Jamming Assisted Covert Wireless Communication in Multi-Channel Systems

This paper investigates the jammerassisted multi-channel covert wireless communication(CWC)by exploiting the randomness of sub-channel selection to confuse the warden.In particular,we propose two sub-channel selection transmission schemes,named random sub-channel selection(RSS)scheme and maximum sub-channel selection(MSS)scheme,to enhance communication covertness.For each proposed scheme,we first derive closed-form expressions of the transmission outage probability(TOP),the average effective rate,and the minimum average detection error probability(DEP).Then,the average effective covert rate(ECR)is maximized by jointly optimizing the transmit power at the transmitter and the number of sub-channels.Numerical results show that there is an optimal value of the number of sub-channels that maximizes the average ECR.We also find that to achieve the maximum average ECR,a larger number of subchannels are needed facing a stricter covertness constraint.

Diagnosing quantum crosstalk in superconducting quantum chips by using out-of-time-order correlators

Performance of a scalable quantum processor critically relies on minimizing crosstalk and unwanted interactions within the system,as it is vital for parallel controlled operations on qubits.We present a protocol not only to provide information about residual coupling but also to effectively discriminate it from the influence of classical crosstalk.Our approach utilizes out-of-time-order correlators(OTOCs)as a signal of quantum crosstalk,making it applicable to various coupling forms and scalable architectures.To demonstrate the effectiveness of our protocol,we provide a theoretical analysis and simulate its implementation in coupled superconducting qubits.

Dynamical behavior of memristor-coupled heterogeneous discrete neural networks with synaptic crosstalk

Synaptic crosstalk is a prevalent phenomenon among neuronal synapses,playing a crucial role in the transmission of neural signals.Therefore,considering synaptic crosstalk behavior and investigating the dynamical behavior of discrete neural networks are highly necessary.In this paper,we propose a heterogeneous discrete neural network(HDNN)consisting of a three-dimensional KTz discrete neuron and a Chialvo discrete neuron.These two neurons are coupled mutually by two discrete memristors and the synaptic crosstalk is considered.The impact of crosstalk strength on the firing behavior of the HDNN is explored through bifurcation diagrams and Lyapunov exponents.It is observed that the HDNN exhibits different coexisting attractors under varying crosstalk strengths.Furthermore,the influence of different crosstalk strengths on the synchronized firing of the HDNN is investigated,revealing a gradual attainment of phase synchronization between the two discrete neurons as the crosstalk strength decreases.

Auxin-brassinosteroid crosstalk:Regulating rice plant architecture and grain shape

Rice(Oryza sativa)plant architecture and grain shape,which determine grain quality and yield,are modulatedby auxin and brassinosteroid via regulation of cell elongation and proliferation.We review the signaltransduction of these hormones and the crosstalk between their signals on the regulation of rice plantarchitecture and grain shape.

A novel multi-channel porous structure facilitating mass transport towards highly efficient alkaline water electrolysis

An advantageous porous architecture of electrodes is pivotal in significantly enhancing alkaline water electrolysis(AWE)efficiency by optimizing the mass transport mechanisms.This effect becomes even more pronounced when aiming to achieve elevated current densities.Herein,we employed a rapid and scalable laser texturing process to craft novel multi-channel porous electrodes.Particularly,the obtained electrodes exhibit the lowest Tafel slope of 79 mV dec^(-1)(HER)and 49 mV dec^(-1)(OER).As anticipated,the alkaline electrolyzer(AEL)cell incorporating multi-channel porous electrodes(NP-LT30)exhibited a remarkable improvement in cell efficiency,with voltage drops(from 2.28 to 1.97 V)exceeding 300 mV under 1 A cm^(-1),compared to conventional perforated Ni plate electrodes.This enhancement mainly stemmed from the employed multi-channel porous structure,facilitating mass transport and bubble dynamics through an innovative convection mode,surpassing the traditional convection mode.Furthermore,the NP-LT30-based AEL cell demonstrated exceptional durability for 300 h under 1.0 A cm^(-2).This study underscores the capability of the novel multi-channel porous electrodes to expedite mass transport in practical AWE applications.

