bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Collaborative Governance of Multiple Subjects of Air Pollution in Heilongjiang Province
Authors: Zheng Qing , Shi Ning , Liu Xiaoyu
Published: April 2021

In recent years,The economy of Heilongjiang province has developed rapidly, but the problem of air pollution, especially the haze in winter, is serious. In order to improve the ecological environment quality of Longjiang and promote high-quality economic development, the Heilongjiang provincial government has taken a series of key measures to prevent and control air pollution, and the air environment quality has been continuously improved. The prevention and control of air pollution requires the joint efforts of the government, enterprises and the public in order to win the battle against air pollution.
Emergy based sustainability evaluation for Shandong province, China
Authors: Liu Yanliang
Published: April 2021

With the development of urbanization, urban system has become the center of human habitation, business activities and economic growth in the world. With the influx of daring population into the city, human activities in the city will become more frequent, and the problems of environmental pollution and resource depletion will affect the sustainable development of the city. Therefore, this paper uses emergy theory of eco economic system to analyze the sustainability of urban metabolic process in Shandong province from 2008 to 2018. The results show that the total energy consumption of Shandong Province is gradually increasing from 1.85×1024 sej in 2008 to 3.48×1024 sej in 2018. However, the emergy sustainability indices show that the sustainability of Shandong province is gradually decreasing. This is mainly because the development of Shandong province depends on the development of local resources, which makes the economic development of the cities cause greater pressure on the natural environment.
Study on the Conservation Planning of Vernacular Landscape in Village Planning in the Context of Multi-regulation Integration——The Case of Changlong Village in Pinggui District, Hezhou City
Authors: Yang Shuaiqi , Wang Jinye
Published: April 2021

As one of the important concentrated manifestations of Chinese rural culture, vernacular landscape is related to the success or failure of new rural construction and village planning. How to protect the existing vernacular landscape in the practical village planning advocated by “multi-planning” and how to play the role of vernacular landscape in supporting development and protecting cultural heritage is one of the important tasks of village planning. This paper takes Changlong Village in Pinggui District, Hezhou City, Guangxi Province, as an example to explore and study the issue of planning the native landscape of Changlong Village in the multi-planning village planning, so as to provide technical support for the scientific protection and reasonable development and utilization of the native landscape for rural revitalization, and to provide reference and reference for the native landscape planning in the village planning of similar areas in China.
Design and analysis of a certain type of engineering environmental management information system
Authors: Lingdong Zeng , Peng Dong , Yujing Zhou
Published: April 2021

A certain type of engineering environmental management information system (referred to as the system) has been developed for many years, but there are not many construction cases. Domestic and foreign companies and enterprises have little research on this type of engineering system construction plan, and the knowledge base of historical experience and lessons is less. The design analysis of the engineering system construction scheme has practical significance and value. The system construction design adopts large-scale joint control technology to integrate all environmental protection subsystems into an organic whole, realize information sharing and collaborative work, realize remote monitoring and control of process equipment, and realize dynamic and online management of equipment information. Eventually, a certain type of engineering achieve the goals of intelligent control, unmanned duty, and controllable operation.
Facilitating the Guangdong-Hong Kong-Macao Greater Bay Area’s Participation in the Dual Circulation Economy
Authors: Yonghui Han , Jinghua Mai , Qing Li , Fan Zhang , Xiaofei Luo
Published: April 2021

The Sino-US conflicts and the COVID-19 have significantly impacted the Chinese economy and the Chinese government has proposed the “Dual Circulation Economy” strategy as countermeasure. As one of the most developed regions in China, the Guangdong -Hong Kong-Macao Greater Bay Area is expected to shoulder responsibilities in this ambition. In this paper, we analyze the challenges for the Greater Bay Area to participate from the perspective of industrial development. We then employ a quantitative method to identify the industrial potential of the Greater Bay Area cities in facilitating the dual circulation economy. At last, we provide several policy recommendations including promoting cross-regional industrial cooperation and enhancing the spatial spillover effects of core cities.
Clustering of Health and Wellness Tourists Based on Tourism Motivation
Authors: Ting Tao , Changyu Li , Changtai Lu , Kexin Cai , Zhiping Zheng , Linjun He
Published: April 2021

In this paper, exploratory factor analysis, cluster analysis and other methods are used to study the health and wellness tourists based on tourism motivation, the results showed that: (1) the motivation of health and wellness tourism can be divided into three push motives: knowledge and experience, social and health, exploration and reflection; three pull motives: food and cultural activities, supporting facilities and information, natural and interpersonal environment. (2) According to the motivation, there are four types of tourists: seeking knowledge and health and wellness, facility service and environmental experience, exploration and reflection, and nearby travel. (3) There are significant differences among the four different types of health and wellness tourists in age, education level, occupation and monthly income.
The forecast of the number of tourists received during the National Day period in Beijing under the background of epidemic in 2020
Authors: Yang Meng Ying , Liu Xin , Jia Hong Bin
Published: April 2021

COVID-19 suddenly outbreak not only pose a threat to people’s life and health, but also interfere with the development of national economy in our country. To investigate the outbreak of the impact of tourism, we choose Beijing as the aim of the research, using autoregressive model, Fourier series model and VAR model. Finally, according to the forecast results, we concluded that outbreak brought direct effects to the Beijing tourism, but with the outbreak under control, under the condition of government’s expansionary policies, tourism economy gradually back on track.
Research on the Image Perception of Shaoguan Tourism Food Based on Kelly Grid Technology
Authors: Yanfen Li
Published: April 2021

