bluuebunny/crossref_metadata_2025 huggingface dataset:
Joint action "Innovative partnership for action against cancer"
Authors: Vasić Milena , Kilibarda Biljana , Jovanović Verica , Živković-Perišić Snežana
Published: January 2022

Malignant diseases are the second most common cause of morbidity and mortality, on the global scale, but also in European Union and Serbia. Recognizing this problem, the European Commission has been continuously investing funds into projects aimed against cancer for the past decade. One such project is the Joint Action "Innovative Partnership for Action Against Cancer", which launched in April 2018 and will wrap up in December 2021. The project is implemented within the Third Health Programme of the European Union, which funded the project. "Innovative Partnership for Action Against Cancer" encompasses 24 countries, representing 44 partner institutions. The National Institute of Public Health of Slovenia (NIPHS) coordinates the project. Project activities are implemented within 10 work packages, of which four are horizontal and mandatory (coordination, dissemination, evaluation and integration into national policies and sustainability), while 6 are the so-called "vertical" work packages, namely: cancer prevention, genomics in cancer control and care, cancer information and registries, challenges in cancer care, innovative therapies in cancer and governance of integrated and comprehensive cancer care. Each of the work packages has its objectives, activities and outcomes. The roadmap for implementation and sustainability of cancer control actions represents the key outcome of work package 4 (Integration in national policies and sustainability), as well as of the entire Joint Action. Work package 4 interviewed the representatives of countries participating in Joint Action to gain insight into their experiences and challenges in implementing cancer control policies. Some of these challenges have also been recognized in Serbia, leading the Government of the Republic of Serbia to adopt the cancer control program in the Republic of Serbia for the period 2020-2022. In the same year, 2020, the World Cancer Day (4 February) was commemorated with the event "Europe's Beating Cancer Plan - Let's Strive for More" in the European Parliament, and a year later, the European Commission presented the Europe's Beating Cancer Plan. Three Joint Action activities implemented thus far made a great contribution to the control of malignant diseases, many documents, instructions, programs were elaborated, and then used as key inputs into the new Europe's Beating Cancer Plan.
The impact of SARS - CoV-2 virus on consumer preferences
Authors: Vučanović Tijana
Published: January 2022

The SARS-CoV-2 virus appeared in the Chinese city of Wuhan, drastically changing consumer preferences ever since. Globalization and facilitated means of sharing information have had a considerable impact on consumer preferences. These preferences are ranked differently as a result of the unknown future of unfolding crisis. Specific changes in the business environment have caused intensive employment of crisis management and other comparable approaches in the problem-solving process in companies, which ensued as a result of the pandemic. The main purpose of this paper is to explain how consumers change their opinion about the importance of different goods and how companies may utilize these changes towards their own business objectives. The paper also shows how goods are classified according to different types of preferences. The final aim of this analysis is to contribute to a general understanding of how companies could change their business practices to create innovative products and establish better communication channels with their customers and other businesses.
Microbiological and basic agrochemical properties of Eutric Cambisols in western and southwestern Serbia
Authors: Rasulić Nataša , Delić Dušica , Stajković-Srbinović Olivera , Buntić Aneta , Kuzmanović Đorđe , Knežević Magdalena , Sikirić Biljana
Published: January 2022

One of the most common soil types in area of western and south-western Serbia is the Eutric Cambisol. In order to determine biogenity of this soil type, the presence of total microflora, fungi, actinomycetes, ammonifiers, Azotobacter sp. and oligonitrophils, as well as dehydrogenase activity were examined. Samples were taken from soils used in two different ways (plough fields and meadows). Standard microbiological methods of inoculation a certain decimal dilution on appropriate nutrient media were used. No correlation between the number of microorganisms and type of the soil usage was found. In localities that were under plough fields and meadows, the presence of Azotobacter sp. was confirmed, as an indicator of soil fertility. The correlation of dehydrogenase activity with the total number of microorganisms was not observed. Agrochemical analysis showed acidic to weakly acidic soil reaction, medium to high percentage of organic matter, low content of easily available phosphorus and high content of easily available potassium. There was no correlation between chemical properties of the soil and the number of microorganisms in examined soil type.
Influence of Ambrosia artemisiifolia extract on germination and growth of Pisum sativum L. and Phaseolus vulgaris L. seedlings
Authors: Maksimović Tanja , Marković Larisa , Hasanagić Dino
Published: January 2022

