Abstract Sustainable castor oil‐based waterborne polyurethanes (WPUs) are widely applied in multiple fields, while the strategies to simultaneously realize reprocessing, self‐healing, and novel applications attractive highly demanded. Herein, a molecular design strategy is proposed incorporate dynamic oxime‐carbamate bonds into WPUs. The obtained networks exhibit excellent toughness (>44 MPa), adequate stretchability, wonderful self‐healing efficiency (>95% at 80 °C for 8 h), which...

Unmanned ground vehicles (UGVs) and unmanned aerial (UAVs) have been widely used in delivery. In the context of COVID-2019, order to control development epidemic, many places adopted measures isolate close area once a confirmed case is found. While reducing contact between people, it also blocks normal driving vehicles. Only by changing traditional logistics distribution methods can customers who closed isolated for long time be served. Therefore, we use Cooperative UGV-UAV achieve it. this...

The sluggish charge-transfer kinetics of Fe(II) regeneration, unsatisfactory utilization H2O2, and low reaction efficiency remain largely unresolved in Fe3O4-based heterogeneous photo-Fenton systems. Herein, an situ covalent attaching strategy was employed to fabricate Fe3O4@covalent organic framework (COF) core–shell heterostructures. By virtue this, enhanced photoresponsive behavior obtained tailor the regeneration for ideal catalytic sites H2O2 were provided. Molecular engineering further...

This paper studied the classic feeder-bus network design problem (FBNDP), which can be described as follows: for passenger travel demand between rail stations and bus stops on a given urban transit network, it designs optimal feeder routes frequencies so to minimize passengers’ expense operator’s cost. We extended pattern of M-to-1 in most existing researches M-to-M. comprehensively considered cost, includes waiting riding cost bus, rail, transfer these two transportation modes, presented...

Train formation was brought into the train plan of urban rail transit, then length, operational period, and its count can be optimized together. On basis analyzing passenger flow general travel cost considering transport capacity, requirements traffic organization, corporation benefits, demand reasonably, constraint conditions objective functions were given. The multi-objective optimization model for transit presented. According to characteristics practical experience about plan, three-phase...

According to the assumption of small strains and total strain decomposition cast iron, expressions inelastic principal rate relative energy dissipation iron are derived, parameters tensile compressive damage ratio in phase proposed. Based on least consumption principle, combined with above parameters, strength criterion for under biaxial stress states is established. The variable expression considering effect Lode angle Furthermore, values verified by experimental stress–strain curves...

The operational capacity of an airport must be dimensioned under a long-term strategic view as its productivity is determined by available infrastructure.To predict the and satisfy domestic property, operation procedure analyzed from point Multi-agent system.The proposed agent based architecture microscopic model aircrafts' movement; each aircraft represented capable getting routing results instructing agent, makes own deconflicition decisions on basis part observable scene local to that...

Gas production from gas wells is affected by formation pressure and wellbore outflow during production. To increase the daily obtain smooth efficient wells, methods such as shut-in recovery foam injection drainage for are usually adopted. In this paper, gas-carrying liquid model, capacity prediction model utilized to establish a full-cycle method newly developed wells. Combining initial development pressure, production, water parameters of well, obtained next few years. Meanwhile,...

<p>In-band Network Telemetry (INT) has profoundly promoted the network visibility. However, existing solutions either face Maximum Transmission Unit (MTU) limitation or latency issue due to continuous insertion of INT metadata along long forwarding paths. In addition, conducting telemetry using user packets is prone result in duplicate and fall short achieve network-wide telemetry. this work, we propose NetworkSight comprehensively resolve these problems through cluster based path...