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The authors review the trends in the use of computers in the delivery and support of career guidance and counseling identified at the symposium International Perspectives on Career Development. The papers presented emphasized that 20th‐century computer‐based systems continue to be used, mainly delivered via the World Wide Web. These systems are enhanced through audio, video, graphics, strategies to provide needs assessment, and support by cybercounselors or expert system design. The papers also revealed a new trend: the use of elegant Web sites to store and search immense libraries of resources needed by professionals and clients and to facilitate communication and collaboration among professionals in cyberspace. Concerns, issues, and resources related to many areas, including the readiness of clients to use computer‐based systems, were also raised; existing sources of guidelines are noted.  相似文献   
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Conclusion We began this article by asking whether the Polish crisis is a socialist or a Polish disease. By citing the structural factors, we brought out the common difficulties affecting all East European societies in their political and economic development. These difficulties arose out of the transition from extensive to intensive economic growth and the consequent need to replace political mobilization of the population with their political integration. The structural contradictions occurred together with conjunctural developments in the world economy, the collapse of detente, the post-war demographic explosion, and natural calamities. Poland was least able to cope with these structural and conjunctural dynamics. The result was a society united on a national basis in its conflicts with the Party State apparatus. This conflict was never resolved by Solidarity nor by the subsequent military coup.While Poland and Romania had quite similar structural and conjunctural dynamics, it was only in Poland that the constellation of nation-specific factors yielded a societal reaction of system-threatening character. Looking at the rest of Eastern Europe, we do not see a similar constellation of factors. Rather, the combination of structural, conjunctural, and specific conditions has prevented the deeper contradictions from evolving into Solidarity-type mass movements of the Polish variety. Thus, we believe that the Polish developments will not be replicated in any of the other East European countries in the foreseeable future.Does this mean that the Polish experience is so unique that it is without relevance for the other East European states? On the contrary, the recognition of common structural problems points to fundamental conflicts in all the countries of actually existing socialism. The essence of these conflicts may be the same. It is the ability to identify and deal with them that distinguishes one East European regime from another. This ability varies with the specific and conjunctural factors as applied to each country. While there is little likelihood that the Polish disease will spread, this is partly because the other East European states are beginning to take preventive measures. In other words, they are learning from the Polish experience.There are several indicators that these regimes have learned from the Polish crisis. We can summarize them in the following predictions:First, we believe that state power and the repressive apparatus of the various East European countries will be reinforced and made more effective. This applies not so much to overt shows of force but to more sophisticated methods of social control and repression: e.g., limiting information channels, dispersing dissident groups, giving in to workers protests before they spread, taking practical measures to prevent consumer shortages from getting out of hand, and the like.Second, we can expect that oppositional forces, especially intellectuals, will be increasingly restricted in their ability to formulate and articulate system-threatening demands. The East European states will take any measures - jail, slander, internal deportation, cooptation, forced emigration - to make sure that intellectuals' contact with workers is weakened or at least strictly supervised.Third, we can expect the Eastern European states to take further measures to integrate potential system-threatening movements into the official system. We will see further attempts to improve the access possibilities for those social interests that have up to now been neglected, e.g. in physical and social infrastructures, neglected regions. Moreover, there will be renewed efforts to make the system of political socialization (education, propaganda, culture) more effective. Finally, we can expect anti-corruption campaigns within the State, Party, and industrial bureaucracies as the elites attempt to make these organs more legitimate in the eyes of the population.In recent months there seems to be considerable evidence that the East European regimes have taken all these measures. There have been attempts to re-invigorate the official trade unions. Yuri Andropov's succession was marked by a highly publicized anti-corruption campaign designed to win favor among rank-and-file workers. In Romania there have been exhortations towards more self-sufficiency and self-management, so that individual producers will be less dependent on State retail outlets, and the country less dependent on costly foreign imports. The reduction in East-West trade and decline of detente have also given more leeway for the East European repressive apparatus to crack down on dissidents and oppositional movements.With reduced trade, the economic benefits of detente no longer exist as a restraining factor on the authorities. The West now has reduced influence on domestic politics