I have been thinking about this sort of thing often.

On a Sunday morning, after my night work, before coming home to sleep, I go out to a nearby shopping center and find a father who is about my age, who seems to be enjoying shopping with his wife and child. With men past age thirty, a marriage rush seems to begin like an angry wave. My friends from the past are deciding to marry one by one.

On the day of the sarin gas attack on the Tokyo subway system in March 1995, we were shocked beyond words. It was the first act of indiscriminate terrorism in Japan. It was also the first time for most of us to hear the term “sarin.” But this nerve gas with an unfamiliar name was actually released inside subway cars, killing and injuring many people.

This article explores the relationship between rural villages and Japan's colonies during the wartime period, with particular reference to the emigration of Japanese farmers to Manchuria (Manchukuo). My aim is to identify some of the key characteristics of Japanese emigration during this period and to reveal some of the distinctive features of the Manchurian case. I will focus mainly on Yamato Village in Yamagata Prefecture. The prefecture itself ranked second in the nation as a source of emigrants to Manchuria, and with Ohinata Village in Nagano Prefecture and Nango Village in Miyagi Prefecture it was one of the top three villages in all Japan in terms of the total number of emigrants produced.

Direct numerical simulations are performed to study turbulence generated by the interaction of multiple temporally evolving circular jets with jet Mach numbers $M_J=0.6$ and $1.6$, and a jet Reynolds number of 3000. The jet interaction produces decaying, nearly homogeneous isotropic turbulence, where the root-mean-squared (r.m.s.) fluctuation ratio between the streamwise and transverse velocities is approximately 1.1, consistent with values observed in grid turbulence. In the supersonic case, shock waves are generated and propagate for a long time, even after the turbulent Mach number decreases. A comparison between the two Mach number cases reveals compressibility effects, such as reductions in the velocity derivative skewness magnitude and the non-dimensional energy dissipation rate. For the r.m.s. velocity fluctuations, $u_{rms}$, and the integral scale of the streamwise velocity, $L_u$, the Batchelor turbulence invariant, $u_{rms}^2 L_u^5$, becomes nearly constant after the turbulence has decayed for a certain time. In contrast, the Saffman turbulence invariant, $u_{rms}^2 L_u^3$, continuously decreases. Furthermore, temporal variations of $u_{rms}^2$ and $L_u$ follow power laws, with exponents closely matching the theoretical values for Batchelor turbulence. The three-dimensional energy spectrum $E(k)$, where $k$ is the wavenumber, exhibits $E(k) \sim k^4$ for small wavenumbers. This behaviour is consistently observed for both Mach number cases, indicating that the modulation of small-scale turbulence by compressibility effects does not affect the decay characteristics of large scales. These results demonstrate that jet interaction generates Batchelor turbulence, providing a new direction for experimental investigations into Batchelor turbulence using jet arrays.

Human-induced pressures such as climate and land-use changes in the Anthropocene disproportionately threaten island ecosystems and the endemic species they host. Shedding light on the ecological needs of island species is key to the conservation of these fragile ecosystems and their unique species. Here we present the ecological needs of a bat species endemic to Sardinia, the long-eared bat Plecotus sardus, and analyse the relationship between this Critically Endangered species and the insular environment at different spatial scales to inform action for its conservation. We show that besides displaying a unique phenology and roost use, the species is closely associated with the dry broadleaf forests of native oaks Quercus ilex and Quercus suber at all scales and, in contrast, is negatively affected by coniferous stands, open pastures and urban environments. Our results not only provide key information for the conservation of P. sardus but also provide insights into the unique adaptations of insular endemic species to the fragile island ecosystems, highlighting the importance of ecological studies to informing conservation in biodiversity hotspots. We also demonstrate that protection and restoration of key habitats, particularly within 2 km of roosts, are key to protecting the few known reproductive colonies.

In recent decades, analysing the progression of mortality rates has become very important for both public and private pension schemes, as well as for the life insurance branch of insurance companies. Traditionally, the tools used in this field were based on stochastic and deterministic approaches that allow extrapolating mortality rates beyond the last year of observation. More recently, new techniques based on machine learning have been introduced as alternatives to traditional models, giving practitioners new opportunities. Among these, neural networks (NNs) play an important role due to their computation power and flexibility to treat the data without any probabilistic assumption. In this paper, we apply multi-task NNs, whose approach is based on leveraging useful information contained in multiple related tasks to help improve the generalized performance of all the tasks, to forecast mortality rates. Finally, we compare the performance of multi-task NNs to that of existing single-task NNs and traditional stochastic models on mortality data from 17 different countries.

