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Tuning the diffusion constant to optimize the readout of positional information of spatial concentration patterns
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作者 江嘉杰 罗春雄 刘峰 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第8期579-586,共8页
Positional information encoded in spatial concentration patterns is crucial for the development of multicellular organisms.However,it is still unclear how such information is affected by the physically dissipative dif... Positional information encoded in spatial concentration patterns is crucial for the development of multicellular organisms.However,it is still unclear how such information is affected by the physically dissipative diffusion process.Here we study one-dimensional patterning systems with analytical derivation and numerical simulations.We find that the diffusion constant of the patterning molecules exhibits a nonmonotonic effect on the readout of the positional information from the concentration patterns.Specifically,there exists an optimal diffusion constant that maximizes the positional information.Moreover,we find that the energy dissipation due to the physical diffusion imposes a fundamental upper limit on the positional information. 展开更多
关键词 pattern formation positional information mutual information DIFFUSION
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Mutual Information Maximization via Joint Power Allocation in Integrated Sensing and Communications System
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作者 Jia Zhu Junsheng Mu +1 位作者 Yuanhao Cui Xiaojun Jing 《China Communications》 SCIE CSCD 2024年第2期129-142,共14页
In this paper, we focus on the power allocation of Integrated Sensing and Communication(ISAC) with orthogonal frequency division multiplexing(OFDM) waveform. In order to improve the spectrum utilization efficiency in ... In this paper, we focus on the power allocation of Integrated Sensing and Communication(ISAC) with orthogonal frequency division multiplexing(OFDM) waveform. In order to improve the spectrum utilization efficiency in ISAC, we propose a design scheme based on spectrum sharing, that is,to maximize the mutual information(MI) of radar sensing while ensuring certain communication rate and transmission power constraints. In the proposed scheme, three cases are considered for the scattering off the target due to the communication signals,as negligible signal, beneficial signal, and interference signal to radar sensing, respectively, thus requiring three power allocation schemes. However,the corresponding power allocation schemes are nonconvex and their closed-form solutions are unavailable as a consequence. Motivated by this, alternating optimization(AO), sequence convex programming(SCP) and Lagrange multiplier are individually combined for three suboptimal solutions corresponding with three power allocation schemes. By combining the three algorithms, we transform the non-convex problem which is difficult to deal with into a convex problem which is easy to solve and obtain the suboptimal solution of the corresponding optimization problem. Numerical results show that, compared with the allocation results of the existing algorithms, the proposed joint design algorithm significantly improves the radar performance. 展开更多
关键词 COEXISTENCE COMMUNICATIONS multicarrier radar mutual information spectrum sharing
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New construction of mutually unbiased bases for odd-dimensional state space
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作者 王成红 王昆 郑驻军 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第8期180-184,共5页
We study the construction of mutually unbiased bases in Hilbert space for composite dimensions d which are not prime powers.We explore the results for composite dimensions which are true for prime power dimensions.We ... We study the construction of mutually unbiased bases in Hilbert space for composite dimensions d which are not prime powers.We explore the results for composite dimensions which are true for prime power dimensions.We then provide a method for selecting mutually unbiased vectors from the eigenvectors of generalized Pauli matrices to construct mutually unbiased bases.In particular,we present four mutually unbiased bases in C^(15). 展开更多
关键词 mutually unbiased bases Hilbert space Pauli matrix quantum measurement
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Quantized Decoders that Maximize Mutual Information for Polar Codes
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作者 Zhu Hongfei Cao Zhiwei +1 位作者 Zhao Yuping Li Dou 《China Communications》 SCIE CSCD 2024年第7期125-134,共10页
