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Luminescence regulation of Sb^(3+)in 0D hybrid metal halides by hydrogen bond network for optical anti-counterfeiting
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作者 Dehai Liang Saif M.H.Qaid +5 位作者 Xin Yang Shuangyi Zhao Binbin Luo Wensi Cai Qingkai Qian Zhigang Zang 《Opto-Electronic Advances》 SCIE EI CAS CSCD 2024年第3期15-25,共11页
The Sb^(3+) doping strategy has been proven to be an effective way to regulate the band gap and improve the photophysical properties of organic-inorganic hybrid metal halides(OIHMHs).However,the emission of Sb^(3+) io... The Sb^(3+) doping strategy has been proven to be an effective way to regulate the band gap and improve the photophysical properties of organic-inorganic hybrid metal halides(OIHMHs).However,the emission of Sb^(3+) ions in OIHMHs is primarily confined to the low energy region,resulting in yellow or red emissions.To date,there are few reports about green emission of Sb^(3+)-doped OIHMHs.Here,we present a novel approach for regulating the luminescence of Sb^(3+) ions in 0D C_(10)H_(2)_(2)N_(6)InCl_(7)·H_(2)O via hydrogen bond network,in which water molecules act as agents for hydrogen bonding.Sb^(3+)-doped C_(10)H_(2)2N_(6)InCl_(7)·H_(2)O shows a broadband green emission peaking at 540 nm and a high photoluminescence quantum yield(PLQY)of 80%.It is found that the intense green emission stems from the radiative recombination of the self-trapped excitons(STEs).Upon removal of water molecules with heat,C_(10)H_(2)_(2)N_(6)In_(1-x)Sb_(x)Cl_(7) generates yellow emis-sion,attributed to the breaking of the hydrogen bond network and large structural distortions of excited state.Once water molecules are adsorbed by C_(10)H_(2)_(2)N_(6)In_(1-x)Sb_(x)Cl_(7),it can subsequently emit green light.This water-induced reversible emission switching is successfully used for optical security and information encryption.Our findings expand the under-standing of how the local coordination structure influences the photophysical mechanism in Sb^(3+)-doped metal halides and provide a novel method to control the STEs emission. 展开更多
关键词 indium-based halides Sb^(3+)doping hydrogen bonding network optical anti-counterfeiting
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High-resolution imaging of magnetic fields of banknote anti-counterfeiting strip using fiber diamond probe
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作者 赵旭彤 何飞越 +5 位作者 薛雅文 马文豪 殷筱晗 夏圣开 曾明菁 杜关祥 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第4期720-727,共8页
Counterfeiting of modern banknotes poses a significant challenge,prompting the use of various preventive measures.One such measure is the magnetic anti-counterfeiting strip.However,due to its inherent weak magnetic pr... Counterfeiting of modern banknotes poses a significant challenge,prompting the use of various preventive measures.One such measure is the magnetic anti-counterfeiting strip.However,due to its inherent weak magnetic properties,visualizing its magnetic distribution has been a longstanding challenge.In this work,we introduce an innovative method by using a fiber optic diamond probe,a highly sensitive quantum sensor designed specifically for detecting extremely weak magnetic fields.We employ this probe to achieve high-resolution imaging of the magnetic fields associated with the RMB 50denomination anti-counterfeiting strip.Additionally,we conduct computer simulations by using COMSOL Multiphysics software to deduce the potential geometric characteristics and material composition of the magnetic region within the anti-counterfeiting strip.The findings and method presented in this study hold broader significance,extending the RMB 50 denomination to various denominations of the Chinese currency and other items that employ magnetic anti-counterfeiting strips.These advances have the potential to significantly improve and promote security measures in order to prevent the banknotes from being counterfeited. 展开更多
关键词 banknote anti-counterfeiting strip nitrogen-vacancy(NV)centers magnetic field imaging numerical simulation
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Water-sensitive multicolor luminescence in lanthanide-organic framework for anti-counterfeiting 被引量:1
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作者 Tifeng Xia Wenqian Cao +2 位作者 Yuanjing Cui Yu Yang Guodong Qian 《Opto-Electronic Advances》 SCIE 2021年第8期8-15,共8页
