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It is known that the maritime industry is intertwined with scientific developments. Considering the number of scientific research and support projects, the relationship between the scientific community and the industry is getting stronger day by day. The research aims to determine the main trend in the articles published between 2011-2022 in the journals published in the field of maritime management and indexed in SSCI-Social Science Citation Index. To determine the trend in the field of maritime management, the keywords of 1528 articles published in 3 journals determined according to the limitations were analyzed. As a result of keyword and network analysis, ports, maritime transport, liner shipping, container terminals, and data envelopment analysis-DEA are the most used keywords. The most important result obtained as a result of this study is that the events in the world (war, pandemic, terrorism, piracy, etc.) are in a rapid upward trend in the field of maritime business management and the scientific community has shown a rapid reaction on these issues. [ABSTRACT FROM AUTHOR]

This paper investigates the concentration and dispersion phenomenon observed in China's Social Sciences and Humanities (SSH) research. Our study presents an in-depth comparison and analysis of the number of papers published in the Chinese Social Sciences and Humanities Citation Index (CSSCI) and the Social Sciences and Humanities Citation Index (SSCI), including their source institutions, and the proportion of citations among elite and non-elite universities in China. Our findings are as following: (1) Over the past decade, the number of China's SSCI papers has increased, while the number of CSSCI papers has decreased. Moreover, the ratio of papers published by elite universities to non-elite universities has decreased in SSCI while increased in CSSCI. (2) The comparison of ratios of elite and non-elite universities' shares of publications indicated that the higher the journal level, the higher the ratio of elite and non-elite universities' share. (3) When comparing the Herfindahl–Hirschman index value of higher education institutions, we noted a decreasing trend in SSCI while an increasing trend in CSSCI. [ABSTRACT FROM AUTHOR]

This paper presents a bibliometric analysis of educational research in the Social Science Citation Index (SSCI) from 2008 to 2017. Using GraphPad Prism and VOSviewer tools, we analyzed 3,484 articles from South Korea, Singapore, and Japan. The annual number of published articles from South Korea and Japan increased significantly. Singapore was in the first place in the most accumulated citations, average Times Cited count and 10 high-impact factor journals, because universities in Singapore have extremely stringent criteria about promotion of their faculty and their publication venues. South Korea had the most number of articles in the top 10 most popular journals, which could owing to many South Korea scholars concern nation and regional journals have relative higher acceptance rate. Japan and South Korea had the most common studies concerning educational research. The annual number of articles showed strong positive correlations with research and development (R&D) expenditures and R&D expenditures as a percentage of GDP in South Korea. Plain Language Summary: Publications in Educational Research Journals from Singapore, Japan, and South Korea In this study, the educational research performance of Singapore, Japan, and South Korea between 2008 and 2017 in SSCI was examined from a bibliometric perspective, which also has demonstrated the potential of using GraphPad Prism and VOSviewer tools together. A total of 110,241 education and educational research articles were published between 2008 and 2017 in SSCI, of which 3,484 (3.16%) were from Singapore, Japan, and South Korea. Among these, researchers from South Korea were the most prolific (1,493, 1.35%, 16th highest in the world), followed by Singapore (1,128, 1.02%, 22nd), and Japan (910, 0.83%, 23rd). The annual number of published articles from South Korea and Japan increased significantly (P < 0.05). However, R&D expenditures and R&D expenditures as a percentage of GDP showed strongly positive correlations with the annual number of publications just in South Korea. Singapore had the most accumulated and average Times Cited count. The most highly-cited article was cited 468 times. Of the ten most highly-cited articles, five were from Singapore. Of the 42 articles published in the top ten high-impact education and educational research journals in terms of the impact factors in 2017, 20 were from Singapore. South Korea, accounting for about half the publications, was ranked first from the perspective of the number of articles in the top ten most popular journals. Researchers from Japan and South Korea had the most common studies concerning education and educational research category, probably because Japan is close to South Korea geographically and more related historically. [ABSTRACT FROM AUTHOR]

This study aims to reveal the effects of publish or perish culture, which is a product of the marketization of science, in the field of educational administration in Türkiye. For this purpose, a bibliometric analysis of 253 publications written in the field of education management in Türkiye, included in the SSCI index in the Web of Science database, was performed. The distribution of publications by years, type of publication, and the subjects they focus on were examined, and at the same time, the journals published were evaluated according to their impact factors, rankings, and whether they were paid or not. As a result of the analysis, it has been revealed that the effects of the publish or perish culture on the field of educational administration are parallel to its effects on other fields.

