H-index Values Research Articles

Studies on Kyphoplasty over 20 years by science mapping method: Kyphoplasty by science mapping method.

Design:This is a bibliometric analysis. Performed by Scientific Mapping technique. The purpose of the study is to analyze articles on Kyphoplasty. Kyphoplasty is a minimally invasive surgical method. Bibliometrics is the mathematical and statistical quantitative analysis of works. One of the primary uses of bibliometric analysis is scientific mapping.Method:To conduct the bibliometric analysis of the subject of Kyphoplasty, the Web of Science Core Collection database was preferred. After the selection of the data set, the data were filtered; as a result, the study was carried out on 2236 articles. Researchers, journals, articles, institutions, and the studies’ countries were analyzed.Results:According to the number of articles published in Kyphoplasty, China, USA, Germany, Korea, and Italy are among the leading countries. According to the analysis, the authors with the highest h-index value are Yang HL and Hirsch JA. The European Spine Journal and the Spine are the most impactful journals.Conclusions:Our study was carried out with the Science Mapping technique using Bibliometrics software. This type of work has become popular in recent years. Such studies are not common in the field of neurosurgery.

Orthopaedic Foot and Ankle Surgery Leadership Trends: A Cross-Sectional Study of Fellowship Directors and Division Chiefs

Category: Other Introduction/Purpose: Foot and ankle surgery is a growing subspecialty within orthopaedic surgery due to the increasing demand for lower extremity trained specialists. Fellowship directors for foot and ankle surgery are uniquely tasked with the responsibilities of creating an educational experience while teaching trainees to manage lower extremity pathology. Similarly, foot and ankle division chiefs serve as clinical leaders who oversee their department's delivery of lower extremity care while acting as mentors. The primary aim of this study was to quantitatively describe and compare the demographic and professional characteristics of current foot and ankle surgery fellowship directors and division chiefs. Methods: The American Orthopaedic Foot & Ankle Society (AOFAS) fellowship directory for 2021 to 2022 was reviewed for the 48 AOFAS-recognized fellowship programs in the United States. After screening all institutional websites, fellowship directors and division chiefs were directly contacted via email. Surveys were administered between March 31, 2021 and June 1, 2021 to collect demographic, education, and professional data. Publicly accessible online sources such as institutional biographies, media accounts, uploaded curriculum vitae, and the Scopus Web of Science database were accessed to collect any missing information. The H-index value was determined for each leader by accessing the Scopus Web of Science search engine, a database that analyzes peer-reviewed scientific publications with a built-in citation tracking feature. Univariate and bivariate statistical analyses were performed. Results: A total of 42 of the 48 (87.5%) fellowship directors and 18 of the 23 (78.3%) division chiefs responded to the questionnaire. Of the 48 fellowship directors, 45 (93.8%) were male, 43 (89.6%) identified as Caucasian, their average age at leadership appointment was 42.6+-7.5 (range, 32-70) years, and the average time between fellowship graduation and leadership appointment was 9.9+-7.8 (range, 0-36) years. Most of the fellowship directors graduated from OrthoCarolina (10.4%), Oakland Bone and Joint Specialists (Roger Mann) (10.4%), and Mercy Medical Center (8.3%) (Figure 1). Of the 23 chiefs, 22 (95.7%) were male, 20 (87.0 %) identified as Caucasians, their average age at leadership appointment was 41.7+-7.8 (range, 32-53) years, and the average time between fellowship graduation and leadership appointment was 9.8+-6.8 (range, 2-21) years. The average H-index for the chiefs was greater than that of the fellowship directors (18.4 vs 13.4, P=.0373) when controlling for years of training. Conclusion: This is the first study to record professional and demographic characteristics amongst orthopaedic foot and ankle surgery fellowship directors and division chiefs. The utility of this analysis comes from highlighting common attributes of successful leaders within the field for aspiring trainees, while also drawing attention to the lack of diversity within the foot and ankle surgery community.

