Mechanical Properties and Microstructure of Polypropylene Fiber Reinforced Cement Mortar Soil

Bo Ruan,Hui Ding,Jidong Teng,Wei Deng,Shilong Zheng,Chenxi Ruan 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.6

A series of unconfined compressive strength tests and flexural strength tests are carried out to evaluate the improved effect of polypropylene fiber on the defects of cement mortar soil. The following factors, including the fiber content, cement content, sand content and curing age, are studied to investigate the influences on the mechanical properties and microstructure of the samples. The results show that the unconfined compressive strength (UCS), residual strength and flexural strength of the fiber reinforced cement mortar soil (FRCMS) substantially increase with increasing fiber content. The peak strain and ratio of the flexural-compression strength (Rfcs) of the FRCMS first increase and then decrease with an increase in fiber content,and the optimal fiber content is 3.5%. The brittleness index of the FRCMS is found to be inversely proportional to fiber content. The results suggest that the addition of an appropriate amount of fibers can substantially improve the plasticity and lateral stress capacity of the FRCMS. The strength of the FRCMS improves with the increase in cement content, sand content and curing age within a certain range. The microstructure of the FRCMS are analyzedby scanning electron microscopy (SEM) tests.

A Study on Chinese Real Estate Market - The Problems and Its Countermeasures

Ruan, Xiaowen,이성준 한국물류학회 2011 물류학회지 Vol.21 No.4

With the fast development of the Chinese economy and its urbanization, the real estate industry has been one of the most important and energetic industries to push up the economic scale in China. However during the process of development, there has been an excessive rise in real estate price and it has caused many economic and social problems. This paper examined the reasons why Chinese real estate market had soaring rise and also discussed the future development of Chinese housing property industry and meanwhile, this paper proposed some possible solutions to help China cool the real estate market and eventually to devoted to the healthy development of Chinese economy. This paper also discussed the relationship between developing real estate industry and national economic growth based on the case study in Japan and Korea. This paper found that due to Chinese governmental lax supervision on finance, due to Chinese governmental monopoly policy on land, due to the speculation on the real estate market and the fact of Chinese traditional concept of house ownership meanwhile, this paper found that the further reasons including house as the vale-added investment, urbanization, income rise and ect.; all of these factors devoted to the excessive rise in house price in Chinese real estate market. Based on the factors, this paper proposed that strengthening governmental supervision, levying property tax, repressing speculation and increasing the construction of low-rent house and affordable housefor public be possible ways to stable the real estate market and devote to the healthy development of Chinese economy.

Deletion of the Lmna Gene Induces Growth Delay and Serum Biochemical Changes in C57BL/6 Mice

Ruan, J.,Liu, X.G.,Zheng, H.L.,Li, J.B.,Xiong, X.D.,Zhang, C.L.,Luo, C.Y.,Zhou, Z.J.,Shi, Q.,Weng, Y.G. Asian Australasian Association of Animal Productio 2014 Animal Bioscience Vol.27 No.1

The A-type lamin deficient mouse line ($Lmna^{-/-}$) has become one of the most frequently used models for providing insights into many different aspects of A-type lamin function. To elucidate the function of Lmna in the growth and metabolism of mice, tissue growth and blood biochemistry were monitored in Lmna-deficient mice, heterozygous ($Lmna^{+/-}$) and wide-type ($Lmna^{+/+}$) backcrossed to C57BL/6 background. At 4 weeks after birth, the weight of various organs of the $Lmna^{-/-}$, $Lmna^{+/-}$ and $Lmna^{+/+}$ mice was measured. A panel of biochemical analyses consisting of 15 serological tests was examined. The results showed that Lmna deficient mice had significantly decreased body weight and increased the ratio of organ to body weight in most of tissues. Compared with $Lmna^{+/+}$ and $Lmna^{+/-}$ mice, $Lmna^{-/-}$ mice exhibited lower levels of ALP (alkaline phosphatase), Chol (cholesterol), CR (creatinine), GLU (glucose), HDL (high-density lipoprotein cholesterol) and higher levels of ALT (alanine aminotransferase) (p<0.05). $Lmna^{-/-}$ mice displayed higher AST (aspartate aminotransferase) values and lower LDL (lowdensity lipoprotein cholesterol), CK-MB (creatine kinase-MB) levels than $Lmna^{+/+}$ mice (p<0.05). There were no significant differences among the three groups of mice with respect to BUN (blood urea nitrogen), CK (creatine kinase), Cyc C (cystatin C), TP (total protein), TG (triacylglycerols) and UA (uric acid) levels (p>0.05). These changes of serological parameters may provide an experimental basis for the elucidation of Lmna gene functions.