Incentivizing academic publications in internationally-indexed journals is a current topic of national debate especially in non-anglophone countries. To boost the dissemination of Chinese research results, the central government and higher education institutions had introduced various schemes to encourage international publications. However, a significant policy change took place when the Chinese government recently announced a break with SSCI supremacy conventions in research evaluation systems. Based on semi-structured interviews with five university managers and 30 academics in humanities and social sciences in five universities in China, this study examines the responses of both institution managers and individual scholars to the latest national guidelines. A qualitative analysis shows mixed attitudes among both HSS managers and individual academics towards the policy change: supportive but with doubts about the policy practicality as well as concerns about ensuing pressures to be generated by new evaluation systems. The findings suggest the policy change will not significantly affect HSS academics' pursuit of international publishing in a short term. It will, however, lead to some adjustments in the existing institutional evaluation regulations. The findings can contribute to the understanding of HE policy influence on academics as well as its potential implications for the global trend of anglicized academic publishing. [ABSTRACT FROM AUTHOR]

In recent years, high-growth entrepreneurship (HGE) research has gained increasing importance. For this reason, it is considered necessary to analyze papers that have had the most significant impact on the development of the discipline and that should be familiar to all researchers. Building new knowledge on these works is important because it provides legitimacy and coherence to the future development of this research field. Thus, this paper aims to identify and characterize the classic articles in the field of HGE, a line of research that has seen significant growth in the last 30 years. The H-Classics method is used to identify these papers. Subsequently, several bibliometric aspects of this collection are analyzed, such as the forums of journals where they have been published, the most productive authors, the patterns of collaboration, and an analysis of the conceptual structure through co-word analysis. Exhaustive content analysis is carried out to complement this vision, identifying the proposed objectives, methodologies, types of data, analysis techniques used, and their main contributions in three consecutive periods. The results are of value to researchers interested in high-growth firms because they allow us to understand the foundations on which this discipline has been built through its classics and to determine its main challenges for the future. [ABSTRACT FROM AUTHOR]

This study analyses the thematic and conceptual structure of the Spanish scientific production published in Emerging Sources Citation Index (Web of Science) journals. In this way, the aim is to identify the closest links between concepts and terms based on the co-occurrence of keywords used by the authors of the papers analysed, and also to point out the theoretical foundations that exist in the discipline through the co-citation relationships of articles in the bibliography of the documents in the sample. Finally, these results were compared with those obtained from the analysis of Spanish scientific production in Social Sciences Citation Index (SSCI). To achieve these objectives, a network analysis of the co-occurrence of keywords and co-citation of references in articles published in Communication journals between 2015 and 2021 in ESCI (N = 3,559) and SSCI (N = 1,738) with at least one author linked to a Spanish institution was carried out. The results point to similar structural cohesion values and to a thematic and methodological similarity between both sets observed. There is a marked tendency towards quantitative studies on new technologies. While in SSCI there is an almost absolute dominance of Journalism studies, in ESCI there is a greater diversity of other disciplines such as Audiovisual Communication or Advertising. However, the intellectual structure of the production in SSCI reflects a more specialised character than in ESCI. [ABSTRACT FROM AUTHOR]

With the development of computer and information technology, mobile teaching has enjoyed pride of place among teaching mediums in the past two decades. To visually explore the mobile learning hotspots and trends present in international journals, this study adopted two science mapping tools (CiteSpace and VOSviewer) to first detect and then visualise emerging trends (i.e., hotspots) in the mobile learning literature. A total of 528 mobile learning articles published between 2003 and 2021 that appeared in 21 international educational technology journals indexed in the SSCI database were retrieved for bibliometric analysis. The results show (1) there was a remarkable increase in academic output in this field starting in 2008 that topped out in 2021; (2) co-authorship with academics from diverse countries/regions and institutions was evident; (3) three trending foci in the literature include defining mobile learning, designing learning systems, and exploring mobile learning effectiveness; and (4) the high-frequency co-cited publications focus on the effectiveness of mobile devices via different research methods. This study provides scholars with an accessible summary of the current trends in mobile learning, identifies the active researchers in this field, and reports on which outlets are most relevant for research produced on this topic. In addition, the findings have direct implications for the education and private sectors. Mobile devices are not widely adopted in classroom settings and are often considered a learning tool more suited for out-of-class assignments or practice. Therefore, it is necessary for information technology educators to invest in actively initiating the integration of mobile technology into the classroom. Those in the technology industry should aim to develop mobile devices and relevant educational applications/software that can be utilised not only within the confines of the classroom but also to bridge in-class and out-of-class learning. [ABSTRACT FROM AUTHOR]

