scholarly journals Changes in the Structures and Directions of Rock Excavation Research from 1999 to 2020: A Bibliometric Study

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Dongping Shi ◽  
Chengyu Xie ◽  
Lichun Xiong
Keyword(s):  
Rock Mechanics ◽  
Engineering Geology ◽  
Hot Spot ◽  
Rapid Development ◽  
Development Trend ◽  
The United States ◽  
Knowledge Map ◽  
Space Technology ◽  
Rock Excavation ◽  
Bibliometric Research

Rock excavation has been the hot spot and frontier of scientific research. Rock excavation research is in a period of rapid development. The bibliographies included in ISI Web of Knowledge database from 1999–2020 were used as data samples, and the collected data were analyzed by literature co-citation and cluster analysis using CiteSpace and VOSviewer information visualization techniques and dynamic network analysis tools. A knowledge map of the evolution of bibliometric research development is drawn to reveal the representative literature in the field of bibliometrics. The hot areas of bibliometric research are introduced. The development trend of bibliometrics is proposed. The results of the study show that the amount of the literature on rock excavation is growing rapidly. A large amount of the foreign literature is available in China, the United States, Australia, Canada, France, and other countries. The main included journals are Tunnelling and Underground Space Technology, International Journal of Rock Mechanics and Mining Sciences, “Rock Mechanics and Rock Engineering,” “Engineering Geology,” and “Bulletin of Engineering Geology and the Environment.” Keyword co-occurrence analysis includes the following contents: rock damage constitutive model, excavation damage area, numerical simulation, stability analysis support, and prediction technology of rock.

Coal Mine Safety Management Researching Situation Analysis Based on Knowledge Map

2014 ◽  
Vol 962-965 ◽  
pp. 1003-1009
Author(s):  
Hong Xia Li ◽  
Long Zhao Zhao
Keyword(s):  
Safety Management ◽  
Hot Spot ◽  
Basic Research ◽  
Development Trend ◽  
Research Field ◽  
Mine Safety ◽  
Published Data ◽  
Knowledge Map ◽  
Knowledge Mapping ◽  
Classical Literature

In order to understand the characteristics and law of development of coal research in the field of safety management, the papers published data from 1993--2013 based on Web of Science database and the Java platform development CitespaceIII visualization software for scientific knowledge map drawing is used. Through the knowledge map visualization analysis, it shows the origin of the research of international coal safety management and foundation of knowledge, and its basic and frontier disciplines. The results show that: through the visual keywords co-occurrence knowledge mapping analysis, high frequency keywords and high degree of heart keyword ranked in the top 10. It also shows the hot spot area and the development trend in the research field of coal safety management; from the literature co-citation results, classical literature and knowledge of basic research on coal safety management field, it plays an important role in the development process of the research in the field of visualization; through the journal co-citation analysis of knowledge map, it gets higher yield and literature journal, such as SAFETY SCI, COAL SCI TECHNOLOGY, CHINA COAL and the like, which shows that in the study of coal safety management field quantity of periodicals, China is the first, which explains China's leading position in the field of safety management of coal.

scholarly journals Investment in Space Resources: Property Rights to Natural Resources Extracted in Space and the Position of Iraqi legal system

2019 ◽  
Vol 5 (1) ◽  
pp. 36
Author(s):  
Arez Mohammed Sediq Othman
Keyword(s):  
Natural Resources ◽  
Legal System ◽  
Outer Space ◽  
Rapid Development ◽  
The United States ◽  
Legal Framework ◽  
Space Technology ◽  
Private Companies ◽  
Private Corporations ◽  
Space Activities

In the second half of the last century, the space activities have increased paralleled with the rapid development in space technology. The greed of giant corporations has exceeded the universe and tried to reach resources outside Earth. Exploring other planets is not something new, while racing to reach the resources outside earth by private space exploration companies as human’s off earth destiny is quite recent. Many nations have plan to reach the moon by 2020 including the United States who has plan to establish a permanent base on moon by 2024. The ambition to reach outer space is not just for the scientific purposes, but rather to exploit resources form space. As long as space is a common sphere among all the nations, there are many treaties signed and ratified to lay down broad rules and principle to organize the area. Mining celestial materials is one of the issues that does not have a legal framework as private companies are eagerly trying to mine materials which are not existed on earth such as Helium three or any other bodies that are scarce on earth. Until now, the international community has not been successful in establishing a solid legal system to regulate outer space activities. Besides, there are attempts by some countries to have particular legislation allowing private companies to extract natural resources. However, technological, economic and military powers of countries are the major factors in exercising the activities outside our planet due to the special nature of such activities. This paper argues that despite the difficulties of having a consensus over a legal framework, there are many other issues that need to be taken into consideration. Further, the perspective of the Iraqi legal system is also examined with regard to the possibility of adopting particular law on outer space activities. It also argues that although the lack of advanced technological skills might avoid countries reaching outer space, it will not prevent states from adopting specific legislation to regulate private corporations’ attempt to explore in this field.        

