bluuebunny/crossref_metadata_2025 huggingface dataset:
Energy storage optimization of ferroelectric ceramics during phase-transition process of amorphous/nanocrystalline and polycrystalline by using a phase-field model for dielectric breakdown
Authors: Huang Suilong , Chen Jianwen , Su Zhen , Wang Xiucai , Zhu Wenbo , Chen Wenjun , Yu Xinmei , Xiao Peng
Published: September 2022

Ferroelectric ceramics have the potential to be widely applied in the modern industry and military power systems due to their ultrafast charging/discharging speed and high energy density. Considering the structural design and electrical properties of ferroelectric capacitor, it is still a challenge to find out the optimal energy storage of ferroelectric ceramics during the phase-transition process of amorphous/nanocrystalline and polycrystalline. In this work, a finite element model suitable for the multiphase ceramic system is constructed based on the phase field breakdown theory. The nonlinear coupling relationship of multiple physical fields between multiphase ceramics was taken into account in this model. The basic structures of multiphase ceramics are generated by using the Voronoi diagram construction method. The specified structure of multiphase ceramics in the phase-transition process of amorphous/nanocrystalline and polycrystalline was further obtained through the grain boundary diffusion equation. The simulation results show that the multiphase ceramics have an optimal energy storage in the process of amorphous polycrystalline transformation, and the energy storage density reaches the maximum when the crystallinity is 13.96% and the volume fraction of grain is 2.08%. It provides a research plan and idea for revealing the correlation between microstructure and breakdown characteristics of multiphase ceramics. This simulation model realizes the nonlinear coupling of the multiphase ceramic mesoscopic structure and the phase field breakdown. It provides a reference scheme for the structural design and performance optimization of ferroelectric ceramics.
Vested Authorities, Emergent Brokers and User Archivists: Power and Legitimacy in Information Provision
Authors: Hoekstra Rik , Koolen Marijn , van Faassen Marijke
Published: September 2022

The past decades have changed the way we deal with archives and archival materials. Archives digitised their inventories and part of their collections, but they were joined by many other parties who published archival collections and archive-worthy materials on the web. The information world is in continuous flux, and the developments have made clear that archives and libraries have lost much of their position as the vested authorities of information access. They are challenged by technological parties and citizen science that have as yet not established themselves in definitive positions as information brokers. We propose to analyse the field in terms of information authority, a composite of many different aspects that all contribute to its importance, availability and use. In this article, we first explore the issue of (information) authority in the digital realm, and explain why we choose a conflict metaphor to analyse the different types of partners in the information ecosystem. Digital archives call for cooperation and openness as information is ‘everywhere’, but this is hard to realise as it requires translating intentions into technical means. To maintain their position of authority, archives adopt standards and regulations. We argue that openness is the key, but hard to organise with the existing standards because they are used in monolithic ways that make it hard to combine information. Combining asks for methods from established scholarly and archival disciplines as well as from technology. Furthermore, sharing and cooperation require a harmonisation of contexts: the different contexts in which information is created and organised need to be aligned to understand how collections can be combined across different dimensions. This calls for providing (structured) metadata that define the scope of a collection, to allow one to determine whether combining information is useful. At the moment, the state of affairs is in flux and there is no fixed methodology. In the last part, we explore ways to facilitate and evaluate interdisciplinary communication and collaboration on methodology to address the preceding challenges of producing quality, in all realms.
Don’t Miss Weak Packets: Boosting LoRa Reception with Antenna Diversities
Authors: Hou Ningning , Xia Xianjin , Zheng Yuanqing
Published: September 2022

LoRa technology promises to connect billions of battery-powered devices over a long range for years. However, recent studies and industrial deployment find that LoRa suffers severe signal attenuation because of signal blockage in smart cities and long communication ranges in smart agriculture applications. As a result, weak LoRa packets cannot be correctly demodulated or even be detected in practice. To address this problem, this paper presents the design and implementation of MALoRa: a new LoRa reception scheme which aims to improve LoRa reception performance with antenna diversities. At a high level, MALoRa improves signal strength by reliably detecting and coherently combining weak signals received by multiple antennas of a gateway. MALoRa addresses a series of practical challenges, including reliable packet detection, symbol edge extraction, and phase-aligned constructive combining of weak signals. Moreover, MALoRa can also be applied to mobile devices. Experiment results show that MALoRa can effectively expand communication range, increase battery life of LoRa devices, and improve packet detection and demodulation performance especially in ultra-low SNR scenarios.
Partial Extraction Therapy with Early Implant Placement in the Esthetic Zone: A Clinical Case Report
Authors: Almohammed Saleh N. , Abdel-Hafez Reem S. , Ailabouni Duaa D.
Published: September 2022

Immediate replacement of teeth designated for extraction is an appealing treatment rationale for both the patient and the operator. However, it has been associated with a greater risk of facial recession and compromised soft-tissue esthetics. Partial extraction therapy (PET) or synonymously socket shield technique (SST) or root membrane technique (RMT) has been proposed to conserve the facial alveolar contour and soft-tissue esthetics. In this article, a special case is described where a root membrane was used to prevent the modeling of the facial aspect of the extraction socket. Partial extraction was performed allowing the socket with the facial root membrane in situ to partially heal for 8 weeks before implant placement. Successful integration and restoration were achieved with very minimal hard- and soft-tissue changes, accentuating satisfactory esthetic results as dictated by objective esthetic assessment. PET with early implant placement may be considered a viable treatment option for selected cases.
COVID-19 Preventive Measure: A Study on “MASK-A Boon or a Bane”
Authors: Amin Revati , Ghosh Dastidar Ranita , K Vaishali
Published: September 2022