In this paper,we innovatively associate the mutual information with the frame error rate(FER)performance and propose novel quantized decoders for polar codes.Based on the optimal quantizer of binary-input discrete mem... In this paper,we innovatively associate the mutual information with the frame error rate(FER)performance and propose novel quantized decoders for polar codes.Based on the optimal quantizer of binary-input discrete memoryless channels(BDMCs),the proposed decoders quantize the virtual subchannels of polar codes to maximize mutual information(MMI)between source bits and quantized symbols.The nested structure of polar codes ensures that the MMI quantization can be implemented stage by stage.Simulation results show that the proposed MMI decoders with 4 quantization bits outperform the existing nonuniform quantized decoders that minimize mean-squared error(MMSE)with 4 quantization bits,and yield even better performance than uniform MMI quantized decoders with 5 quantization bits.Furthermore,the proposed 5-bit quantized MMI decoders approach the floating-point decoders with negligible performance loss. 展开更多
关键词 maximize mutual information polar codes QUANTIZATION successive cancellation decoding
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Analytical modeling and approaches of multihelix cables incorporating with interwire mutual contacts
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作者 Zhichao ZHANG Xingzhe WANG 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2024年第9期1633-1654,共22页
This study aims to develop an analytical model based on the curve beam theory to capture the mechanical response of a multihelix cable considering the internal contact displacements.Accordingly,a double-helix cable su... This study aims to develop an analytical model based on the curve beam theory to capture the mechanical response of a multihelix cable considering the internal contact displacements.Accordingly,a double-helix cable subjected to axial tension and torsion is analyzed,and both the line and point contacts between the neighboring wires and strands are considered via an equivalent homogenized approach.Then,the proposed theoretical model is extended to a hierarchical multihelix cable with mutual contact displacements by constructing a recursive relationship between the high-and low-level multihelix structures.The global tensile stiffness and torsional stiffness of the double-helix cable are successfully evaluated.The results are validated by a finite element(FE)model,and are found to be consistent with the findings of previous studies.It is shown that the contact deformations in multihelix cables significantly affect their equivalent mechanical stiffness,and the contact displacements are remarkably enhanced as the helix angles increase.This study provides insights into the interwire/interstrand mutual contact effects on global and local responses. 展开更多
关键词 wordshierarchical multihelix cable mutual contact effect mechanical response effective stiffness
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Neurotrophins and neural stem cells in posttraumatic brain injury repair
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作者 Wenwen Guo Ke Liu +6 位作者 Yinghua Wang Xu Ge Yifan Ma Jing Qin Caiqin Zhang Ya Zhao Changhong Shi 《Animal Models and Experimental Medicine》 CAS CSCD 2024年第1期12-23,共12页
Traumatic brain injury(TBI)is the main cause of disability,mental health disorder,and even death,with its incidence and social costs rising steadily.Although different treatment strategies have been developed and test... Traumatic brain injury(TBI)is the main cause of disability,mental health disorder,and even death,with its incidence and social costs rising steadily.Although different treatment strategies have been developed and tested to mitigate neurological decline,a definitive cure for these conditions remains elusive.Studies have revealed that vari-ous neurotrophins represented by the brain-derived neurotrophic factor are the key regulators of neuroinflammation,apoptosis,blood-brain barrier permeability,neurite regeneration,and memory function.These factors are instrumental in alleviating neu-roinflammation and promoting neuroregeneration.In addition,neural stem cells(NSC)contribute to nerve repair through inherent neuroprotective and immunomodulatory properties,the release of neurotrophins,the activation of endogenous NSCs,and in-tercellular signaling.Notably,innovative research proposals are emerging to combine BDNF and NSCs,enabling them to synergistically complement and promote each other in facilitating injury repair and improving neuron differentiation after TBI.In this review,we summarize the mechanism of neurotrophins in promoting neurogen-esis and restoring neural function after TBI,comprehensively explore the potential therapeutic effects of various neurotrophins in basic research on TBI,and investigate their interaction with NSCs.This endeavor aims to provide a valuable insight into the clinical treatment and transformation of neurotrophins in TBI,thereby promoting the progress of TBI therapeutics. 展开更多