During the recent years the Democratic People's Republic of Korea (DPRK) has rapidly advanced to the rank of a nuclear power, drawing simultaneously lots of attention on itself both by other states and the media. We argue that this means much more than only increase in its weaponry. Combined with its decades old steadfast strive for independence and opposition to the United States, this means a qualitative change in its position in the international system. The theoretical tool used for this analysis is not statistical size, but rather the style of behaviour. Small and great powers tend to have different styles of behaviour. Small powers usually orient towards acting as “good international citizens” performing important integrative and stabilizing tasks for the system, while great powers tend to play classical realist power games, ranging from readiness for military conflict to willingness for occasionally breaking international law. Despite its small size, North Korea systematically behaves like a great power, and its actions can meaningfully be interpreted from that angle.

Mori Ogai (1862-1922), novelist, essayist, translator and one of the towering figures of the literary world in the Meiji and Taisho eras, was a master stylist. His prose style could not be farther away from the flowing, often seemingly random and excessively emotional, style of Miyazawa Kenji. It is controlled, concise, rational, formal, and chockablock with erudite Japanese and foreign historical references, the latter being chiefly classical Chinese and modern German. His style exerted an astounding influence on modern Japanese literature, inspiring an author born less than three years after his death, Mishima Yukio. Mishima, a master of clear and rich style in Japanese, took the pen directly from Ogai's hand.

Though historians have often traced the evolution of LGBT ‘communities’ in the United States, they have left the genealogy of queer ideas of ‘community’ underexamined. This article begins to address this lacuna by charting the bifurcated early history of these ideas in the nation’s ‘gay capital’, San Francisco. It identifies homophile activist José Sarria’s 1961 campaign for San Francisco city supervisor as the event that introduced the notion of a ‘gay community’ to lasting effect into local homophile organizing. Sarria’s camp mobilized the idea as a resistance tool for the fight against state repression. In the following years, the concept established itself across local homophile activism. Simultaneously with the rise of ‘gay community’, some homophile leaders also developed coalitional visions of ‘community’. These were inspired by Black freedom organizing and prioritized building community with other marginalized groups. Only a mid-1960s struggle over the orientation of the country’s first homophile community centre led to a lasting sidelining of this coalitional tradition. The reconstruction of this bipartite history challenges enduring myths of a monolithically conservative homophile movement, and helps explain the subsequent success of a homonormative gay politics in the late 1960s and 1970s.

Fully relativistic particle-in-cell (PIC) simulations are crucial for advancing our knowledge of plasma physics. Modern supercomputers based on graphics processing units (GPUs) offer the potential to perform PIC simulations of unprecedented scale, but require robust and feature-rich codes that can fully leverage their computational resources. In this work, this demand is addressed by adding GPU acceleration to the PIC code Osiris. An overview of the algorithm, which features a CUDA extension to the underlying Fortran architecture, is given. Detailed performance benchmarks for thermal plasmas are presented, which demonstrate excellent weak scaling on NERSC's Perlmutter supercomputer and high levels of absolute performance. The robustness of the code to model a variety of physical systems is demonstrated via simulations of Weibel filamentation and laser-wakefield acceleration run with dynamic load balancing. Finally, measurements and analysis of energy consumption are provided that indicate that the GPU algorithm is up to ${\sim }$14 times faster and $\sim$7 times more energy efficient than the optimized CPU algorithm on a node-to-node basis. The described development addresses the PIC simulation community's computational demands both by contributing a robust and performant GPU-accelerated PIC code and by providing insight into efficient use of GPU hardware.

Bibliometric research illuminates the scientific development of soil health (SH) studies in the Brazilian Semiarid, which are crucial for sustainable agriculture and mitigating climate change impacts. However, research trends on SH in the Brazilian Semiarid are still not well understood. This study aimed to illustrate how SH has been addressed in research concerning the Brazilian Semiarid. Terms such as ‘soil health,’ ‘soil quality,’ ‘biological quality,’ ‘chemical quality,’ ‘physical quality,’ as well as ‘Caatinga,’ ‘Brazilian Semiarid,’ and ‘Brazilian Northeast’ were searched in the Scopus® database. Bibliometric parameters were catalogued by the number of publications per year, most cited articles, primary institutions, main journals, and keyword frequency. The articles were evaluated based on the examination of chemical, physical, and biological indicators, and a similarity test was conducted to group articles according to these indicators. The bibliometric analysis reveals a significant increase in scientific output since 2020. Embrapa research centres contribute significantly to this expanding body of knowledge, with the leading journal ‘Revista Caatinga’ reflecting a specialized focus on the region’s unique challenges. The most evaluated indicators were pH, soil organic carbon, P, Ca2+, Mg2+, K+, and bulk density, but the prevalence of biological indicators, such as soil organic carbon (SOC), activity of enzymes such as alkaline and acid phosphatase, and ß-glucosidase, microbial activity, and soil fauna, underscores key research themes. These findings highlight the practical implications of SH research, but while increased research is commendable and increasingly necessary, studies are still scarce. Increased research is vital for the development of strategies that contribute to the long-term sustainability of the Brazilian Semiarid region.