This study takes Shaoguan City, Guangdong Province as an example to study tourists’ perception of local tourist food image. The research method uses the Kelly grid technique. Through interviews with 24 tourists who have travelled to Shaoguan, 36 key constructs are obtained, and they are divided into cognitive and emotional constructs. Seven final representative constructs are presented. After sub-analysis, it was found that Shaoguan’s tourism food development is lagging behind, the food environment needs to be improved, and the lack of representative food in the city, etc., and proposed to establish representative tourism food, improve dietary hygiene awareness, and use the Internet to increase publicity and other optimization development suggestions.
Economic driving force: An Analysis of Rock Climbing Tourism in developed countries
Authors: Qianru Cui , Yuan Li
Published: April 2021

Rock climbing tourism has been valuable for the sustainable development of the rural outdoor economy in developed countries, which is one of the important trends of rock climbing development. The present study reviews the literature and performs comparative analysis to analyze the development status and experience characteristics of rock climbing tourism in developed countries. Research shows: In developed countries such as Britain, the United States, Germany, France, the climbing population continues to grow, and the rock climbing tourism industry has gradually become an important economic driving force to promote the development of rural and mountainous areas. By clarifying the main characteristics of developed countries in the development of rock climbing tourism, this paper aims to provide reference for the development of rock climbing tourism in developing countries and promote the sustainable development of rock climbing tourism industry.
Research On The Marketing Innovation Of “Live + Short Video” In The Culture And Tourism Industry In We Media Era
Authors: jun Guo
Published: April 2021

With the development of Internet technology and the popularity of 5G technology in mobile terminals, we media has entered the era of “short video + live broadcast” from the era of graphics and text on mobile terminals. The number of users of “live video + short video” app platform has reached 888 million, accounting for 94.5% of the total Internet users in China. In 2020, the sales revenue of all kinds of flat broadcast e-commerce will reach trillion, and cultural and tourism enterprises pay more and more attention to live broadcast We should pay dividends for the development of tourism enterprises, and carry out publicity and marketing of tourism routes and products. Tiktok and Kwai platform are taken as examples to analyze the problems the problems existing in the promotion of “live + short video” by cultural tourism enterprises. At the same time, it puts forward its own views on how to carry out the marketing innovation of “live + short video” in the cultural tourism industry of tourism cities.
Research on the relationships between destination image, perceived value and tourism experience of gastronomy tourism--A case of Macao Food Tourists
Authors: Lu Yan , Hu Yue
Published: April 2021

Gastronomy tourism, as a new tourism mode with special interest, can not only stimulate tourists’ interest in experiencing local traditional food, but also better meet tourists’ personalized experience needs, which is highly respected by the tourism market. Based on the research of scholars at home and abroad, this paper takes Macao food tourists as the research object to study the relationship among tourism experience, perceived value and destination image. The results show that the tourism experience of Macao food tourists has a significant positive impact on their perceived value and destination image, while the perceived value of tourists has a significant positive impact on their destination image. Based on the above research results, this paper puts forward several suggestions for the sustainable development of Macao’s gastronomy tourism and makes a little contribution to the development of Macao’s gastronomy tourism.
Impact of Knowledge Spillover on Regional Club Convergence in China
Authors: Tian Hui , Lei Fei , Huang Pudong , Huang Luoyi , Ye Liting , Lai Jiatian
Published: April 2021

Knowledge spillover theory introduces specialized knowledge and human capital accumulation into the production function, breaks through the limitations of traditional economic theory, and illustrates the continuous and permanent source and power of economic growth. This article attempts to study the “club phenomenon” of the uneven development of China’s regional economy from the perspective of knowledge spillover, using the Spatial Dubin Model (SDM) to process China’s provincial data from 1991 to 2015. Studies have shown that knowledge spillovers are conducive to narrowing the gap in the level of economic development between the eastern and central regions of China, but the gap in the level of economic development between the two regions is gradually widening, and there is a “club phenomenon”. Therefore, developing regional cooperation models and focusing on cultivating talents for innovation can improve China’s uneven regional economic development to a certain extent.
Reduce the occurrence of “road rage” and ensure the safety of self-driving travel passengers
Authors: Zhang Yujin
Published: April 2021

With the rapid growth of car ownership today, choosing self-driving travel has become the first choice for many people. At the same time, we should pay attention to the safety issues in the process of self-driving travel. The “road rage” emotions of self-driving drivers during the driving process pose a threat to the safety of the individual driver and the passengers in the car. Based on the traffic-oriented intelligent terminal and system platform, this article explores ways to reduce the emotion of “road rage” from the perspective of management and control. The methods discussed in this article can also help reduce environmental pollution and ensure travel safety.
Research on the cultivation of College Students’ intercultural communicative competence based on the technology of multimedia immersion in 5G Era
Authors: Zhang Yong
Published: April 2021

