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Photo Socialization in Digital Natives
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作者 Jacob Bafiuelos 《Journalism and Mass Communication》 2011年第3期226-234,共9页
In the following work of research, we shall present the results of a study on forms of digital photographic socialization as carried out by the so-called "digital natives" in order to explore their competence in man... In the following work of research, we shall present the results of a study on forms of digital photographic socialization as carried out by the so-called "digital natives" in order to explore their competence in managing digital photographic output and cultural practices. This shall be done under the following categories of analysis: snapshot, organization, socialization, reception, privacy, and copyrights in digital photography. The study explores the forms of digital photography production, technical problems of photographic management and the final uses that digital photographers give to their photos in terms of web tools 2.0, mobile telephones and social networks. Digital photography technology, compact cameras, mobile phones with cameras, specialized websites in photography and the lnternet generate new forms of production and emerging styles of digital photographic socialization. The study is carried out using a defined sample of university students, those digital natives who create and use digital photography. 展开更多
关键词 Digital photography SOCIALIZATION digital photographic competency cultural practices digital natives
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Resilience and response:Unveiling the impacts of extreme droughts on forests through integrated dendrochronological and remote sensing analyses 被引量:1
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作者 Han Shi Xi Peng +6 位作者 Yong-Jiao Zhou Ai-Ying Wang Xue-Kai Sun Na Li Quan-Sheng Bao Gude Buri Guang-You Hao 《Forest Ecosystems》 SCIE CSCD 2024年第4期491-501,共11页
Extreme droughts are anticipated to have detrimental impacts on forest ecosystems,especially in water-limited regions,due to the influence of climate change.However,considerable uncertainty remains regarding the patte... Extreme droughts are anticipated to have detrimental impacts on forest ecosystems,especially in water-limited regions,due to the influence of climate change.However,considerable uncertainty remains regarding the patterns in species-specific responses to extreme droughts.Here,we conducted a study integrating dendrochronology and remote sensing methods to investigate the mosaic-distributed maple-oak(native)natural forests and poplar plantations(introduced)in the Horqin Sandy Land,Northeast China.We assessed the impacts of extreme droughts on tree performances by measuring interannual variations in radial growth and vegetation index.The results showed that precipitation and self-calibrated palmer drought severity index(scPDSI)are the major factors influencing tree-ring width index(RWI)and normalized difference vegetation index(NDVI).The severe droughts between 2000 and 2004 resulted in reduced RWI in the three studied tree species as well as led to NDVI reductions in both the maple-oak natural forests and the poplar plantations.The RWI reached the nadir during the2000-2004 severe droughts and remained at low levels two years after the severe drought,creating a legacy effect.In contrast to the lack of significant correlation between RWI and scPDSI,NDVI exhibited a significant positive correlation with scPDSI indicating the greater sensitivity of canopy performance to droughts than radial growth.Furthermore,interspecific differences in RWI and NDVI responses were observed,with the fast-growing poplar species experiencing a more significant RWI decrease and more negative NDVI anomaly during severe droughts than native species,highlighting the species-specific trade-offs between drought resilience and growth rate.This study emphasizes the importance of combining tree-level radial growth with landscape-scale canopy remote sensing to understand forest resilience and response.Our study improves our understanding of forest responses to extreme drought and highlights species differences in climate responses,offering crucial insights for optimizing species selection in sustainable afforestation and forest management in water-limited regions under the influence of climate change. 展开更多
关键词 Introduced tree species Native tree species NDVI Severe drought Tree-ring width
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Endophytic Occupation in Nodules of Rhynchosia Plants from Semiarid Regions of Argentina
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作者 Cinthia T.Lucero María de los Á.Ruíz +3 位作者 Fabiola Pagliero Carolina Castaño Mariela L.Ambrosino Graciela S.Lorda 《Phyton-International Journal of Experimental Botany》 SCIE 2024年第6期1081-1099,共19页
