共查询到20条相似文献,搜索用时 15 毫秒
1.
Lyon D 《Bioethics》2008,22(9):499-508
Governing by identity describes the emerging regime of a globalizing, mobile world. Governance depends on identification but identification increasingly depends on biometrics. This 'solution' to difficulties of verification is described and some technical weaknesses are discussed. The role of biometrics in classification systems is also considered and is shown to contain possible prejudice in relation to racialized criteria of identity. Lastly, the culture of biometric identification is shown to be limited to abstract data, artificially separated from the lived experience of the body including the orientation to others. It is proposed that creators of national ID systems in particular address these crucial deficiencies in their attempt to provide new modes of verification. 相似文献
2.
《Biometric Technology Today》2001,9(3):6-7
While good progress is being made with biometrics as a technology, acceptance in the broader sense is still not meeting expectations. There are many reasons for this state of affairs, but one common problem seems to be the high level of misunderstanding between vendors and end users. Proposals for a new jargon-busting methodology called Bantam could help remedy the situation. 相似文献
3.
H. Preuschoft 《Human Evolution》1989,4(2-3):145-156
The variation of body shape among prosimians is reviewed. Special emphasis is placed on the selective advantages, that is
the mechanical reasons, to which variants of the locomotor apparatus can be traced back.
There are differences found in the cheiridia, but at present they cannot be explained in terms of mechanics; there is nearly
no knowledge about the mechanical meaning of their diversity. Myological characteristics of taxa can be explained mechanically,
but this has not yet been done.
Well known are variations of body proportions. These discriminate higher taxa, and are largely coincident with the often-used
locomotor categories. In spite of this, there are only few sound arguments about the real biomechanic value of characteristic
proportions for a given locomotor mode. What is known on this field, is reviewed. Progress can be made only, if the mechanical
conditions, set by postural behavior and locomotion, are understood completely.
The subtle distinctions between lower taxonomic units can normally be identified only on the basis of detailed and quantified
analyses of movements on one hand, and of biometrics on the other. In the few cases in which such studies have been made,
the differences of morphology fit to the mechanical requirements of locomotion which also differ only in quantitative details. 相似文献
4.
《Biometric Technology Today》2002,10(5):9-11
The combined usage of smart cards and biometrics has gained in popularity over the last two years. While smart cards themselves may be highly secure, many smart card suppliers are acknowledging the advantage that biometrics can bring to their products by linking the card to the owner. Meanwhile, an advantage to the biometric industry is a privacy-friendly medium to carry its templates. A number of high profile applications have helped push the convergence of the technologies, but a remaining question is how far this convergence will actually go, with sensor-on-card products just around the corner? 相似文献
5.
Michel Wieviorka 《Ethnic and racial studies》2013,36(5):881-910
As far as multiculturalism is at stake, three kinds of question arise at the more or less confusing meeting point of sociology, political science and political philosophy: What are the sources and meanings of cultural difference in our societies? In what way do institutions and policy-makers in some countries deal with multiculturalism? Why should we favour or not favour multiculturalism? This article tackles these questions in turn and seeks to answer them. Cultural differences are not only reproduced, they are in the constant process of being produced which means that fragmentation and recomposition are a permanent probability. In such a situation, the problem is how to broaden democracy in order to avoid at one and the same time the tyranny of the majority and the tyranny of the minorities. 相似文献
6.
This paper reviews Gould's clock model for heterochronic processes and uses that model to develop simple matrix representations of growth and shape change. Matrix representations of growth and development provide a common formulation for all heterochronic processes. In particular, we show how neoteny can be diagnosed using such a matrix approach. The literature is rife with contradictory representations of how neoteny affects growth allometries and the timing of developmental events, and therefore of the role of neoteny in human evolution. Through the use of multivariate models, we explore these relationships and the internal consistency of opposing views. Gould's neoteny hypothesis for human evolution has been criticized for a number of reasons. Humans do not grow slowly. The slopes of our growth allometries show no common pattern of change vis-a-vis those of our closest relatives. Humans prolong rather than reduce rates of growth and development of body parts; the brain, for example, ceases growing later in humans than in apes, but during this prolonged period of early ontogeny, it grows at a rapid pace. This paper evaluates Gould's hypothesis and its critiques by focusing on particular questions. Does neoteny imply slow growth? Does it imply a unidirectional change in the rates of growth of traits? Under neoteny, should the brain cease growing in ancestor and descendant at the same age? Does prolongation of phases of growth and development confute neoteny? On the other hand, is paedomorphosis an inevitable consequence of prolonged growth and development? We show that, for all of these questions, the answer is no. © 1996 Wiley-Liss, Inc. 相似文献
7.
