- Zebrafish Biomedical Research Applications
- Wireless Communication Networks Research
- Advanced MIMO Systems Optimization
- Neuroscience and Neuropharmacology Research
- Advanced Wireless Communication Techniques
- Neural dynamics and brain function
- Advanced Wireless Network Optimization
- Neurogenesis and neuroplasticity mechanisms
- Cooperative Communication and Network Coding
- IPv6, Mobility, Handover, Networks, Security
- Mobile Ad Hoc Networks
- Single-cell and spatial transcriptomics
- Physiological and biochemical adaptations
- Electric Vehicles and Infrastructure
- Cell Image Analysis Techniques
- Congenital heart defects research
- Advanced Fluorescence Microscopy Techniques
- Smart Grid Energy Management
- Full-Duplex Wireless Communications
- Electric Power System Optimization
- Smart Parking Systems Research
- Cognitive Radio Networks and Spectrum Sensing
- Neural Networks and Applications
- Neuroscience of respiration and sleep
- Wireless Networks and Protocols
Northwestern University
2013-2024
National Centre for Biological Sciences
2024
University of Cambridge
2024
PES University
2021
Cornell University
2013
Amrita Vishwa Vidyapeetham
2013
Lehigh University
2003-2012
Princeton University
1999-2003
Rutgers, The State University of New Jersey
2002
AT&T (United States)
2002
This paper investigates the diversity gain offered by implementing network coding (R. Ahlswede et al., 2000) over wireless communication links. The algorithm is applied to both a containing distributed antenna system (DAS) as well one that supports user cooperation between users. results show network-coded DAS leads better performance compared conventional DAS, at lower hardware cost and higher spectral efficiency. In case of cooperation, yields additional diversity, especially when there...
User mobility management is one of the important components mobile multimedia systems. In a cell-based network, should be able to seamlessly obtain transmission resources after handoff new base station. This essential for both service continuity and quality assurance. this paper, we present strategies accommodating continuous users through estimating resource requirements potential connections. A diverse mix heterogeneous traffic with considered. The investigate static dynamic allocation...
Energy efficiency is an important issue in mobile wireless networks since the battery life of terminals limited. Conservation power has been addressed using many techniques. This paper addresses energy medium access control (MAC) protocols for networks. The develops a framework to study consumption MAC protocol from transceiver usage perspective. then applied compare performance set that includes IEEE 802.11, energy-conserving (EC-MAC), PRMA, multiservices dynamic reservation-TDMA...
Versatile, sterically accessible imaging systems capable of in vivo rapid volumetric functional and structural deep the brain continue to be a limiting factor neuroscience research. Towards overcoming this obstacle, we present integrated one- two-photon scanned oblique plane illumination (SOPi, /sōpī/) microscopy which uses single front-facing microscope objective provide light-sheet scanning based capability at subcellular resolution. Our planar scan-mirror optimized architecture allows for...
An emerging consensus from studies of axial and limb networks is that different premotor populations are required for speeds locomotion. important but unresolved issue why this occurs. Here, we perform voltage-clamp recordings motoneurons in larval zebrafish during “fictive” swimming to test the idea systematic differences biophysical properties associated with differential tuning weight timing synaptic drive, which would help explain population shifts. We find increases speed accompanied by...
Spinal circuit development Motor neuron circuits in the zebrafish spinal cord support both rapid evasion response and leisurely swimming response. Kishore et al. now follow of inhibitory interneurons as these are assembled larva. Interneurons generated early drive different sorts synapse onto subcellular sections motor neurons than later development. Thus, slower supported by same cellular components ways. The authors suggest that follows an opportunistic rule which what is available to them...
Spinal motor neurons and the peripheral muscle fibers they innervate form discrete units that execute movements of varying force speed. Subsets spinal also exhibit axon collaterals influence output centrally. Here, we have used in vivo imaging to anatomically characterize central innervation patterns axial larval zebrafish. Using early born "primary" their division epaxial hypaxial into four distinct quadrants as a reference, define three types later "secondary" units. The largest is...
This paper studies the number of voice users (user capacity) supported on uplink a single-macrocell/single-microcell code-division multiple-access system. A "hotspot" microcell is embedded within larger macrocell and operates over same bandwidth as cell. Analytic methods are presented for computing user capacity which account propagation loss, interference, power control, random locations terminals, well two distinct by select base stations (tiers). Along with exact capacity, technique...
Mobile computers typically have limited energy for computing and communications due to short battery lifetimes. Encoding, decoding, transmission of video information require significant communication resources. Low power encoding decoding schemes been researched extensively. In this paper, we focus on processing encoded under low conditions. Such processing, while conserving power, attempts reduce deterioration quality.