One belt, one road initiative, China needs comprehensive talents with international vision, international working background, international finance and international economic management. In order to improve college students’ intercultural communicative competence, China attaches importance to foreign cultural exchange and comprehensively improves the cultivation of foreign communicative competence. Students’ awareness of cross-cultural communication is weak and their communicative competence is lacking. In addition to enriching students’ cross-cultural communication ability, it is urgent to cultivate students’ comprehensive language competence. The rapid changes and development of economic globalization and information technology have promoted the frequent communication between different cultures. Such a development trend also puts forward higher requirements for the talent training of university teaching at this stage. The teaching of each university pays more attention to the application ability of language knowledge and the ability of international communication and communication in the future work and social communication. In the actual teaching process, due to the lack of practical communicative situations, most of the teaching still stay in the aspects of historical and cultural background, mode of thinking, pragmatic principles, values and social norms of different nationalities, and there are few opportunities to experience the coding and decoding in actual communication, and the related obstacles and misunderstandings in the process are even more difficult to understand. Therefore, cross-cultural practice should be placed on the same important position as the cognition of language and culture knowledge. Combined with the rapid development of network information technology, the creation of optimized teaching and practice integration paradigm has become the research and development trend of cultivating cross-cultural communication ability in today’s information society.
Intervention Research on Situational Emotion in Autism
Authors: Wang Ting , Li Yirong , Wang Jinwen
Published: April 2021

Situation emotion understanding is necessary for interpersonal communication and social interaction. Based on the situation of emotion understanding about autistic children literature at home and abroad, this article analyzed the characteristics of autism situational emotion intervention research, including the research object, research purpose, experimental design, data collection method, intervention method, intervention effect and so on. On this basis, some reflections and suggestions are put forward for the followup intervention.
Quality Evaluation of Wind Turbine Roller Bearing Profile in the Ultra-long Flexible Blade
Authors: Li Mingshu , Sun Yuhong , Wang Ling , Gao Zhiteng
Published: April 2021

In order to accurately measure and evaluate the quality of the roller profile of the ultra-long flexible blade bearing, an error evaluation model is established for the arc segment and the straight segment of the roller based on the least square method, and then an overall quality evaluation model is proposed based on these two error models. Through the simulation of a standard wind turbine cylindrical roller bearing, it is found that the quality evaluation model established in this work can effectively measure and evaluate the contour line of the wind turbine bearing’s roller. The overall absolute error is 0.0319 mm, which is consistent with the set random error. The overall quality evaluation model is also valid for other types of bearings commonly used in the wind turbine, which include arc and straight segments, and can be used to evaluate the error quality of the roller profile of wind turbine bearings.
Research Progress of Online Review Content Based on Interpretation Level Theory
Authors: Yaping Xu , Qingyu Liang
Published: April 2021

Online reviews have become the main method of information dissemination, an important factor in consumer purchase decisions, and an important basis for merchants to improve their services. It has attracted the attention of scholars. The application of explanation level theory in consumer behavior research has begun to show an increasing trend. After sorting out the existing literature, it is found that the online review literature based on the interpretation level theory mainly studies the impact on consumers’ purchase intention from the three perspectives of reviewers, review content and review readers. Among them, the content of comments is mostly discussed in terms of comment type and information quality, but it has not been systematically summarized. Using the literature review method, based on the interpretation level theory, the review type, information quality, interpretation type and perceived similarity are analyzed from the perspective of review content, and the existing literature is sorted in order to provide references for future research.
Liebe Leserin, lieber Leser,
Authors: Koch Uwe
Published: April 2021

In einer alternden Gesellschaft wie der unsrigen steigt die Zahl der jährlichen Neuerkrankungen an Krebs seit Jahren kontinuierlich. Aktuell erkranken pro Jahr 230 000 Frauen und 260 000 Männer neu. Für das Jahr 2025 werden 540 000 Erkrankungen prognostiziert.
Früh- und Spättoxizitäten sowie sozialmedizinisch-relevante Folgestörungen bei Brustkrebs-Patientinnen als Basis der Abschätzung des Reha-Bedarfes
Authors: Hass Holger G. , Seywald Marianne , Stepien Jürgen , Muco Blerta , Tanriverdi Miro , Beckmann Matthias W. , Kunzmann Volker , Wöckel Achim
Published: April 2021

Hintergrund Infolge der zunehmend individualisierten, multimodalen Therapie gibt es eine Vielzahl von potenziellen, therapieinduzierten Folgestörungen bei Mammakarzinom-Patientinnen. Die zunehmend verbesserte Langzeitprognose, das häufig junge Erkrankungsalter und die hohe Inzidenz der Erkrankung unterstreichen die Bedeutung dieser teils chronischen Nebenwirkungen für die berufliche und soziale Teilhabe.

Methoden Im Rahmen dieser retrospektiven Analyse wurden bei 8000 Brustkrebspatientinnen (Durchschnittsalter 55,7 ± 10,4J) klinische Parameter und therapieinduzierte Toxizitäten und Folgestörungen im zeitlichen Verlauf analysiert und mit Daten aus der Literatur verglichen.

