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Power continuous node

Resistive nodes In this first category of power continuous nodes the power continuity is hidden, as the power entering the resistive ports is converted into thermal power and not explicitly represented by a thermal port, such that energy seems to be dissipated, but careful use of concepts shows that only free energy can be dissipated and that the use of power as a flow of free energy corresponds to an implicit assumption, viz., that the temperature at the thermal port is constant or its fluctuations are slow with respect to the fluctuations of interest, such that the temperature can be considered constant. For a resistive node a semi-positive definite scalar potential function ( entropy production function or dissipation function ) of the independent variables exists that generates its constitutive relations. A resistive node has at least one port. Its node label is R. A modulated resistive node has node label MR. A resistive node or resistor is sometimes called a dissipative node or dissipator. [Pg.14]

It can be proven by means of a linear transformation of the conjugate variables into so-called scattering variables [9, 10] that all power continuous nodes have constitutive relations with a multiplicative form. This means that the vector of dependent port variables can be written as a product of some operator on the vector of independent port variables. When this operator only relates efforts to efforts and flows to flows, a property called non-mixing [11], the multiport is called a transformer (node label TF). If the operator is a function of one or more additional node inputs, it is called a modulated transformer (node label MTF). When this operator only relates efforts to flows and flows to efforts, a property called mixing [11], the multiport is called a gyrator (node label GY). If the operator is a function of node inputs it is called a modulated gyrator (node label MGY). [Pg.14]

As a consequence, all other power continuous nodes are port asymmetric. Another result is that modulation of junctions can only take place in the form of a boolean variable that activates or deactivates the node the junction is then called a switched junction (node labels XO and XI). This allows a variable interconnection structure. [Pg.16]

Junction nodes A junction is a node with power ports that is power continuous and of which the ports are mutually exchangeable without changing its nature this property is called port symmetry Scattering variables can also be used to prove that there exist only two types of power continuous, port symmetric nodes, both with linear constitutive relations (i.e., linearity is not assumed a priori) [9] ... [Pg.15]

Feedforward networks that employ a suitable activation function are very powerful. A network that contains a sufficient number of nodes in just one hidden layer can reproduce any continuous function. With the addition of a second hidden layer, noncontinuous functions can also be modeled. [Pg.28]

We turn from consideration of the nodes to a continuous distribution with density Z(x). Here Z(n) = XZ(x), Z(n +1) = XZ(x + X), etc. (it does not seem reasonable to introduce for a smooth function of the density new notations, since the node functions Z(n), b(n), will not be encountered any more below). Assuming A to be constant, we expand in a power series of A, confining ourselves everywhere to the first non-vanishing term—we suppose the functions Z, b, q to vary little over the length A, so that Z > AZ > A2Z" >. Thus, we obtain the fundamental equation... [Pg.125]

Part wall thickness can now be predicted quite accurately with finite element analysis. The physical sheet is replaced with a two-dimensional mesh of triangular elements and nodes, which is then mathematically deformed imder increasing load. When the nodes touch the electronic surface of the mold, they are affixed. Force continues to increase imtil all or most of the elements are rendered immobile. Currently the Ogden power-law model is used as the pol5mier elastic constitutive equation or response to applied load (28). [Pg.8476]

Recently, much attention has been paid to the so-called anisotropic gap state superconductor. At T = 0, Cs(0)/yT<- exhibits (T/T ) temperature dependence in the case of gap function with point node, while (T/T<-) temperature dependence is observed in the case of gap function with line node. As low-energy excitation is possible, one can observe the power law T dependence at the low temperature in specific heat for p and d wave superconductors. The measurements of specific heat give extremely fruitful information about the superconducting gap complementary with other measurements, such as NMR. Even if a superconductor is not bulk, zero resistance may be observed when there is a continuous superconducting current path inside the sample. By using specific heat measurements, it is possible to determine whether superconducting behavior occurs in the bulk or not. We note that it is extremely important to check the bulk nature of pressure-induced SC by specific heat measurements imder pressure. [Pg.37]

Sleep Deprivation Attacks. In this case, the target of the intruder is to maximize the power consumption of a victim, so that its lifetime is minimized. In particular, a power-consuming action is required every time a node is called to perform the test. Therefore, the compromised node could force continuously a victim node z to perform the test, thus implementing a sleep deprivation attack against it. This attack is prevented in two ways. The first is that the test is executed by a node z on the basis of the advertisement of a node j only if the reputation of j is greater than a suitable threshold. But, after the first test failures, the reputation of j will go under the threshold. The second way is that, as described in Section 4, each node keeps the timestamp of the last performed test on a node. The test can be repeated only if the new request arrives at a time not too close to that of the last request. [Pg.224]

The number of integrated functionalities will continue to increase and the future scalability of this approach is limited as previously described, e.g., limited by the computation power of single core processor(s) and reliability restrictions (e.g., usage of fans is not allowed). If processor PI does not provide sufficient computation power new processors / nodes will be needed. Adding new processors / nodes and their associated communication buses leads to additional reliability and availability issues (e.g., material reliability, EMC). [Pg.9]


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See also in sourсe #XX -- [ Pg.14 ]




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