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The phenomenon of insect emergence represents a transfer of mass and energy from aquatic to terrestrial systems and is a critical part of ecosystem connectivity and functioning. Traditional methods of studying insect emergence rely on the capture of insects as they emerge and on morphological identification with taxonomic keys. This can be both time consuming and impact study populations, obstacles that can be removed with DNA obtained from biological remnants. The present proof-of-concept study investigated the potential of using exuviae collected from the water surface as a DNA source. Emergence trap samples and insect exuviae were collected from a pond and a small creek. Sample types were generally not statistically distinguishable, but the exuviae samples identified more orders containing amphibiotic insects and a higher level of diversity within these orders than the trap samples did. This higher level of diversity seen in exuviae samples may be due to limitations of emergence traps, including that they alter environmental variables in their collection area. We demonstrated that identification of emerging aquatic insects through metabarcoding of exuviae is a useful method for the study of insect emergence and could be used for biodiversity assessments and studies on emergence times and to better understand ecosystem connectivity.
This article presents the implementation of a new monopulse auto-tracking architecture at the Oran ground station (GS). This architecture is based on a metaheuristic particle swarm optimisation (PSO) algorithm, which measures and adjusts the Q(R) summation associated with the satellite’s main beam direction to ensure optimal synchronisation between the GS and the satellite in terms of antenna pointing. This implementation was validated through practical tests during ALSAT-2B satellite flybys, comprising two distinct scenarios. In the first scenario, the satellite captures new images while simultaneously transmitting data from previously recorded images, thus leading to a misalignment between its antenna and the GS. The second scenario focused solely on data transmission; the satellite being directly aligned with the GS. The results indicate that the pointing error accuracy remains below 0.6 degrees, in accordance with the nominal specifications, thereby enhancing communication performance with a higher received signal level of −55 dBm, which resulted in no loss of images.
The state of American politics would be improved, many argue, if more moderate and qualified people served in government. We investigate what draws such individuals to run, focusing on a dimension of politics that has received scant attention within the candidate-entry literature—the ability of candidates, once elected, to exercise meaningful influence over policy. In a conjoint experiment, we find that the opportunity to wield greater authority differentially increases moderates’ interest in seeking office, and that more qualified people express more interest in running for offices with greater authority, lower thresholds for passing legislation, and higher staff support. These findings have implications for political representation, government effectiveness, and the relationship between institutional reform and mass politics.
High-functioning depression (HFD) describes individuals experiencing persistent depressive symptoms, such as low mood and emotional exhaustion, while maintaining outward success. Owing to preserved functionality, the underlying distress is often unnoticed, misattributed or suppressed. HFD challenges existing psychiatric frameworks, delays diagnosis and increases the risk of progression to major depressive disorder and suicidality. Current screening tools may lack sensitivity, and stigma can lead to disengagement from therapy. Expanded diagnostic awareness, improved clinician training and culturally attuned care are essential for recognising and validating internal suffering in this overlooked population.
Our group has previously characterised a post-violet infrared stimulated luminescence (pVIRSL) signal and developed a post-violet infrared single-aliquot regenerative-dose (pVIR-SAR) protocol for estimation of paleodoses. The protocol provides an opportunity for measuring polymineral samples as violet stimulation prior to IRSL measurement, bleaches natural luminescence signal of quartz, and makes it possible to probe photo-transferred charges in feldspar through IR stimulation. This study presents the results of the pVIR-SAR protocol on natural polymineral fine- (4–11 μm) and coarse-grain (90–150 μm) samples, including volcanic ash, pottery, and fluvial deposits from varied geological provenances. The results show that pVIR-SAR ages of both these fine- and coarse-grain samples are consistent with geological reasoning and available age controls thereby suggest that with the use of the pVIR-SAR protocol, mineral separation can be dispensed. This study also reports on the bleachability, athermal fading rates, and alpha efficiencies of pVIRSL for these samples and corresponding results are compared with IRSL at 50°C and post-IR IRSL (pIRIRSL) at 290°C. The pVIRSL signal has a better bleachability and reproducibility compared to the pIRIRSL signal. For the fluvial deposits dated in this study, the fine-grain samples provide ages consistent with the expected chronology.
The discovery of Priscian’s Institutiones Grammaticae brought a new perspective to the grammatical analysis of the eighth and ninth centuries, as it heavily relied on the commentaries on Donatus’s Ars Minor and Ars Maior, and many scholars of the time were not entirely aware of Priscian’s contribution to the scholarly discussion within the didactical framework. Entwining Priscian’s interest in metalanguage and definitions into their studies, scholars brought the methods of dialectics into the study of grammar. As such, we refer to a few relevant figures within the medieval framework who played a relevant role. Between the eighth and ninth centuries, scholars such as Alcuin of York started to determine a theory of definitions rooted in dialectics by observing and commenting on the use of definitions in Donatus and Priscian. This is also the case of the glosses and lexica written in the Middle Ages that shed light both on the need for definitions and on the relationship between Latin metalinguistic definitions and Germanic languages. Among the works concerned with metalanguage, the glosses from St. Gall hold a special place. The teaching methods used in the Abbey of St. Gall survive in the translations and commentaries of the monk, scholar, and teacher Notker Labeo, whose didactic purpose is evident in his work.