Ergebnisse In 23,6% der Fälle wurde eine Mastektomie, in 89% eine Radiatio durchgeführt. Zudem erfolgte in den meisten eine zusätzliche systemische Therapie (57,6% CTX, 15,1% anti-Her2, 71% Antihormontherapie). In 8,1% lag ein Rezidiv bzw. eine metastasierte Erkrankung vor. Als häufigste Folgestörungen infolge der multimodalen Therapie ließen sich Kraftlosigkeit/Fatigue (73,6%), Schlafstörungen (51,9%), CIPN (33%), Lymphödeme (13,9%) und medikamentös-induzierte Arthralgien (24,8%) nachweisen. Zudem berichteten 60,4% der Frauen über einen hohen, psychischen Distress. Während kurz nach Akutbehandlung (AHB) signifikant häufiger CTX-induzierte Toxizitäten dokumentiert wurden (Leukopenie, p<0,0001; Anämie, p<0,001; Kraftlosigkeit/Fatigue p < 0,0001; CIPN, p<0,0001), ließ sich im Verlauf (REHA) häufiger ein chronisches Lymphödem (p<0,0001), eine chronische Erkrankungssituation (p<0,0001) sowie signifikant häufiger eine durchgeführte Ablatio (p<0,0001) und psychischer Distress (p<0,0001) nachweisen. Zudem zeigte sich ein jüngeres Alter (53,7±9,8 vs. 56,3±10,7J).

Diskussion Nach multimodaler Brustkrebstherapie lassen sich zwischen AHB- gegenüber Patientinnen im Regelheilverfahren teils signifikant unterschiedliche rehabilitationsrelevante Folgestörungen dokumentieren. Die Vielzahl und Vielfältigkeit somatischer sowie psychovegetativer Störungen unterstreichen die Notwendigkeit nach individualisierten, multimodalen Therapiekonzepten in der onkologischen Rehabilitation.
Integrative Treatment of Lung Cancer Patients: Observational Study of 57 Cases
Authors: Anelli Lorenzo , Di Nardo Alessia , Bonucci Massimo
Published: April 2021

Introduction A retrospective clinical study was performed to identify the characteristics of patients with lung cancer treated with integrative cancer treatment in addition to conventional medicine.

Materials and Methods We reviewed medical records for lung cancer patients who visited a single integrative setting in Rome, Italy. A total of 57 patients were included, and the majority had advanced-stage cancer. All of them underwent integrative therapy with nutrition and phytotherapy indications. The diet was designed to reduce most of possible factors promoting cancer proliferation, inflammation, and obesity. Foods with anti-inflammatory, prebiotic, antioxidant, and anticancer properties had been chosen. Herbal supplements with known effects on lung cancer were prescribed. In particular, astragal, apigenine, fucosterol, polydatin, epigallocatechin gallate, cannabis, curcumin, and inositol were used. Furthermore, medical mushrooms and other substances were used to improve the immune system and to reduce chemotherapy side effects. Five key parameters have been evaluated for 2 years starting at the first surgery: nutritional status, immune status, discontinuation of therapy, quality of life, and prognosis of the disease.

Results A relevant improvement in parameters relative to nutritional status, immune status, and quality of life has been observed after integrative therapy compared with the same parameters at the first medical visit before starting such approach.

Conclusion The results suggest that integrative therapy may have benefits in patients with lung cancer. Even though there are limitations, the study suggests that integrative therapy could improve nutritional status and quality of life, with possible positive effect on overall survival.
Interventional Radiology in Renal Trauma
Authors: Lopez-Gonzalez Diego B. , Zurkiya Omar
Published: April 2021

Traumatic injuries to the kidney and collecting system can range widely from small lacerations to significant bleeding and its sequelae. Urinary obstruction can occur in the renal pelvis, ureters, or urethra. Interventional radiology plays a significant role in treatment and management, in many cases requiring emergent action. Endovascular embolization is frequently the first-line approach to treating hemorrhage. Percutaneous interventions for urinary obstruction include nephrostomy and suprapubic catheter placement. In this article, we outline the clinical approach and interventional methods used in the evaluation and treatment of renal trauma. Several case presentations demonstrate the role of interventional radiology in renal trauma.
Analysis of Basal Cell Carcinoma and Squamous Cell Carcinoma according to Nasal Subunit Location
Authors: Derebaşınlıoğlu Handan , Özkaya Neşe Kurt
Published: April 2021

The nose is highly vulnerable to skin cancers due to the unavoidable sun exposure. The most common localization of skin cancers on the face is nose. Although the nose appears to be a single structure, it comprises many aesthetic units with different histological and anatomical properties. Our aim was to determine the relationship between the prevalence of basal cell carcinoma (BCC) and squamous cell carcinoma (SCC), histologically and anatomically distinct nasal subunits. The study included patients who underwent excision and repair due to BCC or SCC of the nose. The lesions were classified according to their location in the following topographic subunits: tip, alar lobule, dorsum, sidewall, and medial canthal region. Patients were analyzed according to age, sex, topographic subunit, tumor type, and repair technique. There was no statistically significant difference in tumor location according to etiology (p > 0.05). The alar subunit was the most common location of BCC, while the dorsum was the most common location for SCC. There is no statistical relationship between the two most common skin cancers, BCC and SCC, and the aesthetic subunits of the nose. The only factor associated with the reconstruction method used was the subunit in which the tumor was located.
Bioabsorbable Implant for Treatment of Nasal Valve Collapse with or without Concomitant Procedures
Authors: Sidle Douglas M. , Stolovitzky Pablo , O'Malley Ellen M. , Ow Randall A. , Nachlas Nathan E. , Silvers Stacey
Published: April 2021

