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  1. Article: A correlated random effects approach to the estimation of models with multiple fixed effects

    Yang, Yimin

    Economics letters. 2022 Apr., v. 213

    2022  

    Abstract: This paper generalizes two important equivalence results in one-way panel models to models with multiple fixed effects. (1) We show that the correlated random effects estimator obtained via the use of the Mundlak device is identical to the fixed effects ... ...

    Abstract This paper generalizes two important equivalence results in one-way panel models to models with multiple fixed effects. (1) We show that the correlated random effects estimator obtained via the use of the Mundlak device is identical to the fixed effects estimator. (2) A weighted variable addition test is shown to be equivalent to the fully robust Hausman specification test.
    Keywords economics ; statistical models ; testing
    Language English
    Dates of publication 2022-04
    Publishing place Elsevier B.V.
    Document type Article
    ISSN 0165-1765
    DOI 10.1016/j.econlet.2022.110408
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Dairying transformed Mongolia.

    Yang, Yimin

    Nature ecology & evolution

    2020  Volume 4, Issue 3, Page(s) 288–289

    MeSH term(s) Dairying ; Mongolia
    Language English
    Publishing date 2020-03-02
    Publishing country England
    Document type Journal Article ; Comment
    ISSN 2397-334X
    ISSN (online) 2397-334X
    DOI 10.1038/s41559-019-1082-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Efficient estimation of multi-level models with strictly exogenous explanatory variables

    Yang, Yimin

    Economics letters. 2021 Jan., v. 198

    2021  

    Abstract: This paper shows that several moment redundancy results developed for panel data models continue to hold for multi-level models with strict exogenous explanatory variables, which establishes the efficiency of some estimators for multi-level linear models. ...

    Abstract This paper shows that several moment redundancy results developed for panel data models continue to hold for multi-level models with strict exogenous explanatory variables, which establishes the efficiency of some estimators for multi-level linear models.
    Keywords economics ; estimation ; exhibitions ; linear models ; paper
    Language English
    Dates of publication 2021-01
    Publishing place Elsevier B.V.
    Document type Article
    Note NAL-light
    ISSN 0165-1765
    DOI 10.1016/j.econlet.2020.109667
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Archaeometry should be based on Archaeology. A comment on

    Yang, Yimin

    Journal of archaeological science. 2020 July, v. 119

    2020  

    Abstract: In their paper “The beginning of faience in China: A review and new evidence”, Lin et al. (2019) conclude that the Kayue people in Qinghai began making faience with a high potash content during the second half of the second millennium BC, prior to the ... ...

    Abstract In their paper “The beginning of faience in China: A review and new evidence”, Lin et al. (2019) conclude that the Kayue people in Qinghai began making faience with a high potash content during the second half of the second millennium BC, prior to the Zhou people (1046-771BC). Based on a thorough assessment of the archaeological evidence, especially concerning the dates of the Kayue tombs, I conclude there is a lack of solid evidence that these faience beads predate the Western Zhou Dynasty (1046-771BC) so it cannot be inferred that the Zhou people learned production technologies for high potash faience from the Kayue people. A possible faience road for the transfer of production technologies from Xinjiang to Central China is further proposed. In this transfer process, some typology and production technologies for faience beads were adopted by the Western Zhou people, but the glaze recipe of most faience changed greatly in Central China due to adaptation to local resources.
    Keywords archaeology ; people ; China
    Language English
    Dates of publication 2020-07
    Publishing place Elsevier Ltd
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 1468969-8
    ISSN 0305-4403
    ISSN 0305-4403
    DOI 10.1016/j.jas.2020.105149
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Flex-DLD: Deep Low-Rank Decomposition Model With Flexible Priors for Hyperspectral Image Denoising and Restoration.

    Chen, Yurong / Zhang, Hui / Wang, Yaonan / Yang, Yimin / Wu, Jonathan

    IEEE transactions on image processing : a publication of the IEEE Signal Processing Society

    2024  Volume 33, Page(s) 1211–1226

    Abstract: Hyperspectral images (HSIs) are composed of hundreds of contiguous waveband images, offering a wealth of spatial and spectral information. However, the practical use of HSIs is often hindered by the presence of complicated noise caused by various factors ...