The developme nt of high-level an ti-co un terfeiti ng tech niq ues is of great sig nifica nee in econo mics and security issues.However,i ntricate read ing methods are required to obta in multi-level info rmati on st... The developme nt of high-level an ti-co un terfeiti ng tech niq ues is of great sig nifica nee in econo mics and security issues.However,i ntricate read ing methods are required to obta in multi-level info rmati on stored in differe nt colors,which greatly limits the applicati on of an ti-co un terfeit ing tech no logy on sol ving real world problems.Here in,we realize multicolor information anti-counterfeiting under simply external stimulation by utilizing the functional groups and multiple emission centers of lanthanide metal organic framework(Ln-MOFs)to tune luminescence color.Water responsive multicolor luminescence represented by both the tunable color from red to blue within the visible region and high sensitive responsivity has bee n achieved,owing to the in creased nonr adiative decay pathways and enhan ced Eu3+-to-liga nd en ergy back tra nsfer.Remarkably,i nfo rmatio n hidde n in differe nt colors n eeds to be read with a specific water content,which can be used as an en crypti on key to en sure the security of the info rmati on for high-level an ti-co un terfeiti ng. 展开更多
关键词 metal-organic framework multicolor luminescence anti-counterfeiting
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RFID Anti-Counterfeiting for Retailing Systems 被引量:1
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作者 Duy-Thinh Tran Sung Je Hong 《Journal of Applied Mathematics and Physics》 2015年第1期1-9,共9页
Counterfeiting is one of the most serious problems in the consumer market. One promising approach for anti-counterfeiting is to attach a low-cost Radio-frequency Identification (RFID) tag to the product authentication... Counterfeiting is one of the most serious problems in the consumer market. One promising approach for anti-counterfeiting is to attach a low-cost Radio-frequency Identification (RFID) tag to the product authentication. In this paper, we propose an RFID system for detecting counterfeiting products. This RFID system consists of the tag authentication protocol and the database correction protocol. We use the tag authentication protocol for authenticating tags without revealing their sensitive information. This protocol also allows the customer to freely inquire the tag. To prevent the widespread of the counterfeit products, we use the tag status information along with tag identity information. Meanwhile, the database correction protocol guarantees the correctness of the tag status. Our anti-counterfeiting system is the first work considering the seller who plays an important role in the consumer product supply chain. Finally, we show that anti-counterfeiting system is quite secure against counterfeiting and the tag authentication protocol is lightweight enough to be implemented in RFID-based applications. 展开更多
关键词 SECURE RFID System AUTHENTICATION Identification CRYPTOGRAPHIC One-Way Function Counterfeiting anti-counterfeiting LIGHTWEIGHT
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Identification of a Printed Anti-Counterfeiting Code Based on Feature Guidance Double Pool Attention Networks
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作者 Changhui You Hong Zheng +3 位作者 Zhongyuan Guo Tianyu Wang Jianping Ju Xi Li 《Computers, Materials & Continua》 SCIE EI 2023年第5期3431-3452,共22页
The authenticity identification of anti-counterfeiting codes based on mobile phone platforms is affected by lighting environment,photographing habits,camera resolution and other factors,resulting in poor collection qu... The authenticity identification of anti-counterfeiting codes based on mobile phone platforms is affected by lighting environment,photographing habits,camera resolution and other factors,resulting in poor collection quality of anti-counterfeiting codes and weak differentiation of anti-counterfeiting codes for high-quality counterfeits.Developing an anticounterfeiting code authentication algorithm based on mobile phones is of great commercial value.Although the existing algorithms developed based on special equipment can effectively identify forged anti-counterfeiting codes,the anti-counterfeiting code identification scheme based on mobile phones is still in its infancy.To address the small differences in texture features,low response speed and excessively large deep learning models used in mobile phone anti-counterfeiting and identification scenarios,we propose a feature-guided double pool attention network(FG-DPANet)to solve the reprinting forgery problem of printing anti-counterfeiting codes.To address the slight differences in texture features in high-quality reprinted anti-counterfeiting codes,we propose a feature guidance algorithm that creatively combines the texture features and the inherent noise feature of the scanner and printer introduced in the reprinting