bluuebunny/crossref_metadata_2025 huggingface dataset:
Digital modeling of the interaction of a structure with a foundation in the calculation for seismic action
Authors: Agahanov Elifkhan Kerimhanovich , Agahanov Murad Kirimhanovich , Trufanova Elena Vasilyevna
Published: June 2024

The influence of soil foundtion consideration method on the dynamic characteristics of the building frame has been studied. The object of the study is a monolithic reinforced concrete frame. Modeling of the calculation model according to the scheme "soil foundation - foundation - topside" was performed .Three finite element models have been developed with a variation of taking into account the soil base. Absolutely rigid base, malleable Winkler base and dynamic Savinov foundation are considered. As a result of the dynamic calculation, the frequencies and periods of natural oscillations of the building frame were obtained. Comparison of the obtained results based on three versions of the models has been made. An optimal method for taking into account the soil foundation in the modeling of the soil foundation in the dynamic calculation of the frames of multi-story-buildings is proposed.
Information Foundations for Improvement of the System Multilevel Basic Group Technology Mechanical Treatment
Authors: Rakunov Yuriy Pavlovich , Abramov Valery Vasilevich
Published: June 2024

The information bases and principles for the development of a multilevel basic technology (MBT) system based on the method of analysis and synthesis of design and technological information in the working design documentation of the product are presented. The article deals with the scientific foundations and the Philosophical methodology of the multi-level basic technology system, using the descending and ascending design of technological processes by the "analysis-synthesis" method of design and technological information. The given graphical-text block diagrams allow to consider: - levels of technology and the degree of specification of information; - functions and structure of the MBT system; - a sequence of solving the problems of designing basic and working group technological processes. The application of the synthesis method for solving the problem of searching through technically possible variants of integrable transitions, positions and settings on professional personal computers with the correct filling of the matrix tables by a technologist of medium qualification makes it possible to obtain the optimal for the existing production of the technological processes machining of high-precision turning parts of simple and complex shape. Advantages of the proposed approach in comparison with the traditional ones are a significant increase in the quality of the developed technology and a sharp reduction in the terms of technological preparation of production.
The formation of output capacity of industrial housing construction enterprises
Authors: Spirin Alexander
Published: June 2024

The productivity of industrial housing construction enterprise (IHCE) is determined by its output capacity, reflecting the volume of construction products realized by it for a period. The output capacity of IHCE is based on its potential - the totality of all the resources available to the enterprise, which can be used by it in economic activity. Under the influence of various factors, the potential of IHCE is transformed into its input capacity. Input capacity reflects the maximum volume of construction products that IHCE can produce over a period. Being limited by the resource base, the input capacity of the enterprise is transformed into the resource capacity. Due to low workload, unfavorable probabilistic events and reasons related to economic management, there are losses of resource capacity, and the remaining part of it represents the output capacity. To increase the output capacity of the enterprise it is advisable to resort to the process method - based on the stages of the product life cycle of industrial housing construction enterprises to make a system of interrelated processes and consider the output capacity of each of them.
Organisational and technological reliability of pile foundation construction flow in permafrost
Authors: Stoyanov Igor
Published: June 2024

The construction of pile foundations in permafrost conditions is a durable and cost-effective design that shows high performance of piles in contrast to slab, block and strip foundations. In the Russian experience of construction in permafrost conditions, the most common methods of piling are the following: sinking method, driven method, drill-and-pile method, and drill-and-pile method. Descending method, where the piles are driven into thawed and liquefied soil. Pile driving method, in which piles are driven into frozen ground using percussion mechanisms. Drill-and-pile method, which combines the use of sinking and drilling piles. Drill-and-pile method, in which a borehole is drilled first and then the piles are driven into the frozen ground. Organisational and technological flow reliability involves the efficient use of resources, compliance with standards, organisation of work processes and safety. This allows the objectives to be achieved efficiently and ensures reliable process operation. The main indicators are: system uptime without failure TO, delays in information transfer HO, equipment reliability PO, material quality FO, operator errors DO. In fact, the control of these indicators affects the organisational and technological reliability of the flow and the work production system as a whole.
Demographic burden and average insurance retirement benefit: Scenario approach
Authors: Kostyrin Evgeniy , Suo Si , Drynkin Stepan
Published: June 2024

This research examines the main types of retirement systems for citizens of the Russian Federation. The forecasting of population size and dependency ratio was carried out using the Verhulst equation as a tool for demographic projection. A comparative analysis of the obtained forecasts with the official data of the United Nations (UN) was carried out. It is assessed that the demographic forecast based on the Verhulst equation is accompanied by a more moderate decrease in the dependency ratio compared to the UN forecasts. Therefore, a scenario analysis of the impact of a negative demographic forecast based on UN data and a positive one according to the results obtained by the Verhulst equation on the size of the average insurance retirement is proposed. It is concluded that under the negative scenario of the demographic situation the size of the insurance retirement benefit increases by 11 .69%, while under a positive scenario it increases by 58.54%, which exceeds the growth rate of retirement provision for citizens of the Russian Federation by more than 5 times compared to the negative scenario of the demographic situation in the country.
Ensuring Sustainable Development of the Kyrgyz Republic: The Impact of Administrative and Judicial Control on the Construction Sector
Authors: Kerimkanova Zhanyl Zhusupovna , Bazarbaev Erlan Bazarbaevich
Published: June 2024