The aim of the study is to report outcomes after treatment of nasal valve collapse with a bioabsorbable nasal implant. It involves two prospective, multicenter, post-market studies evaluating long-term effectiveness of the LATERA implant for severe to extreme nasal obstruction. Participants underwent implant alone or with concomitant inferior turbinate reduction (ITR) and/or septoplasty. Outcome measures included the change from baseline Nasal Obstruction Symptom Evaluation (NOSE) scores, NOSE responder rates, visual analog scale (VAS) scores, and adverse events. A total cohort of 277 participants (109 implants only, 67 implants + ITR, 101 implants + septoplasty + ITR) enrolled at 19 U.S. centers was available for analysis with 177 participants (69 implants only, 39 implants + ITR, 69 implants + septoplasty + ITR) available at 2 years. The mean changes from baseline in NOSE scores and VAS scores were statistically significant (p < 0.001) at all follow-up periods. The baseline NOSE score of 77.8 ± 13.6 was improved to 24.2 ± 23.6 at 24 months. Greater than 90% of participants were NOSE responders across all follow-up periods, 6.1% withdrew for lack of treatment effect. The baseline VAS score of 66.7 ± 18.8 was improved to 21.1 ± 23.9 at 24 months. There were no serious adverse events related to the device or implant procedure. Implant retrieval rate was 4.0% (22/543 implants). Nonserious adverse events were mild to moderate in severity, typically occurred within 6 months of implant, and resolved or were stable. Significant reductions in NOSE and VAS scores and high responder rates from our large population of patients with nasal obstruction who had nasal valve implants confirm sustained effectiveness at 24 months after treatment. The studies are registered on www.clinicaltrials.gov (NCT02952313 and NCT02964312).
Finite-element simulation of photoinduced strain dynamics in silicon thin plates
Authors: Nakamura A. , Shimojima T. , Ishizaka K.
Published: April 2021

In this paper, we investigate the femtosecond-optical-pulse-induced strain dynamics in relatively thin (100 nm) and thick (10 000 nm) silicon plates based on finite-element simulations. In the thin sample, almost spatially homogeneous excitation by the optical pulse predominantly generates a standing wave of the lowest-order acoustic resonance mode along the out-of-plane direction. At the same time, laterally propagating plate waves are emitted at the sample edge through the open edge deformation. Fourier transformation analysis reveals that the plate waves in the thin sample are mainly composed of two symmetric Lamb waves, reflecting the spatially uniform photoexcitation. In the thick sample, on the other hand, only the near surface region is photo-excited and thus a strain pulse that propagates along the out-of-plane direction is generated, accompanying the laterally propagating pulse-like strain dynamics through the edge deformation. These lateral strain pulses consist of multiple Lamb waves, including asymmetric and higher-order symmetric modes. Our simulations quantitatively demonstrate the out-of-plane and in-plane photoinduced strain dynamics in realistic silicon plates, ranging from the plate wave form to pulse trains, depending on material parameters such as sample thickness, optical penetration depth, and sound velocity.
The magnet system of the Space Plasma Environment Research Facility (SPERF): Parameter design and electromagnetic analysis
Authors: E Peng , Ling Wenbin , Mao Aohua , Jin Chenggang , Xiao Qingmei , Xu Fengyu , Chen Chunxi , Bai Xiangchun , Hao Huiping , Lu Yaowen , Xu Yongxing , Zhu Guangliang , Weng Xudong , Lin Bing
Published: April 2021

A magnet system is used in the SPERF to create the magnetic field configuration for simulating the space plasma environment. In this paper, the parameters of the system are designed to achieve the target fields needed by the scaling laws, and the electromagnetic analysis has been performed to validate the results. A procedure to obtain the parameters is proposed based on the investigation into the physical and technological constraints. The vacuum magnetic fields for studying the 3D magnetic reconnection at the magnetopause, Earth’s magnetosphere, and 3D magnetic reconnection driven by a plasma gun are computed. In addition, the engineering complexity is reviewed in brief. This research is crucial to the construction of the SPERF, and it is valuable to designing the magnets applied in other fields.
A 2D hyperchaotic map with conditional symmetry and attractor growth
Authors: Kong Sixiao , Li Chunbiao , Jiang Haibo , Lai Qiang , Jiang Xiaowei
Published: April 2021

By introducing trigonometric functions, a 2D hyperchaotic map with conditional symmetric attractors is constructed, where a symmetric pair of hyperchaotic attractors and asymmetric hyperchaotic attractors is found. For the existence of periodic feedback, the newly proposed map also exhibits attractor growth under specific circumstances. The polarity balance of the discrete map can be restored from the applied sinusoidal functions, combined with an extra inversion of the constant term. To the best of our knowledge, the above properties are not found in other chaotic maps. Finally, the hardware implementation based on STM32 is conducted, and the corresponding results agree with the numerical simulation and the theoretical analysis.
Three dimensional low-mode areal-density non-uniformities in indirect-drive implosions at the National Ignition Facility
Authors: Casey D. T. , Landen O. L. , Hartouni E. , Bionta R. M. , Hahn K. D. , Volegov P. L. , Fittinghoff D. N. , Geppert-Kleinrath V. , Wilde C. H. , Milovich J. L. , Smalyuk V. A. , Field J. E. , Hurricane O. A. , Zylstra A. B. , Kritcher A. L. , Clark D. S. , Young C. V. , Nora R. C. , Callahan D. A. , MacGowan B. J. , Munro D. H. , Spears B. K. , Peterson J. L. , Gaffney J. A. , Humbird K. D. , Kruse M. K. G. , Moore A. S. , Schlossberg D. J. , Gatu-Johnson M. , Frenje J. A.
Published: April 2021