Design of Cold-Junction Compensation and Disconnection Detection Circuits of Various Thermocouples and Implementation of Multi-Channel Interfaces Using Them-A Secondary Publication

Cold-junction compensation(CJC)and disconnection detection circuit design of various thermocouples(TC)and multi-channel TC interface circuits were designed.The CJC and disconnection detection circuit consists of a CJC semiconductor device,an instrumentation amplifier(IA),two resistors,and a diode for disconnection detection.Based on the basic circuit,a multi-channel interface circuit was also implemented.The CJC was implemented using compensation semiconductor and IA,and disconnection detection was detected by using two resistors and a diode so that IA input voltage became-0.42 V.As a result of the experiment using R-type TC,the error of the designed circuit was reduced from 0.14 mV to 3μV after CJC in the temperature range of 0°C to 1400°C.In addition,it was confirmed that the output voltage of IA was saturated from 88 mV to-14.2 V when TC was disconnected from normal.The output voltage of the designed circuit was 0 V to 10 V in the temperature range of 0°C to 1400°C.The results of the 4-channel interface experiment using R-type TC were almost identical to the CJC and disconnection detection results for each channel.The implemented multi-channel interface has a feature that can be applied equally to E,J,K,T,R,and S-type TCs by changing the terminals of CJC semiconductor devices and adjusting the IA gain.

Development of multi-channel observation and inversion for IP electrical sounding method

In order to improve the exploration effect of deep non-ferrous mineral resources, multi-channel observation methods for induced polarization （IP） electrical sounding data and their inversion imaging technology are studied. First of all, four multi-channel observation methods are developed based on conventional IP electrical method, namely three-electrode and four-electrode arrays of unilateral and bilateral current transmitting. Then the maximum smoothness constrained inversion method of the least squares sense for IP electrical sounding data is proposed, and the inversion software is programmed. Finally, the simulation and inversion results of geo-electrical model for the proposed observation methods are analyzed. And the comparison results show that three-electrode array of bilateral current transmitting gives the best result, but the intensity in field work is larger than others; unilateral three-electrode and four-electrode arrays give the better results. Taking detection results and convenience of field exploration work into consideration, these two methods are more suitable for practical application; bilateral observation method of four-electrode array is not suitable for the detection of the steep ore bodies.

PGC-1α介导的“肌脑Crosstalk”与运动的抗抑郁机制——基于整合生物学的反思与展望

针对抑郁症的研究表明,骨骼肌过氧化物酶体增殖活化受体γ辅助活化因子1α(PGC-1α)通过基因转录调控的途径改善外周色氨酸代谢、减轻中枢炎症反应、增加脑源性神经营养因子的表达,从而远程作用于脑组织发挥抗抑郁效应。基于整合生物学理论,综述骨骼肌PGC-1α在运动抗抑郁中的重要作用及其介导机制,提出PGC-1α介导的外周—中枢"对话"模式。针对其他神经退行性疾病的运动干预作用,提出"肌脑Crosstalk"的可能途径。

Wnt与其他信号通路在胚胎发育过程中的crosstalk

在胚胎发育过程中,Wnt信号通路扮演了非常重要的角色。而很多情况下它都是与FGF、Notch、Hedgehog、TGF-β等其他几条重要的信号通路通过大量的crosstalk,相互协同来发挥作用的。对于非洲爪蟾胚胎早期发育的研究表明,FGF信号可以诱导产生p90^(rsk),一种核糖体S6蛋白激酶,而这种激酶可以磷酸化GSK-3β的丝氨酸-9残基,导致GSK-3β失活,并以此来调节Wnt信号,共同控制胚胎发育过程。

Progress and Research on Interconnects Crosstalk in Deep Submicron Technology

As develops in deep sub micron designs,the interconnect crosstalk becomes much more serious.Espe cially, the coupling inductance can not be ignored in gigahertz designs.So shield insertion is an efficient technique to reduce the inductive noise.In this paper,the characteristics of on chip mutual inductance (as well as self) for coplanar,micro stripline and stripline structures are introduced first.Then base on the coplanar interconnect structures,the effective coupling K eff model and the RLC explicit noise model are proposed respectively.The results of experiments show that these two models both have high fidelity.

Design of multi-channel data acquisition system based on LabVIEW and NI PXI-5105

A data acquisition system based on LabVIEW and NI PXI-5105 is presented for multi-channel data acquisition. It can realize the functions of parameter setting, data acquisition and storage, waveform display and data analysis using LabVIEW and NI-SCOPE device driver. The advantages of the system are that the setting is convenient, the operation is easy, the interface is friendly and the functions are practical. The experiment results show that the system has good stability and high reliability and is a powerful tool for multi-channel data acquisition.