关键词 mutual effect neural stem cells neurological function NEUROTROPHINS traumatic brain injury
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Prediction of Ground Vibration Induced by Rock Blasting Based on Optimized Support Vector Regression Models
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作者 Yifan Huang Zikang Zhou +1 位作者 Mingyu Li Xuedong Luo 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第6期3147-3165,共19页
Accurately estimating blasting vibration during rock blasting is the foundation of blasting vibration management.In this study,Tuna Swarm Optimization(TSO),Whale Optimization Algorithm(WOA),and Cuckoo Search(CS)were u... Accurately estimating blasting vibration during rock blasting is the foundation of blasting vibration management.In this study,Tuna Swarm Optimization(TSO),Whale Optimization Algorithm(WOA),and Cuckoo Search(CS)were used to optimize two hyperparameters in support vector regression(SVR).Based on these methods,three hybrid models to predict peak particle velocity(PPV)for bench blasting were developed.Eighty-eight samples were collected to establish the PPV database,eight initial blasting parameters were chosen as input parameters for the predictionmodel,and the PPV was the output parameter.As predictive performance evaluation indicators,the coefficient of determination(R2),rootmean square error(RMSE),mean absolute error(MAE),and a10-index were selected.The normalizedmutual information value is then used to evaluate the impact of various input parameters on the PPV prediction outcomes.According to the research findings,TSO,WOA,and CS can all enhance the predictive performance of the SVR model.The TSO-SVR model provides the most accurate predictions.The performances of the optimized hybrid SVR models are superior to the unoptimized traditional prediction model.The maximum charge per delay impacts the PPV prediction value the most. 展开更多
关键词 Blasting vibration metaheuristic algorithms support vector regression peak particle velocity normalized mutual information
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Hybrid bonding of GaAs and Si wafers at low temperature by Ar plasma activation
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作者 Rui Huang Zhiyong Wang +3 位作者 Kai Wu Hao Xu Qing Wang Yecai Guo 《Journal of Semiconductors》 EI CAS CSCD 2024年第4期69-75,共7页
High-quality bonding of 4-inch GaAs and Si is achieved using plasma-activated bonding technology.The influence of Ar plasma activation on surface morphology is discussed.When the annealing temperature is 300℃,the bon... High-quality bonding of 4-inch GaAs and Si is achieved using plasma-activated bonding technology.The influence of Ar plasma activation on surface morphology is discussed.When the annealing temperature is 300℃,the bonding strength reaches a maximum of 6.2 MPa.In addition,a thermal stress model for GaAs/Si wafers is established based on finite element analysis to obtain the distribution of equivalent stress and deformation variables at different temperatures.The shape varia-tion of the wafer is directly proportional to the annealing temperature.At an annealing temperature of 400℃,the maximum protrusion of 4 inches GaAs/Si wafers is 3.6 mm.The interface of GaAs/Si wafers is observed to be dense and defect-free using a transmission electron microscope.The characterization of interface elements by X-ray energy dispersion spectroscopy indi-cates that the elements at the interface undergo mutual diffusion,which is beneficial for improving the bonding strength of the interface.There is an amorphous transition layer with a thickness of about 5 nm at the bonding interface.The preparation of Si-based GaAs heterojunctions can enrich the types of materials required for the development of integrated circuits,improve the performance of materials and devices,and promote the development of microelectronics technology. 展开更多
关键词 plasma-activated bonding bonding strength thermal stress model mutual diffusion
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Automatic Extraction of Medical Latent Variables from ECG Signals Utilizing a Mutual Information-Based Technique and Capsular Neural Networks for Arrhythmia Detection
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作者 Abbas Ali Hassan Fardin Abdali-Mohammadi 《Computers, Materials & Continua》 SCIE EI 2024年第10期971-983,共13页