Objectives: Several studies have shown that acetylcholinesterase inhibitors (AChEIs) decrease delta or theta activity, increase alpha activity on Electroencephalography (EEG) in Alzheimer’s disease (AD) patients. The effects of memantine on EEG in AD patients are not as well understood as those of AChEIs. The present study investigated the electrocortical effects of 3 months memantine medication in AD patients.

Methods: EEG was recorded in 28 patients with AD (mean age 83.3 ± 4.6 years, 19 females) before and 3 months after the onset of memantine medication. Source localization was applied to the EEG using exact low-resolution brain electromagnetic tomography (eLORETA) in 8 frequency bands (delta, theta, alpha-1, alpha-2, beta-1, beta- 2, beta-3, gamma). Differences in source strengths from before to after memantine treatment were compared per frequency band using t-statistics (corrected for multiple testing over frequency bands and voxels).

Results: Theta activity significantly decreased in bilateral anterior cingulate gyrus, bilateral posterior cingulate gyrus, right parahippocampal gyrus, right insula, right fusiform gyrus, bilateral precuneus, right uncus and right temporal gyrus. Alpha-1 and alpha-2 activity decreased in the anterior cingulate gyrus. Beta-1 activity significantly decreased in the anterior and posterior cingulate gyrus. There were no areas of increased EEG activity in any frequency bands.

Conclusions: We found that memantine reduced theta activity similarly to AChEIs. This finding may be related to the cognitive improvements of memantine. Whereas the decrease of beta-1, alpha-1 and alpha-2 activity in the anterior cingulate gyrus was different from AChEIs. Further studies are required to elucidate these differences.

The economic importance of insect pests in agricultural fields and the potential biological control by their natural enemies warrant foundational studies for the development of integrated pest management strategies. An insect survey was conducted in alfalfa (Fabaceae) seed production fields in southern Alberta, Canada, during the bud, flowering, and seed crop stages in 2020 and 2021. We examined the seasonal abundance of Hypera postica (Gyllenhal) (Coleoptera: Curculionidae), Adelphocoris lineolatus (Goeze) (Hemiptera: Miridae), Lygus spp. Hahn (Hemiptera: Miridae), and 12 natural enemy taxa. We also examined the seasonal abundance, richness, and diversity of generalist predators and the seasonality of the two H. postica parasitoids, Bathyplectes curculionis (Thomson) (Hymenoptera: Ichneumonidae) and Oomyzus incertus (Ratzeburg) (Hymenoptera: Eulophidae). The seasonality of pests and natural enemies was inconsistent between years. Hypera postica larvae, B. curculionis, and O. incertus were present from mid-June to mid-August. However, we detected no correlations between H. postica larvae and its two parasitoids in either year. A number of generalist predators were correlated with A. lineolatus and Lygus spp. Further research is needed to understand the effects of environmental and biotic factors on the seasonality of pests and natural enemies in alfalfa seed production fields, and the insects’ trophic interactions.

A positive association has been demonstrated between consumption of sucrose-sweetened beverages and the prevalence of metabolic dysfunction-associated steatotic liver disease (MASLD). Since the administration of 30 % sucrose in the drinking water (sucrose-rich diet (SRD)) to rats has proven to be a good model of systemic insulin resistance, the aim of our study was to analyse the effect of caloric restriction applied on SRD-treated rats by switching back to a standard diet, on liver morphology, function and metabolism. Consumption of an SRD causes a metabolic shift towards gluconeogenesis and fatty acid synthesis leading to an increase in TAG levels in plasma and in the liver that were associated with a decrease in insulin sensitivity. Moreover, our results show that animals fed an SRD develop steatohepatitis characterised by the generation of oxidative stress, endoplasmic reticulum (ER) stress, inflammation and apoptosis. Although no histological changes were observed after a 2-week caloric restriction, key pathways associated with the progression of MASLD as inflammation, ER stress and apoptosis were slowed down. Notably, this 2-week intervention also increased liver insulin sensitivity (evaluated by AKT activity in this tissue) and drove the lipid metabolic profile towards oxidation, thus lowering circulating TAG levels. In summary, the present study uncovers underlying mechanisms affected, and their metabolic consequences, during the first stages of the phenotypic reversal of steatohepatitis by switching back to a standard diet after receiving sucrose-sweetened water for several weeks.

