We study density properties of orbits for a hypercyclic operator T on a separable Banach space X, and show that exactly one of the following four cases holds: (1) every vector in X is asymptotic to zero with density one; (2) generic vectors in X are distributionally irregular of type $1$; (3) generic vectors in X are distributionally irregular of type $2\frac {1}{2}$ and no hypercyclic vector is distributionally irregular of type $1$; (4) every hypercyclic vector in X is divergent to infinity with density one. We also present some examples concerned with weighted backward shifts on $\ell ^p$ to show that all the above four cases can occur. Furthermore, we show that similar results hold for $C_0$-semigroups.

This paper studies the dynamic extraction problem of an exhaustible common-pool resource. We build on classical closed-economy growth models with intertemporally maximizing, infinitely lived dynasties exhibiting a constant population growth rate. Utility is obtained from periodic consumption based on the fixed-rate capital and the extraction of the resource, and from the amenity values derived from the standing resource stock. The resource contributes to both consumptive and amenity utilities, while different generations are interconnected by intergenerational altruism. Dynamic allocation of the natural resource is determined by a benevolent social planner. This allows us to examine intra-generational inequity issues in combination with the intergenerational concerns. We demonstrate how the optimal allocation of the resource depends on the population growth, wealth level, inequality, ecological vulnerability of the resource and rivalry on the amenity value. Our results highlight the trade-offs between reducing the degree of inequality and preserving the ecological values of the resource.

Previous studies have reported comorbidities of autoimmune thyroid disorders (AITD), including Hashimoto’s disease (HT) and Graves’ disease (GD), and celiac disease (CeD), as well as the possible beneficial effects of a gluten-free diet (GFD) on AITD. Nonetheless, it remains uncertain whether there is a genetic causal relationship between AITD and CeD, while the beneficial effects on a GFD are controversial. This study aim to explore the causal relationship between CeD and AITD, particularly with HT, and to determine whether a GFD is beneficial for AITD. We performed a two-sample Mendelian Randomization (MR) analysis on data from the largest meta-analysis summary statistics of AITD, CeD and GFD. Genetic instrumental variables were established by pinpointing single nucleotide polymorphisms (SNPs) that relate to corresponding factors. In assessing sensitivity and heterogeneity, we conducted examinations of MR Egger, weighted median, simple mode, weighted mode, and MR Egger intercept tests. HT was found to play a pathogenic role in increasing the risk of CeD (ORIVW = 1.544 [95%CI 1.153-2.068], p = 0.00355), and our Mendelian randomization study does not support genetic liability related to CeD with GD (Graves’ disease) and GFD with AITD. This study supports the positive correlation between HT risk and CeD risk, while GFD has no protective effect on AITD and may exert its effect through other mechanisms. These findings provide valuable insights into potential targets for disease intervention and treatment at the genetic level.

During the Cold War, various political forces sought to shape the mindset of the Chinese diaspora. One understudied cultural influence that played an important role in reaching overseas Chinese was Chinese Christian literature. Focusing on Dengta (Lighthouse, 1956–1967), the first Chinese Christian magazine aimed at non-Christian communities in the diaspora, this study examines how the magazine developed an evangelical discourse that engaged with the cultural and spiritual identities of the Chinese diaspora amid political and ideological conflicts. Published in Hong Kong, which emerged as a hub for Chinese Christian literature in the post-war period, the magazine reflects a pivotal shift in Chinese Christian publishing: the start of a global movement aimed at evangelizing overseas Chinese. To appeal to the diaspora, Dengta adopted an ethnic and cultural rhetoric of Chineseness and presented Christian ideals in a context that resonated with the experiences of the Chinese diaspora. I argue that the Chineseness promoted by Dengta helped construct a transregional and transnational sense of belonging for overseas Chinese by framing a blend of traditional Chinese culture and modern knowledge within a Christian cosmic worldview. This study foregrounds the evangelical efforts of Christian literary workers to shape the diasporic experience amid the political tensions of the Cold War.

This article critically examines the relationship between self-esteem and criminal social identity in violent offenders, offering a novel rehabilitative framework within the Indian penal system. Despite global recognition of identity reformation as integral to offender rehabilitation, India has yet to integrate these psychological dimensions into correctional strategies. This research, conducted at Sabarmati Central Prison, Ahmedabad, applies structured therapeutic interventions to assess shifts in self-esteem and criminal social identity among 70 violent offenders, measured pre- and post-intervention. Criminal social identity reflects the internalization of criminality as a defining role, while self-esteem denotes an individual’s perceived legitimacy within social norms. The findings underscore the formative influence of environmental, familial and sociocultural factors, revealing a significant interplay between self-concept and criminal behaviour. Statistically significant improvements post-intervention demonstrate the potential for identity reconstruction as a rehabilitative tool. This analysis challenges punitive correctional models, advocating for evidence-based, human-centred interventions that prioritize psychological rehabilitation. By offering a culturally contextualized approach, this article contributes to contemporary debates on criminal justice reform, providing a blueprint for integrating psychological insights into correctional policy in India and beyond.

