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Analysis of MSK jamming effectiveness based on effective jamming coefficient
Published 2022-11-01“…For the problem of communication jamming effectiveness, an effective jamming coefficient was proposed as an evaluation metric based on the correlation between jamming and communication signals, and the impact of orthogonal receivers was analyzed.Specially, minimum shift keying (MSK) and several typical binary modulation signals were chosen as the target communication and jamming signals, respectively.Jamming effectiveness evaluation was performed for the above mentioned scenario by deriving its theoretical bit error rate (BER) formulas.Moreover, for coherent jamming scenario with MSK being the jamming signal, the impact of its phase difference, frequency difference and delay on the jamming effectiveness were also systematically analyzed.The analysis suggests that to achieve better jamming effectiveness, different jamming modulation scheme should be chosen according to the signal-to-noise (SNR) of the jamming communication signal.Simulation has also shown that there is a good match between the derived theoretical analysis and numerical simulation of the proposed method effectiveness, which has proven its accuracy and validity.…”
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42
Emission Reduction Effect and Mechanism of Auto-Purchase Tax Preference
Published 2021-01-01“…Based on unique Chinese urban and new car registration data, this paper empirically analyzes the emission reduction effect of car purchase tax incentives, its spatial heterogeneity, and impact on car consumption structure using difference-in-difference model, regression discontinuity design model, and other methods. …”
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43
Effects of Bans on Prostitution on Prevalence of Induced Abortions
Published 2025-01-01“…Methods: This was a cross-sectional study employing event-study analyses and a difference-in-difference-in-differences methodology. We compared the changes in numbers of induced abortions before and after the bans were introduced, among women under 20 years of age and among those aged 20―24 years, over states. …”
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44
The Impact of Female Executives on the Quality and Comparability of Financial Statements: Evidence from the U.S.
Published 2025-01-01“…We also examine firms with male to female CFO changes and vice versa using difference in difference regressions. We find that female CFO firms have a 1.1% higher FSC on average than male CFO firms. …”
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45
Relative Contribution of the Topographic Influence on the Triangle Approach for Evapotranspiration Estimation over Mountainous Areas
Published 2014-01-01“…In this paper, topographic corrections were applied to ET estimates using the surface-air temperature difference-Normalized Difference Vegetation Index ((Ts-Ta)-NDVI) triangle method with MODIS data for the Taihu Basin in China. …”
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46
Investigating whether connecting people can promote subnational economic development: Evidence from China–ASEAN friendship cities
Published 2022-12-01“…This study employs the difference‐in‐difference (DID) model and propensity score matching to estimate the impact of connecting people proposed by the Belt and Road Initiate (BRI) on the subnational economic development of the Association of Southeast Asian Nations (ASEAN) cities. …”
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47
Numerical Simulation of Low-Permeability Reservoirs with considering the Dynamic Boundary Layer Effect
Published 2021-01-01“…With the reduction of production pressure difference, the difference between accumulative oil production with and without the boundary layer effect increases, which indicate that the dynamic effect of the boundary layer is intensified.…”
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48
Marine environmental regulation and green technology innovation: evidence from enterprises in coastal areas of China
Published 2025-01-01“…This article takes the ‘National Marine Ecological Civilization Demoznstration Zone’ (hereinafter referred to as the ‘Demonstration Zone’) as a quasi-natural experiment and adopts the difference-in-difference method to explore the effects of marine environmental regulation on green technology innovation of micro-enterprises in coastal areas and on the high-quality development of the regional economy. …”
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49
Effect of nutrition education and iron-folic acid supplementation on anemia among pregnant women in Ethiopia: a quasi-experimental study
Published 2025-01-01“…The analysis of the effect of the intervention was done using difference-in-difference and a generalized estimation equation (GEE) approach. …”
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50
Upper Extremity Function following Transradial Percutaneous Coronary Intervention: Results of the ARCUS Trial
Published 2022-01-01“…However, no significant long-term difference or difference between the intervention arm and the contralateral arm was found at all timepoints.…”
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51
Effectiveness of Group Health Education on “Perceived Stress” among High-School Children of Kolar: A Cluster Randomized Controlled Trial
Published 2024-04-01“…After the intervention in the intervention group, about 57.9% had mild stress, 42.1% had moderate stress, and none had severe stress. The difference in difference analysis (DID) showed that the mean PSS scores in the intervention group changed by −8.84 while in the control group by 0.40. …”
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52
Impact evaluation of hilsa fishery restoration in Bangladesh: money well spent?