Worldwide rapeseed (Brassica napus L.) research: A bibliometric analysis during 2011–2021

Rapeseed (Brassica napus L.) is the world's second produced oilseed and accounts for nearly 12% of world major vegetable oil production. For the last 10 years, the production, planting area, and yield of rapeseed have been stable, with improvement of seed quality and especially seed oil content. This paper presented the worldwide rapeseed research by using the bibliometric analysis of papers published during the period 2011–2021. In total, 7617 articles and reviews were included in this analysis. Our results showed that the global publication on rapeseed increased substantially in the past 11 years, and the number of publications of China grew significantly in particular. China was the largest contributor to rapeseed research with higher H-index value and number of citations compared to the other countries. China also had the largest number of leading universities and institutions, of which Huazhong Agricultural University was the most productive. The scientific mapping including co-authorship network of countries/regions and authors, and co-occurrence network of author keywords were analyzed using VOSviewer software. The most common rapeseed research topics included oil, rapeseed meal, yield, biodiesel, fatty acids, salt stress, and proteins, while the current research focused on topics such as: abiotic stress, evolution, expression analysis, phylogenetic analysis, heterosis, polyploidy, and transcriptomics. This paper depicts the knowledge structure of current global rapeseed research that may help direct the future studies for relevant researchers.

Publication trends of research on conjunctival melanoma during 1997-2022: A 25-year bibliometric study.

BackgroundConjunctival melanoma (CM) is a life-threatening ocular tumor with a high rate of local recurrence and metastasis. Our objective is to analyze research trends in CM field and compare contributions from different countries, institutions and authors.MethodsWe extracted all CM-related publications published from 1997 to 2022 from the Web of Science database and applied Microsoft Excel and VOSviewer to review publication data, analyze publication trends, and visualize relevant data.ResultsA total of 708 publications were identified. The United States contributed the most publications (280) and citations (8,781 times) with the highest H-index value (47). The Ophthalmic Plastic and Reconstructive Surgery, British Journal of Ophthalmology, American Journal of Ophthalmology and Cornea were the most productive journal concerning CM, and Shields CL, Shields JA, Jager MJ as well as Finger PT had published the most papers in the field. Keywords were classified into three clusters: clinical research, management-related research and genetic research. The keywords “primary acquired melanosis”, “metastasis” and “BRAF mutations” were most frequently emerged. According to the average appearing year (AAY), targeted therapy (AAY of 2019.0) and nivolumab (AAY of 2018.7) were identified as the main focuses of the field in the near future.ConclusionIn the past 25 years, the United States, Germany, England and the Netherlands held the leading position in the CM research. A group of scholars made important contributions to CM research and will continue to guide cutting-edge research. Treatments that have been shown to be effective for advanced cutaneous melanoma, such as targeted therapy and immunotherapy, are potential focuses for future CM research.

Negligible Specimen Hemolysis Is Observed With Sarstedt S-Monovette Coagulation Tubes in Aspiration Mode.

We aimed to compare the levels of hemolysis in the blood collected using the vacuum and aspiration modes via Sarstedt S-Monovette coagulation tubes. Forty volunteers were included in the study. Blood samples were collected using two different modes in the S-Monovette citrate tube (Sarstedt AG). Prothrombin time, active partial thromboplastin time, fibrinogen, and D-dimer analyses were performed using the STA-Compact-Max 3 analyzer (Stago). The hemolysis levels of the samples were measured by both Stago's semiquantitative hemolysis index (H-index) module and the quantitative H-index measurement of the Roche cobas 6000 (Roche Diagnostics) analyzer. Roche's quantitative H-index values were statistically significantly lower in the aspiration mode. No clinically significant difference was observed between coagulation test results. Using the S-Monovette citrate tubes can reduce spurious hemolysis and improve patient safety.

Increased eHSP70-to-iHSP70 ratio in prediabetic and diabetic postmenopausal women: a biomarker of cardiometabolic risk.

