Buried Interface Molecular Hybrid Enables Efficient Perovskite Solar Cells

Perovskite solar cells(PSCs)with a positive-intrinsicnegative(p–i–n,commonly referred to as“inverted”)structure are becoming commercially attractive due to their superior power conversion efficiency(PCE)and better operational stability as compared to the“normal”structure device.^([1–5])Nonetheless,further improvements in the device performance of inverted PSCs are hampered by interface losses,particularly where the buried interfaces are responsible for perovskite crystallization and chargecarrier extraction.^([6–9])

6G New Multiple Access Technology

As a basic technology at physical layer of mobile communications,non-orthogonal multiple access has been attracting wide attention across the academia and the industry.During the standardization of the fifth-generation(5G)of mobile communications,3GPP conducted preliminary study on non-orthogonal multiple access without reaching the consensus to standardize the technology.

Low-Voltage IGZO Field-Effect Ultraviolet Photodiode

In the era of Internet of Things(Io Ts),an energy-efficient ultraviolet(UV)photodetector(PD)is highly desirable considering the massive usage scenarios such as environmental sterilization,fire alarm and corona discharge monitoring.So far,common self-powered UV PDs are mainly based on metal-semiconductor heterostructures or p–n heterojunctions,where the limited intrinsic built-in electric field restricts further enhancement of the photoresponsivity.In this work,an extremely low-voltage field-effect UV PD is proposed using a gatedrain shorted amorphous IGZO(a-IGZO)thin film transistor(TFT)architecture.A combined investigation of the experimental measurements and technology computer-aided design(TCAD)simulations suggests that the reverse current(ⅠR)of field-effect diode(FED)is highly related with the threshold voltage(Vth)of the parental TFT,implying an enhancement-mode TFT is preferable to fabricate the field-effect UV PD with low dark current.Driven by a low bias of-0.1 V,decent UV response has been realized including large UV/visible(R_(300)/R_(550))rejection ratio(1.9×10^(3)),low dark current(1.15×10^(-12)A)as well as high photo-to-dark current ratio(PDCR,~10^(3))and responsivity(1.89 A/W).This field-effect photodiode provides a new platform to construct UV PDs with well-balanced photoresponse performance at a low bias,which is attractive for designs of large-scale smart sensor networks with high energy efficiency.

Multiscale Characteristics and Connection Mechanisms of Attraction Networks:A Trajectory Data Mining Approach Leveraging Geotagged Data

Urban tourism is considered a complex system,and multiscale exploration of the organizational patterns of attraction networks has become a topical issue in urban tourism,so exploring the multiscale characteristics and connection mechanisms of attraction networks is important for understanding the linkages between attractions and even the future destination planning.This paper uses geotagging data to compare the links between attractions in Beijing,China during four different periods:the pre-Olympic period(2004–2007),the Olympic Games and subsequent‘heat period’(2008–2013),the post-Olympic period(2014–2019),and the COVID-19(Corona Virus Disease 2019)pandemic period(2020–2021).The aim is to better understand the evolution and patterns of attraction networks at different scales in Beijing and to provide insights for tourism planning in the destination.The results show that the macro,meso-,and microscales network characteristics of attraction networks have inherent logical relationships that can explain the commonalities and differences in the development process of tourism networks.The macroscale attraction network degree Matthew effect is significant in the four different periods and exhibits a morphological monocentric structure,suggesting that new entrants are more likely to be associated with attractions that already have high value.The mesoscale links attractions according to the common purpose of tourists,and the results of the community segmentation of the attraction networks in the four different periods suggest that the functional polycentric structure describes their clustering effect,and the weak links between clusters result from attractions bound by incomplete information and distance,and the functional polycentric structure with a generally more efficient network of clusters.The pattern structure at the microscale reveals the topological transformation relationship of the regional collaboration pattern,and the attraction network structure in the four different periods has a very similar importance profile structure suggesting that the attraction network has the same construction rules and evolution mechanism,which aids in understanding the attraction network pattern at both macro and micro scales.Important approaches and practical implications for planners and managers are presented.