Background. Mask wearing can restrict the spread of respiratory viral transmission during the third wave of the COVID-19 pandemic. Globally, governments have emphasized its use in workplaces and public areas to prevent the transmission routes of corona virus. In spite of the current awareness in the general population, the stringency of wearing the mask lies as an individual’s choices. Subject and Methods. This research work discusses available studies on the types and comparison of masks in the market for use. It includes a short survey conducted with 1,173 anonymized healthy participants primarily devoid of comorbidities. The survey includes the effects of mask wearing, while outdoor with minimal activities like walking and with mild activities like jogging and stretching. Our research further discusses various health effects of wearing a mask, including cardiac output, hypoxemia, hypoxia, and dyspnoea, and how such situations that pose a threat can be consciously avoided. Results. It was found that the majority of people use cloth/fabric reusable mask. There remains scope for better-designed masks and improving health in the mass population by inculcating healthy breathing habits and other relevant exercises that can help people cope up better in this fight against the deadly virus at a larger scale. Conclusion. For most of the survey questions, there was significant correlation between gender and the related responses as there was no significantly observable difference in the nonparametric, unpaired analyses of responses. The main objective of this research work is to initiate more discussions and enhance awareness in natural ways of staying healthy during the pandemic emphasizing mask use. Further progress in this aspect remains a whole new area for future exploration.
Sappanone A Alleviated IL-1β-Induced Inflammation in OA Chondrocytes through Modulating the NF-κB and Nrf2/HO-1 Pathways
Authors: Zhang Zhi , Zhang Nan-Zhi , Li Meng , Zhang Dang-Feng , Ma Xing , Zhou Shuang-Li , Qiu Yu-Sheng
Published: September 2022

Objective. This study was to examine the anti-inflammatory effect of sappanone A on interleukin- (IL-) 1β-stimulated osteoarthritis (OA) chondrocytes. Methods. Chondrocytes were pretreated with sappanone A for 2 h before subsequent IL-1β stimulation. The mRNA expression levels of iNOs, COX-2, aggrecan, and collagen-II were measured with qRT-PCR. The levels of TNF-α, IL-6, IL-8, MMP-3, and MMP-13 were determined by ELISA. The protein levels of iNOs, COX-2, ADAMTS-4, ADAMTS-5, aggrecan, collagen-II, p-p65, p65, IκBα, Nrf2, and HO-1 were assessed by Western blot. Results. Sappanone A inhibited the IL-1β-stimulated production of NO, PGE2, iNOS, COX-2, TNF-α, IL-6, and IL-8 in OA chondrocytes. In addition, sappanone A suppressed the expression of MMP-3, MMP-13, ADAMTS-4, and ADAMTS-5 in IL-1β-stimulated OA chondrocytes. The degradation of ECM components was reversed by sappanone A. Sappanone A prevented NF-κB activation while enhanced Nrf2/HO-1 activation in IL-1β-treated chondrocytes. Conclusion. Sappanone A may be a potent therapeutic agent for OA.
The Effect of Time-Restricted Eating on Insulin Levels and Insulin Sensitivity in Patients with Polycystic Ovarian Syndrome: A Systematic Review
Authors: Floyd R. , Gryson R. , Mockler D. , Gibney J. , Duggan S. N. , Behan L. A.
Published: September 2022

Background & Objective. Polycystic ovarian syndrome (PCOS) is the most common reproductive endocrinopathy in women of reproductive age with many associated metabolic symptoms, in particular hyperinsulinemia, insulin resistance, and a high lifetime risk of type 2 diabetes mellitus. The effects of time-restricted eating on metabolic profiles have been investigated in many endocrinopathies, but there is minimal data for PCOS. Here we explore the potential role of time-restricted eating in the nonpharmacological management of PCOS. Designs & Methods. Medline, CINAHL, EMBASE, Web of Science, and Cochrane Library were searched for controlled trials of effects of time-restricted eating regimens on insulin levels in patients with PCOS. A further narrative discussion on the time-restricted eating in PCOS was conducted. Results. 2662 papers were identified with 37 selected for full-text review and one paper meeting criteria for inclusion. Ramadan fasting was the only time-restricted eating regimen trialled in this population with no strong evidence of a significant effect on insulin levels. Conclusion. As the systematic review retrieved only one study investigating time-restricted eating to reduce insulin in patients with PCOS, there is no evidence to suggest that this intervention is effective. From the narrative review, based on studies in other patient groups, time-restricted eating could improve insulin resistance in those with PCOS; however, well-designed studies are required before this intervention can be recommended.
Effect of Sopoongsan on Skin Inflammation and Hyperlocomotion in Socially Isolated Mice with Atopic Dermatitis
Authors: Huong Nguyen Ly Thi , Choi Min-Jin , Shin Heung-Mook , Yang In-Jun
Published: September 2022

