Evolution Of System Research Articles

Effect of the charge asymmetry and orbital angular momentum in the entrance channel on the hindrance to complete fusion

The hindrance to complete fusion is studied as a function of the charge asymmetry of colliding nuclei and orbital angular momentum of the collision. The formation and evolution of a dinuclear system (DNS) in the heavy-ion collisions at energies near the Coulomb barrier is calculated in the framework of the DNS model. The DNS evolution is considered as nucleon transfer between its fragments. The results prove that a hindrance at formation of a compound nucleus (CN) is related with the quasifission process, which is breakup of the DNS into products instead to reach the equilibrated state of the CN. The role of the angular momentum in the charge (mass) distribution of the reaction products for the given mass asymmetry of the colliding nuclei has been demonstrated. The results of this work have been compared with the measured data for the quasifission yields in the C12+Pb204 and Ca48+Er168 reactions to show the role of the mass asymmetry of the entrance channel. Published by the American Physical Society 2024

The Evolution of Simplifying Heuristics in Visual Cognition: Categorization, Specialization, and Visual Illusions.

Animals live in visually complex environments. As a result, visual systems have evolved mechanisms that simplify visual processing and allow animals to focus on the information that is most relevant to adaptive decision making. This review explores two key mechanisms that animals use to efficiently process visual information: categorization and specialization. Categorization occurs when an animal's perceptual system sorts continuously varying stimuli into a set of discrete categories. Specialization occurs when particular classes of stimuli are processed using distinct cognitive operations that are not used for other classes of stimuli. We also describe a nonadaptive consequence of simplifying heuristics: visual illusions, where visual perception consistently misleads the viewer about the state of the external world or objects within it. We take an explicitly comparative approach by exploring similarities and differences in visual cognition across human and nonhuman taxa. Considering areas of convergence and divergence across taxa provides insight into the evolution and function of visual systems and associated perceptual strategies.

The Evolution and Impact of Online Payment Systems on E-commerce

Digital Transactions - Investigating the Advancement and Affect of Online Installment Frameworks in E-commerce The appearance of computerized exchanges has revolutionized the scene of e-commerce, changing the way businesses and buyers lock in budgetary exchanges. This ponders digs into the advancement and affect of online installment frameworks on e-commerce, pointing to get it the key mechanical progressions, appropriation patterns, and the coming about suggestions for businesses and customers. The investigation utilizes a mixed-methods approach, combining subjective examination of chronicled information on online installment frameworks with quantitative examination of buyer selection rates and inclinations. Key variables such as security measures, comfort highlights, integration with e-commerce stages, and administrative systems are investigated to illustrate their part in forming the advancement of online installment frameworks. Discoveries uncover a critical advancement in online installment frameworks, from conventional strategies like credit/debit cards to more up-to-date advances such as versatile wallets, advanced monetary standards, and peer-to-peer installment stages. The think about moreover reveals the affect of these headways on customer behavior, highlighting expanded belief, comfort, and speed of exchange as key drivers of selection. In addition, the study looks at the suggestions of online installment frameworks on e-commerce businesses, counting diminished cart surrender rates, improved client encounters, and extended advertise reach. Challenges such as cybersecurity dangers, installment preparing expenses, and administrative compliance are too talked about within the setting of their affect on e-commerce operations. The suggestions of these discoveries extend to e-commerce businesses, monetary teaching, policymakers, and customers. Techniques for optimizing online installment frameworks to meet advancing shopper desires, upgrade exchange security, and cultivate advanced inclusivity are proposed. Moreover, future research headings are proposed to dig deeper into developing innovations and regulatory systems forming the long-term of advanced exchanges in e-commerce.

Entanglement in photo-ionization process.

We report a study of the entanglement between the quantized photon field and an atom arising in the photo-ionization process. Our approach is based on an ab initio solution of the time-dependent Schrödinger equation (TDSE) describing the quantum evolution of a bipartite system consisting of the atom and the quantized electromagnetic field. Using the solution of the TDSE, we calculate the reduced photon density matrix, which we subsequently use to compute entanglement entropy. We explain some properties of the entanglement entropy and propose an approximate formula for the entanglement entropy based on the analysis of the density matrix and its eigenvalues. We present the results of a comparative study of the entanglement in the photo-ionization process for various ionization regimes, including the tunneling and the multiphoton ionization regimes.