Different types of in-depth literature reviews were conducted to identify, evaluate or summarize the findings, common themes, trends, gaps, and used methods in mathematics education research. In recent decades, technological advances have enabled us to evaluate mathematics education literature in a more reliable, powerful, and objective manner. This study aims to present a complete description of Turkey-addressed mathematics education research using bibliometric methods. In other words, the current study aims to identify the most influential and/or productive authors, institutions, and publications in the field of mathematics education in Turkey. This study also aims to visualize and uncover the dynamic of the conceptual and intellectual structure of the field. For this purpose, citation analysis, co-occurrence analysis, co-citation analysis, and science mapping were performed using 416 highly-qualified and SSCI-indexed articles obtained from the WoS database. The results of citation analysis indicate the most influential authors are A. Baki, B. Guven, and D. Akyuz, respectively while the most productive ones are M. Isıksal-Bostan, A. Kursat Erbas, and O. Birgin. The most effective and leading institutions in the field are METU, Karadeniz Technical, and Hacettepe Universities. Additionally, co-occurrence analysis indicates mathematical achievement, mathematical modelling, and attitude are the most commonly used author keywords. Co-citation mapping visualizes the knowledge base of the mathematics education research and uncover which subjects the scholars in the field benefited from the research studies of seminal authors. Based on the findings, the current study makes suggestions for the research topics that could be influential and needed further research in the field.

Copyright of Tourism Tribune / Lvyou Xuekan is the property of Tourism Institute of Beijing Union University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The study analysed Croatian journals covered by Web of Science (WoS) Science Citation Index Expanded (SCIE) and Social Science Citation Index (SSCI) over three time periods. The first two periods were the periods of inclusion of Croatian journals in SCIE/SSCI, and the third period was the period of exclusion of journals. In 1999, there were 12 Croatian journals indexed, and in 2011, mostly as a result of the WoS Regional Expansion Programme, there were 50 Croatian journals covered by SCIE/SSCI. The IF range of the Croatian journals showed an increase over the years from 1999 to 2011, but most journals remained in the fourth quartile (Q4). Although Croatia is considered as a country from the scientific periphery, in comparison with neighbouring Italy, Hungary, Slovenia, and Serbia in 2005, 2011, and 2018, Croatia had a permanently strong journal representation in JCR.

Different types of in-depth literature reviews were conducted to identify, evaluate or summarize the findings, common themes, trends, gaps, and used methods in mathematics education research. In recent decades, technological advances have enabled us to evaluate mathematics education literature in a more reliable, powerful, and objective manner. This study aims to present a complete description of Turkeyaddressed mathematics education research using bibliometric methods. In other words, the current study aims to identify the most influential and/or productive authors, institutions, and publications in the field of mathematics education in Turkey. This study also aims to visualize and uncover the dynamic of the conceptual and intellectual structure of the field. For this purpose, citation analysis, co-occurrence analysis, co-citation analysis, and science mapping were performed using 416 highly-qualified and SSCIindexed articles obtained from the WoS database. The results of citation analysis indicate the most influential authors are A. Baki, B. Guven, and D. Akyuz, respectively while the most productive ones are M. Isıksal-Bostan, A. Kursat Erbas, and O. Birgin. The most effective and leading institutions in the field are METU, Karadeniz Technical, and Hacettepe Universities. Additionally, co-occurrence analysis indicates mathematical achievement, mathematical modelling, and attitude are the most commonly used author keywords. Co-citation mapping visualizes the knowledge base of the mathematics education research and uncover which subjects the scholars in the field benefited from the research studies of seminal authors. Based on the findings, the current study makes suggestions for the research topics that could be influential and needed further research in the field. [ABSTRACT FROM AUTHOR]