process to identify anti-counterfeiting code authenticity.The introduction of noise features effectively makes up for the small texture difference of high-quality anti-counterfeiting codes.The double pool attention network(DPANet)is a lightweight double pool attention residual network.Under the condition of ensuring detection accuracy,DPANet can simplify the network structure as much as possible,improve the network reasoning speed,and run better on mobile devices with low computing power.We conducted a series of experiments to evaluate the FG-DPANet proposed in this paper.Experimental results show that the proposed FG-DPANet can resist highquality and small-size anti-counterfeiting code reprint forgery.By comparing with the existing algorithm based on texture,it is shown that the proposed method has a higher authentication accuracy.Last but not least,the proposed scheme has been evaluated in the anti-counterfeiting code blurring scene,and the results show that our proposed method can well resist slight blurring of anti-counterfeiting images. 展开更多
关键词 Deep learning digital image anti-counterfeiting feature guidance image processing reprint forgery
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Material Analysis of Traditional Folk Dwellings and Its Modern Inheritance:A Case Study of Traditional Folk Dwellings in Hunan Province
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作者 WEN Wen 《Journal of Landscape Research》 2024年第4期31-34,共4页
Traditional folk dwellings contain rich cultural connotations and plain architectural techniques.In architecture,material is the most fundamental thing,different materials can demonstrate different architectural forms... Traditional folk dwellings contain rich cultural connotations and plain architectural techniques.In architecture,material is the most fundamental thing,different materials can demonstrate different architectural forms,and reflect local characteristics and change of the time.Therefore,it is of great significance to explore the material selection of traditional Chinese folk dwellings.The paper took traditional folk dwellings in Hunan for example to analyze the regional materials and construction of these dwellings,discussed the application of traditional materials in modern architecture,used some cases to explore the innovative application of traditional materials,so as to figure out the new direction of applying traditional materials,and provide references for the construction of modern architecture. 展开更多
关键词 Traditional folk dwellings Building materials HUNAN
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Relation and Relationships Between Folk Literature and Classical Literature:Taking Autochthony as a Case Study
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作者 YAN Di 《Cultural and Religious Studies》 2024年第10期607-615,共9页
According to current discipline classification,folk literature is usually categorized as an individual research field,distinguished from classical literature or classical canon,which leads to the fact that in current ... According to current discipline classification,folk literature is usually categorized as an individual research field,distinguished from classical literature or classical canon,which leads to the fact that in current research,the study of folk literature is often separated from the study of classical texts,or even opposed to it.This paper intends to review the relations and relationships between the two and argues that,at least,in ancient Greek world of culture,there is a considerable intersection between folk literature and classical literature.In many cases,a myth appeared both in the two literary fields,and thus these two fields were often intertwined and in conversation.Taking Athenian autochthony as a case study,this paper shows that this myth not only appeared as a folk story in daily occasions such as symposium,architecture,and vase painting,but also entered classic texts such as the tragic works of the three great tragedians and even Plato’s philosophical works,becoming one part of“classical literature”.By examining the application of the myth in folk literature and classical literature,it can be seen that in ancient Greece,folk and classical literature not only communicated and borrowed from each other,but also formed a dialogue between the two,thus constructing a lively and living literary world. 展开更多
关键词 folk literature classical literature ancient Greek myth autochthony
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The Importance of Breathing Training in Folk Dance Teaching
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作者 Xiaowei Sun 《Journal of Contemporary Educational Research》 2024年第4期187-192,共6页
