137,557 research outputs found
Coauthor prediction for junior researchers
No full textResearch collaboration can bring in different perspectives and generate more productive results. However, finding an appropriate collaborator can be difficult due to the lacking of sufficient information. Link prediction is a related technique for collaborator discovery; but its focus has been mostly on the core authors who have relatively more publications. We argue that junior researchers actually need more help in finding collaborators. Thus, in this paper, we focus on coauthor prediction for junior researchers. Most of the previous works on coauthor prediction considered global network feature and local network feature separately, or tried to combine local network feature and content feature. But we found a significant improvement by simply combing local network feature and global network feature. We further developed a regularization based approach to incorporate multiple features simultaneously. Experimental results demonstrated that this approach outperformed the simple linear combination of multiple features. We further showed that content features, which were proved to be useful in link prediction, can be easily integrated into our regularization approach. © 2013 Springer-Verlag
Zuoxiao Lyu - Doctor of Musical Arts - Doctoral Recital
No full textSonata in D minor, K. 1; Sonata in D minor, K. 9; Sonata in D minor, K. 141 / Domenico Scarlatti (1685-1757) -- Sonata No. 2 in B–flat Minor, Op. 35: Grave-Doppio movimento; Scherzo; Marche funebre: Lento; Finale: Presto / Frédéric Chopin (1810-1849) -- Gaspard de la nuit: Odine; Le Gibet; Scarbo / Maurice Ravel (1875-1937)Music, Moores School o
Dataset for "Roles of surface forcing in the Southern Ocean temperature and salinity changes under increasing CO2: perspectives from model perturbation experiments and a theoretical framework"
No full textReference: Kewei Lyu, Xuebin Zhang, John A. Church, Quran Wu, Russell Fiedler, and Fabio Boeira Dias (2022), Roles of surface forcing in the Southern Ocean temperature and salinity changes under increasing CO2: perspectives from model perturbation experiments and a theoretical framework, Journal of Physical Oceanography, https://doi.org/10.1175/JPO-D-22-0095.
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Spatial Localization of Anterior Precuneus for Bodily Self Validated with Brain Stimulation
No full text# SELF-project-Neuron: Causal Evidence for the Processing of Bodily Self in the Anterior Precuneus---The repository contains the group-based ROI of self-hot electrodes and self-cold electrodes in the posteromedial cortex, and some key customized codes for generating the results of paper.## Description of the data and file structure- ROIsThe two nifti files are group-based ROIs from the study. With brain stimulation, we found a distinct area in the anterior precuneus that can induce robust subjective changes that are related to self-location displacement (sometimes self-dissociation). These stimulation sites are labelled "hot", while the surrounding posteromedial (PMC, or otherwise addressed as posterior cingulate cortex/precuneus) sites that did not induce such an effect are labelled "cold". The method of extracting the native coordinates of these stimulation sites is presented in the extractSbjNativeCoord.m. By transforming the individual brain to the standardized MNI space, we generated the presented ROIs by summarizing the spatial location of these stimulation sites (using 4mm-radius sphere). The ROIs are plotted in the provided figure ROI_vis.png, where the yellow color indicates hot sites. We hope these ROIs will be helpful for people who are interested in studying self-related processing, PMC heterogeneity and many other. - fMRI/FC_results:HCP100Cohort and StanfordCohort respectively contains the group-level seed-based FC results from human connectom project open-access data (N=100, unrelated healthy young adults) and from our own cohort (N=5) where the hot/cold electrodes were identified individually. The subfolders with a suffix of "selfHot"/"selfCold"/"selfContr" respectively means the FC of the hot sites for the bodily self, the cold sites for it and the contrast between them. Among the nifti files, the xxx_0001.nii and xxx_0002.nii are associated with positive and negative contrasts, i.e. positive and negative connectivities, while the prefix of "beta", "con" and "spmT" indicates the image type (i.e., spmT is t-score images, beta is beta-coefficient images). When the suffix of an image is thr, it is a thresholded image based on the cluster-level significance (i.e. significant clusters), and a "**_bin.nii" is a binary image of the thresholded image (i.e. significant cluster mask). The resulting significance table is presented in the *.csv files. - CCEPThe CCEP_result_barplots.Rmd has the code for generating the barplot presented in the Figure 4 of the paper, and the prelim_CCEP_explore5_2.m has the code for generating the brain 3D plots of the figure as well as the inflow/outflow CCEP videos.## Code/SoftwareMATLAB >= 2019aSPM1
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Improved Pseudorandom Generators for AC⁰ Circuits
No full textWe give PRG for depth-d, size-m AC⁰ circuits with seed length O(log^{d-1}(m)log(m/ε)log log(m)). Our PRG improves on previous work [Luca Trevisan and Tongke Xue, 2013; Rocco A. Servedio and Li-Yang Tan, 2019; Zander Kelley, 2021] from various aspects. It has optimal dependence on 1/ε and is only one "log log(m)" away from the lower bound barrier. For the case of d = 2, the seed length tightly matches the best-known PRG for CNFs [Anindya De et al., 2010; Avishay Tal, 2017].