Previous research has shown that there are allelopathic interactions between plants, releasing allelochemicals for which it is still unknown whether they are randomly generated or transmitted from generation to generation. In this paper, the influence dried ragweed leaves (Ambrosia artemisiifolia L.) aqueous extract of different concentrations: concentrated extract (10%), extract diluted to 1/2 (5%); 1/4 (2.5%) and 1/8 (1.25%) on germination and growth of peas and beans was monitored. The results showed that the increased concentration of ragweed extract inhibited germination, prolonged germination time and decreased the germination index of both test plant species compared to the control. The ragweed extract (concentrated and 1/2) reduced the growth of shoots and roots compared to the control (by more than 50%), with the inhibitory effect being more visible on young pea plants compared to beans. The results of the research showed that the presence of ragweed as a weed in the field significantly reduces the germination and growth of cultivated plants, which is why care should be taken to suppress and remove it in a timely manner.
Proposed Concept of Service Life Extension of Marine Propulsion Shafts
Authors: Vicencio Mario
Published: January 2022

Marine propeller shafts, like most power transmission shafts, are fatigue-loaded components. Because of the corrosive environment, they operate in, a marine propeller shafts' corrosion fatigue strength may the limiting factor in its design.

The life of a fatigue-loaded mechanical component is dependent on the tensile stresses it is subjected to in service. If effective tensile stresses acting on a shaft could be reduced. Service life could be extended Shot Peening is a mature, developed procedure that has been proven successful in raising fatigue strength and retarding Stress Corrosion Cracking. A rather simplified approach explaining how and why it works in addressing the very complicated subject of fatigue is presented here.

Particularly in the aerospace and automotive industries, its successful applications are well documented The practical suggestion on how it could be applied in providing extended service lives for marine propeller shafts is attempted in this paper. Several relevant case studies conducted by other researchers are presented.
Quiet Propeller Design for a Fisheries research Vessel
Authors: Michael Thad , Jessup Stuart , Wilson Michael
Published: January 2022

A propeller was designed and tested for the National Oceanic and Atmospheric Administration (NOAA) fisheries research vessel FRV-40. The ship is propelled by a single propeller operating in the wake of a skeg. The radiated noise goal required the propeller to be capable of operating cavitation free at a speed of at least 11 knots. The propeller was also required to meet ABS ice class C0. A five-bladed, fixed-pitch propeller was designed to meet the requirement. The design was completed using lifting line, lifting surface, and panel codes. The design propeller incorporates tip unloading, large diameter, thick blades, and long chord lengths to achieve the required performance. Open water and powering tests were performed at the David Taylor Model Basin. Cavitation evaluation testing was performed in the Navy's Large Cavitation Channel.
Theoretical Estimation of the Upper Efficiency Boundary for an Arbitrary Isolated Hydraulic Propulsor
Authors: Achkinadze Alexander S.
Published: January 2022

This paper presents a thorough analysis of the optimal ideal propulsor (OJP) theory. A significantly improved solution is obtained for the classical problem formulated by W.J.M Rankine. For instance, the uniform distribution of the axial induced velocity in the far propulsor wake is shown to be sufficient for obtaining the desirable minimum of energy losses at a given thrust value if the additional condition is imposed on the distribution of the axial induced velocity at infinity. Following Rankine, the steady flow of ideal incompressible fluid is considered without free and solid boundaries. As a result, the upper boundary of efficiency is estimated for the isolated propulsor with a non-expansible wake. The obtained estimation is used for a number of practical examples, where the more complicated mathematical models are employed.
The Gulf Coast Waterjet Design and Experimental Evaluation Project for a Small Navy Ship
Authors: Wilson Michael B. , Hoyt John G. , Scherer J. Otto , Gorski Joe J. , Becnel Alan J.
Published: January 2022

This paper presents selected results from a three-year Office of Naval Research-funded project directed at developing technology for integrated water jet propulsion systems. This involved the development and validation of prediction tools for the design, computational evaluation, and experimental assessment of a specific application of water jet propulsion to a small Navy ship. With the choice of an existing well-suited hull form of convenience, the baseline design included the determination of overall water jet system operational parameters, design geometry of the inlet and ducting, and design of an axial-flow water jet pump. Numerical flow computations using potential flow and RANS computer codes were used to evaluate flow details at every stage. Model hull and twin water jet propulsion units were constructed according to the design created for the project. An extensive ship model powering test was carried out in the large towing basin at NSWCCD, featuring the collection of force, velocity distributions, and pressure data needed to apply the ITTC momentum and energy flux performance analysis method. Detailed propulsion results for thrust and jet system power are presented for the case of the 25-knot design speed (Fn = 0.6) of the baseline ship hull.
Advanced Blade Sections for High Speed Propellers
Authors: Black Scott , Shen Young , Jessup Stuart
Published: January 2022

As surface ships are required to achieve higher speeds to meet their mission requirements, many still have intermediate speed endurance requirements that necessitate higher efficiency than some high-speed propulsor options con provide. This effort looks into developing propellers with blade sections that have the efficiency characteristics of conventional submerged sub-cavitating propellers at low and inte1mediate speeds but can transition to the super-cavitating mode for highspeed operation without encountering thrust breakdown.
Bulkhead Seals - A Sealing Solution
Authors: Roche Brian P.
Published: January 2022

