The Current Situation and Improvement Strategy of Physical Education in Colleges and Universities

At present,physical education is listed as the key teaching.This paper introduces the importance of physical education in Colleges and universities,analyzes the current situation of College Physical Education and explores the improvement strategies of College Physical Education at this stage.

Current Situation and Improvement Strategies of Teaching Engagement by Teachers in Higher Medical Colleges Under the Background of“New Medical Education”

The“New Medical Education”is a new requirement for the development of medical education in the new era.As a key and core element of the construction of the“New Medical Education,”the engagement in teaching work of university teachers is a key issue that determines the level of teaching development of university teachers and affects the quality of talent cultivation in universities.Using the literature review method,this study analyzed 39 relevant literatures retrieved from China National Knowledge Infrastructure(CNKI)from 1997 to 2023.The concept,connotation,current situation,influencing factors,and improvement strategies of teaching engagement by university teachers were reviewed and summarized.The results showed that the issue of teaching engagement by university teachers has not received high attention in the field of higher education,especially in higher medical education,which has not yet been reported.Although the overall number of literature is not large,some of the conclusions have important implications for the next research on the influencing factors and mechanisms of double-qualified teacher engagement in higher medical colleges.

Relationship and improvement strategies between drug nanocarrier characteristics and hemocompatibility:What can we learn from the literature

This article discusses the various blood interactions that may occur with various types of nano drug-loading systems. Nanoparticles enter the blood circulation as foreign objects. On the one hand, they may cause a series of inflammatory reactions and immune reactions, resulting in the rapid elimination of immune cells and the reticuloendothelial system, affecting their durability in the blood circulation. On the other hand, the premise of the drug-carrying system to play a therapeutic role depends on whether they cause coagulation and platelet activation, the absence of hemolysis and the elimination of immune cells. For different forms of nano drug-carrying systems, we can find the characteristics, elements and coping strategies of adverse blood reactions that we can find in previous researches. These adverse reactions may include destruction of blood cells, abnormal coagulation system, abnormal effects of plasma proteins, abnormal blood cell behavior, adverse immune and inflammatory reactions, and excessive vascular stimulation. In order to provide help for future research and formulation work on the blood compatibility of nano drug carriers.

Study on the Improvement Strategies of Physical Environment for Square in Severe Cold Regions' Rural Areas

To improve the comfortable physical environment for square in severe cold regions' rural areas. This paper applies the methods of questionnaires,field testing and statistical analysis to compare and analyze two different square cases of Qingyunpu in Liaoning Province,and conclude the main factors which affect the physical environmental comfort. The improvement strategies for physical environment of rural square are put forward from the aspects of site selection,road position,orientation,landscape design,and ground pavement material selection,aiming to provide the design basis for the physical environment of square in severe cold regions' rural areas.

A Study on the improvement strategies to Effectiveness of Online Teaching and Learning in EFL Classes in College

English online learning has been common trend in the world, how to teach and learn effectively in EFL classes through online environment is an urgent study. The purpose of the study to analyze the factors of affecting the effectiveness of online teaching and learning in EFL classes in college. We build up a three-dimensional model in the perspective of teacher, learner and technology. And we propose the strategies of improving the effectiveness of online teaching and learning in EFL classes in college in the dimensions of teacher, learner and technology.

Study on Urban Greenway Improvement Strategies from the Perspective of Landscape Justice

With the consistent development of society,economy and culture,people have had increasing requirements on high-quality public spaces.However,current landscapes have been far away from equal and just for various causes,and to explore the realization of landscape justice has become a key concern in the fi eld of landscape architecture.Greenway as a linear space with bigger scale and strong connectivity in the current green space inventory is easier to update,so it provides a new direction for realizing landscape justice.This paper analyzed the existing greenway policies,design and planning,and problems in using,provided corresponding strategies for improvement,so as to achieve the landscape justice,provide new ideas and instructions for the present greenway construction and maintenance.

The Research Self-Efficacy of Elementary Teachers:Current status,Factors,and Strategies for Improvement

Research self-efficacy is of great significance for teachers to improve their interest and achievements in scientific research.In this study,261 elementary teachers were surveyed through online questionnaires to understand their research self-efficacy.The results showed that most elementary teachers have good research self-efficacy;education background,years of teaching,research environment,and attitude toward research all had influence on the research self-efficacy of elementary teachers.Based on this situation,schools should make efforts,such as improving communication,providing financial support,establishing a scientific research support center,and helping teachers under unfavorable situations.For elementary teachers,they should realize the importance of education research and improve their research literacy。

Long term survival improved by optimization of immunosuppression strategy in renal transplant recepients:a single center experience

Objective To investigate influence of immunosuppression strategy optimization on outcomes of renal transplant recipients in the last decades. Methods Data from 404 renal transplant recipients from Jan. 1st,2001 to Dec. 31st,2010 were analyzed retrospectively. The pa-

Research progress on vanadium oxides for potassium-ion batteries

Potassium-ion batteries(PIBs)have been considered as promising candidates in the post-lithium-ion battery era.Till now,a large number of materials have been used as electrode materials for PIBs,among which vanadium oxides exhibit great potentiality.Vanadium oxides can provide multiple electron transfers during electrochemical reactions because vanadium possesses a variety of oxidation states.Meanwhile,their relatively low cost and superior material,structural,and physicochemical properties endow them with strong competitiveness.Although some inspiring research results have been achieved,many issues and challenges remain to be further addressed.Herein,we systematically summarize the research progress of vanadium oxides for PIBs.Then,feasible improvement strategies for the material properties and electrochemical performance are introduced.Finally,the existing challenges and perspectives are discussed with a view to promoting the development of vanadium oxides and accelerating their practical applications.