To achieve hotspot ignition, an inertial confinement fusion implosion must achieve high hotspot pressure that is inertially confined by a dense shell of DT fuel. This requires a symmetric implosion having high in-flight shell velocity and high areal density at stagnation. The size of the driver and scale of the capsule required can be minimized by maintaining a high efficiency of energy coupling from the imploding shell to the hotspot. Significant 3D low mode asymmetries, however, are commonly observed in indirect-drive implosions and reduce the coupling of shell kinetic energy to the hotspot. To better quantify the magnitudes and impacts of shell density asymmetries, we have developed new analysis techniques and analytic models [Hurricane et al., Phys. Plasmas 27(6), 062704 (2020)]. To build confidence in the underlying data, we have also developed an analytic neutron transport model to cross-compare two independent measurements of asymmetry, which shows excellent agreement across shots for mode-1 (ℓ = 1). This work also demonstrates that asymmetry can introduce potential sampling bias into down-scattered ratio measurements causing the solid-angle-average and uncertainty-weighted-average down-scattered ratios to differ significantly. Diagnosing asymmetries beyond mode-1 (ℓ > 1) presents significant challenges. Using new diagnostic instruments and analysis techniques, however, evidence of significant Legendre mode P2 (ℓ = 2, m = 0) and additional 3D asymmetries (ℓ > 1, m ≠ 0) are beginning to emerge from the high precision activation diagnostic data (real-time nuclear activation detectors) and down-scattered neutron imaging data.
Timing characterization of fast hCMOS sensors
Authors: Benedetti L. R. , Palmer N. E. , Hurd E. R. , Durand C. E. , Carpenter A. C. , Dayton M. S. , Golick B. , Holder J. P. , Trosseille C. , Werellapatha K. , Gorman M. G.
Published: April 2021

We describe a method of analyzing gate profile data for ultrafast x-ray imagers that allows pixel-by-pixel determination of temporal sensitivity in the presence of substantial background oscillations. With this method, systematic timing errors in gate width and gate arrival time of up to 1 ns (in a 2 ns wide gate) can be removed. In-sensor variations in gate arrival and gate width are observed, with variations in each up to 0.5 ns. This method can be used to estimate the coarse timing of the sensor, even if errors up to several ns are present.
Effect of electric field and vertical strain on the electro-optical properties of the MoSi2N4 bilayer: A first-principles calculation
Authors: Bafekry A. , Stampfl C. , Naseri M. , Fadlallah Mohamed M. , Faraji M. , Ghergherehchi M. , Gogova D. , Feghhi S. A. H.
Published: April 2021

Recently, a two-dimensional (2D) MoSi2N4 (MSN) structure has been successfully synthesized [Hong et al., Science 369(6504), 670–674 (2020)]. Motivated by this result, we investigate the structural, electronic, and optical properties of MSN monolayer (MSN-1L) and bilayer (MSN-2L) under the applied electric field (E-field) and strain using density functional theory calculations. We find that the MSN-2L is a semiconductor with an indirect bandgap of 1.60 (1.80) eV using Perdew–Burke–Ernzerhof (HSE06). The bandgap of MSN-2L decreases as the E-field increases from 0.1 to 0.6 V/Å  and for larger E-field up to 1.0 V/Å  the bilayer becomes metallic. As the vertical strain increases, the bandgap decreases; more interestingly, a semiconductor to a metal phase transition is observed at a strain of 12%. Furthermore, the optical response of the MSN-2L is in the ultraviolet (UV) region of the electromagnetic spectrum. The absorption edge exhibits a blue shift by applying an E-field or a vertical compressive strain. The obtained interesting properties suggest MSN-2L as a promising material in electro-mechanical and UV opto-mechanical devices.
Ultrafast hole transfer from monolayer ReS2 to thin-film F8ZnPc
Authors: Valencia-Acuna Pavel , Kafle Tika R. , Zereshki Peymon , Peelaers Hartwin , Chan Wai-Lun , Zhao Hui
Published: April 2021

We report a combined experimental and computational study on the charge transfer properties of heterostructures formed by monolayer 1T′-ReS2 and fluorinated zinc phthalocyanine, F8ZnPc. Two-dimensional (2D) ReS2 monolayer flakes were exfoliated from bulk crystals, and an F8ZnPc film with a thickness of 4 nm was thermally deposited on ReS2. Density functional theory shows that the two materials form a type-II band alignment. In transient absorption measurements, photocarriers are selectively excited in ReS2 and monitored in F8ZnPc. We found that holes in ReS2 can transfer to F8ZnPc on a timescale shorter than 0.35 ps. The transferred holes have a long lifetime in F8ZnPc on the order of 1 ns, confirming the lack of electron transfer. The efficient charge transfer from a 1T′ transition metal dichalcogenide monolayer to an organic semiconductor illustrates the feasibility of developing 2D/organic heterostructures with in-plane anisotropic electronic and optoelectronic properties.
Measurement of direct and indirect bandgaps in synthetic ultrathin MoS2 and WS2 films from photoconductivity spectra
Authors: Shlyakhov I. , Iakoubovskii K. , Banerjee S. , Gaur A. , Lin D. , Asselberghs I. , Radu I. , Chai J. , Yang M. , Wang S. J. , Houssa M. , Stesmans A. , Afanas’ev V.
Published: April 2021

