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  • SAGE Publications  (16)
  • Ding, Yang  (16)
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  • SAGE Publications  (16)
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  • 1
    Online Resource
    Online Resource
    Beyond correlation: Towards matching strategy for causal inference in Information Science
    SAGE Publications ; 2022
    In:  Journal of Information Science Vol. 48, No. 6 ( 2022-12), p. 735-748
    Details
    In: Journal of Information Science, SAGE Publications, Vol. 48, No. 6 ( 2022-12), p. 735-748
    Abstract: Correlation has become a fundamental method for information science. However, correlations are limited in making concrete decisions. In this article, we detail how causal inference could be utilised in the field of information science. There are six main steps of implementing matching for causal inference, namely, selecting candidate control variables, determining control variables, calculating similarities among all samples, forming control group, examining the performance of control group and estimating causal effects. As an example, this article applies causal inference to investigate whether Nobel Physics award increases the after-award citations. The method is presented in a step-by-step manner so that researchers can reproduce our analysis in the future.
    Type of Medium: Online Resource
    ISSN: 0165-5515 , 1741-6485
    URL: Article
    DOI: 10.1177/0165551520979868
    RVK:
    AN 10100
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2025062-9
    SSG: 24,1
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  • 2
    Online Resource
    Online Resource
    Reference values of biochemical and hematological parameters for Guizhou minipigs
    SAGE Publications ; 2011
    In:  Experimental Biology and Medicine Vol. 236, No. 4 ( 2011-04), p. 477-482
    Details
    In: Experimental Biology and Medicine, SAGE Publications, Vol. 236, No. 4 ( 2011-04), p. 477-482
    Abstract: The pig is not only an economically important livestock animal but is also a valuable model animal for biomedical research and xenotransplantation. Reference values for clinical biochemical and hematological parameters are required for accurate data interpretation while using a pig model. In this study, whole blood samples were collected from 54 healthy Chinese Guizhou minipigs. We analyzed routine biochemical and hematological parameters and special coagulation parameters, including thrombelastography and coagulation factor activities, and have presented the baseline values of these parameters. These data provide valuable information for investigators using minipigs as animal models in biomedical studies and useful physiological data for veterinarians and livestock producers. We also compared all the results for the minipigs with the corresponding data from healthy humans. The bilirubin, uric acid and cholesterol levels of minipigs were significantly lower than those of humans (14%, 0.086% and 48% of human levels, respectively), whereas the serum enzyme levels were much higher than those in humans (e.g. the hydroxybutyrate dehydrogenase and creatine kinase levels of the minipigs were 19- and 8.4-fold higher than the human reference values). The red blood cell counts, platelet counts and white blood cell counts of the minipigs were significantly higher than those of the humans. The coagulation activities of factor VII and factor X were higher in minipigs than in humans. The significant differences observed between minipigs and humans for many of these parameters suggest substantial interspecies disparities in organs and tissues. These differences merit greater attention in biomedical research involving minipigs, particularly in the area of pig-to-human transplantation.
    Type of Medium: Online Resource
    ISSN: 1535-3702 , 1535-3699
    URL: Article
    DOI: 10.1258/ebm.2011.010283
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2011
    detail.hit.zdb_id: 2020856-X
    SSG: 12
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  • 3
    Online Resource
    Online Resource
    Equivalent Seismic Performance Optimization of Steel Structures Based on Nonlinear Damage Analysis
    SAGE Publications ; 2015
    In:  Advances in Structural Engineering Vol. 18, No. 7 ( 2015-07), p. 941-958
    Details
    In: Advances in Structural Engineering, SAGE Publications, Vol. 18, No. 7 ( 2015-07), p. 941-958
    Abstract: An equivalent seismic performance optimization (ESPO) method is proposed in this article based on nonlinear seismic damage analysis, where the constraints and the fitness function of the optimization problem are expressed as the seismic performance index combined with the importance coefficient and the damage index. Two prototype buildings, a 9-story building with steel frame and a 15-story building with steel frame plus steel plate shear wall are optimized using the ESPO method, and the building seismic performance is obtained through incremental dynamic analysis. The analysis results show that the global seismic performance of the optimized building has obviously improved while the building self-weight has been reduced significantly.