From a medical perspective,the 12 leads of the heart in an electrocardiogram(ECG)signal have functional dependencies with each other.Therefore,all these leads report different aspects of an arrhythmia.Their difference... From a medical perspective,the 12 leads of the heart in an electrocardiogram(ECG)signal have functional dependencies with each other.Therefore,all these leads report different aspects of an arrhythmia.Their differences lie in the level of highlighting and displaying information about that arrhythmia.For example,although all leads show traces of atrial excitation,this function is more evident in lead II than in any other lead.In this article,a new model was proposed using ECG functional and structural dependencies between heart leads.In the prescreening stage,the ECG signals are segmented from the QRS point so that further analyzes can be performed on these segments in a more detailed manner.The mutual information indices were used to assess the relationship between leads.In order to calculate mutual information,the correlation between the 12 ECG leads has been calculated.The output of this step is a matrix containing all mutual information.Furthermore,to calculate the structural information of ECG signals,a capsule neural network was implemented to aid physicians in the automatic classification of cardiac arrhythmias.The architecture of this capsule neural network has been modified to perform the classification task.In the experimental results section,the proposed model was used to classify arrhythmias in ECG signals from the Chapman dataset.Numerical evaluations showed that this model has a precision of 97.02%,recall of 96.13%,F1-score of 96.57%and accuracy of 97.38%,indicating acceptable performance compared to other state-of-the-art methods.The proposed method shows an average accuracy of 2%superiority over similar works. 展开更多
关键词 Heart diseases electrocardiogram signal signal correlation mutual information capsule neural networks
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Side-Channel Leakage Analysis of Inner Product Masking
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作者 Yuyuan Li Lang Li Yu Ou 《Computers, Materials & Continua》 SCIE EI 2024年第4期1245-1262,共18页
The Inner Product Masking(IPM)scheme has been shown to provide higher theoretical security guarantees than the BooleanMasking(BM).This scheme aims to increase the algebraic complexity of the coding to achieve a higher... The Inner Product Masking(IPM)scheme has been shown to provide higher theoretical security guarantees than the BooleanMasking(BM).This scheme aims to increase the algebraic complexity of the coding to achieve a higher level of security.Some previous work unfolds when certain(adversarial and implementation)conditions are met,and we seek to complement these investigations by understanding what happens when these conditions deviate from their expected behaviour.In this paper,we investigate the security characteristics of IPM under different conditions.In adversarial condition,the security properties of first-order IPMs obtained through parametric characterization are preserved in the face of univariate and bivariate attacks.In implementation condition,we construct two new polynomial leakage functions to observe the nonlinear leakage of the IPM and connect the security order amplification to the nonlinear function.We observe that the security of IPMis affected by the degree and the linear component in the leakage function.In addition,the comparison experiments from the coefficients,signal-to-noise ratio(SNR)and the public parameter show that the security properties of the IPM are highly implementation-dependent. 展开更多
关键词 Side-channel analysis inner product masking mutual information nonlinear leakage
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Generative Multi-Modal Mutual Enhancement Video Semantic Communications
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作者 Yuanle Chen Haobo Wang +3 位作者 Chunyu Liu Linyi Wang Jiaxin Liu Wei Wu 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第6期2985-3009,共25页
Recently,there have been significant advancements in the study of semantic communication in single-modal scenarios.However,the ability to process information in multi-modal environments remains limited.Inspired by the... Recently,there have been significant advancements in the study of semantic communication in single-modal scenarios.However,the ability to process information in multi-modal environments remains limited.Inspired by the research and applications of natural language processing across different modalities,our goal is to accurately extract frame-level semantic information from videos and ultimately transmit high-quality videos.Specifically,we propose a deep learning-basedMulti-ModalMutual Enhancement Video Semantic Communication system,called M3E-VSC.Built upon a VectorQuantized Generative AdversarialNetwork(VQGAN),our systemaims to leverage mutual enhancement among different modalities by using text as the main carrier of transmission.With it,the semantic information can be extracted fromkey-frame images and audio of the video and performdifferential value to ensure that the extracted text conveys accurate semantic information with fewer bits,thus improving the capacity of the system.Furthermore,a multi-frame semantic detection module is designed to facilitate semantic transitions during video generation.Simulation results demonstrate that our proposed model maintains high robustness in complex noise environments,particularly in low signal-to-noise ratio conditions,significantly improving the accuracy and speed of semantic transmission in video communication by approximately 50 percent. 展开更多