Decreased estrogen levels in menopause are associated with anthropometric, metabolic, and inflammatory impairments, predisposing women to cardiometabolic risk factors such as diabetes. Menopause and type two diabetes (DM2) are marked by altered heat shock response (HSR), shown by decreased expression of the 70-kDa heat shock protein in the intracellular milieu (iHSP70). While iHSP70 plays an anti-inflammatory role, extracellular HSP70 (eHSP70) may mediate pro-inflammatory pathways and has been associated with insulin resistance in DM2. Considering the roles of these proteins according to localization, the eHSP70-to-iHSP70 ratio (H-index) has been proposed as a biomarker for HSR. We, therefore, evaluated whether this biomarker is associated with glycemic and inflammatory status in postmenopausal women. In this transversal study, 36 postmenopausal women were grouped according to fasting glycemia status as either the control group (normoglycemic, ≤ 99mg/dL) or DM2 (prediabetic and diabetic, glycemia ≥ 100mg/dL). DM2 group showed higher triglyceride/glucose (TyG) index and plasma atherogenic index (PAI), both of which are indicators of cardiometabolic risk. In addition, we found that the eHSP70-to-iHSP70 ratio (plasma/peripheral blood mononuclear cells-PBMC ratio) was higher in the DM2 group, compared with the control group. Furthermore, blood leukocyte and glycemia levels were positively correlated with the eHSP70-to-iHSP70 ratio in women that presented H-index values above 1.0 (a.u.). Taken together, our results highlight the eHSP70-to-iHSP70 ratio as a biomarker of altered HSR in DM2 postmenopausal women.

Digital Transformation

This paper aims to provide an overview of academic research within the field of digital transformation. The authors conduct a bibliometric analysis using VOSviewer, Harzing’s Publish or Perish, and SciMAT to evaluate and visualize the bibliographic materials. The analysis focuses on journals, papers, researchers, institutions, and countries, using bibliometric indicators such as productivity, citations, H-index values, and TLS values. Graphical analyses illustrate co-authorship, co-occurrence of keywords, evolution of research topics, and network of influential researchers within digital transformation. The results complement each other and show that Germany, the United States, and the Russian Federation are the most influential countries in digital transformation research. Additionally, the results suggest that collaboration within this field is still weak, and many research topics are just beginning to emerge. This research provides a summary of most of the key aspects in digital transformation research and helps lay groundwork to shape the future of this growing field.

Academic career outcomes of Orthopedic Research and Education Foundation resident grant recipients.

The Orthopedic Research and Education Foundation (OREF) awards resident research grants to orthopedic surgery residents. Outcomes are lacking for OREF resident grant recipients including academic career choice and scholarly productivity. This was a retrospective cohort study of OREF resident grant recipients (2012-2020). The percentage of OREF resident grant recipients selecting an academic career was compared with the percentage of academic orthopedic surgeons in the United States via a χ2 test. Two hundred and seventy-six OREF resident grants were issued to 272 orthopedic surgery residents at 73 programs. OREF resident grant recipients were predominantly male (79.0%) and Caucasian (70.2%). OREF resident grant recipients had greater women representation than the national cohort of orthopedic surgery residents (21.0% vs. 16.0%, p = 0.030) with similar proportions of underrepresented racial minorities (29.8% vs. 27.2%, p = 0.351). OREF resident grants consisted of clinical (69.6%) and basic/translational science (30.4%) research and were awarded mostly for sports medicine (25.4%), trauma (18.8%), and adult reconstruction (15.9%) topics. The average h-index was 8.5 ± 9.2 resulting from 29.5 ± 51.2 manuscripts. The majority of OREF resident grant recipients selected an academic career, which was higher than the national benchmark of academic orthopedic surgeons (63.8% vs. 24.4%, p < 0.001). Two OREF resident grant recipients transitioned to National Institutes of Health research funding (0.7%). Multivariable logistical regression demonstrated two independent characteristics associated with pursuit of a future academic career: female sex (p = 0.042) and higher h-index values (p = 0.002). Procurement of OREF resident grants is associated with pursuit of an academic career.Clinical significance: There is great interest in fostering the next generation of orthopedic surgeon scientists. Results from this study demonstrate the association between receipt of an OREF resident research grant and pursuit of a future career in academic orthopedic surgery.

Bibliometric analysis of publication trends in chordoma research (1992−2021)

ObjectiveTo identify the development and current status of chordoma research. MethodsWe used the bibliometrix tool and VOSviewer to conduct a bibliometrics study involving 2,345 chordoma-related articles and reviews. ResultsPublications steadily increased over time. The USA and Massachusetts General Hospital were the country and institution, respectively, making the most contributions. Gokaslan, Z.L. had the greatest number of publications, as well as the most citations and h-index values. “Chordoma: Incidence and survival patterns in the United States, 1973–1995,” published in Cancer Causes and Control (2001), was the most cited study written by McMaster et al. The journals, World Neurosurgery and Journal of Neurosurgery had the most number of publications and the most cited publications. Keyword analysis showed that immune therapy, chemotherapy, and the Brachyury-related study were becoming more popular. ConclusionsThe present study provided both a comprehensive insight of chordoma research, as well as a description of future areas of research.