    Abstract Hyperspectral images (HSIs) are composed of hundreds of contiguous waveband images, offering a wealth of spatial and spectral information. However, the practical use of HSIs is often hindered by the presence of complicated noise caused by various factors such as non-uniform sensor response and dark current. Traditional methods for denoising HSIs rely on constrained optimization approaches, where selecting appropriate prior knowledge is critical for achieving satisfactory results. Nevertheless, these traditional algorithms are limited by hand-crafted priors, leaving room for improvement in their denoising performance. Recently, the supervised deep learning technique has emerged as a promising approach for HSI denoising. However, their requirement for paired training data and poor generalization ability on untrained noise distributions pose challenges in practical applications. In this paper, we design a novel algorithm by the synergism of optimization-based methods and deep learning techniques. Specifically, we introduce a plug-and-play Deep Low-rank Decomposition (DLD) model into the optimization framework. Furthermore, we propose an effective mechanism to incorporate traditional prior knowledge into the DLD model. Finally, we provide a detailed analysis of the optimization process and convergence of the proposed method. Empirical evaluations on various tasks, including hyperspectral image denoising and spectral compressive imaging, demonstrate the superiority of our approach over state-of-the-art methods.
    Language English
    Publishing date 2024-02-13
    Publishing country United States
    Document type Journal Article
    ISSN 1941-0042
    ISSN (online) 1941-0042
    DOI 10.1109/TIP.2024.3360902
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Fabrication of Crescent Shaped Microparticles for Particle Templated Droplet Formation.

    Yang, Yimin / Vagin, Sergei I / Rieger, Bernhard / Destgeer, Ghulam

    Macromolecular rapid communications

    2024  , Page(s) e2300721

    Abstract: Crescent-shaped hydrogel microparticles are shown to template uniform volume aqueous droplets upon simple mixing with aqueous and oil media for various bioassays. This emerging "lab on a particle" technique requires hydrogel particles with tunable ... ...

    Abstract Crescent-shaped hydrogel microparticles are shown to template uniform volume aqueous droplets upon simple mixing with aqueous and oil media for various bioassays. This emerging "lab on a particle" technique requires hydrogel particles with tunable material properties and dimensions. The crescent shape of the particles is attained by aqueous two-phase separation of polymers followed by photopolymerization of the curable precursor. In this work, the phase separation of poly(ethylene glycol) diacrylate (PEGDA, M
    Language English
    Publishing date 2024-04-14
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1475027-2
    ISSN 1521-3927 ; 1022-1336
    ISSN (online) 1521-3927
    ISSN 1022-1336
    DOI 10.1002/marc.202300721
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Semisupervised Manifold Regularization via a Subnetwork-Based Representation Learning Model.

    Zhang, Wandong / Wu, Q M Jonathan / Yang, Yimin

    IEEE transactions on cybernetics

    2023  Volume 53, Issue 11, Page(s) 6923–6936

    Abstract: Semisupervised classification with a few labeled training samples is a challenging task in the area of data mining. Moore-Penrose inverse (MPI)-based manifold regularization (MR) is a widely used technique in tackling semisupervised classification. ... ...

    Abstract Semisupervised classification with a few labeled training samples is a challenging task in the area of data mining. Moore-Penrose inverse (MPI)-based manifold regularization (MR) is a widely used technique in tackling semisupervised classification. However, most of the existing MPI-based MR algorithms can only generate loosely connected feature encoding, which is generally less effective in data representation and feature learning. To alleviate this deficiency, we introduce a new semisupervised multilayer subnet neural network called SS-MSNN. The key contributions of this article are as follows: 1) a novel MPI-based MR model using the subnetwork structure is introduced. The subnet model is utilized to enrich the latent space representations iteratively; 2) a one-step training process to learn the discriminative encoding is proposed. The proposed SS-MSNN learns parameters by directly optimizing the entire network, accepting input from one end, and producing output at the other end; and 3) a new semisupervised dataset called HFSWR-RDE is built for this research. Experimental results on multiple domains show that the SS-MSNN achieves promising performance over the other semisupervised learning algorithms, demonstrating fast inference speed and better generalization ability.
    Language English
    Publishing date 2023-10-17
    Publishing country United States
    Document type Journal Article
    ISSN 2168-2275
    ISSN (online) 2168-2275
    DOI 10.1109/TCYB.2022.3177573
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Clinical analysis of uterine parameters evaluated by preoperative magnetic resonance imaging in patients treated by hysteroscopic approach with previous cesarean scar defect-related abnormal uterine bleeding: a retrospective cohort study.

    Zhang, Qi / Yi, Shuijing / Yang, Yimin / Xiao, Songshu / Xu, Dabao / Wu, Jiaoyang / Jiang, Bin

    Quantitative imaging in medicine and surgery

    2024  Volume 14, Issue 3, Page(s) 2334–2344

    Abstract: Background: As the cesarean delivery rate continues to rise globally, the treatment of previous cesarean scar defects (PCSD) remains challenging. This study aimed to analyze the variables that may influence the clinical cure rate of patients with PCSD- ... ...

