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  2. Stepped-wedge trial - Wikipedia

    en.wikipedia.org/wiki/Stepped-wedge_trial

    The stepped-wedge design involves the collection of observations during a baseline period in which no clusters are exposed to the intervention. Following this, at regular intervals, or steps, a cluster (or group of clusters) is randomized to receive the intervention [5] [6] and all participants are once again measured. [7]

  3. Slope stability analysis - Wikipedia

    en.wikipedia.org/wiki/Slope_stability_analysis

    Method of slices. Slope stability analysis is a static or dynamic, analytical or empirical method to evaluate the stability of slopes of soil- and rock-fill dams, embankments, excavated slopes, and natural slopes in soil and rock.

  4. Discrete exterior calculus - Wikipedia

    en.wikipedia.org/wiki/Discrete_exterior_calculus

    In finite element analysis, the first stage is often the approximation of the domain of interest by a triangulation, T. For example, a curve would be approximated as a union of straight line segments; a surface would be approximated by a union of triangles, whose edges are straight line segments, which themselves terminate in points.

  5. Newmark's sliding block - Wikipedia

    en.wikipedia.org/wiki/Newmark's_sliding_block

    The Newmark's sliding block analysis method is an engineering that calculates permanent displacements of soil slopes (also embankments and dams) during seismic loading. . Newmark analysis does not calculate actual displacement, but rather is an index value that can be used to provide an indication of the structures likelihood of failure during a seismic e

  6. Zelen's design - Wikipedia

    en.wikipedia.org/wiki/Zelen's_design

    Zelen's design is an experimental design for randomized clinical trials proposed by Harvard School of Public Health statistician Marvin Zelen (1927-2014). In this design, patients are randomized to either the treatment or control group before giving informed consent. Because the group to which a given patient is assigned is known, consent can ...

  7. List of finite element software packages - Wikipedia

    en.wikipedia.org/wiki/List_of_finite_element...

    Finite element software for structural, geotechnical, heat transfer and seepage analysis: Intuition Software: 5.11: 2016-01: Proprietary software: Free educational version available [17] Mac OS X, Windows: JCMsuite: Finite element software for the analysis of electromagnetic waves, elasticity and heat conduction: JCMwave GmbH: 5.4.3: 2023-03-09 ...

  8. Occidental Petroleum (OXY) Q4 2024 Earnings Call Transcript

    www.aol.com/occidental-petroleum-oxy-q4-2024...

    Image source: The Motley Fool. Occidental Petroleum (NYSE: OXY) Q4 2024 Earnings Call Feb 19, 2025, 1:00 p.m. ET. Contents: Prepared Remarks. Questions and Answers. Call Participants

  9. Difference in differences - Wikipedia

    en.wikipedia.org/wiki/Difference_in_differences

    Difference in differences (DID [1] or DD [2]) is a statistical technique used in econometrics and quantitative research in the social sciences that attempts to mimic an experimental research design using observational study data, by studying the differential effect of a treatment on a 'treatment group' versus a 'control group' in a natural experiment. [3]