Prediction of coal ash fusion temperatures with the F*A*C*T thermodynamic computer package

This paper outlines research on the processes taking place within the coal mineral matter at high temperatures and development of the relationship between ash fusion temperatures (AFT) and phase equilibria of the coal ash slags. A new thermodynamic database for the Al-Ca-Fe-O-Si system developed by the author was used in conjunction with the thermodynamic computer package F*A*C*T for these purposes. In addition, high temperature experimental studies were undertaken that involved heat treatment and quenching of the ash cones followed by the analyses using different techniques. The study provided new information on the processes taking place during AFT test and demonstrated the validity of the AFTs predictions with F*A*C*T. Examples of practical applications of the AFT prediction method are given in the paper. The results of this study are important not only for the AFT predictions, but also in general for the application of phase equilibrium science to the characterisation of the coal mineral matter interactions at high temperature. (C) 2002 Elsevier Science Ltd. All rights reserved.

The expression of conflict in computer-mediated and face-to-face groups

This study integrated the research streams of computer-mediated communication (CMC) and group conflict by comparing the expression of different types of conflict in CMC groups and face-to face (FTF) groups over time. The main aim of the study was to compare the cues-filtered-out approach against the social information processing theory A laboratory study was conducted with 39 groups (19 CMC and 20 FTF) in which members were required to work together over three sessions. The frequencies of task, process, and relationship conflict were analyzed. Findings supported the social information processing theory. There was more process and relationship conflict in CMC groups compared to FTF groups on Day 1. However, this difference disappeared on Days 2 and 3. There was no difference between CMC and FTF groups in the amount of task conflict expressed on any day.

Principles versus artifacts in computer science curriculum design

Computer Science is a subject which has difficulty in marketing itself. Further, pinning down a standard curriculum is difficult-there are many preferences which are hard to accommodate. This paper argues the case that part of the problem is the fact that, unlike more established disciplines, the subject does not clearly distinguish the study of principles from the study of artifacts. This point was raised in Curriculum 2001 discussions, and debate needs to start in good time for the next curriculum standard. This paper provides a starting point for debate, by outlining a process by which principles and artifacts may be separated, and presents a sample curriculum to illustrate the possibilities. This sample curriculum has some positive points, though these positive points are incidental to the need to start debating the issue. Other models, with a less rigorous ordering of principles before artifacts, would still gain from making it clearer whether a specific concept was fundamental, or a property of a specific technology. (C) 2003 Elsevier Ltd. All rights reserved.

Assessing childrens competence in computer interactions: Preliminary reliability and validity of the test of mouse proficiency

The Test of Mouse Proficiency (TOMP) was developed to assist occupational therapists and education professionals assess computer mouse competency skills in children from preschool to upper primary (elementary) school age. The preliminary reliability and validity of TOMP are reported in this paper. Methods used to examine the internal consistency, test-retest reliability, and criterion- and construct-related validity of the test are elaborated. In the continuing process of test refinement, these preliminary studies support to varying degrees the reliability and validity of TOMP. Recommendations for further validation of the assessment are discussed along with indications for potential clinical application.

An evaluation of active lecturing in a computer networks course

The article describes an attempt to improve student learning outcomes in a computer networks course by making lectures more active learning experiences. Quick quizzes, group and individual exercises, the review of student questions, as well as multiple breaks, were incorporated into the weekly three-hour lectures. Student responses to the modified lectures was overwhelmingly positive: over 85% of respondents agreed that the lectures aided understanding, with large majorities of the respondents finding the individual activities useful to their learning. Although student examination performance improved over the previous year, performance on an examination question that was designed to examine deep understanding remained unchanged.

Os Estados Unidos e a ameaça do crime organizado transnacional nos anos 1990

O estudo analisa a inserção do crime organizado transnacional na agenda de segurança dos Estados Unidos e sua qualificação como uma das principais ameaças contemporâneas à ordem internacional pós Guerra Fria. Os resultados apontam a importância dos dois mandatos de Clinton (1993-2001) neste processo, cuja maior expressão é a Presidential Decision Directive 42, ao viabilizar, inclusive, a reorganização das estruturas policiais, militares e de Inteligência do país para combater esta ameaça. Conclui-se que a década de 1990 é o momento determinante da identificação norte-americana desta criminalidade como uma ameaça inédita, estrangeira e de grandes proporções.

Molecular dynamics computer simulation of scratch resistance testing of polymers: visualization

Experimental scratch resistance testing provides two numbers: the penetration depth Rp and the healing depth Rh. In molecular dynamics computer simulations, we create a material consisting of N statistical chain segments by polymerization; a reinforcing phase can be included. Then we simulate the movement of an indenter and response of the segments during X time steps. Each segment at each time step has three Cartesian coordinates of position and three of momentum. We describe methods of visualization of results based on a record of 6NX coordinates. We obtain a continuous dependence on time t of positions of each of the segments on the path of the indenter. Scratch resistance at a given location can be connected to spatial structures of individual polymeric chains.