Beneficial microbes can improve soil health by promoting soil structure,nutrient cycling,and disease suppression.In addition,a wide array of rhizospheric microbes are responsible for producing metabolically active comp... Beneficial microbes can improve soil health by promoting soil structure,nutrient cycling,and disease suppression.In addition,a wide array of rhizospheric microbes are responsible for producing metabolically active compounds including various types of plant growth regulators.So,microbial biodiversity studies could contribute to the improvement of agricultural practices in deprived areas,such as the Pampean semiarid region.The vast majority of studies conducted on endophytic microorganisms have focused on intensive crop legume species.In contrast,little attention has been paid to microorganisms of native legumes,whose ecology is not directly affected by human action.In this study,endophytic microorganisms isolated from root nodules of a selected native legume of the genus Rhynchosia were characterized.Viable isolates were studied with a focus on their plant growth-pro-moting rhizobacteria(PGPR)properties.Considering the edaphic characteristics of the Pampean semiarid region,the isolates obtained were evaluated for their ability to grow under three salt stress conditions(50,100,and 200 mM NaCl)and four different pH values(6,7,8,and 9).Based on their PGPR activities,the selected strains were phylogenetically grouped using BOX-PCR.The results showed great variability among the isolates in terms of the characteristics studied.Native legumes manifested a wide endophytic variability and remarkable perfor-mance in PGPR activities.We conclude that they could be used as potential bioinoculants for legume cultivation,an excellent alternative to the use of chemical fertilizers that currently pollute the environment. 展开更多
关键词 Native strains ENDOPHYTES PGPR native legumes stress
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Prospects and limitations of soil amendment and irrigation techniques for the water-saving public urban greenery and ephemeral weed management in the sandy soils of the United Arab Emirates
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作者 Ayesha ALAM Elke GABRIEL-NEUMANN 《Journal of Arid Land》 SCIE CSCD 2024年第9期1288-1302,共15页
Public urban greenery greatly contributes to the residential and tourist value of cities in the Gulf Region,but due to the hyper-arid climatic conditions,the cost of irrigation and plant maintenance is very high.Exist... Public urban greenery greatly contributes to the residential and tourist value of cities in the Gulf Region,but due to the hyper-arid climatic conditions,the cost of irrigation and plant maintenance is very high.Existing strategies to reduce the monetary and ecological costs involve the cultivation of native xerophytic plantations,and/or the use of soil improvers to increase water-and nutrient-holding capacity of the sandy soils.Various soil improvers based on mineral,organic,or synthetic materials have entered the United Arab Emirates(UAE)market in recent years,but there is considerable uncertainty about how they should best be used in combination with ornamental plant stands involving xerophytic native plants.The present study investigated the effect of soil amendment and deep pipe irrigation on perennial ornamental plant stands involving native plants(Tephrosia appolinea(Gel.)Link in combination with Aerva javanica(Burm.f.)Juss.ex Schult.)and native-exotic plants(T.appolinea in combination with Ruelia simplex C.Wright)either or not topsoil and subsoil amendment with bentonite and hydrophobic sand under the irrigation water supply of less than 50%of reference evapotranspiration(ET0).After one year of cultivation,T.appolinea and A.javanica(native vs.native)produced high biomass and exhibited high water use efficiency(WUE)as compared with T.appolinea and R.simplex(native vs.exotic)combination given that no significant differences were found under the soil amendment treatments.All stands thrived under irrigation water supply far below what is usually supplied to exotic ornamental stands in public parks of the Al Ain City,the UAE.However,subsoil amendment in combination with deep pipe irrigation reduced the occurrence of weeds and increased the overall plant rooting depth.Our results suggest that subsoil amendment and irrigation up to 60-80 cm depth can potentially control ephemeral weed infestation,which is a great challenge in various plant production systems of the Gulf Region.The results of the present study suggest that the impact of soil amendment on the WUE of exotic plants is marginal and might not be economically justified.Replacing exotic with native ornamental plant species seems to have a far greater water-saving potential than the amendment of the soil,while weeds can be suppressed in the absence of topsoil moisture. 展开更多
关键词 native and exotic plant communities competitive strength soil improvers urban plantation subsoil amendment weed management
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Geochemistry, mineral paragenesis and geothermal conditions of oreforming fluids from the Ain El Bey Cu–Fe deposit: potential occurrence of native gold and precious metal traces (North African orogenic belt, Northern Tunisia)
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作者 Rania Ben Aissa Wiem Ben Aissa +2 位作者 Said Tlig Lassaad Ben Aissa Abdessalem Ben Haj Amara 《Acta Geochimica》 EI CAS CSCD 2024年第2期366-384,共19页
The Ain El Bey abandoned mine, in North-West Tunisia, fits into the geodynamic context of the European and African plate boundary. Ore deposit corresponds to veins and breccia of multiphase Cu–Fe-rich mineralization ... The Ain El Bey abandoned mine, in North-West Tunisia, fits into the geodynamic context of the European and African plate boundary. Ore deposit corresponds to veins and breccia of multiphase Cu–Fe-rich mineralization related to various hydrothermal fluid circulations. Petromineralogical studies indicate a rich mineral paragenesis with a minimum of seven mineralization phases and, at least, six pyrite generations. As is also the case for galena and native silver, native gold is observed for the first time as inclusion in quartz which opens up, thus, new perspectives for prospecting and evaluating the potential for noble metals associated with the mineralization. Scanning Electron Microscope--Energy Dispersive Spectroscopy and Transmission electron microscopy analyses show, in addition, a large incorporation of trace elements, including Ag and Au, in mineral structures such as fahlores(tetrahedrite-tennantite) and chalcopyrite ones. The mineral/mineral associations, used as geothermometers, gave estimated temperatures for the mineralizing fluids varying from 254 to 330 ℃ for phase Ⅲ, from 254 to 350 ℃ for phase Ⅳ, and from 200 to 300 ℃ for phases Ⅴ and Ⅵ. The seventh and last identified mineralization phase, marked by a deposit of native gold, reflects a drop in the mineralizing fluid’s temperature(< 200 ℃) compatible with boiling conditions. Such results open up perspectives for the development of precious metal research and the revaluation of the Cu–Fe ore deposit at the Ain El Bey abandoned mine, as well as at the surrounding areas fitting in the geodynamic framework of the Africa-Europe plate boundary. 