The article analyzes the legal framework of administrative justice and administrative-judicial control in the Kyrgyz Republic from the point of view of protecting human and civil rights and freedoms for the construction sector. The trends in the development of these institutions in the country are considered. The article examines the features of administrative and legal regulation, elements of administrative law, from the point of view of their direct connection with the problem of ensuring human rights and freedoms and Citizen. Administrative and judicial control is disclosed in the forms determined by the specifics of relations in the specified industry. The main problem in the Kyrgyz Republic today is the creation of mechanisms of administrative justice that would fully ensure the rights and freedoms of man and citizen, guarantee the effectiveness of the judicial system itself, as well as the rule of law. The purpose of this study is to analyze the legal foundations of administrative justice and administrative-judicial control in the Kyrgyz Republic in the context of the protection of human and civil rights and freedoms in the field of public administration for construction. The main research methods are the formal legal and comparative legal methods.
Facility life cycle management during operation with application of an information model
Authors: Khrustalev Boris Borisovich , Kargin Alexey Alexandrovich , Kargina Anna Anatolievna , Korolev Nikolay Igorevich , Zakharov Sergei Vladimirovich
Published: June 2024

The article is devoted to the review of information modeling technology at the stage of operation of capital construction facilities. The use of information models in the operation of real estate objects is an urgent area. The main issues discussed in the article are the principles of organization during the operation of real estate objects and the expected effects of reducing the operating costs by means of the introduction of information models. Creation of a unified information space for planning organizational issues for the period of operation of the capital construction facility. An option was developed to form a data architecture and sources of information. The article considers measures to improve environmental sustainability and stability of buildings at the stage of operation.
The need for sustainable management to document the remaining Baghdadi heritage houses
Authors: Al-Asadi Laith S.M. , Mohsin Alyaa H. , Al-Juboori Hussein A.M.S. , Fakhratov Mukhammet A. , Sinenko Sergey A.
Published: June 2024

Heritage buildings and houses are not only places that were previously inhabited, but rather living places that reflect the behavior, culture and lifestyle of the ancestors at that time, and it is an existing means to link previous generations with future generations, but there is a clear absence of documentation of these buildings, which are characterized by being environmentally friendly and comfortable in housing. These buildings have unique architectural and engineering characteristics such as the Shanasheel, and it was necessary to document them from a while before they reached what they are now. Al-Bataween area, which was used for housing at the end of the nineteenth century and the beginning of the twentieth century, was chosen as a model for typical heritage buildings, and the houses that remained for periods of more than 100 years were photographed to show the engineering and architectural features. A questionnaire was conducted to explain the reasons for not paying attention to documenting these buildings previously when they reflected their beautiful features. The questionnaire showed a number of reasons behind the lack of interest in these important buildings. There is an urgent need to document what remains of the heritage buildings that will soon disappear.
Citizens’ satisfaction on the urban environmental quality
Authors: Lebedeva-Nesevria N.A. , Barg A.O.
Published: June 2024

The research goal was to estimate public satisfaction with ambient air quality in an industrial city in Russia and describe certain peculiarities in the perception of related health risks. The resulting estimates were used as grounds for describing urban environmental quality. The empirical base of the research was provided by the results of a social study performed in a Russian city with over a million inhabitants. That city was included into the “Clean air” Federal project. The data were collected by conducting an internet survey (n=544). Having analyzed these data, we detected that public satisfaction with ambient air quality was rather low (not more than 11% of the participants chose the variants “quite satisfied” or “fully satisfied”). Most respondents estimated ambient air quality as being “poor” or “very poor” (giving a 3-score estimate or even lower according to a 7-score scale). They also believed that air pollution produced negative effects on their health. People living in an industrial city tend to have alarmist perception of health risks. These risks seem uncontrollable and involuntary to them. Women are a more risk-sensitive group in comparison with men. These obtained data corroborate a hypothesis about a direct relationship between actual and perceived environmental pollution.
Simulation modeling as a tool for predicting pedestrian flows when planning a Moscow Metro surface station
Authors: Karyagina Tatiana Vasilievna , Krylova Leliya Sergeevna , Laamarti Yuliya Alexandrovna , Kulibaba Irina Viktorovna
Published: June 2024

The article substantiates the use of simulation modeling methods to organize efficient and safe passenger movement at the metro station. The list of key objects and their corresponding processes at ZIL station, a part of the Moscow Central Ring (surface line of the Moscow Metro), is determined using structural analysis methods. Based on the results obtained, the input parameters of the simulation model and the rules for realizing the processes corresponding to them were determined. Using specialized software tools, a 3D computer model has been developed that complies with the established rules and demonstrates all aspects of the subject area. Fragments of the model realizing certain scenarios of passenger movement through the station facilities are presented. The obtained model can be used to develop the concept of sustainable development of urban areas and transportation.
Simulation model of a queuing system in the service of state registration, cadastre and cartography
Authors: Altunina Yulia , Korotun Olga , Polevshchikov Ivan
Published: June 2024