Typical Marine bulkhead seals today utilize a non-metallic seal ring of some kind to seal between the shaft and the seal housing mounted to the bulkhead. The sealing feature can occur continuously, or be actuated when needed. These arrangements can fail to work effectively in practice for a variety of reasons. This paper discusses segmented carbon seals as a viable sealing method Test results are presented, as well as proposed mounting arrangements. A discussion of circumferential seals in general is included.
Updates on Clinical Trials for Myelofibrosis: Highlights From SOHO 2021
Authors: Nodzon, PhD, ARNP, AOCNP Lisa
Published: January 2022

Lisa Nodzon PhD, APRN, AOCNP®, of Moffitt Cancer Center, reviews new therapeutic approaches in myelofibrosis presented in a session led by Srdan Verstovsek, MD, PhD, of The University of Texas MD Anderson Cancer Center, at the 2021 SOHO Annual Meeting.
BCMA-Directed CAR T Cells in Relapsed Refractory Multiple Myeloma: Highlights From SOHO 2021
Authors: Nodzon, PhD, ARNP, AOCNP Lisa
Published: January 2022

Lisa Nodzon PhD, APRN, AOCNP®, of Moffitt Cancer Center, reviews data on clinical trials and future directions in BCMA-directed CAR T cells presented in a session by Jesus G. Berdeja, MD, of Sarah Cannon Cancer Institute, at the 2021 SOHO Annual Meeting.
Greenhouse gas emission in Cattle Livestock System, the challenge in quantification and mitigation strategies: meta-synthesis
Authors: Sarnighausen Valéria Cristina Rodrigues , Silva Ana Carolina de Souza , Moraes Sergio Oliveira
Published: January 2022

Emission factors are references to compose future projections related to global emissions, climate change, and sustainable practice. The inventories are commonly based on theoretical standard emission factors according to the Intergovernmental Panel on Climate Change and European Monitoring and Evaluation Program, which is susceptible to uncertainties. Global demand for livestock productions tends to grow by about 70% by the year 2050. Ammonia and nitrous oxide produced by bovine waste constitutes 40% of the anthropogenic production of GHG. Emissions related to enteric fermentation and waste represent 80% of methane emissions from agriculture or almost 40% of global emissions. This pressure on producers and natural resources will require sustainable management as a mitigation process. In order to identify the main challenges of the quantification of greenhouse gas emissions from cattle livestock, we developed a qualitative meta-synthesis of scientific experimental studies, and we find an integrated assessment related to 53 papers. The result shows the challenges of scientific research in standardizing methodologies and clarifying the gaps in relation to emissions from cattle raising sources. The mitigation strategy that can actually be used in the short term to reduce emissions from waste is the anaerobic digestion process. Reducing enteric methane emissions through diet modification still presents numerous challenges. Quantification of greenhouse gas emission and mitigation potential, in loco, are necessary to better elucidate the effects of diets and management of the animal production system, to promote technical orientations at the farm level.
The albatross about our neck :
Authors: Schuur Stacy S
Published: January 2022

Albatross (Family Diomedeidae) are long-lived seabirds that inhabit most of the world's oceans coming ashore only to breed. Most of the species are listed as at least vulnerable by the IUCN and have been tracked during breeding and non-breeding seasons. This review set against Samuel Taylor Coleridge's epic poem The Rime of the Ancient Mariner examines the current threats to albatross including fisheries, plastic ingestion, oil pollution, climate change, and chemical contamination while demonstrating how albatross may serve as a biomonitor for the state of our oceans.
Teacher Education and Co-Learning with ESD
Authors: Larsen Niels
Published: January 2022

Education for a sustainable future includes, not only qualitative basic education (Goals 4 and 4.7 of the Sustainable Development Goals (SDG)) but also reorientating and transforming educational institutions such as Teacher Training Institutions (TTI) to address sustainable development and learning in a global context.TTIs have the potential to bring knowledge, skills, values and develop action competences and social learning for future generations and give hope for creating a more sustainable future. This article focuses on a cross-national partnership in TTI education, and discussions from a case study lead to an awareness of what is called three-layered cultural challenge on micro, mezzo and macro level when establishing international partnerships in education.
Evaluation of Art Research for Sustainable Development
Authors: Brook Lesley
Published: January 2022