The importance of breathing training in dance teaching is reflected in the two aspects of enhancing the quality of dance movements and sublimating the connotation of dance movements.For example,high-quality breathing ... The importance of breathing training in dance teaching is reflected in the two aspects of enhancing the quality of dance movements and sublimating the connotation of dance movements.For example,high-quality breathing can help performers complete the dance movements and improve the coordination of the movements;at the same time,the unique body rhythm formed by breathing can strengthen the visual effect of the performance and convey its spirit and soul to the audience.This requires folk dance teachers to carry out relevant training and teaching activities based on the categories and skills of dance breathing,such as changing students’ideological cognition,developing periodic breathing training courses,providing personalized guidance to students,and allowing students to adjust their learning and practice methods in the evaluation. 展开更多
关键词 folk dance teaching Breathing training IMPORTANCE Training methods
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The Impact of Contextual Teaching Method on Sichuan Folk Song Education and Students’Musical Expressiveness
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作者 Jing Li 《Journal of Contemporary Educational Research》 2024年第9期100-105,共6页
This study explores the application of the contextual teaching method in Sichuan folk song education and its impact on students’musical expressiveness.By incorporating contextual teaching methods in music classes,thi... This study explores the application of the contextual teaching method in Sichuan folk song education and its impact on students’musical expressiveness.By incorporating contextual teaching methods in music classes,this research investigates the effectiveness of this approach in enhancing students’understanding of Sichuan folk songs and improving their musical expressiveness and emotional expression.A mixed-method research approach is employed,utilizing classroom observations,questionnaires,interviews,and statistical analysis to assess the practical outcomes of contextual teaching in folk song education. 展开更多
关键词 Contextual teaching Sichuan folk songs Musical expressiveness Music education
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南阳市宛拾叁民俗文化园旅游美食品牌建设研究
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作者 李瑞 孙登 李金垚 《南阳师范学院学报》 CAS 2025年第1期18-24,共7页
成功的旅游美食品牌能够增强目的地旅游市场的吸引力,拓展游客的多维度文化体验,还可以促进文旅产业优化升级,实现文旅富民,因此,目的地旅游美食品牌建设至关重要。通过实地调研和问卷调查,深入分析南阳市宛拾叁民俗文化园旅游美食的资... 成功的旅游美食品牌能够增强目的地旅游市场的吸引力,拓展游客的多维度文化体验,还可以促进文旅产业优化升级,实现文旅富民,因此,目的地旅游美食品牌建设至关重要。通过实地调研和问卷调查,深入分析南阳市宛拾叁民俗文化园旅游美食的资源优势以及在品牌建设方面存在的问题,同时借鉴缙云烧饼、淄博烧烤品牌建设的经验,提出南阳市宛拾叁民俗文化园旅游美食品牌建设的具体策略:提升品牌情感价值、聚焦代表性美食、多渠道宣传营销、品牌联合合作共赢、政府支持协调等,从而实现提升品牌知名度,推动品牌成长的目的。 展开更多
关键词 旅游目的地 旅游美食 品牌建设 宛拾叁民俗文化园
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数字技术驱动下中国民歌变革及应对策略研究
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作者 胡娟 方元 《湖北科技学院学报》 2025年第1期80-85,共6页
数字科技的崛起对音乐创作和传播方式带来了革命性的变化,同时也对中国民歌的传承和发展提出了新的课题。本研究旨在深入探讨数字化发展对中国民歌的影响,包括作品表演形式与作品的传承与创新,并详细分析其所面临的挑战和机遇,提出相应... 数字科技的崛起对音乐创作和传播方式带来了革命性的变化,同时也对中国民歌的传承和发展提出了新的课题。本研究旨在深入探讨数字化发展对中国民歌的影响,包括作品表演形式与作品的传承与创新,并详细分析其所面临的挑战和机遇,提出相应的对策和建议。通过理论支持和实践指导,期望为传承和创新中国民歌作出积极贡献。 展开更多
关键词 数字技术 中国民歌 变革 应对
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Influence of patio on indoor environment in a Chinese traditional folk house in summer 被引量:6
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作者 解明镜 张国强 +2 位作者 徐峰 周晋 张泉 《Journal of Southeast University(English Edition)》 EI CAS 2010年第2期165-168,共4页
A case study is performed on the influence of the patio on the indoor environment of a traditional folk house group,named Zhangguying village in Hunan province,in the summer of 2007.Measurements include indoor and out... A case study is performed on the influence of the patio on the indoor environment of a traditional folk house group,named Zhangguying village in Hunan province,in the summer of 2007.Measurements include indoor and outdoor air temperature,indoor and outdoor illuminance,indoor and outdoor air speed,and carried out from August 5th to 10th.The results show that the patio,acting as a "buffer zone",can reduce the ambient impacts on the indoor thermal environment of rooms because the temperature of the patio is lower than that of the outdoor temperature but higher than that of the rooms.The patio can improve the indoor lighting environment because the illuminance of the patio is lower than that of outdoor and higher than that of the rooms.But the effect is too limited,because the illuminance of the rooms is lower than the national standards.This study shows that the shading design is the primary consideration in this kind of climate.The wind speed of the patio is stable and similar to that of the hall and the stack effect of the patio is not obvious.It shows that the patio is useful for natural ventilation,caused by wind pressure,in summer. 展开更多