The results of formalizing the queuing system in the public not-for-profit company Roskadastr have been presented in this study. For this purpose, all objects involved in processing applications have been identified. Applications included all services that the company provided when the client contacted the appropriate specialist during a personal visit or electronically. The channels for processing applications and the states in which they might be have been established. Based on this, a parametric model has been developed that characterized the processes arising when processing any applications. Models of behavior of clients and company employees have been built. Based on the obtained data and the developed parametric model, a three-dimensional simulation model has been generated, demonstrating different scenarios of system behavior.
Modeling of cash flows from foreign economic activity: Scenario analysis
Authors: Kostyrin Evgeniy , Shevtsov Ivan , Maan Safarbey
Published: June 2024

The prerequisite for the scientific research on this topic is the need to form an economic-mathematical model that would make it possible to predict and simulate the financial flow of the company to provide construction services in time. The aim of the scientific article is to carry out economic and mathematical modeling of the financial flow for the provision of services in time on the example of the project of the company “STROITEL12” JSC. In the demonstrated example, the situation was considered, in which the organization performed design work for 2 years and construction work for 4 years in a foreign country in the framework of the creation of the subway (station + track + station improvement) in Turkey, in the city of Izmir. According to Rosstat, the forecast inflation rate amounted to 5%. The implementation of this project led to the fact that the staff of “STROITEL12” received a reward for the completion of the project ahead of schedule. After the application of the economic-mathematical model in the formation of the financial flow, the employees of the company were more diligent to their work, as their salaries increased. The novelty of scientific research is the application of economic-mathematical model for modeling the cash flows from foreign economic activity of the organization.
Method for systemic risk analysis of mining and economic assessment of high-mountain ore deposits in the Kyrgyz Republic
Authors: Bespalov D.A. , Brovko N.A. , Zenina E.V. , Baimatov I.R. , Alekperova A.K.
Published: June 2024

The prevailing uncertainties that arise during the development of high-mountain deposits are identified, and a method is given for their subsequent minimization and cost reduction, which makes it possible to more reliably and objectively carry out pre-feasibility studies. The results can serve as an assessment of the planned capital and operating costs, which significantly affects the profitability of the development of high-mountain deposits and risk events.
Dropping ‘truth bombs’? The framing of the Russian invasion of Ukraine in Indian broadcast news
Authors: Ravikumar Madhavi , Downey John
Published: June 2024

In a late October 2022 international YouGov public opinion poll, findings indicated that more Indians attributed responsibility for the Russian invasion of Ukraine to ‘the West’ rather than Russia (28% compared to 27%, while 45% indicated both were accountable or expressed uncertainty). This study seeks to elucidate why such perceptions prevail, drawing upon the longstanding strategic partnership between the former Soviet Union and, subsequently, Russia, with India dating back to the 1950s and the portrayal of the Russian invasion within Indian broadcast news media. We argue that the media coverage of the conflict exhibits three main frames: the invasion as an attack by Russia on Ukrainian sovereignty, an anti-West pro-Russia frame, and a perspective aligning with Indian national interests. Both international and domestic proponents of these frames actively seek to shape the narrative presented, with media organizations deciding which frames to prioritize and which political actors to endorse. Consequently, we argue that the news media plays a pivotal role in shaping public perceptions of the conflict, influencing the Indian government's approach toward the war.
Introducing Comparative Death Penalty Database (CDPD)
Authors: Anckar Carsten , Denk Thomas
Published: June 2024

The death penalty is a unique form of punishment as it is the most consequential penalty with no options for reversibility. Politically, it is a highly controversial form of punishment, the usage of which varies strongly between and within countries over time. Existing databases on death penalty usage generally cover a time period from the 1950s and onwards. In this article, we introduce a new database that covers the period 1800–2022 for all currently independent countries in the world. We provide a yearly categorization of death penalty status as well as changes of the status. In descriptive analyses, we show how the new data provides a more comprehensive picture of the development of death penalty trends worldwide. The database provides researchers with new opportunities to study the death penalty from a variety of perspectives.
Human parainfluenza virus 3 vaccine candidates attenuated by codon-pair deoptimization are immunogenic and protective in hamsters
Authors: Afroz Sharmin , Saul Sirle , Dai Jin , Surman Sonja , Liu Xueqiao , Park Hong-Su , Le Nouën Cyril , Lingemann Matthias , Dahal Bibha , Coleman John Robert , Mueller Steffen , Collins Peter Leon , Buchholz Ursula Johanna , Munir Shirin
Published: June 2024