An exhibition of environmental artworks in 2020 created value for members of the public. The artists were responding to climate change and wider issues of human-caused changes to the planet. This study, undertaken for the researcher’s Master of Professional Practice, evaluated the emotional impact of that exhibition on visitors. Each participant sorted photographs of the artworks according to the strength of their positive/negative emotional responses to the artworks. This was followed by a semi-structured interview. This paper presents the results of analysis of the transcripts of answers by 24 participants to three of the questions asked in interview. Participants were asked to describe how they feel about the effects of human activity on our world, to identify which artwork or artworks most closely represented how they felt about that, and whether they thought or felt differently about the effects of human activity on our world after experiencing this exhibition. Their answers suggest that a values-driven approach is suitable for improving human and institutional capacity on climate change mitigation, and that environmental art has a valuable role to play, to maintain awareness about climate action and to encourage public support for environmental initiatives.
Managing the communication channel. Discursive representations of clinical communication in forensic psychiatric reports
Authors: Galasiński Dariusz , Ziółkowska Justyna
Published: January 2022

Background: Forensic reports require clinicians’ presence as an agent in court-ordered forensic assessment.Aim: We focus on discursive representations of clinical communication in forensic psychiatric reports.Methods: We perform a critical discourse analysis of 142 forensic assessment reports for 33 patients detained and hospitalized on forensic wards in three hospitals in the southwest of Poland. Results: Clinical communication is constructed as controlled by the clinician. All references to patients’ communication are anchored in interpretation by the clinician. While the speaking patient is explicitly constructed as a communicator, the clinician her/himself is only very rarely represented as personally communicating, invoking an impersonal voice of institutional medicine. Discussion: Our study offers insight into the role of communication is forensic psychiatry as serving the clinician to construct an institutionally useful account of the patient. In contrast to psychiatry’s pronouncements, communication is not a means for a clinical dialogue, but for an institutional monologue. Conclusion: The results of our qualitative study are useful as do not only examine how things are done in forensic psychiatry, but also what it means in its context.
Competition and Market Contestability in Ghanaian banking industry: A Panzar-Rosse Approach
Authors: Boadi Isaac , Mawutor John Kwaku Mensah , Dzorka Modupeola Adefunso , Gbade Vivian Aku
Published: January 2022

The present study evaluates the market structure of Ghana’s banking industry and estimates the nature and degree of competition. This study uses non-structural methodology proposed by Panzar-Rosse Model known as “H-statistic” to empirically assess competitiveness in the Ghanaian banking market. The study uses 23 banks in Ghana from 2000 to 2019, compiled and reported by Ghana Association of Bankers (GAB). The study results show that banks in Ghana derive their revenue in conditions of monopolistic competition. Thus, Contestable markets theory and Chamberlainian competition theory are validated by the study results. Furthermore, the study results revealed that from 2000 to 2019, after various structural reforms including the implementation of the FINSAP, competition in the Ghanaian banking sector increased. Finally, when the dataset was decomposed into local and foreign banks, the results indicate that monopolistic competition market conditions are found for both local and foreign banks. Managerially, the presence of a monopolistic market condition adds to the call for managers of the banks to consider factor input prices in an attempt to generate more revenues. Second, to avoid negative consequences of competition, managers of these banks should not rely on a single income source but also indulge in non-intermediation activities. In terms of policy, pro-structural shift policies that have helped with the transition from a monopoly structure to a monopolistic competition free entry or contestable market structure should be rigorously pursued by the policymakers. Besides, policy directives that enhance greater consolidation in the banking sector shouldbe pursued rigorously. Finally, the results from this study could help policy-makers to fashion an appropriate optimal intervention and stability policies geared towards enhancing banking stability at different levels of bank competition.
Une jeunesse en quête de sens? Le rapport au travail des jeunes français à travers le prisme des effets de génération et d’âge
Authors: Bonnet Estelle , Mazari Zora , Verley Élise
Published: January 2022

This article examines the evolving relationship to work among French youth, in the context of relatively
unstable employment and deteriorating conditions for entry-level employees. It explores the objective
dimensions of work (such as job quality), and more subjective considerations related to career paths, work
situations, and professional or social priorities. The study draws on two complementary sources. The
generational surveys conducted by the Centre d’études et de recherches sur les qualifications (Céreq)
have allowed us to examine how representations of work shifted across an 18-year span. Meanwhile, data
related to a single cohort of young people over seven years of their working life have allowed us to assess
the effect of age. We explore the latter in terms of individual life and work experiences, the stages
involved in the transition to adulthood, social background, and gender. Ultimately, the article identifies
four categories of youth, each of which corresponds to a distinct and subjective relationship to work.
These categories reflect various degrees of satisfaction and resignation in relation to work situations,
setbacks, and opportunities for advancement. However, most young people remain optimistic about the
future.
Valoración de Competencias Emocionales de adolescentes en clases online durante COVID-19 en escuela pública de São Paulo
Authors: Vaquero-Diego María , Ribeiro Paccola Flávia
Published: January 2022

Objetivo: El objetivo de la investigación se basó en analizar, a través de un aula virtual síncrona, desarrollada durante la pandemia, entre España y Brasil, cómo la pedagogía activa, en que el alumno actúa activamente en su aprendizaje, puede ser desarrollada dentro de la sala de aula virtual. Además, se procede a evaluar las competencias emocionales, con un cuestionario online, para impulsar su desarrollo futuro.

