Do scientists trace hot topics?

Tian, Wei; Li, Menghui; Wu, Chensheng; Yan, Xiao-Yong; Fan, Ying; Di, Zengru; Wu, Jinshan

doi:10.1038/srep02207

Cited by 37 publications

(32 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As Falagas and Alexiou [44] put it, even within a certain discipline there are some citation-intensive areas attracting more – though rather perfunctory – citations. ‘Hot’ topics [45], exciting and popular topics [46,47] and positive outcomes [48] are among the content-related factors that play a role in citation performance of papers. Research topic is believed to be determining in predicting its recognition to such extent that it is a matter of importance of writing highly cited papers [42,43].…”

Section: Introductionmentioning

confidence: 99%

Does open access citation advantage depend on paper topics?

Sotudeh

2019

Journal of Information Science

View full text Add to dashboard Cite

Research topics vary in their citation potential. In a metric-wise scientific milieu, it would be probable that authors tend to select citation-attractive topics especially when choosing open access (OA) outlets that are more likely to attract citations. Applying a matched-pairs study design, this research aims to examine the role of research topics in the citation advantage of OA papers. Using a comparative citation analysis method, it investigates a sample of papers published in 47 Elsevier article processing charges (APC)-funded journals in different access models including non-open access (NOA), APC, Green and mixed Green-APC. The contents of the papers are analysed using natural language processing techniques at the title and abstract level and served as a basis to match the NOA papers to their peers in the OA models. The publication years and journals are controlled for in order to avoid their impacts on the citation numbers. According to the results, the OA citation advantage that is observed in the whole sample still holds even for the highly similar OA and NOA papers. This implies that the OA citation surplus is not an artefact of the OA and NOA papers’ differences in their topics and, therefore, in their citation potential. This leads to the conclusion that OA authors’ self-selectivity, if it exists at all, is not responsible for the OA citation advantage, at least as far as selection of topics with probably higher citation potentials is concerned.

show abstract

Section: Introductionmentioning

confidence: 99%

Does open access citation advantage depend on paper topics?

Sotudeh

2019

Journal of Information Science

View full text Add to dashboard Cite

show abstract

“…Yet, the accuracy of author name disambiguation needs to be constantly challenged and scrutinized whenever publication data is applied. The systematic nature of classification codes and their rich, hierarchical structures make them good approximations of topics in research ranging from scientific discoveries [30,[44][45][46][47][48] to inventions [28,59]. But we need to understand better the degree to which classification codes are good proxies for research topics.…”

mentioning

confidence: 99%

Quantifying patterns of research-interest evolution

2017

View full text Add to dashboard Cite

2Our quantitative understanding of how scientists choose and shift their research focus over time is highly consequential, because it affects the ways in which scientists are trained, science is funded, knowledge is organized and discovered, and excellence is recognized and rewarded [1][2][3][4][5][6][7][8][9]. Despite extensive investigations of various factors that influence a scientist's choice of research topics [8][9][10][11][12][13][14][15][16][17][18][19][20][21], quantitative assessments of mechanisms that give rise to macroscopic patterns characterizing research interest evolution of individual scientists remain limited. Here we perform a large-scale analysis of publication records, finding that research interest change follows a reproducible pattern characterized by an exponential distribution. We identify three fundamental features responsible for the observed exponential distribution, which arise from a subtle interplay between exploitation and exploration in research interest evolution [5,22]. We develop a random walk based model, allowing us to accurately reproduce the empirical observations. This work presents a quantitative analysis of macroscopic patterns governing research interest change, discovering a high degree of regularity underlying scientific research and individual careers."The essential tension" hypothesis set forth by Thomas Kuhn [5] has vividly highlighted the conflicting demands of scientific careers that require both exploration and exploitation [4,8,22].Indeed, career advancement, from promotion to obtaining grants, demands a steady stream of publications, which is often achieved through uninterrupted yet incremental contributions to existing, established research agenda. In contrast, frequent changes in research topics invite risk of failure and decreased productivity. The disciplinary boundaries, arising from such factors as implicit culture, tacit and accumulated knowledge [23,24] and peer recognition [3,25], together with intensifying specialization in science and engineering disciplines [26], make radical shifts, such as moving from chemical biology to high energy physics, extremely unlikely, if at all possible. On the other hand, although steady and focused research portfolio helps scientists stay productive, it potentially undermines chances for originality [8]. Indeed, innovative and novel insights often emerge from encountering new challenges and opportunities associated with venturing into new topics and/or incorporating them into existing research agenda [4,15,20,27,28].Given the broad impact on individual careers and strong implications for science and innovation policy, there is an urgent need for quantitative approaches to understanding the nature of research interest change undertaken by individual scientists throughout their careers. This becomes ever more so with the accelerating scale and complexity of scientific enterprise [2,26,29,30]. A variety of microscopic factors have been identified that drive a scientist's choice of research problems, 3 ranging from age...