Exploring the thickness-dependent electronic properties of ultrathin transition metal dichalcogenides is crucial for novel optoelectronic devices. Particularly important is experimental information regarding the bandgap width. This information is scarce and often inconsistent among the several measurement techniques that were employed for this task, such as optical absorption, scanning tunneling spectroscopy, and photoconductivity. Here, we present photoconductivity measurements in large-area synthetic MoS2 and WS2 films (one to five monolayers and the bulk crystal) grown on insulating layers (SiO2, Al2O3, or HfO2). The excitonic peaks of MoS2 and WS2 were detected in both the photocapacitor and traditional in-plane geometries. Their contribution to the photoconductivity is explained by the electric field-assisted dissociation mechanism. We have separated the excitonic and free carrier components in the photocurrent spectra and extracted the direct and indirect bandgaps using the Tauc plot, revealing their dependencies on the number of monolayers.
Modeling the deformation of a surfactant-covered droplet under the combined influence of electric field and shear flow
Authors: Zhang Jinggang , Liu Haihu , Zhang Xitong
Published: April 2021

A surfactant-covered droplet subject to both electric field and shear flow is studied using a lattice Boltzmann and finite difference hybrid method, which breaks the limitation of asymptotic approaches that allow only small droplet deformation. It is found that in the electric system where electric field induces circulating flows directed from equator to poles, the presence of surfactants promotes droplet deformation for each electric capillary number (CaE), whereas in the electric system where droplets exhibit a prolate shape and circulating flows are directed from poles to equator, the presence of surfactants hinders droplet deformation at high CaE. We also for the first time show that in the electric system where droplet exhibits an oblate shape, the presence of surfactants almost has no effect on droplet deformation at high CaE. Regardless of electric properties and CaE, the inclination angle of surfactant-covered droplets is always smaller than that of clean droplets.
A complement factor H homolog, heparan sulfation, and syndecan maintain inversin compartment boundaries in
C. elegans
cilia
Authors: Acker Natalie , Smith Harold , Devine Claire , Oltjen Sharon L. , Tsiropoulou Sofia , Smit-McBride Zeljka , Lange Karen , Blacque Oliver E. , Matsubara Joanne A. , Gordus Andrew , Golden Andy , Vogel Bruce E.
Published: April 2021

Significance

Mutations in complement factor H (CFH) binding sites for heparan sulfate (HS) increase risk for age-related macular degeneration (AMD), but the roles of CFH and HS in disease pathogenesis remain unclear. Here, we find that a CFH homolog, HS modification, and the HS proteoglycan syndecan/SDN-1 have roles in maintaining cilia compartment boundaries in the sensory neurons of aging
C. elegans
adults. The role of CFH in cilia compartment boundaries is conserved in vertebrate photoreceptors, suggesting that structural defects in photoreceptor cilia make a contribution to AMD progression in patients with CFH mutations that has not been appreciated previously.
Factors Associated with Primary Health Care Providers’ Alcohol Screening Behavior in Colombia, Mexico and Peru
Authors: Kokole Daša , Jané-Llopis Eva , Mercken Liesbeth , Piazza Marina , Bustamante Ines , Natera Rey Guillermina , Medina Perla , Pérez-Gómez Augusto , Mejía-Trujillo Juliana , O'Donnell Amy , Kaner Eileen , Gual Antoni , Schmidt Christiane Sybille , Schulte Bernd , Candel Math J. J. M. , de Vries Hein , Anderson Peter
Published: April 2021

Background

Screening for unhealthy alcohol use in routine consultations can aid primary health care (PHC) providers in detecting patients with hazardous or harmful consumption and providing them with appropriate care. As part of larger trial testing strategies to improve implementation of alcohol screening in PHC, this study investigated the motivational (role security, therapeutic commitment, self-efficacy) and organizational context (leadership, work culture, resources, monitoring, community engagement) factors that were associated with the proportion of adult patients screened with AUDIT-C by PHC providers in Colombia, Mexico and Peru. Additionally, the study investigated whether the effect of the factors interacted with implementation strategies and the country.

Methods

Pen-and-paper questionnaires were completed by 386 providers at the start of their study participation (79% female, Mage = 39.5, 37.6% doctors, 15.0% nurses, 9.6% psychologists, 37.8% other professional roles). They were allocated to one of four intervention arms: control group; short training only; short training in presence of municipal support; and standard (long) training in presence of municipal support. Providers documented their screening practice during the five-month implementation period. Data were collected between April 2019 and March 2020.

Results

Negative binomial regression analysis found an inverse relationship of role security with the proportion of screened patients. Self-efficacy was associated with an increase in the proportion of screened patients only amongst Mexican providers. Support from leadership (formal leader in organization) was the only significant organizational context factor, but only in non-control arms.