The role of satellite DNAs in the chromosomal rearrangements and the evolution of the rare XY1Y2 sex system in Harttia (Siluriformes: Loricariidae).

The underlying processes behind the formation, evolution, and long-term maintenance of multiple sex chromosomes have been largely neglected. Among vertebrates, fishes represent the group with the highest diversity of multiple sex chromosome systems and, with six instances, the Neotropical fish genus Harttia stands out by presenting the most remarkable diversity. However, although the origin mechanism of their sex chromosome systems is well discussed, little is known about the importance of some repetitive DNA classes in the differentiation of multiple systems. In this work, by employing a combination of cytogenetic and genomic procedures, we evaluated the satellite DNA composition of H. carvalhoi with a focus on their role in the evolution, structure, and differentiation process of the rare XY1Y2 multiple sex chromosome system. The genome of H. carvalhoi contains a total of 28 satellite DNA families, with the A+T content ranging between 38,1 and 68,1% and the predominant presence of long satellites. The in situ hybridization experiments detected 15 satellite DNAs with positive hybridization signals mainly on centromeric and pericentromeric regions of almost all chromosomes or clustered on a few pairs. Five of them presented clusters on X, Y1, and/or Y2 sex chromosomes which were therefore selected for comparative hybridization in the other three congeneric species. We found several conserved satellites accumulated on sex chromosomes and also in regions that were involved in chromosomal rearrangements. Our results provide a new contribution of satellitome studies in multiple sex chromosome systems in fishes and represent the first satellitome study for a Siluriformes species.

ARTIFICIAL INTELLIGENCE BASED RECOMMENDER SYSTEMS

Recommender systems anticipate customers' present preferences for certain items based on their past behavior, offering individualized service support to users. The evolution of recommender systems has naturally included artificial intelligence (AI), notably computational intelligence and machine learning techniques and algorithms to enhance prediction precision and resolve issues with cold start and data sparsity. This paper methodically examines the fundamental approaches and current practices in recommender systems.

Modelling a foreland fold-and-thrust petroleum system: a Permian example in the NW Sichuan Basin, Southwest China

ABSTRACT Foreland thrust belts are globally significant areas for oil and gas exploration. These belts undergo unique tectonic activity, resulting in distinct variations in the accumulation of oil and gas. Studying the genetic evolution of deep oil and gas in these thrust belts is a crucial means of revealing the patterns of deep oil and gas accumulation. This study utilized a novel approach that combines reservoir geochemistry and basin simulation to determine the migration process of oil and gas in the foreland thrust fault belt of northwestern Sichuan Province. To achieve this goal, we established a thermal evolution model of lower Palaeozoic source rocks through organic chemical analysis. The balanced profile technique was used to determine the paleotectonic evolution pattern of the critical period in this area. Additionally, the mixed flow migration algorithm was employed to simulate the evolution of the Palaeozoic petroleum system. Through basin petroleum system modelling (BPSM), it was discovered that the bitumen found in the thrust nappe belt originated from the lower Cambrian strata. Furthermore, the gas reservoir in the hidden fault belt primarily migrated from the lower Cambrian strata and was also partially mixed with thermogenic gas from Permian source rocks. After establishing the genetic models of various tectonic belts in the study area, it became clear that there are notable differences in hydrocarbon accumulation within these belts. The BPSM results revealed that the oil present in the thrust nappe belt was generated in Lower Cambrian source rocks through early Indosinian hydrocarbon expulsion and continuous charging. The gas found in the thrust nappe belt was produced through the process of oil cracking in the deep reservoir located in the hidden front belt during the late Indosinian. The depth of the thrust nappe belt has helped to preserve hydrocarbon reservoirs. The natural gas present in the hidden fault belt primarily originates from lower Cambrian source rocks, which are combined with gas generated by oil cracking in lower Permian source rocks after the Yanshanian. Therefore, hydrocarbons accumulate deeply in the footwall of the thrust fault belt. The BPSM offers a fresh approach to hydrocarbon genetic models of thrust fault zones in the western Sichuan Basin, and it is beneficial for accurately evaluating the potential for deep hydrocarbon resources in comparable geological settings.