A maximum-independent-set-based channel allocation algorithm for multi-channel wireless networks

A channel allocation algorithm based on the maximum independent set is proposed to decrease network conflict and improve network performance. First, a channel allocation model is formulated and a series of the maximum independent sets （MISs） are obtained from a contention graph by the proposed approximation algorithm with low complexity. Then, a weighted contention graph is obtained using the number of contention vertices between two MISs as a weighted value. Links are allocated to channels by the weighted contention graph to minimize conflicts between independent sets. Finally, after channel allocation, each node allocates network interface cards （NICs） to links that are allocated channels according to the queue lengths of NICs. Simulations are conducted to evaluate the proposed algorithm. The results show that the proposed algorithm significantly improves the network throughput and decreases the end to end delay.

A Novel Interconnect Crosstalk Parallel RLC Analyzable Model Based on the 65nm CMOS Process

Based on the 65nm CMOS process,a novel parallel RLC coupling interconnect analytical model is presented synthetically considering parasitical capacitive and parasitical inductive effects. Applying function approximation and model order-reduction to the model, we derive a closed-form and time-domain waveform for the far-end crosstalk of a victim line under ramp input transition. For various interconnect coupling sizes, the proposed RLC coupling analytical model enables the estimation of the crosstalk voltage within 2.50% error compared with Hspice simulation in a 65nm CMOS process. This model can be used in computer-aided-design of nanometer SOCs.

基于Multi-Radio Multi-Channel传感器网络无冲突信道分配算法的研究

为降低通信冲突和信道干扰,对Mult-i Radio Mult-i Channel传感器网络无冲突信道进行研究,结果证实在网络通信半径大于3倍的网络最大功率通信半径的前提下,Sensor节点规模满足2倍网络功率级数加1的环境下,网络无冲突信道分配的信道数达到网络信道冲突图的最大值。文章通过对无冲突信道算法的运用,最终证实其可以有效地提高传感器网络的工作效率,大幅度提升网络的吞吐量。

Tumor-stroma crosstalk对肝细胞癌中肝星状细胞氨基酸代谢水平的影响

目的探讨tumor-stroma crosstalk对肝星状细胞(HSC)氨基酸代谢的影响。方法分别培养人肝癌细胞系HepG2、Hep3B、Huh7,以及LX-2 HSC。分别使用LX-2 HSC条件培养基(LX2-CM)和HepG2、Hep3B、Huh7肝癌细胞混合条件培养基(Hep-CM)培养HSC,并收集细胞上清,应用氨基酸分析仪检测细胞上清氨基酸谱变化。计量资料组间比较采用t检验。结果HSC氨基酸代谢水平改变情况,与对照组(LX2-CM)相比,实验组(Hep-CM)上清中瓜氨酸(t=3. 426,P=0. 027)、缬氨酸(t=2. 892,P=0. 045)、异亮氨酸(t=4. 224,P=0. 013)、亮氨酸(t=4. 150,P=0. 014)、酪氨酸(t=3. 556,P=0. 024)、苯丙氨酸(t=4. 023,P=0. 016)、赖氨酸(t=3. 369,P=0. 028)水平降低,差异均有统计学意义。结论肿瘤微环境中,tumor-stroma crosstalk可以影响HSC的氨基酸代谢水平,这种改变可能反过来促使肝癌细胞更加适应低氧微环境。

Crosstalk Estimation and Optimization in Deep Sub-Micron VLSI

RLC model is used to estimate the coupling noise between interconnect wires and make some analysis through the simulation result. Based on the analysis conclusion,some algorithms are developed to adjust the rou ting result with crosstalk constraint.