Psychological stress is a major exacerbating factor of atopic dermatitis (AD), a chronic inflammatory skin disease. Sopoongsan (SPS), a traditional herbal formula, has been indicated for the treatment of various skin disorders, including AD. This study investigated the effects of SPS on a 2,4-dinitrochlorobenzene- (DNCB-) induced AD mice model exposed to social isolation (SI) stress. The severity of the AD symptoms and behavioral abnormalities was evaluated. SPS reduced the clinical skin score as evaluated with the SCORing Atopic Dermatitis (SCORAD) index and suppressed the cutaneous infiltration of T-lymphocyte cells, mast cells, and eosinophils in SI-AD mice. The SPS treatment decreased the total distance and mean speed and increased resting time in the open field test (OFT) for these mice. In addition, the time spent in the social zone in the social interaction test also improved when SPS treatment was given. The levels of tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6) in the prefrontal cortex (PFC) in the SI-AD mice were reduced by the oral administration of SPS. HaCaT and BV2 cells were used for the in vitro experiments. The pretreatment with SPS reduced the protein levels of the thymus and activation-regulated chemokine (TARC) and macrophage-derived chemokine (MDC) in the HaCaT cells stimulated with TNF-α and interferon-gamma (IFN-γ) (TI). SPS also suppressed TNF-α and IL-6 secretion in lipopolysaccharide- (LPS-) stimulated BV2 cells. These results imply that SPS could be a promising candidate for the treatment of AD in patients under stress conditions and at risk of exacerbation.
Knockdown of miR-372-3p Inhibits the Development of Diabetic Cardiomyopathy by Accelerating Angiogenesis via Activating the PI3K/AKT/mTOR/HIF-1α Signaling Pathway and Suppressing Oxidative Stress
Authors: Han Zhimin , Zhao Danyang , Han Mengfan , Zhang Rongjin , Hao Yongmei
Published: September 2022

Background. DCM is the most common and malignant complication of diabetes. It is characterized by myocardial dilatation, hypertrophy, fibrosis, ventricular remodeling, and contractile dysfunction. Although many studies have demonstrated the function of miRNAs in the progression of DCM, but the specific role of miR-372-3p in DCM remains unknown. Methods. C57/BL6J mice were used to construct mouse models of DCM by intraperitoneal injection of STZ (50 mg/kg/d) for 5 consecutive days. Then the mice were randomly divided into model group (intramyocardial injection of empty lentivirus) and miR-372-3p KD group (intramyocardial injection of miR-372-3p KD lentivirus at 109/mouse). Besides, the control group (injection of 0.9% normal saline) was also set up. LY294002, a PI3K inhibitor, was employed in the current study. Western blotting, immunofluorescence staining, quantitative ultrasound method, Masson’s trichrome staining, and bioinformatics analysis were performed. Results. It was found that miR-372-3p KD significantly improved left ventricular dysfunction and cardiac hypertrophy in DCM mice. Furthermore, it also improved myocardial interstitial fibrosis and remodeling in DCM mice. Immunofluorescence staining and RT-qPCR revealed that miR-372-3p KD might accelerate cardiac remodeling by increasing angiogenesis in DCM mice. Western blotting results revealed that miR-372-3p was an upstream target of the PI3K/AKT-mTOR and HIF-1α signals, as well as NOX2, NOX4, which were responsible for angiogenesis in DCM mice. Besides, the in vitro experiment showed that LY294002 markedly diminished the increased expression levels of p-PI3K, AKT, p-mTOR, p-P70S6K, HIF-1α, NOX2, and NOX4 in the model group and the miR-372-3p KD group, suggesting that PI3K signaling pathway and oxidative stress are involved in miR-372-3p KD-induced angiogenesis in HG-stimulated C166 cells. Conclusions. MiR-372-3p KD inhibits the development of DCM via activating the PI3K/AKT/mTOR/HIF-1α signaling pathway or suppressing oxidative stress. This offers an applicable biomarker for DCM treatment.
Constructing a Novel Prognostic Signature Based on TGF-β Signaling for Personalized Treatment in Pancreatic Adenocarcinoma
Authors: Ji Tengfei , Wu Hongsheng , Ma Keqiang
Published: September 2022

Background. Pancreatic adenocarcinoma (PAAD) shows significantly high mortality. Transforming growth factor-beta (TGF-β) signaling plays an important role in tumorigenesis and development. A prognostic model was conducted using transforming growth factor-beta (TGF-β) signaling for predicting PAAD prognosis and guiding personalized therapies. Methods. Datasets were grouped into test and training sets. Univariate Cox regression analysis and least absolute shrinkage and selection operator (LASSO) were applied and introduced for identifying prognostic genes associated with TGF-β. Risk score of each sample was calculated by the prognostic model. The difference in survival, clinical information, mutations, pathways, and chemotherapy and immunotherapy sensitivities between high-risk and low-risk groups was analyzed. Results. Based on TGF-β signaling, this work built a 7-gene prognostic model showing robustness in sample classification into low-risk and high-risk groups with differential prognoses. Oncogenic pathways like glycolysis, Notch signaling, and hypoxia were noticeably enriched in the group with high risk. Interferon and STAT1 were positively associated with risk score. Importantly, the low-risk group may develop a more favorable response to both chemotherapy and immunotherapy. The current work highlighted the significant function of TGF-β signaling in PAAD development and described the potential cross-links with other oncogenic pathways. Conclusion. Notably, the prognostic signature can act as a predictor of prognosis, but as a biomarker for optimizing personalized therapies in clinical practice.
Smart Campus Economy One-Card Management Mode Based on the Integration of Big Data and Cloud Computing
Authors: Zhang Hui , Liu Xiaolun
Published: September 2022