Melt inclusions in zircon: a window to understanding the structure and evolution of the magmatic system beneath the Laguna del Maule volcanic field

Melt inclusions in zircon: a window to understanding the structure and evolution of the magmatic system beneath the Laguna del Maule volcanic field

Geochemical and petrological diversity of a transcrustal magmatic system driven by mushy magma mixing: Insights from the Triassic dike swarms in East Kunlun orogen, northern Tibetan Plateau

Geochemical and petrological diversity within transcrustal magmatic systems usually reflects the magma properties and magmatic processes and thus is critical to understanding the origin of magmatic complexes and the evolution of continental crust. Herein, we present an integrated study on the petrology, mineralogy, geochronology, geochemistry, and Sr-Nd-Hf isotopes of Triassic mafic-felsic dikes in the East Kunlun orogenic belt, northern Tibetan Plateau, to elucidate the nature and evolution of the transcrustal magmatic system. The studied dikes intruding into the granodiorite pluton (ca. 235−233 Ma) comprise coeval ca. 220−218 Ma gabbroic diorite porphyry, diorite porphyry, granodiorite porphyry, and alkali-feldspar granite, resembling composite dike swarms. The macrocrysts in these dikes show various zoning patterns, indicating episodic magma recharge and crystal resorption. The compositional gap between the intermediate-mafic dikes (SiO2 = 52.9−67.8 wt%) and the granitic dikes (SiO2 >75 wt%), as well as their homogeneous whole-rock Sr-Nd isotopes, with (87Sr/86Sr)i = 0.708387−0.710995 and εNd(t) = −5.83 to −4.34, but variable zircon Lu-Hf isotopes, i.e., εHf(t) = −7.67 to −0.36, demonstrates that magma mixing rather than cogenetic fractional crystallization accounts for their origin. In combination with thermobarometric insights, these results suggest that the mafic and felsic parental magmas originating from an enriched lithospheric mantle and ancient continental crust, respectively, were ultimately emplaced and stagnated at varying crustal depths (∼22−30 km and 8−17 km). Subsequently, the felsic magma mush was replenished and rejuvenated by the underplated mafic magma, leading to varying degrees of crystal-melt and/or melt-melt mixing. This mush-facilitated crust-mantle magma mixing is an important mechanism accounting for the compositional diversity of the transcrustal magmatic system.

The Effect of Ficus semicordata Fig Quality on the Sex Ratio of Its Pollinating Wasp Ceratosolen gravelyi

The interaction between fig wasps and their host fig trees (Ficus spp.) is a striking example of an obligate pollination mutualism. Male and female fig wasps are confined within their natal patch instead of panmictic; under this circumstance, mating only occurs between individuals of the same patch. This is known as a local mate competition (LMC). It pays foundresses to invest mainly in daughters and to only produce enough sons to ensure that all female offspring can be fertilized, but in nature, pollinating fig wasps may face many problems with host quality, such as limitation of oviposition sites and the nutrition deficiency of the host fig. The sex ratio of wasps can determine the stability of fig–fig wasp mutualistic system and, thus, the stability of other species associated with it. In this study, we controlled the quality of host figs in three ways. The results showed that the host fig age can influence the sex ratio of pollinator offspring, while the foundress numbers and the presence of pollen have no significant effect on it. A compelling explanation for this result is that the sex-dependent mortality occurs. This is a novel finding of how host quality influences the interaction of fig and fig wasps, which can also help us understand the evolution and stability mechanism of this symbiotic system.

