On-line analysis of froth surface in coal and mineral flotation using JKFrothCam

The personal computer revolution has resulted in the widespread availability of low-cost image analysis hardware. At the same time, new graphic file formats have made it possible to handle and display images at resolutions beyond the capability of the human eye. Consequently, there has been a significant research effort in recent years aimed at making use of these hardware and software technologies for flotation plant monitoring. Computer-based vision technology is now moving out of the research laboratory and into the plant to become a useful means of monitoring and controlling flotation performance at the cell level. This paper discusses the metallurgical parameters that influence surface froth appearance and examines the progress that has been made in image analysis of flotation froths. The texture spectrum and pixel tracing techniques developed at the Julius Kruttschnitt Mineral Research Centre are described in detail. The commercial implementation, JKFrothCam, is one of a number of froth image analysis systems now reaching maturity. In plants where it is installed, JKFrothCam has shown a number of performance benefits. Flotation runs more consistently, meeting product specifications while maintaining high recoveries. The system has also shown secondary benefits in that reagent costs have been significantly reduced as a result of improved flotation control. (C) 2002 Elsevier Science B.V. All rights reserved.

Geography's emerging cross-disciplinary links: Process, causes, outcomes and challenges

In Australian universities the discipline of Geography has been the pace-setter in forging cross-disciplinary links to create multidisciplinary departments and schools, well ahead of other disciplines in humanities, social sciences and sciences, and also to a greater extent than in comparable overseas university systems. Details on all cross-disciplinary links and on immediate outcomes have been obtained by surveys of all heads of departments/schools with undergraduate Geography programs. These programs have traced their own distinctive trajectories, with ramifying links to cognate fields of enquiry, achieved through mergers, transfers, internal initiatives and, more recently, faculty-wide restructuring to create supradisciplinary schools. Geography's `exceptionalism' has proved short-lived. Disciplinary flux is now extending more widely within Australian universities, driven by a variety of internal and external forces, including: intellectual questioning and new ways of constituting knowledge; technological change and the information revolution; the growth of instrumentalism and credentialism, and managerialism and entre-preneurial imperatives; reinforced by a powerful budgetary squeeze. Geographers are proving highly adaptive in pursuit of cross-disciplinary connections, offering analytical tools and selected disciplinary insights useful to non-geographers. However, this may be at cost to undergraduate programs focussing on Geography's intellectual core. Whereas formerly Geography had high reproductive capacity but low instrumental value it may now be in a phase of enhanced utility but perilously low reproductive capacity.

O administrador p??blico tipo delta para o s??culo 21

O artigo estuda um aspecto da reforma do Estado que, segundo o autor, tem sido sistematicamente negligenciado pelas atuais propostas que focalizam o modelo da administra????o gerencial. Trata-se das fun????es vitais do governo de tomar decis??es cr??ticas e adotar pol??ticas diante das mudan??as provocadas pela revolu????o global. Segundo Dror, as tarefas de alto comando (high-order tasks) de definir trajet??rias e as novas formas de governan??a exigem um ajuste significativo do governo central. Este ajuste refere-se, principalmente, ?? concep????o e ao desenvolvimento de um novo padr??o de funcion??rios do primeiro escal??o p??blico, o qual contribuiria com conhecimento e perspectivas para enfrentar as tarefas de alto comando. O autor estabelece uma tipologia para caraterizar a evolu????o do perfil do servi??o p??blico, marcando suas fases hist??ricas: a) tipo alpha (status atribu??do, fus??o de pap??is pol??ticos e administrativos); b) tipo beta (compra de cargos governamentais) e c) tipo gamma (quase profissionalismo). O novo funcion??rio s??nior, do tipo delta, se concentraria nas quest??es de ordem estrat??gica, deixando as fun????es gerenciais para servidores do tipo gamma e para os servi??os t??cnicos. Ap??s uma breve an??lise, Dror conclui que o funcionalismo p??blico de primeiro escal??o, na maioria dos pa??ses (com exce????o de alguns pa??ses do Sudeste Asi??tico), encontra-se obsoleto, com base profissional inadequada e capacidade insuficiente para lidar com escolhas cr??ticas.

