Active

摘要： Dear editor,With the developments of industrial automation in recent years,vehicle suspension systems have received a great deal of attention in industry and academia due to their critical role in the chassis performance of vehicles[1].The suspension system is expected to guarantee the vehicle’s maneuverability and provide satisfactory ride comfort by absorbing the vibrations arising from the road surface excitations and ensuring road-holding capability and suspension safety.Motivated by the desirable performance of the model reference adaptive control(MRAC)approach,various literature studies have investigated its performance in diverse linear and nonlinear practical systems[2].

摘要： A research team led by Dr.LI Zhiheng and Dr.Thomas Stidham from the Institute of Vertebrate Paleontology and Paleoanthropology(IVPP)of the Chinese Academy of Sciences has discovered the amazingly well-preserved fossil skeleton of an extinct owl that lived more than six million years ago in China.Their detailed study of the skeleton’s fossilized eye bones shows the owl was active in the daytime,not the night.

摘要： This paper presents a comparison of the results obtained from the integration of the photovoltaic system to the electrical grid through the Active Power Filter.The innovative aspect of this article consists of the elaboration of 4 models in Matlab/Simulink for 4 methods of control of the Active Power Filter introduced between the photovoltaic system and the alternating current grid and the highlighting of the performances obtained regarding the quality and quantity of electricity transferred for each control method in part.Following the analysis of the results,it was found that by using the Indirect Control(CI)method of the Active Power Filter,the best results are obtained THDu=3.24%,THDi=2.46%if the photovoltaic system produces a larger amount of energy than the nonlinear load,and by using the methods of control of the Active Power Filter Synchronous Reference Frame(DQ)and Instantaneous Power(PQ)the best results are obtained:THDu=3.22%,THDi=5.26%for the method(DQ)and THDu=3.41%,THDi=5.17%for the method(PQ)if the photovoltaic system produces a smaller amount of energy than the nonlinear load.

摘要： 教室里的每个人都想知道黑色旋转门后面发生了什么。大一点的学生进去了,却再也没有出来。有时会有一股奇怪刺鼻的气味穿透我们的鼻子,让每个人发狂:“先生,那是什么难闻的气味?”这是我第一次接触神秘的暗房摄影。我完全没有想过自己将会一生为之痴迷.

摘要： Education philosophy,which plays a major role in teacher beliefs,is crucial for teacher educators. Ever since the end of last century, there has been a trend in North America to promote, or restore active learning in college/university classrooms. This paper, based on some explorations of the social constructivism, the six assumptions in Andragogy, the ARCS model, the active learning theory and some practical activities, proposes an integrated education philosophy about adult learning. It is assumed this will be able to provide some insight and guidance for college practitioners.

摘要： In response to the Joint Action for Defeating the COVID-19 within the Framework of the Silk Road Community Building Initiativelaunched by China NGO Network for International Exchanges(CNIE),China Foundation for Poverty Alleviation(CFPA)launched its international anti-epidemic action on March 27.

摘要： Under the conditions of joint torque output dead-zone and external disturbance,the trajectory tracking and vibration suppression for a free-floating space robot(FFSR)system with elastic base and flexible links were discussed.First,using the Lagrange equation of the second kind,the dynamic model of the system was derived.Second,utilizing singular perturbation theory,a slow subsystem describing the rigid motion and a fast subsystem corresponding to flexible vibration were obtained.For the slow subsystem,when the width of deadzone is uncertain,a dead-zone pre-compensator was designed to eliminate the impact of joint torque output dead-zone,and an integral sliding mode neural network control was proposed.The integral sliding mode term can reduce the steady state error.For the fast subsystem,an optimal linear quadratic regulator(LQR)controller was adopted to damp out the vibration of the flexible links and elastic base simultaneously.Finally,computer simulations show the effectiveness of the compound control method.

摘要： 1LEGO 1:1真实比例Volkswagen T2经典露营车德国慕尼黑举办的旅游展F.re.e Leisure and Travel Fair展出数十款经典旅行车,而当中一台超级经典露营车Volkswagen T2以LEGO砌成。继早前为了宣传《The LEGO Movie 2》而特别制作的1:1 LEGO版本Chevrolet Silverado 1500 LT Trail Boss之后,如今再度有单位以真实Volkswagen T2露营车作为根据制作出真实比例LEGO版本,由LEGO认证大师Rene Hoffmeister及Pascal Lenhard主理,采用了40万件积木耗时6个星期砌成,成品重达300公斤,除了车门可以敞开之外,里面所有的装潢及摆设均同样由 LEGO 砌成,让人叹为观止。

