Showing 221 - 240 results of 463 for search '"difference in difference"', query time: 0.11s Refine Results
  1. 221

    Reidentification of Persons Using Clothing Features in Real-Life Video by Guodong Zhang, Peilin Jiang, Kazuyuki Matsumoto, Minoru Yoshida, Kenji Kita

    Published 2017-01-01
    “…First, colors change differently under different lighting and at different angles. …”
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  2. 222
  3. 223

    The Research of Primary School Second Stage Students' Parents' Attitudes Related to Course of Physical Education According to Their Education Levels by Rıdvan Kır, Sinan Ayan

    Published 2014-11-01
    “…For the significant difference at the results of one-way ANOVA analysis, Post-Hoc test was used for designating which group caused this difference. Meaningful differences were observed between the parents' education levels and the attitudes of them related to Course of Physical Education and between the students' interests to Course of Physical Education and the attitudes related to course hour.…”
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  4. 224

    Ignition and Flame Stabilization of a Strut-Jet RBCC Combustor with Small Rocket Exhaust by Jichao Hu, Juntao Chang, Wen Bao

    Published 2014-01-01
    “…Then the paper conducts a series of experiments to investigate the combustion characteristics under this oxygen pilot method and found that the flame stabilization characteristics are different at different combustion modes.…”
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  5. 225

    Overuse of medical imaging and effects of payer-provider integration: quasi-experimental evidence from Finland by Konsta Lavaste

    Published 2025-01-01
    “…I identify the overuse using the staggered difference-in-differences (DID) strategy, in which I consider patients from cities with a market entry as the treatment group and compare them to patients in other similar cities. …”
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  6. 226

    Examining the effects of two cognitive styles (field dependence vs. field independence) on learners’ mobile-assisted vocabulary acquisition by Mehdipour-Kolour Danial, Ali Mohamad Bilal

    Published 2024-02-01
    “…Learners with different cognitive styles (here, field dependence vs. field independence) may learn second language vocabulary differently in different vocabulary learning settings. Although cognitive style has been widely studied in second language research, little is known about how field dependence/independence affects learners’ vocabulary acquisition in a mobile-assisted learning setting. …”
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  7. 227

    Thermal Performance Analyses of Multiborehole Ground Heat Exchangers by Wanjing Luo, Changfu Tang, Yin Feng, Pu Miao

    Published 2017-01-01
    “…By assuming a uniform inlet fluid temperature (UIFT), instead of uniform heat flux (UHF), the effects of thermal interference and the thermal performance difference between different boreholes can be examined. Simulation results indicate that the monthly average outlet fluid temperatures of GHEs will increase gradually while the annual cooling load of the GHEs is greater than the annual heating load. …”
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  8. 228

    The Association between the Serum Uric Acid Level and Hypertension in Middle-Aged and Elderly Adults by Xianpeng Xu, Jinke Huang, Simin Wu, Qingjie Ji, Xuguang Guo, Yong Huang

    Published 2021-01-01
    “…However, it may differ in different race groups, nor between male and female. …”
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  9. 229

    Natural Catalytic Antibodies in Norm, Autoimmune, Viral, and Bacterial Diseases by Georgy A. Nevinsky, Valentina N. Buneva

    Published 2010-01-01
    “…A significant increase in the relative Abz activities associated with a specific reorganization of the immune system, including changes in the differentiation and proliferation of bone marrow hematopoietic stem cells and lymphocyte proliferation in different organs. Different mechanisms of Abz production can be proposed for healthy externally immunized and for autoimmune mammals during the development of pathology.…”
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  10. 230

    Influence of AGTR1 and ABCB1 Gene Polymorphism on the Curative Effect of Irbesartan by Qiao Wang, Lingsen You, Zeyu Li, Leiyi Zhang, Xueqi Li, Xuesong Yang

    Published 2022-01-01
    “…However, spline smoothing analysis demonstrated that the blood pressure therapeutic responses of irbesartan presented a noticeable difference among different ABCB1 genotypes when irbesartan doses reached over 300 ng/mL. …”
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  11. 231

    Experimental Study on Acoustic Emission Characteristics of Granite and Sandstone under Uniaxial Compression by Yongshuai Sun, Fei Yu, Jianguo Lv

    Published 2023-01-01
    “…The results of the study are as follows: there is a quiet zone in the acoustic emission event before the rock is destroyed and destabilized, and the higher the rock strength, the more obvious the quiet zone; this important feature can be used as a precursor feature of rock mass failure for prediction, and the rock acoustic emission energy rate is more obvious in the quiet area before destruction than the acoustic emission event rate; rock acoustic emission has experienced initial compaction zone, rising zone, peak zone, and descending zone, whether different rocks go through each stage and how long each stage lasts is related to the nature of the rock; under different loading methods, the failure mechanism of rock is different; the different loading rates of monotonic loading and grading loading will affect the change rate of acoustic emission.…”
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  12. 232

    Forecasting of Population Narcotization under the Implementation of a Drug Use Reduction Policy by Sergey Mityagin, Carlos Gershenson, Alexander Boukhanovsky

    Published 2020-01-01
    “…Thereby, notwithstanding the fact that the phenomenology of the population narcotization process is similar in the different regions, approaches to the modeling of drug addiction may also substantially differ for different kinds of antidrug policies. This paper presents a survey of the available antidrug policies and the corresponding approaches to the simulation of population narcotization. …”
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  13. 233

