深亚微米并行CRC32编码芯片的设计和实现

在分析CRC编码算法的基础上,从传统的串行编码算法着手,推导出适合高速通信的并行算法,通过FPGA(现场可编程门阵列)验证确保算法代码的逻辑功能正确;采用中芯国际simc18(180nm工艺库)实现了并行CRC32编码芯片的设计.该设计具有编码速度快、占用资源少、低功耗、易于量产等优点.

卫星导航抗干扰专用芯片后端版图设计

随着电磁环境的日益复杂,卫星导航接收系统的抗干扰性能要求越来越高。在小型卫导接收系统的抗干扰设计中,体积和功耗已经成为最大的限制因素,抗干扰芯片的设计已成为解决该问题的有效途径。本文基于SoC Encounter后端版图设计工具,通过布局规划、电源设计、标准单元放置、时钟树综合及优化、布线等后端版图设计流程,完成了一款卫星导航抗干扰专用芯片的后端版图设计工作。

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.

Assessing Empathy in Anesthesia Residents with the Chinese Version of the Consultation and Relational Empathy: A Pilot Standardized Patient Program

Objectives To validate the reliability of the Chinese version of the Consultation and Relational Empathy(CARE)in physician-standardized patient(SP)encounter.We also tried to examine the agreement between video-based ratings and in-room ratings,as well as the agreement between the faculty ratings and SP ratings.Methods The CARE was translated into Chinese.Forty-eight anesthesia residents were recruited to make preoperative interview in SP-counter.Performance of each resident was graded by in-room raters,video raters and SP raters.Consistency between different raters was examined.Results The Chinese-CARE measure demonstrated high scale reliability with a Cronbach's alpha value of 0.95 and high consistency in the in-room ratings in intraclass correlation(coefficient=0.888,P<0.001).Despite a good consistency in intraclass correlation,video ratings were significantly higher than in-room ratings(39.6±7.1 vs.24.0±10.0,P<0.001),and Wilcoxon signed-rank test indicated that the pass/fail rate was significantly higher based on video ratings than based on in-room ratings(45/48 vs.22/48,P<0.001).SP ratings had a moderate consistency with in-room faculty ratings(coefficient=0..568,P<0.001),and there was no significant difference between the pass/fail rates based on the in-room ratings and SP ratings(22/48vs.28/48,P=0.12).Conclusions The Chinese-CARE measure is reliable in the assessment of empathy during preoperative anesthesia interview.In-room and video ratings are not equivalent,while SP may provide a feasible alternative for the faculty rater in the assessment of communication skills with an appropriate measure.

Study on Sustainable Rainwater Resource Utilization—Towards Deepening of Homo Environmentics

This paper mainly investigated the value of the rainwater by introducing a “Logic of Encounter” that is a new logic beyond the logos and lemma through the metaphors which compare the real rainwater to one’s life. A consideration regarding sustainable rainwater resource utilization has been described and the main results are summarized in the paper.

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。

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.

United theory of biological evolution:Disaster-forced evolution through Supernova,radioactive ash fall-outs,genome instability,and mass extinctions

We present the disaster-forced biological evolution model as a general framework that includes Darwinian ＂phylogenic gradualism＂, Eldredge-Gould＇s ＂punctuated equilibrium＂, mass extinctions, and allopatric, parapatric, and sympatric speciation. It describes how reproductive isolation of organisms is established through global disasters due to supernova encounters and local disasters due to radioactive volcanic ash fall-outs by continental alkaline volcanism. Our new evolution model uniquely highlights three major factors of disaster-forced speciation： enhanced mutation rate by higher natural radiation level, smaller population size, and shrunken habitat size （i.e., isolation among the individual pop- ulations）. We developed a mathematical model describing speciation of a half-isolated group from a parental group, taking into account the population size （Ne）, immigration rate （m）, and mutation rate （μ）. The model gives a quantitative estimate of the speciation, which is consistent with the observations of speciation speed. For example, the speciation takes at least 105 generations, if mutation rate is less than 10 3 per generation per individual. This result is consistent with the previous studies, in which μ is assumed to be 10 3-10-5. On the other hand, the speciation is much faster （less than l0S generations） for the case that μ is as large as 0.1 in parapatric conditions （m 〈 μ）. Even a sympatric （m ~ 1 ） speciatiou can occur within 103 generations, if mutation rate is very high （μ- 1 mutation per individual per generation）, and if Ne 〈 20-30. Such a high mutation rate is possible during global disasters due to supernova encounters and local disasters due to radioactive ash fall-outs. They raise natural radiation level by a factor of 100-1000. Such rapid speciation events can also contribute to macro-evolution during mass extinction events, such as observed during the Cambrian explosion of biodiversity. A similar rapid speciation （though in a much smaller scale） also has been undergoing in cichlid fishes and great African apes in the last several tens of thousand years in the current African rift valley, including the origin of humankind due to the radioactive ash fall-outs bv continental alkaline volcanism.

