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Teaching technical writing to engineering researchers particularly post graduate students is a demanding and complex task. Often the challenge faced by the language instructor is in having inadequate understanding on students' expected writing output which is engineering research publication. While the language instructors may find the language use aspect manageable, it is the understanding on expected writing output for engineering discipline that is a challenge; therefore, supporting language module developers to understand those expected outputs is essential and needed for the advancement in language teaching. In view on the need for the description of the targeted output which is engineering publication, this study focuses on supporting the understanding of engineering research publication specifically on drones. This study is aimed to describe the perimeter of research publication on drones written by prolific engineering writers. This paper uses bibliometric analysis method which is based on identifying the core research and authors, as well as the works that cited them. This study examines 275 research publications indexed in SCOPUS database and also investigates 1947 research publications that cited the 275 publications as reference source. The findings show that the publications are mostly articles, conference papers and reviews deriving mostly from the US, China and the UK whereas the citing documents are mostly from China, the UK and the US. This paper presents the description on the perimeter for both groups. Such description provides a ready narrative to language instructors as well as ready narratives and guidance on writing/content dimension for young scholars embarking on writing scholarly articles on drone research. [ABSTRACT FROM AUTHOR]

OBJECTIVE: To investigate the research status and development trend of regional distribution of esophageal cancer in China, and to provide reference for further study of the pathogenesis of esophageal cancer. METHODS: The databases of CNKI, Wanfang, Superstar Discovery and Chinese Biomedical Literature were retrieved, and the literature of regional distribution of esophageal cancer in China was analyzed and evaluated by bibliometrics. RESULTS: The number of literatures on the regional distribution of esophageal cancer in China is increasing continuously. The authors of the literatures on the regional distribution of esophageal cancer show a trend of clustering distribution according to the high incidence areas of esophageal cancer. Among the research institutes, the number of papers issued by institutions in the northern region is much larger than that in the southern region. The high incidence area of esophageal cancer is mainly located in Henan, Jiangsu, Hebei and other provinces. From the national point of view, more high incidence areas in the north than in the south, but the number of high incidence areas in the south is also increasing in recent years. CONCLUSION: In recent years, the study on the regional distribution of esophageal cancer has attracted much attention, and the amount of relative published paper is on the rise, however the profundity and the depth of the study is not far enough. There are not many experts deeply working on this field. Even for the researchers in this field, the published amount of the articles is quite small and limited. The lack of continuity on the research of esophageal cancer is another major problem. Therefore, a long-term monitoring mechanism should be established to continually inject new vitality into the study of regional distribution of esophageal cancer around the country. [ABSTRACT FROM AUTHOR]

WeChat is the most popular social media in the world, especially in China. There is no overview of publications in the area of WeChat Research which shows the big picture using data from all countries. This paper aims to review the status and visual map position of WeChat publication indexed by Scopus used a Bibliometric. The research was carried out using Bibliometric techniques. Data analysis as well as visualization utilizing VOS Viewer program and the Scopus function for analyze search results. In this review, the details collected applied to 1.264 documents issued from 2012 through 2019. The study reveals that He, L. and Sun Yat-Sen University were the most active individual scientists and affiliated institutions in WeChat Research. In WeChat Research, the Computer Science and Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes In Bioinformatics were the most areas of study and dissemination sources. There were three worldwide group maps with collaborative researchers. In order to identify the body of knowledge created from seven years of publication, this study constructed a convergence axis grouping comprising of WeChat Research: Social Networking, Education, Human, Article, WeChat. abbreviated as the SEHAW theme. [ABSTRACT FROM AUTHOR]

Indiscriminate discharge of heavy metals into the environment is of great concern globally, especially in developing countries. The health risk caused by heavy metals pollution due to its toxicity, non-biodegradation, bioaccumulation, and complex operation with different sources and routes has accelerated as some industries expand with little investment plan around treatment. Over the years, research has been carried out on different aspects of heavy metals pollution, including-, emissions, impact on human health and environment, and mitigation processes. In this study, bibliometric and visualization analysis were used to analyze and evaluate the term heavy metal pollution, health risk, and its treatment approach was analyzed to acquire the overview of the heavy metal pollution on groundwater sources, health risk and treatment, and or removal approaches in different countries of the world from the web of science 1995-2020 publication. The outcome showed that China had a major interest in heavy metal pollution and its impact on lives and ecosystems in the past years as the highest publishers relating to heavy metal treatment technology.VOS viewer software and MS Excel were used as bibliometric tools for the examination of the researcher's certification in their research trends, progress, and publication performance. This, in turn, reveals the publication trends, subject categories and influential journals, country performance, most cited keyword and co-occurrence, author, and co-authorship collaboration network in heavy metals research, which would be of value to new researchers in the field. This paper highlights the trend in heavy metal removal from wastewater. [ABSTRACT FROM AUTHOR]

