Speed的相關(guān)文獻在1990年到2022年內(nèi)共計610篇,主要集中在自動化技術(shù)、計算機技術(shù)、腫瘤學、公路運輸
等領域,其中期刊論文592篇、會議論文1篇、專利文獻17篇;相關(guān)期刊290種,包括微型計算機、轎車情報、汽車知識等;
相關(guān)會議1種,包括第三屆國際信息技術(shù)與管理科學學術(shù)研討會等;Speed的相關(guān)文獻由913位作者貢獻,包括金朝陽、向清三、Frank R. Tangherlini等。
摘要:
It is desirable to fabricate materials with adjustable physical properties that can be used in different industrial applications.Since the property of a material is highly dependent on its inner structure,the understanding of structure–property correlation is critical to the design of engineering materials.3D printing appears as a mature method to effectively produce micro-structured materials.In this work,we created different stainless-steel microstructures by adjusting the speed of 3D printing and studied the relationship between thermal property and printing speed.Our microstructure study demonstrates that highly porous structures appear at higher speeds,and there is a nearly linear relationship between porosity and printing speed.The thermal conductivity of samples fabricated by different printing speeds is characterized.Then,the correlation between porosity,thermal conductivity,and scanning speed is established.Based on this correlation,the thermal conductivity of a sample can be predicted from its printing speed.We fabricated a new sample at a different speed,and the thermal conductivity measurement agrees well with the value predicted from the correlation.To explore thermal transport physics,the effects of pore structure and temperature on the thermal performance of the printed block are also studied.Our work demonstrates that the combination of the 3D printing technique and the printing speed control can regulate the thermophysical properties of materials.
摘要:
Purpose–This study aims to analyze the development direction of train speed,density and weight in China.Design/methodology/approach–The development of China’s railway in the past 40 years can be divided into 3 stages.At the stage of potential tapping and capacity expansion,it is important to improve the train weight and density by upgrading the existing lines,and improving transportation capacity rapidly.At the stage of railway speed increase,the first priority is to increase train speed,reduce the travel time of passenger train,and synchronously take into account the increase of train density and weight.At the stage of developing high-speed railway,train speed,density and weight are co-developing on demand.Findings–The train speed of high-speed railway will be 400 km h1,the interval time of train tracking will be 3 min,and the traffic density will be more than 190 pairs per day.The running speed of high-speed freight EMU will reach 200 km h1 and above.The maximum speed of passenger train on mixed passenger and freight railway can reach 200 km h1.The minimum interval time of train tracking can be compressed to 5 min.The freight train weight of 850 m series arrival-departure track railway can be increased to 4,500–5,000 t and that of 1,050 m series to 5,500–6,400 t.EMU trains should gradually replace ordinary passenger trains to improve the quality of railway passenger service.Small formation trains will operate more in intercity railway,suburban railway and short-distance passenger transportation.Originality/value–The research can provide new connotations and requirements of railway train speed,density and weight in the new railway stage.
摘要:
由于游戲鍵鼠同辦公鍵鼠之間存在相對的通用性,所以也有部分廠商將在游戲外設中研發(fā)的技術(shù)或設計,挪用到產(chǎn)品推陳出新速度稍顯緩慢的辦公外設中,讓其更符合時下用戶的需要。雷蛇近期推出的Pro Type Ultra三模機械鍵盤便是這樣的產(chǎn)品。具備宏錄制功能的完全可編程按鍵且支持HYPERSPEED技術(shù)的它,與我們曾介紹的其他雷蛇游戲鍵盤有不少異曲同工之處,但在細節(jié)方面又為辦公族們做出了優(yōu)化,那么它在日常使用中的表現(xiàn)又會如何呢?
摘要:
1.Introduction The Beijing–Zhangjiakou high-speed railway(HSR)is an important transport facility that will serve the Beijing 2022 Olympic Winter Games.Its main line is 174 km long,and its maximum design speed is 350 km·h^(-1).It is the world’s first HSR to be designed based on the concept of an intelligent railway.Construction of the Beijing-Zhangjiakou HSR began on 29 April 2016,and the line was put into operation on 30 December 2019.
摘要:
Aligning billions of reads generated by the next-generation sequencing(NGS)to reference sequences,termed“mapping”,is the time-consuming and computationally-intensive process in most NGS applications.A Fast,accurate and robust mapping algorithm is highly needed.Therefore,we developed the FANSe3 mapping algorithm,which can map a 30×human wholegenome sequencing(WGS)dataset within 30 min,a 50×human whole exome sequencing(WES)dataset within 30 s,and a typical mRNA-seq dataset within seconds in a single-server node without the need for any hardware acceleration feature.Like its predecessor FANSe2,the error rate of FANSe3 can be kept as low as 10-9 in most cases,this is more robust than the Burrows-Wheeler transform-based algorithms.Error allowance hardly affected the identification of a driver somatic mutation in clinically relevant WGS data and provided robust gene expression profiles regardless of the parameter settings and sequencer used.The novel algorithm,designed for high-performance cloud-computing after infrastructures,will break the bottleneck of speed and accuracy in NGS data analysis and promote NGS applications in various fields.The FANSe3 algorithm can be downloaded from the website:http://www.chi-biote ch.com/fanse 3/.
摘要:
In this article, the author tentatively proves the idea common reader can improve reading abilityby practicing their eyeball. Everybody knows that in English learning field, reading is a big problem. Although many scientists try hard to find a way to overcome it, most learners cannot keep on reading. If there isa kind of easy and effective way that can well motivate the learners, the students can learn foreign languagemore happily and confidently. So the author uses this method to help the students to get the success as quicklyas possible, so that they can get the confidence and more. The author used the computer and a soft that a pictore moves all the time from left to right. By this way, the author wants to train the students' eyeball ability.And then he fastened the speed little by little and help the students to master the scientific rule of the eyeballmovement practicing. The author held a three-step-experiment. Each step includes methods and tests. Aftereach step, according to the result of the test, the author improved the method. Finally, the author proved theidea.