Understanding how to increase government revenue via taxation is a core puzzle in state development. Taxation is critical for states to fund public goods, and may have positive spillover effects on citizen-state relations. We argue that tax compliance will be higher when governments employ community-level, rather than individual-level, interventions. To test whether it is more effective to focus such interventions on top-down (TD) enforcement or bottom-up (BU) quasi-voluntary compliance, we ran a multi-arm field experiment in 128 markets in Malawi. We find that the BU intervention significantly increased tax compliance by 40%. The TD intervention had a less robust effect on compliance, although not significantly different from that in the BU group. The BU intervention, but not the TD, also increased trust in government, satisfaction with services, and political engagement. The results show that community-level tax interventions can increase compliance and that quasi-voluntary approaches can positively reshape citizen-state relations.

Identifying use-related residues from stone artefacts has become increasingly important in determining starchy plant exploitation over time and in different locales. Standard methods for processing residues samples are widely available but there is no clear consensus on suitable methods for attributing unknown starch grains to known plant taxa. We revisit the case study of a flaked stone artefact (K/76/S29B) recovered from Phase 1 (c. 10,000 ka) at Kuk Swamp in Papua New Guinea (PNG). Starch grains from taro (Colocasia esculenta) were identified in the residue extraction, but there were other grains that could not be attributed a plant origin at that time. The new analysis applied robust statistical methods, categorial attributes and expert input. In addition to C. esculenta, kudzu bean (Pueraria montana var. lobata) was identified, representing the earliest use of kudzu bean in the PNG highlands. Importantly, we also determined that starch grains from C. esculenta and Dioscorea esculenta are morphologically indistinguishable. We turned to other attributes of potential contributing plant taxa in determining distinguishing features: habit/growing requirements; the sedimentary context of the archaeological find; and environmental settings. Cultural use of both plants, artefacts and artefact technologies can be critical elements in confident identification outcomes, as exemplified here.

The Cold War is often depicted in binary terms: communists against anti-communists, the left against the right, or the free world versus the communist world. However, during the latter part of the Cold War, particularly following the 1979 war between China and Vietnam, earlier Cold War binaries no longer applied, and new alliances were established. These alliances often brought people with the same enemies together, despite having little in common ideologically. This article examines the historical circumstances and Cold War geographies of ethnic Khmu anti-Lao PDR and anti-Vietnamese insurgents, including their alliances with right-wing governments in Thailand and the communist People’s Republic of China (PRC). As neutralists, these Khmu occupied a political space rarely discussed in relation to the Cold War. Although the PRC provided training, weapons, and supplies to the neutralist Khmu between 1979 and 1983, later their political leader, General Kong Le, had a falling out with the Chinese, and the PRC stopped supporting his largely ethnic minority soldiers. However, up until 1989, the Thai government continued to allow the Khmu to maintain bases in Thailand for launching military operations inside Laos, until the Thai government adopted the “Battlefield to Marketplace” policy. Some Khmu continued resisting inside northwestern Laos during the early 1990s, but with declining numbers of soldiers and decreased outside support, armed resistance ended in 2003. It is critical that the geographies and alliances of the later Cold War be differentiated from those of the earlier years of the Cold War. This transnational insurgency deserves attention.

Miocene lacustrine clay deposits formed in the Şile region of Türkiye rest unconformably on Cretaceous andesite, basaltic andesite, basalts and rare dacites. Factors controlling the genesis of this sequence include: (1) sediment provenance, (2) tectonic uplift and climatic regimes during syn- and post-depositional times, (3) burial diagenesis and (4) changes from surface weathering alterations (i.e. oxidation and hydrolysis reactions) in the critical zone. Clay minerals are dominated by kaolinite and illite, with their relative abundances varying in relation to the proximity of coal seams, stratigraphic sequence and in an overlying sand-rich fluvial deposit. Variations in the mineral abundances reveals cyclothem-like sequences with patterns of fining upwards (i.e. increasing clay mineral abundance) capped by thin coal seams. The Clay Mineral Alteration Index values for the Şile clay sequence indicate a slight trend of decreasing chemical weathering intensity up-section, which is consistent with regional geological data for terrain uplifting and a drying climate during the Miocene. Critical zone processes have modified the mineral and chemical assemblages, as evidenced by the appearance of iron oxides putatively formed from recent oxidation of the ferrous minerals siderite and pyrite, which are not found in the upper sections. Taken together, the evidence indicates that the clay minerals are derived from a combination of prior weathering of basement rocks, diagenesis after deposition and modern critical-zone weathering. The degree of each process is dependent on depositional history, stratigraphic position and depth below the land surface, all under the changing influences of tectonic uplift and regional climate. The Şile deposits provide an economical clay resource that could be important to the ceramics industry of Türkiye.