Globally, pesticide use continues to rise, estimated to be over four million tonnes yearly. In 2020, it was almost 2.7 million metric tons, up 57% from 1990. Nanotechnology is an innovative and exciting technology that offers new nanoscale molecule designs, formulations, and delivery systems to diminish the hazardous pesticide effects. Many studies on nano-pesticide production have been published, whereas nano-biopesticides are still limited. The purpose of this research is to answer the question of whether nano-biopesticide formulations will emerge along the development of nano-pesticides. The research was conducted by using bibliometric analysis. All nano-pesticide and nano-biopesticide-related publications are extracted from the Scopus with no limitations year. Using VOSviewer, data on research scope, authorship contributions, number of citations, and global research trends are evaluated and mapped. The results show that the publishing of nanoparticles has an exponential trend, with 125 nano-pesticide documents. However, only 14 nano-biopesticide documents are available. India is the most productive country, publishing both nano-pesticides and biopesticides articles, 52 and 9 publications. India connects the Australian and European continents regarding nano-pesticide publications. China is next, with 36 articles about nano-pesticides currently published. Al-Whaibi (average of 86 citations) and Iavicoli have extremely high citation counts (average of 125.5 citations). In synthesizing nano-biopesticide formulations, we found that essential oils are the most common ingredient in nano-biopesticides. In future, the topic related to the impact of nano-biopesticides on crop production and resistance; the combination of nano-biopesticides and nano-fertilizers; the study of nano-biopesticides' effects on the environment; and microbial as nano-biopesticides are some trend in the nano-biopesticide formulation. We predict that research on nano-biopesticides will increase rapidly in the context of eco-friendly issues. Finally, this paper can serve as a basis for the upcoming research on nano-biopesticide formulations, particularly those involving microorganisms as bioactive substances. [ABSTRACT FROM AUTHOR]

Multi-criteria decision making (MCDM) methods are the most frequently used approach in various fields. The problem that always crops up in most MCDM methods in determining the weights of the criteria. This study aims to provide an overview of studies on subjective weight in MCDM. This study applies a bibliometric analysis and focuses on the subjective weighting method in MCDM. Using the keyword "subjective weight in MCDM" in the Scopus database by limit from 2017 until 2021, 32 documents studied subjective weight in the mathematics subject area. By using the standard bibliometric indicators, this article will state the publication year and annual growth, document and source type, the distribution of publications by countries, the number of authors, keyword analysis and citation analysis. From the results, the highest publication year was 2020, at about 34.38%. In addition, articles and journals are dominant, with 84.38% in each category of document type and source type, respectively. China and Taiwan, both quite active in publishing research that uses subjective weight, led the way with 43.18% of all publications. The majority number of authors, which accounts for about 38% of each document published, was three. The most frequent keywords used in those documents in the mathematics subject area are MCDM and some subjective weighting methods, where both are related to each other. Based on all 32 documents, most of the authors use the same technique, AHP, Fuzzy AHP or ANP. From these findings, we suggest that there should be more studies on the weighting method, and future authors can explore other techniques of subjective weight such as SMART, Delphi method, Swing method and many more. We also recommended that further studies be carried out on objective weight or by combining both methods, which are subjective weight and objective weight, namely the integrated weighting method. This will better result in the criteria weights that impact the results of the MCDM method. [ABSTRACT FROM AUTHOR]

Urban areas that are experiencing rapid development face various challenges, especially those related to climate change, population welfare and energy. One of the environmental quality studies is carried out using remote sensing-based ecological indexes. Bibliometric analysis has now developed into a widely used tool for viewing research trends globally. Research related to environmental sustainability, environmental quality and urban environment using bibliometric analysis has been carried out in various studies. This study attempts to conduct a bibliometric analysis of global research that examines the quality of the urban environment. With this analysis, it can be seen how the trends in global research regarding the quality of the urban environment are. This dataset includes 234 articles with keywords urban, environmental quality and remote sensing from 1979-2022 from the Scopus database. The bibliometric analysis was carried out using the R software, which is free software for statistical and graphical computing. The package used is bibliometrix. The results of the study indicate that global research trends related to remote sensing, environmental and urban quality can be identified, especially related to most relevant words, word cloud, trend topics and co-occurrence networks. Overall, research on this topic has increased, especially from 2007 to 2022. The country with the most research on this topic is China. The potential for other research that can still be developed can be seen from the co-occurrence network where there are gaps in terms related to urban heat phenomena, comparative analysis, quality assessment, surface temperature, spectral mixture, green space, GIS approach and multi temporal satellite. [ABSTRACT FROM AUTHOR]