Burocracia e a revolu????o gerencial: a persist??ncia da dicotomia entre pol??tica e administra????o

Este ensaio trata da integra????o entre pol??tica e administra????o no contexto da chamada revolu????o gerencial. O texto est?? estruturado em cinco segmentos. Os dois primeiros delineiam uma interpreta????o weberiana do problema da burocracia: a dicotomiza????o entre pol??tica e administra????o, tanto no n??vel te??rico da governan??a contempor??nea, onde prop??e-se um quadro de refer??ncia anal??tica ?? integra????o entre pol??tica e administra????o, quanto no contexto da moderniza????o da administra????o p??blica brasileira. O terceiro segmento busca caracterizar os atributos do modelo ideal de administra????o p??blica preconizado pela revolu????o gerencial, a partir da contraposi????o de outros paradigmas reconstitu??dos da literatura: um ortodoxo, um liberal, outro empreendedor. O quarto segmento sustenta que os modelos de administra????o p??blica preconizados pela revolu????o gerencial apresentam o mesmo car??ter dicotomizante entre pol??tica e administra????o t??pica da burocracia. O sexto segmento ensaia algumas reflex??es sobre a validade da revolu????o gerencial, sua contribui????o para a experi??ncia brasileira e sobre o advento de uma revolu????o p??s-gerencial.

Ética calvinista, idealismo e revolução : Carlyle e a crítica da economia vitoriana

O artigo versa sobre a doutrina econômica e social de Thomas Carlyle, célebre autor escocês do século dezenove. Inicialmente, são revistos alguns aspectos essenciais da sociedade e do capitalismo industrial na Inglaterra durante o período. Resgatam-se, a seguir, as influências religiosas e filosóficas do pensamento social de Carlyle. Após, discutem-se sua concepção da história e a versão da Revolução Francesa por ele formulada para, na seqüência, introduzir sua crítica da economia vitoriana. Ao final, avaliam-se os avanços e contradições de sua teoria social.

Lucidez-Embriaguez, movimento e arrebatamento: homens,(Semi)deuses que perambulam e a educação menor num bairro de uma rede municipal

A tese afirma a vida por meio das biopotências que se manifestam em movimentações invisíveis aos olhos acostumados a permitir o ver, o julgar e o falar. Foca o tempo presente, na comunicação em redes, traz em si a potência de reatar a multidão, com a capacidade de sondar possibilidades mostrando o que antes parecia opaco e impossível. Perambular é ligar nas redes quentes de um bairro com/no/do território ao privilegiar o movimento, o processo, sempre caminhando pelas vias e conexões abertas, aposta estética-ética-política nos paradoxos sem superação e não hierarquizados. Toma como método de pesquisa-intervenção elementos de uma cartografia de movimentos e devires, traçando um perambular rizomático em que são problematizados a constituição do problema de pesquisa, que considera a construção do conhecimento diversificada, descentralizada e horizontalizada. Problematiza as práticas discursivas de si em suas relações com a biopolítica, a governabilidade e a biopolítica das populações. O que está(rá) rolando nesse bairro, no que foi chamado de criança, adolescente, escola, compor para que as coisas apareçam, junto com outros que vivem a loucura em duplas e trios. A tese é a possibilidade da existência de uma educação menor na periferia para as populações marginalizadas, muçulmanizadas. Educação menor, da sala de aula, do bairro, do cotidiano de professores, familiares e alunos. Educação que permite revolucionários, na medida em que alguma revolução ainda faz sentido na educação nesses dias. A educação menor constitui-se, assim, num empreendimento de militância, de professores militantes. Plano das afecções em que não há unidades, apenas intensidade. A tese fala do processo, de como reproduzir, ou não, os modos de subjetividade dominante, não se trata de medidas - "menor" ou "pequeno". Nesse sentido, é preciso considerar os efeitos de produção de subjetividade e a incorporação dos fatos à própria vida. A tese analisa movimentos instituintes buscando reconhecê-los em sua natureza contestatória e transgressora e ter conhecimento de como se organiza na escola e muito além dela. Discutindo a produtividade dessa coreografia do perambular, esboçamos movimentos que denominamos: estradas que levam a nada, além muro

25 de Abril para sempre? "Fascismo" nunca mais?

Nem está garantido que o “25 de Abril seja para sempre”. O mais certo é que não esteja. Nem está assegurado, qual verdade ontológica, que não haverá mais “fascismo” ou um outro “Estado Novo de inspiração fascista”, como alguns preferem descrever o período histórico vivido em Portugal entre 1933 (com raízes em 1928 após eleição de Óscar Carmona) e o 25 de Abril de 1974. O mais certo é que surjam novos tipos de “fascismo”. § Abstract: Neither is guaranteed that the "April 25th is forever." Most likely it is not. Neither is assured, what ontological truth, there will be no more "fascism" or another "New State of fascist inspiration," as some prefer to describe the historical period lived in Portugal between 1933 (with roots in 1928 after Óscar Carmona Election) and April 25, 1974. most likely there are new types of "fascism."