Published 2025-01-01“…The research evaluates the historical context influencing hilsa production, assesses the project’s impact on stock recovery, and conducts a cost-benefit analysis to determine the ROI related to hilsa fishery management and community livelihoods. Using the difference-in-difference method, the study measured changes in income and assets, revealing a significant increase of 86.19% in income and 63.99% in overall assets in the intervention group compared to the baseline. …”
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Effectiveness of couple-based violence prevention education in reducing intimate partner violence during pregnancy in rural Ethiopia: A cluster randomized controlled trial.
Published 2025-01-01“…Couple-based violence prevention education was provided to the participants in the intervention group, while the control group received routine or standard care. We used difference-in-difference analysis and the Generalized Estimating Equation (GEE) model to assess the effectiveness of the intervention.…”
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54
Family-centered Health Education Intervention for Improving Iron−folic Acid Adherence and Anemia Reduction among Antenatal Mothers in Rural Jodhpur: A Quasi-experimental Study
Published 2024-12-01“…Moreover, the mean hemoglobin level showed a significant difference from 9.8 ± 1.3 g/dL at baseline to 10.8 ± 0.5 g/dL at the end line, whereas the serum ferritin level increased from 12.5 ± 8.7 μg/dL to 19.0 ± 7.6 μg/dL. The difference-in-difference analysis revealed 0.78 g/dL hemoglobin and 4.72 μg/dL ferritin improvement in the intervention group is due to family-centered health education. …”
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Impact of haemostasis methods during ovarian cystectomy on ovarian reserve: a pairwise and network meta-analysis
Published 2024-12-01“…In NMA, the reduction of postoperative AMH levels in the electrocoagulation (bipolar) group was higher than the suture group at 6 months with a statistical significance, and at 1, 3 and 12 months without a significant difference. The difference in the postoperative decrease of AMH level did not reach statistical significance between suture and sealant, coagulation and haemostatic sealant. …”
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Detecting Subtle Shifts: Comparing SME Performance Drivers Pre and During the Covid-19 Pandemic
Published 2025-02-01“…However, the pandemic disrupted many of these resources and capabilities as travel restrictions and decreased demand made it difficult for SMEs to maintain their customer base or invest in new markets. The Difference in Difference (DID) technique was employed due to its ability to isolate the impact of the pandemic on firm performance by comparing pre- and post-Covid-19 features. …”
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Effectiveness of a resilience, gender equity and mental health group intervention for young people living in informal urban communities in North India: a cluster randomized control...
Published 2025-12-01“…Five validated tools measuring resilience gender equity and mental health were filled by participants at three different points in time. Results Difference in difference (DiD) analysis at T2 showed that scores improved among girls in intervention group, for adjusted model, resilience (DiD = 4.12; 95% CI: 2.14, 6.09) and among boys, for resilience (DiD = 5.82; 95% CI: 1.57, 9.74). …”
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Determining and comparing the achieved competencies of graduating nursing students of public and private universities in Iran
Published 2025-01-01“…The evidence-based nursing care showed the greatest difference in means (mean difference = 0.35), while individualized care had the smallest difference (mean difference = 0.09) according to the results of the independent t-test. …”
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Developing and assessing the “MultiLife” intervention: a mobile health-based lifestyle toolkit for cardiometabolic multimorbidity in diabetes and hypertension management – a type 1...
Published 2025-01-01“…A random-effects regression model will be used for difference-in-difference analysis, adjusting for covariates and within-cluster correlations. …”
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Effectiveness, cost-effectiveness and return on investment of individual placement and support compared with traditional vocational rehabilitation for individuals with severe menta...
Published 2024-04-01“…Exact matching and difference-in-difference fixed-effect estimations were performed to handle the non-randomised nature of the data. …”
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