关键词 Generative adversarial networks multi-modal mutual enhancement video semantic transmission deep learning
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Performance analysis of the mutual coupling effect on Phased Array Feeds
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作者 Kai Wang Maozheng Chen +4 位作者 Jun Ma Hao Yan Liang Cao Xuefeng Duan Jiahui Li 《Astronomical Techniques and Instruments》 CSCD 2024年第4期211-217,共7页
A phased array feed(PAF)is a type of receiving array that places phased array antennas on the focal plane of a radio telescope to expand its field of view and improve observation efficiency.Owing to the mutual couplin... A phased array feed(PAF)is a type of receiving array that places phased array antennas on the focal plane of a radio telescope to expand its field of view and improve observation efficiency.Owing to the mutual coupling effect between elements caused by a tightly arranged feed array,which changes the performance of a PAF,this paper presents a 7×7 rectangular feed array model for a 25 m reflector telescope.By adjusting the element spacings,the performance of a PAF with different spacings is comprehensively analyzed with respect to the mutual coupling effect via performance statistics and comparison.This research aims to provide a reference for the preliminary design of a related PAF. 展开更多
关键词 Reflector antenna Focal field Phased array BEAMFORMING Mutual coupling
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Complementarity in nurse-herbalism: Partnering with plants for the purpose of promoting health
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作者 Martha Mathews LIBSTER 《Journal of Integrative Nursing》 2024年第3期143-144,共2页
Complementarity is a concept that has been defined by physicist Niels Bohr as a general principle that promotes“mutual understanding and respect among diverse cultures and allows for the unity of human knowledge.”[1... Complementarity is a concept that has been defined by physicist Niels Bohr as a general principle that promotes“mutual understanding and respect among diverse cultures and allows for the unity of human knowledge.”[1]In physics,complementarity is demonstrated as the inclusion of the existence of contrasting particle and wave theories of light.Bohr suggested that complementarity could be used by other disciplines outside of physics.Complementarity in nursing is demonstrated by the integration of diverse health beliefs,philosophies,and healing practices for promoting health as greater balance in body,mind,emotion,and spirit. 展开更多
关键词 complementarity mutual OUTSIDE
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Speech at the Civilisation Lecture by Svetlana Sharenkova,Vice-President of Bulgaria-China Forum(Abstract)
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《International Understanding》 2024年第2期37-40,共4页
When we try to talk about civilisation exchanges and mutual learning between China and Bulgaria,it's easy and difficult.China boasts the most ancient civilisation in the world with an ever-lasting history of over ... When we try to talk about civilisation exchanges and mutual learning between China and Bulgaria,it's easy and difficult.China boasts the most ancient civilisation in the world with an ever-lasting history of over 5000 years.With a history of over 1300 years,Bulgaria is one of the oldest civilisations in Europe.There are three major civilisations emerging and thriving on this very land. 展开更多
关键词 mutual civil ation
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Chinese Medicine and Natural Products Guideline for Authors
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《Chinese Medicine and Natural Products》 CAS 2024年第1期F0003-F0004,共2页
1Introduction Chinese Medicine and Natural Products(CMNP)a quarterly,open-access publication that is funded officilly by 2017 Project for Enhancing International Impact of China STM Journals.CMNP is devoted to publish... 1Introduction Chinese Medicine and Natural Products(CMNP)a quarterly,open-access publication that is funded officilly by 2017 Project for Enhancing International Impact of China STM Journals.CMNP is devoted to publishing the theoretical and clinical research achievements in the field of Chinese medicine so as to promote the academic exchange of Chinese medicine,enhance mutual references between Chinese and Western medicine in medical ideas,theories and technologies,expand the international influence of Chinese medicine and advance its international development. 展开更多
关键词 funded mutual devoted
