Na Ren
Biographic Data
| ID | 1246725 |
|---|---|
| NAME | Na Ren |
| FAMILY NAME | Ren |
| SIGNATURE | REN N |
| AFFILIATIONS | Nanjing Normal University |
| ORCID | 0000-0002-4783-8295 |
| VERIFIED | Yes |
| TOTAL WORKS | 14 |
| TOTAL CITATIONS | 43 |
| AUTHOR COUNT | 14 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2013 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 4 |
A Blockchain Copyright Protection Model Based on Vector Map Unique Identification
Combining blockchain technology with digital watermarking presents an efficient solution for safeguarding vector map files. However, the large data volume and stringent confidentiality requirements of vector maps pose significant challenges for direct registration on blockchain platforms. To overcome these limitations, this paper proposes a blockchain-based copyright protection model utilizing unique identifiers (BCPM-UI). The model employs a dis…
Multi-Instance Zero-Watermarking Algorithm for Vector Geographic Data
To address the variability and complexity of attack types, this paper proposes a multi-instance zero-watermarking algorithm that goes beyond the conventional one-to-one watermarking approach. Inspired by the class-instance paradigm in object-oriented programming, this algorithm constructs multiple zero watermarks from a single vector geographic dataset to enhance resilience against diverse attacks. Normalization is applied to eliminate dimensiona…
Asymmetric Fingerprint Scheme for Vector Geographic Data Based on Smart Contracts
Existing vector geographic data transaction schemes are typically merchant-controlled, hindering fair ownership tracing and impartial arbitration. To address this, we propose an asymmetric digital fingerprinting scheme based on smart contracts. In our approach, the user encrypts a proof fingerprint with a public key and sends it to the merchant; the merchant leverages the additive homomorphic property of the Paillier cryptosystem to embed the enc…
Risk profiling of tobacco epidemic and estimated number of smokers living in China: A cross-sectional study based on PBICR
Our study investigated the prevalence of smokers and exposure to secondhand smoke in different spatial areas of China and explored various factors influencing the smoking prevalence. For the first time, our study applied Bayesian geostatistical modeling to generate a risk prediction map of smoking prevalence, which provides a more intuitive and clear understanding of the spatial disparities in smoking prevalence across different geographical regi…
Lossless Watermarking Algorithm for Geographic Point Cloud Data Based on Vertical Stability
With the increasing demand for high-precision and difficult-to-obtain geospatial point cloud data copyright protection in military, scientific research, and other fields, research on lossless watermarking is receiving more and more attention. However, most of the current geospatial point cloud data watermarking algorithms embed copyright information by modifying vertex coordinate values, which not only damages the data accuracy and quality but ma…
Between positionality and nudging: A rising China and Chinese voluntary associations in Southeast Asia
Drawing upon cases studies from Southeast Asia, especially Singapore and Malaysia, this article addresses the following questions pertaining to the rise of China and its impact upon Chinese voluntary associations (CVAs) in the region over the past two decades. By employing theoretical insights of positionality, nudging and de‐territorialisation and by focusing on various strategies pursued respectively by CVAs and the state, we conclude: (i) the …
Southeast Asian Chinese engage a rising China: Business Associations, Institutionalised Transnationalism, and the Networked State
With the launching of China’s ambitious Belt and Road Initiative (BRI) in 2013, Chinese diaspora in Southeast Asia have been confronted with both growing business opportunities and emerging challenges. How do ethnic Chinese businesses and their associations respond to the BRI, and by extension, a rising China? How do transnationalism and the nation-states shape their engagement strategies? What are the implications of the Southeast Asian experien…
Copyright Protection Based on Zero Watermarking and Blockchain for Vector Maps
Zero watermarking does not alter the original information contained in vector map data and provides perfect imperceptibility. The use of zero watermarking for data copyright protection has become a significant trend in digital watermarking research. However, zero watermarking encounters tremendous obstacles to its development and application because of its requirement to store copyright information with a third party and its difficulty in confirm…
Zero Watermarking for the TIN DEM Data Based on the Edge Length
How to keep the fidelity of the digital elevation model (DEM) data is a crucial problem in the current watermarking research, as the watermarked DEM data need to preserve their accuracy. We proposed a zero watermarking method for the triangulated irregular network (TIN) DEM data. It takes full advantage of the characteristics of the edge length in the TIN DEM data. First, the radio of the edge lengths is quantified to the watermark index, and the…
Transnational Networks and Institutional Embeddedness: Reengagement of the New Generation of Malaysian Chinese Entrepreneurs with China
Blind Digital Watermarking Algorithm against Projection Transformation for Vector Geographic Data
Projection transformation is an important part of geographic analysis in geographic information systems, which are particularly common for vector geographic data. However, achieving resistance to projection transformation attacks on watermarking for vector geographic data is still a challenging task. We proposed a digital watermarking against projection transformation based on feature invariants for vector geographic data in this paper. Firstly, …