    Type of Medium: Online Resource
    ISSN: 1369-4332 , 2048-4011
    URL: Article
    DOI: 10.1260/1369-4332.18.7.941
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2015
    detail.hit.zdb_id: 2026561-X
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  • 4
    Online Resource
    Online Resource
    The psychological typhoon eye effect in responses to terrorism
    SAGE Publications ; 2020
    In:  Journal of Pacific Rim Psychology Vol. 14 ( 2020-01), p. e21-
    Details
    In: Journal of Pacific Rim Psychology, SAGE Publications, Vol. 14 ( 2020-01), p. e21-
    Abstract: Terrorist attacks can occur anywhere. As the threat of terrorism develops, the China-Eurasia Expo held in Ürümqi, China is attracting fewer potential visitors. A nationwide survey of 2034 residents from 31 provinces and municipalities in China was conducted to examine the relation between the distance to respondents’ city of residence from Ürümqi and their levels of concern for safety and security concerning the Expo. The two were found to be positively related: the closer the respondents lived to Ürümqi, the less concerned they were with the safety and security of the Expo. This is consistent with the “psychological typhoon eye” effect, which states that people living closer to the center of an unfortunate event (whether natural or man-made hazards) are less concerned with the event’s negative consequences. This effect appears to hold for terrorism. There are implications of this finding for international counter-terrorism practice, tourism, and research.
    Type of Medium: Online Resource
    ISSN: 1834-4909 , 1834-4909
    URL: Article
    DOI: 10.1017/prp.2020.13
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2377465-4
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  • 5
    Online Resource
    Online Resource
    Dermoid cyst with a congenital sinus tract over the left sternoclavicular joint: a case report and literature review
    SAGE Publications ; 2020
    In:  Journal of International Medical Research Vol. 48, No. 6 ( 2020-06), p. 030006052093498-
    Details
    In: Journal of International Medical Research, SAGE Publications, Vol. 48, No. 6 ( 2020-06), p. 030006052093498-
    Abstract: Dermoid cysts are rare benign tumors that arise from ectopic epiblastic inclusions and account for 0.4% to 1.5% of all tumors. They are usually 1 to 5 cm in size and composed of a pasty semisolid material. The orbital dermoid cyst is the most common type. Dermoid cysts can also occur in the spinal cord, ovaries, and pancreas. We encountered a 24-year-old man with a dermoid cyst over the left sternoclavicular joint. He reported intermittent secretion of a white tofu-like exudate from an underlying congenital sinus tract since birth. The secretion had turned hemorrhagic for the last month and had been accompanied by progressive swelling and pruritus for 1 week. Ultrasonography and magnetic resonance imaging revealed characteristics of a dermoid cyst, and histopathological examination confirmed the diagnosis. The patient underwent surgical excision of the cyst under local anesthesia. The incision healed well with no postoperative complications. Considering that a dermoid cyst has the potential to become infected or progress into squamous cell carcinoma, its removal at an early stage is suggested. Few reports in the literature have described a dermoid cyst that secretes hemorrhagic contents from a congenital sinus tract. We present this case to provide a reference for clinicians.
    Type of Medium: Online Resource
    ISSN: 0300-0605 , 1473-2300
    URL: Article
    DOI: 10.1177/0300060520934984
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2082422-1
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  • 6
    Online Resource
    Online Resource
    Analytical model on progressive collapse resistance of prestressed precast concrete frame under middle column removal scenario
    SAGE Publications ; 2022
    In:  Advances in Structural Engineering Vol. 25, No. 7 ( 2022-05), p. 1583-1608
    Details
    In: Advances in Structural Engineering, SAGE Publications, Vol. 25, No. 7 ( 2022-05), p. 1583-1608
    Abstract: This paper investigates an analytical model on progressive collapse resistance of prestressed precast concrete (PC) frame structures. The analytical model is established based on a sub-frame with two stories and two spans under middle column removal scenario, in which the vertical resistance of two-span beam in each story is obtained according to force equilibrium and deformation compatibility of the beam. The tension-stiffening effect and bond slip of top bars near side joint interface are considered in the model to predict the collapse resistance of the beam at compressive arch action (CAA) stage and tensile catenary action (TCA) stage accurately. Besides, to consider the distinct mechanical behavior of beams in failed span in different stories in the process of progressive collapse, the model is related to the restrained stiffness of beam ends, which is determined according to deformation compatibility and force equilibrium of side column in frame. The accuracy of the analytical model is verified according to the results of tests and numerical simulation. Parametric studies are conducted based on the proposed analytical model to investigate the effects of structural parameters and boundary conditions on vertical resistance of the two-span beam in the failed span. The results show that increasing the length of dissipated segment of top bars can improve the structural ductility in progressive collapse, and increase the TCA capacity. Increasing the initial tension of steel strands can enhance the CAA capacity, but the effect of enhancement is alleviated with the increase of initial tension. The larger restrained stiffness can increase the CAA capacity of beam, and the translation stiffness has a more prompt effect on the vertical resistance of beam than the rotation stiffness.
