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Results for "Jianwei Huang"

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Auction-Based Distributed Resource Allocation for Cooperation Transmission in Wireless NetworksAug 04 2007Cooperative transmission can greatly improve communication system performance by taking advantage of the broadcast nature of wireless channels. Most previous work on resource allocation for cooperation transmission is based on centralized control. In ... More
Electrical Vehicle Charging Station Profit Maximization: Admission, Pricing, and Online SchedulingMay 05 2017Sep 07 2017The rapid emergence of electric vehicles (EVs) demands an advanced infrastructure of publicly accessible charging stations that provide efficient charging services. In this paper, we propose a new charging station operation mechanism, the JoAP, which ... More
Polarization effect of zinc on the region 1-16 of amyloid-beta peptide: a molecular dynamics studyJan 08 2013Zinc is found saturated in the deposited Amyloid-beta (AB) peptide plaques in brains of patients subjected to Alzheimer disease (AD). Zinc binding to AB promotes aggregations, including the toxic soluble AB species. Up to now, only the region 1-16 of ... More
Price Differentiation for Communication NetworksNov 04 2010May 06 2013We study the optimal usage-based pricing problem in a resource-constrained network with one profit-maximizing service provider and multiple groups of surplus-maximizing users. With the assumption that the service provider knows the utility function of ... More
Multi-Dimensional Auction Mechanisms for Crowdsourced Mobile Video StreamingMar 20 2017Jul 07 2018Crowdsourced mobile video streaming enables nearby mobile video users to aggregate network resources to improve their video streaming performances. However, users are often selfish and may not be willing to cooperate without proper incentives. Designing ... More
Achieving an Efficient and Fair Equilibrium Through TaxationAug 10 2017It is well known that a game equilibrium can be far from efficient or fair, due to the misalignment between individual and social objectives. The focus of this paper is to design a new mechanism framework that induces an efficient and fair equilibrium ... More
Cutting Down Training Memory by Re-fowardingJul 31 2018Jan 05 2019Deep Neutral Networks(DNNs) require huge GPU memory when training on modern image/video databases. Unfortunately, the GPU memory as a hardware resource is always finite, which limits the image resolution, batch size, and learning rate that could be used ... More
Incentivizing Energy Trading for Interconnected MicrogridsSep 24 2016In this paper, we study the interactions among interconnected autonomous microgrids, and propose a joint energy trading and scheduling strategy. Each interconnected microgrid not only schedules its local power supply and demand, but also trades energy ... More
Cooperative Planning of Renewable Generations for Interconnected MicrogridsApr 07 2016We study the renewable energy generations in Hong Kong based on realistic meteorological data, and find that different renewable sources exhibit diverse time-varying and location-dependent profiles. To efficiently explore and utilize the diverse renewable ... More
Joint Investment and Operation of MicrogridNov 06 2015In this paper, we propose a theoretical framework for the joint optimization of investment and operation of a microgrid, taking the impact of energy storage, renewable energy integration, and demand response into consideration. We first study the renewable ... More
The boundness of weighted Coxeter groups of rank 3Jul 08 2016We prove that a weighted Coxeter group (W,S,L) is bounded if the rank of W is 3.