Abstract Geographic divergence in phenotypic traits between long‐isolated populations likely has a genetic basis, but can phenotypic plasticity generate such divergence rapidly in the initial stages of isolation? Australian tiger snakes (Notechis scutatus, Elapidae) provide a classic model system for the evolution of body size: mean adult sizes are relatively invariant in mainland populations, but many offshore islands have dwarf or giant populations. Previous work has shown a genetic basis to this divergence in long‐isolated islands (>10 000 years), but what of the initial stages of this process? Human translocation of mainland snakes to Carnac Island 90 years ago gives us a unique opportunity to assess the proximate reasons for the giant size of Carnac Island animals compared with mainland conspecifics. Our data suggest a major role for phenotypic plasticity. Feeding trials on captive snakes from both island and mainland populations showed a strong link between food intake and growth rates, similar in the two populations. Snakes given abundant food grew much larger than we have ever recorded in the wild, demonstrating that observed mean body sizes are driven by food availability rather than genetic limits to growth. In combination with earlier work showing genetic divergence in growth rates in snakes from long‐isolated islands, our data suggest that geographical divergence in mean adult body sizes in this system initially is driven by a rapid shift due to phenotypic plasticity, with the divergence later canalized by a gradual accumulation of genetic differentiation. 相似文献
8.
Cindy Horst 《Ethnic and racial studies》2018,41(3):440-447
Thomas Faist’s contribution lies in wishing to deconstruct political perceptions around forced migration that reduce the protection that refugees can access. One important task we have as academics is exactly to challenge dominant discourses that function to oppress or control, serving the interests of some at the costs of others, and to be aware of our own role in perpetuating such discourses. One important area where Faist’s account fails to deconstruct existing discourse on forced migration is related to the political subjecthood of refugees and the political nature of their experiences. The reasons for flight are highly political, refugees are conscious political subjects, and refugee flows have always been a matter of high politics. 相似文献
9.
《Bird Study》2012,59(3):420-422
ABSTRACTAn analysis of the biometrics of 187 individually marked Red-crowned Crane Grus japonensis chicks from Japan revealed that larger chicks were more likely to seen alive in their first-winter. Male chicks were larger than females but sex did not influence apparent survival, nor did brood size determine body size. 相似文献
10.
With the security requirements of networks, biometrics authenticated schemes which are applied in the multi-server environment come to be more crucial and widely deployed. In this paper, we propose a novel biometric-based multi-server authentication and key agreement scheme which is based on the cryptanalysis of Mishra et al.’s scheme. The informal and formal security analysis of our scheme are given, which demonstrate that our scheme satisfies the desirable security requirements. The presented scheme provides a variety of significant functionalities, in which some features are not considered in the most of existing authentication schemes, such as, user revocation or re-registration and biometric information protection. Compared with several related schemes, our scheme has more secure properties and lower computation cost. It is obviously more appropriate for practical applications in the remote distributed networks. 相似文献
11.
Today, scholars from numerous and highly diverse fields are not only addressing the question of what makes us human, but also seeking input from other disciplines to inform their answers to this fundamental issue. However, for the most part, evolutionary anthropologists are not particularly prominent in this discussion, or at least not acknowledged to be. Why is this the case? One reason may be that although evolutionary anthropologists are uniquely positioned to provide valuable insight on this subject, the responses from any one of us are likely to be as different as the research specializations and intellectual experiences that we bring to the table. Indeed, one would anticipate that a paleoanthropologist would not only have different views than a primatologist, geneticist, or behavioral ecologist, but from other paleoanthropologists as well. Yet if asked by a theologian, psychologist, or political scientist, and perhaps most importantly, by any curious person outside the walls of academia, do we have a response that most evolutionary anthropologists could agree on as reflecting our contributions to the understanding of being and becoming human? Our introductory textbooks usually begin with this fundamental question, yet seldom produce a concise answer. © 2012 Wiley Periodicals, Inc. 相似文献
12.