Copyright of Accounting & Auditing Perspective Magazine / Muhasebe ve Denetime Bakış is the property of Union of Chambers of Certified Public Accountants of Turkey (TURMOB) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The study analysed Croatian journals covered by Web of Science (WoS) Science Citation Index Expanded (SCIE) and Social Science Citation Index (SSCI) over three time periods. The first two periods were the periods of inclusion of croatian journals in SCIE/SSCI, and the third period was the period of exclusion of journals. In 1999, there were 12 Croatian journals indexed, and in 2011, mostly as a result of the WoS Regional Expansion Programme, there were 50 Croatian journals covered by SCIE/SSCI. The IF range of the Croatian journals showed an increase over the years from 1999 to 2011, but most journals remained in the fourth quartile (Q4). Although Croatia is considered as a country from the scientific periphery, in comparison with neighbouring Italy, Hungary, Slovenia, and Serbia in 2005, 2011, and 2018, Croatia had a permanently strong journal representation in JCR. [ABSTRACT FROM AUTHOR]

Educational psychology is a discipline with a relatively long and intricate history. This study contributes to the understanding of the most recent developments of educational psychology research through the exploration of 35,210 articles published in all journals indexed in the Web of Science educational psychology category for the 2000-2019 period. The results of the study show that the volume of research on educational psychology has doubled during this period and a few journals accumulate most of the research produced in the discipline. Most studies have been published in the English language and in the United States, although research produced in China has experienced the greatest growth. Recent research on educational psychology has predominantly addressed 16 research themes over the last 20 years, although research on child-age students, teaching and teacher education, learning and education, assessment and testing, socio-cultural diversity, learning environments, and educational measurement have captured the greatest attention.

The databases of Web of Science (WoS) have rapidly expanded their coverage of scientific journal during the past few decades. For the providers of WoS, this growth strategy has been a way to reduce existing biases in the coverage of these databases, especially in geographical regard. We look into the consequences of this strategy at the level of disciplines, and discuss its underlying rationales. Our analyses particularly focus on the SSCI. We first highlight interdisciplinary inequalities in the coverage of this database, and discuss why disciplines, such as Economics and Management, which are hierarchically-structured and whose journals have high impact factors in WoS, have benefited most from the growth of WoS. Their relative weight in the SSCI has grown at the expense of other disciplines. We also argue that changes in the coverage of this database have performative effects. There are winners and losers of the editorial expansion strategy of WoS in the real academic world. In the concluding section, we suggest that the providers of WoS reconsider the coverage of their databases in order to reflect and protect the interdisciplinary diversity in the world of science. [ABSTRACT FROM AUTHOR]

Background: Stigmatizing experiences is common in Parkinson's disease (PD) and appears to provide a negative contribution to the quality of life. Our aim of this study was to investigate the extent of stigma and its predictive factors in patients with PD from our hospital in Shanghai, China. Methods: In 276 individuals with PD (135 women and 141 men), stigma was measured by the 24-item Stigma Scale for Chronic Illness (SSCI). Multivariate linear regression model was used to assess predictors of stigma including demographics (age and gender), disease duration, stage (Hoehn and Yahr Scale), motor function (Unified Parkinson's Disease Rating Scale Part 3, UPDRS-III), non-motor symptoms (Non-Motor Symptoms Scale, NMSS), cognitive level (Mini-Mental State Examination, MMSE), as well as anxiety (Hamilton Anxiety Rating Scale, HAM-A) and depressive disorders (Hamilton Depression Rating Scale, HAM-D-24). Results: The total score of SSCI was 49.9 ± 14.3, and 48.5% of the patients checked "rarely" to "sometimes." For the total sample, the full model accounted for 47.8% of the variance in stigma (P < 0.05). Higher UPDRS-III scores, longer course of disease, younger age, tremor-dominant subtype, and higher depression scores were significantly associated with stigma among individuals with PD. Conclusion: Our finding suggested a mild-to-moderate level of stigma in patients with PD. Tremor-dominant subtype, longer course of disease, younger age, severe motor symptoms, and depression are the predictors of stigma in PD. [ABSTRACT FROM AUTHOR]