in East Europe. The combination of integration and repressive measures has so far prevented the structural contradictions from growing into true political crises of the Polish variety. Eastern Europe (and Poland) is remarkably quiet.With the broad enthusiasm fostered in the West by the rise of Solidarity, it is understandable that its brutal demise had generated parallel feelings of disillusionment. It would be erroneous to consider the Polish events as an archetype for Eastern Europe. The problems of East European regimes reflect a general system crisis (economic and political), each country's response depends on specific local conditions and fortuitous conjunctures. If the Polish events are to be understood, they must be explained as a variant in a larger East European context.Having concentrated on the crisis aspects in Poland and Romania should not blind us from the fact that these systems have an amazing ability to reproduce themselves - to muddle through. Actually existing socialism is more than simply brute force. Each of the East European societies exhibits a complex dialectic between the forces of functional stability and the forces of immanent contradictions. As such, in addition to their structural aspects, we must analyze each of these societies in their differing vulnerability to conjunctural events and in their specific political, social, and cultural characters.For those who seek to replace actually existing socialism with a more emancipatory socialism, the Polish crisis constitutes a key point of departure. It should be discussed both in terms of what it means for Poland, and for Eastern Europe. The Polish events provide further evidence that the tasks of social theory reside as much in explaining why societies muddle through as why they fall apart.  相似文献   
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Sedentary behavior has already been associated with mortality, cardiovascular disease, and cancer. Questionnaires are an affordable tool for measuring sedentary behavior in large epidemiological studies. Here, we introduce and evaluate two statistical methods for quantifying measurement error in questionnaires. Accurate estimates are needed for assessing questionnaire quality. The two methods would be applied to validation studies that measure a sedentary behavior by both questionnaire and accelerometer on multiple days. The first method fits a reduced model by assuming the accelerometer is without error, while the second method fits a more complete model that allows both measures to have error. Because accelerometers tend to be highly accurate, we show that ignoring the accelerometer's measurement error, can result in more accurate estimates of measurement error in some scenarios. In this article, we derive asymptotic approximations for the mean-squared error of the estimated parameters from both methods, evaluate their dependence on study design and behavior characteristics, and offer an R package so investigators can make an informed choice between the two methods. We demonstrate the difference between the two methods in a recent validation study comparing previous day recalls to an accelerometer-based ActivPal.  相似文献   
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This paper presents a simply viewed framework that brings together various concepts of regression, prediction, and principal components. Several new concepts related to prediction are introduced, and then the interrelationships of these concepts are established. The generalizations are examined in detail and are illustrated in the context of a well known data set.  相似文献   
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Consider comparing between two treatments a response variable, whose expectation depends on the value of a continuous covariate in some nonlinear fashion. We fit separate segmented linear models to each treatment to approximate the nonlinear relationship. For this setting, we provide a simultaneous confidence band for the difference between treatments of the expected value functions. The treatments are said to differ significantly on intervals of the covariate where the simultaneous confidence band does not contain zero. We consider segmented linear models where the locations of the changepoints are both known and unknown. The band is obtained from asymptotic results.  相似文献   
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Population and Environment - This paper joins a growing body of research linking measures of the physical environment to population well-being, with a focus on neighborhood toxins. Extending a...  相似文献   
10.
This paper examines vocabularies of emotion in the discovery narratives of a group of genetic scientists. The discovery of the gene for myotonic dystrophy in 1992 was part of a unique and highly competitive phase of molecular genetic research into single gene hereditary conditions. Members of a small group of scientists who made a significant contribution to the discovery of the gene were interviewed sixteen years later about the impact of that discovery. They structured their memories into narrative accounts characterized by vivid recall, colourful language and use of an emotional repertoire to reconstruct the dynamics, relationships and personal meaning of the discovery. The focus of this emotional language was on what it meant to be a molecular scientist, the dynamics of the incremental work that led to eventual success, the networks surrounding the team and the legacy of discovery in relation to science and to the individual scientists. The emotional repertoire revealed subtle differences between accounts, where there was universal recognition of the importance of the discovery for a scientific career but ambivalence regarding its personal meaning for some key actors.  相似文献   
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