valuable data. Just as in the real world, there are uninvited guests and people feel happy when they steal or destroy someone else's property, the computer world could not be deprived of this unfortunate phenomenon. It is truly detestable the perfidy of these attacks. For if it can be observed immediately th…Read more
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477Les partisans de Popper ont fait valoir que la plupart des critiques reposaient sur une incompréhension de ses idées. Ils affirment que Popper ne devrait pas être interprété dans le sens où la falsifiabilité est une condition suffisante pour la délimitation de la science. Après avoir abandonné le concept de falsifiabilité, la question de la méthode de démarcation entre science et pseudoscience a été : choisir la théorie la plus probable à des fins pédagogiques, la théorie la plus corroborée pa…Read more
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762In quantum field theory, the main obstacle is the occurrence of the untreatable infinities in the interactions of the particles due to the possibility of arbitrary distances between the point particles. Strings, as extended objects, provide a better framework, which allows finite calculations. String theory is part of a research program in which point particles in particle physics are replaced by one-dimensional objects called strings. It describes how these strings propagate through space and i…Read more
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516L'ontologie d'entreprise établit une distinction claire entre le niveau de données, le niveau d'information et le niveau essentiel des transactions blockchain et des contrats intelligents. La méthodologie OntoClean analyse des ontologies basées sur des propriétés formelles, indépendantes des domaines (méta-propriétés), constituant la première tentative de formalisation des concepts d'analyse ontologique pour des systèmes informatiques. Les notions sont extraites de l'ontologie philosophique. D…Read more
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4346Fizica simplificatăMultiMedia Publishing. 2014.Ediţia a doua (revăzută şi îmbunătăţită) O introducere în teoriile şi conceptele, forţele fundamentale şi particule, metode şi tabele utilizate în fizică, subdomenii şi domenii ştiinţifice înrudite, cu accent pe înţelegerea fenomenelor fizice. Fizica clasică se ocupă, în general, cu materia și energia la scară normală de observație, în timp ce o mare parte a fizicii moderne se ocupă de comportamentul materiei și energiei în condiții extreme sau pe o scară foarte mare sau foarte mică. De exempl…Read more
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690In the interpretation of canonical quantum gravity (CQG), gravity appears as a geometric pseudoforce, is reduced to spacetime geometry and becomes a simple effect of spacetime curvature. The scale at which quantum gravitational effects occur is determined by the different physical constants of fundamental physics: h, c and G, which characterize quantum, relativistic and gravitational phenomena. By combining these constants, we obtain the Planck constants at which the effects of quantum gravity m…Read more
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511Solaris présente un excellent exemple de la façon dont les espaces hétérotopiques peuvent exister en termes cinématiques. Le film de Tarkovsky explore la manière dont les expériences acquises dans l’espace hétérotopique offrent à l’individu la possibilité d’inverser la vision panoramique et comment ces expériences peuvent enfin nous montrer comment nous pouvons recouvrer ou restaurer notre existence en tant que sujets individuels. À travers les expériences des personnages du film, nous sommes in…Read more
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532For the attempt to create a gravitational quantum theory, there are several research programs, some of which became obsolete over time due to the higher heuristic power of other programs. The primordial test of any quantum theory of gravity is the reproduction of the successes of general relativity. This involves reconstructing the local geometry from the non-local observables. In addition, quantum gravity should probabilistically predict the large-scale topology of the Universe, which may soon …Read more
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536Tant qu'un programme de recherche en herbe peut être reconstitué de manière rationnelle en tant que problème progressif, il doit être protégé pendant un certain temps d'un rival puissant existant. Ces considérations, dans leur ensemble, soulignent l’importance de la tolérance méthodologique. Même les fameuses « expériences cruciales » n'auront aucune force pour renverser un programme de recherche. Dans le cadre d'un programme de recherche, des « expériences cruciales mineures » entre versions ul…Read more
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771Quantum gravity has required the consideration of fundamental epistemological questions, which can be identified in philosophy with the mind-body problem and the problem of free will. These questions influenced the epistemology of quantum mechanics in the form of von Neumann's "psycho-physical parallelism" and the subsequent analysis of the thesis by Wigner that "the collapse of the wave packet" occurs in the mind of the "observer". Quantum gravity in cosmology involves the problem of the experi…Read more