Educational psychology is a discipline with a relatively long and intricate history. This study contributes to the understanding of the most recent developments of educational psychology research through the exploration of 35,210 articles published in all journals indexed in the Web of Science educational psychology category for the 2000-2019 period. The results of the study show that the volume of research on educational psychology has doubled during this period and a few journals accumulate most of the research produced in the discipline. Most studies have been published in the English language and in the United States, although research produced in China has experienced the greatest growth. Recent research on educational psychology has predominantly addressed 16 research themes over the last 20 years, although research on child-age students, teaching and teacher education, learning and education, assessment and testing, socio-cultural diversity, learning environments, and educational measurement have captured the greatest attention. [ABSTRACT FROM AUTHOR]

Background: Stigmatizing experiences is common in Parkinson's disease (PD) and appears to provide a negative contribution to the quality of life. Our aim of this study was to investigate the extent of stigma and its predictive factors in patients with PD from our hospital in Shanghai, China.Methods: In 276 individuals with PD (135 women and 141 men), stigma was measured by the 24-item Stigma Scale for Chronic Illness (SSCI). Multivariate linear regression model was used to assess predictors of stigma including demographics (age and gender), disease duration, stage (Hoehn and Yahr Scale), motor function (Unified Parkinson's Disease Rating Scale Part 3, UPDRS-III), non-motor symptoms (Non-Motor Symptoms Scale, NMSS), cognitive level (Mini-Mental State Examination, MMSE), as well as anxiety (Hamilton Anxiety Rating Scale, HAM-A) and depressive disorders (Hamilton Depression Rating Scale, HAM-D-24).Results: The total score of SSCI was 49.9 ± 14.3, and 48.5% of the patients checked “rarely” to “sometimes.” For the total sample, the full model accounted for 47.8% of the variance in stigma (P < 0.05). Higher UPDRS-III scores, longer course of disease, younger age, tremor-dominant subtype, and higher depression scores were significantly associated with stigma among individuals with PD.Conclusion: Our finding suggested a mild-to-moderate level of stigma in patients with PD. Tremor-dominant subtype, longer course of disease, younger age, severe motor symptoms, and depression are the predictors of stigma in PD.

This study investigates articles in the SSCI written in the English language and published in the ‘Education & Educational Research’ area between 1980 and 2019. In the study, bibliometric methods were used to detect the number of SSCI articles published worldwide, and also the articles with a Turkish author address entered, meaning at least one author provided Turkey as their location. In addition, analysis was conducted according to various variables (e.g., research areas, publication year, number of authors, and source titles). The bibliometric data were obtained from the Web of Science Core Collection database. With regards to the ‘Education & Educational Research’ area, the analysis indicated the dominance of English-speaking countries in terms of the number of SSCI-indexed articles and those that had been cited the most. This finding appears to be affected by the majority of journals indexed in SSCI only accepting articles written in the English language. In terms of the number of SSCI articles published in the area of ‘Education & Educational Research’, Turkey was shown to be ranked seventh worldwide. Within Turkey, the number of SSCI articles for the ‘Education & Educational Research’ area ranked second, after ‘Business & Economics’. In comparison to the overall worldwide trend, the study's findings suggest that Turkish researchers have a tendency towards publishing their articles in mainly Turkey-originated journals with low impact factors. Factors that may affect this tendency and the potential implications of these findings are discussed, together with the limitations of the study and suggestions for further research.

Copyright of Tourism Tribune / Lvyou Xuekan is the property of Tourism Institute of Beijing Union University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Physical Education / Tiyu Xuekan is the property of Journal of Physical Education Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The current study identified research trends and theory regarding social media influencers. By searching journals related to social media influencers in the Social Sciences Citation Index and Sciences Citation Index Expanded database in the 20-year period between January 2000 and December 2019, we collected 237 research articles pertaining to social media influencers. From an analysis of these articles, we mapped research trends and identified highly influential articles. The theories used in social media influencer research were also identified. The results provide fundamental insights into research on social media influencers. [ABSTRACT FROM AUTHOR]

This paper details a nonlinear Sliding Mode Control (SMC) based Sub-Synchronous Resonance (SSR) mitigation method for Doubly Fed Induction Generator (DFIG) based wind turbines interconnected to series compensated transmission systems. The proposed method is used to control the rotor side converter to mitigate SSR while ensuring decoupled torque and reactive power control ability of the DFIG is maintained. The proposed method is implemented on the detailed DFIG wind turbine model provided in the RTDS platform for validation via simulations. Results obtained indicate the controller is successful at damping SSR when tested under varying compensation levels and wind speeds. [ABSTRACT FROM AUTHOR]