scholarly journals A Survey on Ship Intelligent Cabin

2020 ◽  
Author(s):  
Shuli Jia ◽  
Fuxin Wang ◽  
Mengchao Dong ◽  
Liyong Ma
Keyword(s):  
New Technologies ◽  
Hot Spot ◽  
Rapid Development ◽  
Development Trend ◽  
Data Driven ◽  
Sensor Data ◽  
Modern Information Technology ◽  
The Future ◽  
Artificial Intelligence Technology ◽  
The Development Trend

At present, intelligent ship has become a new hot spot of international maritime research and development. In order to achieve the purpose of safety, reliability, energy conservation, environmental protection, economy and efficiency, Intelligent ship integrates modern information technology, artificial intelligence technology and other new technologies with traditional ship technology. In this essay, the rapid development of intelligent cabin technology in recent years is surveyed. The intelligent cabin technology and the development trend of the current technology is analyzed, and the possible development direction in the future is pointed out. Collection, transmission and storage of sensor data are summarized. The development of status perception of cabin equipment and environment is discussed. Data-driven intelligent applications are summarized, and the development in the future is discussed. Intelligent cabin system is a data driven information system, which involves data acquisition, communication, storage, analysis, visualization and other rich content. Using the data provided by intelligent ship, more and more intelligent applications will be developed for ships.

scholarly journals Assessment of the Toxicity of Quantum Dots through Biliometric Analysis

2021 ◽  
Vol 18 (11) ◽  
pp. 5768
Author(s):  
Lishi Zhong ◽  
Lili Zhang ◽  
Yimeng Li ◽  
Xue Liang ◽  
Lu Kong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Rapid Development ◽  
Development Trend ◽  
The United States ◽  
Toxicological Study ◽  
Scientific Publications ◽  
The Status ◽  
Number Of Publications ◽  
Walled Carbon Nanotubes

Along with the rapid development of nanotechnology, the biosafety of quantum dots (QDs), a widely used kind of nanoparticles, has grabbed the attentions of researchers, because QDs have excellent and unique optical properties that other commonly used nanoparticles, like walled carbon nanotubes, do not have. The understanding of the toxicity of QDs is an important premise for their application in wider fields, including biology and medicine. This study sought to analyze scientific publications on the toxicity of QDs and to construct a bibliometric model for qualitative and quantitative evaluation of these publications over the past decade, which visually presented the status quo and future development trend on the toxicological study of QDs. A search for data using the triple blind method revealed that, as of 31 December 2018, there were 5269 papers published on the toxicity of QDs. RSC ADVANCES (5-year IF, 3.096) ranked first in the number of publications. China had the largest number of publications (2233) and the highest H-index (119), but the United States was still the leading country with regards to the quality of the research. LIU Y (106 publications) published the most papers, while Hardman R (304 co-citations) had the most co-citations. The keyword “walled carbon nanotube” ranked first in the research frontier. The findings not only determine a development trend of the toxicological study of QDs, but also identify further research directions in this field.

scholarly journals Research Progress and Future Trend of Space Materials Science

2020 ◽  
Vol 3 (1) ◽  
pp. 24
Author(s):  
Jiawei Yang
Keyword(s):  
Materials Science ◽  
Rapid Development ◽  
Space Station ◽  
Development Trend ◽  
Future Trend ◽  
Space Environment ◽  
Research Progress ◽  
Space Technology ◽  
Forming Process ◽  
Main Research

<p>Space materials science is an interdisciplinary field formed by the integration of materials science and space technology. It originated from the space exploration experiment in the mid-20th century and gradually grew into materials with the rapid development of manned spaceflight.</p><p>Science is a relatively complete branch discipline. China is about to usher in its own space station era, thus providing a broader prospect for this new discipline. In this paper, the main research progress in four aspects, including physical and chemical characteristics of space environment, liquid properties and phase transition dynamics of materials under space conditions, kinematics of preparation and forming process of space materials, and regulation and control of material organization and properties in space environment, has been systematically summarized, and the future development trend of this discipline has been analyzed and prospected.</p>

Recent Patents on the Angular Contact Ball Bearing of High-Speed Motorized Spindle

2020 ◽  
Vol 13 ◽  
Author(s):  
Yudong Bao ◽  
Linkai Wu ◽  
Yanling Zhao ◽  
Chengyi Pan
Keyword(s):  
High Speed ◽  
Ball Bearing ◽  
Rapid Development ◽  
Ceramic Materials ◽  
Development Trend ◽  
Numerical Control ◽  
Angular Contact Ball Bearing ◽  
Practical Applications ◽  
High Speed Cutting ◽  
Advantages And Disadvantages

