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We present the Evolutionary Map of the Universe (EMU) survey conducted with the Australian Square Kilometre Array Pathfinder (ASKAP). EMU aims to deliver the touchstone radio atlas of the southern hemisphere. We introduce EMU and review its science drivers and key science goals, updated and tailored to the current ASKAP five-year survey plan. The development of the survey strategy and planned sky coverage is presented, along with the operational aspects of the survey and associated data analysis, together with a selection of diagnostics demonstrating the imaging quality and data characteristics. We give a general description of the value-added data pipeline and data products before concluding with a discussion of links to other surveys and projects and an outline of EMU’s legacy value.
With the ongoing emergence of SARS-CoV-2 variants, there is a need for standard approaches to characterize the risk of vaccine breakthrough. We aimed to estimate the association between variant and vaccination status in case-only surveillance data. Included cases were symptomatic adult laboratory-confirmed COVID-19 cases, with onset between January 2021 and April 2022, reported by five European countries (Estonia, Ireland, Luxembourg, Poland, and Slovakia) to The European Surveillance System. Associations between variant and vaccination status were estimated using conditional logistic regression, within strata of country and calendar date, and adjusting for age and sex. We included 80,143 cases including 20,244 Alpha (B.1.1.7), 152 Beta (B.1.351), 39,900 Delta (B.1.617.2), 361 Gamma (P.1), 10,014 Omicron BA.1, and 9,472 Omicron BA.2. Partially vaccinated cases were more likely than unvaccinated cases to be Beta than Alpha (adjusted odds ratio [aOR] 2.48, 95% CI 1.29–4.74), and Delta than Alpha (aOR 1.75, 1.31–2.34). Fully vaccinated cases were relative to unvaccinated cases more frequently Beta than Alpha (aOR 4.61, 1.89–11.21), Delta than Alpha (aOR 2.30, 1.55–3.39), and Omicron BA.1 than Delta (aOR 1.91, 1.60–2.28). We found signals of increased breakthrough infections for Delta and Beta relative to Alpha, and Omicron BA.1 relative to Delta.
To investigate the symptoms of SARS-CoV-2 infection, their dynamics and their discriminatory power for the disease using longitudinally, prospectively collected information reported at the time of their occurrence. We have analysed data from a large phase 3 clinical UK COVID-19 vaccine trial. The alpha variant was the predominant strain. Participants were assessed for SARS-CoV-2 infection via nasal/throat PCR at recruitment, vaccination appointments, and when symptomatic. Statistical techniques were implemented to infer estimates representative of the UK population, accounting for multiple symptomatic episodes associated with one individual. An optimal diagnostic model for SARS-CoV-2 infection was derived. The 4-month prevalence of SARS-CoV-2 was 2.1%; increasing to 19.4% (16.0%–22.7%) in participants reporting loss of appetite and 31.9% (27.1%–36.8%) in those with anosmia/ageusia. The model identified anosmia and/or ageusia, fever, congestion, and cough to be significantly associated with SARS-CoV-2 infection. Symptoms’ dynamics were vastly different in the two groups; after a slow start peaking later and lasting longer in PCR+ participants, whilst exhibiting a consistent decline in PCR- participants, with, on average, fewer than 3 days of symptoms reported. Anosmia/ageusia peaked late in confirmed SARS-CoV-2 infection (day 12), indicating a low discrimination power for early disease diagnosis.
We are less optimistic than Madole & Harden that family-based genome-wide association studies (GWASs) will lead to significant second-generation causal knowledge. Despite bearing some similarities, family-based GWASs and randomised controlled trials (RCTs) are not identical. Most RCTs assess a relatively homogenous causal stimulus as a treatment, whereas GWASs assess highly heterogeneous causal stimuli. Thus, GWAS results will not translate so easily into second-generation causal knowledge.
