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Double Polarisation Observable G for Single Pion Photoproduction from the Proton.
No full textWe report measurements of π + and π 0 meson photoproduction from longitudinally spin-polarised protons by an energy tagged (0.73-2.3 GeV) and linearly polarised photon beam. A close to complete solid angle coverage for the reaction products was provided by the CEBAF Large Acceptance Spectrometer at Jefferson Laboratory. The double-polarisation observable G is extracted from Maximum Likelihood fits to the data, enabling the first accurate determination for the reaction (gamma) over right arrow(rho) over right arrow -\u3e pi(+)n, while also significantly extending the kinematic coverage for (gamma) over right arrow(rho) over right arrow -\u3e pi(0)p. This large data set provides an important constraint on the properties and spectrum of excited nucleon states decaying to Nπ in the mass range from 1.4 to 2.2 GeV, as well as for background (non-resonant) photoproduction processes. The considerable improvement achieved in the description of the observable G within the SAID and Bonn-Gatchina approaches after implementation of our data, illustrates that the partial-wave analyses now significantly extend the knowledge on Nπ photoproduction amplitudes at W \u3e 1.8 GeV. A partial-wave analysis using the new high-precision data set has a large impact on the extracted properties of high-spin nucleon excited states
Mergers, MACs, and COVID-19
Get PDFThe conventional wisdom is that MAE/MACs in merger agreements provide an opportunity for buyers to renegotiate merger agreements in the event of intervening adverse events. However, the experience following the COVID-19 outbreak suggests that the conventional wisdom is incorrect or at least overstated. In fact, MAE/MACs shift the risk of exogenous adverse events (like COVID-19) to buyers while leaving only the risks of adverse endogenous and semi-endogenous events with the seller. The consequence of this risk-shifting is to strictly limit the circumstances under which a buyer can credibly lean on a MAE/MAC to threaten to terminate a merger agreement and initiate a renegotiation. Parties to merger agreements appear to have internalized that lesson, as demonstrated by the relative paucity of renegotiations in the immediate aftermath of the COVID-19 outbreak
Family Law
Get PDFThis Article provides a practical update on recent changes in Virginia law in the family law realm, including, but not limited to, divorce, custody and visitation, adoption, child support, and equitable distribution of assets and debts. There have been significant legislative amendments regarding the divorce process with the introduction of the Uniform Collaborative Law Act as well as the removal of the corroborating witness requirement for no-fault divorce matters. This succinct synopsis outlines legislative changes as well as significant judicial decisions within the past year
Juvenile Justice
Get PDFThis Article serves as a review of recent juvenile justice law and legislative trends in Virginia. This Article will review both codified changes and relevant proposed legislation that did not pass the Legislature to more fully identify trends in juvenile justice. While this Article does not capture every proposed or codified change to Virginia juvenile justice law, it does identify and present the most significant changes and trends over the last two legislative sessions to the laws governing the entrance of youth into the criminal legal system, the treatment of Virginia’s youth directly involved in the criminal legal system, and the treatment of youth convicted or adjudicated delinquent by a Virginia tribunal and serving a sentence in a designated facility. This Article further discusses the potential ramifications of such legislative changes on youth and their families and what practitioners must be aware of when representing youth facing charges of unlawful behavior in the Commonwealth of Virginia
Taxation
Get PDFThis Article reviews significant recent developments in the laws affecting Virginia state and local taxation. Its Parts cover legislative activity, judicial decisions, and selected opinions and other pronouncements from the Virginia Department of Taxation (“Tax Department” or “Department of Taxation”) and the Attorney General of Virginia over the past year.
Part I of this Article addresses state taxes. Part II covers local taxes, including real and tangible personal property taxes, license taxes, and discrete local taxes.
The overall purpose of this Article is to provide Virginia tax and general practitioners with a concise overview of the recent developments in Virginia taxation that are most likely to impact their clients. However, it does not address many of the numerous minor, locality-specific, or technical legislative changes to Title 58.1 of the Virginia Code, which covers taxation
Global, regional, and national progress towards Sustainable Development Goal 3.2 for neonatal and child health: all-cause and cause-specific mortality findings from the Global Burden of Disease Study 2019
No full textBackground: Sustainable Development Goal 3.2 has targeted elimination of preventable child mortality, reduction of neonatal death to less than 12 per 1000 livebirths, and reduction of death of children younger than 5 years to less than 25 per 1000 livebirths, for each country by 2030. To understand current rates, recent trends, and potential trajectories of child mortality for the next decade, we present the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2019 findings for all-cause mortality and cause-specific mortality in children younger than 5 years of age, with multiple scenarios for child mortality in 2030 that include the consideration of potential effects of COVID-19, and a novel framework for quantifying optimal child survival.
Methods: We completed all-cause mortality and cause-specific mortality analyses from 204 countries and territories for detailed age groups separately, with aggregated mortality probabilities per 1000 livebirths computed for neonatal mortality rate (NMR) and under-5 mortality rate (U5MR). Scenarios for 2030 represent different potential trajectories, notably including potential effects of the COVID-19 pandemic and the potential impact of improvements preferentially targeting neonatal survival. Optimal child survival metrics were developed by age, sex, and cause of death across all GBD location-years. The first metric is a global optimum and is based on the lowest observed mortality, and the second is a survival potential frontier that is based on stochastic frontier analysis of observed mortality and Healthcare Access and Quality Index.
Findings: Global U5MR decreased from 71·2 deaths per 1000 livebirths (95% uncertainty interval [UI] 68·3–74·0) in 2000 to 37·1 (33·2–41·7) in 2019 while global NMR correspondingly declined more slowly from 28·0 deaths per 1000 live births (26·8–29·5) in 2000 to 17·9 (16·3–19·8) in 2019. In 2019, 136 (67%) of 204 countries had a U5MR at or below the SDG 3.2 threshold and 133 (65%) had an NMR at or below the SDG 3.2 threshold, and the reference scenario suggests that by 2030, 154 (75%) of all countries could meet the U5MR targets, and 139 (68%) could meet the NMR targets. Deaths of children younger than 5 years totalled 9·65 million (95% UI 9·05–10·30) in 2000 and 5·05 million (4·27–6·02) in 2019, with the neonatal fraction of these deaths increasing from 39% (3·76 million [95% UI 3·53–4·02]) in 2000 to 48% (2·42 million; 2·06–2·86) in 2019. NMR and U5MR were generally higher in males than in females, although there was no statistically significant difference at the global level. Neonatal disorders remained the leading cause of death in children younger than 5 years in 2019, followed by lower respiratory infections, diarrhoeal diseases, congenital birth defects, and malaria. The global optimum analysis suggests NMR could be reduced to as low as 0·80 (95% UI 0·71–0·86) deaths per 1000 livebirths and U5MR to 1·44 (95% UI 1·27–1·58) deaths per 1000 livebirths, and in 2019, there were as many as 1·87 million (95% UI 1·35–2·58; 37% [95% UI 32–43]) of 5·05 million more deaths of children younger than 5 years than the survival potential frontier.
Interpretation: Global child mortality declined by almost half between 2000 and 2019, but progress remains slower in neonates and 65 (32%) of 204 countries, mostly in sub-Saharan Africa and south Asia, are not on track to meet either SDG 3.2 target by 2030. Focused improvements in perinatal and newborn care, continued and expanded delivery of essential interventions such as vaccination and infection prevention, an enhanced focus on equity, continued focus on poverty reduction and education, and investment in strengthening health systems across the development spectrum have the potential to substantially improve U5MR. Given the widespread effects of COVID-19, considerable effort will be required to maintain and accelerate progress