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This study presents an in-depth analysis of the energy dissipation and momentum balance during a laminar planar hydraulic jump in a viscous free surface flow, with shallow flow theory used to estimate the relevant jump parameters. The inclusion of momentum and kinetic energy correction factors incorporates the influence of the fluid nature. The fluid is described by the generalised Herschel–Bulkley model with Papanastasiou regularisation, which reduces to the Bingham plastic, power-law and Newtonian models under relevant limiting conditions. The analysis, extensively validated against experimental and simulated data, is explored to understand the physics of free surface flow during jump formation. Energy dissipation increases with an increase in the flow behaviour index n, flow consistency index k and yield stress τo since each of them increases the apparent viscosity. Interestingly, it is higher in the supercritical (upstream) compared with the subcritical (downstream) zone. For constant discharge rate and film thickness, the specific energy depends on the velocity profile and is thus a function of n and τo but not k, and the mechanism of influence of n and τo are also different. For a generalised approach, energy dissipation and jump parameters are discussed as a function of relevant non-dimensional numbers obtained from SFT. Energy dissipation during a hydraulic jump in non-Newtonian liquids is a hitherto unexplored aspect. In fact, energy dissipation during a planar jump in a viscous Newtonian liquid is also rare, although hydraulic jumps are primarily used as energy dissipators in free surface flows.
The ambiguous relationship between anti-statist anarchists and national liberation movements became central to American and international anarchist disagreements over the proper course of action during the First World War. American anarchists unanimously decried the US annexation of Cuba, the Philippines, Hawaii and other territories in the Caribbean and Pacific. After the United States officially joined the war in April 1917, American anarchists became absorbed in struggles against conscription, censorship, deportation and Allied intervention in the Russian Civil War. Instead, in many ways, the war marked the beginning of the end for anarchism as a mass movement in the United States. It ushered in an unprecedented period of American nationalism, xenophobia, political repression and immigration restriction. The fact that all the factions had based their wartime positions on the same shared commitment to anti-colonialism helped make such reconciliation possible.
Roselee Goldberg argues that artists in Eastern Europe utilised body art because it left little trace of the unofficial and experimental creative activity that it engendered. This chapter examines the manner in which artists from the East used their bodies in performance to navigate the varying degrees of state control over artistic production and cultivate their own forms of individual integration and self-expression. The artist's body can undergo its most significant transformation by being pushed to its physical limits, sometimes to the point of significant harm or near-destruction. Branislav Jakovljevic has written about the performances that took place at the Student Culture Centre in the context of the protests in Belgrade, among other places across the world, in 1968. The Autoperforatsions artisten had consistently staged visceral, destructive and absurdist performances and actions throughout the 1980s in Dresden.
Administrative burden describes the learning costs, psychological costs, and compliance costs people face when attempting to interface with the government, particularly in seeking a benefit. Algorithmic and automated processes offer the potential of reducing administrative burdens, but scant empirical research has determined to what, if any effect. This study uses the case of criminal record expungement in two policy contexts: traditional, court petition-based systems and newly enacted automated systems, to understand if and how administrative burden persists, and whether and how these burdens operate differently in the context of the criminal legal system. Drawing on interviews with 105 expungement-eligible people, we find that while automated expungement schemes shift the burden from petitioner to state to initiate the process, automation inadvertently creates new administrative burdens via failure to notify, partial clearances, and opaque data processes. Furthermore, respondents described how automation failed to provide a sense of confirmation from the state that their sentence was truly completed, rehabilitation had been acknowledged, or that collateral consequences should no longer wield the same power. Overall, we argue that leveraging automation to reduce burdens must include information availability by design; otherwise policy reforms may fail to fully achieve their goals.