Human parainfluenza virus type 3 (HPIV3) is a major pediatric respiratory pathogen lacking available vaccines or antiviral drugs. We generated live-attenuated HPIV3 vaccine candidates by codon-pair deoptimization (CPD). HPIV3 open reading frames (ORFs) encoding the nucleoprotein (N), phosphoprotein (P), matrix (M), fusion (F), hemagglutinin–neuraminidase (HN), and polymerase (L) were modified singly or in combination to generate 12 viruses designated Min-N, Min-P, Min-M, Min-FHN, Min-L, Min-NP, Min-NPM, Min-NPL, Min-PM, Min-PFHN, Min-MFHN, and Min-PMFHN. CPD of N or L severely reduced growth in vitro and was not further evaluated. CPD of P or M was associated with increased and decreased interferon (IFN) response in vitro, respectively, but had little effect on virus replication. In Vero cells, CPD of F and HN delayed virus replication, but final titers were comparable to wild-type (wt) HPIV3. In human lung epithelial A549 cells, CPD F and HN induced a stronger IFN response, viral titers were reduced 100-fold, and the expression of F and HN proteins was significantly reduced without affecting N or P or the relative packaging of proteins into virions. Following intranasal infection in hamsters, replication in the nasal turbinates and lungs tended to be the most reduced for viruses bearing CPD F and HN, with maximum reductions of approximately 10-fold. Despite decreased in vivo replication (and lower expression of CPD F and HN in vitro), all viruses induced titers of serum HPIV3-neutralizing antibodies similar to wt and provided complete protection against HPIV3 challenge. In summary, CPD of HPIV3 yielded promising vaccine candidates suitable for further development.
High-throughput structure determination of an intrinsically disordered protein using cell-free protein crystallization
Authors: Kojima Mariko , Abe Satoshi , Furuta Tadaomi , Hirata Kunio , Yao Xinchen , Kobayashi Ayako , Kobayashi Ririko , Ueno Takafumi
Published: June 2024

Intrinsically disordered proteins (IDPs) play a crucial role in various biological phenomena, dynamically changing their conformations in response to external environmental cues. To gain a deeper understanding of these proteins, it is essential to identify the determinants that fix their structures at the atomic level. Here, we developed a pipeline for rapid crystal structure analysis of IDP using a cell-free protein crystallization (CFPC) method. Through this approach, we successfully demonstrated the determination of the structure of an IDP to uncover the key determinants that stabilize its conformation. Specifically, we focused on the 11-residue fragment of c-Myc, which forms an α-helix through dimerization with a binding partner protein. This fragment was strategically recombined with an in-cell crystallizing protein and was expressed in a cell-free system. The resulting crystal structures of the c-Myc fragment were successfully determined at a resolution of 1.92 Å and we confirmed that they are identical to the structures of the complex with the native binding partner protein. This indicates that the environment of the scaffold crystal can fix the structure of c-Myc. Significantly, these crystals were obtained directly from a small reaction mixture (30 µL) incubated for only 72 h. Analysis of eight crystal structures derived from 22 mutants revealed two hydrophobic residues as the key determinants responsible for stabilizing the α-helical structure. These findings underscore the power of our CFPC screening method as a valuable tool for determining the structures of challenging target proteins and elucidating the essential molecular interactions that govern their stability.
Oriental fruit fly, Bactrocera dorsalis (Hendel)
Authors:   Fera Science, Audsley Neil , Avila Gonzalo ,   Plant & Food Research, Ioratti Claudio ,   Fondazione Edmund Mach, Caron Valerie ,   CSIRO Health and Biosecurity, Ferracini Chiara ,   Università di Torino, Bukovinszki Tibor ,   Netherlands Food and Consumer Product Safety Authority, Kenis Marc ,   CABI, Milonas Panagiotis ,   Benaki Phytopathological Institute, Herz Annette ,   Julius Kühn-Institut, Trdan Stanislav ,   University of Ljubljana, Fatu Ana-Christina ,   Institute for Sustainable Plant Protection, Sabbatini-Peverieri Giuseppino ,   Agricultural Research Council South Africa, Lesieur Vincent ,   CSIRO Health and Biosecurity, Borowiec Nicolas ,   Institut Sophia Agrobiotech, Collatz Jana ,   Agroscope, Tanner Rob ,   European and Mediterranean Plant Protection Organization, McGee Conor ,   Department of Agriculture Food and the Marine Ireland
Published: June 2024

Bactrocera dorsalis, also known as the Oriental fruit fly, is a highly polyphagous invasive pest originating from tropical south east Asia. It has invaded over 50 countries, causing significant economic damage to a wide range of fruit and vegetable crops through oviposition and larval development. The species thrives in tropical and subtropical climates, with potential to spread to warm temperate regions under irrigation or climate change. Classical biological control efforts against B. dorsalis have primarily involved the introduction of parasitic wasps, such as Fopius arisanus and Diachasmimorpha longicaudata. F. arisanus has shown high effectiveness, with significant reductions in B. dorsalis populations in Hawaii, French Polynesia, and parts of Africa, while D. longicaudata has been less successful. F. arisanus is considered the most promising biological control agent due to its high parasitism rates and adaptability, though it has not established in all regions. Other natural enemies, including various hymenopteran parasitoids and the predatory ant Oecophylla longinoda, have shown limited effectiveness and potential ecological drawbacks. Combining F. arisanus with other biological control agents targeting different life stages of B. dorsalis could enhance overall control efforts.
Siberian moth, Dendrolimus sibiricus (Tschetverikov)
Authors:   Fera Science, Audsley Neil , Avila Gonzalo ,   Plant & Food Research, Ioratti Claudio ,   Fondazione Edmund Mach, Caron Valerie ,   CSIRO Health and Biosecurity, Ferracini Chiara ,   Università di Torino, Bukovinszki Tibor ,   Netherlands Food and Consumer Product Safety Authority, Kenis Marc ,   CABI, Milonas Panagiotis ,   Benaki Phytopathological Institute, Herz Annette ,   Julius Kühn-Institut, Trdan Stanislav ,   University of Ljubljana, Fatu Ana-Christina ,   Institute for Sustainable Plant Protection, Sabbatini-Peverieri Giuseppino ,   Agricultural Research Council South Africa, Lesieur Vincent ,   CSIRO Health and Biosecurity, Borowiec Nicolas ,   Institut Sophia Agrobiotech, Collatz Jana ,   Agroscope, Tanner Rob ,   European and Mediterranean Plant Protection Organization, McGee Conor ,   Department of Agriculture Food and the Marine Ireland
Published: June 2024