The number of simultaneous users (or user capacity) supportable on the uplink a multiple-macrocell code division multiple-access (CDMA) system with multiple "hotspot" microcells embedded within is studied. These operate same frequency as macrocells and are installed in regions high demand. It shown that capacity depends how distributed among cells, maximum (called attainable occurs when all cells serve roughly users. approach builds two-cell analysis published previously, for single...
Different speeds of locomotion require heterogeneous spinal populations, but a common mode rhythm generation is presumed to exist. Here, we explore the cellular versus synaptic origins rhythmicity at different by performing electrophysiological recordings from premotor excitatory interneurons in larval zebrafish. Chx10-labeled V2a neurons are divided into least two morphological subtypes proposed play distinct roles timing and intensity control. Consistent with generating output patterning...
Mixed electrical-chemical synapses potentially complicate electrophysiological interpretations of neuronal excitability and connectivity. Here, we disentangle the impact mixed within spinal locomotor circuitry larval zebrafish. We demonstrate that soma size is not linked to input resistance for interneurons, contrary biophysical predictions ‘size principle’ motor neurons. Next, show time constants are faster, excitatory currents stronger, potentials larger in lower neurons, linking synapse...
This paper examines the effect of soft handoff on uplink user capacity a CDMA system consisting single macrocell in which hotspot microcell is embedded. The users these two base stations operate over same frequency band. In scenario studied here, both and serve each received copies desired user's signal are summed using maximal ratio combining. Exact approximate analytical methods developed to compute capacity. Simulation results demonstrate 20% increase compared hard handoff. addition,...
Abstract We present an open access scanned oblique plane microscopy platform Crossbill . It combines a new optical configuration, hardware assembly, systematic alignment protocol, and dedicated control software to provide compact, versatile, high resolution single objective light-sheet platform. The demonstrated configuration yields the most affordable sub-micron system date. add galvanometer enabled tilt-invariant lateral scan for multi-plane, multi-Hz volumetric imaging capability. A...
This paper examines the downlink user capacity in a CDMA system composed of macrocell and microcell, where both cells use same frequency channel. The effect channel dispersion on number simultaneous users supported is studied for three different power control methods. Channel produces in-cell interference variable fading received signal power. Novel analytical methods are developed to account effects; these techniques derive any delay profile using results uniform profile. capacities...
This paper examines the uplink user capacity in a two-tier code division multiple access (CDMA) system with hotspot microcells when terminal power is limited and wireless channel finitely-dispersive. A finitely-dispersive causes variable fading of signal at output RAKE receiver. First, two-cell composed. one macrocell embedded microcell studied analytical methods are developed to estimate as function dimensionless parameter that depends on transmit constraint cell radius. Next, novel study...
A key way for the power grid to withstand increasing demand electricity and a more diverse unpredictable mix of energy resources is encourage side participation in market. Recent rulings by Federal Energy Regulatory Commission (FERC) favor not only inclusion but also compensation Demand Response (DR) aggregators wholesale In this paper, we study market effects including Green Management System (GEMS), future program that will take advantage operational flexibility certain types loads shape...
We develop a game theoretic framework for effective and adaptive inter-cell interference management in the OFDMA-based WiMAX/3GPP-LTE systems. Such approach requires no fixed spectrum planning beforehand does not affect usage users that are subject to interference. Based on handoff mechanisms WiMAX systems, we also examine means of categorizing who are, or not, potential Different optimization opportunities BSs identified analyzed. The interactions between modeled by Stackelberg which can...
A game theoretic framework is developed in this paper to facilitate inter-cell interference management through cognitive sensing distributively performed by mobile stations (MSs). Using stochastic geometry, we reveal the relationship between effectiveness of and MS's "willingness" perform sensing. Such MS motivated associated beneficial results as well rewards from base station(BS) that encourage Different tradeoffs for BS MSs exist their interactions, which are modeled a Stackelberg paper....
The wind power producers in India are obliged to give a forecast of their advance as per Indian Electricity Grid Code 2010 (IEGC). This work explores Adaptive Neuro-Fuzzy Inference Systems (ANFIS) the average hourly speed. To obtain ANFIS that best suited speed forecasting system, several models were trained, tested, and compared. results for short term using available data have been studied. A typical Supervisory Control Data Acquisition (SCADA) system is modeled transfer host computer...
User mobility management is one of the important components mobile multimedia systems. In a cell-based network, should be able to seamlessly obtain transmission resources after handoff new basestation. This essential for both service continuity and quality assurance. We present strategies accommodating continuous users through estimating resource requirements potential connections. A diverse mix heterogeneous traffic with considered. investigate static dynamic allocation schemes. The scheme...
We consider a multi-hop wireless ad hoc network where all nodes share common channel, and code division multiple access (CDMA) is used to facilitate concurrent transmissions. The model consists of groups that may loosely be termed as clusters. address the question how efficiently intra- inter-cluster communications between source-destination pairs. performance metric considered throughput per unit power. transmissions employ distributed power control are scheduled resolve conflicts. propose...