The neurofibromatosis type 1 and skin and soft-tissue tumors forum of the 23rd international congress of plastic and reconstructive surgery was successfully held in Shanghai

On March 23,2024,at the 23rd Shanghai International Congress of Plastic and Reconstructive Surgery,a Neurofibromatosis Type 1 and Skin and Soft-Tissue Tumors Forum was unveiled.This forum aimed to foster multidisciplinary cooperation to standardize the diagnosis and treatment of neurofibromatosis and skin and soft-tissue tumors,attracting leading experts and scholars from across the nation.It served as a pivotal platform for sharing advancements in pathology,clinical practices,and surgical techniques related to these conditions,alongside discussions on standardized care and precision medicine,marking a significant step forward in the field.

By Deepening Regional Cooperation,the CCPIT Serve as a Bridge for Foreign Investment

On June 28,t he China Council for the Promotion of International Trade(CCPIT)held its regular monthly press conference in Beijing.Spokesperson Zhao Ping introduced China’s latest progress and policy trends in terms of attracting foreign investment,regional cooperation and supporting Chinese brands at the meeting.

Trust in AI:How to build global confidence

During the ISO Annual Meeting,the session themed on“Trust in AI:How to build global confidence”was held on September 10.Wael Diab,Chair of ISO/IEC JTC 1/SC 42 on AI,Heather West,Senior Director of Cybersecurity&Privacy Services at U.S.based law firm Venable and coordinator of the alliance for trust in AI,and Wan Sie Lee,Director of Trusted AI&Data at Singapore's Infocomm Media Development Authority(IMDA)were invited as guests to discuss how to prevent potential risks brought by the rapid development of AI technologies,and how standards can play a crucial role in the process to build global confidence on AI.The meeting took place in hybrid forms,attracting participants from all over the world both on site and online.

Picturing the Times

Tourists sightsee on a boat in a massive lotus pond scenic area in Xinghua,Taizhou,east China’s Jiangsu Province,on August 5.When summer peaks,lotus flowers enter their blooming season,attracting throngs of tourists to admire their beauty.

The Magic of Water Towns: Wuzhen and Xitang

The appeal of Wuzhen and Xitang continues in the modern era,attracting millions of visitors every year to explore their beauty and cultural legacy.WUZHEN and Xitang,two old towns in Zhejiang Province in east China,are historically known as places of singular serenity and sublime beauty.Today,they are top tourist destinations because of their well-preserved landscapes,gleaming water bodies,and bracing water town air.

Advancements in Web3 Infrastructure for the Metaverse

Web3,also known as Web 3.0,has recently been attracting increasing attention from industry and academia.Leveraging the potential of blockchain technologies,Web3 has emerged as a pivotal foundation in the realm of metaverse development,which is considered by many as the next-generation Internet.Specifically,Web3 technologies such as smart contracts and protocols like non-fungible tokens(NFTs)have supported the immersive and content-rich experience of current Web3 metaverse projects.

视界

The 10th Nanyang Culture Festival opened in Wenchang,south China’s Hainan Province,on April 5,2024,attracting 500 participants from 38 countries and regions to discuss future development and cooperation.Pictured are performers presenting the Malaysian song and dance Moon Kite at the opening ceremony.

Five Principles as Relevant Today as 70 Years Ago

The Chinese initiative has become an international consensus with productive actions.A conference marking the 70th anniversary of the Five Principles of Peaceful Coexistence,a cornerstone of Chinese foreign policy,was held in Beijing on June 28,attracting attendees from around the world,including former political leaders from some 20 countries.At the conference,President Xi Jinping made an important speech in which he said that the Five Principles“marked a groundbreaking and epoch-making achievement in the history of international relations.”

Chinese New Year Folk Culture Adds Impetus to Guizhou's Colorful Tourism Economy

During the Chinese New Year in 2024,a series of traditional folk activities were held all over Guizhou,attracting a large number of travelers,with the number of received travelers and comprehensive income of Guizhou reaching a new high.