Diseño/metodología/enfoque: A partir de una secuenciación didáctica totalmente online de tres sesiones se desarrolla una presentación de las profesoras extranjeras y una clase de vocabulario emocional (clase 1), una conversación acerca de emociones finalizada con un cuestionario sobre la situación de COVID-19 y la escuela, donde se proponen acciones de autodeterminación personal y social (clase 2) y un bingo virtual utilizando la Pedagogía Activa (PA), (clase 3). La recopilación fue cualitativa y cuantitativa y se hizo con 63 alumnos de la enseñanza media, entre 14 y 19 años, teniendo en cuenta 3 preguntas relacionadas con la situación emocional de ellos durante la pandemia.

Resultados: La Pedagogía Activa mostró un excelente método para motivar a los alumnos a participar de las clases virtuales. Según relato de la profesora, la presencia de los alumnos aumentó después de la primera clase de la secuenciación didáctica y se mantuvo alta hasta la última. Los datos nos informan, en esta muestra tomada, que los alumnos sienten emociones relacionadas con tristeza y miedo cuando piensan en las clases on-line y también que sienten felicidad y miedo cuando piensan en regresar a las aulas.
Kernel least logarithm absolute difference algorithm based on P-norm
Authors: Huo Yuan-Lian , Tuo Li-Hua , Qi Yong-Feng , Ding Rui-Bo ,   College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730000, China,   College of Computer Science and Engineering, Northwest Normal University, Lanzhou 730000, China
Published: January 2022

The kernel adaptive filtering is an efficient and nonlinear approximation method which is developed in reproducing kernel Hilbert space (RKHS). Kernel function is used to map input data from original space to RKHS space, thus solving nonlinear problems is efficient.Impulse noise and non-Gaussian noise exist in the real application environment, and the probability density distribution of these noise characteristics shows a relatively heavy trailing phenomenon in the statistical sense. α stable distribution can be used to model this kind of non-Gaussian noise well. The kernel least mean square(KLMS) algorithms usually perform well in Gaussian noise, but the mean square error criterion only captures the second-order statistics of the error signal, this type of algorithm is very sensitive to outliers, in other words, it lacks robustness in α stable distribution noise. The kernel least logarithm absolute difference(KLLAD) algorithm can deal with outliers well, but it has the problem of slow convergence.In order to further improve the convergence speed of nonlinear adaptive filtering algorithm in α stable distributed noise background, a new kernel least logarithm absolute difference algorithm based on p-norm (P-KLLAD) is presented in this paper. The algorithm combining least logarithm absolute difference algorithm and p norm, on the one hand, the least logarithm difference criteria is ensure the algorithm to have good robustness in α stable distribution noise environment, and on the other hand, add p norm on the absolute value of error.The steepness of the cost function is controlled by p norm and a posititive constant ɑ to improve the convergence speed of the algorithm.The computer simulation results of Mackey-Glass chaotic time series prediction and nonlinear system identification show that this algorithm improves the convergence speed with good robustness,and the convergence speed and robustness better than the kernel least mean square algorithm,the kernel fractional lower power algorithm, the kernel least logarithm absolute difference algorithm and the kernel least mean p-norm algorithm.
Experimental investigation of discharge characteristics of alternating current rotating gliding arc discharge under high air pressure
Authors: Zhang Lei , Yu Jin-Lu , Zhao Bing-Bing , Chen Zhao , Jiang Yong-Jian , Hu Chang-Huai , Cheng Hui-Neng , Guo Hao ,   Aeronautics Engineering College, Air Force Engineering University, Xi'an 710038, China,   School of Power And Energy, Northwestern Polytechnical University, Xi'an 710003, China,   AECC Sichuan Gas Turbine Establishment, Chengdu 610599, China,   Army Aviation Research Institute, Beijing 101121, China
Published: January 2022

In order to study the stability of gliding arc plasma discharge under mal-conditions, an experimental system for studying the high air pressure alternating current rotating gliding arc discharge is built. The discharge characteristics, arc motion characteristics and spectral characteristics of rotating gliding arc discharge are analyzed under high pressure experimentally. Experimental results show that the voltage, current and energy increase in the gliding arc discharge with the increase of air pressure. As the air pressure rises to 0.52 MPa, the discharge energy increases from 84.74 to 147.13 J. With the increase of gas pressure, the breakdown frequency of the arc does not change monotonically, but reaches a maximum value of 26.55 kHz at 0.2 MPa, while the emission spectral intensity increases. The “arc channel mutation” occurs in the process of arc motion under high pressure. The electron excitation temperature in the process of gliding arc discharge is calculated by the two-line method, and the electron excitation temperature of gliding arc discharge is 0.8153 eV at an atmosphere pressure. The electron excitation temperature rises with the increase of air pressure. The excitation temperature increases to 5.3165 eV at an air pressure of 0.4 MPa.
Simulation of magnetoplasmadynamic process with applied magnetic field
Authors: Luo Yang , Chen Mao-Lin , Su Dong-Dong , Xu Nuo , Wang Zhong-Jing , Han Zhi-Cong , Zhao Hao ,   Beijing Institute of Mechanical Equipment, Beijing 100854, China,   Science and Technology on Combustion, Internal Flow and Thermo-Structure Laboratory, Northwestern Polytechnical University, Xi’an 710072, China
Published: January 2022