Introducing two improved methods for approximating radiative cooling in hydrodynamical simulations of accretion discs

Introducing two improved methods for approximating radiative cooling in hydrodynamical simulations of accretion discs

ANALYSIS OF THE OUTCOMES OF IMPLEMENTING THE EXPERIMENTAL SYSTEM FOR FUTURE TRANSLATORS’ PROFESSIONAL TRAINING BASED ON LOCALIZATION

The ongoing evolution of the higher linguistic education system is primarily focused on addressing the demands of society and the government for competent translators. This necessitates corresponding modifications in the professional training, development, and personal growth of future translation personnel, with the ultimate goal of fostering their preparedness for localization. The paper aims to provide a comprehensive overview of the outcomes obtained from implementing an experimental system for teaching prospective translators in localization, as well as their subsequent analysis. Clear algorithmization is necessary for any experimental activity, including the professional training of prospective translators for localization. A linear pedagogical experiment was conducted to implement and experimentally verify the author’s pedagogical system. The experiment was designed in a series of consecutive steps. To test the hypothesis proposed in the study, it was deemed necessary to approve the structural and functional model of the experimental system. This approval was intended to establish a program of experimental work that aims to create the required pedagogical conditions in both academic and extracurricular classes. The ultimate goal is to enable students to develop themselves as individuals, both personally and professionally. The effectiveness of the presented results was demonstrated through the use of theoretical analysis of scientific literature on the research problem. This analysis facilitated the selection and comprehension of didactic material. Additionally, a critical and analytical examination of concepts, theories, and methods was conducted to identify potential solutions for the problem under investigation. Furthermore, mathematical statistics methods were employed to quantitatively calculate the obtained data. The author’s methodology of incorporating various experimental new designs into the professional training of future translators for localization is deemed effective, as evidenced by the generalized results of the preparedness of future translators for localization.

Reducing the Constrained Multibody Dynamics Problem to the Solution of a System of Ordinary Differential Equations Via Velocity Partitioning and Lie Group Integration

Abstract In multibody dynamics, formulating the equations of motion in absolute Cartesian coordinates results in a set of index-3 differential algebraic equations (DAEs). In this work, we present an approach that bypasses the DAE problem by partitioning the velocities in the system into dependent and independent coordinates, thereby reducing the task of producing the time evolution of the mechanical system to one of solving a set of ordinary differential equations (ODEs). In this approach, the independent coordinates are integrated directly, while the dependent coordinates are recovered through the kinematic constraint equations at the position and velocity levels. Notably, Lie group integration is employed to directly obtain the orientation matrix A at each time-step of the simulation. This eliminates the need to choose generalized coordinates to capture the orientation of a body, as the matrix A is a by-product of the solution algorithm. Herein, we outline the new approach and demonstrate it in conjunction with four mechanisms: a single pendulum, a double pendulum, a four-link mechanism, and a slider crank. We report on the convergence order behavior of the proposed method and compare its performance with an established method that combines coordinate partitioning with an Euler parameter formulation. The Python code developed to generate the reported results is open-source and available in a public repository for reproducibility studies.

An evolutionary game and system dynamics approach for the production and consumption of carbon-labeled products-based on a media monitoring perspective

Carbon label is acknowledged as an effective way to combat the problem of global warming. As a powerful way to encourage individuals to adjust their consumption patterns and to promote the development of green consumption, carbon-labeled products are widely developed in China. To reveal the production and consumption process of carbon-labeled products, the present study constructs a tripartite game model consisting of the government, carbon-labeled products manufacturers and consumers based on a media monitoring perspective. The evolutionary stability strategy (ESS) is firstly determined by solving the replication dynamic equations and stability analysis of the equilibrium point, followed by the strategy analysis and sensitivity analysis through numerical simulation. The results show that media supervision can effectively complement and constrain government supervision. In addition, it can promote enterprises to standardize production and enhance consumers' trust and willingness to buy carbon-labeled products. The introduction of media supervision can well realize the ideal equilibrium of "effective government supervision, enterprise compliance and consumer support for purchase".