Mapping global trends in adipose-derived mesenchymal stem cell research: A bibliometric analysis using scopus database

Background and objectiveAdipose-derived mesenchymal stem cells (AdMSC) are multipotent adult mesenchymal cells isolated and cultured from the stromal vascular fraction derived from adipose tissue. The present study was conducted to analyze the global trends in AdMSC research using bibliometric and visual analysis tools. MethodsThe literature search was done on February 13, 2022, using appropriate keywords and inclusion-exclusion criteria from the Scopus database. The extracted data were retrospectively analyzed and visualized using Bibliometrics and R packages and VOSviewer. ResultsPreliminary analysis identified 1569 documents from the Scopus database published between 2005 and 2021. The average citations received per document was 26.51, whereas the average citations per year per document was 3.347. In addition, the selected documents had an h-index value of 90. China was the most productive country, whereas Seoul National University (South Korea) was identified as the most productive institute/university in AdMSC research. In addition, the National Natural Science Foundation of China funded the most research studies in AdMSC research. ConclusionThe findings from this study indicate a progressive increase in interest among the research community towards AdMSC, suggesting promising prospects in the coming years.

Nomogram Using Host and Tumor Factors to Predict Survival in Individual Patients with Well Differentiated Thyroid Cancer

<h3>Purpose/Objective(s)</h3> Patients with well-differentiated thyroid cancer generally have an excellent outcome. Nonetheless, a subset of patients will do poorly. Traditionally, the TNM system is used to counsel patients on probability of survival. However, this system applies to a population rather than individual patients. In contrast, nomograms utilize several variables to determine outcome in individual patients. The objective of our study was to use tumor and host factors in patients with well differentiated thyroid cancer to develop a nomogram predictive of disease-specific survival (DSS). This would lead to a better guided and personalized assessment of patient's treatment and follow up and would allow us to better counsel patients moving forward. <h3>Materials/Methods</h3> From our departmental thyroid database of 6,259 patients treated with surgery from 1986 to 2015, we excluded patients with incomplete staging data (n=15). Our final cohort consisted in 6,244 patients. Tumor and host variables predictive of survival were identified and used to design a nomogram for DSS. The previously published pretreatment peripheral blood H-index (([Neutrophils x Monocytes]/[Lymphocytes x Hemoglobin X Albumin]) x 100) was used as the surrogate marker for the host status. Multiple imputation was implemented on missing data of the peripheral blood variables. Unadjusted and adjusted HRs were calculated using the Cox proportional hazard model for DSS. A p-value <0.05 was considered significant. Nomograms predictive of 5, 10, 15 and 20-year DSS were created from the model. Statistical analysis was performed using the R software package (http://www.r-project.org). <h3>Results</h3> Median age was 47.4 years (IQR 37.1-58.0), 72% were female. Most cases were Papillary Carcinomas (95.4%), and 2.4% Follicular Carcinomas and 2.2% Hurthle Cell Carcinomas. Following AJCC 8^th Edition, 88.0% were Tx/T1/T2, 68.9% were Nx/N0, and 98.7% M0. H-index values ranged from 0.04 to 18.38 (median 1.17, IQR 0.79-1.75). Increased age, non-papillary carcinoma pathologies, higher TNM, and higher H-index were significantly associated with worse DSS in the multivariable analysis. Based on this model, predictive nomograms were created. Age and distant metastasis were the variables that conferred a higher score in the nomogram and therefore the ones associated with poorer outcomes. H-index incorporated additional stratification of patient's risk by adding information about the host to the generally used tumor factors. <h3>Conclusion</h3> Using tumor and host factors, we have created a nomogram which predicts survival in individual patients with well differentiated thyroid cancer. By having a more precise prediction of each patient's outcomes we can better guide treatment, follow up and counseling.

Trends in the Use of Augmented Reality, Virtual Reality, and Mixed Reality in Surgical Research: a Global Bibliometric and Visualized Analysis.