The purpose of this paper is to analyze and explore the research studies on Big Data in relation with Artificial Intelligence domain, which published in Peer Review Journals and indexed in Web of Science Core Collection for the period of 2008-2019 years. The publication data for our research analysis "Big Data in relation with Artificial Intelligence" has been derived from the Web of Science (WoS) Core Collection database (Indexes included SCI Expanded and SSCI). The Bibliometric Analysis Methods is applied for the study in order to find out the relations between two domains and to investigate the status of scientific development level in the research era. Therefore, our research concentrates and highlights the current issues discussed and studied by the scholars around the globe. This paper would useful for researchers to show the publication trends on big data in relation with artificial intelligence research outcomes in highly reputable SCI-Exp and SSCI journal (ranked by WoS). [ABSTRACT FROM AUTHOR]

• A PV farm installed close to a wind farm is shown to effectively damp SSO. • Reactance crossover and the Nyquist criterion are used to analyze the risk of SSO. • Instabilities predicted by the two methods are validated with EMT simulations. • Both methods are able to predict SSO. • The Nyquist criterion performs better regarding estimating oscillation frequencies. As more power electronics are introduced into the power system, its stability is impacted, e.g., through undesired interactions. One such interaction is called sub-synchronous control interaction (SSCI), an example being an interaction between a DFIG wind farm and a series compensated line. In this paper, two methods are used to assess the risk of SSCI: the reactance crossover method, and the Nyquist criterion. The analysis is performed on three case studies: one system based on the IEEE First Benchmark System, and the other system is modelled as a typical Swedish transmission system with two different degrees of series compensation. Both methods predict SSCI in all three case studies, with the Nyquist criterion being able to predict the oscillation frequency more accurately. To mitigate the sub-synchronous oscillations, a PV farm is implemented and placed in parallel to the wind farm. The performed simulations show that it is able to damp the oscillations successfully in all case studies. [ABSTRACT FROM AUTHOR]

The purpose of this article is to assess the most cited articles in international journals that their subjects are auditing directly to the scope of developments in auditing. In line with this purpose, primarily the journals about accounting education directly in Scopus 3 journals (Auditing, International Journal of Auditing and Current Issues in Auditing) were determined. The scope of this research is the most cited the first 25 articles in Scopus for each journal which published in 2008-2017. These articles were investigated with content analysis. As a result, the content of the studies seems to be mainly composed of the Sarbanes-Oxley Act and its impacts, the quality of the audit, and the PCAOB reports and impacts. To the number of authors, the most articles were written by three or more person, to the authors' intuitions the most institutions were from USA. It was seen that the highest impact per publication journal was "Auditing", and the lowest impact per publication journal was "Current Issues in Auditing". [ABSTRACT FROM AUTHOR]

This paper presents a bibliometric analysis of highly cited articles published in the Web of Science category "Education and Educational Research" in the Social Science Citation Index (SSCI). A total of 2091 journal articles published in this category and cited more than 100 times up to the end of the year 2016 were retrieved as highly cited articles. Distributions of highly cited articles per publication year, journals, institutions and countries were analysed, as well as the citation life cycle of the top-cited articles. The USA, its institutions and researchers are the absolute leaders in the category of Education and Educational Research according to the results of the conducted analysis. [ABSTRACT FROM AUTHOR]

Central Asia currently plays an important role on the global stage due to its geographical position and the region has been receiving increased research attention. We conducted a bibliometric analysis for the years 1900–2016 to evaluate differences in global research on Central Asia before and after the collapse of the Union of Soviet Socialist Republics (USSR), based on the Science Citation Index Expanded (SCIE) and Social Science Citation Index (SSCI) databases. This paper adopted a comparative analysis approach and summarized publication outputs, subject categories, country productivity, collaborations, title keywords and institution productivity on Central Asia before and after the collapse of the USSR. We analyzed the relationship between global research outputs on Central Asia and relevant impact factors, including the number of tourists, exports of fuel oil and gross domestic product (GDP). Comparing results before and after the collapse of the USSR, our bibliometric analysis revealed the following: (1) publications on Central Asia experienced a meteoric growth and publications in the SCIE played a dominant role after the collapse of the USSR; (2) Geology, Environmental Sciences & Ecology and Paleontology increased the most while Science & Technology—Other Topics, Geography and Anthropology decreased dramatically; (3) research countries became increasingly diversified and publications were produced by increasing numbers of international collaborations with a diversification of major collaborators; (4) the focus of title keywords differed before and after the collapse of the USSR; (5) institutions became more diversified and most of them focused on natural sciences; (6) there were high correlations between publications on Central Asia and the number of tourists, exports of fuel oil and GDP. These results reflect the close relationship between scholarly outputs on Central Asia and relevant factors, including the number of tourists, export of fuel oil and GDP. Increasing scholarly outputs on Central Asia therefore had a positive impact on global Central Asia research. [ABSTRACT FROM AUTHOR]

