Characteristics and close-range exploration methods of near- Earth asteroid 2016HO_(3)

The characteristics of asteroids are vital parameters for planning asteroid exploration missions.These characteristics have been explored in close range for some typical asteroids,and are summarized in the article.This allows estimates of the characteristics of asteroid 2016HO_(3),the target of the first Chinese asteroid exploration mission,Tianwen 2.We obtain 80 characteristic parameters in 9 categories and analyze their impacts on the mission.By comparing three close-range exploration modes,we provide advantages and disadvantages of each,and propose suitable methods for the exploration of 2016HO_(3).Owing to the weak gravity and small size of 2016HO_(3),a combination of multiple hovering positions and active orbiting is recommended for scientific exploration.

Measurement of Coordinate Parameter by Multi-baseline Digital Close-range Photogrammetry System and Data Analysis for Jujube

[Objective] The aim was to explore the measurement of coordinate parameter by multi-baseline digital close-range photogrammetry system.[Method] The 3-dimensional coordinate of 8-year-old Jujube was measured by using Lensphoto multi-baseline digital close-range photogrammetry system,and through comparing with measured data of Total Station,the error and accuracy of photogrammetry data were analyzed.[Result] The absolute error of X,Y and Z coordinate was 0-0.014,0-0.018 and 0-0.004 m respectively,and the relative error of X,Y and Z coordinate was less than 0.145%.The significance test of pairs for the photogrammetry data and measured data of Total Station indicated that the space coordinate data of stumpage were accurately measured by using the multi-baseline digital close-range photogrammetry method,and the photogrammetry data meet the need of space coordinate measurement for virtual plant growth simulation.[Conclusion] This study had provided theoretical basis for the growth measurement of virtual plant growth simulation.

Prophet_TD Routing Algorithm Based on Historical Throughput and Encounter Duration

Opportunistic networks are self-organizing networks that do not require a complete path between the source node and the destination node as it uses encounter opportunities brought by nodes movement to achieve network communication.Opportunistic networks routing algorithms are numerous and can be roughly divided into four categories based on different forwarding strategies.The Prophet routing algorithm is an important routing algorithm in opportunistic networks.It forwards messages based on the encounter probability between nodes,and has good innovation significance and optimization potential.However,the Prophet routing algorithm does not consider the impact of the historical throughput of the node on message transmission,nor does it consider the impact of the encounter duration between nodes on message transmission.Therefore,to improve the transmission efficiency of opportunistic networks,this paper based on the Prophet routing algorithm,fuses the impact of the historical throughput of the node and the encounter duration between nodes on message transmission at the same time,and proposes the Prophet_TD routing algorithm based on the historical throughput and the encounter duration.This paper uses the Opportunistic Networks Environment v1.6.0(the ONE v1.6.0)as the simulation platform,controls the change of running time and the number of nodes respectively,conducts simulation experiments on the Prophet_TD routing algorithm.The simulation results show that compared to the traditional Prophet routing algorithm,on the whole,the Prophet_TD routing algorithm has a higher message delivery rate and a lower network overhead rate,and its average latency is also lower when node density is large.

Customer participation in the service encounter

This paper considers the role of service customers in those service encounters where the customer participates in the service production and delivery process, and the customer factors, motivations and incentive mechanism to participate in service delivery are analyzed. This study explores the relationship between service quality and service customer participation in the service encounter and the effect of customer participation on service providers＇ job stress. Finally, the management implications about customer participation in the service encounter from the findings are discussed.

在Encounter中实现网格+局部树的时钟设计流程

本文提出了一种新的方法,可以在Encounter中实现全局网格加局部树(MLT)流程。通过在时钟设计流程中利用CTS和时钟网格的优势,可以确保MLT具有更小的偏差,并进一步优化网格结构以降低功耗。在全局网格结构中,MLT可以提供真实的负载累加值,而不是估计值。这一流程还有一个特性就是可以为多电源电压(MSV)时钟设计提供基本的支持。

A Comparative Experimental Study on the Blast-Resistant Performances of Single and Multi-Layered Thin Plates Under Close-Range Airblast Loading

The performance of multilayered thin steel plates subjected to close-range air blasts has been experimentally studied and compared with that of monolithic plates made of the same material and having equal mass. In present experiments, multilayered plates are in-contact four-layered thin steel plates and two types of deformation/failure modes were observed for them. Comparisons concerning deformation/failure modes, strain distributions and energy absorptions between the multilayered plate and its monolithic counterpart were conducted. It is found that the multilayered plate is much superior to its monolithic counterpart in the ability to deform against blast loading. Furthermore, under intense airblast loading, the multilayered plate can not only absorb much more energy but also effectively reduce the secondary destruction ability of structural fragments in comparison with its monolithic counterpart.