Iterative learning controllers for discrete-time large-scale systems to track trajectories with distinct magnitudes

Ruan, X.,Bien, Z.,Park, K. -H. Taylor Francis 2005 International Journal of Systems Science Vol.36 No.4

<P> In the procedure of steady-state hierarchical optimization for large-scale industrial processes, it is often necessary that the control system responds to a sequence of step function-type control decisions with distinct magnitudes. In this paper a set of iterative learning controllers are de-centrally embedded into the procedure of the steady-state optimization. This generates upgraded sequential control signals and thus improves the transient performance of the discrete-time large-scale systems. The convergence of the updating law is derived while the intervention from the distinction of the scales is analysed. Further, an optimal iterative learning control scheme is also deduced by means of a functional derivation. The effectiveness of the proposed scheme and the optimal rule is verified by simulation.</P>

Lung dendritic cells induce migration of protective T cells to the gastrointestinal tract

Ruane, Darren,Brane, Lucas,Reis, Bernardo Sgarbi,Cheong, Cheolho,Poles, Jordan,Do, Yoonkyung,Zhu, Hongfa,Velinzon, Klara,Choi, Jae-Hoon,Studt, Natalie,Mayer, Lloyd,Lavelle, Ed C.,Steinman, Ralph M.,Mu The Rockefeller University Press 2013 The Journal of experimental medicine Vol.210 No.9

<P>Developing efficacious vaccines against enteric diseases is a global challenge that requires a better understanding of cellular recruitment dynamics at the mucosal surfaces. The current paradigm of T cell homing to the gastrointestinal (GI) tract involves the induction of α4β7 and CCR9 by Peyer’s patch and mesenteric lymph node (MLN) dendritic cells (DCs) in a retinoic acid–dependent manner. This paradigm, however, cannot be reconciled with reports of GI T cell responses after intranasal (i.n.) delivery of antigens that do not directly target the GI lymphoid tissue. To explore alternative pathways of cellular migration, we have investigated the ability of DCs from mucosal and nonmucosal tissues to recruit lymphocytes to the GI tract. Unexpectedly, we found that lung DCs, like CD103<SUP>+</SUP> MLN DCs, up-regulate the gut-homing integrin α4β7 in vitro and in vivo, and induce T cell migration to the GI tract in vivo. Consistent with a role for this pathway in generating mucosal immune responses, lung DC targeting by i.n. immunization induced protective immunity against enteric challenge with a highly pathogenic strain of <I>Salmonella</I>. The present report demonstrates novel functional evidence of mucosal cross talk mediated by DCs, which has the potential to inform the design of novel vaccines against mucosal pathogens.</P>

Game Character Design in Technology Stage : The Limited Factors in Story-Driven Character Design

Ruan Xiaoyin,조동민(Cho Dongmin) 한국디지털디자인학회 2010 디지털디자인학연구 Vol.10 No.2

As a good game the content of which should contain interesting character design . Although there have been a variety of characters in the past games the quantity of the characters was limited and thus the degree of it usually was not high since the technological competence of software and hardware was deficiency. As the amount of network traffic is enlarging and computer servo increasing the content of game can be contained and treated with its becoming bigger and bigger even more complex. The character design of game is coming to break away the limitation of technology and is getting to be easier and smoother more creative pluralistic delicate etc. which is the direction required by players. This study will discuss the design of computer game characters. The focus is mainly on the player character (later PC) that as opposed to non-player characters (NPC) is directly controlled by the player. This study goes straight into the character design field of games in terms of version design. The study will make a conclusion based on the character design processes concepts target models and players' perception and try to give suggestions on those issues. This study takes the Qualitative research with game designing groups respectively for data collections. The major point discovered by this study is that the game character design processed can help to increase the smooth of game design process when it is differentiated by the story-driven and art-driven.

Analysis on the Personality Traits of Cutscene Preference in Action-Adventure Game

Ruan Xiaoyin(완소음),Cho, Dong Min(조동민) 한국디지털디자인협의회 2014 디지털디자인학연구 Vol.14 No.4

최근 게임시장은 게임의 기술적 표현의 제한이 자유로워진 후 Game Cutscene의 디자인과 응용적 표현이 절대적으로 필요하게 되었다. 이러한 Cutscene에 대한 게임개발자들의 커다란 관심은 게임유저의 플레이 몰입향상을 위한 감정표현 및 게임리듬제어, 게임내러티브상의 보다 효과적인 역할에 관한 적절한 활용방안에 맞추어 졌다. 따라서, 유능한 Cutscene 디자이너는 사용자중심 디자인, 즉 게임유저의 감성적 디자인 요소 및 감정, 선호도에 관한 UCD 가이드라인을 활용하여 제작해야 한다. 본 연구는 비디오게임에 관한 연구범위를 정하고 동일한 자극환경에 의한 최근 가장 인기있는 5가지 액션 어드벤쳐 게임속의 Cutscene을 추출하여, 개인적 성향에 대한 게임플레이어의 선호도에 영향을 미치는 요인을 연구하였으며 사용자의 개인적 성향은 게임 속 Cutscene의 선호도 보다는 게임장르 영향을 받는다는 결과를 도출하여 게임디자인의 방향성을 제시하고자 한다. 본 논문은 연구가설, 연구조사방법 및 연구프로세스, 연구결과 순으로 요약된다. After breaking away from technical restriction, design and application of cutscene have become an absolutely necessary. Great attentions are currently attached by game developers to the proper utilization of cutscene to play a better role in narrative, emotion rendering and game rhythm control for enhancement of sense of immersion of players. Competent cutscene designers proceed from user center design and user center design guideline focuses on preference, feeling and other emotional design factors of users, or namely players. Specific to video game players, the study will realize factors impacting players’ preference to cutscene in aspects of personality traits through the summarization of service condition of cutscene in five popular action-adventure games. The study contains the results of which show no sufficient evidence for personality traits affecting preference to cutscene but some for attitude and motivation of players more or less affecting their feelings toward cutscenes with basic hypothesis mode, research method and procedures as well as research results.