    Type of Medium: Online Resource
    ISSN: 1369-4332 , 2048-4011
    URL: Article
    DOI: 10.1177/13694332221085314
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2026561-X
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  • 7
    Online Resource
    Online Resource
    A computationally efficient numerical model for progressive collapse analysis of reinforced concrete structures
    SAGE Publications ; 2019
    In:  International Journal of Protective Structures Vol. 10, No. 3 ( 2019-09), p. 330-358
    Details
    In: International Journal of Protective Structures, SAGE Publications, Vol. 10, No. 3 ( 2019-09), p. 330-358
    Abstract: Although marked advancements have been achieved to improve the computer power, progressive collapse analysis of large-scale reinforced concrete structures is still time-consuming or even impractical. In this study, a numerical model is proposed for efficient progressive collapse analysis of reinforced concrete structures. Recent advancements that can accurately and efficiently model the mechanical behavior of structural components are incorporated in the numerical model of reinforced concrete structure. The beams/columns, joint regions, and slabs are modeled by enhanced fiber beam element, macrojoint model, and layered shell element, respectively. In this way, the shear failure of beams/columns, failure of joints, and resistance contribution from floor slab can be taken into account for progressive collapse analysis of reinforced concrete structures. A six-story reinforced concrete frame structure is modeled using the approach proposed in this study. The progressive collapse of the structure is analyzed under column removal and direct blast loading scenarios. For comparison purpose, other popularly used finite element models are also adopted to carry out numerical simulations. The proposed model is proven to yield accurate simulation results with the least cost of time among all models. Based on the proposed model, parametric simulations are performed to investigate effective measures to improve the structural resistance to progressive collapse. It is found that increasing longitudinal reinforcement ratio in beams and columns can increase the catenary action capacity, but hardly increases the compressive arch action capacity. Moreover, the steel mesh reinforcement at top layer of slabs plays a significant role in resisting progressive collapse of reinforced concrete structures, which should be considered in design to resist progressive collapse.
    Type of Medium: Online Resource
    ISSN: 2041-4196 , 2041-420X
    URL: Article
    DOI: 10.1177/2041419619854768
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2019
    detail.hit.zdb_id: 2548257-9
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  • 8
    Online Resource
    Online Resource
    Gastric Ganglioneuroblastoma in an Elderly man: A Case Report and Literature Review
    SAGE Publications ; 2023
    In:  International Journal of Surgical Pathology
    Details
    In: International Journal of Surgical Pathology, SAGE Publications
    Abstract: Background. Ganglioneuroblastoma is a borderline tumor of sympathetic origin that is considered a childhood disease, with the majority of patients occurring in children less than five years old and few patients occurring in adults. There are no treatment guidelines for adult ganglioneuroblastoma. Here, we report a rare patient of adult gastric ganglioneuroblastoma that was completely resected by a laparoscopic approach. Case presentation. A 73-year-old man presented with dull pain in the upper abdomen along with abdominal distension for one month. Gastroscopy examination revealed chronic gastritis and submucosal tumors of the gastric antrum. Endoscopic ultrasonography showed a hypoechoic mass in the gastric antrum arising from the muscularis propria. An abdominal computed tomography scan revealed an irregular soft tissue mass in the gastric antrum with heterogeneous enhancement in the arterial phase. The mass was completely resected by laparoscopic surgery. Postoperative histopathology revealed that the mass contained differentiated neuroblasts, mature ganglion cells and ganglioneuroma components. The pathological diagnosis was ganglioneuroblastoma intermixed, and the patient was determined to be in stage I. The patient received no adjuvant chemotherapy or radiotherapy. At his two-year follow-up, the patient was doing well and showed no signs of recurrence. Conclusion. Despite the rarity of gastric ganglioneuroblastoma as a primary site of origin, it should be considered in the differential diagnosis of gastric masses in adults. Radical surgery is sufficient for the treatment of ganglioneuroblastoma intermixed, and long-term follow-up should be performed.