The short fragment prompting this study is a kabbalistic inquiry into three of the positive commandments in which women are especially obligated—the so-called commandments of Hannah. When accounting for these commandments in kabbalistic terms, the fragment endorses the ritual efficacy of Jewish women. It does this in a manner analogous to descriptions of commandments performed by men, in which the practitioner is vested with the power of unifying the divinity and, as a result, drawing down its influence. The sizeable literature on the commandments produced by medieval kabbalists abounds with such descriptions, from which scholars have long sourced information concerning the practices of medieval men performing “Jewish mysticism.” The fragment on the commandments of Hannah urges a reassessment of how the literature of medieval kabbalah constructs women’s ritual efficacy. After gauging that text’s provenance and surveying a host of comparable traditions from authoritative texts, the study proceeds to ask: Do the rationales of the three commandments of Hannah presuppose the application—by women—of esoteric knowledge during ritual performances? The article also highlights the lack of correspondence between (a) the occasional affirmations of women’s sacramental efficacy in the texts and (b) the negative consensus concerning the social-historical representation of female practitioners of kabbalah. Without attempting to overturn this consensus, the study aims to recover a phenomenology of commandments performed specifically by women, which is shown to be a rare, albeit representative, feature of medieval kabbalah.
We discuss the $\ell $-adic case of Mazur’s ‘Program B’ over $\mathbb {Q}$: the problem of classifying the possible images of $\ell $-adic Galois representations attached to elliptic curves E over $\mathbb {Q}$, equivalently, classifying the rational points on the corresponding modular curves. The primes $\ell =2$ and $\ell \ge 13$ are addressed by prior work, so we focus on the remaining primes $\ell = 3, 5, 7, 11$. For each of these $\ell $, we compute the directed graph of arithmetically maximal $\ell $-power level modular curves $X_H$, compute explicit equations for all but three of them and classify the rational points on all of them except $X_{\mathrm {ns}}^{+}(N)$, for $N = 27, 25, 49, 121$ and two-level $49$ curves of genus $9$ whose Jacobians have analytic rank $9$.
Aside from the $\ell $-adic images that are known to arise for infinitely many ${\overline {\mathbb {Q}}}$-isomorphism classes of elliptic curves $E/\mathbb {Q}$, we find only 22 exceptional images that arise for any prime $\ell $ and any $E/\mathbb {Q}$ without complex multiplication; these exceptional images are realised by 20 non-CM rational j-invariants. We conjecture that this list of 22 exceptional images is complete and show that any counterexamples must arise from unexpected rational points on $X_{\mathrm {ns}}^+(\ell )$ with $\ell \ge 19$, or one of the six modular curves noted above. This yields a very efficient algorithm to compute the $\ell $-adic images of Galois for any elliptic curve over $\mathbb {Q}$.
In an appendix with John Voight, we generalise Ribet’s observation that simple abelian varieties attached to newforms on $\Gamma _1(N)$ are of $\operatorname {GL}_2$-type; this extends Kolyvagin’s theorem that analytic rank zero implies algebraic rank zero to isogeny factors of the Jacobian of $X_H$.
This study aimed to explore the association between hyperglycemia in pregnancy (type 2 diabetes (T2D) and gestational diabetes mellitus (GDM)) and child developmental risk in Europid and Aboriginal women.
PANDORA is a longitudinal birth cohort recruited from a hyperglycemia in pregnancy register, and from normoglycemic women in antenatal clinics. The Wave 1 substudy included 308 children who completed developmental and behavioral screening between age 18 and 60 months. Developmental risk was assessed using the Ages and Stages Questionnaire (ASQ) or equivalent modified ASQ for use with Aboriginal children. Emotional and behavioral risk was assessed using the Strengths and Difficulties Questionnaire. Multivariable logistic regression was used to assess the association between developmental scores and explanatory variables, including maternal T2D in pregnancy or GDM.
After adjustment for ethnicity, maternal and child variables, and socioeconomic measures, maternal hyperglycemia was associated with increased developmental “concern” (defined as score ≥1 SD below mean) in the fine motor (T2D odds ratio (OR) 5.30, 95% CI 1.77–15.80; GDM OR 3.96, 95% CI 1.55–10.11) and problem-solving (T2D OR 2.71, 95% CI 1.05–6.98; GDM OR 2.54, 95% CI 1.17–5.54) domains, as well as increased “risk” (score ≥2 SD below mean) in at least one domain (T2D OR 5.33, 95% CI 1.85–15.39; GDM OR 4.86, 95% CI 1.95–12.10). Higher maternal education was associated with reduced concern in the problem-solving domain (OR 0.27, 95% CI 0.11–0.69) after adjustment for maternal hyperglycemia.
Maternal hyperglycemia is associated with increased developmental concern and may be a potential target for intervention so as to optimize developmental trajectories.