摘要： Objective: To develop an optimal follow-up treatment for neonatal and nosocomial infections and to examine correlations between the C-reactive protein (C-RP) and platelets. Methods: A sample of 27 septic neonates and 14 non-septic neonates were selected for this study. The non-septic neonates served as a control group. Blood samples were collected from both groups and analyzed for bacterial contamination via blood culture, complete blood count (CBC), and C-RP, according to international laboratory standards. Blood collection and analysis were repeated every day during the follow-up treatments with antibiotics to evaluate the kinetics of C-RP. Results: Blood culture found E. coli and Staphylococcus aureus in the blood of the septic cases. Serum C-RP concentrations were at high levels (24 mg/dl) in the septic neonates and at normal levels (lower than 6 mg/dl) in the control group. Treatment with active antibiotics resulted in a drastic reduction of the C-RP values and helped to reach a normal level as in the control group. On the other hand, there were increases in the platelet levels as the C-RP levels decreased. This result indicates a strong negative association between C-RP and platelet levels in the septic group only. Statistical analysis shows significant differences between the mean C-RP serum concentrations of the sepsis and non-sepsis. Conclusion: blood culture, active antibiotics, and kinetic C-RP measurements during the medical follow-up treatment are strong driving parameters for the optimal and successful management of sepsis.

摘要： Thermal annealing effects on gamma irradiated Ni/4 H-SiC Schottky barrier diode(SBD) characteristics are analyzed over a wide range of temperatures(400–1100 °C). The annealing induced variations in the concentration of deep level traps in the SBDs are identified by thermally stimulated capacitance(TSCAP). A little decrease in the trap density at E_C – 0.63 eV and E_C –1.13 eV is observed up to the annealing temperature of 600 °C. Whereas, a gamma induced trap at E_C – 0.89 eV disappeared after annealing at 500 °C, revealing that its concentration(< 1013 cm-3) is reduced below the detection limit of the TSCAP technique.The electrical characteristics of irradiated SBDs are considerably changed at each annealing temperature. To understand the anomalous variations in the post-annealing characteristics, the interface state density distribution in the annealed SBDs is extracted.The electrical properties are improved at 400 °C due to the reduction in the interface trap density. However, from 500 °C, the electrical parameters are found to degrade with the annealing temperature because of the increase in the interface trap density.From the results, it is noted that the rectifying nature of the SBDs vanishes at or above 800 °C.

摘要： 本发明公开了一种基于Active Learning的项目内软件老化预测方法，通过收集软件中代码静态度量，使用Active Learning挑选出样本进行打标签作为训练集，去预测剩下的无类标的样本。采用Active Learning进行样本挑选和人工打标签，构成训练集。采用过采样和欠采样结合法缓解类不平衡问题，使用机器学习分类器进行预测。本发明考虑了软件老化缺陷数据集样本少，收集比较耗时耗力，采用欠采样和过采样结合的方法缓解极类不平衡问题，有助于开发者在开发测试阶段发现软件老化相关缺陷并移除，避免软件老化问题带来的损失。本发明已在真实软件上验证过其可行性，并可推广至其他软件来预测软件老化相关缺陷。

摘要： 本发明公开了一种基于置信度的Active‑BiLSTM‑CRF中文层级地址分词方法，属于中文地址分词技术领域。创新性的基于条件随机场CRF中文分词模型的置信度高效筛出需要标注的关键地址样本，利用BiLSTM记忆地址的上下文信息，通过CRF的转移概率矩阵控制地址标注输出的能力，循环标注并训练模型。本发明通过将主动学习机制引入中文层级地址分词中，利用最小置信度原则选取“最不确定”的样本进行标注供算法学习，有效实现了标注成本与分词精度的均衡。

摘要： 本发明公开了一种基于Active Learning的项目内软件老化预测方法，通过收集软件中代码静态度量，使用Active Learning挑选出样本进行打标签作为训练集，去预测剩下的无类标的样本。采用Active Learning进行样本挑选和人工打标签，构成训练集。采用过采样和欠采样结合法缓解类不平衡问题，使用机器学习分类器进行预测。本发明考虑了软件老化缺陷数据集样本少，收集比较耗时耗力，采用欠采样和过采样结合的方法缓解极类不平衡问题，有助于开发者在开发测试阶段发现软件老化相关缺陷并移除，避免软件老化问题带来的损失。本发明已在真实软件上验证过其可行性，并可推广至其他软件来预测软件老化相关缺陷。

摘要： 本发明涉及硬盘Active灯点灯优化系统及方法，该系统包括服务器主板和与其连接的若干硬盘背板，每个硬盘背板上挂载有若干硬盘，每个硬盘均设有Active灯，服务器主板内设BMC，硬盘背板设有CPLD和Active灯供电模块，BMC输出硬盘上下电命令至CPLD，CPLD据硬盘上下电命令控制硬盘电源开关切断或闭合，以控制硬盘上下电，Active灯供电模块对Active灯供电，CPLD与Active灯供电模块连接，通过解析硬盘上下电命令控制相应硬盘Active灯点灯或灭灯。本发明解决了现行方案中无论硬盘上电还是下电Active灯仍正常点亮的问题，达到通过Active灯状态反映硬盘上下电状态的目的。

