摘要：There is a comm on sense view for atomic magnetometers that their spin-projection-noises(SPNs) are inversely proportional to (T_2)^(1/2), where (T_2)^(1/2) is the transverse relaxation time. We analyze the current atomic magnetometer types and give a counter-example of this common sense, which is the all-optical spin precession modulated threeaxis atomic magnetometer proposed by our group in 2015. Unlike the other atomic magnetometers, the SPN of this kind of atomic magnetometers is proportional to (T_2)^(1/2) due to the fact that the scale factor between P_x and B can be unrelated to the transverse relaxation time T_2. We demonstrate this irrelevance experimentally and analyze the SPN theoretically. Using short-pulse ultra-high power laser to fully polarize the atoms, the phenomenon that SPN decreases with T_2 may also be demonstrated experimentally and a new tool for researching SPN in atomic magnetometers may be realized.

摘要：We present a design of an acoustic levitator consisting of three pairs of opposite transducer *** orthogonal standing waves create a large number of acoustic traps at which the particles are levitated in *** changing the phase difference of transducer arrays,three-dimensional manipulation of particles is successfully ***,the relationship between the translation of particles and the phase difference is experimentally investigated,and the result is in agreement with the theoretical *** design can expand the application of acoustic levitation in many fields,such as biomedicine,ultrasonic motor and new materials processing.

摘要：为了给人机界面设计提供有效的评价手段,围绕用户对人机界面的感性需求,提出了基于感性工学的人机界面多意象评价方法。首先运用感性工学方法建立感性指标评价体系,在指标权重分配上,通过将灰色关联分析法引入群层次分析(analytic hierarchy process,AHP)法中,利用改进的群AHP法求取综合权重,解决了传统AHP法主观性过强的缺点;同时根据感性工学评价的模糊性,建立了一种直觉模糊集理论和TOPSIS(technique for order preference by similarity to an ideal solution)法相结合的综合评价模型。结合数控机床人机界面设计方案验证了该评价方法的有效性和可行性。该方法对人机界面感性设计与设计评价具有一定的参考意义。

摘要：We propose a general guideline on the design of a stimulated Brillouin scattering(SBS)-based microwave photonic filter(MPF)using a directly modulated *** gain profiles and passband ripples with waveform repetition periods of the driving current ranging from 2 to 100 ns are measured after the transmission of different fiber *** results show that the filter performance has nothing to do with the fiber length,and the digitalto-analog converter bandwidth requirement for the driving current is no more than 500 ***,the low cost,flexible reconfiguration,and miniaturization characteristics make an SBS filter using a directly modulated pump a promising choice as an MPF.

摘要：提出一种无线激光通信系统USB接口的设计方案。该方案采用Cypress公司EZ USB系列的an2131Q芯片为核心作为USB外围设备,an2131Q芯片在USB外围设备上电加载后运行其固件程序,负责管理USB外围设备及其与主机的通信。论述了如何利用该公司的EZ USB开发板和配套软件调试系统。

摘要：The term“philosophy of mythology”is not a newly-coined *** has been used by Schelling1,a German philosopher of the 19th century,as the title of his *** Cassirer,a famous German philosopher of the 20th century also used it in the chapter heading of the introduction of Symbolic Forms of Philosophy Volume 2.2 However,a review of the books on mythology or philosophy in China reveals the concept of philosophy of mythology is still unfamiliar to the Chinese academic circles since the books mentioned above of both Schelling and Cassirer have not been translated into *** there is a necessity to clarify the title of this book.

摘要：The Story of an Hour is a short story written by Kate Chopin,an American realistic novelist,at the end of the 19th *** are three spaces in the novel,the room,the house and space outside the *** one contains certain characters,actions,emotions and even *** paper tries to analyze its Feministic significance of the novel from the perspective of space narration.

摘要：In the 21st Century heritage frequently appears to be regarded by governments primarily as a means of economic regeneration and as a mainstay of the national tourism industry. Its broader values and potential uses are, when accepted at all, usually given far less attention and, on occasion, are actively dismissed. At the same time, there is a general acknowledgement that both tangible and intangible heritage are accepted casualties of armed conflict as victims of so-called 'collateral damage'.Recently, armed conflicts have seen heritage specifically targeted, damaged, and destroyed by belligerents and used as weapons of war against their *** presentation will question whether the simplistic economic importance of heritage. has perhaps blinded governments and society in general to overlook the wider potential of heritage. It will question whether heritage is simply destroyed as collateral damage or whether a more nuanced understanding of how and why heritage is damaged and destroyed during armed conflict might lead to a more structured response for the protection of heritage during conflict. Finally, the presentation will question whether heritage might be actively deployed as an ambassador for peace long before conflict starts.

摘要：With the development of the rhetoric study from the origins in ancient Athens and The Rhetoric of Aristotle to the formation of modern Communication Study at the beginning of the twentieth century,the Rhetoric Study changed in dynamic and its concepts and theories merged and formed the foundations of Communication Study which focused on personal communication and speech rhetoric skills at that *** the beginning of the twentieth century,although the Neo-Aristotelian rhetorical scholars from classic rhetoric approach created methodologies and enriched the content of Communication Study under the influence of humanistic study and social science study,but the Communication discipline was still in the embarrassing *** World War I and World War II,most scholars with backgrounds of social science,history and anthropology carried out the studies of propaganda wars and the message disseminating,and explored the military powers and governments’access to the media and developed serial communication modes from the social science perspective,which laid the foundation for Communication discipline in the academic *** author analyzed the Rhetoric and Social Science origins of Communication study in Boxing Plato’s Shadow:an Introduction to the Study of Human Communication,which is beneficial and helpful to understand the academic origins of Communication study and its cross-disciplined and embarrassing positions.

摘要：The knee is a multi-component organ system comprised of several tissues which function coordinately to provide mobility. Injury to any one component compromises the integrity of the system and leads to adaptation of the other components. Over time, such events often lead to dysfunction and degeneration of the knee. Therefore, there has been considerable research emphasis to repair injured components in the knee including cartilage, menisci, and ligaments. Approaches to improving healing and repair/regeneration of knee tissues have included surgery, anti-sense gene therapy, injection of growth factors and inflammatory cytokine antagonists, transplantation of in vitro expanded chondrocytes, enhancement of endogenous cells via microfracture, injection of mesenchymal stem cells, and implantation of in vitro tissue engineered constructs. Some of these approaches have lead to temporary improvement in knee functioning, while others offer the potential to restore function and tissue integrity for longer periods of time. This article will review the status of many of these approaches, and provide a perspective on their limitations and potential to contribute to restoration of knee function across the lifespan.