    Abstract Background: As the cesarean delivery rate continues to rise globally, the treatment of previous cesarean scar defects (PCSD) remains challenging. This study aimed to analyze the variables that may influence the clinical cure rate of patients with PCSD-related abnormal uterine bleeding (AUB) as determined by preoperative magnetic resonance imaging (MRI) following hysteroscopic therapy.
    Methods: Women who underwent hysteroscopic surgery for PCSD-related AUB at the Gynecology Department of Third Xiangya Hospital of Central South University from 2018 to 2022 were recruited to this retrospective cohort investigation. A total of 147 patients were enrolled in this study and underwent follow-up over 6 months. The significance of clinical characteristics linked to the clinical cure rate of AUB was examined by logistic regression.
    Results: There were 64 clinically cured (43.5%) and 83 non-clinically cured (56.5%) patients in the study. There were no significant differences in the age, menstrual duration, gravidity, parity, number of cesarean sections, time since the previous cesarean section, uterus position, width, depth, and thickness of the remaining muscle layer of the defect by MRI T2-weighted images (T2WI) before hysteroscopic surgery between the 2 groups. MRI T2WI of the myometrial thickness adjacent to the defect [P=0.038, odds ratio (OR) =2.095, 95% confidence interval (CI): 1.047-4.261] and the distance from the defect to the external cervical os (P=0.021, OR =2.254, 95% CI: 1.136-4.540) before hysteroscopic surgery are risk factors for the clinical cure rate.
    Conclusions: The myometrial thickness adjacent to the defect and the distance from the defect to the external cervical os in preoperative MRI are risk factors for clinical cure rate in patients with PCSD-related AUB after hysteroscopic treatment, which is helpful for evaluating the prognosis of disease.
    Language English
    Publishing date 2024-03-01
    Publishing country China
    Document type Journal Article
    ZDB-ID 2653586-5
    ISSN 2223-4306 ; 2223-4292
    ISSN (online) 2223-4306
    ISSN 2223-4292
    DOI 10.21037/qims-23-1205
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Non-Contact Monitoring of Fetal Movement Using Abdominal Video Recording.

    Han, Qiao / Hao, Dongmei / Yang, Lin / Yang, Yimin / Li, Guangfei

    Sensors (Basel, Switzerland)

    2023  Volume 23, Issue 10

    Abstract: Fetal movement (FM) is an important indicator of fetal health. However, the current methods of FM detection are unsuitable for ambulatory or long-term observation. This paper proposes a non-contact method for monitoring FM. We recorded abdominal videos ... ...

    Abstract Fetal movement (FM) is an important indicator of fetal health. However, the current methods of FM detection are unsuitable for ambulatory or long-term observation. This paper proposes a non-contact method for monitoring FM. We recorded abdominal videos from pregnant women and then detected the maternal abdominal region within each frame. FM signals were acquired by optical flow color-coding, ensemble empirical mode decomposition, energy ratio, and correlation analysis. FM spikes, indicating the occurrence of FMs, were recognized using the differential threshold method. FM parameters including number, interval, duration, and percentage were calculated, and good agreement was found with the manual labeling performed by the professionals, achieving true detection rate, positive predictive value, sensitivity, accuracy, and F1_score of 95.75%, 95.26%, 95.75%, 91.40%, and 95.50%, respectively. The changes in FM parameters with gestational week were consistent with pregnancy progress. In general, this study provides a novel contactless FM monitoring technology for use at home.
    MeSH term(s) Pregnancy ; Female ; Humans ; Fetal Movement ; Abdomen ; Video Recording ; Videotape Recording ; Fetal Monitoring
    Language English
    Publishing date 2023-05-15
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s23104753
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Synthesis of cordierite using municipal solid waste incineration fly ash as one additive for enhanced catalytic oxidation of volatile organic compounds.

    Tian, Daoyuan / Yang, Yimin / Zhang, Jia / Yue, Yang / Qian, Guangren

    The Science of the total environment

    2023  Volume 906, Page(s) 167420

    Abstract: Municipal solid waste incineration (MSWI) fly ash is a hazardous waste, which needs various recycling in order to reach "net-zero waste". This work aimed to synthesize cordierite using MSWI fly ash as one additive and investigate influence of the ... ...

    Abstract Municipal solid waste incineration (MSWI) fly ash is a hazardous waste, which needs various recycling in order to reach "net-zero waste". This work aimed to synthesize cordierite using MSWI fly ash as one additive and investigate influence of the additive on properties of the cordierite. As a result, the cordierite was successfully synthesized when the additive weight ratio was <15 % and the synthesis strategy was universally feasible for 14 kinds of different MSWI fly ashes. As a heat accumulator, the cordierite attained compressive strength of 42.1 MPa, water absorption of 26 %, bulk density of 1.87 g·cm
    Language English
    Publishing date 2023-09-27
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2023.167420
    Database MEDical Literature Analysis and Retrieval System OnLINE

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