    The impact of fuel incentive and improved cook stove on firewood collection in refugees camps in Tanzania: A quasi-experimental research design by Tukae Mbegalo

    Published 2025-12-01
    “…The study employed propensity score matching (PSM) and difference-in-differences (DID) methods. PSM, including inverse probability weighting (IPW), kernel matching and multivariate distance matching, compared refugees receiving ICS alone with those receiving ICS and solid fuel at the end-line. …”
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  14. 234

    Impact of digital greening synergistic transformation on urban economic resilience in China: Evidence from quasi-natural experiments by Liangen Zeng, Meiyu Wen, Chengming Li, Yang Nie, Saige Wang

    Published 2025-01-01
    “…This paper examines panel data from 280 Chinese cities (2008–2021) by performing quasi-natural experiments from the ‘Broadband China’ and ‘Low-Carbon Cities’ pilot initiatives and employing a multi-period difference-in-differences (DID) approach. The main findings are as follows. (1) DGST notably enhances urban economic resilience, showing stronger effects than standalone pilot projects. (2) DGST strengthens economic resilience by enhancing defence, adaptation and learning capacities through labour absorption, industrial structure optimisation and green technology innovation. (3) The effect of DGST on economic resilience is influenced by factors such as human capital, financial resources and infrastructure, with cities possessing greater resources deriving more substantial benefits. (4) Cities that implemented ‘Low-Carbon Cities’ prior to ‘Broadband China’ experienced more pronounced improvements in economic resilience. …”
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  15. 235

    Verification of EC Model's Effect to Forecast Precipitation in Beipan River Basin by KONG Xiangbo, XIA Xiaoling, CU Yuanke, TANG Yanjing, SONG Wanli, LIAO Bo

    Published 2021-01-01
    “…In order to test the precipitation forecast of the European central numerical model (hereinafter referred to as EC model) in the Beipan River Basin,this paper tests the forecast effect of different starting times and the overall forecast effect of 2020 flood season for an extreme precipitation process in the Beipan River Basin.The results are as follows:①For the prediction of 500 hPa circulation field,rainfall area,correlation coefficient between EC rainfall prediction and actual rainfall,and TS score of rainstorm,the shortened the prediction time is,the better the prediction effect will be.The effect is the most obvious for the maximum rainfall forecast adjustment,and the rainfall after adjustment is closer to the actual rainfall.The EC model is also applicable to forecast heavy rain.②In 2020,the forecast effect of no rain,light rain and moderate rain is better than that of heavy rain and rainstorm.EC model is almost not available to forecast severe rainstorm.③The rainstorm forecast effect differs with different basins,and the rainstorm forecast effect of Dongqing Basin is better than that of other basins.Therefore,it can be concluded that the correlation coefficient of EC model in the whole Beipan River Basin is about 0.9,and the ratio of the standard deviation of prediction to that of observation is 0.77,which indicates that EC model has good prediction effect for the trend of precipitation change,but there are some deviations in the area and magnitude.So,the forecast results can be applied after being corrected.…”
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  16. 236

    Cloning of HSP90, expression and localization of HSP70/90 in different tissues including lactating/non-lactating yak (Bos grunniens) breast tissue. by Penggang Liu, Sijiu Yu, Yan Cui, Junfeng He, Chuan Yu, Zexing Wen, Yangyang Pan, Kun Yang, Liangli Song, Xue Yang

    Published 2017-01-01
    “…The qRT-PCR, WB results showed that the expressions of HSP70/90 mRNA and protein were significantly different in different tissues, and 3-fold higher expression during the lactation period than the non-lactation period of breast tissue (P < 0.01). …”
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  17. 237

    Cerebrovascular ageing: how zebrafish can contribute to solving the puzzle by Guy Malkinson, Guy Malkinson, Catarina M. Henriques, Catarina M. Henriques

    Published 2025-02-01
    “…Importantly, we do not understand why this is different in different individuals in what concerns rate of dysfunction and its downstream impact on brain function. …”
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  18. 238

    Impact of evaluation method shifts on student performance: an analysis of irregular improvement in passing percentages during COVID-19 at an Ecuadorian institution by Esteban  Guevara Hidalgo

    Published 2025-01-01
    “…It aims to assess the impact of transitioning from one evaluation method to the other, revealing fundamental structural differences. These differences can lead to disparities that unfairly advantage or disadvantage certain student groups based on the evaluation method used. …”
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  19. 239

    Performance Simulation Comparison for Parabolic Trough Solar Collectors in China by Jinping Wang, Jun Wang, Xiaolong Bi, Xiang Wang

    Published 2016-01-01
    “…The operating performance and optical efficiency of the parabolic trough solar collectors (PTCs) are different in different regions and different seasons. To determine the optimum design and operation of the parabolic trough solar collector throughout the year, an accurate estimation of the daily performance is needed. …”
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  20. 240

    The chain reaction of carbon emission trading policy in efficiency and rebound: evidence from spatial perspective in China by Huan Wang, Yangyang Shen, Ting Luo, Fang Wang, Yunqiang Liu

    Published 2025-01-01
    “…Utilizing carbon emission trading policies (CETP) as a quasi-natural experiment, this study created a spatial difference-in-differences (SDID) model with an endogenous spatio-temporal weight matrix. …”
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