93 research outputs found

    The foxconn suicides and their media prominence: is the werther effect applicable in china?

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    <p>Abstract</p> <p>Background</p> <p>Media reporting of suicide and its relationship with actual suicide has rarely been investigated in Mainland China. The "Foxconn suicides" is a description referring to a string of suicides/attempts during 2010, all of which were related to a giant electrical manufacturing company, Foxconn. This study aimed to examine the clustering and copycat effects of the Foxconn suicides, and to investigate temporal patterns in how they were reported by the media in Mainland China, Hong Kong (HK), and Taiwan (TW).</p> <p>Methods</p> <p>Relevant articles were collected from representative newspapers published in three big cities in Mainland China (Beijing (BJ), Shenzhen (SZ), and Guangzhou (GZ)), HK, and TW, together with searching intensity data on the topic conducted using the Baidu search engine in Mainland China. The temporal clustering effects of the Foxconn suicides and their media prominence were assessed using the Kolmogorov-Smirnov test. The media reports of the Foxconn suicides' temporal patterns were explored using a nonparametric curve estimation method (that is, the local linear method). The potential mutual interactions between the Foxconn suicides and their media prominence were also examined, using logistic and Poisson regression methods.</p> <p>Results</p> <p>The results support a temporal clustering effect for the Foxconn suicides. The BJ-based newspapers' reporting and the occurrence of a Foxconn suicide/attempt are each found to be associated with an elevated chance of a further Foxconn suicide 3 days later. The occurrence of a Foxconn suicide also immediately influenced the intensity of both Baidu searching and newspaper reporting. Regional diversity in suicide reporting tempo-patterns within Mainland China, and similarities between HK and TW, are also demonstrated.</p> <p>Conclusions</p> <p>The Foxconn suicides were temporally clustered. Their occurrences were influenced by the reporting of BJ-based newspapers, and contagion within the company itself. Further suicide research and prevention work in China should consider its special media environment.</p

    Single-Crystalline Metal Oxide Nanostructures Synthesized by Plasma-Enhanced Thermal Oxidation.

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    To unravel the influence of the temperature and plasma species on the growth of single-crystalline metal oxide nanostructures, zinc, iron, and copper foils were used as substrates for the study of nanostructure synthesis in the glow discharge of the mixture of oxygen and argon gases by a custom-made plasma-enhanced horizontal tube furnace deposition system. The morphology and microstructure of the resulting metal oxide nanomaterials were controlled by changing the reaction temperature from 300 to 600 °C. Experimentally, we confirmed that single-crystalline zinc oxide, copper oxide, and iron oxide nanostructures with tunable morphologies (including nanowires, nanobelts, etc.) can be successfully synthesized via such procedure. A plausible growth mechanism for the synthesis of metal oxide nanostructures under the plasma-based process is proposed and supported by the nanostructure growth modelling. The results of this work are generic, confirmed on three different types of materials, and can be applied for the synthesis of a broader range of metal oxide nanostructures

    Temperature-dependent growth mechanisms of low-dimensional ZnO nanostructures

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    One-dimensional ZnO nanostructures were successfully synthesized on single-crystal silicon substrates via a simple thermal evaporation and vapour-phase transport method under different process temperatures from 500 to 1000 °C. The detailed and in-depth analysis of the experimental results shows that the growth of ZnO nanostructures at process temperatures of 500, 800, and 1000 °C is governed by different growth mechanisms. At a low process temperature of 500 °C, the ZnO nanostructures feature flat and smooth tips, and their growth is primarily governed by the vapour-solid mechanism. At an intermediate process temperature of 800 °C, the ZnO nanostructures feature cone-shape tips, and their growth is primarily governed by the self-catalyzed and saturated vapour–liquid–solid mechanism. At a high process temperature of 1000 °C, the alloy tip appears on the front side of the ZnO nanostructures, and their growth is primarily governed by the common catalyst-assisted vapour–liquid–solid mechanism. It is also shown that the morphological, structural, optical, and compositional properties of the synthesized ZnO nanostructures are closely related to the process temperature. These results are highly relevant to the development of light-emitting diodes, chemical sensors, energy conversion devices, and other advanced applications

    Are internet service providers responsible for online suicide pacts?

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    Property-performance control of multidimensional, hierarchical, single-crystalline ZnO nanoarchitectures

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    Diverse morphologies of multidimensional hierarchical single-crystalline ZnO nanoarchitectures including nanoflowers, nanobelts, and nanowires are obtained by use of a simple thermal evaporation and vapour-phase transport deposition technique by placing Au-coated silicon substrates in different positions inside a furnace at process temperatures as low as 550 °C. The nucleation and growth of ZnO nanostructures are governed by the vapour–solid mechanism, as opposed to the commonly reported vapour–liquid–solid mechanism, when gold is used in the process. The morphological, structural, compositional and optical properties of the synthesized ZnO nanostructures can be effectively tailored by means of the experimental parameters, and these properties are closely related to the local growth temperature and gas-phase supersaturation at the sample position. In particular, room-temperature photoluminescence measurements reveal an intense near-band-edge ultraviolet emission at about 386 nm for nanobelts and nanoflowers, which suggests that these nanostructures are of sufficient quality for applications in, for example, optoelectronic devices

    Editorial for Special Issue “Functional Graphene-Based Nanodevices”

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    As a typical ultra-thin two-dimensional nanomaterial, graphene has many excellent properties, including, but not limited to, mechanical, optical, thermal and electrical properties [...