Conclusion

Higher self-efficacy is a relevant factor in settings where screening practice is already ongoing. Leadership support can enhance effects of implementation strategies.
The role of radiation protection societies in tackling the skills shortage and development of young professionals and researchers
Authors: Bryant Peter A
Published: April 2021

Over the last 10 years there have been increasing concerns raised about a potential skills gap in the field of radiation protection (RP). Noting these concerns in 2019, the Society for Radiological Protection, the UK’s Chartered Professional Body, launched a study to determine the RP demand in the UK going forward along with the capacity of the profession. The initial results show that over 50% of the SRP membership retires in the next 10−15 years, coupled with an increase in RP demand across the nuclear fuel cycle, medical sector and advancement of new technologies or applications requiring RP advice. This provides strong evidence supporting the concerns of a future skills gap. This paper presents a framework highlighting three core objectives that need to be met to resolve the skills gap. A review of the existing initiatives being undertaken by the Society of Radiological Protection to meet these objectives is included, identifying both areas of good practice and areas for further work and development. A key theme in tackling this challenge has been identified as the need to foster greater collaboration between RP professionals, and organizations both within the UK and abroad, such as IRPA, national societies, employers, academia and industry. This brings a unique opportunity to direct efforts and resources toward a common goal, allowing the sharing of good practice, whilst reducing the strain and burden on any one organization. Another key output of the review was the need to embrace new and innovative solutions to developing our profession and importantly inspiring and communicating into the future of the profession.
The effect of gas flow rate on structural, mechanical and antibacterial properties of atmospheric plasma sprayed Cu coatings
Authors: Goudarzi Masoumeh , Ghaziasadi Hassan
Published: April 2021

The Copper (Cu) powder is sprayed on 316L stainless steel surface using an atmospheric plasma spray (APS) system to eliminate infections and bacteria on the surface. Here, the effects of gas flow rate (GFR) on structural, mechanical and antibacterial properties of coatings are investigated. The comparative analysis of coatings created by different gas flow rates of 20, 25, 30 and 35 lmin−1 is performed. The results show that the coating with 20 lmin−1 GFR is thin and too weak due to the disturbance in the thermal pinch and the existing excessive pores. With increasing the GFR, the coating roughness and porosity decrease which in turn increases the hardness and adhesion of the coatings. The connection between flat splats and continuous and uniform layers gets better. The high-quality coating is seen at the GFR of 30 lmin−1 with the adhesion strength and hardness of 4B and 163 HV0.1, respectively. Besides, it shows three and a half and three times increase of antibacterial property after 12 h compared to 316L stainless steel versus PTCC 1112 Staphylococcus aureus and ATCC 10536 Escherichia coli bacteria, respectively. But the coating having a GFR higher than critical value (30 lmin−1) shows discontinuous layers due to the plasma jet divergence and reduction of particles velocity.
Understanding sequence effect in DNA bending elasticity by molecular dynamic simulations
Authors: Qiang Xiao-Wei , Dong Hai-Long , Xiong Kai-Xin , Zhang Wenbing , Tan Zhi-Jie
Published: April 2021

Structural elasticity of double-strand DNAs is very important for their biological functions such as DNA-ligand binding and DNA-protein recognition. By all-atom molecular dynamics simulations, we investigated the bending elasticity of DNA with three typical sequences including poly(A)-poly(T) (AA-TT), poly(AT)-poly(TA) (AT-TA), and a generic sequence (GENE). Our calculations indicate that, AA-TT has an apparently larger bending persistence length (P ∼63 nm) than GENE (P ∼49 nm) and AT-TA (P ∼48 nm) while the persistence length of AT-TA is only very slightly smaller than that of GENE, which agrees well with those from existing works. Moreover, through extensive electrostatic calculations, we found that the sequence-dependent bending elasticity is attributed to the sequence-dependent electrostatic bending energy for AA-TT, AT-TA and GENE, which is coupled to their backbone structures. Particularly, the apparently stronger bending stiffness of AA-TT is attributed to its narrower minor groove. Interestingly, for the three DNAs, we predicted the non-electrostatic persistence length of ∼17 nm, thus electrostatic interaction makes the major contribution to DNA bending elasticity. The mechanism of electrostatic energy dominating sequence effect in DNA bending elasticity is furtherly illustrated through the electrostatic calculations for a grooved coarse-grained DNA model where minor groove width and other microscopic structural parameters can be artificially adjusted.
Same-Sign Dilepton Signature in the Inert Doublet Model *
Authors: Yang Fa-Xin , Han Zhi-Long , Jin Yi
Published: April 2021

In this study, we perform a detailed analysis on the same-sign dilepton signature in the inert doublet model. Focusing on the low dark matter mass region, we randomly scan the corresponding parameter space. Viable samples allowed by various constraints are obtained, and among them are twenty benchmark points that are selected for further study on collider signature. At hadron colliders, the same-sign dilepton signature is produced via

with the leptonic decay mode

, where H represents the dark matter candidate. We investigate the testability of this signal at the high-luminosity LHC (HL-LHC) and the proposed 27 TeV high-energy LHC (HE-LHC). According to our simulation, the HL-LHC with

can barely probe this signal. Meanwhile, for the HE-LHC with

, it is promising to obtain a

significance when

GeV with dark matter mass

or 71 GeV.