Development of the Emerging Theory of Encountering Nursing in a Nurse-Nursed Dyadic Relationship (ThENNDyR)

Encounters are celebrated experiences between persons with connectedness in human situations as expectation. While being in a human dynamic and rhythmic interaction, nursing encounters are dyadic relationships illuminated as patterns of an interconnected relationship moving between the nurse and the nursed, and reflecting person-and-otherness events. The purpose of this paper is to describe the theory of Encountering Nursing in a Nurse-Nursed Dyadic Relationship (ThENNDyR) and to illuminate the four nursing practice processes on which the theory is founded: Knowing as appreciating relational moments;Reflecting as engaging moments;Realizing as patterns of living moments;and Transcending as celebrating moments. Nursing practice occurs in moments in which dyadic relationships transpire as nursing encounters. As fleeting as moments are, the four processes of nursing simultaneously take place as understanding conditions that the who and what of the person warrants persons. “Encountering nursing” is a momentary co-existence of persons in a person-and-otherness situation communicating connectedness-interconnectedness in distinct patterning. Interactions in nursing exist as persons remain wholes and complete in the moment.

Signature of Single Binary Encounter in Intermediate Energy He^(2+)-Ar Collisions

We experimentally observe the signature of electron emission resulting from a single binary encounter mechanism in the intermediate collision energy regime of 30 keV/u He2＋ on argon. Electron emission spectra in the transfer ionization are obtained and compared with classical calculations from a two-step model considering the initial electron velocity and re-scattering of the binary encounter electron in the recoil potential. Although the present reaction is actually a four-body problem, the model starting from a binary encounter gives out surprisingly good agreement with the experimental data. Our studies show that orbital velocities of the electron affect the emission patterns of ionized electrons significantly.

Digital close-range photogrammetric application to small-scale physical simulation experiment

In order to research the possibility of digital close-range photogrammetric surveying in small scale physical simulation experiment, physical model coinciding with engineering practice was constructed based on similar theory. The datum processing method and surveying precision of digital close-range photogrammetric were analyzed. And the function relationship between overburden subsidence factor qr and the ratio z/H of stratum horizon z and mining depth H was researched. The results show that surveying points position mean error along horizontal direction is ±0.131 mm and vertical direction is ±0.192 mm. Therefore, multi-taking station cross direction digital close-range photogrammetric can completely satisfy the precision need of physical simulation experiment. And the empirical formula can be utilized to represent evolution law of stratum subsidence factor.

An Encounter with Chinese Delicacies

CHEN Xiaoqing is known as a “street foodie.” The director of the documentary series called A Bite of China and gourmet columnist has the ability to make his readers’ mouths water through his descriptions of food. Chen has the ability to discover unique flavors among all kinds of delicacies, regardless of whether they are served in famous restaurants or at street stands. His writing is like a kaleidoscope, which allows readers to not only see the multicolored dishes but also smell the aroma of various foods.

Incredible Syria 'Encounter Mesopotamia: An Exhibition of Antiquities from Ancient Syria' Kicks Off in Beijing

With 196 masterpieces of artworks and artifacts on display,“EncounterMesopotamia:An Exhibition of Antiquities from Ancient Syria”presents a narrative of the history of Syria and China-Syria exchanges along the ancient Silk Road.

Encountering a"Ghost

Ｅｎｃｏｕｎｔｅｒｉｎｇａ＂Ｇｈｏｓｔ＂ＢｙＹａｏＬａｎ（ｇｉｒｌ）Ｇｒａｄｅ４，ＢａｉｗａｎｚｈｕａｎｇＰｒｉｍａｒｙＳｃｈｏｏｌＩｔｗａｓｔｈｏｒｏｕｇｈｌｙｄａｒｋｏｕｔｓｉｄｅＷｈｅｎｗｅｆｉｎｉｓｈｅｄｏｕｒｓｕｐｐｅｒ．Ｍｏｍｔｏｌｄｍｅ...

Review of Intercultural Service Encounters:Cross-cultural Interactions and Service Quality,Edited by Piyush Sharma,Switzerland,Springer,2019,pp.vii+101,€54,99(hbk),ISBN 978-3-319-91940-9;€46(ebk),ISBN 978-3-319-91941-6

Since the 1990s,globalization has aroused people’s attention constantly.Meanwhile,with more and more immigrants,migrant workers,international students,foreign tourists,and business people,cross-cultural interaction has increased dramatically.Consequently,the communication and interaction between service employees and customers from different cultural backgrounds is getting frequent.Services have gotten great profits from the phenomenon which is known as intercultural service encounters(ICSE).For one who has contributed a lot to ICSE,Piyush Sharma in his book Intercultural Service Encounters:Cross-cultural Interactions and Service Quality attempts to concentrate on some significant factors closely related to ICSE,from the perspective of service employees.Account for Piyush Sharma’s novel view on the relationship of employees and customers in the process of ICSE,here is a review of his work.For each part of Piyush Sharma’s volume,this review gives readers a brief and concise summary,which is followed by comprehensive comments of the reviewer.This review is a good guidance and introduction for those who are interested in ICSE and those who major in foreign languages and marketing management to have a good command of Piyush Sharma’s volume.

基于语料库的FACE和ENCOUNTER使用异同研究

该文以Firth的共选理论中的扩展意义单位为指导,研究对象是COCA语料库中的face和encounter作为动词时排名前100的高频名词搭配,按照划分搭配组、总结句子结构、划分语义群、分析语义韵的过程分析face和encounter的使用异同。

An Encounter With Chinese Language & Culture

A handsome folk artist, a passionate photographer, an outgoing English teacher, and an ambitious architect these young people from different backgrounds and different countries encountered each other in China, exploring their self-worth and the meaning of life. Their lives intersect in an unexpected way with inspiration being sparked.