A robust controller is designed based on feedback linearization and sliding mode control to damp sub-synchronous control interaction (SSCI) in doubly fed induction generator (DFIG) wind power plants (WPPs) interfaced with the grid. A feedbacklinearized sliding mode controller (FLSMC) is developed for the rotor-side converter (RSC) through feedback linearization, design of the sliding mode controller, and parameter tuning with the use of particle swarm optimization. A series-compensated 100-MW DFIG WPP is adopted in simulation to evaluate the effectiveness of the designed FLSMC at different compensation degrees and wind speeds. The performance of the designed controller in damping SSCI is compared with proportional-integral controller and conventional sub-synchronous resonance damping controller. Besides the better damping capability, the proposed FLSMC enhances robustness of the system under parameter variations. [ABSTRACT FROM AUTHOR]

This study presents a bibliometric analysis of the top five economics journals during the period 2012–2016 and provides helpful insights into the document types, the distribution of country/territories, the distribution of institutions, the geographical distribution of authors, the most active authors and their research interests or fields, the co‐authorship network, and global/local cooperation. This paper also provides valuable information about the core historical references and the hottest new papers through co‐citation analysis and citation analysis. A co‐word analysis based on the keywords and thematic noun‐phrases in the titles and abstracts of the sample papers was used to explore the hot research topics in the top five journals (e.g. 'price', 'game', 'consumption', 'income', 'international trade', 'employment', 'monetary policy', 'welfare effects' and 'developing countries'). In addition, a comparative keyword analysis was used to explore the differences in the directions and characteristics of each journal and the changes in research focuses between 'new' and 'old' studies. The analytical methods of this study differ from those of reviews or previous studies, and the results fill the gaps not covered by those works. [ABSTRACT FROM AUTHOR]

Highlights • SSCI of beech-dominated forests was highest in primary forests. • SSCI in thickets with shelterwood trees is nearly as high as in primary forests. • Lowest SSCI was found in National Parks with management ceased 30 yrs ago. • SSCI varied significantly across typical age classes in managed forests. Abstract The high structural heterogeneity of primary forests is assumed to positively affect various ecosystem traits and functions, e.g. biodiversity, resilience and adaptability. Against this background, old-growth forest structures are emulated in many managed forests. To properly emulate such structures, quantitative reference values are required, through which primary forests are characterized. In this study, we used the stand structural complexity index (SSCI), derived from terrestrial laser scanning (TLS), to characterize and compare the structures in European beech (Fagus sylvatica L.) dominated forests along a management gradient, ranging from differently managed stands, over formerly managed but now unmanaged stands to primary forests, which have never been managed. The study objective was to quantify and compare the structural complexity of these forests to give insight into possible reference points for an improved prospective handling of managed forests. The highest stand structural complexity was found in primary forests. While there were no significant structural differences between the managed forests, they were more complex in structure than formerly managed forests that have been set aside as National Parks now. The results also showed that structural complexity significantly differed between the investigated stand age classes. Next to primary forests, thickets growing below sheltering overstory trees in managed forests resulted in high structural complexity values. The findings suggest that specific silvicultural management practices can increase the structural complexity in beech forests. This study may facilitate a 'management for complexity' in silvicultural practice and might lead the way towards a more precise promotion of three dimensional forest structures that are associated with specific forest functions as part of the stand management objectives. [ABSTRACT FROM AUTHOR]