TORBJÖRN TÄNNSJÖ 《Bioethics》2009,23(7):421-432
Ought we to improve our cognitive capacities beyond the normal human range? It might be a good idea to level out differences between peoples cognitive capacities; and some people's reaching beyond normal capacities may have some good side‐effects on society at large (but also bad side‐effects, of course). But is there any direct gain to be made from having ones cognitive capacities enhanced? Would this as such make our lives go better? No, I argue; or at least there doesn't seem to be any evidence suggesting that it would. And it doesn't matter whether we consider the question from a narrow hedonistic perspective, from a more refined hedonistic perspective, from a desire‐satisfaction view, or from some reasonable objective list view of what makes a life go well. Only an extremely perfectionist – and implausible – view of what makes our lives go well could support any direct value in cognitive enhancement. Finally, our sense of identity gives us no good reasons to enhance even our capacity to remember. So, cognitive enhancement as such would not improve our lives. 相似文献
13.
Proposed fish toxicity thresholds for interpreting the biological significance of selenium concentrations measured in environmental media include 2 to 5?µg/L in water, 4?mg/kg dw in fish whole body tissue, 10?mg/kg dw in fish ovaries, and 3?mg/kg dw in fish diets. Use of these thresholds would likely identify fish populations as being at risk at numerous sites across the U.S. However, selenium effects on fish populations in the field have only been conclusively demonstrated at a few locations. Based on our critical review, these threshold values are not consistent with USEPA methodology for deriving criteria, in many cases are not supported by the scientific literature, and, as a result, are generally overly conservative. Based on currently available information, we believe the scientific literature is not supportive of generic sediment or water thresholds, but is supportive of alternative separate whole body thresholds of 9?mg/kg dw for warmwater fish and 6?mg/kg dw for larval coldwater anadromous fish, an ovary threshold of 17?mg/kg dw for warmwater fish, and fish dietary thresholds of 10 and 11?mg/kg dw for warmwater fish and larval coldwater anadromous fish, respectively. 相似文献
14.
Is a dream a meteorite—a bit of material arriving from a distant place that needs to be carefully analyzed to give us knowledge about that place (outside or inside us)? Is it a strange text which has come to us in a foreign language, that needs to be translated into our own? This “meteorite view” is held by some religious and spiritual persons, by many orthodox psychoanalysts and other therapists, and implicitly by many researchers. They all see the dream as something alien, something totally different from our ordinary mental functioning. This paper presents a great deal of research favoring an alternate view—that the dream is an earth-stone, not an alien stone. It may be impressive and beautiful (gemstone), but it's still an earth-stone. The dream is part of our mental functioning. It is one end of a continuum, running from focused waking thought, through looser thought, fantasy, daydreaming, reverie and dreaming. We review reasons why dreams are often considered “totally different”: they're perceptual, not conceptual; they're bizarre; they are “so real”; they're so easily forgotten; they're involuntary; they occur in REM sleep—a totally different state. We demonstrate that none of these reasons are persuasive. In each sense, there is overlap between dreams and other forms of functioning. The continuum view leads to different kinds of research and a different style of dreamwork. It also helps answer questions the field has long struggled with including: Should we study “a dream” or “dreaming”? Are dreams meaningful or meaningless? (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
15.
With the identification of a patient with mutated mitochondrial DNA (mtDNA) of paternal origin, it has been unequivocally proven that not only does paternal mtDNA survive in the zygote, but it can also contribute substantially to the mtDNA pool of adult, human skeletal muscle. The questions are: how often does paternal mtDNA inheritance occur and what mechanisms are involved? In this paper, we will review current knowledge on the fate of sperm mitochondria after fertilization and discuss the impact paternal inheritance may have on our understanding of mitochondrial biology. 相似文献
16.
