166 research outputs found
A conflict sense routing protocol and its performance for hypercubes
No full textIncludes bibliographical references (p. 23-24).Supported by NSF. NSF-DDM-8903385 Supported by ARO. DAAL03-86-K-0171by Emmanouel A. Varvarigos and Dimitri P. Bertsekas
Transposition of banded matrices in hypercubes : a "nearly isotropic" task
No full textIncludes bibliographical references (p. 19).Supported by NSF. NSF-DDM-8903385 Supported by the ARO. DAAL03-92-G-0115by Emmanouel A. Varvarigos, Dimitri P. Bertsekas
Dynamic broadcasting in parallel computing
No full textIncludes bibliographical references (p. 25-26).Supported by the NSF. NSF-DDM-8903385 Supported by the ARO. DAAL03-86-0171by Emmanouel A. Varvarigos and Dimitri P. Bertsekas
Performance of hypercube routing schemes with or without buffering
No full textIncludes bibliographical references (p. 34-35).Supported by the NSF. NSF-DDM-8903385 Supported by the ARO. DAAL03-92-G-0115by Emmanouel A. Varvarigos and Dimitri P. Bertsekas
Partial multinode broadcast and partial exchange algorithms for d-dimensional meshes
No full textCaption title. "Revision of January 1992."Includes bibliographical references (p. 24-26).Supported by NSF. NSF-ECS-8519058 Supported by ARO. DAAL03-86-K-0171by Emmanouel A. Varvarigos and Dimitri P. Bertsekas
Multinode broadcast in hypercubes and rings with randomly distributed length of packets
No full textIncludes bibliographical references (p. 19-20).Cover title.Research supported by the NSF. NSF-DDM-8903385 Research supported by the ARO. DAAL03-b6-K-0171by Emmanouel A. Varvarigos and Dimitri P. Bertsekas
Communication algorithms for isotropic tasks in hypercubes and wraparound meshes
No full textCover title.Includes bibliographical references (p. 29-30).Research supported by the NSF. NSF-ECS-8519058 Research supported by the ARO. DAAL03-86-K-0171by Emmanouel A. Varvarigos and Dimitri P. Bertsekas
Probability bounds on the peak intensity of optical ultrashort light pulse CDMA
No full textIncludes bibliographical references (p. 14).Caption title.Research supported by the NSF. NSF-ECS-8519058 Research supported by the ARO. DAAL03-86-K-0171 Research supported by Bellcore.by Emmanouel A. Varvarigos and Jawad A. Salehi
Exploiting spectrum sharing for soft failure recovery
No full textElastic optical networks (EONs) offer several optimization dimensions that can be harvested to increase network efficiency and survivability. More specifically, the adaptation of the modulation format to a more robust one can recover the quality of transmission (QoT) of a lightpath affected by a soft failure (i.e., a physical layer degradation resulting in QoT deterioration). In this scenario, increasing the robustness of a transmission may require a spectrum increase. Thus, the spectrum also might have to be reconfigured. In this paper, we propose spectrum sharing between lightpaths of classes requiring different rate guarantees. In the case of a soft failure, a high-priority, rate-guaranteed lightpath can expand its spectrum to recover its QoT at the expense of spectrum allocated to a lower-priority, guaranteed minimum rate lightpath. We propose an integer linear programming (ILP) routing and spectrum assignment (RSA) algorithm for the planning phase and an online RSA for the operation phase of the network that optimize spectrum sharing among lightpaths of different classes. Using these proposed techniques can effectively reduce the network costs to guarantee the rate of high-priority connections
Volatile public spending in a model of money and sustainable growth
No full textIn a model where seignorage provides the financing instrument for the government’s budget, public spending volatility has an adverse effect on long-run growth. This negative relationship arises because the incidence of volatility in this type of public policy is responsible for higher average money growth, thus induces individuals to devote less time/effort towards capital accumulation. Another implication of the model is that policy variability provides a possible argument behind the positive correlation between inflation and inflation variability.Growth, Inflation, Seignorage, Volatility
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