This cross-sectional study examines differentials in age at marriage, collecting data from 665 ever-married women in Howrah district, West Bengal, using a mixed-methods approach across three generational cohorts. Quantitative analyses included ANOVA and multinomial logistic regression, complemented by qualitative interviews to contextualize marriage timing. Results revealed a non-linear trajectory of marriage age across generations. Mean age at marriage was 21.4 years, 23.2 years, and 19.5 years in Generation I, Generation II, and Generation III, respectively, with significant differences. MLR results showed respondents in Generation II had higher odds of marrying at ages 19–24 (RRR = 1.5, CI = 0.6–2.7) and ≥25 years (RRR = 1.4, CI = 0.9–4.0), whereas Generation III women had lower odds at ages 19–24 (RRR = 0.3, CI = 0.2–0.9) and ≥25 years (RRR = 0.6, CI = 0.1–0.9), compared to Generation I. Urban women showed delayed marriage at ages 19–24 (RRR = 3.1, CI = 2.6–11.5) and ≥25 years (RRR = 4.5, CI = 2.2–15.5). Higher educated women increased the likelihood of delaying marriage at ages 19–24 (RRR = 1.6, CI = 0.4–1.9) and ≥25 years (RRR = 1.2, CI = 0.8–1.6). Fathers’ secondary education was associated with marriage at ages 19–24 (RRR = 1.5, CI = 1.0–2.3) and ≥25 years (RRR = 4.6, CI = 1.3–15.8), and fathers’ higher education was associated with marriage at ≥25 years (RRR = 2.6, CI = 1.3–12.8); mothers’ secondary education was associated with marriage at ages 19–24 (RRR = 1.7, CI = 1.0–2.9) and ≥25 years (RRR = 3.1, CI = 1.9–12.3), and mothers’ higher education was associated with marriage at ≥25 years (RRR = 3.2, CI = 1.6–10.4). Respondents in white-collar jobs were more likely to delay marriage at 19–24 (RRR = 1.5, CI = 0.3–2.0) and ≥25 years (RRR = 1.6, CI = 0.8–3.4). White-collar employment of fathers increased the odds of marriage at ages 19–24 (RRR = 1.7, CI = 0.7–2.1) and ≥25 years (RRR = 1.6, CI = 0.4–2.6) and of mothers at ages 19–24 (RRR = 1.2, CI = 0.4–1.6) and ≥25 years (RRR = 1.1, CI = 0.3–1.9). Women from the upper wealth quintile were more likely to marry at ≥25 years (RRR = 1.2, CI = 0.5–2.8). Muslim women showed significantly less likelihood to marry at ≥25 years (RRR = 0.2, CI = 0.1–0.6). Ethnographic narratives revealed tensions between aspirations for daughters’ education and parental anxieties related to employment insecurity, dowry, and premarital relationships, shaping marriage decisions.
Focusing on two souvenirs: a ‘peep egg’ (after 1851), a stone egg decorated with a floral pattern, inscribed ‘A present from the Crystal Palace’ (Bill Douglas Collection, Exeter University) and a needle case in carved bone (c. 1860-7) in the shape of a folded umbrella or parasol (V&A), this chapter discusses the spy-glass keepsake’s role as both a visual record of the Sydenham Crystal Palace and as an emblem of popular visual memories of the site. Such keepsakes stand testimony to a prevalent affection or fondness for the Palace in the latter part of the nineteenth century, or at the very least, its currency in popular culture and the growing leisure industry.
Cooperative for American Remittances to Europe (CARE) had started operations in Colombia back in 1954, in an attempt to bring food and milk to underfed Colombian children. In cooperation with the Colombian Ministry of Health, the American agency had set up an agricultural surplus package program. In late February 1961 executive director Richard Reuter informed his colleagues that CARE had been approached by proponents of a yet to be established US organization named the Peace Corps with a request for cooperation. Within CARE, the upcoming cooperation was pushed forward with enormous efforts regarding staff assignments. The public response to the first Peace Corps draft announcement in cooperation with the Advertising Council was remarkable. The choice of Rutgers University as a training facility created the friction between CARE and the Peace Corps.
The Folio As You Like It is a document whose relation to original conditions and circumstances of performance within, possibly, at least three settings - court, public playhouse, private theatre - is at best uncertain. It offers some violent physical action, a sharp-witted clown with one foot firmly in the playhouse, a good deal of singing, and the recycling of a number of devices used by Shakespeare in previous romantic comedies. These include a structural division between court and country, a green world, and, driving the play's action, a voluble, witty and resourceful cross-dressed heroine. This chapter considers how the task might have been carried out within the frameworks of rehearsal and repertory. In order to situate Rosalind's role within the larger part-based ecology of playhouse rehearsal and performance practice, one needs to acknowledge the broader early modern context of part-based playmaking.