Criminal Liability of Organizations, Corporations, Legal Persons, and Similar Entities on Law of Portuguese Cybercrime: A Brief Discussion on the Issue of Crimes of “False Information,” the “Damage on Other Programs or Computer Data,” the “Computer-Software Sabotage,” the “Illegitimate Access,” the “Unlawful Interception,” and “Illegitimate Reproduction of the Protected Program”

Abstract: in Portugal, and in much of the legal systems of Europe, «legal persons» are likely to be criminally responsibilities also for cybercrimes. Like for example the following crimes: «false information»; «damage on other programs or computer data»; «computer-software sabotage»; «illegitimate access»; «unlawful interception» and «illegitimate reproduction of protected program». However, in Portugal, have many exceptions. Exceptions to the «question of criminal liability» of «legal persons». Some «legal persons» can not be blamed for cybercrime. The legislature did not leave! These «legal persons» are v.g. the following («public entities»): legal persons under public law, which include the public business entities; entities utilities, regardless of ownership; or other legal persons exercising public powers. In other words, and again as an example, a Portuguese public university or a private concessionaire of a public service in Portugal, can not commit (in Portugal) any one of cybercrime pointed. Fair? Unfair. All laws should provide that all legal persons can commit cybercrimes. PS: resumo do artigo em inglês.

«A Responsabilidade das Empresas pelo Crime de Corrupção», «Direito Penal § Fundamentos Dogmáticos e Político-Criminais»