In order to create an information construction road suitable for its own development faster and better, this paper has established a smart campus through new technologies such as big data. By increasing the application of data, cloud computing, and internet of things technologies, colleges and universities have improved their ability to comprehensively collect and efficiently process information. Combined with big data, cloud computing, and internet of things technology, this paper analyzes the construction of smart campus in colleges and universities. Finally, it summarizes the integration of big data, cloud computing, and internet of things technologies in the construction of smart campus in colleges and universities. The construction of intelligent campus card in colleges and universities can not only give full play to the advantages of campus network, but also use a card instead of various certificates of teachers and students in various consumption places on campus. In the future, with the sustainable development of information technology, smart campus will occupy a higher proportion in school management. The university must constantly improve the application level of big data and cloud computing technology in the smart campus. Therefore, in the new era, major universities should deeply understand the importance of smart campus construction and improve the application efficiency of advanced technology.
Visualization Practice and Communication Effect of Digital Chinese Films Based on Virtual Reality under Background of the Belt and Road Initiative
Authors: Han Dong , Xu Jie , Chao Peng
Published: September 2022

Since the Belt and Road Initiative was proposed, it has received extensive attention from many aspects of the international community. To disseminate the ideas, development status, and construction achievements of the Belt and Road Initiative to the outside world has become a key and difficult problem in the development process of the initiative. Among different types of film and television, virtual reality technology should be the best interpretation of film communication. The film would bring a wider space for the development of the film by means of real reproduction and virtual reality and make the film’s record form more diversified. The continuous development and innovation of new media technology enable virtual reality to pass through panoramic lenses. As the most powerful technical support for the movie, it can even be converted into the user’s eyes to serve the movie so that the presentation of the movie has more new possibilities. In this context, the article aims to interpret the visualization practice and dissemination effects of digital Chinese films with virtual reality technology. The article used the mathematical expression of the visual SLAM problem to improve the process from the world coordinate system to the pixel coordinate system. The system is constructed, and the approximate calculation of the function is carried out. The constructed system was used in the experiments. This article conducts a survey of Google’s average popularity and a comparison of the voxelization process. The experimental data showed that the performance of Sponza in this branch of the sparse octree is 88.48 ms at the resolution of 100,000, which is weaker than 80.34 ms in the Dragon scene. The performance of the cascaded voxel texture is 6.889 ms, which is also weaker than Dragon’s 5.727 ms. The structure of the rules of the cascaded voxel texture scheme made it smoother to assist with the GPU, and the speed was the fastest in both the Dragon scene and the Sponza scene. The experimental content was well completed.
Ferroelectric Ceramic Materials Prepared by Nanoparticles in Outdoor Environmental Sculpture Art
Authors: Zhang Ning , Li Jiexu , Xia Ying
Published: September 2022

With the development and progress of the city, people’s research on outdoor sculpture has gone deeper, and the field of material research has been raised to the field of spiritual culture. Tang Sancai is beautiful in color and wonderful in shape, such that when ceramics are used in outdoor environmental sculpture art, except for its performance, its appearance and tone must also be taken into consideration. Even when ferroelectric ceramics are used in outdoor sculptures, changing their shapes and taking into account their colors can be done invisibly only by passing through an electromagnetic field. Ferroelectric ceramics are generally divided into insulating, dielectric, piezoelectric, magnetic, semiconductor, transparent, and infrared sensor ceramics. This article integrates the manufacturing method of ferroelectric ceramics into outdoor environmental sculpture art. First of all, this article describes the ferroelectric ceramics and outdoor environmental sculptures, explains the method of preparing ferroelectric ceramics from barium titanate nanoparticles, and explains the pyroelectric inverse process of the electric card effect principle of electric ceramic materials, the thermodynamics of Maxwell’s relationship, and the thermodynamics of Landau’s phenomenological theory. The elasticity of the system is calculated, and the preparation of tetragonal barium titanate ferroelectric ceramics prepared by hydrothermal nanoparticles and SBT/Cu ferroelectric ceramic composites prepared by nanoparticle metallurgy is explained. In the plasma discharge mode, the optimal temperature for sintering the composite material is obtained. Then through experiments, research on the preparation and performance of the high dielectric constant BTnf-Ag/PVDF ferroelectric ceramic nanocomposite and its application in environmental sculptures are demonstrated. Compared with the two ancient BTnf/PVDF composite materials, the barium titanate fiber prepared by electrostatic spinning shows that the BTnf-Ag/PVDF composite material has a higher dielectric constant, and the dielectric loss is not too high. The 41.8vol% BTnf-Ag composite material has a dielectric constant of 82.6BTnf/PVDF, but the composite material’s dielectric constant is only 62.4, an increase of 32%. The dielectric loss of the 41.8vol% BTnf-Ag composite material is 0.053, and the dielectric loss constant of the BTnf/PVDF composite material is 0.049; the dielectric loss is reduced by 8% year-on-year. Ferroelectric ceramic composites prepared by adding silver ions have ideal dielectric properties and enhanced energy storage density.
A Variational Problem and Classification Theorem for Extremal Hypersurfaces in the Space Form
Authors: Chang Yu-Chung
Published: September 2022