    Type of Medium: Online Resource
    ISSN: 1066-8969 , 1940-2465
    URL: Article
    DOI: 10.1177/10668969231177703
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2023
    detail.hit.zdb_id: 2070102-0
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  • 9
    Online Resource
    Online Resource
    Study on mechanical efficiency of 65 ml/r fuel pump and its piston optimization
    SAGE Publications ; 2023
    In:  Advances in Mechanical Engineering Vol. 15, No. 9 ( 2023-09)
    Details
    In: Advances in Mechanical Engineering, SAGE Publications, Vol. 15, No. 9 ( 2023-09)
    Abstract: The 65 ml/r fuel pump proposed in this paper is a new type of large-displacement piston pump. The pump is of the roller plunger type construction. This structure enables the pump to have good performance even under high and variable speed conditions. Firstly, force analysis of this pump and establishment of mathematical model of pump mechanical efficiency. The influence of load pressure and speed on mechanical efficiency was obtained by numerical simulation through matlab. Then the prototype was designed and manufactured. The pump outlet pressure, outlet flow rate, and torque were measured on the test bench under various load pressure and speed, and mechanical efficiency of pump at various load pressure and speed was got. The experimental data and simulation are close. 65 ml/r fuel pump has a volumetric efficiency of 99% and a mechanical efficiency of 58.6% at a load pressure of 3 MPa and a speed of 1500 rpm. From experimental results, 65 ml/r fuel pump volumetric efficiency is high, but there is a problem of low mechanical efficiency. The piston of pump will be optimized for improved mechanical efficiency of pump. Then mechanical efficiency of the optimized pump is calculated and compared with mechanical efficiency before optimization. Results show that piston optimization will increase mechanical efficiency of pump.
    Type of Medium: Online Resource
    ISSN: 1687-8132 , 1687-8140
    URL: Article
    DOI: 10.1177/16878132231189676
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2023
    detail.hit.zdb_id: 2501620-9
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  • 10
    Online Resource
    Online Resource
    Bearing fault diagnosis based on kernel independent component analysis and antlion optimization
    SAGE Publications ; 2021
    In:  Transactions of the Institute of Measurement and Control Vol. 43, No. 16 ( 2021-12), p. 3573-3587
    Details
    In: Transactions of the Institute of Measurement and Control, SAGE Publications, Vol. 43, No. 16 ( 2021-12), p. 3573-3587
    Abstract: Fault diagnosis of gearboxes based on vibration signal processing is challenging, as vibration signals collected by acceleration sensors are typically a nonlinear mixture of unknown signals. Furthermore, the number of source signals is usually larger than that of sensors because of the practical limitation on sensor positions. Hence, the fault characterization is actually a nonlinear underdetermined blind source separation (NUBSS) problem. In this paper, a novel NUBSS algorithm based on kernel independent component analysis (KICA) and antlion optimization (ALO) is proposed to address the technical challenge. The mathematical model demonstrates the nonlinear mixing of source signals in the underdetermined cases. Ensemble empirical mode decomposition is used as a preprocessing tool to decompose the observed signals into a set of intrinsic mode functions that suffers from the problem of redundant components. The correlation coefficient is utilized to eliminate the redundant components. An adaptive threshold singular value decomposition method is proposed to estimate the number of source signals. Then a whitening process is carried out to transform the overdetermined blind source separation (BSS) into determined BSS, which can be solved by the KICA method. However, the reasonable selection of parameters in KICA limits its application to some extent. Therefore, ALO and Fisher’s linear discriminant analysis are adopted to further enhance the accuracy of the KICA method. The separation performance of the proposed method is assessed through simulation. The numerical results show that the proposed method can accurately estimate the number of source signals and attains a higher separation quality in tackling nonlinear mixed signals when compared with the existing methods. Finally, the inner ring fault experiment is conducted to preliminarily validate the practicability of the proposed method in bearing fault diagnosis.
    Type of Medium: Online Resource
    ISSN: 0142-3312 , 1477-0369
    URL: Article
    DOI: 10.1177/01423312211038419
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2021
    detail.hit.zdb_id: 2025882-3
    SSG: 3,2
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