Six machine learning methods combined with six fingerprints and 49 descriptors were utilized to predict chemical genotoxicity.

Aquatic toxicity is an important issue in pesticide development. In this study, using nine molecular fingerprints to describe pesticides, binary and ternary classification models were constructed predict aquatic of pesticides via six machine learning methods: Naïve Bayes (NB), Artificial Neural Network (ANN), k-Nearest Neighbor (kNN), Classification Tree (CT), Random Forest (RF) Support Vector Machine (SVM). For the models, local obtained with 829 on rainbow trout (RT) 151 lepomis (LP),...

As a new paradigm to solve problems by gathering the intelligence of crowds, mobile crowdsourcing has become one hot spots in academic and industrial fields. Task requester, platform, crowd workers are stakeholders crowdsourcing, which inevitably leads conflicts interest. In order this problem, article constructs three-party evolutionary game model among task workers. This also considers collusion between platform make it more realistic. Then, replication dynamics method is utilized analyze...

This article proposes a wide input voltage range DC-DC buck converter based on AOT control mode, which can be used in low-power applications such as the Internet of Things and automotive chips. It includes zero current detector circuit that dynamically modifies offset voltage, detect inductor when is operating DCM mode. By turning off power transistor time, loss reduced to improve efficiency. The proposed designed using 0.18μm standard CMOS process. When 12V generate 5V output minimum reach...

The paper clearly reveals the mechanism of upset (bit error) and damage caused by high power microwave (HPM) interference for three-dimensional silicon device. 0.35 µm process related model two stages cascaded CMOS inverters is established first time utilizing semiconductor device simulator Sentaurus-TCAD to comprehendingly study HPM mechanism. Moreover, a detailed about induced performed. Furthermore, generated are explored using this model. dependences threshold P energy E on pulse-width τ...

The reliability of the integrated circuits (ICs) has become one greatest challenges with increasing complexity electromagnetic environment. On this basis, an explicit difference in damage location is observed high-power microwave (HPM) radiated CMOS inverters. detailed mechanism analysis performed. shows that overcurrent-dominant failure and latch-up-dominant are induced positive negative half radiation cycle respectively, resulting discrepancy. depletion region current <inline-formula...

Abstract The high-power microwave (HPM) effect heats solar cells, which is an important component of a satellite. This creates serious reliability problem and affects the normal operation In this paper, different HPM response characteristics two kinds cells are comparatively researched by simulation. results show that there similarities differences in hot spot distribution damage mechanisms between both cell, related to amplitude HPM. addition, duty cycle repetition frequency contributes...

Voyage Data Recorder (VDR) plays an important role in determining responsibility for marine accidents. Most of its capacity stores the shipboard navigation radar images. Thus, according to characteristics ship-borne images, on premise ensuring quality compression and playback, maximizing ratio is one ways improve VDR storage capacity. A wavelet fractal coding algorithm proposed this purpose. Integer transform applied decompose reconstruct image, then modified fast used encode low-frequency...

This article proposes a triple-mode modulation wide input voltage range DC-DC buck converter using adaptive power transistor width (APTW) technique, which can be used in low-power applications such as the Internet of Things and automotive chips. operates PWM mode under heavy loads switches to PFM light loads. Using load current detection circuit, it enters power-saving (PSM) at extremely adaptively adjusts minimize circuit losses. The proposed is designed 0.18μm standard CMOS process....

On the basis of status quo college students' innovation education and society's urgent demand for innovative talents, this paper started by introducing meaning education, analyzed ability, pointed out co-related influencing factors.Therefore, since TRIZ theory can promote disciplinary crossing integration, provide principle innovations inventions, put forward pertinent methods measures enhancing colleges ability formulate theory-based talent cultivation mode, it will be great significance...

The two-dimensional thermoelectric models of single-junction and triple-junction GaAs solar cells are established respectively utilizing Sentaurus-TCAD, to investigate the damage effects caused by HPMs. Simulation results demonstrate that there two burnout mechanisms cells: Joule heat accumulation under high electric field, failure due temperature surges induced avalanche breakdown. In addition, fitted empirical formulas also show at inflection point cathode front surface field occurs when...

This study presents a 2-D lidar odometry based on an ICP (iterative closest point) variant used in simple and straightforward platform that achieves real-time low-drift performance. With designated multi-scale feature extraction procedure, the cloud information can be utilized at multiple levels speed of data association accelerated according to structure, thereby achieving robust fast scan-matching algorithms. First, large scale, point are classified curvature into two parts: smooth...

Generator automatic voltage control device (AVC) is an and reactive power optimization terminal on the plant side. Aiming at improving performance of generator device, this paper introduces a detection method AVC substation based virtual dispatching environment. During testing, upper computer redundant connected to environment simulate sending instructions master station, behavior sub stations excitation system generators. The evaluated according feedback adjustment results, which can...

Two novel PSRR characteristic enhancement technologies based on the voltage reference (VR) is presented: Double-reference stacking technology (DRPST) and Pre-regulated-current (PRCT). The above two are explained by designing structures. obtained a depletion NMOS an NMOS. Structure I employs DRPST compared with traditional Pre-regulated-voltage (PRVT) to improve PSRR. II uses PRCT composed of improved (IPRVT) structural sources simulated in standard 0.18µm CMOS process. When output 810mV, VR...