DAWN: Delay-Aware Wi-Fi Offloading and Network SelectionFeb 27 2015To accommodate the explosive growth in mobile data traffic, both mobile cellular operators and mobile users are increasingly interested in offloading the traffic from cellular networks to Wi-Fi networks. However, previously proposed offloading schemes ... More
Analysis of variance, coefficient of determination and $F$-test for local polynomial regressionOct 27 2008This paper provides ANOVA inference for nonparametric local polynomial regression (LPR) in analogy with ANOVA tools for the classical linear regression model. A surprisingly simple and exact local ANOVA decomposition is established, and a local R-squared ... More
Delay Sensitive Communications over Cognitive Radio NetworksJan 15 2012Supporting the quality of service of unlicensed users in cognitive radio networks is very challenging, mainly due to dynamic resource availability because of the licensed users' activities. In this paper, we study the optimal admission control and channel ... More
Cooperative Wi-Fi Deployment: A One-to-Many Bargaining FrameworkAug 05 2016We study the cooperation of the mobile network operator (MNO) and the venue owners (VOs) on the public Wi-Fi deployment. We consider a one-to-many bargaining framework, where the MNO bargains with VOs sequentially to determine where to deploy Wi-Fi and ... More
Competition of Wireless Providers for Atomic UsersJul 07 2010We study a problem where wireless service providers compete for heterogenous wireless users. The users differ in their utility functions as well as in the perceived quality of service of individual providers. We model the interaction of an arbitrary number ... More
Enabling Edge Cooperation in Tactile Internet via 3C Resource SharingSep 22 2018Tactile Internet often requires (i) the ultra-reliable and ultra-responsive network connection and (ii) the proactive and intelligent actuation at edge devices. A promising approach to address these two requirements is to enable mobile edge devices to ... More
Safe Carrier Sensing Range in CSMA Network under Physical Interference ModelJan 23 2009In this paper, we study the setting of carrier-sensing range in 802.11 networks under the (cumulative) physical interference model. Specifically, we identify a carrier-sensing range that will prevent collisions in 802.11 networks due to carrier-sensing ... More
On Competing Wireless Service ProvidersMar 11 2009We consider a situation where wireless service providers compete for heterogenous wireless users. The users differ in their willingness to pay as well as in their individual channel gains. We prove existence and uniqueness of the Nash equilibrium for ... More
Intrinsically discrete channel-gating dynamics at small membrane patch area for the Hodgkin-Huxley neuronsMar 04 2013Mar 17 2013This paper has been withdrawn by the author due to some incorrect presentation in the results and discussion part.
An Integrated Spectrum and Information Market for Green Cognitive CommunicationsMar 16 2016A database-assisted TV white space network can achieve the goal of green cognitive communication by effectively reducing the energy consumption in cognitive communications. The success of such a novel network relies on a proper business model that provides ... More
Contract-Based Cooperative Spectrum SharingFeb 21 2011Providing proper economic incentives is essential for the success of dynamic spectrum sharing. Cooperative spectrum sharing is one effective way to achieve this goal. In cooperative spectrum sharing, secondary users (SUs) relay traffics for primary users ... More
Pricing for local and global WiFi marketsJul 16 2014This paper analyzes two pricing schemes commonly used in WiFi markets: the flat-rate and the usage-based pricing. The flat-rate pricing encourages the maximum usage, while the usage-based pricing can flexibly attract more users especially those with low ... More
An Auction Approach to Distributed Power Allocation for Multiuser Cooperative NetworksOct 17 2012This paper studies a wireless network where multiple users cooperate with each other to improve the overall network performance. Our goal is to design an optimal distributed power allocation algorithm that enables user cooperation, in particular, to guide ... More
Capacity Allocation and Pricing Strategies for Wireless Femtocell ServicesMay 06 2012Indoor cell phone users often suffer from poor connectivity. One promising solution, femtocell technology, has been rapidly developed and deployed over the past few years. One of the biggest challenges for femtocell deployment is lack of a clear business ... More
MAPEL: Achieving Global Optimality for a Non-convex Wireless Power Control ProblemMay 17 2008Jun 10 2008Achieving weighted throughput maximization (WTM) through power control has been a long standing open problem in interference-limited wireless networks. The complicated coupling between the mutual interferences of links gives rise to a non-convex optimization ... More