Resumo: 1- Introdução: algumas notícias da comunicação social; 2 – O designado «Conselho de Prevenção de Corrupção»; 3 – Procuradoria-Geral da República (P.G.R.) e o Departamento Central de Investigação e Acção Penal (D.I.A.P.); 4 – Alguns sítios com relevo; 5 – Alguns dos problemas que podem ser colocados em relação à Responsabilidade das Empresas pelo Crime de Corrupção; 5.1 – Âmbito dos problemas a serem falados; 6 – Qual a noção de «empresas que vamos utilizar»?; 6.1 – A noção de «empresa» em sentido geral objectivo e penal; 7 – Mas que tipo de crimes de corrupção vamos falar?; 8 – O art. 11º do Código Penal e os crimes de corrupção no contexto do ordenamento jurídico português; 8.1 – No contexto do art. 11º do Código Penal, o que significa «em nome da pessoa colectiva»?; 8.2 – No contexto do art. 11º do Código Penal, o que significa «no interesse da pessoa colectiva»?; 8.2.1 – No contexto do art. 11º do Código Penal, o que significa «quando não há interesse colectivo»?; 9 – E haverá diferenças, por exemplo, entre o modo de funcionamento técnico-jurídico do art. 11º do Código Penal e o art. 3º do Regime das Infracções Anti-Económicas e Contra a Saúde Pública (R.I.A.E.C.S.P.)?; 10 – E como é que a Jurisprudência portuguesa, a que tivemos acesso - dado não haver ainda fartura de decisões neste campo -, estabelece o nexo de imputação de responsabilidade penal a uma pessoa colectiva e/ou organização?; 10.1 – Uma primeira pré-conclusão dentro do objectivo que pretendemos demonstrar na totalidade deste trabalho; 11 – Uma segunda pré-conclusão: será que as diferenças acima assinaladas, por exemplo, entre o modo de funcionamento técnico-jurídico do art. 11º do Código Penal e o art. 3º do Regime das Infracções Anti-Económicas e Contra a Saúde Pública (R.I.A.E.C.S.P.), são as únicas? Veja-se o caso, v.g., do art. 7º do Regime Geral das Infracções Tributárias (R.G.I.T.); 12 – Em face das duas pré-conclusões anteriores, faça-se aqui, neste breve ensaio, uma primeira grande conclusão; 13 – Uma (primeira) hipótese de solução; 14 – Que tipo de «empresa» podemos enquadrar no art. 11º do Código Penal?; 14.1 – De acordo com o referido anteriormente, podemos dizer que todas as «empresas» podem praticar os crimes previstos e punidos no Código Penal português?; 14.2 – De acordo com o referido antes, quais são as «empresas» que não podem praticar os crimes de corrupção que estão previstos e punidos no Código Penal português?; 14.3 – Uma outra pré-conclusão: 14.4 – Um esboço de um dos possíveis problemas; 14.4.1 – Mas, afinal, o que são Entidades Públicas Empresariais (E.P.E.)?; 14.5 – Outra hipótese de esboço de um outro dos possíveis problemas que aqui podemos encontrar; 14.6 – Nova pré-conclusão; 14.7 – Uma outra importante pergunta a fazer e a responder desde já; 14.7.1 - Alarguemos, pois, um pouco a nossa investigação para além do Código Penal português; 14.7.2 – O problema da responsabilidade penal das organizações e/ou «pessoas colectivas», rectius, neste breve ensaio, empresas, pela prática de crimes de corrupção previstos e punidos na mencionada Lei n.º 20/2008, de 21 de Abril («Responsabilidade penal por crimes de corrupção no comércio internacional e na actividade privada»); 14.7.3 – Mais algumas pré-conclusões; 15 - Em face das duas pré-conclusões anteriores, faça-se aqui, neste breve ensaio, uma segunda grande conclusão; 16 - O que também apresenta outras implicações como por exemplo na aplicação do crime de «branqueamento» quando nos fala em «corrupção» como «crime primário»; 17 – Outras interrogações; 18 – Conclusão final, mas não última, como nenhuma o pode ser em ciência; 19 – Hipótese de solução. § Abstract: 1 - Introduction: some news media; 2 - The so-called "Council for the Prevention of Corruption”, 3 – “Attorney General's Office” (PGR) and the Central Bureau of Investigation and Penal Action (DIAP) 4 - Some sites with relief , 5 - Some of the problems that can be placed in relation to the Corporate Responsibility of the Crime of Corruption; 5.1 - Scope of issues to be spoken, 6 - What is the concept of "companies that we will use"?; 6.1 - The term “business” in a general purpose and criminal matters; 7 - What kind of crimes of corruption we talking about?; 8 - Art. 11 of the Penal Code and the crimes of corruption in the context of the Portuguese legal system; 8.1 - In the context of art. 11 of the Penal Code, which means "in the name of the legal person"?; 8.2 - In the context of art. 11 of the Penal Code, which means “in the interests of the legal person"?; 8.2.1 - In the context of art. 11 of the Penal Code, which means "where there is no collective interest"?; 9 - There will be differences, for example, between the operating mode of the Art. 11 of the Criminal Code and Art. 3 of the Legal Infractions Anti-Economic and Against Public Health (RIAECSP)?; 10 - And how does the case law of Portugal, we had access - as there still plenty of decisions in this field - makes a connection of allocating criminal liability to a legal person and / or organization?; 10.1 - A first pre-completion within the objective that we intend to demonstrate in all of this work; 11 - A second pre-conclusion: that the differences will be noted above, for example, between operating mode of the Art. 11 of the Criminal Code and Art. 3 of the Rules of the Offences Against Anti-Economics and Public Health (RIAECSP) are the only ones? Take the case v.g. of art. 7 of the Legal Framework of Tax Offences (RGIT) 12 - In view of the two pre-earlier conclusions, do it here, in this brief essay, a first major conclusion; 13 - A (first) chance for a solution, 14 - What kind “undertaking” we can frame the art. 11 of the Penal Code?; 14.1 - According to the above, we can say that all "companies" can practice the crimes defined and punished in the Portuguese Penal Code?; 14.2 - According to the mentioned before, what are the "business" who cannot practice corruption crimes that are planned and punished the Portuguese Penal Code?; 14.3 - Another pre-completion: 14.4 - A sketch of one of the possible problems; 14.4.1 - But after all the entities that are Public Enterprise (EPE)?; 14.5 - Another chance to draft another one of the possible problems that can be found here; 14.6 - New pre-completion; 14.7 - Another important question to ask and answer now; 14.7.1 - Let us expand, then, a little beyond our investigation of the Portuguese Penal Code; 14.7.2 - The problem of criminal liability of organizations and / or "legal persons", rectius, this brief essay, companies, for crimes of corruption provided for and punished mentioned in Law No. 20/2008 of 21 April ("Criminal liability for crimes of corruption in international trade and private activities"); 14.7.3 - Some more pre-conclusions; 15 - In view of the two pre-earlier conclusions, let it be here in this brief essay, a second major conclusion, 16 - Who also has other implications such as the application of the crime of "money laundering" when we talk about “corruption” as “primary crime”, 17 - Other questions; 18 - Bottom line, but not last, as the can be no science; 19 - Hypothesis solution. Abstract como no livro.

Lições de "Responsabilidade Penal das Pessoas Colectivas e o caso do abuso de mercado", Mestrado em Crime, Diferença e Desigualdade, 2013/2014

A responsabilidade penal das pessoas colectivas - rectius empresas - é um problema complexo do Direito penal económico e financeiro. O abuso de mercado é um problema que ainda não está resolvido, nomeadamente porque em Portugal não há aqui responsabilidade penal das empresas. Assim, o abuso de informação e a manipulação do mercado continuam impunes de um certo ponto de vista quando aos autores.

A Methodology for GUI Layer Redefinition Through Virtualization and Computer Vision

Nowadays despite improvements in usability and intuitiveness users have to adapt to the proposed systems to satisfy their needs. For instance, they must learn how to achieve tasks, how to interact with the system, and fulfill system's specifications. This paper proposes an approach to improve this situation enabling graphical user interface redefinition through virtualization and computer vision with the aim of increasing the system's usability. To achieve this goal the approach is based on enriched task models, virtualization and picture-driven computing.