Domesticating 'transnational cultural capital: The Chinese state and diasporic technopreneur returnees
With China’s ongoing transition from a labour-intensive economy to a knowledge-driven one, the state has vigorously promoted diasporic Chinese technopreneur returnees as a new dynamic \nforce for the nation’s economic development. This article examines the technopreneurs’ interactions with the state, focusing on how the government has orientated and structured them into the state’s national and globalisation agendas. We argue that the acquisition…
Traversing between transnationalism and integration: Dual embeddedness of new Chinese immigrant entrepreneurs in Singapore
Transnationalism was initially proposed as an alternative perspective to the assimilation and integration frameworks, which tend to prioritize the nation-state over transnational mobility. Policy-makers in host societies usually regard transnational migrants’ close linkages with the homeland as a sign of social and political detachment, thus reducing their contributions to the host land. Findings from our research on Chinese new immigrant entrepr…
Context Effect or Automatic Process? The Implicit Attitude of Undergraduates to Old People: Context Effect or Automatic Process? The Implicit Attitude of Undergraduates to Old People
摘要: 使用词汇判断任务和新近发展起来的情感错误归因程序(AMP)研究范式, 探讨大学生对老年人的内隐态度是否具有情境效应。实验一的结果表明, 大学生被试并不认为老年人比年轻人具有更高的专业能力。实验二和实验三采用被试间设计, 在典型的AMP中分别添加了情境因素, 结果都表明被试在职业、家庭、美德等情境中对老年人没有给出更积极的内隐评价; 被试对中性数字启动的做出的内隐评价比对老年人启动的内隐评价的更积极
Southeast Asian Chinese engage a rising China: Business Associations, Institutionalised Transnationalism, and the Networked State
With the launching of China’s ambitious Belt and Road Initiative (BRI) in 2013, Chinese diaspora in Southeast Asia have been confronted with both growing business opportunities and emerging challenges. How do ethnic Chinese businesses and their associations respond to the BRI, and by extension, a rising China? How do transnationalism and the nation-states shape their engagement strategies? What are the implications of the Southeast Asian experien…
Traversing between transnationalism and integration: Dual embeddedness of new Chinese immigrant entrepreneurs in Singapore
Transnationalism was initially proposed as an alternative perspective to the assimilation and integration frameworks, which tend to prioritize the nation-state over transnational mobility. Policy-makers in host societies usually regard transnational migrants’ close linkages with the homeland as a sign of social and political detachment, thus reducing their contributions to the host land. Findings from our research on Chinese new immigrant entrepr…
Domesticating 'transnational cultural capital: The Chinese state and diasporic technopreneur returnees
With China’s ongoing transition from a labour-intensive economy to a knowledge-driven one, the state has vigorously promoted diasporic Chinese technopreneur returnees as a new dynamic \nforce for the nation’s economic development. This article examines the technopreneurs’ interactions with the state, focusing on how the government has orientated and structured them into the state’s national and globalisation agendas. We argue that the acquisition…
Between positionality and nudging: A rising China and Chinese voluntary associations in Southeast Asia
Drawing upon cases studies from Southeast Asia, especially Singapore and Malaysia, this article addresses the following questions pertaining to the rise of China and its impact upon Chinese voluntary associations (CVAs) in the region over the past two decades. By employing theoretical insights of positionality, nudging and de‐territorialisation and by focusing on various strategies pursued respectively by CVAs and the state, we conclude: (i) the …
Transnational Networks and Institutional Embeddedness: Reengagement of the New Generation of Malaysian Chinese Entrepreneurs with China
Context Effect or Automatic Process? The Implicit Attitude of Undergraduates to Old People: Context Effect or Automatic Process? The Implicit Attitude of Undergraduates to Old People
摘要: 使用词汇判断任务和新近发展起来的情感错误归因程序(AMP)研究范式, 探讨大学生对老年人的内隐态度是否具有情境效应。实验一的结果表明, 大学生被试并不认为老年人比年轻人具有更高的专业能力。实验二和实验三采用被试间设计, 在典型的AMP中分别添加了情境因素, 结果都表明被试在职业、家庭、美德等情境中对老年人没有给出更积极的内隐评价; 被试对中性数字启动的做出的内隐评价比对老年人启动的内隐评价的更积极
Traversing between transnationalism and integration: Dual embeddedness of new Chinese immigrant entrepreneurs in Singapore
Transnationalism was initially proposed as an alternative perspective to the assimilation and integration frameworks, which tend to prioritize the nation-state over transnational mobility. Policy-makers in host societies usually regard transnational migrants’ close linkages with the homeland as a sign of social and political detachment, thus reducing their contributions to the host land. Findings from our research on Chinese new immigrant entrepr…
Domesticating 'transnational cultural capital: The Chinese state and diasporic technopreneur returnees
With China’s ongoing transition from a labour-intensive economy to a knowledge-driven one, the state has vigorously promoted diasporic Chinese technopreneur returnees as a new dynamic \nforce for the nation’s economic development. This article examines the technopreneurs’ interactions with the state, focusing on how the government has orientated and structured them into the state’s national and globalisation agendas. We argue that the acquisition…
Blind Digital Watermarking Algorithm against Projection Transformation for Vector Geographic Data
