Entanglement distribution is central to the modular scaling of quantum processors and establishing quantum networks. Color centers with telecom-band transitions and long spin coherence times are suitable candidates fo...
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New computerscience graduates are inadequately prepared to apply their abstract knowledge, and they have rarely worked in the teams required in modern business. To remedy these shortcomings and alleviate the low moti...
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New computerscience graduates are inadequately prepared to apply their abstract knowledge, and they have rarely worked in the teams required in modern business. To remedy these shortcomings and alleviate the low motivation that often accompanies the first years of college, we proposed that a pilot group of entering freshmen should be formed into a four-year experimental team. Unlike traditional course-at-a-time approaches, this supplements the existing curriculum by integrating material across courses through team construction of software projects. Under the guidance of faculty and graduate student mentors, students work cooperatively on projects related not just to programming but to the entire lifecycle of software production, from market analysis to revision based on technical support. Initial projects are team-oriented and scaled to the capabilities of entering students while final projects span the product development cycle and involve several semesters of effort. Industrial representatives provide a practical perspective by presenting seminars on special topics and evaluating student projects in light of professional standards. This type of experiment provides the industrial community with students better prepared to face the challenges of professional software development. It also offers consolidated learning, enhanced student retention, significant student-faculty involvement, and the potential to identify learning experiences that may be usefully integrated into existing courses.
The author proves persistency of excitation of the output of an output-reachable, possibly unstable linear system under certain input conditions, and applies this result to adaptive identification and indirect adaptiv...
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The author proves persistency of excitation of the output of an output-reachable, possibly unstable linear system under certain input conditions, and applies this result to adaptive identification and indirect adaptive control. In adaptive identification, he proves exponential parameter convergence regardless of stability of the identified plant. In indirect adaptive control he proves exponential parameter convergence along with asymptotic time invariance and global experimental stability of the controlled closed-loop system.
In this paper, the reduction of interferometric noise by superposition of high frequency modulation is analyzed. It is shown that the nature of this reduction is due to a redistribution of noise energy from baseband t...
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In this paper, the reduction of interferometric noise by superposition of high frequency modulation is analyzed. It is shown that the nature of this reduction is due to a redistribution of noise energy from baseband to higher frequencies where it can be discarded by low-pass filtering. Detailed analysis revealed the dependence of the noise reduction factor on the product f0-tau, and The modulation index of the high frequency superimposed modulation. The proper choice of parameters can lead to complete elimination of the converted phase noise from the system.
Three alternative methods for implementing recovery blocks (RB) are conceivable for backward error recovery in concurrent processing: the asynchronous, synchronous, and pseudorecovery point implementations. With the ...
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Three alternative methods for implementing recovery blocks (RB) are conceivable for backward error recovery in concurrent processing: the asynchronous, synchronous, and pseudorecovery point implementations. With the asynchronous approach, unbounded rollback propagations are a serious problem. While the synchronous approach completely avoids unbounded rollback propagations, process autonomy is sacrificed and processes are forced to wait for commitments from others to establish a recovery line, resulting to inefficient time utilization. As a compromise between asynchronous and synchronous RBs, it is proposed that pseudorecovery points (PRP) be inserted so that unbounded rollback propagations are avoided while still maintaining process autonomy. Using standard assumptions in computer performance analysis, a model is developed to quantitatively analyze these 3 methods. The model is used to estimate: 1. the interval between 2 successive recovery lines for asynchronous RBs, 2. mean loss in computation power for the synchronized method, and 3. additional overhead and rollback distance in case PRPs are used.
A generalized charge pumping model has been developed which extends the use of charge pumping from a study of traps at the Si-SiO2 interface to a study of traps in the oxide. The analytical model, based on tunneling t...
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A generalized charge pumping model has been developed which extends the use of charge pumping from a study of traps at the Si-SiO2 interface to a study of traps in the oxide. The analytical model, based on tunneling theory, allows the spatial distribution of near-interface oxide traps to be determined from variable frequency charge pumping data. Profiling of near-interface oxide traps in irradiated MOSFET's as well as SONOS nonvolatile memory devices is presented.
The authors report that comparison with measured 75-MHz CMOS ring-oscillator speed degradation suggests that quasi-static circuit aging simulations using DC stress data do not underestimate circuit degradation. Roughl...
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The authors report that comparison with measured 75-MHz CMOS ring-oscillator speed degradation suggests that quasi-static circuit aging simulations using DC stress data do not underestimate circuit degradation. Roughly speaking, 10% degradation in NMOSFET linear current results in only about 1.3% increase in CMOS inverter propagation delay. This 10% current degradation occurs in an inverter-based circuit over a time that is about six times the MOSFET DC lifetime at maximum I/sub sub/ and about 30 times the DC lifetime at maximum I/sub sub//sup 3//I/sub ds//sup 2/.< >
After a brief emphasis about the interconnected world, including Cyber-Physical Systems of Systems, the increasing importance of the decision-making by autonomous, quasi-autonomous, and autonomic systems is emphasised...
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After a brief emphasis about the interconnected world, including Cyber-Physical Systems of Systems, the increasing importance of the decision-making by autonomous, quasi-autonomous, and autonomic systems is emphasised. Promising roles of computational understanding, computational awareness, and computational wisdom for better autonomous decision-making are outlined. The contributions of simulation-based approaches are listed.
We consider the robust performance problem of maintaining the output sensitivity function small despite the presence of block diagonal uncertainty at the plant input. For the case of two blocks of uncertainty, we stud...
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We consider the robust performance problem of maintaining the output sensitivity function small despite the presence of block diagonal uncertainty at the plant input. For the case of two blocks of uncertainty, we study this problem by analyzing bounds upon the structured singular value. It is shown that the potential difficulty of attaining robust performance is primarily determined by the difficulty of maintaining a set of interaction parameters small. We derive a robustness indicator which is useful in detecting this potential difficulty. The indicator is a function of both the plant condition number as well as its input directionality properties.
The ac electromigration lifetime, without dc component, has been studied in a wide frequency range (mHz to 200 MHz), and is found to be linearly proportional to the repetition frequency of the ac stressing current. Th...
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The ac electromigration lifetime, without dc component, has been studied in a wide frequency range (mHz to 200 MHz), and is found to be linearly proportional to the repetition frequency of the ac stressing current. This behavior is observed in both of the metalization systems (Al-2% Si and Cu) investigated. This provides further confirmation that ac lifetime is orders of magnitude longer than dc lifetime and CMOS signal lines may be called upon to carry much larger current than allowed in the present practice.
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