We perform a detailed phase-space analysis of various phantom cosmological models, where the dark energy sector interacts with matter one. examine whether there exist late-time scaling attractors, corresponding to an accelerating universe and possessing densities same order. find that all examined although accepting stable accelerated solutions, cannot alleviate coincidence problem, unless one imposes form fine-tuning in model parameters. It seems interacting cosmology fulfill basic...

Driving is a social activity which involves endless interactions with other agents on the road. Failing to locate these and predict their possible future actions may result in serious safety hazards. Traditionally, responsibility for avoiding hazards solely drivers. With improved sensor quantity quality, modern ADAS systems are able accurately perceive location speed of nearby vehicles warn driver about potential However, predicting behavior remains challenging problem. In this paper, we...

We address the problem of optimally modifying topology a directed dynamical network to ensure structural controllability. More precisely, given structure (i.e., an existing networked infrastructure), we propose framework find minimum number edges that need be added in order render structurally controllable system. Our main contribution is twofold: first, provide full characterization all optimal modifications, and second, algorithm able solution polynomial time. illustrate validity our via...

In this paper, we study the target controllability problem of networked dynamical systems, in which are tasked to steer a subset network states towards desired objective. More specifically, derive necessary and sufficient conditions for structural linear time-invariant (LTI) systems with symmetric state matrices, such as undirected networks unknown link weights. To achieve our goal, first characterize generic rank symmetrically structured well modes any numerical realization. Subsequently,...

Nowadays, with the vigorous expansion and development of gaming video streaming techniques services, expectation users, especially mobile phone for higher quality experience is also growing swiftly. As most existing research focuses on traditional streaming, there a clear lack both subjective study objective models that are tailored assessment content. To this end, in study, we first present brand new Tencent Gaming Video dataset containing 1293 sequences encoded three different codecs....

Modern transportation system suffers from increasing passenger demand, limited vehicle supply and inefficient mobility service. Towards building an intelligent to address these issues, we propose a hierarchical framework implement strategies that is capable of allocating vehicles serve passengers in different locations based on supply. In the higher hierarchy, optimize idle mileage induced by rebalancing across regions using receding horizon control towards current predicted future requests....

In this article, we study the <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">target controllability problem</i> of networked dynamical systems,in which are tasked to steer a subset network nodes toward desired objective. More specifically, derive necessary and sufficient conditions for xmlns:xlink="http://www.w3.org/1999/xlink">structural target controllability</i> linear time-invariant (LTI) systems with symmetric state matrices, such as...

We examine the effectiveness of weak gravity conjecture in constraining dark energy by comparing with observations. For general models plausible phenomenological interactions between sectors, we find that although can constrain energy, constraint is looser than from

We consider the problem of simultaneously controlling propagation several diseases in a weighted, directed, multilayer contact network by distributing protection resources throughout different layers. analyze multi-disease extension standard Susceptible-Infected-Susceptible (SIS) epidemic model when individuals present levels susceptibility to diseases. In this paper, we assume that agency has finite budget invest on antidotes, each one them targeting disease, and need find optimal...

The extended holographic dark energy model with the Hubble horizon as infrared cutoff avoids problem of circular reasoning model. Unfortunately, it is hit no-go theorem. In this paper, we consider a potential, $V(\phi)$, for Brans-Dicke scalar field. With addition potential field, using viable model, and has dominated attractor solution.

Metaverse is a multidimensional virtual world that integrates digital twin space technology. It an interactive and integrative process with the physical world, involving virtualization digitization of real world. The high demands metaverse on transmission latency, processing speed, security pose significant challenges to network load. In this article, we study online distributed caching model in context metaverse. With unknown file popularity, elaborate collaborative system optimize burst...

We study the constraints on dark energy model with constant equation of state parameter w = p/ρ and holographic by using weak gravity conjecture. The combination conjecture observational data gives < -0.7 at 3σ confidence level. realized a scalar field is in swampland.

We get the same degeneracy relation between $w_0$ and $w_a$ for tachyon fields as quintessence phantom fields. Our results show that dynamics of scalar with different origins becomes indistinguishable when equation state parameter $w$ does not deviate too far away from -1, time variation $w'$ satisfies bound class models. For fields, a limit on exists due to Hubble damping we derived generic bounds classes may distinguish models in phase plane $w-w'$. The current constraints are consistent...

In this paper, we analyze the (exact) stochastic dynamics of spreading processes taking place in complex networks. The analysis is, general, very challenging since its state space grows exponentially with network size. A common approach to overcome challenge is apply moment-closure techniques, such as popular mean-field approach, approximate exact via ordinary differential equations. However, most existing techniques do not provide quantitative guarantees on quality approximation, limiting...

The recent observations of type Ia supernovae strongly support that the universe is accelerating now and decelerated in past. This may be evidence breakdown standard Friedmann equation. Instead a linear function matter density, we consider general density to modify Freidmann We propose new model which explains acceleration past deceleration. Furthermore, also gives future. $Ω_{m0}=0.46$ $z_T=0.44$.

The recent type Ia supernova data suggest that the universe is accelerating now and decelerated in past. This may provide evidence standard Friedmann equation needs to be modified. We analyze detail a new model context of modified using published by High-$z$ Supernova Search Team Cosmology Project. explains acceleration past deceleration. Furthermore, also gives future.

While current fairness-driven I/O schedulers are successful in allocating equal time/resource share to concurrent workloads, they ignore the request queueing or reordering storage device layer, such as Native Command Queueing (NCQ). As a result, requests of different workloads cannot have an chance enter NCQ (NCQ conflict) and fairness is violated. We address this issue by providing first systematic empirical analysis on how affects SSD utilization accordingly proposing NCQ-aware scheduling...

In this paper, we consider the structural stabilizability problem of undirected networks. More specifically, are tasked to infer an network from its underlying topology, where networks modeled as continuous-time linear time-invariant (LTI) systems involving symmetric state matrices. Firstly, derive a graph-theoretic necessary and sufficient condition for Then, propose method determine maximum dimension stabilizable subspace solely based on structure. Based these results, one hand, study...

The assembled substation is a construction that "resource-saving, environment-friendly, and industrialized" through prefabrication on-site installation. Taking the Xuancheng Xinhang 110kV project in Anhui as an example, this paper studies standardization development of industrial buildings substations at home abroad, points out problems existing buildingpractice substation, puts forward relevant suggestions for these problems.

In this paper, we analyse the (exact) stochastic dynamics of spreading processes in complex networks order to design strategies eradicate spread. A common approach for analysing models is apply first-order moment-closure techniques, such as mean-field approximations. However, these techniques do not provide quantitative guarantees on quality approximation. propose a general technique with based recent results relating truncated moment problem semidefinite programming. As particular...