展开更多
关键词 Ore-formingfluids Mineral geochemistry Mineral geothermometers Native silver-gold Ain El Bey Ore deposit North Tunisia
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Native and prosthetic septic arthritis in a university hospital in Saudi Arabia:A retrospective study
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作者 Reham Kaki 《World Journal of Orthopedics》 2024年第8期722-733,共12页
BACKGROUND Septic arthritis,whether native or prosthetic,poses a significant challenge in clinical practice due to its potentially devastating consequences.Despite its clinical importance,there remains a dearth of com... BACKGROUND Septic arthritis,whether native or prosthetic,poses a significant challenge in clinical practice due to its potentially devastating consequences.Despite its clinical importance,there remains a dearth of comprehensive studies and standardized diagnostic criteria,particularly in the Kingdom of Saudi Arabia.AIM To investigate the epidemiology,microbiological profiles,and clinical characteristics of native and prosthetic septic joints in the Saudi Arabian population.METHODS Medical records of patients diagnosed with septic arthritis between January 1,2015,and December 31,2022,were retrospectively reviewed.Data regarding patient demographics,clinical presentation,microbiological cultures,treatment modalities,and outcomes were analyzed.RESULTS In a retrospective review of 52 cases of septic arthritis,a balanced gender distribution was observed(1:1 ratio),with the knee being the most commonly affected joint(80.8%).Methicillin-resistant Staphylococcus aureus predominated in native joints(24.2%),while Brucella spp.was more prevalent in prosthetic joints(21.1%).Joint preservation was achieved in most cases(84.6%),with no significant difference in clinical features between native and prosthetic joints.However,certain comorbidities were more common in native joint cases,including renal impairment(P=0.002),hemodialysis(P=0.004),heart disease(P=0.013),and chronic liver disease(P=0.048).At the same time,osteoarthritis was more prevalent in prosthetic joint cases(P=0.013).Vancomycin was the most frequently used antibiotic(26.9%),and most patients received antibiotics before joint aspiration(57.7%).Surgical intervention,predominantly arthrotomy,was required in most cases(32.7%).Notably,a significant association was found between joint type and mortality(odds ratio=0.587,P=0.048),as well as the Charlson comorbidity index and mortality(P=0.001).CONCLUSION This study highlighted distinctive microbiological profiles and etiological factors in septic arthritis cases in the Saudi Arabian population. 展开更多
关键词 Septic arthritis Native joint Prosthetic joint EPIDEMIOLOGY Diagnostic criteria Saudi Arabia
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Application of Artificial Insemination in Selective Breeding of Native Beef Cattle in Wenzhou
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作者 Ye Chaoqun Liu Junyu +7 位作者 Lv Caihao Liu Xuyan Fu Hao Chen Tianmeng Xu Zijing Xu Da Wu Changhuie Xu Hongxi 《Animal Husbandry and Feed Science》 CAS 2024年第1期9-12,共4页
[Objective]The paper was to improve the quality and growth rate of native yellow cattle in Wenzhou.[Method]Three groups of cattle were subjected to artificial insemination using frozen semen from Wagyu bull.The groups... [Objective]The paper was to improve the quality and growth rate of native yellow cattle in Wenzhou.[Method]Three groups of cattle were subjected to artificial insemination using frozen semen from Wagyu bull.The groups consisted of 20 native yellow cattle,20 Angus catle,and 20 Luxi yellow cattle.The heifers were subsequently evaluated for body size and body weight,and underwent treatment with estrus synchronization,artificial insemination,and early pregnancy diagnosis.[Result]The mean body size and body weight of native yellow cattle were found to be significantly lower than those of Angus cattle and Luxi yellow cattle(P<0.05).The estrus synchronization rate and mating rate of native yellow cattle were both 100%,while the corresponding rates for Angus cattle and Luxi yellow cattle were 90%and 95%,respectively.The ultrasound examination conducted on the 32m day following the mating revealed a distinct image of gestation sac,which,when considered alongside the findings of the rectal examination,may be indicative of pregnancy.The conception rates were 75%,72%,and 74%for native yllow cattle,Angus cattle,and Luxi yellow cattle,respectively.[Conclusion]The reproductive performance of native beef cattle is relatively superior. 展开更多
关键词 Native cattle in Wenzhou Angus cattle Luxi yellow cattle Artificial insemination Estrus synchronization Fertilization rate
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Successful treatment of acute liver failure due to Wilson’s disease: Serendipity or fortuity?