Luskin and Bullock’s (2011) randomized experiment on live-interview respondents found no evidence that American National Election Studies and Time-Sharing Experiments for the Social Sciences respondents hide knowledge behind the “don’t know” (DK) option. We successfully replicated their finding using two online platforms, the Cooperative Congressional Election Study and Google Surveys. However, we obtained different results on Amazon’s Mechanical Turk (MTurk). We attribute this difference to MTurkers’ experience with attention checks and other quality-control mechanisms, which condition them to avoid errors. This conditioning leads MTurkers to hide knowledge behind DK in ways not observed on other platforms. Researchers conducting political knowledge experiments or piloting surveys on MTurk should be aware of these differences.
The Tiananmen protests and Beijing massacre of 1989 were a major turning point in recent Chinese history. In this new analysis of 1989, Jeremy Brown tells the vivid stories of participants and victims, exploring the nationwide scope of the democracy movement and the brutal crackdown that crushed it. At each critical juncture in the spring of 1989, demonstrators and decision makers agonized over difficult choices and saw how events could have unfolded differently. The alternative paths that participants imagined confirm that bloodshed was neither inevitable nor necessary. Using a wide range of previously untapped sources and examining how ordinary citizens throughout China experienced the crackdown after the massacre, this ambitious social history sheds fresh light on events that continue to reverberate in China to this day.
If the elders who forced Hu Yaobang from office had retired from politics, Hu and Zhao Ziyang would have had time and space to deepen economic and political reforms, a scenario that would have reduced the chances of protests and violence in 1989. The two-child policy proposed by demographer Liang Zhongtang would have been less harsh than the one-child policy, but a cultural shift in sexual norms would have been necessary to prevent the traumas experienced by Chai Ling, Lu Decheng, and Wang Qiuping.
Hu Yaobang's death sparked student protests in Beijing, which escalated when protesters felt ignored by officials after Hu's memorial service on April 22, 1989. General Secretary Zhao Ziyang and Premier Li Peng disagreed about how to handle the protests before Zhao left for North Korea on April 23. In Zhao's absence, Li and other officials presented their views to Deng Xiaoping, who labeled the protests "turmoil," sparking a march of approximately 100,000 people disputing this characterization.
The experiences of the hundreds of cities throughout China where Communist Party leaders exercised relative restraint during the protests, blockades, and strikes offer countless alternative paths and show how unnecessary it was for the PLA to open fire in Beijing on June 3 and 4. Student leaders thought that bloodshed in Beijing would spark a nationwide uprising. Enraged protesters did shut down traffic and tried to organize strikes, but failed to bring about regime change. One alternative path in 1989 was 1911-style provincial declarations of independence. But in 1989, local leaders were not inclined to turn against the Party to which they owed their careers and political futures.
Even though some participants predicted that bloodshed in Beijing would mark the end of Communist rule, there was no nationwide uprising in the aftermath of the massacre because killing, arrests, and purges sowed fear and underlined the high costs of direct resistance. Another alternative path many called for in the aftermath of the massacre was for an official re-evaluation (pingfan) of June Fourth. Some victims demand a reappraisal, while others reject the notion that the Communist Party is a legitimate arbiter of Chinese history.
Archival documents from a construction and engineering team show that people went through the motions in a slapdash way when filling out forms detailing what they had done in April, May, and June 1989.
There were many turning points and key moments in spring 1989 that could have pushed events in new directions and led to different outcomes. They included inviting students to attend Hu Yaobang's memorial service, Zhao Ziyang not traveling to North Korea, protesters escalating their civil disobedience through self-immolation, and convening a special session of the National People's Congress (NPC) to rescind martial law. These were all genuine possibilities, but they were made less possible by the realities of old-man politics.
There were many alternatives to shooting unarmed civlians in Beijing. Soldiers or police could have used non-deadly force. Leaders could have ignored the protesters and waited them out. More military officials could have followed the lead of General Xu Qinxian, who refused to carry out martial law, or of He Yanran, who passively resisted on June 4, 1989, and allowed soldiers under his command to disperse. The massacre was not inevitable.
Political opening, romantic freedoms, economic reforms, and such moderate political leaders as Hu Yaobang and Zhao Ziyang sparked happiness for many people in China during the 1980s, but their high hopes created heightened expectations that would be dashed by the end of the decade.