The classification of the isoparametric extremal hypersurfaces in the space form is obtained in this paper. We also derived the Euler‐Lagrange equation for extremal hypersurface and obtained Simons’ type integral inequality. When the integral equality holds, we can obtain the characteristics of isoparametric extremal hypersurfaces by using this classification theorem. The classification of isoparametric extremal hypersurfaces in the space form is the first study that has not been seen in the previous literature.
[Retracted] The Sequential Influence of Creative Leadership and Organizational Environment on Strategic Performance
Authors: Salman Dilshad Ahmed , Auso Khairi Ali
Published: September 2022

As a distinct form of leadership, the phenomena of creative leadership draw interest. Such leadership is crucial for developing and sustaining the operations of contemporary organizations and businesses. When it comes to boosting strategic effectiveness, the traits of creative leadership are crucial. This is a recognition of the paradoxes and contradictions present in life and a constructive evaluation of the team's creative potential. According to this study, a creative leader may greatly impact how effectively a strategy is implemented. This study explores the connection between innovative leadership and improved strategic performance. Developing nations' societies tend to undervalue innovative leadership's value in managing administration and enterprises. Unfortunately, it received little attention from academic sources and studies. Because of this, the primary goals of this study are to comprehend the ideas of creative leadership, the uniqueness of a leader's job as a manager, and the influence of creative leadership on strategic effectiveness. The goal of quantitative research is to comprehend how creative leadership may improve strategic effectiveness. Therefore, four hypotheses were tested in this study to show how creative leadership and strategic effectiveness are related. The research demonstrates how inventive leaders can enhance customer satisfaction through creative ideas. In conclusion, the strategic performance of a corporation depends on originality and creative leadership.
Chemopreventive Efficacy of Thymoquinone in Chemically Induced Urinary Bladder Carcinogenesis in Rat
Authors: Hamaamin Karmand Salih , Marouf Bushra Hassan
Published: September 2022

The effects of thymoquinone (TQ) in a carcinogen‐based models of urinary bladder cancer were evaluated, using 45 male rats in five groups. In negative control (n = 10), only tap water was given. In positive control (n = 10), the rats received 0.05% N‐butyl‐N‐(4‐hydroxybutyl)‐nitrosamine (BBN) in drinking water for 9 weeks. In preventive groups with 25 mg/kg (n = 10) and 50 mg/kg (n = 10), oral TQ was concurrently given with 0.05% BBN for 9 weeks and continued for one more week after cessation of BBN. Preventive‐treatment group (n = 5) received 50 mg/kg TQ orally for 20 weeks. Five rats from each group were sequentially sacrificed in two phases: the induction phase at 12th week (except the last group) and the rest in postinduction phase at 20th week. The bladders were examined macroscopically for lesion formation, and the masses were submitted for histopathological evaluation. Markers for total oxidant status (TOS), inflammation (nuclear factor kappa B (NF‐κB)), and angiogenesis (vascular endothelial growth factor (VEGF)) were also assessed. There was a reduced number of bladder lesions in the TQ groups versus the carcinogen group at both phases. Histopathological findings demonstrated a significant improvement in the abnormal morphological changes in the urothelium of the TQ‐treated groups. Thymoquinone exerted a significant antioxidant and anti‐inflammatory effect by a decrease in serum level of TOS and NF‐κB at week 12 which was maintained low in phase two at week 20. The serum level of VEGF was also alleviated in the induction phase at week 12 and maintained low in postinduction period. In TQ preventive‐treatment approach, a nonsignificant elevation of serum level of TOS and NF‐κB and slight reduction in VEGF were observed at the end of the experiment. These data suggest that TQ may be effective in preventing bladder carcinogenesis, and the suggested mechanisms might be related to antioxidant, prooxidant, and anti‐inflammatory properties of TQ.
Application of Virtual Instrument Technology in the Teaching of Embedded System Course
Authors: Zheng Xiaoxia , Dong Fang
Published: September 2022

The development of information technology has brought tremendous changes to our lives. It has applications in industry, agriculture, and other fields, especially in the education industry. Virtual instrument technology is a new technology that combines computer and electronic instruments. It not only has low application cost but also has excellent performance. It can be used for measurement analysis, experimental simulation, and other applications, and it can also play a great role in course teaching. Based on this, this paper proposes the application research of virtual instrument technology in embedded system course teaching. This article adopts the method of literature data, questionnaire survey, and mathematical statistical analysis to design a research experiment of embedded system course teaching application based on virtual instrument technology and compare and analyze the results of the control group and the experimental group. The average score difference between the experimental group and the control group in the embedded system course is 3.62 points, especially in the practice score. The practice score of the control group is 58.34 points, while the practice score of the experimental group is 85.22 points, which fully explains virtual reality. With the aid of instrument technology, the embedded course teaching of the experimental group has obtained more practical opportunities; the students’ hands-on experiment ability is also stronger; and the overall learning effect is better.
On the New Generalized Hahn Sequence Space

h

d

p
Authors: Tuğ Orhan , Malkowsky Eberhard , Hazarika Bipan , Yaying Taja
Published: September 2022