To investigate the effects of activating/inhibiting AmelSmo on the olfactory genes and signalling pathways of Apis mellifera ligustica, as well as the potential regulatory mechanisms involved. Transcriptomic sequencing was performed on Apis mellifera ligustica antennae using Illumina HiSeq platform following administration of cyclopamine (inhibitor) and purmorphamine (agonist). Differential gene expression analysis, coupled with GO and KEGG pathway annotations, facilitated the identification of olfactory receptor genes. The reliability of transcriptome data was subsequently validated through quantitative real–time–polymerase chain reaction analysis. Transcriptomic analysis revealed 12,356 differentially expressed genes (DEGs) between inhibitor and control groups, with 276 genes showing significant differential expression. Similarly, 12,356 DEGs were identified between the agonist and control groups, among which 672 genes exhibited significant differential expression. The GO annotation revealed that the DEGs in the inhibitor group and the agonist group were mainly enriched in the biological process such as cellular process, metabolic process, and biological regulation; in cellular component, enrichment was mainly observed in cell, cell part, and organelle; and in molecular function, the main enrichment was in binding and catalytic activity. KEGG pathway analysis indicated that DEGs from both groups were primarily enriched in signal transduction pathways. Among the DEGs, three olfactory receptor genes were identified in the inhibitor group: odorant receptor 19, odorant receptor 22, and odorant receptor 5. The agonist group exhibited two olfactory receptor genes: odorant receptor 109 and odorant receptor 26. All these olfactory receptor genes demonstrated downregulated expression patterns. Transcriptomic sequencing analysis identified five olfactory receptor genes. The changes in gene expression levels suggest that the activation or inhibition of AmelSmo may regulate the expression of olfactory receptors via the Hedgehog signalling pathway. It is speculated that AmelSmo may play a regulatory role in the olfactory system of bees.

All orthodox believers accept that ‘God’s ways are not our ways’ and that ‘the peace of God passes all understanding’. The sceptical theist tries to apply these principles to the mystery of evil in the world, by arguing that we cannot tell what the divine purpose might be in the sufferings that we cannot explain. There is a danger that an undisciplined putting of evil into the fog of mystery might free our understanding too much from rational constraint. I argue that by combining sceptical theism with the way that Peter van Inwagen deploys the fact of our fallen nature to explain Divine withdrawal, we can give a rational account of the limitations there are on how we can judge God’s justice.

This paper presents the design and dynamic analysis of a reconfigurable four-wheeled mobile robot, with front wheels capable of transforming from a conventional circular wheel into a five-spoke wheel-legged (wheg) configuration. The transformation is achieved through a reconfiguration mechanism integrating a slider-crank chain with a rack and pinion system. A comprehensive dynamic analysis of the mechanism is conducted to evaluate the torque requirements for actuation and to support the selection of a suitable off-the-shelf motor. The required actuation torque is primarily influenced by the normal contact (reaction) force between the wheel and the ground or terrain, which varies depending on surface or terrain conditions. This contact force is computed using system dynamics, and its variations are further analyzed through the robot’s dynamic response. Numerical simulations, supported by real-world field tests, validate the effectiveness of the proposed design in moderately uneven environments.

Cross-gender behaviour gradually entered the spheres of aetiology and diagnosis during the eighteenth century with reference to scattered instances of male cross-dressing. But well into the nineteenth century, “gender identity” (a mid-twentieth-century term) remained a poorly theorised instance of medicalisation. Late eighteenth-century concepts of “dynamic hermaphroditism” accounted for gender-nonconforming behaviours and aspirations, but could not account for the observed heterogeneity in disparities between sexed body and mind. Increasingly substantive contributions to aetiology were seen during the late 1870s and 1880s, particularly in response to Carl Westphal’s convoluted, 1869 concept of “contrary sexual feeling” (conträre Sexualempfindung). Richard von Krafft-Ebing’s notion of metamorphosis sexualis paranoica provided one of the most authoritative approaches to the question of gender identification in “sexual inversion”. The notion, which took the first seven German editions of his Psychopathis sexualis to achieve a definitive formulation, needs to be seen in light of Krafft-Ebing’s earlier conceptions of sexual delusion, which straddled the realms of the experienced sexual body and sense of self. Moreover, Krafft-Ebing was not the first to outline a theory of non-cisgender identity, as demonstrated by the mid-1880s work of Théodule-Armand Ribot and Rudolph Arndt, as well as various significantly earlier approaches to what had been considered the “monomania of sexual transformation”.