Time and Location Aware Mobile Data PricingNov 12 2015Mobile users' correlated mobility and data consumption patterns often lead to severe cellular network congestion in peak hours and hot spots. This paper presents an optimal design of time and location aware mobile data pricing, which incentivizes users ... More
Effective Carrier Sensing in CSMA Networks under Cumulative InterferenceDec 11 2009This paper proposes and investigates the concept of a safe carrier-sensing range that can guarantee interference safe (also termed hidden-node-free) transmissions in CSMA networks under the cumulative interference model. Compared with the safe carrier-sensing ... More
Optimal Pricing and Admission Control for Heterogeneous Secondary UsersApr 07 2016This paper studies how to maximize a spectrum database operator's expected revenue in sharing spectrum to secondary users, through joint pricing and admission control of spectrum resources. A unique feature of our model is the consideration of the stochastic ... More
Investment and Pricing with Spectrum Uncertainty: A Cognitive Operator's PerspectiveDec 16 2009Jun 28 2010This paper studies the optimal investment and pricing decisions of a cognitive mobile virtual network operator (C-MVNO) under spectrum supply uncertainty. Compared with a traditional MVNO who often leases spectrum via long-term contracts, a C-MVNO can ... More
Competition with Dynamic Spectrum LeasingMar 29 2010This paper presents a comprehensive analytical study of two competitive cognitive operators' spectrum leasing and pricing strategies, taking into account operators' heterogeneity in leasing costs and users' heterogeneity in transmission power and channel ... More
Exploring Time Flexibility in Wireless Data PlansAug 31 2018Oct 04 2018Recently, the mobile network operators (MNOs) are exploring more time flexibility with the rollover data plan, which allows the unused data from the previous month to be used in the current month. Motivated by this industry trend, we propose a general ... More
MINE GOLD to Deliver Green Cognitive CommunicationsSep 14 2015Geo-location database-assisted TV white space network reduces the need of energy-intensive processes (such as spectrum sensing), hence can achieve green cognitive communication effectively. The success of such a network relies on a proper business model ... More
Reply to "Local Filtering Fundamentally Against Wide Spectrum"Sep 02 2014After carefully studying the comment by Wang et al. (arXiv:1408.6420), we found it includes several mistakes and unjustified statements and Wang et al. lack very basic knowledge of dislocations. Moreover, there is clear evidence indicating that Wang et ... More
Competitive Charging Station Pricing for Plug-in Electric VehiclesNov 24 2015Nov 28 2015This paper considers the problem of charging station pricing and plug-in electric vehicles (PEVs) station selection. When a PEV needs to be charged, it selects a charging station by considering the charging prices, waiting times, and travel distances. ... More
Spectrum Investment under Uncertainty: A Behavioral Economics PerspectiveAug 29 2016In this paper, we study a virtual wireless operator's spectrum investment problem under spectrum supply uncertainty. To obtain enough spectrum resources to meet its customer demands, the virtual operator can either sense for the temporarily unused spectrum ... More
Two-sided Matching Based Cooperative Spectrum SharingApr 13 2016Dynamic spectrum access (DSA) can effectively improve the spectrum efficiency and alleviate the spectrum scarcity, by allowing unlicensed secondary users (SUs) to access the licensed spectrum of primary users (PUs) opportunistically. Cooperative spectrum ... More
Providing Long-Term Participation Incentive in Participatory SensingJan 11 2015Feb 24 2016Providing an adequate long-term participation incentive is important for a participatory sensing system to maintain enough number of active users (sensors), so as to collect a sufficient number of data samples and support a desired level of service quality. ... More
HySIM: A Hybrid Spectrum and Information Market for TV White Space NetworksJan 11 2015Feb 24 2016We propose a hybrid spectrum and information market for a database-assisted TV white space network, where the geo-location database serves as both a spectrum market platform and an information market platform. We study the inter- actions among the database ... More
Spectrum Reservation Contract Design in TV White Space NetworksNov 02 2015In this paper, we study a broker-based TV white space market, where unlicensed white space devices (WSDs) purchase white space spectrum from TV licensees via a third-party geo-location database (DB), which serves as a spectrum broker, reserving spectrum ... More
Hybrid metal-dielectric ring resonators for optical magnetic metamaterials down to ultraviolet rangeDec 02 2010Oct 02 2012In this paper, we derive a model from Maxwell equations for the magnetic resonance of split-ring resonators. Using this model we revisit the scaling of split-ring resonators. Inspired by our model, we propose a new type of split-hybrid metal-dielectric ... More
