Designing and developing smart antennas with adaptive radiation characteristics is an integral part for present-day communication systems. The versatile capabilities of Time-modulated fourth-dimensional (4D) antenna arrays can provide that crucial adaptability if properly designed. This work discusses an effective analysis of 4D antenna arrays to achieve less-attenuating radiation patterns with simultaneously suppressed sidelobe and sidebands. The 4D arrays offer an additional benefit over standard arrays in the sense that the requisite amplitude tapering to lower the undesired radiations can be accomplished by controlling only the switch ON times of the radiating elements instead of using attenuators. The idea of splitting pulses by keeping the total switch ON durations constant, is exploited here as an additional degree of freedom for beamforming of all the radiation patterns. The unwanted radiations in terms of sidelobes as well as sideband radiations (SRs) at the fundamental and harmonic frequencies, respectively are simultaneously minimized to improve the radiation efficiencies of the 4D array. To address the conflicting aims for the synthesis of radiation patterns, a wavelet-mutation based heuristic method is also proposed. The multi-objective problem in hand is modulated in to a single objective cost function as minimization problem. The proposed outcomes are reported and compared with other state of the art works related to the same domain. Furthermore, a detailed statistical analysis is also provided to identify the strengths and weaknesses of the proposed approach.

The history of the laws of war is an increasingly popular research field of international law. Claire Vergerio’s book War, States, and International Order: Alberico Gentili and the Foundational Myth of the Laws of War is a good-read in this regard. It provides a critical analysis of how 19th-century international lawyers misread and reinterpreted the writings of the 16th-century Italian jurist Alberico Gentili to establish the modern sovereign state as the sole legitimate subject of the laws of war. In this review essay, I offer a critical reading of War, States and International Order, positioning its intervention in the context of broader scholarly debates.

Here, we explore variation in a new record of archaeological house-floor sizes from the southwestern United States relative to spatially explicit time series estimates of local precipitation. Our results show that inequality becomes more severe during periods of high precipitation. This supports the theory suggesting that inequality may emerge where resources are dense, predictable, and clumped within heterogenous and circumscribed environments. Our findings indicate that wealth inequality may emerge among populations with similar subsistence adaptations as a result of local socioenvironmental variation.

This study reconstructs the numerological considerations behind a Judeo-Greek innovation in religious terminology, with a focus on its key element—Hellenization of the Hebrew name of God. It demonstrates that the Greek nomen sacrum can also be interpreted as a sacred number, a fact that directly infuses the otherwise broad term κύριος with numinosity. This observation carries multiple implications for understanding the phenomena of nomina sacra and “names-numbers” as well as other related topics, such as the emergence of Greek and Hebrew alphabetic numerals, early Jewish and Christian numeric symbolism, and early binitarian theology.

Polyploidization is known to cause changes in the ploidy levels of plant somatic cells that affect the morphological, physiological and chemical composition. The aim of this research was to investigate the effects of tetraploidization in olive. To do this, several characteristics of 1-year-old shoots of two olive genotypes were compared: the diploid cultivar Leccino (L), and its tetraploid mutant Leccino Compact (LC), considered a slow-growing genotype. LC differed significantly from L in the morphological characteristics, with higher values of diameter, dry mass and volume of the stem (46%, 103%, 102%, respectively), and higher area, mass and volume of the individual leaf (43%, 66%, 73%, respectively). LC also had thicker, longer and wider leaves (30%, 10%, 34%, respectively) and significantly lower leaf density (7%) and lower specific leaf area, leaf mass ratio and leaf area ratio (17%, 4%, 18%, respectively). Internode length and stem density were not significantly different. The results allowed us to thoroughly characterize the effects of tetraploidy on 1-year-old shoots in olive, and also suggest that the slow growth of LC is due to its lower leaf area per unit of total biomass, which reduces leaf area production and, consequently, light interception, resource availability and tree growth. These results will be useful for genetic improvement programmes and for planning further exploitation of tetraploidy in horticulture.

This research reconstructs the business dynamics behind the evolution of the European mutual fund industry, which led Luxembourg to become its main international gateway since the 1960s. We analyze this local industry to understand how political and financial élites influence the economic specialization of small states. We argue that a closely-knit community of local professionals and politicians, well-versed in corporate and European legislation, leveraged the Grand Duchy’s small state status within the nascent European Community to become a financial hub specializing in mutual funds within an emerging network of international financial centers. This position was achieved through bifurcation of sovereignty strategies on the basis of two main premises. First, on the systematic acceptance of conflicts of interest within local financial and political leadership, comprising overlapping roles, revolving-doors, and familial ties in business relationships. Second, on regulatory engineering practices, such as the dynamic interpretation of laws, and the strategic planning of directive assimilation to advance Luxembourg’s interests as opposed to its EU counterparts. The analysis uses archival material from nine archival collections and oral history interviews.

A quadrotor unmanned aerial vehicle (UAV) must achieve desired flight missions despite internal uncertainties and external disturbances. This paper proposes an adaptive trajectory tracking control method that attenuates unknown uncertainties and disturbances. Although the quadrotor is underactuated, a fully actuated controller is designed using backstepping control. To avoid repeated derivatives of control inputs, a dynamic surface method introduces a filter and auxiliary controller. Lyapunov criteria guide adaptive laws for tuning controller gain and filters. A low-power observer is integrated for state estimation. Additionally, a disturbance observer is developed and combined with the control scheme to handle unknown disturbances. Simulations on a DJI F450 quadrotor demonstrate that the proposed control algorithm offers strong trajectory-tracking performance and system stability under multiple uncertainties and external disturbances during flight.

Many views of moral agency include, implicitly or explicitly, a consciousness requirement—namely, the claim that phenomenal consciousness is a necessary condition of moral agency. This paper casts doubt on the consciousness requirement. I argue that consciousness is not necessary for instantiating four key capacities necessary for moral agency: action, moral concept possession, responsiveness to moral reasons, and moral understanding. I defend my picture of nonconscious moral agency as a plausible account of an entity that can act for moral reasons and can be morally responsible. Lastly, I discuss broader implications of my argument, especially on the possibility of artificial moral agency.

The development of childcare policy can be understood as a process shaped by conflicts across multiple, interconnected dimensions of policymaking. Whilst existing literature often emphasises tensions between established policy legacies and emerging paradigms such as work–family reconciliation and social investment, this study introduces a multi-dimensional framework that includes conflict and negotiation processes between competing policies co-existing within the policy domain but also within policies themselves, emphasising the dynamics of self-reinforcing and self-undermining feedbacks. Our analysis reveals how efforts to resolve tensions in one policy dimension can inadvertently trigger new conflicts in other dimensions. By examining the South Korean case over three decades, we demonstrate how such interwoven tensions drive long-term policy change, offering scholars a more nuanced understanding of the complex mechanisms underlying policy evolution.