关键词 PATIO traditional folk house indoor environment
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Influence of site selection on natural ventilation in Chinese traditional folk house 被引量:4
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作者 徐峰 解明镜 +2 位作者 张泉 张国强 王科 《Journal of Southeast University(English Edition)》 EI CAS 2010年第2期161-164,共4页
The relationship between the site selection of a hilly terrain and the natural ventilation of the Dangdamen building complex,which is a traditional folk house,is revealed by a computational fluid dynamics(CFD)simula... The relationship between the site selection of a hilly terrain and the natural ventilation of the Dangdamen building complex,which is a traditional folk house,is revealed by a computational fluid dynamics(CFD)simulation.The wind press and speed distributions around the building in four cases with different weather conditions and topographies are simulated.The simulation results show that a hill can reduce the absolute values of the wind pressure at the windward and leeward sides of the building.The encouraging effect of the patio on the natural ventilation in a terrain with a hill is greater than that without a hill.The same situation occurs when comparing the patio effects between summer and winter.The wind speed around the building can be reduced by the hill as it is an obstacle and the degrees of the influence of the hill in summer and in winter are quite different because of different wind directions.The analysis results show that this kind of site selection,with the hill to the north,is a suitable way to settle the conflict of the natural ventilation requirements in summer and in winter under subtropical climate conditions,especially in houses with patios. 展开更多
关键词 site selection traditional folk house natural ventilation computational fluid dynamics simulation
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Landscape Design of Folk Workshop Garden in Jifa Leisure Farm of Beidaihe 被引量:1
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作者 杜洁 巩如英 《Journal of Landscape Research》 2009年第10期5-8,共4页
In view of the problems in the landscape design of present leisure farms,Folk Workshop Garden in Jifa Leisure Farm of Beidaihe is taken for an example,general conditions of the base,design layout and functional zoning... In view of the problems in the landscape design of present leisure farms,Folk Workshop Garden in Jifa Leisure Farm of Beidaihe is taken for an example,general conditions of the base,design layout and functional zoning are analyzed to provide advices for the landscape design of similar leisure farms. 展开更多
关键词 LEISURE FARM Beidaihe Jifa folk WORKSHOP LANDSCAPE design
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Summary of the Studies on Classical Chinese Folk Houses 被引量:1
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作者 陈文捷 黄荣娟 温丽玲 《Journal of Landscape Research》 2009年第11期77-85,共9页
Research fruits in classical Chinese folk houses since 1980s were summarized in this study from various perspectives,such as architectural structure,spatial layout,decoration,aesthetic value,regional features and hist... Research fruits in classical Chinese folk houses since 1980s were summarized in this study from various perspectives,such as architectural structure,spatial layout,decoration,aesthetic value,regional features and historical attributes,meanwhile,the future study orientation in this field was also discussed. 展开更多
关键词 Classical Chinese folk houses ARCHITECTURE Landscape art TOURISM
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Analysis of the Spatial Features of the Traditional Folk Houses in Three Gorges Region 被引量:1
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作者 周传发 《Journal of Landscape Research》 2011年第7期92-94,共3页