Blow-up of a critical Sobolev norm for energy-subcritical and energy-supercritical wave equationsMar 15 2017This work concerns the semilinear wave equation in three space dimensions with a power-like nonlinearity which is greater than cubic, and not quintic (i.e. not energy-critical). We prove that a scale-invariant Sobolev norm of any non-scattering solution ... More
Secure Degrees of Freedom Regions of Multiple Access and Interference Channels: The Polytope StructureApr 29 2014The sum secure degrees of freedom (s.d.o.f.) of two fundamental multi-user network structures, the K-user Gaussian multiple access (MAC) wiretap channel and the K-user interference channel (IC) with secrecy constraints, have been determined recently as ... More
Power-Delay Tradeoff with Predictive Scheduling in Integrated Cellular and Wi-Fi NetworksDec 20 2015Dec 29 2015The explosive growth of global mobile traffic has lead to a rapid growth in the energy consumption in communication networks. In this paper, we focus on the energy-aware design of the network selection, subchannel, and power allocation in cellular and ... More
Dynamic Profit Maximization of Cognitive Mobile Virtual Network OperatorDec 17 2012We study the profit maximization problem of a cognitive virtual network operator in a dynamic network environment. We consider a downlink OFDM communication system with various network dynamics, including dynamic user demands, uncertain sensing spectrum ... More
Distributed and Optimal Reduced Primal-Dual Algorithm for Uplink OFDM Resource AllocationDec 22 2010Orthogonal Frequency Division Multiplexing (OFDM) is the key component of many emerging broadband wireless access standards. The resource allocation in OFDM uplink, however, is challenging due to heterogeneity of users' Quality of Service requirements, ... More
Performance Bound Analysis for Crowdsourced Mobile Video StreamingMay 21 2018Adaptive bitrate (ABR) streaming enables video users to adapt the playing bitrate to the real-time network conditions to achieve the desirable quality of experience (QoE). In this work, we propose a novel crowdsourced streaming framework for multi-user ... More
Multi-User Cooperative Mobile Video Streaming: Performance Analysis and Online Mechanism DesignMay 21 2018Adaptive bitrate streaming enables video users to adapt their playing bitrates to the real-time network conditions, hence achieving the desirable quality-of-experience (QoE). In a multi-user wireless scenario, however, existing single-user based bitrate ... More
Scalable Mobile Crowdsensing via Peer-to-Peer Data SharingMay 15 2017Mobile crowdsensing (MCS) is a new paradigm of sensing by taking advantage of the rich embedded sensors of mobile user devices. However, the traditional server-client MCS architecture often suffers from the high operational cost on the centralized server ... More
A Game-Theoretic Analysis of User Behaviors in Crowdsourced Wireless Community NetworksMar 05 2015Feb 24 2016A crowdsourced wireless community network can effectively alleviate the limited coverage issue of Wi-Fi access points (APs), by encouraging individuals (users) to share their private residential Wi-Fi APs with each other. This paper presents the first ... More
Incentive Design and Market Evolution of Mobile User-Provided NetworksFeb 23 2015Apr 19 2015An operator-assisted user-provided network (UPN) has the potential to achieve a low cost ubiquitous Internet connectivity, without significantly increasing the network infrastructure investment. In this paper, we consider such a network where the network ... More
Critical exponents of finite temperature chiral phase transition in soft-wall AdS/QCD modelsOct 16 2018Criticality of chiral phase transition at finite temperature is investigated in a soft-wall AdS/QCD model with $SU_L(N_f)\times SU_R(N_f)$ symmetry, especially for $N_f=2,3$ and $N_f=2+1$. It is shown that in quark mass plane($m_{u/d}-m_s$) chiral phase ... More
Auction-based Resource Allocation for Multi-relay Asynchronous Cooperative NetworksJan 20 2008Resource allocation is considered for cooperative transmissions in multiple-relay wireless networks. Two auction mechanisms, SNR auctions and power auctions, are proposed to distributively coordinate the allocation of power among multiple relays. In the ... More
Auction-Based Coopetition between LTE Unlicensed and Wi-FiSep 07 2016Nov 08 2016Motivated by the recent efforts in extending LTE to the unlicensed spectrum, we propose a novel spectrum sharing framework for the coopetition (i.e., cooperation and competition) between LTE and Wi-Fi in the unlicensed band. Basically, the LTE network ... More
Congestion-Aware Distributed Network Selection for Integrated Cellular and Wi-Fi NetworksMar 01 2017Intelligent network selection plays an important role in achieving an effective data offloading in the integrated cellular and Wi-Fi networks. However, previously proposed network selection schemes mainly focused on offloading as much data traffic to ... More