This study assessed the suitability of nutritional composition data from a commercial dataset for policy evaluation in Brazil.
Design:
We compared the proportions of packaged foods and beverages, classified according to the Nova food classification and the nutritional composition of matched products using data from a commercial database of food labels (Mintel-Global New Products Database (GNPD)) and the Brazilian Food Labels Database (BFLD), collected in 2017 as a ‘gold standard.’ We evaluated the agreement between the two datasets using paired t tests, Wilcoxon–Mann-Whitney test and the Intraclass Correlation Coefficient (ICC) for energy, carbohydrates, total sugars, proteins, total fats, saturated fats, trans-fats, sodium and fiber.
Setting:
Brazil.
Participants:
Totally, 11 434 packaged foods and beverages collected in 2017 provided by BFLD and 67 042 packaged foods and beverages launched from 2001 to 2017 provided by Mintel-GNPD.
Results:
The proportions of ultra-processed foods (UPF) were similar in both datasets. Paired products exhibited an excellent correlation (ICC > 0·80), with no statistically significant difference in the mean values (P ≥ 0·05) of most nutrients analysed. Discrepancies in fibre and fat content were noted in some UPF subcategories, including sweet biscuits, ice cream, candies, dairy beverages, sauces and condiments.
Conclusion:
The Mintel-GNPD dataset closely aligns with the BFLD in UPF distribution and shows a similar nutritional composition to a sample of matched foods available for purchase in stores, indicating its potential contribution to monitoring and evaluating food labelling policies in Brazil and in studies of food and beverages composition in food retail through the verification of policy compliance.
This study presents a comparative analysis of the radiocarbon dates obtained on paired samples of various organic materials extracted from a lake sediment core. AMS radiocarbon dating of bulk sediment, chironomid capsules, and Trapa seeds was conducted to assess whether systematic offsets exist in the dates obtained on material that are commonly used to develop chronological frameworks for lake-based paleoenvironmental research. The findings reveal significant discrepancies between 14C dates obtained on bulk sediment, chironomid capsules, and on the Trapa seeds used to develop a previously published age-depth model for a sediment core recovered from Deoria Tal, Garhwal Himalaya, India. The systematic offset between the bulk sediment, and to a lesser extent chironomid remains, and the Trapa seeds is attributed to the integration of allochthonous carbon in the bulk sediment, leading to older apparent ages. The 3.6‰ shift in the δ13C value of the bulk sediment at 252 cm is inferred to reflect an increase in the contribution of C4 plant matter to the lake. The increase in enriched δ13C organic matter, coincident with the increasing offset between the dates obtained on bulk sediment and chironomids, and those obtained on the Trapa seeds, between 800 and 400 cal BP, was likely driven by anthropogenic land use changes, as evidenced by the four-fold increase in Cerealia-type pollen during this interval. This study underscores the necessity of selecting appropriate materials for radiocarbon dating to ensure accurate chronological reconstruction and highlights the potential of using chironomids remains to develop robust radiocarbon chronologies for lake sediment records.
Since 2017, the world has been talking about the Uyghur people as a “Chinese minority” suffering mass violence at the hands of the Chinese government, which researchers and some countries describe as genocide. While China refutes these accusations and refers to them as “internal affairs,” both China and the rest of the world present the Uyghurs as an “ethnic minority,” thus deliberately denying the Sino-Uyghur colonial relationship that has lasted since the military invasion of East Turkestan in late 1949 by the People’s Liberation Army with the full support of Stalin. As an indigenous people under settler colonialism, the Uyghurs reject this categorization as a “minority,” which contributes to the eradication of their national identity and indigenous sovereignty.
This paper contributes to the literature on augmented wealth (the sum of public pension entitlements and net wealth) along three dimensions. First, it provides new country-specific estimates of augmented wealth for Austria in the year 2017 by combining data from the HFCS (Household Finance and Consumption Survey) and the social security registry. Second, it shows that the main results, which are based on statistical matching, are surprisingly similar to estimates that utilize direct survey responses or information on work history. This finding suggests that international comparisons might be possible even if the results are based on different methodologies. Third, the paper also contrasts the size and distribution of augmented wealth for Austria with comparable estimates for other countries. The household averages of the present value of pension entitlements and of private net wealth turn out to be similar (both amounting to around € 250,000), which is in line with the results for other countries like Switzerland, Germany, and the US. Also, the reduction in the Gini coefficient due to the inclusion of pension entitlements (a decrease from 0.73 to 0.53) is similar for Austria in comparison to other countries.
