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Zuckerberg Facebook reel about Meta super intelligence
No full texthttps://epublications.marquette.edu/zuckerberg_files_videos/1471/thumbnail.jp
Identical Ratios: A Red Flag of Ratio Management
No full textThis paper identifies a helpful red flag stakeholders can use to detect whether a nonprofit has managed its financial information. This red flag is reporting an identical program ratio—that is, the nonprofit organization reports the exact same ratio in multiple years—while reporting a large change in total spending. We find nonprofits are more likely to report identical program ratios when resource providers rely on ratios; pay is determined, at least in part, by performance; and the potential for regulatory interference is high. This paper also identifies the cost allocation techniques and the specific expenses nonprofits likely manage. We find most nonprofits alter the allocations of multiple expenses and find the specific expenses most likely manipulated are ones where managers have a high degree of discretion over how much to allocate to programs
Increased Visual Response Delay Impact on Sensorimotor Control in Persons With Multiple Sclerosis
No full textMultiple Sclerosis negatively affects hand function in 60% of cases. Upper extremity dysfunction in persons with Multiple Sclerosis (PwMS) has previously been linked to slower, more variable movement, increased visual response delays (Tv), and neuroimaging evidence of altered brain activity; yet no one knows how these aspects relate to each other. This work combines clinical, kinematic, sensorimotor control, and neural imaging techniques to gain a more complete understanding of how upper extremity dysfunction arises in PwMS. Twenty PwMS and 20 Controls completed a reach and hold task with simultaneous electroencephalography recorded to determine if increased Tv in PwMS was associated with greater levels of kinematic and neurologic impairment. Compared to Controls, PwMS moved slower and with greater variability, had increased sensory response delays, and decreased neural responses in occipital and parietal regions. Increased Tv was correlated with the Nine Hole Peg Test (NHPT) performance for PwMS who had more impairment (assessed via NHPT) and showed varying effects on the neurologic response to the task. Specifically, Tv was correlated with temporal delays in parietal channels for PwMS with less impairment while Tv of more impaired PwMS was inversely correlated with peak amplitude across parietal, somatosensory, and frontal channels. It could be that PwMS with less impairment are able to compensate for increased processing delays by moving slower, while those with greater impairment are more limited in how compensation may occur
Performance Enhancement in Rewound Industrial Retrofit Solutions for Five- and Six-Phase Permanent Magnet Assisted Synchronous Reluctance Machines
No full textThis paper investigates upgrading aging three-phase Permanent Magnet Assisted Synchronous Reluctance Machines (PMaSynRMs) into multiphase configurations—specifically six- and five-phase windings—without modifying the existing stator or rotor laminations. This retrofit supports circular economic principles by extending machine life and reducing material waste and cost. Four configurations are examined: the original three-phase winding, asymmetrical six-phase winding, symmetrical six-phase winding, and five-phase winding. The feasibility of rewinding existing three-phase stators is explored for different slot/pole combinations. Balanced rewound five-phase windings are feasible only when the stator\u27s slot/pole ratio is greater than or equal to 9. Both symmetrical and asymmetrical rewound six-phase windings are possible for all slot/pole combinations, with asymmetrical windings preferred due to their lower MMF harmonics and reduced torque ripple compared to the symmetrical one. Transient simulations in Ansys Maxwell, conducted under healthy and one-phase fault conditions, compare the electromagnetic performance of the four configurations using a 9-slot/pole case study. All variants share identical stator and rotor geometries, ensuring a fair comparison. Although multiphase rewinding incurs a slight cost increase, it results in only a modest 3.8% rise in total drive cost. The five-phase machine offers the highest average torque and efficiency, while the asymmetrical six-phase machine provides the smoothest torque profile and superior fault tolerance. The symmetrical six-phase machine also delivers strong fault performance. In contrast, the original three-phase machine exhibits increased torque ripple and reduced torque output under fault conditions. Experimental results validate the simulation findings
Fast or Slow? A Meta-Analysis on the Performance Implications of Decision, Implementation, and Response Speed
No full textSpeed across various organizational processes, such as decision-making, executing operational activities, and responding to competitive challenges, represents an essential component of firms’ ability to achieve a competitive advantage. However, a theoretical and empirical consensus has yet to form whether decision speed (DS), implementation speed (IS), and response speed (RS) are beneficial or detrimental to firm performance. To help reconcile these inconclusive findings, we meta-analyze 127 studies (representing 239 effect sizes) and report overall direct effects for DS (0.21), IS (0.22), and RS (0.10) on firm performance. In addition, we examine contingencies which reveal that the performance consequences of DS, IS, and RS vary across contextual and methodological conditions