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1508Traducere şi traducătoriMultiMedia Publishing. 2014.Include Ghidul Comisiei Europene pentru traducătorii din Uniunea Europeană Despre traducere şi traducători, teorii ale traducerilor, traducerea asistată pe calculator, şi software utilizat în traduceri. Include Ghidul Comisiei Europene pentru traducătorii din Uniunea Europeană şi legislaţia specifică traducerilor şi traducătorilor. Fidelitatea (sau loialitatea) şi transparenţa, idealurile duale în traducere, sunt de multe ori în conflict. Problema fidelităţii versus transparenţă a fost formula…Read more
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437Un processus de collecte du renseignement commence lorsqu'un utilisateur introduit une requête dans le système. Plusieurs objets peuvent être associés au résultat d'une requête, avec différents degrés de pertinence. La plupart des systèmes estiment une valeur numérique indiquant dans quelle mesure chaque objet correspond à la requête, et classent les objets en fonction de cette valeur. De nombreuses recherches se sont concentrées sur les pratiques de recherche du renseignement: un examen approfo…Read more
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509Over time, the general theory of relativity has accumulated several anomalies and discrepancies, indicating the need for a better theory about gravity or other approaches. The ad-hoc hypotheses introduced in general relativity to explain gravitational singularities based on energy conditions are not very efficient. More detailed assumptions on the content of the subject are needed. Many scientists and philosophers have come to the conclusion that singularities must be associated with reaching th…Read more
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694The current cosmological models are built based on general relativity. The solutions of the specific equations, Friedmann-Lemaître-Robertson-Walker, allow to model the evolution of the universe starting from the Big Bang. Some of the parameters of the universe have been established by observations. Based on these, and other observational data, the models can be tested. Predictions include the initial abundance of chemical elements formed in a period of nucleosynthesis during the Big Bang period,…Read more
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677La falsifiabilité de Popper a été critiquée à la fois pour avoir exclu la science légitime et pour avoir accordé un statut scientifique aux pseudo-sciences. Selon Larry Laudan, « cela a la conséquence fâcheuse de considérer comme « scientifique » toute demande faisant de fausses allégations de manière concluante ». Certains reprochent à Popper en disant que sa théorie ne constitue pas une alternative légitime aux propositions inductives qu’il critique. Jeffrey soutient que le bayésianisme, qui i…Read more
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519When the density of the body becomes large enough, general relativity predicts the formation of a black hole. The neutron stars of about 1.4 solar masses and the black holes are the final stage for the evolution of the massive stars. Usually a black hole in a galaxy has played an important role in its formation and related cosmic structures. Such bodies provide an efficient mechanism for the emission of electromagnetic radiation and the formation of microquasars. Accretion can lead to relativist…Read more
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1765Pseudoştiinţă? Dincolo de noi...MultiMedia Publishing. 2015.Întrebarea de bază este, ce este o pseudoştiinţă? Una din cele mai disputate delimitări ale ştiinţei. Mulţi savanţi de renume mondial, unanim recunoscuţi (ca de ex. Charles Darwin) au cochetat de-a lungul timpului cu diverse aspecte ale pseudoştiinţei considerându-le, cu bună credinţă, drept ştiinţă. Şi multe domenii ale pseudoştiinţei actuale au fost, la vremea lor, considerate drept domenii onorabile ale ştiinţei. Chiar şi în prezent, practicanţii pseudoştiinţelor nu recunosc valabilitatea eti…Read more
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571Ricoeur a souligné l’importance de l’idée d’une identité narrative. L'argument de Ricoeur concernant l'individualisation se poursuit par une succession d'étapes. Il part de la philosophie du langage et du problème de l'identification de la référence aux personnes en tant qu'individus eux-mêmes, pas seulement aux choses. Cela amène à considérer le sujet parlant comme un agent, en passant par la sémantique de l'action que Ricoeur avait apprise de la philosophie analytique. Vient ensuite l'idée que…Read more
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729Dicke and Schiff established a framework for testing general relativity, including through null experiments and using the physics of space exploration, electronics and condensed matter, such as the Pound-Rebka experiment and laser interferometry. The gravitational lens tests and the temporal delay of light are highlighted by parameter γ of the PPN formalism, equal to 1 for general relativity and with different values in other theories. The BepiColombo mission aims to test the general theory of r…Read more
