Degrees of freedom and motor planning in purposive movement

This paper presents empirical evidence suggesting that healthy humans can perform a two degree of freedom visuo-motor pursuit tracking task with the same response time delay as a one degree of freedom task. In contrast, the time delay of the response is influenced markedly by the nature of the motor synergy required to produce it. We suggest a conceptual account of this evidence based on adaptive model theory, which combines theories of intermittency from psychology and adaptive optimal control from engineering. The intermittent response planning stage has a fixed period. It possesses multiple optimal trajectory generators such that multiple degrees of freedom can be planned concurrently, without requiring an increase in the planning period. In tasks which require unfamiliar motor synergies, or are deemed to be incompatible, internal adaptive models representing movement dynamics are inaccurate. This means that the actual response which is produced will deviate from the one which is planned. For a given target-response discrepancy, corrective response trajectories of longer duration are planned, consistent with the principle of speed-accuracy trade-off. Compared to familiar or compatible tasks, this results in a longer response time delay and reduced accuracy. From the standpoint of the intermittency approach, the findings of this study help make possible a more integral and predictive account of purposive action. (c) 2005 Elsevier B.V. All rights reserved.

Predestination and freedom in Milton's 'Paradise lost'

John Milton's epic poem Paradise Lost (1667) offers a highly creative seventeenth-century reconstruction of the doctrine of predestination, a reconstruction which both anticipates modern theological developments and sheds important light on the history of predestinarian thought. Moving beyond the framework of post-Reformation controversies, the poem emphasises both the freedom and the universality of electing grace, and the eternally decisive role of human freedom in salvation. The poem erases the distinction between an eternal election of some human beings and an eternal rejection of others, portraying reprobation instead as the temporal self-condemnation of those who wilfully reject their own election and so exclude themselves from salvation. While election is grounded in the gracious will of God, reprobation is thus grounded in the fluid sphere of human decision. Highlighting this sphere of human decision, the poem depicts the freedom of human beings to actualise the future as itself the object of divine predestination. While presenting its own unique vision of predestination, Paradise Lost thus moves towards the influential and distinctively modern formulations of later thinkers like Schleiermacher and Barth.

A TEOLOGIA DO COMPROMISSO NO PENSAMENTO DE ELLEN G. WHITE: UMA PERSPECTIVA DA LIBERDADE CRISTÃ

Este trabalho de pesquisa faz uma abordagem não exaustiva acerca da temática da liberdade na perspectiva da teóloga cristã protestante norte-americana Ellen G. White, partindo do estudo de sua pessoa e dos contextos geopolítico e sociocultural nos quais viveu, avançando ainda para uma noção de sua produção literária e a importância da sistematização de seu pensamento para uma compreensão de sua tratativa quanto ao tema proposto. Toma-se como critério de análise a organização de seu pensamento em três linhas de raciocínios teológicos chamadas, respectivamente, Teologia Integral, Teologia do Compromisso e Teologia do Discipulado, as quais, combinadas, constituem sua perspectiva teológica de liberdade. Mostra-se que a primeira linha justifica as razões da liberdade, a segunda explica como ela ocorre no ser humano, e a terceira propõe o roteiro de sua exteriorização positiva para a humanidade. Segue-se, então, examinando os conceitos, fundamentos, características e desdobramentos temáticos de cada um dos elementos constituintes dos roteiros teológicos mencionados, evidenciando os teólogos que mais influenciaram a autora e apontando as aproximações de sua perspectiva à de teólogos que lhe são posteriores. Em conclusão, propõe-se, na perspectiva da autora, liberdade como expressão significante de uma vida comprometida com o servir em amor de forma piedosa. Liberdade é, assim, uma condição experimentada por aqueles que creem e se submetem a Deus, experimentando uma vida de permanente amor e serviço abnegado ao próximo, realidade testemunhada na prática da genuína piedade cristã. E, por último, desafia-se o leitor à urgente percepção, crítica e reação proativa equilibrada em relação às ideologias humanistas de matriz antropocêntrica exclusiva, mostrando-as como principais fundamentos dos equívocos (pós)modernos de liberdade. Diante dessa realidade, propõe-se a reumanização da ideia de liberdade numa perspectiva teocêntrica por meio do retorno a Deus e à Sua Palavra, empreendimento para o qual a proposta de Ellen G. White se mostra um potencial Teo-humanizador de considerável valor, capaz de possibilitar inclusive o desenvolvimento harmônico da integralidade humana.

Enforceability of leasehold covenants and the landlord and tenant (Covenants) Act 1995

Describes the impact of the English Landlord and Tenant (Covenants) Act 1995, reforming liability in the context of new leases, extending the 'touching and concerning' requirement so all covenants 'run with the land' (with some exceptions), and abolishing the enduring liability of the original tenants and landlords. Explains that landlords will have more freedom to prescribe in advance the circumstances in which they consent to an assignment, referring also to changes in default notices requiring an 'early warning' to defaulters, and overriding leases, with a remedy for former tenants. Expects future leases to be shorter as landlords realize they cannot hold original tenants liable any more.

Does ICT promote democracy and economic freedom in Middle East?

This study investigates the impact of information and communication technology (ICT) expansion on economic and social freedom in the Middle East (Bahrain, Iran, Jordan, Kuwait, Lebanon, Oman, Qatar, Saudi Arabia, Syria and United Arab Emirates) for the period of 1996 to 2005. This study is unique as it analyzes the effect of institutional resistance (governments’ restrictions) on ICT development, economic freedom and democracy. The results show that institutional resistance poses a significant negative effect on ICT development and democracy. Results also show that ICT expansion in Middle East has not only been effective in bridging the Digital Divide, but that it had a positive impact on promoting civil liberties and economic freedom in a region that is vulnerable to political, social, and global conflicts.

The impact of information and communication technology (ICT), education and regulation on economic freedom in Islamic Middle Eastern countries

Our study investigated the impact of ICT expansion on economic freedom in the Middle East (Bahrain, Iran, Jordan, Kuwait, Lebanon, Oman, Qatar, Saudi Arabia, Syria, United Arab Emirates, and Yemen). Our empirical analysis used archival data from 1995 to 2005; it showed that ICT expansion in the Middle East has been effective both in bridging the digital divide and also in promoting economic freedom in a region that was vulnerable to political, social, and global conflict. However, differences between countries, such as the educational attainment of their citizens and institutional resistance to technology acceptance, both enhanced and restricted the relationship between ICT and economic freedom.