In this article, we define the new generalized Hahn sequence space

h

d

p

, where

d
=

d

k

k
=
1

∞

is monotonically increasing sequence with

d

k

≠
0

for all

k
∈
ℕ

, and

1
<
p
<
∞

. Then, we prove some topological properties and calculate the

α
−

,

β
−

, and

γ
−

duals of

h

d

p

. Furthermore, we characterize the new matrix classes

h

d

,
λ

, where

λ
=

b
v
,
b

v

p

,
b

v

∞

,
b
s
,
c
s
,

, and

μ
,

h

d

, where

μ
=

b
v
,
b

v

0

,
b
s
,
c

s

0

,
c
s

. In the last section, we prove the necessary and sufficient conditions of the matrix transformations from

h

d

p

into

λ
=

ℓ

∞

,
c
,

c

0

,

ℓ

1

,

h

d

,
b
v
,
b
s
,
c
s

, and from

μ
=

ℓ

1

,
b

v

0

,
b
s
,
c

s

0

into

h

d

p

.
Coping with Knowledge Inertia for Improving R&D Team Creativity by Using Structural Equation Modeling and Hierarchical Multiple Regression
Authors: Zhou Jianming , He Ping , Jiang Nan
Published: September 2022

The study reported here examined the relationship between knowledge inertia and R&D team creativity by focusing on the mediating effect of cognitive conflict with direct and moderating effect of intentional unlearning capability to find out how to improve R&D team creativity for sustainable innovation from the perspective of coping with knowledge inertia. Data from a two-wave survey of 135 R&D teams within 67 firms in China were used to conduct the analysis of structural equation modeling and hierarchical multiple regression. Results showed that as predicted, knowledge inertia can not only decrease R&D team creativity directly but also decrease it by reducing the level of cognitive conflicts among the R&D team members, causing serious damage to R&D team creativity. In addition, intentional unlearning capability can help the R&D team reduce knowledge inertia directly and moderated the negative relationship between knowledge inertia and R&D team creativity, which was when intentional unlearning capability was high, the negative relationship between knowledge inertia and R&D team creativity would be weakened, and when it was low, the relationship would be strengthened, thus further verifying the important role of intentional unlearning capability in reducing the negative impact of knowledge inertia on R&D team creativity for sustainable innovation.
Mechanistic Study of Rail Gouging during Hypersonic Rocket Sled Tests
Authors: Zhou Xuewen , Yan Huadong , Chen Cheng , Yu Yuanfeng
Published: September 2022

Gouging—an obstacle to the development of hypersonic rocket sled test techniques—was mechanistically investigated through experimental and theoretical analyses. Typical gouges were analyzed using macroscopic and microscopic experiments to investigate the evolution of gouging. Quasistatic compression and Hopkinson bar experiments were performed to systematically study the thermoviscoplastic properties of U71Mn rail steel under wide ranges of the strain rate and temperature. The critical condition for gouging was derived based on a thermoviscoplastic constitutive model supplemented by a three-variable criterion for an adiabatic shear instability. The results showed the following. (1) Adiabatic shear bands (ASBs) form when stress reduction under the combined action of frictional heating and high-speed deformation exceeds the strain-hardening effect of the rail material. (2) The nonuniform deformation of the edges of ASBs leads to the generation of cracks that split the rail surface. As the ASBs expand, the cracks grow and coalesce, eventually causing the material to peel off, forming gouges. (3) The relationships among the temperature, strain rate, and strain at the onset of gouging can be determined based on the critical condition for the formation of ASBs in rail steel.
“Before Dawn,” Listening to the Voices of Social Media: A Study on the Public’s Response to the COVID‐19 Vaccine
Authors: He Jiangyi , Zhou Maojun
Published: September 2022

The COVID‐19 pandemic is a worldwide catastrophe. In the absence of an effective drug, one effective measure to pull the pandemic to the end is herd immunity by taking vaccines, while the hesitation and anti‐attitude from social media affect the vaccination. This makes it crucial to evaluate the text data about the COVID‐19 vaccine from tweets. The period for data used in this study is 1 Aug to 31 Oct, 2020, since it is just before promoting the use when public reactions to the COVID‐19 vaccine can influence their subsequent vaccination behavior. In this study, we used the latent Dirichlet allocation (LDA) topic model and sentiment analysis to explore public reactions to the COVID‐19 vaccine. The results indicate that the public discussion could be divided into 11 topics, which could be further summarized into four different themes: (1) concerns about COVID‐19; (2) concerns about vaccine development, production, and distribution; (3) how to control the COVID‐19 before obtaining the vaccine; and (4) concerns about information of vaccine safety and efficacy. It can be concluded that to a large extent, public reactions to vaccines are dominated by positive sentiment. Specifically, the politicization of the vaccine approval process, suspension of vaccine trials, and measures to control COVID‐19 tend to trigger negative public sentiment; whereas information related to successful vaccine development and availability enhances positive public sentiment. These findings help us understand public reactions to the COVID‐19 vaccine, uncover potential factors that may influence vaccination behavior, and help policymakers understand public opinion about the COVID‐19 vaccine and develop rational and effective policies.
Evaluation of the Efficacy of Nasal Sedation Midazolam Compared with Dexmedetomidine in the Management of Uncooperative Children with Down Syndrome during Dental Treatment
Authors: Hamod Mohamad Nabil , Kouchaji Chaza , Rostom Faten , Alzoubi Hasan , Katbeh Imad , Tuturov Nikolay
Published: September 2022