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1001Easter CelebrationMultiMedia Publishing. 2015.Easter is the most important solemnity (just before Christmas) of the Church. It is the first of the five cardinal feasts of the Catholic liturgical year. Easter commemorates the resurrection of Jesus Christ laid down by the Bible, the third day after his passion. The solemnity begins on Easter Sunday, which for Catholics mark the end of fasting of Lent, and lasts for eight days (Easter week, or week or radiant, or week of eight Sundays). Many customs dating back to ancient times designed to ac…Read more
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602Le film de Tarkovsky est un « drame de douleur et de récupération partielle » axé sur la psychologie de l'équipe de la station Solaris. Tarkovsky voulait aborder plus profond émotionnellement et intellectuellement le genre scientifique-fantastique, considéré par lui comme superficiel. Il traite un phénomène central de l'analyse psycho-critique de la perception humaine de Klaus Holzkamp : les conditions de la perception du monde humain sont significatives pour l'homme. Dans la perception, les êtr…Read more
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1405Paşti (Paşte) - Cea mai importantă sărbătoare creştinăMultiMedia Publishing. 2015.Paştele este cea mai importantă sărbătoare religioasă din anul liturgic creştin. Creştinii cred că Iisus a fost înviat după trei zile de la crucificarea sa. Multe denominaţii creştine celebrează învierea sa în Ziua de Paşti sau Duminica Paştelui (denumită şi Ziua Învierii sau Duminica Învierii), la două zile după Sfânta Vineri. Orice altă sărbătoare religioasă din calendarul ortodox, inclusiv Crăciunul, este mai puţin importantă faţă de celebrarea Învierii lui Iisus Hristos. Acest lucru se refle…Read more
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604Albert Einstein proposed three tests of general relativity, later named the classic tests of general relativity, in 1916: the precession of the perihelion of Mercury's orbit, sun light deflection, and the gravitational redshift of the light. For gravitational testing, the indirect effects of gravity are always used, usually particles that are influenced by gravity. In the presence of gravity, the particles move along curved geodesic lines. The sources of gravity that cause the curvature of space…Read more
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5230Moartea - Aspecte psihologice, ştiinţifice, religioase, culturale şi filozoficeMultiMedia Publishing. 2015.Despre moarte, durere, doliu, viaţa de după moarte şi nemurire. De ce trebuie să murim ca oameni pentru a trăi ca specie. "Nimeni nu vrea să moară. Chiar și cei care doresc să ajungă în cer, nu ar vrea să moară pentru a ajunge acolo. Și totuși, moartea este destinația pe care o împărtășim cu toții. Nimeni nu a scăpat vreodată. Și aşa şi trebuie, pentru că Moartea este foarte probabil cea mai bună invenție a Vieții. Este agentul de schimbare a Vieţii. Ea şterge pe cele vechi pentru a face loc ce…Read more
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497Imre Lakatos a proposé une modification du critère de Popper, qu'il a qualifié de « falsification sophistiquée (méthodologique) ». De ce point de vue, le critère de délimitation ne devrait pas s'appliquer à une hypothèse ou à une théorie isolée, mais plutôt à l'ensemble d'un programme de recherche. La falsification méthodologique sophistiquée change le problème du mode d’évaluation théorique en problème de l’évaluation des séries théoriques. DOI: 10.13140/RG.2.2.25555.73761
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506In a previous article, Philosophy of Blockchain Technology - Ontologies, I talked about applying Paul Ricœur's narrative theory in developing an ontology of blockchain technology. In this article I intend to highlight the idea of an analogy between blockchain technology and the causal theories of reference. Such a theory can be interpreted as a result of syntactic notation in a reference field, based on the narrative theory developed by Paul Ricœur in Time and Narrative. DOI: 10.13140/RG.2.2.2…Read more
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1114How to Translate - English Translation Guide in European UnionMultiMedia Publishing. 2015.A guide for translators, about the translation theory, the translation process, interpreting, subtitling, internationalization and localization and computer-assisted translation. A special section is dedicated to the translator's education and associations. The guide include, as annexes, several independent adaptations of the corresponding European Commission works, freely available via the EU Bookshop as PDF and via SetThings as EPUB, MOBI (Kindle) and PDF. For a “smart”, sensible translation…Read more
Nicolae Sfetcu
Romanian Academy
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Romanian AcademyOther (Part-time)
București, București, Romania
Areas of Specialization
| Philosophy of Physics, Misc |
Areas of Interest
| Philosophy of Physics, Misc |