There are two technical ingredients behind our new result; both of them might be of independent interest. First, we use a partitioning-based approach to construct PRGs based on restriction lemmas for AC⁰. Previous works [Luca Trevisan and Tongke Xue, 2013; Rocco A. Servedio and Li-Yang Tan, 2019; Zander Kelley, 2021] usually built PRGs on the Ajtai-Wigderson framework [Miklós Ajtai and Avi Wigderson, 1989]. Compared with them, the partitioning approach avoids the extra "log(n)" factor that usually arises from the Ajtai-Wigderson framework, allowing us to get the almost-tight seed length. The partitioning approach is quite general, and we believe it can help design PRGs for classes beyond constant-depth circuits.
Second, improving and extending [Luca Trevisan and Tongke Xue, 2013; Rocco A. Servedio and Li-Yang Tan, 2019; Zander Kelley, 2021], we prove a full derandomization of the powerful multi-switching lemma [Johan Håstad, 2014]. We show that one can use a short random seed to sample a restriction, such that a family of DNFs simultaneously simplifies under the restriction with high probability. This answers an open question in [Zander Kelley, 2021]. Previous derandomizations were either partial (that is, they pseudorandomly choose variables to restrict, and then fix those variables to truly-random bits) or had sub-optimal seed length. In our application, having a fully-derandomized switching lemma is crucial, and the randomness-efficiency of our derandomization allows us to get an almost-tight seed length
Coccoglypta arbusticola Páll-Gergely & Hunyadi & Chen & Lyu 2019, n. comb.
No full textCoccoglypta arbusticola (Deshayes, 1870) n. comb. (Fig. 6A-D) Helix arbusticola Deshayes, 1870: 20. non Bradybaena arbusticola arbusticola – Yen 1939: 135, pl. 14, fig. 2. non Coccoglypta arbusticola – Chen & Zhang 2004: 155-156, fig. 123. TYPE MATERIAL EXAMINED. — China. Moupin [Muping Zhen, Sichuan], l’Abbé David, 1869, syntype, MNHN-IM-2000-34192. TYPE LOCALITY. — “Principauté de Moupin, Thibet oriental” (from title). REMARKS This species has previously been assigned to the genus Bradybaena, however it surely does not belong to that genus in its present concept. The type species of Bradybaena, B. similaris (Rang, 1831), has a small (c. 1 cm), fragile shell without any distinctive sculpture. However, C. arbusticola n. comb. is larger (shell diameter of syntype: 24.5 mm), and has a thick, finely mamillated shell, reminiscent of those of Coccoglypta. We have examined the lectotype of Eulota arbusticola chrysomphala Möllendorff, 1899 (see Möllendorff, 1899: 70 and Yen, 1939: 135) in the Senckenberg Museum (China: W. Sy-tshuan, Fu-bien-ho, SMF 9159, figs 6E-H). It had a light brown, very finely wrinkled and extremely finely spirally grooved shell, without any signs of mamillae. The aperture is also comparatively much larger in chrysomphala than in arbusticola. Thus, “ Bradybaena ” chrysomphala and Coccoglypta arbusticola n. comb. cannot be subspecies of the same species and must be considered as two distinct species. The single shell in the Senckenberg Museum identified as B. arbusticola and figured by Yen (1939) has a narrower umbilicus and more rapidly growing whorls than the type, and there are also no signs of a mamillated sculpture. Therefore, we here exclude it from the present species. Its true identity remains unknown. Furthermore, the shell figured in Chen & Zhang (2004) also belong to another species, because it has a narrower umbilicus, a dark spiral band, and a more strongly expanded peristome.Published as part of Páll-Gergely, Barna, Hunyadi, András, Chen, Zhe-Yu & Lyu, Zhi-Tong, 2019, A review of the genus Coccoglypta Pilsbry, 1895 (Gastropoda: Pulmonata: Camaenidae), pp. 595-608 in Zoosystema 41 (29) on pages 602-604, DOI: 10.5252/zoosystema2019v41a29, http://zenodo.org/record/372611
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