Showing 401 - 420 results of 463 for search '"difference in difference"', query time: 0.12s Refine Results
  1. 401

    A measure of the difference between test sets for generating controlled random tests by V. N. Yarmolik, V. V. Petrovskaya, I. Mrozek

    Published 2022-12-01
    “…It is shown that test sets, which are indistinguishable when Hamming distance is used as a measure of difference, have different values of AD(Ti, Tk) that allows to make more accurate classification of randomly generated sets as candidates for test sets.…”
    Get full text
    Article
  2. 402

    Impact of smart city construction policy on high-quality economic development of coastal cities by Lihong Wang, Lihong Wang, Feng Li, Yang Gao, Kedong Yin

    Published 2025-01-01
    “…Coastal cities, with their unique geographical and economic advantages, serve as important engines of high-quality economic growth.MethodsBased on panel data from 53 coastal cities in China from 2003 to 2021, this study uses the super-efficiency SBM-GML index to measure green total factor productivity as an indicator of high-quality economic development and employs a time-varying difference-in-differences model to examine the impact of smart city construction on high-quality economic development in coastal areas.ResultsThe findings reveal that (1) Smart city construction significantly enhances high-quality economic development in coastal cities. …”
    Get full text
    Article
  3. 403

    Soil Characteristics, Growth, Yield, Mineral Composition and Proximate Content of Soybeans Under Various Tillage Techniques by Aruna Olasekan Adekiya, Olajire Damilola Adedokun, Ojo Timothy Adebiyi

    Published 2024-01-01
    “…Based on these objectives, it was hypothesized that soil properties, growth, yield, mineral and proximate contents of soybean would react differently to different tillage methods. Consequently, experiments were conducted to validate this hypothesis. …”
    Get full text
    Article
  4. 404

    Differentiation of Isolated Small Bowel Crohn’s Disease from Other Small Bowel Ulcerative Diseases: Clinical Features and Double-Balloon Enteroscopy Characteristics by Meng Niu, Zheng-Hao Chen, Meng Li, Xing Zhang, Chun-Xiao Chen

    Published 2022-01-01
    “…The ulcers of ISBCD were more distributed in the ileum (111 (79.9%) vs. 29 (46.8%), p<0.001), and their main morphology differed in different intestinal segments. Longitudinal ulcers (OR 14.293, 95% CI 4.920-41.518, p<0.001) and large ulcer (OR 0.128, 95% CI 0.044-0.374, p<0.001) contributed to the differentiation of ISBCD from OSBUD. …”
    Get full text
    Article
  5. 405

    Significance of immune factors in Crohn's disease development by D. S. Stavtsev, T. A. Astrelina, O. V. Knyazev, T. V. Pukhlikova

    Published 2015-07-01
    “…Presented ambiguous results are caused, first of all, by ethnic differences and different frequency of some alleles in different populations. …”
    Get full text
    Article
  6. 406

    Recovery Method and Parameter Optimization of a Pilot Test for Conformance Control Flooding and Thermal Recovery in the Offshore Heavy Oilfield by Yanxia Zhou, Xiangguo Lu, Bao Cao, Yigang Liu, Yunbao Zhang, Xun Zhong

    Published 2021-01-01
    “…However, the selection of EOR method and related parameters may directly impact the final results and can be noticeably different for different reservoirs; therefore, to optimize the oil production rate and final oil recovery, systematical optimization of every detail based on the condition of a specific reservoir is of key importance. …”
    Get full text
    Article
  7. 407

    Optimizing corrosion resistance of the Mg–4Zn-0.5Y-0.5Nd alloy by regulation of secondary phase and grain structure by C.C. Zhao, W.T. Ouyang, M. Wen, C. Yang, D.K. Xu, Y.F. Zheng, T.F. Xi, L.Y. Sheng

    Published 2025-03-01
    “…The Mg–Zn–Y-Nd alloys with different states all experience passivation, pitting corrosion, galvanic corrosion, localized corrosion, and extensive corrosion stages, but the duration time of different stages of different alloys differs obviously, which is mainly determined by the secondary phase morphology. …”
    Get full text
    Article
  8. 408

    Investigation of peripheral markers of inflammation in patients with different diagnoses on the psychosis spectrum: an observational cross-sectional study by Ezgi Sıla Ahi Üstün, Serkan Yazıcı, Rifat Serav İlhan, Kazım Cihan Can, Meram Can Saka

    Published 2025-01-01
    “…In this study, we investigated whether there is a difference between different diagnostic groups, in which psychosis is the common pathway, and healthy controls in markers of peripheral inflammation, such as platelet-lymphocyte ratio (PLR), neutrophil–lymphocyte ratio (NLR), systemic inflammatory response index (SIRI) and systemic immune-inflammatory index (SII), determined by haemogram. …”
    Get full text
    Article
  9. 409

    Study on Seismic Dynamic Response of Deep-Buried Tunnel Based on Tectonic Stress by Junjie He, Song Hu, Yonggang Guo

    Published 2022-01-01
    “…The time for the occurrence of PGA (acceleration extreme) of each observation point in different directions differed substantially. The extreme value of dynamic stress along the tunnel axis conformed to the distribution pattern of the initial tectonic stress. …”
    Get full text
    Article
  10. 410