This study examined associations between pregnancy and infant birth outcomes with child telomere length at age 17 years; and investigated if there are sex differences between pregnancy complications and telomere length. We utilised the population-based prospective Raine cohort study in Western Australia, Australia. 2900 pregnant women were recruited at 16–20 weeks’ gestation (Gen 1), and their children (Gen 2) were followed up over several years. Generalised linear models were used to examine relationships between pregnancy or birth outcomes (gestational diabetes, pre-eclampsia, preterm birth, low birth weight, macrosomia), and as a composite, with telomere length, measured via a DNA sample from blood at 17 years of age. Analyses were adjusted for a range of confounders. Among the 1202 included children, there were no differences in child telomere length for any of the individual maternal or birth weight pregnancy outcomes nor were there any significant interactions between each of the complications (individual or composite) and the sex of the child. However, females born from any of the 5 adverse outcomes had shorter telomeres (estimated mean (SE) = -0.159 (0.061), p = 0.010) than females born in the absence of these complications. Specifically, females born from a pre-eclamptic pregnancy had shorter telomeres than females not born from a pre-eclamptic pregnancy (estimated mean (SE) = -0.166 (0.072), p = 0.022). No relationships were observed in males. Further longitudinal studies are needed to understand mediating factors that are important in predicting offspring telomere length and the necessity to investigate females and males independently.

This article is an exploratory analysis of the use of humour in Environmental Education, from the perspective of 10 Spanish specialists and educators. Research is carried out using a qualitative methodology through semistructured interviews and a focus group of specialists. The results point to a positive perception of the use of humour and the need for flexibility on the part of the educator to adapt to the particularities of the group and the topics addressed. The differences of opinion lie in the limitations in the use of humour as well as in the recommendations made by the specialists participating in the study, which, given their background, can be considered relevant to the use of humour for environmental education in the Spanish context.

Scale dependence of local shearing motion is investigated experimentally in decaying homogeneous isotropic turbulence generated through multiple-jet interaction. The turbulent Reynolds number, based on the Taylor microscale, is between approximately 900 and 400. Velocity fields, measured using particle image velocimetry, are analysed through the triple decomposition of a low-pass filtered velocity gradient tensor, which quantifies the intensities of shear and rigid-body rotation at a given scale. These motions manifest predominantly as layer and tubular vortical structures, respectively. The scale dependence of the moments of velocity increments, associated with shear and rigid-body rotation, exhibits power-law behaviours. The scaling exponents for shear are in quantitative alignment with the anomalous scaling of the velocity structure functions, suggesting that velocity increments are influenced predominantly by shearing motion. In contrast, the exponents for rigid-body rotation are markedly smaller than those predicted by Kolmogorov scaling, reflecting the high intermittency of rigid-body rotation. The mean flow structure associated with shear at intermediate scales is investigated with conditional averages around locally intense shear regions in the filtered velocity field. The averaged flow field exhibits a shear layer structure with aspect ratio approximately 4.5, surrounded by rotating motion. The analysis at different scales reveals the existence of self-similar structures of shearing motion across various scales. The mean velocity jump across the shear layer increases with the layer thickness. This relationship is well predicted by Kolmogorov's second similarity hypothesis, which is useful in predicting the mean characteristics of shear layers across a wide range of scales.

This study documents several correlations observed during the first run of the plasma wakefield acceleration experiment E300 conducted at FACET-II, using a single drive electron bunch. The established correlations include those between the measured maximum energy loss of the drive electron beam and the integrated betatron X-ray signal, the calculated total beam energy deposited in the plasma and the integrated X-ray signal, among three visible light emission measuring cameras and between the visible plasma light and X-ray signal. The integrated X-ray signal correlates almost linearly with both the maximum energy loss of the drive beam and the energy deposited into the plasma, demonstrating its usability as a measure of energy transfer from the drive beam to the plasma. Visible plasma light is found to be a useful indicator of the presence of a wake at three locations that overall are two metres apart. Despite the complex dynamics and vastly different time scales, the X-ray radiation from the drive bunch and visible light emission from the plasma may prove to be effective non-invasive diagnostics for monitoring the energy transfer from the beam to the plasma in future high-repetition-rate experiments.