运动如何调控“肌-骨”Crosstalk分泌相关因子表达介导2型糖尿病的骨代谢

背景:2型糖尿病是因能量代谢紊乱导致的疾病。肌肉和骨骼在运动刺激条件下,通过其内分泌功能参与机体的能量代谢调控。目前,相关"肌-骨"Crosstalk介导运动调控2型糖尿病骨代谢作用机制的研究较少。目的:通过分析运动如何调控"肌-骨"Crosstalk分泌相关因子的表达水平,并作用于骨组织的病理原因,探讨基于"肌-骨"Crosstalk运动介导2型糖尿病骨代谢的作用机制。方法:检索知网(CNKI)、万方及PubMed等数据库2012年至2021年近10年的相关文献;中英文检索词为:运动,2型糖尿病,骨代谢,"肌-骨"Crosstalk,肌肉因子和exercise,type 2 diabetes mellitus,bone metabolism,"muscle-bone"Crosstalk,muscle factor。经过筛选后对纳入的50篇相关文献进行了分析探讨。结果与结论:肌肉骨骼中的生物活性因子,一部分以内分泌方式作用于骨骼,如肌肉生长抑制素(Myostatin)、骨形态发生蛋白和肌肉素等;另一部分以旁分泌方式作用于骨骼,如胰岛素样生长因子1、白细胞介素6和鸢尾素等,参与骨代谢调节,平衡骨组织中成骨细胞的骨形成和破骨细胞的骨吸收,成为运动介导肌骨系统的信使因子。运动是调控能量代谢的重要手段,其介导的内部刺激变化能够引发肌细胞和骨细胞的信号应答,激活Wnt、BMP/Smads、转化生长因子β等信号通路,从而调节肌肉骨骼系统的内分泌功能,促进代谢适应,影响2型糖尿病骨代谢。

Crosstalk network among multiple inflammatory mediators in liver fibrosis

Liver fibrosis is the common pathological basis of all chronic liver diseases,and is the necessary stage for the progression of chronic liver disease to cirrhosis.As one of pathogenic factors,inflammation plays a predominant role in liver fibrosis via communication and interaction between inflammatory cells,cytokines,and the related signaling pathways.Damaged hepatocytes induce an increase in proinflammatory factors,thereby inducing the development of inflammation.In addition,it has been reported that inflammatory response related signaling pathway is the main signal transduction pathway for the development of liver fibrosis.The crosstalk regulatory network leads to hepatic stellate cell activation and proinflammatory cytokine production,which in turn initiate the fibrotic response.Compared with the past,the research on the pathogenesis of liver fibrosis has been greatly developed.However,the liver fibrosis mechanism is complex and many pathways involved need to be further studied.This review mainly focuses on the crosstalk regulatory network among inflammatory cells,cytokines,and the related signaling pathways in the pathogenesis of chronic inflammatory liver diseases.Moreover,we also summarize the recent studies on the mechanisms underlying liver fibrosis and clinical efforts on the targeted therapies against the fibrotic response.

基于“脾肾互赞”理论探讨失重对“肌骨crosstalk”的影响

肾寄先天,脾寄后天,先后天相合,乃为一身精之所成。骨肉相连,肉引骨动方能行远。天外施力空浮,骨肉解息,久之废退,发为痿证。肾主骨,脾主肉,脾肾相滋则骨肉相生,痿发于骨,骨败而空,肉遂病矣,其行生阻;痿发于肉,肉败而软,未能携骨而动,日久骨僵,其行乃废。文章基于脾肾互赞理论,对失重造成肌肉骨骼痿废的病因病机作以论述,阐释骨肉为病,首探脾肾,脾肾得安,骨肉皆安的内在机理。

Gut-lung crosstalk in pulmonary involvement with inflammatory bowel diseases

Pulmonary abnormalities,dysfunction or hyper-reactivity occurs in association with inflammatory bowel disease(IBD) more frequently than previously recognized.Emerging evidence suggests that subtle inflammation exists in the airways among IBD patients even in the absence of any bronchopulmonary symptoms,and with normal pulmonary functions. The pulmonary impairment is more pronounced in IBD patients with active disease than in those in remission. A growing number of case reports show that the IBD patients develop rapidly progressive respiratory symptoms after colectomy,with failure to isolate bacterial pathogens on repeated sputum culture,and often request oral corticosteroid therapy. All the above evidence indicates that the inflammatory changes in both the intestine and lung during IBD. Clinical or subclinical pulmonary inflammation accompanies the main inflammation of the bowel.Although there are clinical and epidemiological reports of chronic inflammation of the pulmonary and intestinal mucosa in IBD,the detailed mechanisms of pulmonaryintestinal crosstalk remain unknown. The lung has no anatomical connection with the main inflammatory site of the bowel. Why does the inflammatory process shift from the gastrointestinal tract to the airways? The clinical and subclinical pulmonary abnormalities,dysfunction,or hyper-reactivity among IBD patients need further evaluation. Here,we give an overview of the concordance between chronic inflammatory reactions in the airways and the gastrointestinal tract. A better understanding of the possible mechanism of the crosstalk among the distant organs will be beneficial in identifying therapeutic strategies for mucosal inflammatory diseases such as IBD and allergy.