Midwife’s experiences of using intuition as a motivating element in conveying assurance and care

The expectations of a successful outcome during childbirth are high for all of the parties concerned. The overall objective of prenatal care and birth care is that midwives contribute to create the most positive experience for the expectant parents concerning their pregnancy, the actual childbirth and the child’s infancy. During the past thirty years, there has been a significant increase in Caesarean section frequency both in Sweden and in the rest of the Western World. More parents feel an overall insecurity when it comes to the labor phase leading up to childbirth. The purpose of this study was to describe how midwives experience their work of creating a sense of security and providing good nursing care when meeting with the expectant parents. A phenomenological approach was implemented using eleven qualitative interviews and these were analyzed with Giorgis’ method of analysis. The results of this analysis revealed three themes: organizational-professional conditions, the communicative ability of the midwives and their reflective-emotional competence. The ability of the midwives to trust their inner sensibility and intuition was something that was characteristic of all the interviews and consequently this was the essence of the results. Managements’ organization of the workload and how management utilized competent and experienced midwives affected the midwives’ ability to contribute to a sense of security and provide competent nursing care for expectant parents. When the communication was based on sensibility and compassion, the midwives’ were enabled to create a sound and trusting relationship between themselves, the MVC and with the expectant parents. The emotional involvement on the part of the midwives was an essential requirement for carrying out the work in a satisfactory manner. Perhaps a question for future research is how inner knowledge based on practical experience can benefit new personnel and how the organization and the education of healthcare providers can utilize the intuitive knowledge of midwives.

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.

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.

The Night the president Met the Burglar

A cat burglar invaded the bedroom of the President of theUnited States,who confronted him,struck a deal with him andhelped him escape.The President and First Lady—she slept through the encounter—never notified the Secret Service and he enjoined a journalistfriend not to print the story.The journalist kept his word,and this is the first time

Two Mysteries of Nature in Liaoning Province

JUST to the north of Shenyang,the capital of Liaoning Province,motorists along the Harbin-Dalian highway will encounter apeculiar slope khat is much easier to ascend than to descend.Theslope,approximately 90 meters long and 15 meters wide,slants abouttwo degrees toward the west.

词海探珠——84.战胜恐惧

心理学家对人类的各种恐惧进行了研究,把恐惧症大致分为三个大的类别:社会恐惧症、莫名其妙的恐惧症和特殊的恐惧症。这些大的类别以下又有小的类别,例如,特殊的恐惧症可以分为四个小的类别:对昆虫和动物的恐惧,对自然环境的恐惧,对血和伤害的恐惧,对危险场合的恐惧。据统计,大约5000万美国人患有某种恐惧症,其小大部分是妇女。心理学家提出下面8种情况,

谜语选萃

As I went out one moonlight night,I saw a thing that made me fright.I hit it hard and heavy blowsTill it bled gallons at the nose. My weapon is exceeding keen,Of which I think I well may boast,And I’ll encounter Colonel GreenTogether with his mighty host.With me they could not then compare,I conquer them both great and small,Tho’ thousands stood before me

VOA广播简介

美国的英语广播叫《美国之音》(The Voice of America),其内容简明扼要,信息量大,更主要的还是语言比较标准,最适于英语学习者练习模仿。它的节目分标准英语广播(Standard English)和特别英语广播(SpecialEnglish)。标准英语广播的语速快,句子长,词汇量大,适合具有中级以上英语水平的人练习听力;特别英语广播的语音清晰,语速慢,适合具有初级英语水平的人练习听力。特别英语广播的播出时间分别是早晨6∶30。

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.

‘Red Plum Blossoms’Chinese Chamber Music Concert:Telling a Story of Chinese Classical Music to the World

"Red Plum Blossoms"Chinese Chamber Music Concert is a model programme from the Close Encounters with Chinese Classical Music Series launched by the Headquarters of China Cultural Centers and Tourism Offices(under preparation).