25 DE ABRIL e CONSTITUIÇÃO

Revolução do 25 de Abril de 1974 e Constituição. 2/4/1976 é a data de nascimento da Constituição da República Portuguesa. No intermédio vigorou a Constituição salazarista de 1933. § Revolution of April 25, 1974 and the Constitution. 02/04/1976 is the date of birth of the Portuguese Constitution. The intermediate lasted Salazar's Constitution of 1933.

Historical Inevitability

What interests me more here is the so-called Historical Inevitability. It is a concept intimately linked with Human Choice and Freedom. There is a long history of debate around it among the western thinkers. The protestant thinkers, and particularly its Calvinist brand laid much emphasis upon predestination. The modern thinkers, freed from the theological trappings, questioned the Church imposed limitations to the capacity of human reasoning. The progress of science and technologies supported by it through the Industrial Revolution and thereafter seemed to endorse this new self-confidence. However, the miseries brought upon mankind by regional and world wars fuelled by the same technologies have made mankind wary of its faith upon scientific progress. The promises of modernization have left the greater part of mankind without its benefits, and even the rest of mankind is unsure of living in a safe and uncontaminated environment.

Eastwards / westwards: which direction for gender studies in the 21st century?

Eastwards / Westwards: Which Direction for Gender Studies in the XXIst Century? is a collection of essays which focus on themes and methods that characterize current research into gender in Asian countries in general. In this collection, ideas derived from Gender Studies elsewhere in the world have been subjected to scrutiny for their utility in helping to describe and understand regional phenomena. But the concepts of Local and Global – with their discoursive productions – have not functioned as a binary opposition: localism and globalism are mutually constitutive and researchers have interrogated those spaces of interaction between the ‘self’ and the ‘other’, bearing in mind their own embeddedness in social and cultural structures and their own historical memory. Contributors to this collection provided a critical transnational perspective on some of the complex effects of the dynamics of cultural globalization, by exploring the relation between gender and development, language, historiography, education and culture. We have also given attention to the ideological and rhetorical processes through which gender identity is constructed, by comparing textual grids and patterns of expectation. Likewise, we have discussed the role of ethnography, anthropology, historiography, sociology, fiction, popular culture and colonial and post-colonial sources in (re)inventing old/new male/female identities, their conversion into concepts and circulation through time and space. This multicultural and trans-disciplinary selection of essays is totally written in English, fully edited and revised, therefore, it has a good potential for an immediate international circulation. This project may trace new paths and issues for discussion on what concerns the life, practices and narratives by and about women in Asia, as well as elsewhere in the present day global experience. Academic readership: Researchers, scholars, educators, graduate and post-graduate students, doctoral students and general non-fiction readers, with a special interest in Gender Studies, Asia, Colonial and Post-Colonial Literature, Anthropology, Cultural Studies, History, Historiography, Politics, Race, Feminism, Language, Linguistics, Power, Political and Feminist Agendas, Popular Culture, Education, Women’s Writing, Religion, Multiculturalism, Globalisation, Migration. Chapter summary: 1. “Social Gender Stereotypes and their Implication in Hindi”, Anjali Pande, Jawaharlal Nehru University, New Delhi, India. This essay looks at the subtle ways in which gender identities are constructed and reinforced in India through social norms of language use. Language itself becomes a medium for perpetuating gender stereotypes, forcing its speakers to confirm to socially defined gender roles. Using examples from a classroom discussion about a film, this essay will highlight the underlying rigid male-female stereotypes in Indian society with their more obvious expressions in language. For the urban woman in India globalisation meant increased economic equality and exposure to changed lifestyles. On an individual level it also meant redefining gender relations and changing the hierarchy in man-­woman relationships. With the economic independence there is a heightened sense of liberation in all spheres of social life, a confidence to fuzz the rigid boundaries of gender roles. With the new films and media celebrating this liberated woman, who is ready to assert her sexual needs, who is ready to explode those long held notions of morality, one would expect that the changes are not just superficial. But as it soon became obvious in the course of a classroom discussion about relationships and stereotypes related to age, the surface changes can not become part of the common vocabulary, for the obvious reason that there is still a vast gap between the screen image of this new woman and the ground reality. Social considerations define the limits of this assertiveness of women, whereas men are happy to be liberal within the larger frame of social sanctions. The educated urban woman in India speaks in favour of change and the educated urban male supports her, but one just needs to scratch the surface to see the time tested formulae of gender roles firmly in place. The way the urban woman happily balances this emerging promise of independence with her gendered social identity, makes it necessary to rethink some aspects of looking at gender in a gradually changing, traditional society like India. 2. “The Linguistic Dimension of Gender Equality”, Alissa Tolstokorova, Kiev Centre for Gender Information and Education, Ukraine. The subject-matter of this essay is gender justice in language which, as I argue, may be achieved through the development of a gender-related approach to linguistic human rights. The last decades of the 20th century, globally marked by a “gender shift” in attitudes to language policy, gave impetus to the social movement for promoting linguistic gender equality. It was initiated in Western Europe and nowadays is moving eastwards, as ideas of gender democracy progress into developing countries. But, while in western societies gender discrimination through language, or linguistic sexism, was an issue of concern for over three decades, in developing countries efforts to promote gender justice in language are only in their infancy. My argument is that to promote gender justice in language internationally it is necessary to acknowledge the rights of women and men to equal representation of their gender in language and speech and, therefore, raise a question of linguistic rights of the sexes. My understanding is that the adoption of the Universal Declaration of Linguistic Rights in 1996 provided this opportunity to address the problem of gender justice in language as a human rights issue, specifically as a gender dimension of linguistic human rights. 