A Stable 40 GHz Pulse Train Generation by Pulse Repetition-Frequency Quadruplication Using a Fiber Fabry-Perot Interferometer

Ruan, Wan-Yong,Park, Jae-Hyun,Seo, Dong-Sun Institute of Korean Electrical and Electronics Eng 2008 전기전자학회논문지 Vol.12 No.4

We demonstrate a simple method to generate a stable 40 GHz pulse train at 1550 nm by spectral filtering of a 10 GHz mode.locked pulse source using a fiber Fabry-Perot interferometer (FFPI). A high finesse FFPI with a 40 GHz free spectral range blocks successfully unwanted spectral components of a 10 GHz pulse source and passes only 40 GHz spaced spectral lines ensuring pulse repetition-frequency quadruplication of the input pulses.

Analysis on the use of Camera Language in Machinima Introduced in 3D Computer Games

Ruan, Xiaoyin(완소음),Cho, DongMin(조동민) 한국디지털디자인협의회 2013 디지털디자인학연구 Vol.13 No.2

It is a complicated system to design and develop a video game. Nowadays the game production is developing rapidly, but the design of a video game remains in use of softwares with the basic understanding of fine arts, and few studies can be found. Studying the art of a video game not only includes the vision styles, plots and sounds, but also the connotation and core of a game design. Comparatively, vision art, movie in particular, after a long-time development, has possessed the popular excellent artistic elements and the methods of its performance, such as plots and use of camera. A video game is a video-audio cultural product same as a movie, therefore it is helpful to technically apply those well-developed artistic elements and methods in designing a video game, which can improve the game’s structure, connotation and quality. This research focuses on how to use the camera to making a good machinima. Unlike physical cameras used in traditional film-making, the virtual camera has much better freedom and flexibility. How to gain these virtual camera"s advantages in machinima in 3D games are very fundamental and important. Related studies in camera usage are rare, most of them are in the traditional TV or film area. It has some difficulties to study in virtual camera"s movement. This research first investigates the camera angle, movement and viewpoint of movie cuts from published literatures of sample data which are chosen from 3 popular 3D game: L. A. Noire, Call of Duty: Black Ops and Assassin’s Creed: Revelation, then by way of analyzing data statistics, this research studies the camera language of machinima and generalizes the tendency of camera usage.

700 F hybrid capacitors cells composed of activated carbon and Li₄Ti₅O₁₂ microspheres with ultra-long cycle life

Ruan, Dianbo,Kim, Myeong-Seong,Yang, Bin,Qin, Jun,Kim, Kwang-Bum,Lee, Sang-Hyun,Liu, Qiuxiang,Tan, Lei,Qiao, Zhijun Elsevier Sequoia 2017 Journal of Power Sources Vol. No.

<P><B>Abstract</B></P> <P>To address the large-scale application demands of high energy density, high power density, and long cycle lifetime, 700-F hybrid capacitor pouch cells have been prepared, comprising ∼240-μm-thick activated carbon cathodes, and ∼60-μm-thick Li<SUB>4</SUB>Ti<SUB>5</SUB>O<SUB>12</SUB> anodes. Microspherical Li<SUB>4</SUB>Ti<SUB>5</SUB>O<SUB>12</SUB> (M-LTO) synthesized by spray-drying features 200–400 nm primary particles and interconnected nanopore structures. M-LTO half-cells exhibits high specific capacities (175 mAhh g<SUP>−1</SUP>), good rate capabilities (148 mAhh g<SUP>−1</SUP> at 20 C), and ultra-long cycling stabilities (90% specific capacity retention after 10,000 cycles). In addition, the obtained hybrid capacitors comprising activated carbon (AC) and M-LTO shows excellent cell performances, achieving a maximum energy density of 51.65 Wh kg<SUP>−1</SUP>, a maximum power density of 2466 W kg<SUP>−1</SUP>, and ∼92% capacitance retention after 10,000 cycles, thus meeting the demands for large-scale applications such as trolleybuses.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Assembly of 700 F AC/M-LTO hybrid capacitor pouch cells. </LI> <LI> AC and LTO electrodes with high density and high mass loading. </LI> <LI> Hybrid capacitor with high energy density, high power density, and long cyclability. </LI> </UL> </P>