Search results for "ARCHITECTURE"
showing 10 items of 3706 documents
New facets and an enhanced branch-and-cut for the min-max K -vehicles windy rural postman problem
2011
[EN] The min-max windy rural postman problem is a multiple vehicle version of the windy rural postman problem, WRPP, which consists of minimizing the length of the longest route to find a set of balanced routes for the vehicles. In a previous paper, an ILP formulation and a partial polyhedral study were presented, and a preliminary branch-and-cut algorithm that produced some promising computational results was implemented. In this article, we present further results for this problem. We describe several new facet-inducing inequalities obtained from the WRPP, as well as some inequalities that have to be satisfied by any optimal solution. We present an enhanced branch-and-cut algorithm that t…
Introduction: power – invisible architecture of education
2015
Looking at the focus of power, the entire history of society, in the past and present, can be explained as changes and interactions of power relations or networks of power and power play.1 Westwood...
Optimal Design of an X-Band, Fully-Coaxial, Easily-Tunable Broadband Power Equalizer for a Microwave Power Module
2020
A microwave power module (MPM), which is a hybrid combination of a solid-state power amplifier (SSPA) as a driver and a traveling-wave tube amplifier (TWT) as the final high power stage, is a high-power device largely used for radar applications. A gain equalizer is often required to flatten the TWT output power gain owing to its big gain fluctuations over the operating frequency range. In this paper, the design of an X-band, fully-coaxial, easily-tunable broadband power equalizer for an MPM is presented. The structure is composed of a coaxial waveguide as the main transmission line and a coaxial cavity loaded with absorbing material as a resonant unit. Sensitivity analyses of the attenuati…
Characteristic time scale of auroral electrojet data
1994
The structure function of the AE time series shows that the AE time series is self-affine such that the scaling exponent changes at the time scale of approximately 113 (±9) minutes. Autocorrelation function is shown to have scaling properties similar to those of the structure function. From this result it can be deduced that the time scale at which the scaling properties of the AE data change should equal the typical autocorrelation time of these data. We find the typical autocorrelation time of the AE data is 118 (±9) minutes. The characteristic time scale of the AE data appears as a spectral break in their power spectrum at a period of about twice the autocorrelation time.
Design of MOS Current Mode Logic Gates – Computing the Limits of Voltage Swing and Bias Current
2005
Minimizing a quality metric for an MCML gate, such as power-delay product or energy-delay product, requires solving a system of nonlinear equations subject to constraints on both bias current and voltage swing. In this paper, we will show that the limits of the swing and the bias current are affected by the constraints on maximum area and maximum delay. Moreover, methods for computing such limits are presented.
Democratic values in the aesthetics of classic American pragmatism
2011
Abstract In the present paper an interpretation of the political dimension of pragmatic aesthetic reflection is proposed. The interconnection between politics and aesthetics in three classic American pragmatists: William James (1842–1910), John Dewey (1859–1952), and George Herbert Mead (1863–1931) is evoked. The author claims that by emphasizing the role of democratic values in philosophy and life, the classic American pragmatists encroach upon the field of the arts and aesthetics. Their emphasis put upon individual activity, free expression of thoughts, plurality of the forms of expression, and acceptance of criticism as a tool helping create better solutions in human cooperation can easi…
The Determinants of Performance in China: A Study Focused on Cultural and Institutional Drivers in the Area of Shanghai
2015
We base our work on an historical study and on interviews of Chinese managers living in the area of Shanghai. We use the institutional theoretical stream in combination with the impact of national culture, considering that organizations and managers are influenced by cultural and institutional determinants. In a first part, we describe the theoretical background to the research and our method. Then, in a second part, we present the significant cultural and institutional features of China that enable us to justify several hypotheses about our topic. In a third part, we analyze twelve in-depth interviews, trying to answer our research question. Our basic research question focuses on what “Per…
The Precarization Effect
2015
What’s in the name ‘precarization’? Such a question can always be asked when we are dealing with a highly contestable concept (Gallie, 1956) or a family of concepts — as is definitely the case here, where it is also customary to speak about ‘precariousness’, ‘precarity’, and even ‘precariat’. This is a family of concepts or terms that has been defined in so many different and often incompatible ways that the answer to the question seems to greatly depend on the perspective or approach adopted. This is not as big a problem in the case of ‘precariousness’, which can be used to describe a variety of situations and events quite generally; but it makes all the difference when one refers to ‘prec…
Transducers for the bidirectional decoding of prefix codes
2010
AbstractWe construct a transducer for the bidirectional decoding of words encoded by the method introduced by Girod (1999) in [5] and we prove that it is bideterministic and that it can be used both for the left-to-right and the right-to-left decoding.We also give a similar construction for a transducer that decodes in both directions words encoded by a generalization of Girod’s encoding method. We prove that it has the same properties as those of the previous transducer. In addition we show that it has a single initial/final state and that it is minimal.
Some Decision Results on Nonrepetitive Words
1985
The paper addresses some generalizations of the Thue Problem such as: given a word u, does there exist an infinite nonrepetitive overlap free (or square free) word having u as a prefix? A solution to this as well as to related problems is given for the case of overlap free words on a binary alphabet.