The magnetoplasmadynamic thruster is a typical representative of the high-power electric propulsion device, and the magnetoplasmadynamics process is its core operating mechanism. In order to understand the influence of applied magnetic field on its operating characteristics, the particle-in-cell particle simulation method combined with the scale model based on the self-similarity criterion is used to simulate the operating process of magnetoplasmadynamic thruster with applied magnetic field. The reliability of the model and method are verified by comparing with the experimental results. The plasma characteristic parameter distribution of the thruster during ignition is analyzed, and the influence of external magnetic field and cathode current on the thruster performance are discussed. The research results show that the construction of the discharge arc between the cathode and anode is a key step for thruster ignition and efficient operation. A low-intensity magnetic field is not conducive to the construction of a stable discharge arc, while the plasma beam is concentrated near the axis and the main thrust generation mechanism is the self-field acceleration. The discharge arc between cathode and anode is stable by applying a high magnetic field, and the main mechanism of thrust generation is vortex acceleration, which causes the thrust and specific impulse to increase linearly with the strength of the external magnetic field. The efficiency of the thruster increases with cathode current and the applied magnetic field intensity increasing. The discharge voltage increases with the augment of cathode current, but first decreases and then increases with applied magnetic field intensity increasing.
Thermal conductivity of materials based on interfacial atomic mixing
Authors: Liu Ying-Guang , Xue Xin-Qiang , Zhang Jing-Wen , Ren Guo-Liang ,   School of Energy Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Published: January 2022

The Si/Ge single interface and superlattice structure with atom mixing interfaces are constructed. The effects of interfacial atomic mixing on thermal conductivity of single interface and superlattice structures are studied by non-equilibrium molecular dynamics simulation. The effects of the number of atomic mixing layers, temperature, total length of the system and period length on the thermal conductivity for different lattice structures are studied. The results show that the mixing of two and four layers of atoms can improve the thermal conductivity of Si/Ge lattice with single interface and the few-period superlattice due to the “phonon bridging” mechanism. When the total length of the system is large, the thermal conductivity of the superlattice with atomic mixing interfaces decreases significantly compared with that of the perfect interface. The interfacial atom mixing will destroy the phonon coherent transport in the superlattice and reduce the thermal conductivity to some extent. The superlattce with perfect interface has obvious temperature effect, while the thermal conductivity of the superlattice with atomic mixing is less sensitive to temperature.
Impatient behavior modelling and simulation of bidirectional pedestrian flow dynamics based on proactive effect
Authors: Zhang Qi , Qu Jing ,   School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China
Published: January 2022

Impatience is a psychological factor that varies from person to person and constantly changes with the environment in real time. In this paper, a model based on cellular automaton is presented to investigate the dynamics of bi-directional flow, with considering individual impatient behaviors. Potential field is defined to represent pedestrian’s interest in available space, which provides an approach to the description of proactive mechanism in bi-directional flow. By formulating the dynamics with controllable parameters, individual impatience level is measured, recorded and updated to trigger off the personalized behaviors. Three different patterns of impatient behaviors are modeled and compared with each other. Simulation results demonstrate the different performances of impatient behavior patterns. Comparing with the situation without considering impatience, bidirectional flow is improved in terms of speed, flow rate and waiting time when impatience level is used to triggers off the sidestep behavior. However, the collective performance shows a deterioration at a most density level when impatience is regarded as a direct parameter to estimate the priority to a target cell among several competitors. The parameter sensitivity analysis of impatience intensity and decision threshold shows the flexibility of the model to present the impatience effect. Simulation experiments under different scenarios also reveal the effects of low proportion of slower pedestrians, walkway width and mixed behavior mode on the efficiency of pedestrian counter flow.
Routing in spatial networks based on shortest path length
Authors: Lin Hong , Xia Yong-Xiang , Jiang Lu-Rong ,   School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China,   School of Information Science and Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China
Published: January 2022

