2,231 research outputs found

    Real-Name Registration Rules and the Fading Digital Anonymity in China

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    China has implemented comprehensive online real-name registration rules, which require Internet users to disclose their identities. Chinese national law has required most online service providers to implement real-name registration since 2012. This article uses the real-name registration rules to illustrate the supremacy and limitations of the Network Authoritarian Model (NAM), an approach leveraging corporate resources for political surveillance and occasionally adopted by the Chinese party-state. By addressing the evolution of real-name registration rules in China, this article illustrates the party-state’s gradual efforts in both eliminating cyberspace anonymity and etching Chinese characteristics on the architecture of the Internet. Although the Chinese government has faced serious challenges in enforcing the real-name registration policy and current enforcement is far from satisfactory, China is not alone in promoting such a policy. Major Internet companies, including Google, Facebook, and LinkedIn, have expressed similar interests in requiring users to register their real names. Moreover, policymakers in developed and developing countries are exploring similarly themed regulations and China, therefore, may well be in the vanguard of the global movement for online real-name registration. Nonetheless, requiring real-name registration in China has not only created huge costs for Internet companies, but also given rise to fierce controversy associated with free speech, privacy, and law enforcement. In this article, we identify several important legal and policy implications of the Chinese real-name registration policy. We also illustrate the foremost predicament currently faced by the Chinese party-state in enforcing the policy. This analysis argues that China may create a “spillover effect” in jurisdictions outside China as well as in the global Internet architecture

    An Image Retrieval System Based on the Color Complexity of Images

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    The fuzzy color histogram (FCH) spreads each pixel's total membership value to all histogram bins based on their color similarity. The FCH is insensitive to quantization errors. However, the FCH can state only the global properties of an image rather than the local properties. For example, it cannot depict the color complexity of an image. To characterize the color complexity of an image, this paper presents two image features -- the color variances among adjacent segments (CVAAS) and the color variances of the pixels within an identical segment (CVPWIS). Both features can explain not only the color complexity but also the principal pixel colors of an image. Experimental results show that the CVAAS and CVPWIS based image retrieval systems can provide a high accuracy rate for finding out the database images that satisfy the users' requirement. Moreover, both systems can also resist the scale variances of images as well as the shift and rotation variances of segments in images

    Privacy Perils of Open Data and Data Sharing: A Case Study of Taiwan\u27s Open Data Policy and Practices

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    Governments and private sector players have hopped on the open data train in the past few years. Both the governments and civil society in Taiwan are exploring the opportunities provided by the data stored in public and private sectors. While they have been enjoying the benefits of the sharing and flowing of data among various databases, the government and some players in the private sectors have also posed tremendous privacy challenges by inappropriately gathering and processing personal data. The amended Personal Data Protection Act was originally enacted as a regulatory mechanism to protect personal data and create economic benefits via enhancing the uses of public and private sector data. In reality, the Act has instead resulted in harm to Taiwan’s data privacy situation in this big data era. This article begins with an overview of the Taiwan’s open data policy history and its current practices. Next, the article analyzes cases in which the data sharing practices between different sectors have given rise to privacy controversies, with a particular focus on 2020, when Taiwan used data surveillance in response to the COVID-19 pandemic. Finally, this article flags problems related to an open data system, including the protection of sensitive data, de-identification, the right to consent and opt-out, and the ambiguity of “public interest,” and concludes by proposing a feasible architecture for the implementation of a more sensible open data system with privacy-enhancing characteristics

    Lexical Information and Beyond : Constructional Inferences in Semantic Representation

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    Manganese-Catalyzed Cross-Coupling of Thiols with Aryl Iodides

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    Here we report the manganesecatalyzedcoupling reaction of thiols witharyl iodides, giving the aryl thioethers ingood to excellent yields; the system showsgood functional group tolerance and enablesthe sterically demanding aryl iodides tocouple with thiols

    Antimicrobial Susceptibility and Multiplex PCR Screening of AmpC Genes From Isolates of Enterobacter cloacae, Citrobacter freundii, and Serratia marcescens

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    Background/PurposeThe emergence of multiple drug resistance in Enterobacteriaceae is of particular concern. The aim of this study was to evaluate the antimicrobial susceptibility and screen for the ampC gene in three members of the Enterobacteriaceae family (Enterobacter cloacae, Citrobacter freundii, and Serratia marcescens) found at Taichung Veterans General Hospital during the past 5 years using multiplex polymerase chain reaction (PCR).MethodsThe susceptibility of thirty isolates from each of the three Enterobacteriaceae family members to five antimicrobial agents (ceftazidime, flomoxef, imipenem, moxifloxacin, and colistin) was assessed. The susceptibility was analyzed by disk diffusion, screening and confirmatory tests for extended-spectrum β-lactamases (ESBL) and minimum inhibitory concentration tests according to the recommendations of the Clinical and Laboratory Standards Institute. The detection of ampC genes (3 families, including DHA, EBC and CIT) was performed by multiplex PCR. To detect the coexistence of ESBL genes, PCR was performed using five primer pairs: TEM, SHV, SHV-5, CTX-M-3, and CTX-M-14.ResultsOf the 90 isolates, 53 (58.9%) were positive in the screening test for ESBL. Resistance genes were detected in 12 (22.6%) of these isolates: ampC gene of DHA type in one E. cloacae isolate and EBC type in three E. cloacae isolates; ampC gene of CIT type in four C. freundii isolates; CTX-M-3-like in one C. freundii isolate and one S. marcescens isolate; TEM in three E. cloacae isolates, three C. freundii isolates and two S. marcescens isolates; SHV in one C. freundii isolate.ConclusionAntibiotic phenotypes cannot accurately distinguish the resistance mechanisms caused by ampC or ESBL, and especially in ESBL-ampC combinations. However, PCR is a useful technique for the identification of the different types of resistance genes

    Neuroprotective Effect of Uncaria rhynchophylla in Kainic Acid-Induced Epileptic Seizures by Modulating Hippocampal Mossy Fiber Sprouting, Neuron Survival, Astrocyte Proliferation, and S100B Expression

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    Uncaria rhynchophylla (UR), which is a traditional Chinese medicine, has anticonvulsive effect in our previous studies, and the cellular mechanisms behind this are still little known. Because of this, we wanted to determine the importance of the role of UR on kainic acid- (KA-) induced epilepsy. Oral UR for 6 weeks can successfully attenuate the onset of epileptic seizure in animal tests. Hippocampal mossy fiber sprouting dramatically decreased, while neuronal survival increased with UR treatment in hippocampal CA1 and CA3 areas. Furthermore, oral UR for 6 weeks significantly attenuated the overexpression of astrocyte proliferation and S100B proteins but not γ-aminobutyric acid A (GABAA) receptors. These results indicate that oral UR for 6 weeks can successfully attenuate mossy fiber sprouting, astrocyte proliferation, and S100B protein overexpression and increase neuronal survival in KA-induced epileptic rat hippocampu
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