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作者 Valeria Delle Cave Fabiola Di Dato +2 位作者 Pier Luigi Calvo Maria Immacolata Spagnuolo Raffaele Iorio 《World Journal of Hepatology》 2024年第8期1111-1119,共9页
BACKGROUND Acute liver failure(ALF)may be the first and most dramatic presentation of Wilson’s disease(WD).ALF due to WD(WD-ALF)is difficult to distinguish from other causes of liver disease and is a clear indication... BACKGROUND Acute liver failure(ALF)may be the first and most dramatic presentation of Wilson’s disease(WD).ALF due to WD(WD-ALF)is difficult to distinguish from other causes of liver disease and is a clear indication for liver transplantation.There is no firm recommendation on specific and supportive medical treatment for this condition.AIM To critically evaluate the diagnostic and therapeutic management of WD-ALF patients in order to improve their survival with native liver.METHODS A retrospective analysis of patients with WD-ALF was conducted in two pediatric liver units from 2018 to 2023.RESULTS During the study period,16 children(9 males)received a diagnosis of WD and 2 of them presented with ALF.The first was successfully treated with an unconventional combination of low doses of D-penicillamine and zinc plus steroids,and survived without liver transplant.The second,exclusively treated with supportive therapy,needed a hepatotransplant to overcome ALF.CONCLUSION Successful treatment of 1 WD-ALF patient with low-dose D-penicillamine and zinc plus steroids may provide new perspectives for management of this condition,which is currently only treated with liver transplantation. 展开更多
关键词 Fulminant liver failure Copper CHELATOR Zinc STEROIDS Liver transplantation Autoimmune hepatitis Prognostic score 24 hour-urinary copper excretion Native liver
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Intelligence Driven Wireless Networks in B5G and 6G Era:A Survey
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作者 GAO Yin CHEN Jiajun LI Dapeng 《ZTE Communications》 2024年第3期99-105,共7页
As the wireless communication network undergoes continuous expansion,the challenges associated with network management and optimization are becoming increasingly complex.To address these challenges,the emerging artifi... As the wireless communication network undergoes continuous expansion,the challenges associated with network management and optimization are becoming increasingly complex.To address these challenges,the emerging artificial intelligence(AI)and machine learning(ML)technologies have been introduced as a powerful solution.They empower wireless networks to operate autonomously,predictively,ondemand,and with smart functionality,offering a promising resolution to intricate optimization problems.This paper aims to delve into the prevalent applications of AI/ML technologies in the optimization of wireless networks.The paper not only provides insights into the current landscape but also outlines our vision for the future and considerations regarding the development of an intelligent 6G network. 展开更多
关键词 intelligent network native AI load prediction trajectory prediction
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Extracorporeal organ support for critically ill patients:Overcoming the past,achieving the maximum at present,and redefining the future
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作者 Panagiotis Papamichalis Katerina G Oikonomou +4 位作者 Maria Xanthoudaki Asimina Valsamaki Apostolia-Lemonia Skoura Sophia K Papathanasiou Achilleas Chovas 《World Journal of Critical Care Medicine》 2024年第2期19-28,共10页
