142,264 research outputs found
Scientometric portrait of Ram Gopal Rastogi
No full textPublication productivity of Indian scientist (R.G. Rastogi) has been documented.
Scientometric analysis of 312 papers by Ram Gopal Rastogi published during 1954 to 1992 in various domains: (a) Luni -solar activity and quiet -time E & F- region (57); (b) Equatorial electric field and low and mid latitude iof:osphere (78); (c) Ionospheric E- region irregularities (19); (dj Ionospheric F- region irregularities (32); and (e) Magnetic disturbance effects on the equatorial low and mid latitude ionosphere (23) were analysed. Interdomainery contents and of the number of papers: a+b were 36; b+c and b+d were 20 each; b+e were 16;. c+e were 5; a+e were 3; d+e were 2; and a+d had only one publication. Highest collaborations were with H. Chandra (61), M.R. Deshpande (42), and G. Sethia (19) out of his total 97 collaborators. His highest productivity was during 1978 with 28 papers followed by 19 papers during 1977. The core journals preferred by him for publishing papers were: Indian Journal of Radio & Space Physics, India, and Journal of Atomic & Terrestrial Physics, UK (59 each), followed by Proceedings of the Indian Academy of Sciences, India (34). Most prolific title keywords with their frequencies were: Ionosphere (92); Equatorial (61); F-region (53); Equatorial electrojet region (40), and Magnetic equator (30)
Two degree of freedom motion control of an energy optimized aircraft ram air inlet actuators
No full textA high accurate position control structure for energy optimal actuation of an aircraft ram air inlet actuator is presented in this paper. The structure comprises a feedforward planning of the energy optimal reference motion profile, and a feedback position control with an inner loop for speed tracking control using a robust two degree of freedom (inverse disturbance observer) controller. The motion control structure is validated by simulation and experimental results under different load conditions
RAM function is dependent on Kapβ2-mediated nuclear entry
No full textEukaryotic gene expression is dependent on the modification of the first transcribed nucleotide of pre-mRNA by the addition of the 7-methylguanosine cap. The cap protects transcripts from exonucleases and recruits complexes which mediate transcription elongation, processing and translation initiation. The cap is synthesised by a series of reactions which link 7-methylguanosine to the first transcribed nucleotide via a 5' to 5' triphosphate bridge. In mammals, cap synthesis is catalysed by the sequential action of RNGTT (RNA guanylyltransferase and 5'-phosphatase) and RNMT (RNA guanine-7 methyltransferase), enzymes recruited to RNA pol II during the early stages of transcription. We recently discovered that the mammalian cap methyltransferase is a heterodimer consisting of RNMT and the RNMT-activating subunit, RAM (RNMT-activating mini-protein). RAM activates and stabilises RNMT and thus is critical for cellular cap methylation and cell viability. Here we report that RNMT interacts with the N-terminal 45 amino acids of RAM, a domain necessary and sufficient for maximal RNMT activation. In contrast, smaller components of this RAM domain are sufficient to stabilise RNMT. RAM functions in the nucleus and we report that nuclear import of RAM is dependent on PY nuclear localisation signals and Kapß2 nuclear transport protein
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
U Ram Jin
No full text학위논문(석사)--아주대학교 일반대학원 :의학과,2014. 8ABSTRACT ⅰ
TABLE OF CONTENTS ⅲ
LIST OF TABLES ⅳ
Ⅰ. INTRODUCTION 1
Ⅱ. PATIENTS AND METHODS 3
A. Study Population 3
B. Data 3
C. Echocardiographic Findings 4
D. Statistical Analysis 4
Ⅲ. RESULTS 5
A. Baseline Characteristics 5
B. Patients with LV Dysfunction 7
Ⅳ. DISCUSSION 10
Ⅴ. CONCLUSION 14
REFERENCES 15
국문 요약 21MasterBackgrounds: Hanging injury is infrequent but its clinical course is usually devastating. Although hanging patients usually need cardiopulmonary resuscitation (CPR), hanging-associated cardiovascular damage has not been fully established. The aim of this study was to evaluate the echocardiographic findings in patients with hanging injury.
Methods: We enrolled 25 patients (9 males, 33 ± 15 year-old) with hanging injury who performed echocardiography within 2 weeks after admission. Clinical, demographic and laboratory data and transthoracic echocardiographic findings were analyzed.
Results: Of those 25 patients, 8 patients (2 males, 34 ± 13 year-old) showed left ventricular (LV) systolic dysfunction (mean LVEF: 34 ± 16%). Global hypokinesia was presented in one patient. Apical ballooning with sparing of the basal segments was presented in 2 patients. Basal akinesia and apical hyperkinesia was presented in one patient. The other 4 patients showed regional wall motion abnormalities unmatched with coronary territories.
The duration of suspension and the duration of CPR were not significantly different according to the presence of LVSD.
Conclusion: This study show the echocardiographic findings in considerable numbers of patients with hanging injury for the first time. Variable patterns of LVSD were presented in the patients of haning injury
Numerical simulation of ram extrusion in short-fiber-reinforced fresh cementitious composites
No full textThis is the author's accepted manuscript. The final published article is available from the link below. First published in JoMMS in 4(10), 2009, published by Mathematical Sciences Publishers.A series of ram extrusion tests was carried out on a short-fiber-reinforced, semisolid, fresh cementitious composite. An elastoviscoplastic constitutive model is proposed for the extrudable fresh cementitious composite. It features the associative flow rule, a nonlinear strain rate-hardening law, and the von Mises yield criterion. The model is then implemented in ANSYS/LS-DYNA explicit finite element code.