The Siberian moth, Dendrolimus sibiricus, poses a significant threat to coniferous forests in its native range, primarily affecting larch, fir, spruce and pine trees. Outbreaks occur cyclically every decade, lasting 2 to 3 years, resulting in defoliation and potential tree mortality. Despite the severity of its impact, no classical biological control programs have been reported. However, native natural enemies, particularly the egg parasitoid Telenomus sp., have shown promising potential. Studies indicate consistent parasitism rates ranging from 50 to 90% throughout outbreak cycles, with successful laboratory rearing and augmentative release programs in some regions. Telenomus dendrolimi, a species native to East Asia, has demonstrated efficacy in controlling other lepidopteran pests and could be a candidate for managing Siberian moth populations. Further research is needed to explore the potential of Telenomus species and other natural enemies for effective biological control of the Siberian moth in forest ecosystems.
Qhapaq Ñan as World Heritage Site. New Tourist Destinations and Inherited Tensions in Argentina
Authors: Troncoso Claudia A.
Published: June 2024

Qhapaq Ñan, or the Andean Road System, was inscribed on UNESCO’s World Heritage List in 2014. This inclusion was the result of a process initiated by six South American countries (Peru, Bolivia, Ecuador, Colombia, Chile, and Argentina). The process identified the selection of features that distinguished the road and justified the inscription. How was this selection made? Was tourism involved in it? This case study analyzes the details of the Qhapaq Ñan nomination process in Argentina. It especially focuses on the northwestern region of the country, an area with a long (and controversial) history of tourist valorization of Andean heritage. It is argued that tourism was involved in the heritage selection processes in Argentina by two means. Firstly, tourism interests have oriented the choosing of some archeological sites that could be tourist attractions. Secondly, the definition of heritage sections and sites has sought to avoid previous heritage areas where the presence of tourism has been highly conflictive. Avoiding potential conflicts is also at the core of recent tourist projects designed for Qhapaq Ñan in Northwestern Argentina that aim to encourage “off the beaten track” (and supposedly non-controversial) forms of tourism.

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Visitors’ Mindfulness at Dartmoor National Park
Authors: Vozar Elif
Published: June 2024

The concept of mindfulness, derived from psychology, refers to the cognitive state of an individual who actively processes information, is attentive to the surrounding environment, and is open to new information. Mindfulness has attracted a great deal of interest in a variety of fields, but it has only been incorporated into tourism research in a relatively limited way. This case explores how the concept of mindfulness can connect visitors to the environment in protected areas, with a focus on the Dartmoor National Park in the UK. It reports some of the findings of an extensive visitor survey, including the effect of learning and emotional place attachment on mindfulness as well as the effect of mindfulness on interest in learning and conservation. The results suggest the importance of visitors’ mindfulness in the context of UK National Parks. The practical implications of this for visitor management are discussed.

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Investigation of TM (TM=Mg, Cu) doping effect on the luminescence performance of CsPbCl3 from a first-principles investigation
Authors: Wang Junfei , Wang Fei , Fu Xiaonan , Zhang Liying , Li Xiaodong , Wei Yongkai , Shi Guodong , Xu Xiaopei , Luo Yanwei , Jia Yu
Published: June 2024

The inorganic perovskite CsPbCl3 has raised great concern in recent years due to its great tunability of luminescence properties via impurity doping. However, the blue-emitting mechanism of the impurity-doped CsPbCl3 is unexplored. In this work, we focus on the structural, electronic, and optical properties of CsPb1-x
TM
x
Cl3 (TM=Mg, Cu; x = 0, 0.037, 0.074) based on the first-principles calculations. It is indicated that TM doping decreases the lattice parameter, deforms octahedral structure, and improves the stability of CsPbCl3. The increased direct bandgap values and unique TM energy levels occupation show that the doped systems behave only blue-emitting well. The Mg-s and Cu-3d (eg) states out the bandgaps are close to the valence band edge and conduction band edge respectively, both promoting the carrier radiation recombination. Furthermore, the density of states analyses demonstrates that the enhanced emission of TM-doped CsPbCl3 benefits from the TM different electronic configurations and the different hybridization ways (Mg 3s/Cl 3p, Cu eg/Cl 3p), producing more carriers with increasing x respectively. The obtained optical properties imply that the TM-doped systems exhibit significant optical absorption and high carrier mobilities, promoting excellent luminescence efficiency. Our work explains the blue-emitting mechanism of the TM-doped CsPbCl3, providing a prospective strategy for designing highly efficient blue-emitting devices for optoelectronic applications based on the available parent materials by modulating the bandgap, synergistic relation of impurity energy level and band edge, and optical property.
Simplified modeling of butane dehydrogenation: deeper understanding of the system’s dynamics
Authors: Hamad Honar J , Khoshnaw Sarbaz H A , Shahzad Muhammad
Published: June 2024