Extracorporeal organ support(ECOS)has made remarkable progress over the last few years.Renal replacement therapy,introduced a few decades ago,was the first available application of ECOS.The subsequent evolution of ECO... Extracorporeal organ support(ECOS)has made remarkable progress over the last few years.Renal replacement therapy,introduced a few decades ago,was the first available application of ECOS.The subsequent evolution of ECOS enabled the enhanced support to many other organs,including the heart[veno-arterial extracorporeal membrane oxygenation(ECMO),slow continuous ultrafiltration],the lungs(veno-venous ECMO,extracorporeal carbon dioxide removal),and the liver(blood purification techniques for the detoxification of liver toxins).Moreover,additional indications of these methods,including the suppression of excessive inflammatory response occurring in severe disorders such as sepsis,coronavirus disease 2019,pancreatitis,and trauma(blood purification techniques for the removal of exotoxins,endotoxins,or cytokines),have arisen.Multiple organ support therapy is crucial since a vast majority of critically ill patients present not with a single but with multiple organ failure(MOF),whereas,traditional therapeutic approaches(mechanical ventilation for acute respiratory failure,antibiotics for sepsis,and inotropes for cardiac dysfunction)have reached the maximum efficacy and cannot be improved further.However,several issues remain to be clarified,such as the complexity and cost of ECOS systems,standardization of indications,therapeutic protocols and initiation time,choice of the patients who will benefit most from these interventions,while evidence from randomized controlled trials supporting their use is still limited.Nevertheless,these methods are currently a part of routine clinical practice in intensive care units.This editorial presents the past,present,and future considerations,as well as perspectives regarding these therapies.Our better understanding of these methods,the pathophysiology of MOF,the crosstalk between native organs resulting in MOF,and the crosstalk between native organs and artificial organ support systems when applied sequentially or simultaneously,will lead to the multiplication of their effects and the minimization of complications arising from their use. 展开更多
关键词 Kidney-liver replacement therapy Heart-lung support Blood purification Native–artificial organ crosstalk Multiple organ support therapy Extracorporeal organ support
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The Role and Value of Sociolinguistics in English Language Teaching
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作者 Fenhua Guo 《Journal of Contemporary Educational Research》 2024年第8期193-201,共9页
This paper aims to explore how the study of sociolinguistics can benefit teachers,particularly in the context of teaching English as a Foreign Language(EFL)in China.The article will first examine how sociolinguistic k... This paper aims to explore how the study of sociolinguistics can benefit teachers,particularly in the context of teaching English as a Foreign Language(EFL)in China.The article will first examine how sociolinguistic knowledge can reshape teachers’perceptions of“English,”focusing on aspects such as English varieties,World Englishes,and Chinese English.Following that,the article discusses the necessity of rethinking current practices in English language teaching,including the nativeness paradigm and the concept of communicative competence based on a reconceptualized view of“English.”Additionally,the discussion will focus on how teachers,informed by sociolinguistic awareness of non-native teachers’identities and teacher agency,can address and resolve existing challenges in EFL teaching.Finally,the article will conclude by summarizing the key issues discussed and highlighting the significance of studying sociolinguistics for language practitioners in China. 展开更多
关键词 World Englishes Chinese English English language teaching Nativeness Non-native English-speaking teachers
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React Native的跨平台移动应用开发实践
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作者 王硕 祁欣颖 《信息与电脑》 2024年第7期119-121,共3页
随着智能手机的普及,移动应用成了连接用户与服务的重要渠道。然而,面对iOS和Android等多个平台,开发者不得不重复开发同一应用以适配不同系统,这不仅消耗了大量的资源,也延长了产品的上市时间。React Native作为一种跨平台移动应用开... 随着智能手机的普及,移动应用成了连接用户与服务的重要渠道。然而,面对iOS和Android等多个平台,开发者不得不重复开发同一应用以适配不同系统,这不仅消耗了大量的资源,也延长了产品的上市时间。React Native作为一种跨平台移动应用开发框架,允许开发者使用Java Script编写应用,一次编码便可在多个平台上运行。本文通过实践案例分析了使用React Native进行跨平台移动应用开发的效率和成本效益,探讨了其在解决平台异质性问题上的有效性,并对比了React Native与其他跨平台框架的优势。结果表明,基于React Native的跨平台开发不仅能够显著提高开发效率,降低开发成本,而且还能提供与原生应用接近的用户体验,为移动应用开发提供了一种高效的解决方案。 展开更多
关键词 React Native 跨平台开发 移动应用 开发效率 成本效益