Various ram extrusion processes of the fresh cementitious composite were simulated. It has been found that the extrusion load versus imposed displacement predictions agree well with the experimental results. The fresh paste flow, through the die entry and the die-land, is then interpreted in light of the evolution of the deformation and distribution of state variables, mainly based on numerical results and the ram extrusion mechanism.
The effects of extrusion ratio and extrusion velocity on extrusion load are also investigated, based on the mechanical properties of the fresh cementitious composite. The study indicates that the numerical procedure established, together with the constitutive model proposed, is applicable for describing ram extrusion of short-fiber-reinforced fresh cementitious composites, which might provide a numerical rheometric tool from which ram extrusion of elastoviscoplastic paste-like materials can be examined and quantified.Hong Kong Research Grant Council and China Ministry of Science and Technology
A Review of the Current and Future Roles of AI
No full textThis chapter provides a comprehensive analysis of the evolving role of artificial intelligence (AI) and the concurrent ethical transformations from the present day to 2050. The chapter examines the trajectory of AI development, its societal implications, and the dynamic ethical landscape that shapes and is shaped by these technological advancements. The chapter begins by establishing the current state of AI, highlighting its applications across various sectors including healthcare, finance, education, and environmental management. We discuss the present capabilities of artificial intelligence technology, while also addressing current ethical concerns such as algorithmic bias, privacy infringements, and the digital divide. We have taken the liberty of projecting the art and science of possibilities, so the projections need to be seen in that light. It is difficult to project pace and adoption of technology with any certainty, but the chapter tries to draw from learned futurists with contrasting viewpoints as the basis to draw our own conclusions. Some may consider the projects as absurd fantasy. Over eons, humanity has progressed from thinking to doing the impossible. Throughout the chapter, the needed co-evolution of AI capabilities and ethical thinking is emphasized. The authors trace the development of AI ethics from its current focus on fairness and transparency to more complex considerations of machine consciousness and the rights of artificial entities. We have explored AI and ethical evolution in the areas of healthcare, transportation, and manufacturing industry to illustrate our points. The chapter closes by reflecting on the transformative potential of AI to reshape not just our technological landscape, but our fundamental understanding of ethics, humanity, and our place in the universe. © 2026 selection and editorial matter, Naresh Singh and Ram B. Ramachandran; individual chapters, the contributors
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
CHARACTERISTIC OF FROZEN-THAWED EPIDIDYMAL SPERMATOZOA AND REFRIGERATED STORAGE OF RAM SPERMATOZOA
No full textPost-mortem spermatozoa recovery is an important technique for obtaining germplasm reserves
from genetically valuable animals or endangered species. The purpose of this study was to study
whether ram spermatozoa within epididymides stored at 4º C for 24 and 48 h remain their motility and
viability. The characteristic of ram epididymal spermatozoa after freezing and thawing was also
observed. Six pairs of ram testes with attached epididymides were used in this study. The motility of
control spermatozoa was well maintained throughout the dilution procedure (83.3±1.1, 80±1.3, and
80±1.3% for collection, Niwa and Sasaki freezing -1 extender (NSF-1 and NSF-2 groups respectively);
but declined (P<0.05) after freezing and thawing (38.3±3.1%). Motile and viable spermatozoa could be
recovered from epididymides up to 48 h of storage, although their quality declined significantly
(P<0.05) as post-mortem storage time increased (motility: 83±1.2, 67±3.0, and 46±5.1; viability:
84.2±2.4, 73±2.8, and 66.6±2.6 % for control, 24 h and 48 h group respectively). These data indicate
that ram epididymides could be stored at 4º C for 48 h when epididymal spermatozoa cannot be
immmediately collected and cryopreserved. These storage conditions might be possible to use for
epididymal sperm recovery in wild ruminants.
Keywords: epididymal spermatozoa, Freezing, ram, refrigeratio
Handbook of Global Philosophies on AI Ethics
No full textThis book offers an exploration of the diverse perspectives shaping the future of artificial intelligence (AI), highlighting the influence of non-Western thinking in its development. What would the impact be if AI were developed with the wisdom of Ubuntu, the harmony of Confucian thought, or the Indian principle of Vasudhaiva Kutumbakam, "the world is one family", at its core?
This thought-provoking collection brings together leading voices from around the globe to reimagine AI systems that are fair, ethical, and inclusive. Addressing critical issues such as bias, fairness, privacy, and existential risks, it challenges the status quo and envisions a future where AI reflects the values of all humanity—not just a select few. Exploring the influence of topics like religion, culture, and social movements, the book examines how these perspectives shape AI’s application in industries such as finance, education, and the military, while underscoring the importance of establishing robust ethical guardrails.
Whether you’re a curious reader, a policy maker, a scholar, or a tech innovator, this book is your guide to understanding how different cultural perspectives can redefine AI ethics. It’s time to ask: what kind of world do we want AI to build for us all
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