In many complex networks, such as communication networks, power grids, and transportation networks, the main task is load transmission from sources to destinations. Therefore, the transmission throughput is a very important indicator to measure the network performance, and improving the throughput becomes one of the hotspots in the research of these complex networks. Many researchers have proposed different routing algorithms to improve the network throughput. However, few of them considered the spatial location of nodes in the network. Indeed, many real-world networks can be modeled by spatial networks, where the spatial location of nodes plays a vital role in determining the structure and dynamic behaviors of such networks. Specifically, when the locations of nodes are considered, each link has a length. And the shortest path may have different meaning. Traditionally, the shortest path indicates the path which passes the least number of links from source to destination, or the least number of hops. However, when the length of link is taken into account, the least number of links does not mean the least summation of link lengths along the path. The latter can be called the shortest path length. To this end, we proposes an efficient routing strategy for spatial networks based on the shortest path length in this work. In order to test the effectiveness of the algorithm, the network throughput \begin{document}${R}_{\rm c}$\end{document} is used, at which the network changes from a free flow state to a congestion state, to measure the performance of the network. Simulations of homogeneous and heterogeneous spatial networks show that compared with the traditional least number of hops routing strategy, the routing algorithm based on the shortest path length proposed in this paper can effectively improve the throughput of the network. The routing algorithm proposed in this paper can be applied to many real-world spatial networks for improving their performances.
Numerical simulation of single-event effects in fully-depleted silicon-on-insulator HfO2-based ferroelectric field-effect transistor memory cell
Authors: Shen Rui-Xiang , Zhang Hong , Song Hong-Jia , Hou Peng-Fei , Li Bo , Liao Min , Guo Hong-Xia , Wang Jin-Bin , Zhong Xiang-Li ,   Department of Material Science and Engineer, Xiangtan University, Xiangtan 411105, China,   Northwest Institute of Nuclear Technology, Xi’an 710024, China
Published: January 2022

Ferroelectric field-effect transistor (FeFET) memory is currently a popular non-volatile memory. It has many advantages such as nonvolatility, better scalability, energy-efficient switching with non-destructive read-out and anti-radiation. To promote the application of FeFET in radiation environments, the single-event transient effect in HfO2-based fully-depleted silicon-on-insulator (FDSOI) FeFET memory cell is studied by technology computer aided design (TCAD) numerical simulation. The effects of different incident positions and angles of heavy ions and the drain bias voltage on the characteristics of the memory cell are analyzed. The results show that the corresponding polarization state in the HfO2 ferroelectric layer will not reverse regardless of the change for the incident position of heavy ions, but the transient change of the output voltage for the memory cell will be affected. The most sensitive area is close to the drain-body junction area. Moreover, with the decrease of the ion incidence angle, the peak of output voltage for the memory cell increases. And the effect of the incident angle change is more obvious when reading data is “0” rather than “1”. The peak of output voltage for the memory cell is modulated by the drain bias voltage, and the modulation effect is more obvious when reading data is “1” rather than “0”. The above findings provide theoretical basis and guidance for the anti-single event design of the FDSOI FeFET memory cell.
Ultrafast carrier kinetics at surface and interface of Sb2Se3 film by transient reflectance
Authors: Huang Hao , Niu Ben , Tao Ting-Ting , Luo Shi-Ping , Wang Ying , Zhao Xiao-Hui , Wang Kai , Li Zhi-Qiang , Dang Wei ,   Hebei Key Laboratory of Optic-Electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
Published: January 2022

Antimony selenide (Sb2Se3) is a promising low-cost and environmentally-friendly semiconductor photovoltaic material. The power conversion efficiency of Sb2Se3 solar cells has been improved to \begin{document}$ \sim $\end{document}10% in the past few years. The carrier recombination transfer dynamics is significant factor that affects the efficiency of Sb2Se3 solar cells. In this work, carrier recombination on the Sb2Se3 surface and carrier transfer dynamics at the CdS/Sb2Se3 heterojunction interface are systematically investigated by surface transient reflectance. According to the evolution of relative reflectance change \begin{document}${{\Delta }{R}}/{{R}}$\end{document}, the carrier thermalization and band gap renormalization time of Sb2Se3 are determined to be in a range from 0.2 to 0.5 ps, and carrier cooling time is estimated to be about 3－4 ps. Our results also demonstrate that both free electron and shallow-trapped electron transfer occur at the Sb2Se3/CdS interface after photo excitation. Our results present a method of explaining the transient reflectance of Sb2Se3 and enhancing the understanding of carrier kinetics at Sb2Se3 surface and Sb2Se3/CdS interface.
Recent progress of quantum control in solid-state single-spin systems
Authors: Li Ting-Wei , Rong Xing , Du Jiang-Feng ,   CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China,   CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
Published: January 2022