    Comprehensive analysis of a-and b-thalassemia genotypes and hematologic phenotypes by Heng Wang, Hai Huang, Yaping Chen, Xie Dan, Bangquan An, Shengwen Huang

    Published 2025-01-01
    “…A comprehensive understanding of the hematologic phenotype differences between different genotypes and subtypes of thalassemia can provide more accurate data for genetic counseling of thalassemia.…”
    Get full text
    Article
  11. 411

    Changes in the use practitioner-based complementary and alternative medicine over time in Canada: Cohort and period effects. by Mayilee Canizares, Sheilah Hogg-Johnson, Monique A M Gignac, Richard H Glazier, Elizabeth M Badley

    Published 2017-01-01
    “…Factors associated with cohort differences were different for CAM and chiropractic use. Cohort differences in CAM use were partially related to a period effect of increasing CAM use over time across all ages while cohort differences in chiropractic use were related to the higher prevalence of chronic conditions among recent cohorts. …”
    Get full text
    Article
  12. 412

    Sexual health preparedness among medical students by Z.I. Merhavy, T.C. Varkey, T. Kotyk, C. Zeitler

    Published 2023-12-01
    “…After obtaining informed consent, students completed this survey through a private form and the data was compared to students of different years, different programs, and different intended specialties. …”
    Get full text
    Article
  13. 413

    Analysis of Adverse Pregnancy Outcomes of Pregnant Women with Syphilis and Maternal-Infant Serological Association in Changzhou, China, 2015–2019 by Chaorong Bian, Zhiqiang Qin, Jieying Zhang, Mengtao Sun, Manman Gu, Kejin Chen

    Published 2022-01-01
    “…We also compared differences in syphilis titers among mothers who received different interventions, differences in serologic outcomes of their children, and correlations between them. …”
    Get full text
    Article
  14. 414

    Classification of kinesiophobia in patients after cardiac surgery under extracorporeal circulation in China: latent profile and influencing factors analysis from a cross-sectional... by Qi Li, Rong Wang, Yanmei Gu, Tong Ren, Jing Jing Piao, Wenhui Xing, Yujing Liang

    Published 2025-01-01
    “…Objective To investigate the potential classification of kinesiophobia in patients after cardiac surgery under extracorporeal circulation from a psychosocial perspective, and analyse the characteristic differences among different latent levels of patients.Study design This is a cross-sectional study of Chinese adults after cardiac surgery under extracorporeal circulation, aged 18 years and older, recruited from a tertiary hospital in North China.Methods This study uses latent profile analysis to identify potential classifications of kinesiophobia in questionnaires from 348 patients undergoing cardiac surgery under extracorporeal circulation. …”
    Get full text
    Article
  15. 415

    Exploration on factors influencing HLA-C molecular expression level by flow cytometry by LI Yunan, JIANG Renhui, CAI Siqi, LIU Jie, DENG Zhihui

    Published 2025-01-01
    “…The significance of differences between different groups was analyzed through Student t test. …”
    Get full text
    Article
  16. 416

    A Novel Method for Screening the PMU Phase Angle Difference Data Based on Hyperplane Clustering by Ancheng Xue, Shuang Leng, Yecheng Li, Feiyang Xu, Kenneth E. Martin, Jingsong Xu

    Published 2019-01-01
    “…Some of the applications, such as line parameter identification and state estimation, depend not only on phase angle data but also on phase angle difference between different locations. Field data can suffer from errors, such as time synchronization error, transducer error, PMU algorithm error, hardware error or malicious attacks, etc. …”
    Get full text
    Article
  17. 417

    Slight thermal stress exerts genetic diversity selection at coral (Acropora digitifera) larval stages by Cristiana Manullang, Nozomi Hanahara, Ariyo Imanuel Tarigan, Yuko Abe, Mao Furukawa, Masaya Morita

    Published 2025-01-01
    “…While overall genetic diversity, represented by π, did not significantly differ between the control and heat-exposed groups, Tajima’s D differed, indicating different selective pressures in each group. …”
    Get full text
    Article
  18. 418

    Investigation of Insulin-Like Growth Factor 2 mRNA Binding Protein 2 Gene Polymorphisms in Type 2 Diabetes Patients by Duygu Yolal Ertural, Ümit Çınkır, Nurcan Aras

    Published 2024-06-01
    “… Background/Aims: Type 2 diabetes (T2D) whose prevalance differs in different populations is a multifactorial disease. …”
    Get full text
    Article
  19. 419

    Efficacy of two radiographic algorithms for detection of peri-implant bone defects on cone-beam computed tomography scans by Faezeh Yousefi, Ali Heidari, Azita Ehsani, Maryam Farhadian, Marzieh Ehsani

    Published 2025-01-01
    “…Conclusion The diagnostic accuracy and sensitivity for detection of different defect types were not significantly different in different scan modes but activation of ANR filter significantly decreased the specificity and positive predictive value compared with no use of filter.…”
    Get full text
    Article
  20. 420

    Elderly Patients with Nondistant Metastatic Pancreatic Head Adenocarcinoma Cannot Benefit from More Radical Surgery by Li Chen, Lanning Jia, Zhigang Tian, Yang Yang, Ke Zhao

    Published 2022-01-01
    “…The survival difference in different groups was compared after the matching analysis. …”
    Get full text
    Article