The spatial composition of natural environment and settlement in the Three Gorges region along the Yangtze River was analyzed from a macro perspective,which emphasized its characteristics of the interdependence among ... The spatial composition of natural environment and settlement in the Three Gorges region along the Yangtze River was analyzed from a macro perspective,which emphasized its characteristics of the interdependence among its buildings,landform and waterscape,between buildings and landscape,and integration of nature and human culture.Then the spatial features of folk houses were analyzed,while special attention was paid to its "upward","grey",and dynamic characteristics.The courtyard-type residence and stilted building in South China were taken as examples in order to explain their exterior spatial characteristics,and the interior spatial features were analyzed from the pursuit of courtyard layout,the preference of courtyard space and the emphasis of central room space.The paper exposed the builders' rational thinking about natural environment and living place conveyed through the traditional folk houses,as well as the practical value of this architectural style in the special natural environment of the Three Gorges region,and explained the artistic achievements from the integration of architecture and environment,aiming to provide references for the urban and living environment construction in this region during the "Post Three-Gorges Project Era". 展开更多
关键词 THREE Gorges folk houses SPATIAL FEATURES BUILDINGS
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Structure and Construction Pattern of Folk Dwellings of the Dai Nationality in Guanchun Village of Dehong Prefecture,Yunnan Province
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作者 李曙婷 李志民 周崐 《Journal of Landscape Research》 2011年第7期42-44,共3页
Evolution pattern of folk dwellings of the Dai Nationality in Guanchun Village,Dehong Prefecture,Yunnan Province is discussed in this study,and Field Study of the anthropology is applied to study family structure and ... Evolution pattern of folk dwellings of the Dai Nationality in Guanchun Village,Dehong Prefecture,Yunnan Province is discussed in this study,and Field Study of the anthropology is applied to study family structure and use of residential spaces in this village.The study shows that structure of traditional residence is changing,traditional buildings cannot meet demands of modern life due to the changing lifestyle;it is a trend that traditional building materials like brick and wood are to be substituted by new materials.It implies that useful elements of traditional living styles and construction patterns should be refined in the update of folk dwellings in the village ofminorities,and combined with modern building materials and techniques to satisfy the demands of modern life. 展开更多
关键词 The Dai NATIONALITY folk DWELLINGS Spatial composition CONSTRUCTION PATTERN
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Primary Study on the Artistic Value of Interior Decoration of Ancient Huizhou Folk Houses
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作者 谢震林 谢珂 《Journal of Landscape Research》 2009年第4期35-38,65,共5页
From the creation,materials,colors and technical artistic characteristics of exterior and exterior spatial decoration,the artistic value of ancient Huizhou folk houses were analyzed.
关键词 ANCIENT HUIZHOU folk houses INTERIOR DECORATION Traditional culture ARTISTIC value
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Landscape Planning and Design of Folk Culture Block Based on Theory of Three Elements of Landscape
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作者 吴忠军 胡林波 梁莉清 《Journal of Landscape Research》 2010年第9期24-28,共5页
This paper firstly defined the concept of folk culture block,and then analyzed the significance and planning principle of landscape design in folk culture block,and at last expounded landscape planning and design of f... This paper firstly defined the concept of folk culture block,and then analyzed the significance and planning principle of landscape design in folk culture block,and at last expounded landscape planning and design of folk culture block based on theory of three elements of landscape. 展开更多
关键词 THEORY of THREE ELEMENTS of LANDSCAPE folk culture BLOCK LANDSCAPE planning and design
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Assessment and Analysis of the Tourism Development Value of Folk House Resources in Three Gorges Area
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作者 周传发 《Journal of Landscape Research》 2009年第2期55-60,共6页
This study aimed to introduce the characteristics and value of folk house resources in Three Gorges area,analyze the influence and opportunities for the development of folk house resources in this area brought by the ... This study aimed to introduce the characteristics and value of folk house resources in Three Gorges area,analyze the influence and opportunities for the development of folk house resources in this area brought by the Three Gorge Project,and put forward the ideas and countermeasures for tourism development of folk house resources in Three Gorges area. 展开更多
关键词 THREE Gorges folk HOUSE RESOURCES CULTURE TOURISM
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