摘要： 本实用新型公开一种硬盘在位Active指示灯驱动装置，包括硬盘和Active指示灯，还包括可编程芯片；硬盘的输出端连接可编程芯片的输入端，可编程芯片的输出端连接Active指示灯。本装置简化了硬件电路设计，节约了生产成本；同时在已有可编程芯片上设计Active指示灯驱动模块，不会增加生产成本；最后基于可编程芯片实现硬盘在位Active指示灯驱动设计，便于扩充与裁剪，增加了设计的灵活性。

摘要： 基于N‑active构架的HTS卫星有效载荷射频域实现方法，具体为：(1)根据HTS卫星通信链路上、下行各频段提供的可用频率资源确定馈电波束的频率范围和用户波束的频率范围，设计并核算单个用户波束的工作带宽最大包络BW；(2)确定HTS卫星通信系统中，单个用户波束由几个信关站进行管理；(3)进行HTS卫星载荷前向馈电分路拓扑结构的设计；(4)设计前向馈电分路合成网络拓扑结构；(5)根据前向馈电分路合成网络进行有效载荷方案设计；(6)进行HTS卫星载荷返向链路馈电分路拓扑结构的设计；(7)设计返向链路分路合成网络拓扑结构；(8)根据返向链路分路合成网络进行有效载荷方案设计。本发明在射频领域实现了基于N‑active系统构架的载荷方案。

摘要： 本发明公开了一种缓解芯片active模式启动瞬间驱动能力不足的电路，通过增加了一个第二电流LDO模块，第二电流LDO模块的驱动能力处于第三电流LDO模块驱动能力与第一电流LDO模块驱动能力之间；在flash芯片处于待机模式，即EN使能信号处于低电平水平时，只有第三电流LDO模块工作；当EN使能信号翻转为高电平时，第一电流基准模块建立时间比较慢，大约1us，但是第二电流LDO模块可以快速启动，因此在第一电流基准模块1us的建立时间内，可以由第二电流LDO模块提供一部分的电流，缓解在1us的空窗期内输出电压由于驱动能力不足会被下拉的问题。

摘要： 本发明涉及Linux技术，公开了一种双端口Active‑Active的冗余保护方法和系统；其Infiniband网卡对应的物理端口分别为mlx0和mlx1，针对物理端口通过SR‑IOV技术进行设置虚拟接口ib0和ib1，针对ml1设置虚拟接口ib2和ib3；通过bonding技术将虚拟接口ib0和ib2形成bond0口，将虚拟接口ib1和ib3形成bond1口；网络端口的设置，将形成的bond口，设置为不同的网络端口；不同状态的物理端口至少一个为active，则两个对应的网络端口均为active。本发明保证了网络I/O连续性、业务的连续性，提供了更高的网络带宽。

摘要： 本发明公开了一种缓解芯片active模式启动瞬间驱动能力不足的电路，通过增加了一个第二电流LDO模块，第二电流LDO模块的驱动能力处于第三电流LDO模块驱动能力与第一电流LDO模块驱动能力之间；在flash芯片处于待机模式，即EN使能信号处于低电平水平时，只有第三电流LDO模块工作；当EN使能信号翻转为高电平时，第一电流基准模块建立时间比较慢，大约1us，但是第二电流LDO模块可以快速启动，因此在第一电流基准模块1us的建立时间内，可以由第二电流LDO模块提供一部分的电流，缓解在1us的空窗期内输出电压由于驱动能力不足会被下拉的问题。

摘要： 基于N‑active构架的HTS卫星有效载荷射频域实现方法，具体为：(1)根据HTS卫星通信链路上、下行各频段提供的可用频率资源确定馈电波束的频率范围和用户波束的频率范围，设计并核算单个用户波束的工作带宽最大包络BW；(2)确定HTS卫星通信系统中，单个用户波束由几个信关站进行管理；(3)进行HTS卫星载荷前向馈电分路拓扑结构的设计；(4)设计前向馈电分路合成网络拓扑结构；(5)根据前向馈电分路合成网络进行有效载荷方案设计；(6)进行HTS卫星载荷返向链路馈电分路拓扑结构的设计；(7)设计返向链路分路合成网络拓扑结构；(8)根据返向链路分路合成网络进行有效载荷方案设计。本发明在射频领域实现了基于N‑active系统构架的载荷方案。