Distributed Time-Sensitive Task Selection in Mobile CrowdsensingMar 20 2015With the rich set of embedded sensors installed in smartphones and the large number of mobile users, we witness the emergence of many innovative commercial mobile crowdsensing applications that combine the power of mobile technology with crowdsourcing ... More
Economic Analysis of Crowdsourced Wireless Community NetworksAug 31 2016Crowdsourced wireless community networks can effectively alleviate the limited coverage issue of Wi-Fi access points (APs), by encouraging individuals (users) to share their private residential Wi-Fi APs with others. In this paper, we provide a comprehensive ... More
Attack Prevention for Collaborative Spectrum Sensing in Cognitive Radio NetworksSep 05 2011Collaborative spectrum sensing can significantly improve the detection performance of secondary unlicensed users (SUs). However, the performance of collaborative sensing is vulnerable to sensing data falsification attacks, where malicious SUs (attackers) ... More
Mass and Age of Red Giant Branch Stars Observed with LAMOST and \emph{Kepler}Dec 28 2017Obtaining accurate and precise masses and ages for large numbers of giant stars is of great importance for unraveling the assemblage history of the Galaxy. In this paper, we estimate masses and ages of 6940 red giant branch (RGB) stars with asteroseismic ... More
Data-Centric Mobile CrowdsensingMay 17 2017Mobile crowdsensing (MCS) is a promising sensing paradigm that leverages the diverse embedded sensors in massive mobile devices. A key objective in MCS is to efficiently schedule mobile users to perform multiple sensing tasks. Prior work mainly focused ... More
Bargaining-based Mobile Data OffloadingMay 22 2014May 26 2014The unprecedented growth of mobile data traffic challenges the performance and economic viability of today's cellular networks, and calls for novel network architectures and communication solutions. Data offloading through third-party WiFi or femtocell ... More
Proactive Demand Response for Data Centers: A Win-Win SolutionNov 02 2015In order to reduce the energy cost of data centers, recent studies suggest distributing computation workload among multiple geographically dispersed data centers, by exploiting the electricity price difference. However, the impact of data center load ... More
Parametric Prediction from Parametric AgentsFeb 24 2016We consider a problem of prediction based on opinions elicited from heterogeneous rational agents with private information. Making an accurate prediction with a minimal cost requires a joint design of the incentive mechanism and the prediction algorithm. ... More
Joint Scheduling and Power Allocations for Traffic Offloading via Dual-ConnectivitySep 30 2015With the rapid growth of mobile traffic demand, a promising approach to relieve cellular network congestion is to offload users' traffic to small-cell networks. In this paper, we investigate how the mobile users (MUs) can effectively offload traffic by ... More
Auction-Based Coopetition between LTE Unlicensed and Wi-FiSep 07 2016Motivated by the recent efforts in extending LTE to the unlicensed spectrum, we propose a novel spectrum sharing framework for the coopetition (i.e., cooperation and competition) between LTE and Wi-Fi in the unlicensed band. Basically, the LTE network ... More
Technical Report for "Incentivizing Wi-Fi Network Crowdsourcing: A Contract Theoretic Approach"Feb 26 2018Feb 28 2018Crowdsourced wireless community network enables individual users to share their private Wi-Fi access points (APs) with each other, hence can achieve a large Wi-Fi coverage with a small deployment cost via crowdsourcing. This paper presents a novel contract-based ... More
Hybrid Pricing for Mobile Collaborative Internet AccessSep 09 2018Mobile Collaborative Internet Access (MCA) enables mobile users to share their Internet through flexible tethering arrangements. This can potentially make better use of network resources. However, from a mobile network operator's (MNO's) viewpoint, it ... More
Combining Spot and Futures Markets: A Hybrid Market Approach to Dynamic Spectrum AccessMay 28 2014Jul 08 2016Dynamic spectrum access is a new paradigm of secondary spectrum utilization and sharing. It allows unlicensed secondary users (SUs) to exploit opportunistically the under-utilized licensed spectrum. Market mechanism is a widely-used promising means to ... More
Efficient and Fair Collaborative Mobile Internet AccessDec 15 2016The surging global mobile data traffic challenges the economic viability of cellular networks and calls for innovative solutions to reduce the network congestion and improve user experience. In this context, user-provided networks (UPNs), where mobile ... More
Spectrum Sharing as Network Congestion GamesDec 17 2009Dec 23 2009This paper has been withdrawn by the first author due to incomplete bibliography and incorporation of multiple formats in the same file.