四部门联合印发《国家人工智能产业综合标准化体系建设指南(2024版)》

Artificial intelligence(AI)has become a vital driving force of a new round of technological revolution and industrial transformation,attracting global concern.Recently,the National Guide on the Construction of Comprehensive Standardization System for the Artificial Intelligence Industry(2024)was jointly published by Ministry of Industry and Information Technology,Office of the Central Cyberspace Affairs Commission,National Development and Reform Commission,and Standardization Administration of China(SAC).According to the Guide,by 2026,the linkage between China’s standards and industrial technological innovation will be continuously improved,and more than 50 new national and sectoral standards will be developed,to speed up the establishment of the standards system to lead the high-quality development of AI.More than 1,000 companies will carry out standards publicity,implementation,and promotion,demonstrating the supporting role of standards in innovative development of enterprises.Moreover,China will participate in the development of over 20 relevant international standards to facilitate the global development of the AI industry.

FINE TUNING THE MARKET

Promoting social capital investment and mobilizing private enterprises are important tools to promote economic development,expand social employment,solve livelihood problems,and achieve common prosperity.However,in recent years,the growth rate of private investment has been dampened by the COVID-19pandemic and other negative factors,making the need to improve the vitality of private investment more dire.The Public-Private Partnership(PPP) mode has been an effective path to improve infrastructure and public service supply by attracting private capital to participate in the supply of public goods to better meet public demand and alleviate financial pressure on local governments.

Beijing on a Picture Postcard

A Danish fan of Chinese culture has found an innovative way of sharing the Chinese capital’s history with more people.A visit to the bustling Qianmen Street in downtown Beijing might lead you to a quaint small shop in the Yangmeizhu Byway in the Dashilar area,a famous ancient commercial zone that is a prime tourist attraction today.Unlike other modern cafes,restaurants,and cultural shops in the street,the shop,Beijing Postcards,started by the Danish Lars Ulrik Thom,sells cultural and creative products with historical elements.As a gallery on Beijing’s history,it has become a communication space connecting residents and tourists with the memory of old Beijing.

Differential Effect of Gender & Snapchat Filter Types on Attraction Perception

The focus of this study was to examine how different factors including gender of the person on Snapchat and Snapchat filter types (no filter vs. pretty filter vs. frown filter vs. dog filter vs. sponsored filter) influence social and physical attraction perception of a person. An experiment manipulating both factors was conducted (N = 226). Results showed female on Snapchat was rated significantly higher on both social and physical attraction than their male counterparts. The use of different types of Snapchat filters had a significant effect on social attraction, but not on physical attraction. Moreover, there was a significant interaction effect between gender of the person on Snapchat and the types of Snapchat filter used on the social attraction rating.

On the Local Convergence and Dynamics of New Iterative Method with Sixth Order Convergence

In this paper,we construct a new sixth order iterative method for solving nonlinear equations.The local convergence and order of convergence of the new iterative method is demonstrated.In order to check the validity of the new iterative method,we employ several chemical engineering applications and academic test problems.Numerical results show the good numerical performance of the new iterative method.Moreover,the dynamical study of the new method also supports the theoretical results.

The Substructure of Elementary Particles Demonstrated by the I-Theory

Present studies in physics assume that elementary particles are the building blocks of all matter, and that they are zero-dimensional objects which do not occupy space. The new I-Theory predicts that elementary particles do indeed have a substructure, three dimensions, and occupy space, being composed of fundamental particles called I-particles. In this article we identify the substructural pattern of elementary particles and define the quanta of energy that form each elementary particle. We demonstrate that the substructure comprises two classes of quanta which we call “attraction quanta” and “repulsion quanta”. We create a model that defines the rest-mass energy of each elementary particle and can predict new particles. Lastly, in order to incorporate this knowledge into the contemporary models of science, a revised periodic table is proposed.

Renovation,Preservation,and Research--That is How They Preserve the Potala Palace

AImost everyone who walks into the Potala Palace experiences a breathtaking moment as they observe its grand building complex.After more than 1300 years,the Potala Palace still stands tall,attracting a largenumber of tourists every year.Built upon a mountain and standing in a geographically challenging location,the Potala Palace frequently encounters various natural disasters,leading to different dangers and potential damages,such as wall cracks and insect erosion of architectural timbers.Fortunately,there are dedicated groups of people who work tirelessly for the conservation of this ancient grand architecture.They have devoted their youth and even their entire lives to accompany this ancient building complex through at least a part of history.These ordinary yet extraordinary craftsmen form a unit under the Administration Department ofthePotala Palace,knownas theMaintenanceSection.