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Outbound Travel is Heating Up During Summer Vacation
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作者 Lily Wang 《China's Foreign Trade》 2024年第4期50-51,共2页
Since the second half of 2023,China have initiated mutual visa-free policies for outbound tourism with such countries as Singapore,Malaysia,Thailand and Georgia.With the continuous advancement of these visa-free polic... Since the second half of 2023,China have initiated mutual visa-free policies for outbound tourism with such countries as Singapore,Malaysia,Thailand and Georgia.With the continuous advancement of these visa-free policies,the list of outbound tourist destination countries is constantly expanding.During this summer vacation in particular,outbound tourism is gaining popularity. 展开更多
关键词 mutual initiated EXPANDING
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Chinese Medicine and Natural Products Guideline for Authors
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《Chinese Medicine and Natural Products》 CAS 2024年第2期F0003-F0004,共2页
1 Introduction Chinese Medicine and Natural Products(CMNP)a quar-terly,open-access publication that is funded officially by2017 Project for Enhancing International Impact of ChinaSTM Journals.CMNP is devoted to publis... 1 Introduction Chinese Medicine and Natural Products(CMNP)a quar-terly,open-access publication that is funded officially by2017 Project for Enhancing International Impact of ChinaSTM Journals.CMNP is devoted to publishing the theoretical and clinicalresearch achievements in the field of Chinese medicine soas to promote the academic exchange of Chinese medicine,enhance mutual references between Chinese and Westernmedicine in medical ideas,theories and technologies。 展开更多
关键词 funded mutual devoted
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CNIEVice-PresidentLi Jun Meets with FIAP President Riccardo Busi
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《International Understanding》 2024年第2期55-55,共1页
On May 11,Li Jun,Vice-President of China NGO Network for International Exchanges(CNIE)met with Riccardo Busi,President of the International Federation of Photographic Arts(FIAP).They shared views on people-to-people e... On May 11,Li Jun,Vice-President of China NGO Network for International Exchanges(CNIE)met with Riccardo Busi,President of the International Federation of Photographic Arts(FIAP).They shared views on people-to-people exchanges as well as arts and cultural communication among countries.Li said that state-to-state relations thrive when there is friendship between people,and the art of photography is an important channel to enhance mutual understanding and mutual trust among people of different countries. 展开更多
关键词 mutual PRESIDENT PHOTOGRAPHY
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The Thematic Forum on China-Hungary Belt and Road Pragmatic Cooperation Held in Budapest
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《International Understanding》 2024年第2期50-51,共2页
The Thematic Forum on China-Hungary Belt and Road Pragmatic Cooperation was held on May 2nd in Budapest,capital of Hungary.Liu Hongcai,Vice-President of the Chinese Association for International Understanding(CAFIU)sa... The Thematic Forum on China-Hungary Belt and Road Pragmatic Cooperation was held on May 2nd in Budapest,capital of Hungary.Liu Hongcai,Vice-President of the Chinese Association for International Understanding(CAFIU)said in his speech that all walks of life in China and Hungary should make great efforts to implement the important consensus between the state leaders,promote people-to-people exchanges and mutual learning among civilisation in an in-depth way,create more driving forces aiming at the future and fully leverage the advantage of multi-level cooperation platforms between the two countries,thus playing a constructive role in tackling global challenges together. 展开更多
关键词 FORUM ROAD mutual
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China-Latin America Green Cooperation under the Global Development Initiative
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作者 Cao Ting 《China International Studies》 2024年第3期73-99,共27页
The international development environment is entering a chaotic and volatile period.The world economy remains sluggish,while geopolitical conflicts,climate change,food crisis and a multitude of other challenges become... The international development environment is entering a chaotic and volatile period.The world economy remains sluggish,while geopolitical conflicts,climate change,food crisis and a multitude of other challenges become more closely intertwined and mutually reinforcing.In this context,countries across the world have been prompted to look for healthy,feasible and sustainable solutions to keep their socioeconomic development momentum on track. 展开更多
关键词 LATIN mutually PROMPT
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