There have been many major developments in the use of augmented reality (AR), virtual reality (VR), and mixed reality (MR) technologies in the context of global surgical research, yet few reports on the trends in this field have been published to date. This study was therefore designed to explore these worldwide trends in this clinically important field. Relevant studies published from 1 January 2009 through 13 October 2020 were retrieved from the Science Citation Index-Expanded (SCI-E) tool of the Web of Science database. Bibliometric techniques were then used to analyze the resultant data, with visual bibliographic coupling, co-authorship, co-citation, co-occurrence, and publication trend analyses subsequently being conducted with GraphPad Prism 8 and with the visualization of similarities (VOS) software tool. There is no patient and public involved. In total, 6221 relevant studies were incorporated into this analysis. At a high level, clear global annual increases in the number of publications in this field were observed. The USA made the greatest contributions to this field over the studied period, with the highest H-index value, the most citations, and the greatest total link strength for analyzed publications. The country with the highest number of average citations per publication was Scotland. The Surgical Endoscopy And Other Interventional Techniques journal contributed the greatest number of publications in this field. The University of London was the institution that produced the greatest volume of research in this field. Overall, studies could be broadly classified into five clusters: Neurological Research, Surgical Techniques, Technological Products, Rehabilitative Medicine, and Clinical Therapy. The trends detected in the present analysis suggest that the number of global publications pertaining to the use of AR, VR, and MR techniques in surgical research is likely to increase in the coming years. Particular attention should be paid to emerging trends in related fields including MR, extended reality, head-mounted displays, navigation, and holographic images.

Publication Trends of Research on Polypoidal Choroidal Vasculopathy During 2001-2020: A 20-Year Bibliometric Study.

IntroductionPolypoidal choroidal vasculopathy (PCV) is a special subtype of AMD, which is one of the leading threats to vision health worldwide. At this time, many aspects of PCV, from how it works to potential treatments, remain a mystery. In this study, we explored the frontier researches and revealed the study trends within the study of PCV.MethodsWe collected all the publications in this field from 2001 to 2020, analyzed trends within them, and defined the contributions of various countries/regions, institutions, authors, and journals. Additionally, VOSviewer software was used to define the hot keywords in this field.ResultsA total of 1,190 publications were ultimately examined; We found that PCV is becoming an increasingly relevant topic of research, and that Japan has contributed the most publications (428), the most citations (14,504 in total), and the highest H-index value (62) to the field. Our keywords analysis was classified into four clusters to show the hotspots within the study of PCV, namely mechanism-related, imaging-related, prognosis-related, and therapy-related topics. The average years in which the keywords appeared the most were also calculated, and we identified anti-VEGF therapy, anti-complement therapy and angiography as having been the main focus in recent years.ConclusionsThese results helped clarify the comprehensive research progress that has been made as well as the future trends in the study of PCV, which can assist and guide future research.

The decline of educational hypergamy in the former Yugoslav republics

This paper examines marital market preferences and opportunities, given the gender asymmetry of education and the limited supply of equally educated partners (especially in the higher education segment), and explores selection patterns resulting from new composite changes for at-risk populations entering into a marriage. Specifically, we are researching mixed marriages by education and changes in the patterns of that selection in the former Yugoslav republics. The assessment of the impact of changes in educational characteristics by gender on patterns of marital pairing and the reduction of the level of educational hypergamy was performed by analysing the movement of F-index and H-index values from 1970 to 2020 and their correlation coefficient. The results showed that educational hypergamy is declining in all countries and that the decline in hypergamy is positively associated with the predominance of women among highly educated individuals.

Gender Differences in Academic Productivity within Pediatric Dentistry Departments in TurkeyDentistry Departments in Turkey

Objective: To investigate the differences in the academic productivity of male and female academicians from the departments of pediatric dentistry in the Faculties of Dentistry in Turkey. Methods: A search was made of international studies indexed in PubMed published up until January 2021 by a total of 241 academicians in the Departments of Pediatric Dentistry of 79 Faculties of Dentistry in Turkey. The total number of international publications for each faculty member was obtained from the institutional websites and thorough searches of PubMed and Web of Science. H-index and the number of citations were established through an advanced search of the Web of Science. Results: The study included 241 faculty members, consisting of 62 (25.7%) males and 179 (74.3%) females, from 79 faculties of dentistry. Male academicians had a statistically significantly larger number of citations from their publications indexed in PubMed than their female counterparts (p = 0.003). An examination of the h-index values from the Web of Science database revealed that male faculty members had significantly higher h-indices than female faculty members (p = 0.005). Conclusions: Although a majority of academicians in pediatric dentistry are female, large differences exist between female and male faculty members in citations and h-indices.