Playboy magazine has maintained some strong connections to James Bond, albeit in changing cultural circumstances, since the November 1965 issue. Though the social and cultural landscape of Britain and America has changed dramatically since the sixties, the use of the Bond and Playboy formulas has largely endured. This chapter picks up the historical thread at the point of the mid-1960s, and aspects of the Playboy-Bond relationship, in order to revisit and extend these insights into the years afterwards. It considers how Bond and Playboy remain interconnected both periodically in the formal sense, and as long-standing cultural icons representing the playboy lifestyle fantasy. This has been achieved with varying degrees of success over the years through, among other things, humour, affection and nostalgia as a means of (re)negotiating the past and the ongoing cultural associations of the playboy.
Antimicrobial resistance (AMR) is a growing public health threat, and we currently lack accurate measures to track and trend this resistance. We developed the antibiotic resistance index (ARI) that aggregates resistance of Gram-negative bacilli (GNB) into a single metric which can be tracked across healthcare settings and over time.
Methods:
Culture data were collected from adult patients who met the CDC adult sepsis event criteria across 10 Barnes-Jewish HealthCare (BJC) hospitals between January 2018 and December 2023. An antibiotic’s effective spectrum (AES) was calculated as the ratio of susceptible GNB to all identified GNB. The ARI was calculated as the sum of the AES to which the isolate was resistant. Using the 20 most common GNB and 15 most common anti-GNB antibiotics routinely tested in antibiograms, we calculated the ARI for each BJC hospital during the study years.
Results:
18,854 GNB cultured from 12,803 patients meeting CDC adult sepsis event criteria were included. AES varied between 0.15 for ampicillin and 0.94 for amikacin. A. calcoaceticus-baumannii complex had the highest ARI of 6.64 (IQR 4.00–9.28). Median hospital-level ARI fluctuated between 2.12 (IQR 0.40–3.83) in 2018 to 2.20 (IQR 0.34–3.86) in 2023. The ARI trajectories over time varied by medical center.
Conclusion:
ARI aggregates AMR in GNB and may facilitate monitoring across locations and over time. ARI and antibiotic effective spectra redefine narrow and broad spectrum of activity and offer a starting point for antibiotic utilization metrics.
While aids to hearing were ubiquitous in nineteenth century middle class culture, they have only recently attracted attention among historians. Many such devices were inscribed with patent markings officially approved by the London Patent Office. Others instead simply bore claims to expired patents or the name of apparent ‘patentees’: such inscriptions served to persuade prospective purchasers that certain devices were ‘genuine’ inventions. The purchase of hearing aids was thus subject to complex relationships between designers, users, and user-designers centred on issues of trust, identity and efficacy.Drawing on patent records, advertising, the writings of ‘deaf’ journalists and artefacts, this chapter explores the selling of hearing aids as both a commercial and cultural encounter. First it looks at how the Rein and Hawksley companies adopted different strategies with regard to patenting and engaging prospective customers. Second it examines how hard-of-hearing journalists critiqued the opportunist vendors that often cited patents in their ‘advertising’ as a guarantor of effectiveness. The chapter concludes by examining the lived experiences of hearing aids purchasers, showing how such research affords historians the opportunity to investigate the histories of the deaf and hard of hearing through the material culture they accessed, whether designed for them or sometimes even by them.
The similarities between the Jericho Episode (Luke 19.1–10) and the second Messenger Speech in Euripides’ Bacchae (1043–152) are so extensive that the most probable explanation is the existence of a direct genetic dependence of the first story on the second. By making this reference, the author of the Gospel portrays the figure of Zacchaeus as a ‘converted Pentheus’, while by comparing Jesus to the cruel Dionysus, who punishes Pentheus for his sin, he reveals the mercy of the God of Israel in a new light.
This chapter explores the current criminal and civil justice systems in England and Wales and compares their accessibility to the public, their value for money and their overall viability. The international credit crisis resulted in government cuts and streamlining has produced an appetite to reduce criminal and civil litigation. In the criminal justice system, fewer cases are prosecuted whilst in the civil justice system; there is a desire to deter litigation by a number of measures. This Chapter argues that this philosophy is detrimental to both systems resulting in the reduction of genuine litigation thereby rendering the accessibility to both systems difficult and unfair. Whilst their economic viability might appear to be sound, this Chapter maintains that overall they are not economically viable and there needs to be a fundamental change in philosophy and approach.