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通过对中文社会科学引文索引（CSSCI）收录《情报资料工作》1998年-2010年共13年的题录及引文数据分析研究，区别于传统文献计量学方法，利用科学知识图谱的研究方法，形象生动地对该期刊做了分析与评价。分别绘制了作者、机构、期刊、关键词和引文知识图谱并深入的分析与解读该刊的知识结构和知识特征。

Strong gravitational lensing （SGL） has provided an important tool for probing galaxies and cosmology. In this paper, we use the SGL data to constrain the holographic dark energy model, as well as models that have the same parameter number, such as the wCDM and Ricci dark energy models. We find that only using SGL is difficult to effectively constrain the model parameters. However, when the SGL data are combined with CBS （CMB＋BAO＋SN） data, the reasonable estimations can be given and the constraint precision is improved to a certain extent, relative to the case of CBS only. Therefore, SGL is an useful way to tighten constraints on model parameters.

In this paper, we reconsider the defining but often overlooked ‘hinge＇ function of megalopolises by analyzing how megalopolises have articulated national and international urban systems in the context of a globalizing knowledge economy. Taking the case of China＇s Yangtze River Delta（YRD） region, we particularly focus on knowledge circulation within and beyond the YRD region by analyzing the pattern and process of knowledge collaboration at different geographical scales during the 2004–2014 period. Results show that the structure of scientific knowledge collaboration as reflected by co-publications has been strongest at the national scale whereas that of technological knowledge collaboration as measured by co-patents has been strongest at the global scale. Despite this difference, the structure of both scientific and technological knowledge collaboration has been functionally polycentric at the megalopolitan scale but become less so at the national and global scales. The ‘globally connected but locally disconnected＇ pattern of Shanghai＇s external knowledge collaboration suggests that the gateway role of the YRD megalopolis in promoting knowledge collaboration at different geographical scales will take time before it is fully realized.

Dear Editors, The merit of coal has been recognized by average people, whereas the value of oil shale has not been realized even by some experts in energy field. Compared to coal, oil shale also has dark looks and giant reserves while the content of ash in oil shale is higher. Owing to organic matter it con- tains, a sort of fuel named shale oil can be extracted via pyrolysis, which resembles crude oil in composition and can be further processed to obtain gas and diesel .

We demonstrate ultralow-threshold thulium-doped, as well as thulium-holmium-codoped, microtoroid lasers on silicon chips, operating at the wavelength of around 2 μm. High quality factor whispering gallery mode （WGM） microtoroid cavities with proper thulium and holmium concentrations are fabricated from the silica sol-gel films. The highly confined WGMs make the microcavity lasers operate with ultralow thresholds, approximately 2.8 μW and 2.7 μW for the thulium-doped and the thuli- um-holmium-codoped microlasers, respectively.

In this paper we propose a new inflation model named （p, q） inflation model in which the inflaton potential contains both positive and negative powers of inflaton field in the polynomial form. We derive the accurate predictions of the canonical single-field slow-roll inflation model. Using these formula, we show that our inflation model can easily generate a large amplitude of tensor perturbation and a negative running of spectral index with large absolute value.

This paper gives a brief introduction to our recent works on photonic crystal （PhC） cavities and related integrated optical structures and devices. Theoretical background and numerical methods for simulation of PhC cavities are first presented. Based on the theoretical basis, two relevant quantities, the cavity mode volume and the quality factor are discussed. Then the methods of fabrication and characterization of silicon PhC slab cavities are introduced. Several types of PhC cavities are pre- sented, such as the usual L3 missing-hole cavity, the new concept waveguide-like parallel-hetero cavity, and the low-index nanobeam cavity. The advantages and disadvantages of each type of cavity are discussed. This will help the readers to decide which type of PhC cavities to use in particular applications. Furthermore, several integrated optical devices based on PhC cavi- ties, such as optical filters, channel-drop filters, optical switches, and optical logic gates are described in both the working principle and operation characteristics. These devices designed and realized in our group demonstrate the wide range of appli- cations of PhC cavities and offer possible solutions to some integrated optical problems.

Inspired by the recent experimental identification of the new isomer with a half-life of （620±150） ns in the very neutron-rich nucleus 180SZr, we apply the projected shell model with axially-deformed bases to discuss possible shapes near the ground state and the nature of the isomer. The structure of the new isomer is investigated by restricting the calculation to prolate and oblate shapes. It is shown that the isomer can be understood as a K-isomer. Meanwhile, the calculation predicts more low-lying high-K configurations, which may be confirmed by future experiments,

We report on second harmonic generation （SHG） in on-chip high-Q （〉10^5） lithium niobate （LiNbO3, LN） microresonators fab- ricated by femtosecond laser micromachining. We examine the efficiency of SHG with either a continuous-wave （CW） or an ultrashort pulsed pump laser. The normalized conversion efficiencies of SHG obtained with the CW and pulsed pump lasers are measured to be 1.35×10-5 m W-1 and 2.30×10-6 m W-1, respectively.