3. “The Rebirth of an Old Language: Issues of Gender Equality in Kazakhstan”, Maria Helena Guimarães, Polytechnic Institute of Porto, Portugal. The existing language situation in Kazakhstan, while peaceful, is not without some tension. We propose to analyze here some questions we consider relevant in the frame of cultural globalization and gender equality, such as: free from Russian imperialism, could Kazakhstan become an easy prey of Turkey’s “imperialist dream”? Could these traditionally Muslim people be soon facing the end of religious tolerance and gender equality, becoming this new old language an easy instrument for the infiltration in the country of fundamentalism (it has already crossed the boarders of Uzbekistan), leading to a gradual deterioration of its rich multicultural relations? The present structure of the language is still very fragile: there are three main dialects and many academics defend the re-introduction of the Latin alphabet, thus enlarging the possibility of cultural “contamination” by making the transmission of fundamentalist ideas still easier through neighbour countries like Azerbaijan, Uzbekistan and Turkmenistan (their languages belong to the same sub-group of Common Turkic), where the Latin alphabet is already in use, and where the ground for such ideas shown itself very fruitful. 4. “Construction of Womanhood in the Bengali Language of Bangladesh”, Raasheed Mahmood; University of New South Wales, Sydney. The present essay attempts to explore the role of gender-based language differences and of certain markers that reveal the status accorded to women in Bangladesh. Discrimination against women, in its various forms, is endemic in communities and countries around the world, cutting across class, race, age, and religious and national boundaries. One cannot understand the problems of gender discrimination solely by referring to the relationship of power or authority between men and women. Rather one needs to consider the problem by relating it to the specific social formation in which the image of masculinity and femininity is constructed and reconstructed. Following such line of reasoning this essay will examine the nature of gender bias in the Bengali language of Bangladesh, holding the conviction that as a product of social reality language reflects the socio-cultural behaviour of the community who speaks it. This essay will also attempt to shed some light on the processes through which gender based language differences produce actual consequences for women, who become exposed to low self-esteem, depression and systematic exclusion from public discourse. 5. “Marriage in China as an expression of a changing society”, Elisabetta Rosado David, University of Porto, Portugal, and Università Ca’Foscari, Venezia, Italy. In 29 April 2001, the new Marriage Law was promulgated in China. The first law on marriage was proclaimed in 1950 with the objective of freeing women from the feudal matrimonial system. With the second law, in 1981, values and conditions that had been distorted by the Cultural Revolution were recovered. Twenty years later, a new reform was started, intending to update marriage in the view of the social and cultural changes that occurred with Deng Xiaoping’s “open policy”. But the legal reform is only the starting point for this case-study. The rituals that are followed in the wedding ceremony are often hard to understand and very difficult to standardize, especially because China is a vast country, densely populated and characterized by several ethnic minorities. Two key words emerge from this issue: syncretism and continuity. On this basis, we can understand tradition in a better way, and analyse whether or not marriage, as every social manifestation, has evolved in harmony with Chinese culture. 6. “The Other Woman in the Portuguese Colonial Empire: The Case of Portuguese India”, Maria de Deus Manso, University of Évora, Portugal. This essay researches the social, cultural and symbolic history of local women in the Portuguese Indian colonial enclaves. The normative Portuguese overseas history has not paid any attention to the “indigenous” female populations in colonial Portuguese territories, albeit the large social importance of these social segments largely used in matrimonial and even catholic missionary strategies. The first attempt to open fresh windows in the history of this new field was the publication of Charles Boxer’s referential study about Women in lberian Overseas Expansion, edited in Portugal only after the Revolution of 1975. After this research we can only quote some other fragmentary efforts. In fact, research about the social, cultural, religious, political and symbolic situation of women in the Portuguese colonial territories, from the XVI to the XX century, is still a minor historiographic field. In this essay we discuss this problem and we study colonial representations of women in the Portuguese Indian enclaves, mainly in the territory of Goa, using case studies methodologies. 7. “Heading East this Time: Critical Readings on Gender in Southeast Asia”, Clara Sarmento, Polytechnic Institute of Porto, Portugal. This essay intends to discuss some critical readings of fictional and theoretical texts on gender condition in Southeast Asian countries. Nowadays, many texts about women in Southeast Asia apply concepts of power in unusual areas. Traditional forms of gender hegemony have been replaced by other powerful, if somewhat more covert, forms. We will discuss some universal values concerning conventional female roles as well as the strategies used to recognize women in political fields traditionally characterized by male dominance. Female empowerment will mean different things at different times in history, as a result of culture, local geography and individual circumstances. Empowerment needs to be perceived as an individual attitude, but it also has to be facilitated at the macro­level by society and the State. Gender is very much at the heart of all these dynamics, strongly related to specificities of historical, cultural, ethnic and class situatedness, requiring an interdisciplinary transnational approach.