The dehydrogenation of butane is a catalytic process that involves the separation of hydrogen atoms from an organic molecule, and it relies on the presence of a catalyst Z, such as Ni, Pt, Pd, Fe, ZnO, Cr
2
O
3, or Fe
2
O
3. In this paper, we introduce two highly effective mathematical techniques known as Lumping Compartments (LC) and Intrinsic Low Dimensional Manifold (ILDM) to simplify the complexity of the dehydrogenation of butane. Initially, the model consists of seven nonlinear differential equations with eight parameters. To streamline the model, we applied LC to ten different cases, considering various initial states and parameters. As a result, the number of compartments significantly decreased from seven to three. The obtained computational results and total differences reveal a remarkable agreement between the complete model and the simplified version, demonstrating a high degree of predictive accuracy. Additionally, ILDM is employed to enhance the initial estimation of the slow invariant manifold. This enables us to easily distinguish between the fast and slow variations at each point, with the variations acting as chemical kinetics attractors. Fast chemical reactions are drawn towards these attractors, while slow chemical reactions occur within the manifolds.
Innovative techniques for achieving flat response in a dual-resonance ultra-wideband low-noise amplifier
Authors: Reddy T Snehitha , Nath Vijay
Published: June 2024

This paper introduces a two-stage ultra-wideband low-noise amplifier (UWB-LNA) intended to be used in wireless communication systems. The architecture uses a novel double-resonance load network in the first stage and resistive shunt feedback in the second stage to achieve wide bandwidth with a flat response. A common gate stage at the input port seeks to present a high-impedance load to the single resonant network, while concurrently shunt negative feedback, source degeneration, and cascoded feedback schemes are used to improve performance. In this respect, the cascoded feedback provides flat gain across a wide bandwidth, while the source degeneration helps in impedance matching. Post-layout foot-print for the UWB-LNA designed and simulated using Cadence Virtuoso 180nm technology is 0.532 mm2 with an operating frequency 3.1–10.6 GHz incorporated. Operating on a 1.8 V supply voltage, it consumes 6 mW of power. The amplifier achieves a maximum gain of 18.75 dB, maintaining a flat low noise figure of 3.15 dB across frequencies ranging from 3.1 to 10.6 GHz. Stability analysis using the Roulettes test confirms the reliability of the proposed LNA, with Kf > 1 and Δ < 1.
Overmodulation causes a variation in the number of jumps in the Duffing system
Authors: Song Jin , Sun Hanyu , Han Xiujing , Zou Yong , Bi Qinsheng
Published: June 2024

Amplitude modulation, involving normal and overmodulation scenarios, is crucial for information transmission. However, the complex dynamics of how modulation phase shift affects relaxation oscillations, especially under overmodulation conditions, has not been fully elucidated. Thus, this paper aims to explore the dynamical mechanism of relaxation oscillations affected by modulation phase shift under overmodulation conditions. The result shows that minor phase adjustments in low overmodulation phases can change the time series of the signal. Notably, at critical modulation phase thresholds, the number of transitions in each period of relaxation oscillations increases, and this phenomenon can be observed across a range of parameter values. However, further increase in phase will lead to the decrease in the number of transitions in relaxation oscillations, which demonstrates a clear correlation between phase adjustments and fold bifurcations affecting oscillation patterns. Based on the tri-parametric and bi-parametric bifurcation analysis, we explore the effect of overmodulation index on the number of transitions, and find that higher indices induce complex variations in it. These findings highlight the intricate interplay between modulation phase and modulation index in determining relaxation oscillation patterns, which are crucial for understanding amplitude modulation diversity and can serve as a reference for future research on other modulation scenarios.
Effects of Pöschl-Teller potential on approximate ℓ ≠ 0-states solution in topological defect geometry and Shannon entropy
Authors: Ahmed Faizuddin , Bouzenada Abdelmalek , Moreira Allan R P
Published: June 2024

This study is centered on examining the behavior of quantum particles governed by the Schrödinger equation, particularly when subjected to a trigonometric Pöschl-Teller potential within the context of a topological defect environment. We set out to derive the radial wave equation and employ the Nikiforov-Uvarov method to solve it and present the eigenvalue solution of the quantum system. In fact, it is shown that the topological defect alters both the energy eigenvalues and the corresponding wave functions of quantum particles, diverging from the behavior observed in flat space with this potential. Moreover, we compute the Shannon entropy for this quantum system under investigation and assess how the presence of the topological defect and potential influences it.
Mid-infrared dual-wavelength operation of a diode-pumped Tm:YScO3 laser
Authors: Chen Chong , Wang Chi , Li Yongliang , Shangguan Jiawei , Feng Hailong
Published: June 2024