Background:: Angular contact ball bearings are the most popular bearing type used in the high speed spindle for machining centers, The performance of the bearing directly affects the machining efficiency of the machine tool, Obtaining a higher value is the direction of its research and development. Objective:: By analyzing the research achievements and patents of electric spindle angular contact bearings, summarizing the development trend provides a reference for the development of electric spindle bearings. Methods:: Through the analysis of the relevant technology of the electric spindle angular contact ball bearing, the advantages and disadvantages of the angular contact ball bearing are introduced, and the research results are combined with the patent analysis. Results:: With the rapid development of high-speed cutting and numerical control technology and the needs of practical applications, the spindle requires higher and higher speeds for bearings. In order to meet the requirements of use, it is necessary to improve the bearing performance by optimizing the structure size and improving the lubrication conditions. Meanwhile, reasonable processing and assembly methods will also have a beneficial effect on bearing performance. Conclusion:: With the continuous deepening of bearing technology research and the use of new structures and ceramic materials has made the bearing's limit speed repeatedly reach new highs. The future development trend of high-speed bearings for electric spindles is environmental protection, intelligence, high speed, high precision and long life.

scholarly journals Rapid Deployment of an Algorithm to Triage Dental Emergencies During COVID-19 Pandemic

2021 ◽  
Author(s):  
Sharon C Perelman ◽  
Steven Erde ◽  
Lynda Torre ◽  
Tunaidi Ansari
Keyword(s):  
Rapid Development ◽  
The United States ◽  
Healthcare Systems ◽  
Patient Needs ◽  
Columbia University ◽  
Dental Infection ◽  
Screening Algorithm ◽  
Rapid Deployment ◽  
Medical Infrastructure ◽  
Insight Into

Abstract COVID-19 quickly immobilized healthcare systems in the United States during the early stages of the outbreak. While much of the ensuing response focused on supporting the medical infrastructure, Columbia University College of Dental Medicine pursued a solution to triage and safely treat patients with dental emergencies amidst the pandemic. Considering rapidly changing guidelines from governing bodies, dental infection control protocols and our clinical faculty's expertise, we modeled, built, and implemented a screening algorithm, which provides decision support as well as insight into COVID-19 status and clinical comorbidities, within a newly integrated Electronic Health Record (EHR). Once operationalized, we analyzed the data and outcomes of its utilization and found that it had effectively guided providers in triaging patient needs in a standardized methodology. This article describes the algorithm's rapid development to assist faculty providers in identifying patients with the most urgent needs, thus prioritizing treatment of dental emergencies during the pandemic.

scholarly journals A Bibliometric Insight of Genetic Factors in ASD: Emerging Trends and New Developments

2020 ◽  
Vol 11 (1) ◽  
pp. 33
Author(s):  
Kang Wang ◽  
Weicheng Duan ◽  
Yijie Duan ◽  
Yuxin Yu ◽  
Xiuyi Chen ◽  
...  
Keyword(s):  
Genetic Factors ◽  
De Novo ◽  
Rapid Development ◽  
The United States ◽  
Research Area ◽  
Scientific Output ◽  
Autism Spectrum ◽  
De Novo Mutations ◽  
Emerging Trends ◽  
Genetic Abnormalities

Autism spectrum disorder (ASD) cases have increased rapidly in recent decades, which is associated with various genetic abnormalities. To provide a better understanding of the genetic factors in ASD, we assessed the global scientific output of the related studies. A total of 2944 studies published between 1997 and 2018 were included by systematic retrieval from the Web of Science (WoS) database, whose scientific landscapes were drawn and the tendencies and research frontiers were explored through bibliometric methods. The United States has been acting as a leading explorer of the field worldwide in recent years. The rapid development of high-throughput technologies and bioinformatics transferred the research method from the traditional classic method to a big data-based pipeline. As a consequence, the focused research area and tendency were also changed, as the contribution of de novo mutations in ASD has been a research hotspot in the past several years and probably will remain one into the near future, which is consistent with the current opinions of the major etiology of ASD. Therefore, more attention and financial support should be paid to the deciphering of the de novo mutations in ASD. Meanwhile, the effective cooperation of multi-research centers and scientists in different fields should be advocated in the next step of scientific research undertaken.

App design of distance art education platform under internet ecological environment

2021 ◽  
pp. 002072092098352
Author(s):  
Lanlan Xu ◽  
Qiang Zhou
Keyword(s):  
Art Education ◽  
Interaction Design ◽  
Rapid Development ◽  
Development Trend ◽  
Mobile App ◽  
Traditional Art ◽  
Art Teaching ◽  
Education Platform ◽  
App Design ◽  
At Home

With the rapid development of computer and network technology, the application of mobile app has been involved in all walks of life, especially the traditional art teaching mode. Therefore, it is of great significance to design an app with art learning and education as the main content based on the concept of young people's cognitive psychology and art training. This paper first analyzes the current situation and development trend of art education app at home and abroad, then analyzes and studies the design and application needs of education app at home, clarifies the needs of students and teachers, analyzes the visual and psychological characteristics of teenagers and their impact on interface and interaction design, and finally designs an art education app that meets the domestic needs. The results show that the app can enhance the interest of young people in art learning.

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