    Measuring Online Social Support: Development and Validation of a Short Form for Chinese Adolescents

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    Supportive interactions on social media have great potential to benefit adolescents&rsquo; development. However, there is no instrument to measure online social support (OSS) in China. The study aimed to develop and validate a Chinese short version of the Online Social Support Scale (OSSS). The original scale was translated into Chinese through multiple forward and backward translation protocols. The calibration sample (N = 262) was used to select items and test the reliability, validity, and internal structure of the short form. The cross-validation sample (N = 267) was then used to assess measurement invariance by multigroup confirmatory factor analysis and examine criterion validity based on its relationships with life satisfaction, depression, and time on social media. The 20-item Chinese short version of OSSS (OSSS-CS) includes four factors: esteem/emotional support, social companionship, informational support, and instrumental support. Our results suggest that the OSSS-CS has high internal consistency, construct validity, and criterion validity. Furthermore, evidence of partial cross-validity demonstrated invariance of the variance&ndash;covariance matrices, factor structure, factor loadings, and factor variance across independent samples. The results also revealed that the original OSSS could be replicated across cultures. Finally, the short form developed in the study can be used as a reliable and valid measure of online social support among the Chinese adolescent population

    Suicide and the media in the Chinese contexts

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    The suicide and the media research field are generally concerned with the effect, content, and production of mass-disseminating suicide information. Most of the previous studies in the field were conducted in western countries. This dissertation is devoted to extending the research map to the Chinese contexts and moving the field forward into the new media era. It proposes a conceptual framework based on the social construction of reality theory and refines the framework through a combination of five studies. Study 1 might be the first investigation on mass-disseminating suicide information’s effect on suicide occurrences in Mainland China, using the Foxconn suicides as a case study. It finds that the Foxconn suicides were temporally clustered and influenced by inter-person contagion within the company, as well as the newspapers’ reporting about the topic in Beijing, the nation’s capital. Study2 examines the prominence and representation patterns of reporting the Foxconn suicides in Mainland China, Hong Kong, and Taiwan in 2010 calendar year. It demonstrates that the media coverage of the Foxconn suicides in the three societies generally experienced a three-phase evolving process in 2010. Meanwhile, within every phase, the media in different societies showed differences in their representations. Furthermore, the study investigates how the representation can be influenced by news sources and social contexts and explores possible explanations why the Beijing media’s reporting influenced the occurrences of the Foxconn suicides. Study3 compares representation of suicides in case-control psychological autopsy studies with representation of the same suicides in Hong Kong media. Considering the psychological autopsy as relatively more rigorous and validated, the comparison examines the suicide news representation’s accuracy and stereotyping tendencies. It finds a strong homogenisation of the Hong Kong newspapers in accurately reporting suicide methods but inaccurately reporting suicide risk factors, and that their reporting was problematic in stereotyping of gender-and method-specific suicides. Study 4 is a qualitative study of 33newspaper journalists’ experiences with producing suicide news from representative daily newspapers in Mainland China, Hong Kong, and Taiwan. Utilising the grounded theory method, it extracts how the journalists construct media reality of suicide within a social context. The study summarises criteria of suicide news values, identifies three types of key agents which are often engaged by the journalists in constructing suicide news, and also generates a comparative framework of suicide news production in the Chinese contexts. Study 5 examines what suicide-related information is easily accessible online in Mainland China and Hong Kong and compares it with its counterparts in English. It explores how the comparative framework proposed by Study 4 can also be applied to understand the nature of the online suicide information and serves as a bridge connecting the thesis with future studies on suicide and the new media. The five studies collectively contribute to understanding the nature and mechanism of constructing media reality of suicide in the Chinese contexts. By applying the research findings, suicide prevention professionals would be able to develop context-sensitive strategies to cooperate with the media and prevent suicide.published_or_final_versionSocial Work and Social AdministrationDoctoralDoctor of Philosoph

    Controlled-bandgap silicon nitride nanomaterials : deterministic nitrogenation in high-density plasmas

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    To overcome major problems associated with insufficient incorporation of nitrogen in hydrogenated amorphous silicon nitride (a-SiNx:H) nanomaterials, which in turn impedes the development of controlled-bandgap nanodevices, here we demonstrate the possibility to achieve effective bandgap control in a broad range by using high-density inductively coupled plasmas. This achievement is related to the outstanding dissociation ability of such plasmas. It is shown that the compositional, structural, optical, and morphological properties of the synthesized a-SiNx:H nanomaterials can be effectively tailored through the manipulation of the flow rate ratio of the silane to nitrogen gases X. In particular, a wide bandgap of 5.21 eV can be uniquely achieved at a low flow rate ratio of the nitrogen to silane gas of 1.0, whereas typically used values often exceed 20.0. These results are highly-relevant to the development of the next-generation nanodevices that rely on the effective control of the functional nano-layer bandgap energies
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