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基于React Native的用户交互设计
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作者 秦鹏 《电脑编程技巧与维护》 2024年第9期11-13,16,共4页
研究旨在探讨如何在基于React Native的跨平台应用开发中进行有效的人机交互设计。随着移动应用市场的持续扩大,跨平台开发框架(例如,React Native)提供了一种高效的方式来构建应用,但其成功与否往往取决于用户体验的质量。研究重点讨... 研究旨在探讨如何在基于React Native的跨平台应用开发中进行有效的人机交互设计。随着移动应用市场的持续扩大,跨平台开发框架(例如,React Native)提供了一种高效的方式来构建应用,但其成功与否往往取决于用户体验的质量。研究重点讨论了利用React Native的特性和工具来设计具有优秀人机交互的跨平台应用,通过实际案例和技术细节进行了深入探讨。 展开更多
关键词 React Native框架 跨平台应用开发 人机交互设计 实践方法
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Effects of Calcium and Magnesium on Phosphorus Availability in Ferralsols and Rice Production in Forest Zones of Côte d’Ivoire
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作者 Guy Fernand Yao Brahima Kone +5 位作者 Kouadio Amani Franck Michaël Lemonou Bahan Jean Lopez Essehi Brou Kouame François Lompo Albert Yao-Kouame 《Journal of Agricultural Chemistry and Environment》 2024年第1期33-53,共21页
Phosphorus bioavailability has long been a recurring problem in tropical acid soils. A pot experiment was carried out during three (3) successive rice production cycles at Adiopodoumé to evaluate the response of ... Phosphorus bioavailability has long been a recurring problem in tropical acid soils. A pot experiment was carried out during three (3) successive rice production cycles at Adiopodoumé to evaluate the response of the NERICA 5 rice accession to various doses of calcium, magnesium and phosphorous. The experiment was conducted using a randomized split-plot design. The interactive effects of calcium carbonate (0, 25, 50 and 75 kg·Ca·ha<sup>-1</sup>) and magnesium sulfate (0, 25, 50 and 75 kg·Mg·ha<sup>-1</sup>) and Togo natural phosphate (0, 25, 50 and 75 kg·P·ha<sup>-1</sup>) were determined at each production cycle. The results showed that single-dose natural phosphate supplementation for three cropping cycles resulted in an average enrichment of around 2 mg·P·kg<sup>-1</sup> after each trial following its continuous dissolution, with an increase in DSP (33.31% to 70.52%). The study revealed one strategy for managing and enhancing native P with cations and another for exogenous P: there would be a synergy of Ca/Mg on native P, whereas an antagonism would characterize the two parameters in phosphate fertilization. 展开更多
关键词 Soil Acidity Native and Exogenous Phosphorus Free Iron Ca/Mg Balances Rice Growing Côte d’Ivoire
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Finding Dutch natives in online forums
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作者 Bernard van den Boom Cor J.Veenman 《Forensic Sciences Research》 2018年第3期230-239,共10页
Law enforcement agencies have a restricted area in which their powers apply,which is called their jurisdiction.These restrictions also apply to the Internet.However,on the Internet,the physical borders of the jurisdic... Law enforcement agencies have a restricted area in which their powers apply,which is called their jurisdiction.These restrictions also apply to the Internet.However,on the Internet,the physical borders of the jurisdiction,typically country borders,are hard to discover.In our case,it is hard to establish whether someone involved in criminal online behavior is indeed a Dutch citizen.We propose a way to overcome the arduous task of manually investigating whether a user on an Internet forum is Dutch or not.More precisely,we aim to detect that a given English text is written by a Dutch native author.To develop a detector,we follow a machine learning approach.Therefore,we need to prepare a specific training corpus.To obtain a corpus that is representative for online forums,we collected a large amount of English forum posts from Dutch and non-Dutch authors on Reddit.To learn a detection model,we used a bag-of-words representation to capture potential misspellings,grammatical errors or unusual turns of phrases that are characteristic of the mother tongue of the authors.For this learning task,we compare the linear support vector machine and regularized logistic regression using the appropriate performance metrics f1 score,precision,and average precision.Our results show logistic regression with frequency-based feature selection performs best at predicting Dutch natives.Further study should be directed to the general applicability of the results that is to find out if the developed models are applicable to other forums with comparable high performance. 展开更多
