Strategic Issues in Implementing Electronic-ID Services

Author(s):  
Bishwajit Choudhary

During the past few years, e-security solutions (e.g., digital certificates, e-signatures, e-IDs) gained tremendous attention as they promised to plug security loopholes and create trusted electronic markets. Implementation of such critical, complex and costly security solutions demands thorough assessment at technical, as well as business levels. Based on the author’s experience at one of Scandinavia’s leading vendors of banking solutions and infrastructure, the paper develops basic concepts, discusses strategic (product, market and technical) concerns and, finally, summarizes the contemporary challenges facing the implementation of e-ID schemes.

Author(s):  
Augustín Görög ◽  
Ingrid Görögová

Abstract Within the solving VEGA 1/0615/12 research project "Influence of 5-axis grinding parameters on the shank cutter´s geometric accuracy", the research team will measure and evaluate geometrical accuracy of the produced parts. They will use the contemporary measurement technology (for example the optical 3D scanners). During the past few years, significant changes have occurred in the field of geometrical accuracy. The objective of this contribution is to analyse the current standards in the field of geometric tolerance. It is necessary to bring an overview of the basic concepts and definitions in the field. It will prevent the use of outdated and invalidated terms and definitions in the field. The knowledge presented in the contribution will provide the new perspective of the measurement that will be evaluated according to the current standards.


2003 ◽  
Vol 56 (3) ◽  
pp. 309-329 ◽  
Author(s):  
Jianjun Wang ◽  
Runfang Li and ◽  
Xianghe Peng

In this paper, the progress in nonlinear dynamics of gear driven systems in the past twenty years is reviewed, especially the gear dynamic behavior, by considering the backlash and time-varying mesh stiffness of teeth. The basic concepts, the mathematical models and the solving methods for the non-linear dynamics of geared systems are then reviewed. The critical issues for further research on the nonlinear vibration in gear transmission systems are also discussed. There are 204 references cited in this review article.


Antiquity ◽  
1947 ◽  
Vol 21 (83) ◽  
pp. 116-121
Author(s):  
M. E. L. Mallowan

IT is a pity that Hume, who carried the Cartesian system of philosophy to its logical conclusion, lived too early to contemplate the discoveries of the past century in Egypt and Babylonia, for he would readily have understood and assimilated the ancient processes of thought which arose at the dawn of history in Western Asia--‘ And no truth appears to me more evident ’, he said, ‘ than that beasts are endowed with thought and reason as well as man ’. The arguments are developed in section XVI of ‘ The Understanding ’, where there are many delightful passages of special relevance to the ancient concepts about life. Again, he said that a bird, that ‘chooses with such care and nicety the place and materials of the nest, and sits upon her eggs for a due time, and in a suitable season, with all the precaution that a chymist is capable of in the most delicate projection, furnishes us with a lively instance of animal sagacity’. Locke, on the other hand, in his discussion of animal rationale, had refused to be drawn so far. ‘ And if Balaam’s ass had, all his life, discussed as rationally as he did once with his master, I doubt yet whether any one would have thought him worthy the name ‘man’, or allowed him to be of the same species with himself ’. Of these two statements Hume’s approximates more closely to the earliest Asiatic view of life, and it is on these lines that Messrs. Frankfort, Wilson, and Jacobsen have approached their problem, which, briefly put is-how did the early thinkers of the Near East come to say what they did about creation, the state, and man ? Professor and Mrs Frankfort define the earliest mode of thought as an ‘ I-thou ’ relation-ship, by which they mean that the primitive Asiatic conceived of all creation in a reciprocal nexus wherein the material world was percipient as well as perceived, and Professor Wilson elaborates the same theme by saying that for the Egyptians the world was consubstantial, and that their view of life might be defined as monophysite. Pro-fessor Jacobsen’s contribution illustrates to what extent the Mesopotamian view of life conformed with this outlook, for example how salt and grain were conceived of as animate beings in a close relationship with man, responsible and responsive to him. Other ideas peculiar to the Mesopotamian mind are no less clearly stressed, and herein lies the fascination of the book, that we have a comparative examination of the Egyptian, Mesopotamian and Israelite approach to life, for Hebrew theology was cast out of a similar matrix. In a concluding chapter by the Frankforts, we see the dawn of a new intellectual era. The Greek physical philosophers, regardless of the data of experience, carried the old basic concepts of the Egyptians and Mesopotamians from a concrete to an abstract frame and worked them to a reductio ad absurdurn, much as Hume did for the concepts of Cartesian philosophy. Their prescience gave birth to science. Nor should we forget that Thales of Miletus prophesied an eclipse, thereby following in the wake of the Babylonian astronomers, who had made similar observations and recorded them centuries earlier.