Políticas públicas municipais na era global: o Programa Município VerdeAzul em questão

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Materialidade em auditoria: o problema da sua aplicação prática

A ocorrência de grandes escândalos financeiros na última década, um pouco por todo o mundo, provocou uma crise de confiança na informação financeira prestada pelas empresas e levou à discussão de conceitos como Corporate Governance e Expectation Gap e a uma “revolução” no mundo da auditoria. A necessidade de confiança na opinião dos auditores conduziu à discussão acerca de como é que o trabalho de auditoria é realizado, em que “bases” é que o auditor determina o que analisar e, por último, como decide o que é material ou não. Esta discussão traz a si associado o conceito de materialidade. O objectivo deste estudo é compreender os aspectos inerentes à determinação da materialidade e a sua importância, tanto no planeamento como na avaliação de resultados. O presente trabalho está estruturado em sete capítulos, correspondendo os cinco primeiros ao enquadramento teórico do tema, realizado através de revisão de literatura. No sexto capítulo explicita-se a investigação empírica realizada sobre a forma como a materialidade é entendida e utilizada pelas Sociedades de Revisores Oficiais de Contas (SROC) em Portugal. Terminamos com a conclusão do estudo, em que, para além das conclusões obtidas, se indicam os problemas e obstáculos encontrados ao longo do mesmo, bem como possibilidades de investigação futura.

The Past, Polish politics of memory, and stereotyping: an intercultural perspective

The main idea of the article is to consider the interdependence between Politics of Memory (as a type of narrating the Past) and Stereotyping. The author suggests that, in a time of information revolution, we are still constructing images of others on the basis of simplification, overestimation of association between features, and illusory correlations, instead of basing them on knowledge and personal contact. The Politics of Memory, national remembrance, and the historical consciousness play a significant role in these processes, because – as the author argues – they transform historically based 'symbolic analogies' into 'illusory correlations' between national identity and the behavior of its members. To support his theoretical investigation, the author presents results of his draft experiment and two case studies: (a) a social construction of images of neighbors based on Polish narrations about the Past; and (b) various processes of stereotyping based on the Remembrance of the Holocaust. All these considerations lead him to state that the Politics of Memory should be recognized as an influential source of commonly shared stereotypes on other cultures and nations.

Optimization, high availability and redundancy in information communications and technology using networks and systems virtualization architectures

Mestrado em Engenharia Informática

Cultivo de Eucalyptus urograndis em atmosfera enriquecida com CO2: mudanças no proteoma cloroplastidial

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)