A simultaneous continuous-wave (CW) dual-wavelength Tm:YScO3 laser using a single birefringent filter (BF) was experimentally demonstrated. We calculated the wavelength-dependent loss property of the BF. By adjusting the BF plate, the spectral intensity ratio of the generated wavelengths can be maintained to be 1:1. A simultaneous CW dual-wavelength Tm:YScO3 laser at 1948 and 2098 nm is experimentally realized. For a pump power of 15.2 W, mid-infrared dual-wavelength laser radiation at 1948 and 2098 nm and 5.9 W of output power using a 5% output coupler could be generated. A slope efficiency of 42.2% with respect to the absorbed pump power and optical-to-optical efficiency of 38.8% for the highest-incident pump power were obtained. To our knowledge, this is the first study that has realized the dual-wavelength in a Tm:YScO3 laser.
Searches for multi-Z boson productions and anomalous gauge boson couplings at a muon collider*
Authors: Jiang 蒋 Ruobing 若冰 , Jiang 蒋 Chuqiao 楚翘 , Ruzi 阿里木·肉孜 Alim $StringUtils.gbEncoding($!{author.mingCn}) , Yang 杨 Tianyi 天一 , Ban 班 Yong 勇 , Li 李 Qiang 强
Published: June 2024

Multi-boson productions can be exploited as novel probes either for standard model precision tests or new physics searches, and have become a popular research topic in ongoing LHC experiments and future collider studies, including those for electron–positron and muon–muon colliders. In this study, we focus on two examples, i.e.,

direct productions through

annihilation at a

muon collider, and

productions through vector boson scattering (VBS) at a

muon collider, with an integrated luminosity of

. Various channels are considered, including

and

+2jets. The expected significance on these multi-Z boson production processes is reported based on a detailed Monte Carlo study and signal background analysis. Sensitivities on anomalous gauge boson couplings are also presented.
Modelling and experiment to stabilize disruptive tearing modes in the ITER baseline scenario in DIII-D
Authors: Turco F. , Luce T.C. , Boyes W. , Hanson J.M. , Hyatt A.W.
Published: June 2024

The achievement of high gain, stationary conditions in a tokamak scenario aimed at producing fusion energy in the ITER Project is crucial to the demonstration that this form of energy can be used in future reactors to provide cheap and clean energy globally. Disruptions are a challenge for the fusion energy field, in particular for the ‘ITER Baseline Scenario’ (IBS), as reproduced in the DIII-D tokamak. This work shows that a solution has been found for the m= 2/n = 1 tearing modes that have consistently caused disruptions in the IBS: stable operation down to zero input torque was achieved by modifying the current density profile at the beginning of the pressure flattop and the ELM character later in the discharges, guided by previous results showing that the most likely cause of these instabilities is the current density profile. The coupling between sawteeth, n>2 modes and the 2/1 TMs is shown to not be statistically significant, nor the leading origin for the evolution towards instability. Ideal and resistive MHD modeling provide positive verification that a steeper ‘well’ in the region of the q = 2 rational surface leads to worse ideal stability, higher tearing index Δ’ and lower threshold Δ’c for resistive instabilities, consistent with the experimental results. This provides confidence that the methods used in this work can be extrapolated to other devices and applied to avoid disruptions in ITER and pulsed fusion devices worldwide.
LSPE-Strip on-sky calibration strategy using bright celestial sources
Authors: Génova-Santos R.T. , Bersanelli M. , Franceschet C. , Gervasi M. , López-Caraballo C. , Mandelli L. , Mandelli S. , Maris M. , Mennella A. , Rubiño-Martín J.A. , Villa F. , Zannoni M. , Baccigalupi C. , Caccianiga B. , Colombo L. , Cuttaia F. , Farsian F. , Morgante G. , Paradiso S. , Polenta G. , Ricciardi S. , Sandri M. , Taylor A. , Terenzi L. , Tomasi M.
Published: June 2024

In this paper we describe the global on-sky calibration
strategy of the LSPE-Strip instrument. Strip is a microwave
telescope operating in the Q- and W-bands (central frequencies of 43
and 95 GHz respectively) from the Observatorio del Teide in
Tenerife, with the goal to observe and characterise the polarised
Galactic foreground emission, and complement the observations of the
polarisation of the cosmic microwave background to be performed by
the LSPE-SWIPE instrument and other similar experiments operating at
higher frequencies to target the detection of the B-mode signal from
the inflationary epoch of the Universe. Starting from basic
assumptions on some of the instrument parameters (NET, 1/f noise
knee frequency, beam properties, observing efficiency) we perform
realistic simulations to study the level of accuracy that can be
achieved through observations of bright celestial calibrators in the
Strip footprint (sky fraction of 30%) on the determination and
characterisation of the main instrument parameters: global and
relative gain factors (in intensity and in polarisation),
polarisation direction, polarisation efficiency, leakage from
intensity to polarisation, beams, window functions and pointing
model.
Validation of a sampling method and liquid chromatography mass spectrometry analysis method for measurement of fentanyl and five other illicit drugs
Authors: Jeronimo Matthew , Mastel Molly , Gill Jasleen , Davies Hugh
Published: June 2024