The phase imbalance compensation concept is proposed in literature as an alternative way to mitigate classical subsynchronous resonance (SSR) problems in series-compensated transmission lines. However, a fundamental analysis to determine this concept’s ability to mitigate resonances between a doubly-fed induction generator (DFIG) and a series compensated transmission line, i.e., DFIG-SSR, is not reported in literature. Therefore, the objective of this paper is to investigate to which extent phase imbalance compensation is able to mitigate DFIG-SSR. For the phase imbalance compensation scheme, an analytical model that captures the relation between the level of series compensation, the degree of asymmetry between the compensated phases, and the resulting shift in resonance frequency is developed and validated using time domain simulations. Then, an optimisation framework is developed to search for an adequate level of compensation asymmetry, capable of mitigating the adverse interactions. The optimisation allows us to show that, even with the best set of parameters, phase imbalance compensation is not suitable for mitigating DFIG-SSR. The analytical model enables us to explain the underlying physical reasons for this and an attempt is made to explain why this concept is theoretically able to mitigate classical resonance issues. Lastly, directions for future research are identified.

The replacement of conventional generation by power electronics-based generation changes the dynamic characteristics of the power system. This results in, among other things, the increased susceptibility to subsynchronous oscillations (SSO). First, this paper discusses three recently emerging SSO phenomena, which arise due to the interactions between (1) a doubly-fed induction generator and a series compensated transmission system; (2) a voltage source converter (VSC) and a weak grid; and (3) nearby VSCs. A fundamental review of these phenomena resulted in the requirement for a reclassification of the existing SSO phenomena. This reclassification is proposed in this work and is based on interacting components identified using participation factor analysis for the distinct phenomena. Second, a critical review of the existing mitigation measures is performed for these phenomena, highlighting the advantages and disadvantages of the solutions. The influence of the wind speed, grid strength, number of wind turbines, and several converter controller parameters are also discussed. To assist equipment manufacturers, control design engineers, and system operators in selecting and designing effective mitigation measures, the existing solutions are categorized in control solutions, hardware solutions, and solutions based on system level coordination. Finally, perspectives on open issues conclude this paper.

Li et al. (2019) used inappropriate searching words and method to publish a bibliometric paper in Water. The results show a huge difference from the results by using an appropriate method. This comment points out each of problems.

Spectral Vegetation Indices (SVIs) have been used to examine variations in vegetation formation and phenology. Lately, researchers and agricultural practitioners have utilized SVIs to examine various soil properties for instance moisture and nutrients. From our review of the literature, there were few comprehensive studies conducted to know whether it is possible or not to predict landscape function indices by using remote sensing technology, and which spectral vegetation index is the best predictor. It has been shown that landscape function indices can be accurately predicted by Normalized Different Vegetation Index (NDVI). Therefore, we attempted to test the ability of selected SVIs to predict landscape function indices (LFA-SSA) in the Mediterranean steppes of Al-Jabal Al-Akhdar, northeast Libya. We used data collected between May and October of 2006 and 2014. A total of 28 sites were chosen to collect the data for both SVIs and LFA-SSA. Simple linear regression was applied between LFA-SSA and SVIs. The results demonstrated that there is a positive linear relationship between LFA-SSC and the selected SVIs. The findings revealed that the Normalized Different Vegetation Index (NDVI) and Modified Soil Adjusted Vegetation Index (MSAVI) acquired from the Landsat Enhanced Thematic Mapper Plus (ETM+) could be utilized in predicting the variability of significant structural and functional qualities of soil and vegetation in the Mediterranean climate.

Background: A bibliometric analysis was completed of the peer-reviewed literature from 1991 to 2015 written by British occupational therapy authors that was indexed in the Science Citation Index-Expanded (SCIExpanded) or Social Sciences Citation Index (SSCI) databases. Methods: “Occupational therapy” and “occupational therapist” were used as keywords to search journal articles’ publication title, abstract, author details, keywords, and KeyWords Plus. One of the authors had to be identified as a qualified occupational therapist with a British affiliation. Results: From 1991 to 2015, 680 journal articles were published by British occupational therapy authors. The top three journals in which authors published were the British Journal of Occupational Therapy, Clinical Rehabilitation, and Disability and Rehabilitation. The five institutions that generated the largest number of occupational therapy articles were the University of Nottingham, Brunel University London, University of Southampton, Queen Margaret University, and the University of East Anglia. British authors often collaborated in the writing of manuscripts with other authors from Australia, the United States, Canada, and Sweden. Conclusion: The quantity of occupational therapy peer-reviewed literature written by British authors has increased over the last 2 decades. British authors have made and continue to make noteworthy contributions to the profession’s body of refereed knowledge at the national and international levels.