LDH-based nanomaterials for photocatalytic applications:A comprehensive review on the role of bi/trivalent cations, anions,morphology, defect engineering, memory effect, and heterojunction formation

Using sunlight to drive chemical reactions via photocatalysis is paramount for a sustainable future.Among several photocatalysts,employing layered double hydrides(LDH) for photocatalytic application is most straightforward and desirable owing to their distinctive two-dimensional(2D) lamellar structure and optical attributes.This article reviews the advancements in bimetallic/trimetallic LDHs and various strategies to achieve high efficiency toward an outstanding performing photocatalyst.Firstly,the tuning of LDH components that control the electro nic and structural properties is explained.The tu ning obtained through the adoption,combination,and incorporation of different cations and anions is also explained.The progress of modification methods,such as the adoption of different morphologies,delamination,and defect engineering towards enhanced photocatalytic activities,is discussed in the mainstream.The band engineering,structural characteristics,and redox tuning are further deliberated to maximize solar energy harvesting for different photocatalytic applications.Finally,the progress obtained in forming hierarchical heterostructures through hybridization with other semiconductors or conducting materials is systematically disclosed to get maximum photocatalytic performance.Moreover,the structural changes during the in-situ synthesis of LDH and the stability of LDH-based photocatalysts are deliberated.The review also summarizes the improvements in LDH properties obtained through modification tactics and discusses the prospects for future energy and environmental applications.

A Novel Obstacle Avoidance Consensus Control for Multi-AUV Formation System

In this paper, the fixed-time event-triggered obstacle avoidance consensus control for a multi-AUV time-varying formation system in a 3D environment is presented by using an improved artificial potential field and leader-follower strategy(IAPF-LF). Firstly, the proposed fixed-time control can achieve the desired multi-AUV formation within a fixed settling time in any initial system state. Secondly, an event-triggered communication strategy is developed to govern the communication among AUVs, and the communication energy consumption can be decremented. The time-varying formation obstacle avoidance control algorithm based on IAPF-LF is designed to avoid static and dynamic obstacles, the desired formation is maintained in the presence of external disturbances, and there is no Zeno behavior under the fixed-time event-triggered consensus control strategy.The stability of the system is proved by the Lyapunov function and inequality scaling. Finally, simulation examples and water pool experiments are reported to verify the performance of the proposed theoretical algorithms.

Comparisons and Improvements of Key Operating Characteristics of Current Source Converter Applied in HVDC System

Because of its controlled power factor and no commutation failure,current source converter(CSC)made up of reverse-blocking IGCTs(RB-IGCTs)offers broad application prospects in the field of HVDC system.Valve voltage and power operating range as the most important operating characteristics should be paid attention to but they are always contradictory.First,the relationship between valve voltage and modulation index is obtained.In particular,valve voltage of converter under the three typical modulation methods is compared,analyzed,and verified.Second,with the help of the independent control strategy and coordinated control strategy of both ends,power operating ranges of the three modulation methods are comprehensively analyzed and compared.Third,in order to solve power coupling at a low active power,the improved coordination control strategy at both ends in this paper is proposed and the relationships among active power,reactive power,DC current and phase angle difference are given in detail.Finally,a 500 kV/3 kA simulation system was built in PSCAD/EMTDC to obtain comparison results of the key operating characteristics of CSC under different modulation methods and the converter can realize unity power operation under random active power after adopting the improved coordinated control strategy,and DC current does not decrease to zero,verifying effectiveness of the coordinated control strategy.

Strategies for Improving Enterprise Standardization Management of Tropical Crop Machinery

There are two categories of tropical crop machinery. One comprises operation machinery that is used for planting, managing and harvesting tropical crops, while the other comprises process machinery for processing tropical crops. Tropical crop machinery is distinguished from other agricultural machinery by the special crops that such machinery cultivates and processes.……

Recent Advances in Stability Improvement Strategies of M-N_(x)/C Catalysts Towards Oxygen Reduction Reaction

Although fuel cells possess advantages of high energy conversion efficiency and zero-carbon emission,their large-scale commercialization is restricted by expensive and scarce platinum(Pt)catalysts.Metal-nitrogen-carbon(M-Nx/C)catalysts are hailed as the most promising candidates to replace Pt due to their considerable oxygen reduction reaction(ORR)activity and low cost.Despite tremendous progress in terms of active site identification and activity improvement being achieved in the past few decades,the M-Nx/C catalysts still suffer from insufficient durability,which drastically limits their practical application.In this regard,understanding degradation mechanisms and customizing stabilization strategies are of significant importance yet challengeable.In this review,we summarize the recent advances in the stability improvement of M-Nx/C catalysts.The stability test protocols of the M-Nx/C are firstly introduced.Subsequently,with the combination of advanced ex situ and in situ characterization techniques and density functional theory calculation,we present a comprehensive overview of the main degradation mechanisms during ORR process.Aiming at these deactivation issues,a variety of novel improvement strategies are developed to enhance the stability of M-Nx/C.Finally,the current challenges and prospects to design highly stable M-Nx/C catalysts are also proposed.