The evolution of anomalous Hall effect in ferromagnetic Weyl semimetal Nb x Zr1-x Co2Sn

Abstract Magnetic topological semimetal can host various topological non-trivial states leading to exotic novel transport properties. Here we report the systematic magneto-transport studies on the Heusler alloy Nb x Zr1-x Co2Sn considered as a ferromagnetic(FM) Weyl semimetal. The cusp anomaly of temperature-dependent resistivity and large isotropic negative MR emerge around the FM transition consistent with the theoretical half-metallic predictions. The prominent anomalous Hall effect(AHE) has the same behavior with the applied field along various crystal directions. The Nb doping introduces more disorder resulting in the enhancement of the upturn for the temperature-dependent resistivity in low temperatures. With Nb doping, the AHE exhibits systemic evolution with the Fermi level lifted. At the doping level of x=0.25, the AHE mainly originates from the intrinsic contribution related to non-trivial topological Weyl states.

Development of political and legal ideas regarding the concept of protective democracy

The article examines the evolution of the concept of protective democracy and ways of its implementation in political and legal practice. It is emphasized that in the course of historical development, the concept of democracy as one of the oldest means of organizing political power underwent significant changes caused by the evolution of society, legal and political systems, which affected its interpretation and implementation. The ideas that arose around this concept were studied, considering them from different perspectives - from historical to modern. It is shown that the primary and consolidated ideas about protective democracy arose at the turn of the XVII-XVIII centuries, when democracy began to be considered as a means by which citizens can protect themselves from excessive state control. It is noted that in the process of formation of the concept of protective democracy, political and legal ideas about the right to vote as a tool for the implementation of government accountability played a significant role, since democratic institutions and procedures need protection from abuse of power to ensure their stability and effectiveness. It is emphasized that the right to vote, as a key element of democracy, plays a significant role in this concept, as it is the main mechanism for expressing the will of the people and establishing the accountability of the government to the citizens. It is noted that ensuring wide access to voting ensures a higher level of government legitimacy and reduces the likelihood of its authoritarian tendencies. It is shown that political and legal ideas about the right to vote played a key role in the formation of the concept of protective democracy, emphasizing the need to protect and support this fundamental right to ensure the stability and effectiveness of democratic systems. Attention is paid to the contribution to the concept of defensive democracy by such outstanding thinkers and politicians as John Locke, Jeremy Bentham, James Mill and James Madison. The implementation of certain aspects of protective democracy in the US Constitution is considered, and attention is drawn to the role of the republican form of government in this context. Certain milestones in the development of the concept of protective democracy in the 20th century are shown, as well as some ideas regarding this issue in the 21st century, namely the types of protective democracy and its identification as an indirect form of democracy, are explored. Characteristic features of protective democracy and its definition are proposed.

Marine redox dynamics and biotic response to the mid-Silurian Ireviken Extinction Event in a mid-shelf setting

The early Silurian Llandovery–Wenlock boundary interval is marked by significant marine perturbations and biotic turnover, culminating in the Ireviken Extinction Event and the Early Sheinwoodian Carbon Isotope Excursion. Here, we apply multiple independent redox proxies to the early Wenlock Buttington section, which was deposited in a mid-shelf location in the Welsh Basin, UK. To account for the regional geochemical variability in marine sediments due to factors such as sediment provenance, we first define oxic baseline values for the Welsh Basin, utilizing deeper water, well-oxygenated intervals of late Llandovery age. Our approach documents unstable, oscillating redox conditions on the mid-shelf at Buttington. We suggest that these dynamic redox fluctuations are likely to relate to changes in the position of the chemocline or a migrating oxygen minimum zone. Benthic biota, such as trilobites, brachiopods, bivalves and gastropods, appear to have been relatively unaffected by fluctuating oxic-ferruginous conditions, but were more severely impacted by the development of euxinia, highlighting the inhibiting role of toxic sulfides. By contrast, the redox perturbations appear to have placed extreme stress on graptolites, causing many extinction losses regardless of the specific development of euxinia. Supplementary material: The geochemical data for the Buttington section is available at https://doi.org/10.6084/m9.figshare.c.7165009 Thematic collection: This article is part of the Chemical Evolution of the Mid-Paleozoic Earth System and Biotic Response collection available at: https://www.lyellcollection.org/topic/collections/chemical-evolution-of-the-mid-paleozoic-earth-system