Influence of sex, age and length of service on scientific productivity of medical research institution staff

Aim. To assess the influence of sex, age and length of service on scientific productivity (h-index in the RSCI, Scopus and Web of Science) of researchers of the National Medical Research Center for Therapy and Preventive Medicine.Material and methods. The study sample was formed from the staff of the National Medical Research Center for Therapy and Preventive Medicine and consisted of scientists of various ranks. The study included 147 people (women, 103; men, 44); Information was collected on their age, education, length of service, academic degree, the position held and author-level metrics — the h-index, obtained from three abstract and citation databases — RSCI, Scopus and Web of Science. All study participants were divided into groups by sex and age categories — young (≤39 years), middle-aged (men, 40-60 years; women, 40-55 years) and older (men &gt;60 years old; women &gt;55 years).Results. Analysis showed that 70,1% of the research team consists of women; 60% — young and middle-aged scientists, and 40% — older people. Among male researchers, compared with women, there are more doctors of science and high h-index values in the RSCI, Scopus and Web of Science. H-index value in the RSCI among male researchers is 47,3% due to the age and work duration at the National Medical Research Center for Therapy and Preventive Medicine, and among female researchers, 42,8% due to academic degree and length of service. The h-index in Scopus in men is influenced by age, in women — by the presence of an academic degree, which explain, respectively, 19,7 and 18,1% of its variability. H-index value in the Web of Science in men is associated with the work duration, while in women, with an academic degree and length of service, which explain, respectively, 24,4 and 21,1% of its variance.Conclusion. Women and young and middle-aged scientists prevail in research team pattern of the National Medical Research Center for Therapy and Preventive Medicine. However, male researchers make a more significant contribution to scientific productivity, assessed by the h-index in the RSCI, Scopus and Web of Science. Age and length of service have the greatest influence on scientific productivity for male researchers, while for women — presence of academic degree and length of service. It is necessary to continue research on the study of individual, motivational and institutional factors affecting the scientific productivity.

Mapping Knowledge Structure and Themes Trends of Osteoporosis in Rheumatoid Arthritis: A Bibliometric Analysis.

Background: Rheumatoid arthritis is a chronic disabling disease characterized by chronic inflammation, articular cartilage destruction, and reduced bone mass. Multiple studies have revealed that the development of osteoporosis in rheumatoid arthritis (RA; ORA) patients could be led to a reduced quality of life and increased healthcare costs. Nevertheless, no attempt has been made to analyze the field of ORA research with the bibliometric method. This study aimed to provide a comprehensive overview of the knowledge structure and theme trends in the field of ORA research from a bibliometric perspective.Methods: Articles and reviews regarding ORA from 1998 to 2021 were identified from the Web of Science database. An online bibliometric platform, CiteSpace, and VOSviewer software were used to generate visualization knowledge maps including co-authorship, co-citation, and co-occurrence analysis. SPSS, R, and Microsoft Excel software were used to conduct curve fitting and correlation analysis, and to analyze quantitative indicators, such as publication and citation counts, h-index, and journal citation reports.Results: A total of 1,081 papers with 28,473 citations were identified. Publications were mainly concentrated in North America, Western Europe, and Eastern Asia. Economic strength is an important factor affecting scientific output. The United States contributed the most publications (213) with the highest h-index value (46) as of September 14, 2021. Diakonhjemmet Hospital and professor Haugeberg G were the most prolific institution and influential authors, respectively. Journal of Rheumatology was the most productive journal concerning ORA research. According to the burst references, “anti-citrullinated protein antibodies” and “preventing joint destruction” have been recognized as the hot research issues in the domain. The keywords co-occurrence analysis identified “teriparatide,” “interleukin-6,” “Wnt,” and “vertebral fractures” as the important future research directions.Conclusion: This was the first bibliometric study comprehensively summarizing the trends and development of ORA research. Our findings could offer practical sources for scholars to understand the key information in this field, and identify the potential research frontiers and hot directions in the near future.