Recent advancements and manipulation strategies of colloidal Cs_(2)B^(I)B^(III)X_(6)lead-free halide double perovskite nanocrystals

Double-metallic lead-free halide perovskites,Cs_(2)B^(I)B^(III)X_(6),sharing three-dimensional crystal structure,have been under the spotlight as the promising alternatives for the toxic and instable lead-based counterparts.Interest in Cs_(2)B^(I)B^(III)X_(6)motivates intense research into their colloidal nanocrystals(NCs).Recently,Cs_(2)B^(I)B^(III)X_(6)NCs have made great progress in the optical performance via alloying or doping,but there are still great challenges for optoelectronic applications.In this review,the latest advances of Cs_(2)B^(I)B^(III)X_(6)NCs in synthesis approaches,bandgap engineering,photoluminescence(PL)optimization,and applications are summarized.The focus is put upon the composition-property relationships of Cs_(2)B^(I)B^(III)X_(6)NCs,which is approached by discussing the influences of composition variation on the electronic states,carrier dynamics,and optical properties.The challenges and the corresponding improving strategies in the development of high-effective and stable Cs_(2)B^(I)B^(III)X_(6)NCs for device applications are also highlighted.It is believed that this review can deepen the understanding on this burgeoning material system and shed light on their future research directions.

Strategies to improve electrochemical performances of pristine metal‐organic frameworks‐based electrodes for lithium/sodium‐ion batteries

Metal‐organic frameworks(MOFs)have attracted considerable attention as promising next‐generation active electrode materials for lithium‐ion batteries(LIBs)or sodium‐ion batteries(SIBs)because of ultrahigh specific surface area,uniformly distributed pores,and tunable structure.However,there are some disadvantages inevitably far from meeting commercial requirements,such as low conductivity,inconvenient electron transmission,and unsatisfactory circulation stability.In this review,a comprehensive summary of MOFs‐based electrode materials is presented and discussed.First,the general Li^(^(+))/Na^(+)storage mechanism in MOFs‐based electrode materials,including conversion‐and insertion‐type reactions,are summarized with details of active inorganic/organic ligands.Second,MOFs as anode materials for LIBs/SIBs are emphasized and improved on the electrochemical performances.Furthermore,very few research literature on MOFs‐based cathode materials is also discussed.Finally,opinions and prospects on the current challenge of MOFs‐based electrode materials are provided for future research directions.

Development of Transition Metal Nitrides as Oxygen and Hydrogen Electrocatalysts

With the increasing demand for energy, various emerging energy storage/conversion technologies have gradually penetrated human life, providing numerous conveniences. The practical application efficiency is often affected by the slow kinetics of hydrogen or oxygen electrocatalytic reactions(hydrogen evolution and oxidation reactions, oxygen evolution and reduction reactions) among the emerging devices. Therefore, the researchers devote to finding cost-effective electrocatalysts. Non-noble metal catalysts have low cost and good catalytic activity, but poor stability, agglomeration, dissolution, and other problems will occur after a long cycle, such as transition metal oxides and carbides. Transition metal nitrides(TMNs) stand out among all kinds of non-noble metal catalysts because of the intrinsic platinum-like electrocatalytic activities, relatively high conductivity, and wide range of tunability. In this review, the applications of TMNs in electrocatalytic fields are summarized based on the number of metals contained in TMNs. The practical application potentials of TMNs in fuel cell, water splitting, zinc-air battery and other electrochemical energy storage/conversion devices are also listed. Finally, the design strategies and viewpoints of TMNs-based electrocatalyst are summarized. The potential challenges of TMNs-based electrocatalyst in the development of electrocatalytic energy devices in the future are prospected.

Strategies for Improving Public Transportation Accessibility in Beijing's Urban Regeneration from an Inclusive Perspective: Inspirations from Paris's Experience

As China’s urbanization has transformed from extensive development to "refined operation," urban regeneration is more significant. This paper analyzes changes in research perspectives of urban regeneration in recent years at home and abroad and the innovative concept of inclusive development proposed in the context of globalization, finding that the connotation of urban regeneration in European countries has been gradually enriched in order to promote social integration. Based on this, the paper examines how Paris, the first European city, combined inclusive development and urban regeneration and addressed social integration and equity in urban regeneration by taking accessibility as a key point in solving the most fundamental transportation problems. Based on lessons learned from Paris in developing a barrier-free transportation system, it proposes specific optimization strategies at the micro level in accordance with the status quo of public transportation accessibility in Beijing’s urban regeneration.