Dextro-transposition of the great arteries is a critical CHD traditionally considered sporadic, with low familial recurrence. Emerging evidence suggests a genetic component in select cases, particularly with rare familial clustering. We report concordant d-TGA in monochorionic diamniotic twins, a highly unusual occurrence, strengthening the argument for a heritable predisposition.
Quantifying marine reservoir effects (MREs) across time and space is crucial for establishing accurate archaeological chronologies, including the activities of past hominines. Although the northern Iberian Peninsula shows a high density of Upper Paleolithic sites and marine shells are frequently found in these assemblages, quantification of MREs in this coastal region remains limited. We performed Bayesian modeling of radiocarbon measurements from both terrestrial (Capra pyrenaica, Cervus elaphus and other herbivores unidentified at species level) and marine (Littorina littorea Linnaeus, 1758 and Patella vulgata Linnaeus, 1758 taxa) archaeological samples recovered from the Tito Bustillo cave (Asturias, Spain) in order to determine the ΔR values for northern Iberia during the Lower Magdalenian period (ca. 20–17 ka cal BP). For the time span between 18.6 and 18.2 ka cal BP we estimated ΔR values of –298±44 14C yr and –495±122 14C yr for the periwinkle L. littorea and the common limpet P. vulgata, respectively. This finding has significant implications for future archaeological research in the northern Iberian Peninsula, as researchers must apply distinct ΔR values depending on the mollusk species selected for radiocarbon dating. Furthermore, the consistency between our calculated ΔR value for P. vulgata and previously recorded data for the same taxon from a neighboring coastal region (Cantabria, Spain) suggests remarkable stability in the marine environment of this area during the Lower Magdalenian period.
A growing interest in informal institutions in the judiciary – Scarce empirical studies focusing on informal institutions in judicial decision-making – An in-depth case study of the Polish Constitutional Tribunal (2012-2016) through an interview methodology – Constitutional Courts develop informal institutions often determinative of case outcomes – Polarisation negatively impacting compliance with preexisting informal institutions
This article brings to the debate on constitutional identity a category borrowed by feminist thought: patriarchy. Generally considered as a pre-existing identity, flushed out by a modern/progressive constitutional identity, this paper claims that patriarchy can be indirectly perpetuated by certain constitutional provisions if not differently interpreted. By focusing on the issue of the exclusion of women from the priesthood in some majoritarian religions spread in Europe, the paper observes that an effective impossibility of challenging this exclusion in front of a judge, due to the operation of the constitutional principle of religious freedom, creates a growing conflict with another constitutional principle: that of gender equality. The paper notes that this inner conflict between two core constitutional principles, both crucial to the Western constitutional identity, is overlooked by constitutional research and invites constitutionalists to self-reflect on the historical limits of the constitutions that were created by men, in states that often coalesced with religious institutions to assert patriarchy. The paper claims that the constitutional indifference toward the religious gap is no longer constitutionally sustainable in a context in which the EU says that there is no democracy without gender equality. The principle of religious freedom needs to be re-interpreted to readdress a historical injustice suffered by women in the long patriarchal process that excluded them from the sacred. Without imposing upon religion institutions by dictating their faith, the paper suggests some practical measures that can remedy the patriarchal harms suffered by women after they lost access to the altar.
The interaction between cavitation bubbles and particles near rigid boundaries plays a crucial role in applications from surface cleaning to cavitation erosion. We present a combined experimental, numerical and theoretical investigation of how boundary layer flows affect particle motion during the growth and collapse of the cavitation bubble. Using laser-induced cavitation bubbles and particles of varying radius ratios and stand-off distances, we observe that increasing the bubble-to-particle size ratio suppresses particle displacement. Through one-way coupled simulations and theoretical modelling, we demonstrate that this suppression arises from a shift in the dominant forces acting on the particle: for small radius ratios, the pressure gradient force governs particle motion, while for large ratios, the interplay between added mass, lubrication, and pressure gradient forces becomes significant due to boundary layer growth in the bubble-induced stagnation flow. Based on a theoretical framework combining potential flow theory and axisymmetric viscous stagnation flow analysis, we identify the inviscid- and viscous-flow dominated regimes characterised by the combination of the stand-off distance, the bubble-to-particle radius ratio, and the bubble Reynolds number. Finally, we derive scaling laws for particle displacement consistent with experiments and simulations. These findings advance our understanding of unsteady boundary layer effects in cavitation bubble-particle interactions, offering new insights for applications in microparticle manipulation and flow measurements.