In the field of quantum physics, quantum control is essential. Precise and efficient quantum control is a prerequisite for the experimental research using quantum systems, and it is also the basis for applications such as in quantum computing and quantum sensing. As a solid-state spin system, the nitrogen-vacancy (NV) center in diamond has a long coherence time at room temperature. It can be initialized and read out by optical methods, and can achieve universal quantum control through the microwave field and radio frequency fields. It is an excellent experimental platform for studying quantum physics. In this review, we introduce the recent results of quantum control in NV center and discuss the following parts: 1) the physical properties of the NV center and the realization method of quantum control, 2) the decoherence mechanism of the NV center spin qubit, and 3) the application of single-spin quantum control and relevant research progress.
Experimental study on prediction of nonlinear system based on causality test
Authors: Zhang Lü-Yi , Wang Ge-Li , Tan Gui-Rong , Wu Yue ,   Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China,   Guangzhou Institute of Tropical and Marine Meteorology, Guangzhou 510641, China,   Joint International Research Laboratory of Climate and Environment Change, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory of Meteorological Disaster, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China,   Sichuan Climate Center, Chengdu 610072, China
Published: January 2022

The prediction of nonlinear and non-stationary systems is a research topic of great scientific significance. In some recent work the convergent cross mapping (CCM) algorithm is used to detect the causal relationship between variables. In the CCM algorithm, the points close to each other in the phase space have similar trends and trajectories in time. Therefore, this method can be applied to the prediction of experimental researches of nonlinear and non-stationary systems. Therefore, in this paper the CCM algorithm is applied to the prediction of the Lorenz system and the actual climate time series, and the effects of different phase space reconstruction methods on the prediction skill are investigated. The preliminary results are as follows. 1) No matter whether the ideal Lorenz model or the actual climate series, of the three reconstruction phase space methods of univariate, multivariate, and multiview embedding method, the multiview embedding method is the best predictive skill, indicating that for a given length of time series, the more the information contained in the reconstructed phase space, the stronger its predictive ability is. 2) Adding the data of NAM (northern hemisphere annular mode) to the reconstructed phase space of SAT (surface air temperature) can improve the prediction effect on prediction of SAT. Using the univariable, multivariable, and multiview embedding method for implementing prediction, the characteristics of common information in the complex system are considered. On condition that the length of the time series is fixed, the complexity of the dynamic system can be used to increase the information of the system. Based on causality detection, through the extraction of quantitative information of data, a novel idea for the improvement of predictive skills in nonlinear and non-stationary systems can be obtained.
Teleportation of Werner state via graphene-based quantum channels under dephasing environment
Authors: Zhang Le , Yuan Xun-Feng , Tan Xiao-Dong ,   School of Electronic Information and Electrical Engineering, Shangluo University, Shangluo 726000, China
Published: January 2022

The teleportation of Werner state in the graphene-based quantum channels under the dephasing environment is studied through the effective low-energy theory in this paper. The results show that the output entanglement normally reaches a higher level as the input entanglement increases, while the performance of the corresponding fidelity is opposite. Given the input state, the greater entanglement in the quantum channel can provide the higher-quality output state. For graphene-based quantum channels, the low temperature and weak Coulomb repulsive potential can decelerate the attenuation of entanglement resources in the dephasing environment. Moreover, when the temperature is lower than 40 K and the coulomb repulsive potential between electrons is less than 6 eV, the average fidelity of the output state reaches more than 80%. These results indicate that graphene has potential applications in quantum information.
Reconstruction of Hadamard coded spectral data based on diffraction theory
Authors: Liu Wen-Long , Liu Xue-Bin , Wang Shuang , Yan Qiang-Qiang ,   CAS Key Laboratory of Spectral Imaging Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China,   University of Chinese Academy of Sciences, Beijing 100049, China
Published: January 2022

Hardmard transfer imaging spectrometer (HTIS) is a novel computationally optical system. Its characteristic of multi-channel multiplexing increases the luminous flux of the optical system without sacrificing spatial resolution, thereby enabling the system’s signal-to-noise ratio to be significantly higher than traditional spectrometer’s. Encoding with digital mirror devices (DMD) in the system causes a serious diffraction effect that gives rise to the apparent degradation of the imaging formation. For improving the image quality and spectral accuracy of the reconstructed data cube, the Hadamard coded spectral imaging data degradation model is established based on the scalar diffraction theory. A data reconstruction algorithm is proposed based on the Lucy Richardson (L-R) algorithm. Through the simulation experiment, the process of image degradation is revealed. On the one hand, it proves that the degradation of system imaging diffraction is the main reason for the distortion of reconstructed data. On the other hand, it verifies the effectiveness of the correction method adopted in this paper. The evaluation result of the spectral angle distance of the restored data cube after L-R correction is 0.1296, and the image similarity evaluation factor is better than 0.85. Compared with the reconstructed data before being corrected, the corrected data is greatly improved in quality. The experimental results show that the algorithm has a good correction effect on the data cube reconstruction of HTIS.