Bibliometric analysis of global research trends on male osteoporosis: a neglected field deserves more attention

Male osteoporosis is increasing as a serious health problem worldwide with the aging of population. However, a comprehensive understanding of the current status and future trends in this field is lacking to date. The goal of the present study was to summarize and visualize the knowledge framework, research hotspots, and emerging trends of male osteoporosis research based on the bibliometric method. Scientific publications regarding male osteoporosis from 1998 to 2020 were downloaded from the SCIE database. VOSviewer, CiteSpace, and online bibliometric website were used for this study. The main analyses include cooperative relationships between countries/institutions/authors, co-citation analysis of authors/journals, and co-occurrence analysis of keywords/subject categories, as well as analyses on keyword/reference bursts. A total of 3243 publications with 128,751 citations were identified. Despite experiencing a period of increase in the number of publications, incentives for conducting male osteoporosis research seem to have decreased during recent years. The USA has the most prominent contributions, as reflected by most publications and the highest H-index value. Oregon Health and Science University was the most prolific institution within this domain. The most influential academic journal was Osteoporosis International. Keywords were categorized into four clusters: basic research, epidemiology and risk factors, diagnostic studies, treatment and fracture prevention. Burst keyword detection suggested that the following research directions including "obesity," "zoledronic acid," "DXA," "inflammation," "fall," "microarchitecture," and "sarcopenia" remain research hotspots in the near future and deserve our further attention. This is the first bibliometric analysis that provides a comprehensive overview of male osteoporosis research, which may provide helpful references for investigators to further explore hot issues in this field.

Research status and development trends in the field of marine environment corrosion: a new perspective.

Corrosion had aroused extensive concern and attention because it was an unavoidable problem for marine equipment and facilities in service. However, the current status and development trend of marine environment corrosion research had seldom been systematically studied. Therefore, it was encouraged to use bibliometrics and information visualization analysis methods to conduct bibliometric analysis of related publications in the field of marine environment corrosion based on HistCite, CiteSpace, and VOSviewer software programs. Compared with the traditional comments of researchers in this field, this research provided a direction for the development of quantitative analysis and visualization of marine environment corrosion on a large scale. The results showed that the overall focus of research in the field of marine environment corrosion continued to increase from 1900 to 2019. China had the highest publication productivity, the USA had the highest h-index value and the second highest average citations per item value, Materials Science was the most popular subject category, Corrosion Science was the main journal and Melchers RE was the author with the most output contributions. This research also exhibited four hot spots in this field. In addition, this work could help new researchers to find research directions and identify research trends and frontiers in the field of marine environment corrosion by tracing the research hotspots of topic categories, countries, institutions, journals, authors, and publications in recent years.

Design data collection tool and weighting classification of authors in their scholar outputs based on percent-contribution-indicated (PCI) method

The advancement of information technology development makes it researchers easier to read papers shortly after they are published online. A paper will be cited, usually within one to two years after the paper is published. The number of citations of a researcher’s papers is currently an indicator of his/her scholarly impact. The measurement widely used is the H-index. The calculation of the impact of the researcher using the H-index method does not calculate the weighted classification of the author’s position on each paper. The main author or co-authors score have the same weighted citation weighted of an article cited. The weighting of the number of citations obtained by the author has begun to get attention by Scientometricians in recent years. This is done to differentiate the value of the impact obtained by the main author and co-author. Since 2015, the Government of Indonesia has awarded a number of awards to Indonesian researchers who have the greatest impact value. Assessment of the impact value of researchers in Indonesia uses the Sinta Index version 1 (SI-1) which is based on the researcher’s H-index value in Scopus, GS, and WoS. Problems arise when a researcher with most of his papers as a co-author gets an award, while another researcher who has a position as the main author does not get the award, even though the number of papers and the number of citations obtained are relatively similar. In 2020, we found that Sinta Index was upgraded, namely Sinta Index version 2 (SI-2). There are some differences between versions 1 and 2. This paper will propose a mechanism for calculating the impact of researchers using the weighting of the investigator’s position based on the percent-contribution-indicated (PCI) method. The data source used was the Scopus database. To get and classified the source data, we developed a tool using API. For the rank of the researcher, we used data from the Sinta Index website. Collection software design created using PHP and Mysql. From the research results, it was found that the correlation test by Pearson’s Method of the H-index values of APW and Scopus is 0,44; APW vs GS (0,39) and GS vs Scopus is 0.95. This means that APW method has a weak correlation with the H-index values of GS and Scopus. APW is independent of the two h-index calculations.