Objective. This study aimed to compare the intranasal administration of midazolam and dexmedetomidine in uncooperative children with Down syndrome. Materials and Methods. The sample consisted of 20 children with Down syndrome aged 5 to 11 years who were divided equally into two groups: Group 1 (experimental) nasal dexmedetomidine and Group 2 (control) nasal midazolam. The efficacy of both the drugs was evaluated according to Ohio State University Behavioral Rating Scale (OSUBRS), University of Michigan scale (UMSS), and Houpt general behavior scale. Results. Both substances have been effective in the management of children with Down syndrome. There were no statistically significant differences for Ohio State University Behavioral Rating Scale (OSUBRS) (

P

value = 0.631), University of Michigan scale (UMSS) (

P

value = 0.739), and Houpt general behavior scale (

P

value = 0.481). Conclusion. Both midazolam and dexmedetomidine nasal can be used to sedate children with Down syndrome.
How Cognitive Reserve should Influence Rehabilitation Choices using Virtual Reality in Parkinson’s Disease
Authors: Pezzi Letizia , Di Matteo Andrea , Insabella Roberta , Mastrogiacomo Sara , Baldari Carlo , Machado Reiss Victor , Paolucci Teresa
Published: September 2022

Virtual reality (VR) is used in the rehabilitation of patients with Parkinson’s disease (PD) in several studies. In VR trials, the motor, physical characteristics, and the degree of the disease are often well defined, while PD cognitive reserve is not. This systematic review was performed to define a cognitive profile for patients with PD who could best benefit from using VR to enhance functional motor aspects during rehabilitation. PubMed, Cochrane Library, Scopus, and Web of Sciences databases were analysed to identify randomized clinical trials (RCT) and randomized pilot trials that addressed the rehabilitation of motor symptoms in subjects with PD using VR. The included studies used Mini-Mental State Examination (MMSE) or Montreal Cognitive Assessment (MoCA) to evaluate the cognitive aspect. Only articles written in English and with full texts were considered. The risk of bias from all included studies was assessed based on the Cochrane risk-of-bias tool and the PRISMA guideline was considered. Eighteen articles were eligible for review, including three randomized pilot trials. All studies aimed to evaluate the effect of VR on the motor aspects typically affected by PD (balance, postural control, risk of falls, walking, and reaching). The most widely adopted approach has been nonimmersive VR, except for one study that used immersive VR. Both the benefits of physical activity on the motor symptoms of patients with PD and the impact of cognitive reserve during the rehabilitation of these patients were highlighted. The analysis of the results allowed us to outline the ideal cognitive profile of patients with PD who can benefit from the effects of rehabilitation using VR.
Dynamic Database Design of Sports Quality Based on Genetic Data Algorithm and Artificial Intelligence
Authors: Yue Qiang
Published: September 2022

According to the traditional data mining method, it is no longer applicable to obtain knowledge from the database, and the knowledge mined in the past must be constantly updated. In the last few years, Internet technology and cloud computing technology have emerged. The emergence of these two technologies has brought about Earth-shaking changes in certain industries. In order to efficiently retrieve and count a large amount of data at a lower cost, big data technology is proposed. Big data technology has played an important role for data with various types, huge quantities, and extremely fast changing speeds. However, big data technology still has some limitations, and researchers still cannot obtain the value of data in a short period of time with low cost and high efficiency. The sports database constructed in this paper can effectively carry out statistics and analysis on the data of sports learning. In the prototype system, log files can be mined, classified, and preprocessed. For the incremental data obtained by preprocessing, incremental data mining can be performed, a classification model can be established, and the database can be updated to provide users with personalized services. Through the method of data survey, the author studied the students’ exercise status, and the feedback data show that college students lack the awareness of physical exercise and have no fitness habit. It is necessary to accelerate the reform of college sports and cultivate students’ good sports awareness.
Effects of Thoracic Paravertebral Block on Postoperative Anxiety and Depression for Patients Undergoing Thoracoscopic Lung Cancer Radical Surgery
Authors: Geng Congfu , Tong Chunting , Li Houxiang , Shi Shaojiang , Yu Jiancheng , Huang Lei
Published: September 2022