Spectrum Sharing as Spatial Congestion GamesNov 24 2010In this paper, we present and analyze the properties of a new class of games - the spatial congestion game (SCG), which is a generalization of the classical congestion game (CG). In a classical congestion game, multiple users share the same set of resources ... More
Public Wi-Fi Monetization via AdvertisingSep 07 2016There has been a proliferation of public Wi-Fi hotspots that serve a significant amount of global mobile traffic today. In this paper, we propose a general Wi-Fi monetization model for public Wi-Fi hotspots deployed by venue owners (VOs), who generate ... More
Public Wi-Fi Monetization via AdvertisingSep 07 2016Feb 21 2017The proliferation of public Wi-Fi hotspots has brought new business potentials for Wi-Fi networks, which carry a significant amount of global mobile data traffic today. In this paper, we propose a novel Wi-Fi monetization model for venue owners (VOs) ... More
Low-Rank Matrix Approximations with Flip-Flop Spectrum-Revealing QR FactorizationMar 06 2018Mar 14 2018We present Flip-Flop Spectrum-Revealing QR (Flip-Flop SRQR) factorization, a significantly faster and more reliable variant of the QLP factorization of Stewart, for low-rank matrix approximations. Flip-Flop SRQR uses SRQR factorization to initialize a ... More
Randomized Complete Pivoting for Solving Symmetric Indefinite Linear SystemsSep 30 2017The Bunch-Kaufman algorithm and Aasen's algorithm are two of the most widely used methods for solving symmetric indefinite linear systems, yet they both are known to suffer from occasional numerical instability due to potentially exponential element growth ... More
Can learning from natural image denoising be used for seismic data interpolation?Feb 27 2019We propose a convolutional neural network (CNN) denoising based method for seismic data interpolation. It provides a simple and efficient way to break though the lack problem of geophysical training labels that are often required by deep learning methods. ... More
On local smoothing problems and Stein's maximal spherical meansJun 01 2016Jul 27 2017It is proved that the local smoothing conjecture for wave equations implies certain improvements on Stein's analytic family of maximal spherical means. Some related problems are also discussed.
Improved variable coefficient square functions and local smoothing of Fourier integral operatorsJan 06 2019Jan 21 2019We establish certain square function estimates for a class of oscillatory integral operators with homogeneous phase functions. These results are employed to deduce a refinement of a previous result of Mockenhaupt Seeger and Sogge \cite{MSS-jams} on the ... More
Common Electronic Origin of Superconductivity in (Li,Fe)OHFeSe Bulk Superconductor and Single-Layer FeSe/SrTiO3 FilmsMay 23 2015The mechanism of high temperature superconductivity in the iron-based superconductors remains an outstanding issue in condensed matter physics. The electronic structure, in particular the Fermi surface topology, is considered to play an essential role ... More
The Contribution of Host Galaxies to the Infrared Energy Output of $z\gtrsim5.0$ QUASARSNov 18 2015The infrared spectral energy distributions (SEDs) of $z\gtrsim 5$ quasars can be reproduced by combining a low-metallicity galaxy template with a standard AGN template. The host galaxy is represented by Haro 11, a compact, moderately low metallicity, ... More
Motivating Smartphone Collaboration in Data Acquisition and Distributed ComputingJan 26 2014This paper analyzes and compares different incentive mechanisms for a master to motivate the collaboration of smartphone users on both data acquisition and distributed computing applications. To collect massive sensitive data from users, we propose a ... More
CHAOS: an SDN-based Moving Target Defense SystemApr 05 2017The static nature of current cyber systems has made them easy to be attacked and compromised. By constantly changing a system, Moving Target Defense (MTD) has provided a promising way to reduce or move the attack surface that is available for exploitation ... More
Sustainable Incentives for Mobile Crowdsensing: Auctions, Lotteries, and Trust and Reputation SystemsJan 01 2017Feb 24 2017Proper incentive mechanisms are critical for mobile crowdsensing systems to motivate people to actively and persistently participate. This article provides an exposition of design principles of six incentive mechanisms, drawing special attention to the ... More
Emergence of Superconductivity from Fully Incoherent Normal State in an Iron-Based Superconductor (Ba$_{0.6}$K$_{0.4}$)Fe$_2$As$_2$Jan 17 2019In unconventional superconductors, it is generally believed that understanding the physical properties of the normal state is a pre-requisite for understanding the superconductivity mechanism. In conventional superconductors like niobium or lead, the ... More
