There are many evolving dynamic networks in the real world, and community detection is crucial complex network analysis applications. In this paper, a consensus community-based discrete spider wasp optimization (SWO) approach proposed for problem. First, coding, initialization, updating strategies of algorithm discretized to adapt Second, concept intra-population inter-population proposed. Consensus knowledge formed by swarm summarizing current state as well past history. By maintaining...

Abstract The underground excavation work in coal mines is affected by many factors such as equipment, geological conditions, and human operations, resulting safety hazards. In the construction process of mining, it particularly important to choose scientific reasonable advanced fine detection methods. Taking complex structure Tunbao Coal Mine Xinjiang an example, view problems inability effectively advance accurately detect faults front head‐on adjust roadway slope during tunneling mine,...

Migrant workers returning home to start businesses has played a strong supporting role in promoting regional poverty alleviation and rural revitalization. How enhance return migrants’ entrepreneurial intention is of vital importance. Using survey data on migrants from many places China, this article analyzes the mechanism resilience, perception opportunity intention, moderating effect atmosphere. The results show that resilience significant positive impact intention; plays partial mediating...

To investigate the applicability and differences in wave loads dynamic response calculation principles for SFT on an entire-length scale, two numerical models of with identical dimensions parameters were established. These are employed by a 3D diffraction method based rigid-body assumptions, potential flow theory Dummy-Connection-Mass (DCM) lumped mass Morison equation while considering hydroelasticity effects. The load is presented along their calculation, which aim to explore impact...

Based on the coalbed methane development of III block in eastern edge Ordos Basin, well pattern was optimized and dynamically adjusted, according to a system engineering including three stages: pre-development design stage, site optimization stage dynamic tracking stage. The geological basis for deployment proposed parameters were during conditions have been explored from several aspects which include coal bed structure, buried depth, seam thickness, roof floor lithology, gas content,...

The article analyzed the income differences between flexibly and nonflexibly employed persons based on 2018 China Mobile Population Dynamics Monitoring Data, using OLS methods, propensity score matching (PSM), Oaxaca-Blinder decomposition. results show that of is 11.9%–23.6% higher than persons, with in individual endowment characteristics explaining 53.9% difference coefficients nonmarket factors 45.7% difference. degree two groups different industries varies; except for primary industry,...

In order to avoid the over discharge and less situations, improve coal recovery rate promote working environment of workers at fully mechanized top-coal caving face, experiments for research rock character recognition were carried on underground. Vibration signal hydraulic support tail beam rear scraper conveyor under different conditions acquired face using self-developed mine portable data recorder. The time-domain indexes vibration analyzed. Results show that variance, skewness index...

t has been a bottleneck for the application of vibration-related techniques in coal mine that vibration data cannot be acquired due to lack mining instrument. This paper discussed development portable recorder, introduced its overall scheme, as well hardware and software design detail. The developed recorder is intrinsically safety instrument based on ARM system, with features 4 channels analog input, 2GB large volume storage memory, 250kHz sampling frequency, no less than 3.5h full-payload...

In view of the demand for continuous guarantee capability information system in diversified task and complex cyber threat environment, a dual loop architecture resilient cloud environment mission assurance is proposed. Firstly, general technical briefly introduced. Drawing on idea software definition, based "perception analysis planning adjustment" constructed. Then, core deployment mechanism designed using distributed control. Finally, detail, which consisted six functional modules,...

The impact of hydraulic fracture from CBM well fracturing on slope stability the Shengli East No. 2 open‐pit coal mine is analyzed by numerical simulation and limit equilibrium methods. interference effect coalbed methane (CBM) promotes coordinated development CBM, discussed before after mining. It shows that nearly horizontal fractures are formed in seam due to fracturing, which dynamic facture length propping 137.2 m 105.2 m, respectively. Moreover, height 130.6 m. At location perforation,...

Different entrepreneurial models have a differentiated impact on creating jobs and stimulating economic growth. For China, to promote the implementation of Rural Revitalization Strategy, it is necessary further optimize return migrants. Through FSQCA (fuzzy set qualitative comparison method), this paper explores antecedent conditions configuration path model migrant. The results show that there are three paths for opportunistic Entrepreneurship: "risk preference & social norm oriented",...

Based on the principle of modulation and demodulation Binary Phase Shift Keying(2PSK),a mathematical model for 2PSK was built carrier signal designed using technology Direct Digital Synthesis (DDS).Then,a to simulate hardware circuit built,and then analyzed in Matlab Modelsim.Simulation results show that not only properly realizes function modulator-demodulator,but it also simplifies reduces programming time.

Digital substations primary equipments make use of many intelligent equipment, for example, Electronic Transformers (including Voltage EVT and Current ECT,which meet the standards IEC 60044-7/8),intelligent switch so on,digital secondary include IED(Intelligent Device). This thesis studys on function,design,hardware testing method system real-time communication digital equipments.