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تعداد نتایج: 4447837 فیلتر نتایج به سال:
the space now known as complete erdos space ec was introduced by paul erdos in 1940 as the closed subspace of the hilbert space ?2 consisting of all vectors such that every coordinate is in the convergent sequence {0} ? { 1 n : n ? n}. in a solution to a problem posed by lex g. oversteegen we present simple and useful topological characterizations of ec. as an application we determine the ...
a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...
it is definitely necessary to understand the concept and behavior of causation of life insurance policies and its determinants for insurance managers, regulators, and customers. for insurance managers, the profitability and liquidity of insurers can be increasingly influenced by the number of causation through costs, adverse selection, and cash surrender values. therefore, causation is a materi...
in chapter 1, charactrizations of fragmentability, which are obtained by namioka (37), ribarska (45) and kenderov-moors (32), are given. also the connection between fragmentability and its variants and other topics in banach spaces such as analytic space, the radone-nikodym property, differentiability of convex functions, kadec renorming are discussed. in chapter 2, we use game characterization...
one of the most important number sequences in mathematics is fibonacci sequence. fibonacci sequence except for mathematics is applied to other branches of science such as physics and arts. in fact, between anesthetics and this sequence there exists a wonderful relation. fibonacci sequence has an importance characteristic which is the golden number. in this thesis, the golden number is observed ...
One of the visions almost excessively quoted in current discussions of what the information infrastructure of the WWW may ultimately turn out to be is Vannevar Bush’s article ”As we may think” written in 1945, and thus quite some time before the advent of computers as we know them today. In fact, Bush’s vision concerns the organization of information much more than the technical means and instr...
Why do we represent the world around us using causal generalizations, rather than, say, purely statistical generalizations? Do causal representations contain useful additional information, or are they merely more efficient for inferential purposes? This chapter considers the second kind of answer: it investigates some ways in which causal cognition might aid us not because of its expressive pow...
Various traditions within developmental science and psychology have concentrated on either personal or collective correlates as manifestations of well-being. Our claim is that the well-being of any one person is highly dependent on the well-being of her relationships and on the community in which she resides ~Nelson & Prilleltensky, 2005; Prilleltensky, Nelson, & Peirson, 2001!. Well-being may ...
this thesis is presented 10 ghz voltage controlled ring oscillator for high speed application. the voltage controlled ring oscillator was designed and fabricated in 0.13یm cmos technology. the oscillator is 7-stages ring oscillator with one inverter replaced by nand-gate for shutting down in the ring oscillator during idle mode. tri-state inverter was used to control of 126 bit vector in ri...
With great interest, I have been observing the developments in continuous lifelong capture, which has been gaining momentum over the last few years. By lifelong capture, I refer to someone digitally logging every moment and element of their lives, a usually permanent recording of an activity by a participant in the activity. This process often results in the unanticipated capture of valuable mo...
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