With the increased provision of services by health authorities and community organizations allowing supervised inhalation of illicit substances comes concerns about the potential for secondhand exposure to the substances being used, whether in the adjacent community or to workers at the sites. In order to address community concerns surrounding secondhand illicit substance exposure and better protect harm reduction workers, a validated sampling and LC–MS/MS analysis method was developed for 6 illicit drugs: fentanyl, heroin, methamphetamine, cocaine, etizolam, and bromazolam. It was found that the filter used needed to be silanized to be made more inert and avoid loss of analyte due to degradation. Using the silanized filters, recoveries were good (>90%) and the collected samples were found to be stable at room temperature for 2 wk. The sampling volume validated was up to 960 L. The sensitivity and range of the method make it appropriate for short-term (15 min), full shift (8 h), or environmental sampling.
Labial Length and Patient Symptomatology: Is There a Correlation?
Authors: Bhat Deepa , Tevlin Ruth , Lipman Kelsey , Canales Francisco , Furnas Heather
Published: June 2024

Background

Labia minora length is used in classification systems and to determine labiaplasty candidacy, with shorter labia leading to nonsurgical recommendations.

Objectives

The aim of the study was to investigate the correlation between labia length and symptomatology.

Methods

Patients undergoing labiaplasty from January 2017 to May 2023 underwent chart review. Data collected included age, exposed, and total labia length. Patients completed a preoperative survey with possible scores from 0 to 13 to gauge complaints and symptoms.

Results

Out of 50 charts with complete data, the average age was 34. Exposed labia lengths were 10.1 mm (right) and 11.4 mm (left); total lengths from sulcus to edge measured 32.0 mm (right) and 33.4 mm (left). Survey scores averaged 6.5 (range, 2-11) median of 7. The correlation between exposed labia length and symptoms yielded Pearson correlation coefficient values (R) of 0.25 for both right and left sides, with coefficient of determination (r2) values at 0.06. For total labia length, R values were 0.08 (right) and 0.06 (left), and r2 values were 0.007 (right) and 0.003 (left).

Conclusions

The correlation between a patient's exposed and total labia length and reported symptomatology is weak. Patients with longer labia can experience few symptoms, just as those with shorter labia can have a high degree of symptomatology. Rather than use labia length as a primary factor determining labiaplasty candidacy, the focus should be on patient-reported symptoms.

Level of Evidence: 2
Marcha das Vadias: performing disidentification in transnational protests
Authors: Fabian Carly Leilani
Published: June 2024

In 2011, protests against rape culture ignited across the globe. Inspired by SlutWalk Toronto (SWT), organizers planned protests that adapted the rhetorical features of SlutWalk to their local contexts. This article examines the visual rhetoric of Marcha das Vadias (MDV), a series of satellite protests in Brazil. I argue that protestors enacted disidentification as a response to the constitutive rhetoric of SlutWalk, bringing into focus how ideologies of race, class, and religion interact with norms of sex and gender to reinforce rape logic. The translation of “slut” to “vadias” centered the linguistic and cultural contexts of contemporary Brazil while maintaining solidarity with the broader SlutWalk movement. Protestors deploy seven rhetorical personae that resituate the constitutive narrative of the movement. Altogether, their performances of personae enact a rhetoric of survivance, which utilizes collectivity, structural critique, non-linear temporality, and storytelling to resist systems of oppression.
Altitudinal variation in thermal vulnerability of Qinghai-Tibetan Plateau lizards under climate warming
Authors: Zhu Zeyu , Du Weiguo , Zhang Cong , Yu Wei , Zhao Xiaolong , Liu Zhensheng , Zeng Zhigao
Published: June 2024

The survival of ectotherms worldwide is threatened by climate change. Whether increasing temperatures increase the vulnerability of ectotherms inhabiting temperate plateau areas remains unclear. To understand altitudinal variation in the vulnerability of plateau ectotherms to climate warming, Qinghai toad-headed lizards (Phrynocephalus vlangalii) were subjected to semi-natural enclosure experiments with simulated warming at high (2,600 m) and superhigh (3,600 m) elevations of the Dangjin Mountain, China. Our results revealed that the thermoregulatory effectiveness and warming tolerance (WT) of the toad-headed lizards were significantly affected by climate warming at both elevations, but their thermal sensitivity remained unchanged. After warming, the thermoregulatory effectiveness of lizards at superhigh elevations decreased because of the improved environmental thermal quality, whereas that of lizards at high-elevation conditions increased. Although the body temperature selected by high-elevation lizards was also significantly increased, the proportion of their active body temperature falling within the set-point temperature range decreased. This indicates that it is difficult for high-elevation lizards to adjust their body temperatures within a comfortable range under climate warming. Variations in the WT and thermal safety margin (TSM) under climate warming revealed that lizards at the superhigh elevation benefited from improved environmental thermal quality, whereas those at the high elevation originally on the edge of the TSM faced more severe threats and became more vulnerable. Our study highlights the importance of thermal biological traits in evaluating the vulnerability of ectotherms in temperate plateau regions.