Author(s):  
Jukka Tyrkkö

This chapter outlines the state of the art in corpus-based language teaching and digital pedagogy, focusing on the differences between using corpora with present-day and historical data. The basic concepts of corpus-based research such as representativeness, frequency, and statistical significance can be introduced to students who are new to corpus methods, and the application of these concepts to the history of English can deepen students’ understanding of how historical varieties of the language are researched. This chapter will also address some of the key challenges particular to teaching the history of English using corpora, such as dealing with the seemingly counterintuitive findings, non-standard features, and small datasets. Finally, following an overview of available historical corpora and corpus tools, several practical examples of corpus-driven activities will be discussed in detail, with suggestions and ideas on how a teacher might prepare and run corpus-based lessons.


Author(s):  
Adam C. Sedgwick ◽  
James T. Brewster ◽  
Tianhong Wu ◽  
Xing Feng ◽  
Steven D. Bull ◽  
...  

Indicator displacement assays (IDAs) offer a unique and innovative approach to molecular sensing. This Tutorial review discusses the basic concepts of each IDA strategy and illustrates their use in sensing applications.


Catalysts ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 236 ◽  
Author(s):  
Taiki Adachi ◽  
Yuki Kitazumi ◽  
Osamu Shirai ◽  
Kenji Kano

Direct electron transfer (DET)-type bioelectrocatalysis, which couples the electrode reactions and catalytic functions of redox enzymes without any redox mediator, is one of the most intriguing subjects that has been studied over the past few decades in the field of bioelectrochemistry. In order to realize the DET-type bioelectrocatalysis and improve the performance, nanostructures of the electrode surface have to be carefully tuned for each enzyme. In addition, enzymes can also be tuned by the protein engineering approach for the DET-type reaction. This review summarizes the recent progresses in this field of the research while considering the importance of nanostructure of electrodes as well as redox enzymes. This review also describes the basic concepts and theoretical aspects of DET-type bioelectrocatalysis, the significance of nanostructures as scaffolds for DET-type reactions, protein engineering approaches for DET-type reactions, and concepts and facts of bidirectional DET-type reactions from a cross-disciplinary viewpoint.


2012 ◽  
Vol 542-543 ◽  
pp. 111-114
Author(s):  
Xue Song Zhou ◽  
Su Yang Li ◽  
You Jie Ma

Chaos has been studied in power system for the past two decades, chaotic phenomena have been observed in power system, such as chaotic oscillation, voltage collapse, etc. The basic concepts of chaos [1] and its characteristics [2] are introduced simply in this article. The recent chaotic studies and applications are introduced in this paper, including the routes to chaos, the ways applied to control chaos and short-term load forecasting methodology. This article also presents shortcomings and challenges of chaos studies in power system.


2007 ◽  
Vol 50 (4) ◽  
pp. 913-934 ◽  
Author(s):  
MICHAEL F. HOPKINS

ABSTRACTThe Cold War lasted for almost fifty years and ended nearly twenty years ago. A vast historiography continues to grow. In explaining the past and continuing debate, this article is necessarily selective. It has three aims. The first is to locate the main phases and trends in the debate about the Cold War. The second is to analyse the growing literature on the end of the Cold War. Thirdly, it attempts to identify a number of major themes by looking beyond geopolitical issues to various aspects of the cultural Cold War, to espionage and intelligence, and to the economic dimension. The review has three main conclusions. First, diplomacy and strategic issues have been extensively explored, though more is needed on the Soviet Union and especially on China. Secondly, analysis of the economic and intelligence dimension has improved, though, again, knowledge of the Soviet Union and China remains thin. Lastly, the growing coverage of cultural issues has deepened our understanding but needs to be integrated into political and strategic narratives.


1978 ◽  
Vol 25 (5) ◽  
pp. 52
Author(s):  
Marie Molinoski

Everyone enjoys games, and games can be an enjoyable and meaningful way to reinforce basic concepts or provide drill in a way that is not boring. During the past few years I have used games with seventh- and eighth-grade students and have been pleased with the results. The successful use of the games and the enthusiasm of the students have enco uraged me to make up mathematics card games of my own. “Black Jack,” which is one of mine, provides practice with positive and negative numbers. It is based on the actual card game and is easy to learn.


Author(s):  
Michael Chandross

The use of molecular dynamics (MD) simulations in nanotribology has made many advances in the past twenty years. While early simulations were limited to hundreds or thousands of atoms undergoing shear at 100 m/s, the current state of the art simulations in nanotribology approach millions of atoms with shear rates that can, in certain cases, match experiment. However, many of the exciting current simulations involve techniques that can be difficult for non-experts to understand. In this tutorial we hope to alleviate some of this confusion by reviewing the basic concepts that form the foundations of molecular dynamics (MD) simulations. This will include both a discussion of the method in general, was well as a focus on the use of MD in nanotribological simulations.


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