Projection transformation is an important part of geographic analysis in geographic information systems, which are particularly common for vector geographic data. However, achieving resistance to projection transformation attacks on watermarking for vector geographic data is still a challenging task. We proposed a digital watermarking against projection transformation based on feature invariants for vector geographic data in this paper. Firstly, …
Copyright Protection Based on Zero Watermarking and Blockchain for Vector Maps
Zero watermarking does not alter the original information contained in vector map data and provides perfect imperceptibility. The use of zero watermarking for data copyright protection has become a significant trend in digital watermarking research. However, zero watermarking encounters tremendous obstacles to its development and application because of its requirement to store copyright information with a third party and its difficulty in confirm…
Zero Watermarking for the TIN DEM Data Based on the Edge Length
How to keep the fidelity of the digital elevation model (DEM) data is a crucial problem in the current watermarking research, as the watermarked DEM data need to preserve their accuracy. We proposed a zero watermarking method for the triangulated irregular network (TIN) DEM data. It takes full advantage of the characteristics of the edge length in the TIN DEM data. First, the radio of the edge lengths is quantified to the watermark index, and the…
Transnational Networks and Institutional Embeddedness: Reengagement of the New Generation of Malaysian Chinese Entrepreneurs with China
Southeast Asian Chinese engage a rising China: Business Associations, Institutionalised Transnationalism, and the Networked State
With the launching of China’s ambitious Belt and Road Initiative (BRI) in 2013, Chinese diaspora in Southeast Asia have been confronted with both growing business opportunities and emerging challenges. How do ethnic Chinese businesses and their associations respond to the BRI, and by extension, a rising China? How do transnationalism and the nation-states shape their engagement strategies? What are the implications of the Southeast Asian experien…
Lossless Watermarking Algorithm for Geographic Point Cloud Data Based on Vertical Stability
With the increasing demand for high-precision and difficult-to-obtain geospatial point cloud data copyright protection in military, scientific research, and other fields, research on lossless watermarking is receiving more and more attention. However, most of the current geospatial point cloud data watermarking algorithms embed copyright information by modifying vertex coordinate values, which not only damages the data accuracy and quality but ma…
Between positionality and nudging: A rising China and Chinese voluntary associations in Southeast Asia
Drawing upon cases studies from Southeast Asia, especially Singapore and Malaysia, this article addresses the following questions pertaining to the rise of China and its impact upon Chinese voluntary associations (CVAs) in the region over the past two decades. By employing theoretical insights of positionality, nudging and de‐territorialisation and by focusing on various strategies pursued respectively by CVAs and the state, we conclude: (i) the …
Risk profiling of tobacco epidemic and estimated number of smokers living in China: A cross-sectional study based on PBICR
Our study investigated the prevalence of smokers and exposure to secondhand smoke in different spatial areas of China and explored various factors influencing the smoking prevalence. For the first time, our study applied Bayesian geostatistical modeling to generate a risk prediction map of smoking prevalence, which provides a more intuitive and clear understanding of the spatial disparities in smoking prevalence across different geographical regi…
A Blockchain Copyright Protection Model Based on Vector Map Unique Identification
Combining blockchain technology with digital watermarking presents an efficient solution for safeguarding vector map files. However, the large data volume and stringent confidentiality requirements of vector maps pose significant challenges for direct registration on blockchain platforms. To overcome these limitations, this paper proposes a blockchain-based copyright protection model utilizing unique identifiers (BCPM-UI). The model employs a dis…
Multi-Instance Zero-Watermarking Algorithm for Vector Geographic Data
To address the variability and complexity of attack types, this paper proposes a multi-instance zero-watermarking algorithm that goes beyond the conventional one-to-one watermarking approach. Inspired by the class-instance paradigm in object-oriented programming, this algorithm constructs multiple zero watermarks from a single vector geographic dataset to enhance resilience against diverse attacks. Normalization is applied to eliminate dimensiona…
Asymmetric Fingerprint Scheme for Vector Geographic Data Based on Smart Contracts
Existing vector geographic data transaction schemes are typically merchant-controlled, hindering fair ownership tracing and impartial arbitration. To address this, we propose an asymmetric digital fingerprinting scheme based on smart contracts. In our approach, the user encrypts a proof fingerprint with a public key and sends it to the merchant; the merchant leverages the additive homomorphic property of the Paillier cryptosystem to embed the enc…
Advanced Steganography and Watermarking Techniques (7 works) · Computer Science (7 works) · China (6 works) · Algorithm (5 works) · Artificial Intelligence (5 works) · Digital watermarking (5 works) · Political science (5 works) · Sociology (5 works) · Data mining (4 works) · Geography (4 works)