Fermi Surface and Band Structure of (Ca,La)FeAs2 Superconductor from Angle-Resolved Photoemission SpectroscopyNov 23 2013The (Ca,R)FeAs2 (R=La,Pr and etc.) superconductors with a signature of superconductivity transition above 40 K possess a new kind of block layers that consist of zig-zag As chains. In this paper, we report the electronic structure of the new (Ca,La)FeAs2 ... More
Inter-Session Network Coding with Strategic Users: A Game-Theoretic Analysis of Network CodingApr 19 2009A common assumption in the existing network coding literature is that the users are cooperative and non-selfish. However, this assumption can be violated in practice. In this paper, we analyze inter-session network coding in a wired network using game ... More
Single-shot 3D structure determination of nanocrystals with femtosecond X-ray free electron laser pulsesOct 31 2013Coherent diffraction imaging (CDI) using synchrotron radiation, X-ray free electron lasers (X-FELs), high harmonic generation, soft X-ray lasers, and optical lasers has found broad applications across several disciplines. An active research direction ... More
What bipartite states are lazyFeb 03 2014Mar 26 2014A bipartite state is called lazy if the entropy rate of one subsystem is vanishing for any coupling to the other subsystem. In this paper, we provide a necessary and sufficient condition for a finite-dimensional bipartite state to be lazy, and prove that ... More
Lazy states, discordant states and entangled states for 2-qubit systemsJan 17 2014We investigate the lazy states, entangled states and discordant states for 2-qubit systems. We show that many lazy states are discordant, many lazy states are entangled, and many mixed entangled states are not lazy. With these investigations, we provide ... More
Quantifying coherence of Gaussian statesOct 10 2015Coherence arises from the superposition principle and plays a key role in quantum mechanics. Recently, Baumgratz et al. [T. Baumgratz, M. Cramer, and M. B. Plenio, Phys. Rev. Lett. 113, 140401 (2014)] established a rigorous framework for quantifying the ... More
The boundness of weighted Coxeter groups of rank 3Jul 08 2016Oct 12 2016We prove that a weighted Coxeter group (W,S,L) is bounded if the rank of W is 3.
Running Neutrino Masses, Leptonic Mixing Angles and CP-Violating Phases: From $M_{\rm Z}$ to $Λ_{\rm GUT}$Feb 02 2005Mar 25 2005We derive renormalization group equations for neutrino masses, leptonic mixing angles and CP-violating phases running at energies above the seesaw threshold, both in the Standard Model and in the Minimal Supersymmetric Standard Model extended with three ... More
Quasi-neutral limit of Euler-Poisson system of compressible fluids coupled to a magnetic fieldSep 05 2017In this paper, we consider the quasi-neutral limit of a three dimensional Euler-Poisson system of compressible fluids coupled to a magnetic field. We prove that, as Debye length tends to zero, periodic initial-value problems of the model have unique smooth ... More
On the General Kerr/CFT Correspondence in Arbitrary DimensionsFeb 19 2012We study conformal symmetries on the horizon of a general stationary and axisymmetric black hole. We find that there exist physically reasonable boundary conditions that uniquely determine a set of symmetry generators, which form one copy of the Virasoro ... More
Probing Multiparton Correlations at CEBAFAug 08 1998In this talk, I explore the possibilities of probing the multiparton correlation functions at CEBAF at its current energy and the energies with its future upgrades.
Structure functions and parton distributionsNov 27 2002In this talk, I review the status of theoretical understanding of nuclear structure functions and parton distributions and discuss the constraints on nuclear parton distributions from existing data and the global QCD analysis.
Coherence measures based on sandwiched Rényi relative entropyAug 14 2018Sep 16 2018Coherence is a fundamental ingredient for quantum physics and a key resource for quantum information theory. Baumgratz, Cramer, and Plenio established a rigorous framework (BCP framework) for quantifying coherence [T. Baumgratz, M. Cramer, and M. B. Plenio, ... More
Bilinear Kakeya-Nikodym averages of eigenfunctions on compact Riemannian surfacesFeb 22 2016Feb 23 2016We obtain an improvement of the bilinear estimates of Burq, G\'erard and Tzvetkov in the spirit of the refined Kakeya-Nikodym estimates of Blair and the second author. We do this by using microlocal techniques and a bilinear version of H\"ormander's oscillatory ... More
The Complex Structures on $S^{2n}$Aug 15 2006Dec 11 2017Let $\widetilde{\cal J}(S^{2n})$ be the set of orthogonal complex structures on $TS^{2n}$. We show that the twistor space $\widetilde{\cal J}(S^{2n})$ is a Kaehler manifold. Then we show that an orthogonal almost complex structure $J_f$ on $S^{2n}$ is ... More
The Geometry and Topology on Grassmann ManifoldsAug 03 2006This paper shows that the Grassmann Manifolds $G_{\bf F}(n,N)$ can all be imbedded in an Euclidean space $M_{\bf F}(N)$ naturally and the imbedding can be realized by the eigenfunctions of Laplacian $\triangle$ on $G_{\bf F}(n,N)$. They are all minimal ... More