Hoang Bui Michael Kelly Christopher Lyon Mark Pasquier Deborah Thomas Patrick Flynn Douglas Thain 《Cluster computing》2009,12(4):373-386
Research in the field of biometrics depends on the effective management and analysis of many terabytes of digital data. The
quality of an experimental result is often highly dependent upon the sheer amount of data marshalled to support it. However,
the current state of the art requires researchers to have a heroic level of expertise in systems software to perform large
scale experiments. To address this, we have designed and implemented BXGrid, a data repository and workflow abstraction for
biometrics research. The system is composed of a relational database, an active storage cluster, and a campus computing grid.
End users interact with the system through a high level abstraction of four stages: Select, Transform, AllPairs, and Analyze.
A high degree of availability and reliability is achieved through transparent fail over, three phase operations, and independent
auditing. BXGrid is currently in daily production use by an active biometrics research group at the University of Notre Dame.
We discuss our experience in constructing and using the system and offer lessons learned in conducting collaborative research
in e-Science. 相似文献
17.
Correct species identification is a crucial issue in systematics with key implications for prioritising conservation effort. However, it can be particularly challenging in recently diverged species due to their strong similarity and relatedness. In such cases, species identification requires multiple and integrative approaches. In this study we used multiple criteria, namely plumage colouration, biometric measurements, geometric morphometrics, stable isotopes analysis (SIA) and genetics (mtDNA), to identify the species of 107 bycatch birds from two closely related seabird species, the Balearic (Puffinus mauretanicus) and Yelkouan (P. yelkouan) shearwaters. Biometric measurements, stable isotopes and genetic data produced two stable clusters of bycatch birds matching the two study species, as indicated by reference birds of known origin. Geometric morphometrics was excluded as a species identification criterion since the two clusters were not stable. The combination of plumage colouration, linear biometrics, stable isotope and genetic criteria was crucial to infer the species of 103 of the bycatch specimens. In the present study, particularly SIA emerged as a powerful criterion for species identification, but temporal stability of the isotopic values is critical for this purpose. Indeed, we found some variability in stable isotope values over the years within each species, but species differences explained most of the variance in the isotopic data. Yet this result pinpoints the importance of examining sources of variability in the isotopic data in a case-by-case basis prior to the cross-application of the SIA approach to other species. Our findings illustrate how the integration of several methodological approaches can help to correctly identify individuals from recently diverged species, as each criterion measures different biological phenomena and species divergence is not expressed simultaneously in all biological traits. 相似文献
18.
The human ear is a new feature in biometrics that has several merits over the more common face, fingerprint and iris biometrics. It can be easily captured from a distance without a fully cooperative subject. Also, the ear has a relatively stable structure that does not change much with the age and facial expressions. In this paper, we present a novel method of 3D ear acquisition system by using triangulation imaging principle, and the experiment results show that this design is efficient and can be used for ear recognition. 相似文献
19.
Gaspar-López E Landete-Castillejos T Estevez JA Ceacero F Gallego L García AJ 《Journal of experimental zoology. Part A, Ecological genetics and physiology》2011,315(4):242-249
The aim of the study was to relate seasonal hematology changes with the rest of physiological variations suffered by red deer, such as antler and biometrics cycle, and to assess the relationship between hematology and the effort performed in antler development. Blood samples were taken from 21 male red deer every 4 weeks during 18 months. Samples were analyzed for the main hematological parameters. Simultaneously, biometrics measurements were taken, such as antler length, body weight, body condition score, testicular diameter (TD), and thoracic and neck girth. All the blood cell types (erythrocytes, leukocytes, and platelets) showed seasonal variations, increasing as antler cleaning approached, as did hematocrit and hemoglobin. The final size of antlers was negatively related to leukocyte count, nonlymphoid leukocyte count, red cell distribution width, mean corpuscular hemoglobin, mean platelet volume, and TD, whereas it was positively related to body condition during antler growth. Huge seasonal variations in some hematological values have been found to be related to changes in antler and biometrics measurements. Since these variations are even greater than the caused by deer handling, they should be taken into account when evaluating hematology in deer populations. 相似文献
20.
《Biometric Technology Today》2000,8(1):8-11
As the year draws to a close, Btt is taking the opportunity to investigate the driving forces that have helped shape the biometrics industry over the past 12 months. Using our extensive project database we have been able to create a picture of where the industry is today, in terms of market share, and where the industry is headed as we move into the next century. 相似文献