关键词 Forensic data science text mining author profiling corpus creation big data open source intelligence native language verification
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心脏磁共振节段性Native T1和组织追踪技术在肥厚型心肌病和高血压性心脏病中的鉴别价值
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作者 王君禾 费京乐 +3 位作者 苏燕萍 陈炜越 纪建松 卢陈英 《温州医科大学学报》 CAS 2023年第8期628-636,共9页
目的:探讨心脏磁共振节段性Native T1和组织追踪技术在肥厚型心肌病(HCM)和高血压性心脏病(HHD)中的鉴别诊断效能。方法:回顾性纳入2018年10月至2022年7月温州医科大学附属第五医院收治确诊的HCM患者80例,HHD患者25例。所有受检者的电影... 目的:探讨心脏磁共振节段性Native T1和组织追踪技术在肥厚型心肌病(HCM)和高血压性心脏病(HHD)中的鉴别诊断效能。方法:回顾性纳入2018年10月至2022年7月温州医科大学附属第五医院收治确诊的HCM患者80例,HHD患者25例。所有受检者的电影和T1 mapping图像经CVI42软件后处理,获得常规左心室功能参数、左心室心肌应变参数、整体及各节段Native T1值。对HCM、HHD患者的各心脏磁共振参数进行组间比较,采用单因素和多因素Logistic回归分析筛选预测因子并进行建模分析,采用受试者工作特征(ROC)曲线及曲线下面积(AUC)评估参数鉴别效能。结果:与HCM患者相比,HHD患者男性更多(P=0.048),吸烟者更多(P=0.032);在心脏磁共振常规左心室参数中,与HHD患者相比,HCM患者的左心室射血分数(LVEF)、左心室舒张末期最大室壁厚度(LVMWT)增大更明显,钆对比剂延迟强化(LGE)阳性率更高(P<0.001),而舒张末期容积指数(LVEDVI)和收缩末期容积指数(LVESVI)较低(P<0.01);HCM患者的左心室整体Native T1、节段1、7、8、9、12、16 Native T1、3D径向应变(GRS)和3D周向应变(GCS)均高于HHD患者(P<0.05)。单因素及多因素Logistic回归分析显示3D GCS(OR=0.68,95%CI=0.48~0.95,P=0.025)和节段8 Native T1(OR=1.04,95%CI=1.00~1.07,P=0.029)是HCM鉴别HHD的预测因子,ROC曲线结果显示3D GCS、节段8 Native T1及二者联合模型的AUC值分别为0.751、0.779、0.925,灵敏度分别为86.67%、71.62%、84.06%,特异度分别为63.16%、82.61%、88.89%,其中联合参数模型的鉴别效能最高(P<0.05)。结论:节段性Native T1和组织追踪技术在HCM和HHD的鉴别诊断中有重要价值,其中节段8 Native T1和3D GCS是HCM鉴别HHD的预测因子,且二者联合模型的鉴别诊断价值最高。 展开更多
关键词 心脏磁共振 Native T1 组织追踪技术 肥厚型心肌病 高血压性心脏病
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New native tissue repair for pelvic organ prolapse:Medium-term outcomes of laparoscopic vaginal stump-round ligament fixation 被引量:1
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作者 Toshiyuki Kakinuma Ayaka Kaneko +3 位作者 Kaoru Kakinuma Ken Imai Nobuhiro Takeshima Michitaka Ohwada 《World Journal of Clinical Cases》 SCIE 2023年第15期3457-3463,共7页
BACKGROUND Laparoscopic sacrocolpopexy for pelvic organ prolapse(POP)is a new and widely used approach;however,ever since the United States Food and Drug Administration warned against the use of surgical mesh,repairs ... BACKGROUND Laparoscopic sacrocolpopexy for pelvic organ prolapse(POP)is a new and widely used approach;however,ever since the United States Food and Drug Administration warned against the use of surgical mesh,repairs performed using patients’tissues[i.e.native tissue repair(NTR)]instead of mesh have attracted much attention.At our hospital,laparoscopic sacrocolpopexy(the Shull method)was introduced in 2017.However,patients with more severe POP who have a long vaginal canal and overextended uterosacral ligaments may not be candidates for this procedure.AIM To validate a new NTR treatment for POP,we examined patients undergoing laparoscopic vaginal stump–round ligament fixation(the Kakinuma method).METHODS The study patients were 30 individuals with POP who underwent surgery using the Kakinuma method between January 2020 and December 2021 and who were followed up for>12 mo after surgery.We retrospectively examined surgical outcomes for surgery duration,blood loss,intraoperative complications,and incidence of recurrence.The Kakinuma method involves round ligament suturing and fixation on both sides,effectively lifting the vaginal stump after laparoscopic hysterectomy.RESULTS The patients’mean age was 66.5±9.1(45-82)years,gravidity was 3.1±1.4(2-7),parity was 2.5±0.6(2-4)times,and body mass index was 24.5±3.3(20.9-32.8)kg/m2.According to the POP quantification stage classification,there were 8 patients with stage Ⅱ,11 with stage Ⅲ,and 11 with stage Ⅳ.The mean surgery duration was 113.4±22.6(88-148)min,and the mean blood loss was 26.5±39.7(10-150)mL.There were no perioperative complications.None of the patients exhibited reduced activities of daily living or cognitive impairment after hospital discharge.No cases of POP recurrence were observed 12 mo after the operation.CONCLUSION The Kakinuma method,similar to conventional NTR,may be an effective treatment for POP. 展开更多
