It is presented a modality to compute the boundary between the discontinuous (DCM) and continuous (CCM) operating modes in the DC/DC fourth-order PWM converters with parasitic resistances. To reach this goal, an averaged model of the converter has been used. The boundary between DCM and CCM, considered to be the critical load resistance Rcrit, or, equivalently, the critical value of the inducto...

The flows of heat and electricity in a column-type micro-thermoelectric cooler are analyzed by modeling the various interfacial resistances. Electron (barrier tunneling) and phonon (diffuse mismatch) boundary resistances at the thermoelectric/metal interface, and thermal non-equilibrium between electrons and phonons adjacent to this interface (cooling length), increase the thermal conduction re...

GAAR, KERMIT A., JR.,* AUBREY E. TAYLOR, L. JENNINGS OWENS, AND ARTHUR C. GUYTON. Pulmonary capillary pressure and jltration coeficient in the isolated perfused lung. Am. J. Physiol. 213(4): 910-914. 1967.-An “isogravimetric” method was used to estimate the pulmonary capillary pressure, to determine the arterial and venous resistances in the isolated perfused lobe of a dog’s lung, and to determ...

Ralstonia solanacearum is one of the most devastating bacterial plant pathogens due to its large host range, worldwide geographic distribution and persistence in fields. This soilborne pathogen is the causal agent of bacterial wilt and it can infect major agricultural crops thereby reducing significantly their yield. To favor infection, the bacterium delivers, through the type three secretion s...

Here we consider a class of generalized linear chains; that is, the ladder–like chains as a perturbation of a 2n–path by adding consecutive weighted edges between opposite vertices. This class of chains in particular includes a big family of networks that goes from the cycle, unicycle chains up to ladder networks. In this paper, we obtain the Green function, the effective resistance and the Kir...

We have profiled the parasitic source and drain resistances versus current in recessed-gate HFET's with heavily-doped caps, using an InAIAs/n+-InP HFET as a vehicle. We observe a dramatic reduction in the parasitic resistances at moderate-to-high currents as significant current passes through the cap. Consequently, we note very little dependence in gm on the length of the extrinsic gate-source ...

Many mammalian species that interact with venomous snakes show resistances to venoms. The family Sciuridae has several North American members that harass venomous snakes and show proteolytic resistances in their sera. We examined sera collected from an African ground squirrel (Xerus inauris) against two sympatric venomous snakes (Bitis arietans and Naja annulifera) and found no support for prot...

Digital presence in the world of online social media entails significant privacy risks [6, 10, 33, 58, 34]. In this work we consider a privacy threat to a social network in which an attacker has access to a subset of random walk-based node similarities, such as effective resistances (i.e., commute times) or personalized PageRank scores. Using these similarities, the attacker’s goal is to infer ...