show abstract

“…11,12 As a model system of the Ising TLAF, Ca 3 Co 2 O 6 exhibits many intriguing properties, such as field-induced magnetization steps, [15][16][17][18][19] time-dependent magnetic order, 20,21 magnetodielectric coupling 22 and others. [23][24][25][26][27][28] It has a rhombohedral structure (space group R3c) with a hexagonal arrangement of one-dimensional (1D) chains consisting of alternating face-sharing CoO 6 octahedra (OCT) and CoO 6 trigonal prisms (TP) with respectively low-spin (S = 0) and high-spin (S = 2) states of the Co 3+ ions. 26,29 Besides, the large single-ion anisotropy of the Co 3+ TP ions leads to an Ising character of their spins, pointing along the c-axis, while strong FM intrachain and weaker AFM interchain interactions combined with a triangular-lattice arrangement of spin chains give rise to a geometric frustration.…”

mentioning

confidence: 99%

One-dimensional dispersive magnon excitation in the frustrated spin-2 chain system Ca3Co2O6

et al. 2013

View full text Add to dashboard Cite

Using inelastic neutron scattering, we have observed a quasi-one-dimensional dispersive magnetic excitation in the frustrated triangular-lattice spin-2 chain oxide Ca 3 Co 2 O 6 . At the lowest temperature (T = 1.5 K), this magnon is characterized by a large zone-center spin gap of ∼ 27 meV, which we attribute to the large single-ion anisotropy, and disperses along the chain direction with a bandwidth of ∼ 3.5 meV. In the directions orthogonal to the chains, no measurable dispersion was found. With increasing temperature, the magnon dispersion shifts towards lower energies, yet persists up to at least 150 K, indicating that the ferromagnetic intrachain correlations survive up to 6 times higher temperatures than the long-range interchain antiferromagnetic order. The magnon dispersion can be well described within the predictions of linear spin-wave theory for a system of weakly coupled ferromagnetic chains with large single-ion anisotropy, enabling the direct quantitative determination of the magnetic exchange and anisotropy parameters. PACS numbers: 75.30.Ds 75.50.Ee 78.70.Nx 75.10.PqFrustrated antiferromagnets attract much theoretical and experimental attention because of their peculiar magnetic properties. The geometry of the underlying lattice or competing interactions in these systems may give rise to a macroscopic ground-state degeneracy and thus can prevent the onset of a long-range magnetic ordering (LRO) down to the absolute zero temperature, T = 0 K. 1,2 Due to the large ground-state degeneracy, small perturbations, such as further-neighbor interaction, single-ion anisotropy, spinlattice interactions, or magnetic field, can give rise to a variety of magnetically ordered states. 3 Quasi-two-dimensional (2D) triangular-lattice antiferromagnets (TLAF) have been extensively studied as exemplar frustrated spin systems. [4][5][6][7][8] Their magnetic phase diagrams strongly depend on the exchange anisotropy. A typical 2D Heisenberg TLAF with nearest-neighbor interactions orders in the noncollinear "120 • structure" even in the extreme quantum spin-1 2 case. 9 However, the 2D Ising TLAF is known to display no LRO down to T = 0 K. 10 So far, experimental realizations of the Ising TLAF are restricted to a few systems, where ferromagnetic (FM) [11][12][13] or antiferromagnetic (AFM) 14 spin chains are arranged on a triangular lattice in the plane perpendicular to the chains. Among them, compounds with FM chains offer a rich playground to investigate a variety of exotic magnetic phases cooperatively induced by the dimensionality reduction, magnetic anisotropy, geometrical frustration, and magnetic field. 11,12 As a model system of the Ising TLAF, Ca 3 Co 2 O 6 exhibits many intriguing properties, such as field-induced magnetization steps, 15-19 time-dependent magnetic order, 20,21 magnetodielectric coupling 22 and others. [23][24][25][26][27][28] It has a rhombohedral structure (space group R3c) with a hexagonal arrangement of one-dimensional (1D) chains consisting of alternating face-sharing CoO 6 octahedra (OCT) a...

show abstract

Do scientists trace hot topics?

Cited by 37 publications

References 19 publications

Does open access citation advantage depend on paper topics?

Does open access citation advantage depend on paper topics?

Quantifying patterns of research-interest evolution

One-dimensional dispersive magnon excitation in the frustrated spin-2 chain system Ca3Co2O6

Contact Info

Product

Resources

About