关键词 Pelvic organ prolapse Native tissue repair Laparoscopic surgery Round ligament Kakinuma method
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心脏磁共振在心脏淀粉样变性中的应用进展
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作者 侯为洁 龚艳君 《心血管病学进展》 CAS 2023年第9期796-799,共4页
心脏淀粉样变性(CA)是指大量淀粉样纤维沉积于心肌细胞外间质,影响心脏结构与功能的一种严重疾病,随着病程进展,最终发展为严重的难治性心力衰竭。CA发病率低,目前诊断不足,且与肥厚型心肌病、高血压心脏病、主动脉瓣狭窄等引起心肌肥... 心脏淀粉样变性(CA)是指大量淀粉样纤维沉积于心肌细胞外间质,影响心脏结构与功能的一种严重疾病,随着病程进展,最终发展为严重的难治性心力衰竭。CA发病率低,目前诊断不足,且与肥厚型心肌病、高血压心脏病、主动脉瓣狭窄等引起心肌肥厚的疾病难以鉴别。心脏磁共振具有无创、软组织分辨率高、无电离辐射等优势,其中心肌延迟强化、T1 mapping、细胞外间质容积、T2 mapping、心脏磁共振特征跟踪以及弥散张量成像在CA的临床诊断、疾病分层和预后评估中有重要作用。现就心脏磁共振在CA中的应用进展做一综述。 展开更多
关键词 心脏磁共振 心脏淀粉样变性 心肌延迟强化 Native T1 细胞外间质容积 T2 mapping 心脏磁共振特征跟踪 弥散张量成像
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基于Capstone和流敏感混合执行的自动化反混淆技术
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作者 鲁辉 郭润生 +3 位作者 金成杰 何陆潇涵 王兴伟 田志宏 《软件学报》 EI CSCD 北大核心 2023年第8期3745-3756,共12页
经过多年的技术发展和攻防对抗,Android平台应用加固技术已较为成熟,防护粒度逐步从通用的DEX动态修改发展为高度定制化的Native层混淆机制,通过不断提高逆向分析的难度和工作量,增强客户端代码防护能力.针对近期崛起的OLLVM混淆加固技... 经过多年的技术发展和攻防对抗,Android平台应用加固技术已较为成熟,防护粒度逐步从通用的DEX动态修改发展为高度定制化的Native层混淆机制,通过不断提高逆向分析的难度和工作量,增强客户端代码防护能力.针对近期崛起的OLLVM混淆加固技术,提出一种基于Capstone和流敏感混合执行的自动化反混淆决方案(CiANa).CiANa采用Capstone引擎分析基本块及其指令结构,识别散落在程序反汇编控制流程图中的真实块,并基于流敏感的混合执行确定各真实块间的执行顺序,最后对真实块汇编指令进行指令修复得到反混淆后的可执行二进制文件.实验对比结果表明,CiANa可有效恢复ARM/ARM64架构下经OLLVM混淆的Android Native文件.CiANa是目前为止首个在ARM/ARM64架构中,支持对全版本(Debug/Realse版本)OLLVM进行有效反混淆并生成可执行文件的框架,为逆向分析提供了必要的辅助支撑. 展开更多
关键词 OLLVM混淆 Android Native文件 反混淆
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Accumulation behavior of heavy metals by Bidens pilosa L.from metallurgical slag:effects on plant physiology and absorption characteristics
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作者 WEI Meng SUN Zheng +3 位作者 CUI Bu-li HE Yang DONG Zhi-cheng MENG Ling-xiao 《Journal of Mountain Science》 SCIE CSCD 2023年第9期2580-2591,共12页
Many of the abandoned mining and industrial land in villages and towns are seriously polluted by heavy metals in China,it is necessary for sustainable development to adopt efficient and economical ways to restore the ... Many of the abandoned mining and industrial land in villages and towns are seriously polluted by heavy metals in China,it is necessary for sustainable development to adopt efficient and economical ways to restore the ecology of abandoned mining and industrial land.Pollution level of topsoil contaminated with metallurgical slag from nonferrous metal smelting waste site in Baoding,North China and the heavy metals(HMs)accumulation behavior of Bidens pilosa L.(B.pilosa,native pioneer plant)were studied.Two selected study sites were mainly contaminated by As(270~434 mg/kg),Cd(63~95 mg/kg),Pb(5496~24504 mg/kg)and Zn(4500~21300 mg/kg),which exceed the national standard severely.Investigation of multi-metal accumulation in different parts of B.pilosa indicated that the absorption of toxic metals varied by types,concentration and species of HMs under stress conditions,soil property and plant tissues.The results showed that B.pilosa had excellent ability to accumulate HMs under different HMs stress condition,with the highest accumulation concentration of 85 mg/kg for As,380 mg/kg for Cd,4000 mg/kg for Pb,and 7500 mg/kg for Zn in roots under experimental conditions,respectively.The growth trend of B.pilosa declined with the increase of HMs stress concentration in tested soils.HMs stress led to different degrees of plant toxicity and obstruction of physiological metabolism.Among the plant physiological index,Chla and ChlT decreased 28.0%and 28.1%,37.3%and 35.5%under different stress treatments,respectively.Indicators related to physiological metabolic strength and stress resistance of plant,such as MDA(Malondiadehyde),CAT(catalase),SOD(superoxide dismutase)and SP(soluble protein),all increased with the increase of HMs stress concentration. 展开更多
关键词 Native pioneer plant Heavy metals stress B.pilosa Absorption characteristics Metallurgy waste site
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