Tracking earmarked funding to international organizations: Introducing the earmarked funding dataset

AbstractOver the past two decades, donor funding of international organizations (IOs) such as the United Nations, has shifted from core resources toward earmarked contributions. While core resources provide IOs with discretion how to achieve their mandates, earmarked contributions require IOs to focus their assistance on specific themes, sectors, countries, or projects, as determined by the donors. Our understanding of the drivers and effects of earmarked funding has been limited by the lack of systematic data. To address this gap, we introduce the Earmarked Funding Dataset. The dataset contains 342,812 earmarked aid activities from nearly 50 donors with over 340 IOs with a mandate in international development from 1990 to 2020. We first explore the data descriptively to cast light on the evolution of the multilateral development system. We then use the data to examine whether and how donors financially reward well-performing IOs. To that end, we combine our data with newly available performance data synthesized from Multilateral Organization Performance Assessment Network (MOPAN) evaluations of 32 IOs in 2009–2020. Using difference-in-difference estimations, we find a significantly positive relationship between outcome performance and earmarked contributions. In contrast, performance does not seem to affect core resources. These patterns suggest that donors reward well-performing multilaterals with more funding, albeit based on development outcomes which are not easily contractible. From a policy perspective, these findings suggest that performance-based approaches to aid allocation—as they are currently practiced—upload the financial risks of organizational reform processes to international organizations.

ADVANCING POS SYSTEMS FOR SEAMLESS RETAIL EXPERIENCES

This research paper explores the significance of advancing point of sale (POS) technologies in modern commerce, with a focus on their role in improving business operations and enhancing customer experiences. POS systems serve as critical tools for businesses across various industries, facilitating transactions, managing sales processes, and providing valuable insights into business performance. The paper delves into the evolution of POS systems, from traditional cash registers to sophisticated digital solutions, and examines the current state of POS technology, including hardware and software components. Moreover, it discusses recent trends and advancements in POS innovation, such as the integration of emerging technologies like artificial intelligence (AI) and Internet of Things (IoT), and their implications for businesses. Through empirical research, case studies, and expert analysis, the paper aims to provide insights into the benefits and challenges of adopting advanced POS technologies, as well as recommendations for businesses seeking to leverage these technologies to drive growth and improve operational efficiency in today's dynamic market place. Keywords- Point of Sale (POS) Systems, Advancing Technologies, Retail, Business Operations, Customer Experience, Emerging Technologies, Artificial Intelligence (AI), Internet of Things (IoT), Payment Processing, Inventory Management, Cloud-based POS, Customer Engagement, Digital Commerce, Innovation, Competitive Advantage.

On the aeroelastic bifurcation of a flexible panel subjected to cavity pressure and inviscid oblique shock

The aeroelasticity of a panel in the presence of a shock is a fundamental issue of great significance in the development of hypersonic vehicles. In practical engineering, cavity pressure emerges as a crucial factor that influences the nonlinear dynamical characteristics of the panel. This study focuses on the aeroelastic bifurcation of a flexible panel subjected to both cavity pressure and oblique shock. To this end, a computational method is devised, coupling a high-fidelity reduced-order model for unsteady aerodynamic loads with nonlinear structural equations. The solution is meticulously tracked by continuous calculations. The obtained results indicate that cavity pressure plays a pivotal role in determining the bifurcation and stability characteristics of the system. First, the system exhibits hysteresis behaviour in response to the ascending and descending dynamic pressures. The evolution of hysteresis behaviour originates from the phenomenon of cusp catastrophe. Second, variations in cavity pressure induce three types of bifurcation phenomena, exhibiting characteristics akin to supercritical Hopf bifurcation, subcritical Hopf bifurcation and saddle-node bifurcation of cycles. The system's response at the critical points of these bifurcations manifests as long-period asymptotic flutter or explosive flutter. Lastly, the evolution of the dynamical system among these three types of bifurcations is an important factor contributing to the discrepancies observed in certain research results. This study enhances the understanding of the nonlinear dynamical behaviour of panel aeroelasticity in complex practical environments and provides new explanations for the discrepancies observed in certain research results.