This study is aimed at investigating the effect of thoracic paravertebral block (TPVB) on the occurrence of chronic postoperative pain, postoperative anxiety, and depression in patients undergoing thoracoscopic radical lung cancer surgery. A total of 120 patients who underwent thoracoscopic radical lung cancer surgery in our hospital from June 2019 to March 2021 were included. There were 62 males and 58 females, with an age of 18-75 years old and a body mass index of 20-28 kg/m2. Patients were divided into two groups using the random number table method, TPVB group (

n
=
60

) and normal saline group (control group,

n
=
60

). Two-point nerve block was performed at T5-6 and T6-7 levels. Patients in the TPVB group received nerve block with 15 mL of 0.375% ropivacaine hydrochloride, while those in the control group received 5 mL of 0.9% normal saline. The numeric rating scale (NRS) scores at rest and during movement at 24 and 48 hours after surgery and the number of times the button on the patient-controlled analgesia pressed at 24 h after surgery in two groups were recorded. All patients were followed up by outpatient visits or phone visits at 1 year after surgery and assessed using Leeds Assessment of Neuropathic Symptoms and Signs (LANSS) pain scale and Hospital Anxiety and Depression Scale (HADS). According to the inclusion, exclusion, and drop-out criteria, 108 patients were finally included, with 52 patients in the TPVB group and 56 patients in the control group. There was no statistically significant difference between the two groups in terms of age, sex, height, body weight, body mass index, ASA classification, and operation time (

P
>
0.05

). NRS pain scores at 24 h (

P
=
0.01

08) and 48 h (

P
=
0.0000

) after surgery, the number of times pressing patient-controlled analgesia at 24 h after surgery (

P
=
0.0000

), the LANSS scores (

P
=
0.0000

), HADS anxiety score (

P
=
0.0000

), and depression scores (

P
=
0.0000

) at 1 year after surgery in the TPVB group were both significantly lower than those in the control group. To sum up, ultrasound-guided TPVB can effectively relieve pain at 48 hours after thoracoscopic lung cancer radical surgery and chronic postoperative pain at 6 months after V thoracoscopic lung cancer radical surgery.
Evaluation of Social and Economic Benefit of Urban Rail Transit Project Based on Spatial Econometric Model
Authors: Zhang Sanbao
Published: September 2022

The social and economic benefits of urban rail transit projects based on spatial econometric model are evaluated. A spatial econometric model is established to evaluate the social and economic benefits of rail transit projects in different cities in China. From 2007 to 2019, the growth rate of GDP in the eastern, central, and western regions as well as the whole country showed a downward trend. The growth rate was at a relatively high level in 2007 and 2008. It dropped sharply to below 10% in 2009 and again to 10-15% in 2012. The growth rate of eastern and central China and the whole country was basically maintained between 5% and 12%. The development of urban rail transit projects was positively correlated with social and economic benefits. Therefore, it is necessary to take into account all the influencing factors and strengthen the development of urban rail transit projects to promote the growth of social and economic benefits.
Reduction an Inverse Problem to a System of Second Kind Fredholm Integral Equations with No Singularities
Authors: Sajjadmanesh M. , Aydi H. , Younis J.
Published: September 2022

In this article, we deal with an inverse problem concerning the two‐dimensional Laplace equation with local boundary conditions on a bounded region. In this problem, the goal is to reduce it into a system of Fredholm integral equations of the second kind involving kernels with weakly/or no singularities (Fredholm property) by considering some additional conditions on the parameters of the problem. Finally, the method is carried out on an example, to show the simplicity and efficiency of the method.
How Health Consumption Affects the Health Level of the Population: Analysis Based on the Chinese Family Panel Studies
Authors: Zhang Zheng
Published: September 2022

Health is an inevitable requirement for the promotion of overall human development and a basic condition for economic and social development. Each person is the first person responsible for his or her own health, and health has an important significance to the residents themselves. Data from the Chinese Family Panel Studies (CFPS) for 3 years—2014, 2016, and 2018—were selected to study the impact of active health consumption on residents’ health using a panel data fixed effects model. It was found that proactive health consumption can significantly improve the health of residents, and the main findings still hold through robustness tests including instrumental variables. The mechanism analysis shows that active health consumption can improve the health level of residents by increasing the frequency of exercise. Therefore, in the context of the “Health China” strategy, active health consumption should be promoted to cultivate the habit of physical exercise so as to continuously improve the health level of the residents.
Enhancement of Vitamin K2 Efflux in Bacillus subtilis Natto via a Potential Protein Receptor for Increased Yield
Authors: Li Chu , Wang Han , Ma Guoliang , Wang Li , Zheng Zhiming , Zhao Genhai , Wang Peng
Published: September 2022

Bacillus subtilis is one of the few strains that can secrete synthetic menaquinone-7 (MK-7) to the outside of the cell, and its purpose and mechanism have not been clearly studied. As an amphiphilic protein naturally synthesized by Bacillus subtilis, the BslA protein may be involved in the inversion of extracellular vitamin K2 solubility. The protein structure in UniProt was used to search for the possible binding sites of MK-7, and the analysis of the higher ranking results of the genetic algorithm showed that the ASP166 residue was likely to be the binding site. They could form a stable hydrogen bond connection through ASP166, and approximately 7 proteins formed the conformation of a fixed naphthoquinone ring. We isolated and obtained the BslA protein by Ni-NTA affinity chromatography. Then, MK-7 was modified by BslA in vitro. A series of experiments, such as SEM, XPS, and WCA, showed that MK-7 and BslA proteins can realize self-assembly and transform from fat-soluble to water-soluble complexes. When the bslA protein in Bacillus subtilis natto was overexpressed, its MK-7 synthesis ability was further improved, especially the extracellular MK-7 content, which increased by 16%. This finding suggests that the BslA protein in Bacillus subtilis is likely to be involved in the extracellular secretion of MK-7 as a receptor.