In the Age of ‘World Englishes’,Native Speaker Teachers or Non-native Speaker Teachers?

This paper attempts to argue that in the age of‘World Englishes', it is not necessary to differentiate native speaker teachers from non-native speaker teachers. It is concluded that non-native speaker teachers can be as effective as their native colleagues and they have equal chance to achieve professional success, even though native speaker teachers have great advantages over non-native teachers in some aspects. It is time for employers, as well as ELT professionals to shut their eyes to the glaring differences between native speaker teachers and non-native speaker teachers and optimize such unique resources.

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)

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.

Native and prosthetic septic arthritis in a university hospital in Saudi Arabia:A retrospective study

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.

Application of Artificial Insemination in Selective Breeding of Native Beef Cattle in Wenzhou

[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.

React Native的跨平台移动应用开发实践

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。

World-Universe Model—Alternative to Big Bang Model

This manuscript provides a comparison of the Hypersphere World-Universe Model (WUM) with the prevailing Big Bang Model (BBM) of the Standard Cosmology. The performed analysis of BBM shows that the Four Pillars of the Standard Cosmology are model-dependent and not strong enough to support the model. The angular momentum problem is one of the most critical problems in BBM. Standard Cosmology cannot explain how Galaxies and Extra Solar systems obtained their substantial orbital and rotational angular momenta, and why the orbital momentum of Jupiter is considerably larger than the rotational momentum of the Sun. WUM is the only cosmological model in existence that is consistent with the Law of Conservation of Angular Momentum. To be consistent with this Fundamental Law, WUM discusses in detail the Beginning of the World. The Model introduces Dark Epoch (spanning from the Beginning of the World for 0.4 billion years) when only Dark Matter Particles (DMPs) existed, and Luminous Epoch (ever since for 13.8 billion years). Big Bang discussed in Standard Cosmology is, in our view, transition from Dark Epoch to Luminous Epoch due to Rotational Fission of Overspinning Dark Matter (DM) Supercluster’s Cores. WUM envisions Matter carried from the Universe into the World from the fourth spatial dimension by DMPs. Ordinary Matter is a byproduct of DM annihilation. WUM solves a number of physical problems in contemporary Cosmology and Astrophysics through DMPs and their interactions: Angular Momentum problem in birth and subsequent evolution of Galaxies and Extrasolar systems—how do they obtain it;Fermi Bubbles—two large structures in gamma-rays and X-rays above and below Galactic center;Diversity of Gravitationally-Rounded Objects in Solar system;some problems in Solar and Geophysics [1]. WUM reveals Inter-Connectivity of Primary Cosmological Parameters and calculates their values, which are in good agreement with the latest results of their measurements.

The Alternative Mathematical Models of the World

The biggest insufficiency of the present mathematics is that it consists, in fact, of the eclectic mixture of two different models. In the first model, the world is taken as infinity and what is chosen as an element here is the unit. Everything is measured by the multiples of the unit. According to the second model, this world is in unity and its mathematical manifestation is the unit. The world is between zero and one. Everything here is measured by fraction The simplified variants of the mathematical model of the world paves the way for the comparative analysis of its alternative philosophical interpretations.

基于React Native的用户交互设计

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。

Ideas on an Alternative Cosmological World Model with Different Initial Conditions

The actual world model, the “Standard Model of Cosmology” (SMC), which dates back to the 1950s, no longer corresponds to the latest state of knowledge on the cosmos. By way of example, the assumption made in the SMC that the expansion of the cosmos is continually being reduced due to the effect of the gravitation exerted on all the matter in the universe is now contradicted by recent measurements. The reason for the expansion of cosmic space in accordance with Hubble’s Law is not physically explained by the SMC but merely stated as a fact. Another example is provided by the “dark phenomena”, which make up by far the greatest part of the energy of the cosmos, and exert a dominant influence on its behaviour. In spite of intensive research over the decades to provide answers to these as well as other open issues in cosmology, no satisfactory and plausible answers have hitherto been found. It is indeed time to propose an alternative cosmological world model to the SMC in the light of the latest insights on the universe.

syngo NATIVE无对比剂MR血管成像技术

syngo NATIVE是西门子磁共振事业部独家推出的无对比剂MR血管成像软件包,经过严格的内部和外部测试,以及全球数十名临床专家的反复应用,获得大量的建议和好评,目前已经成为一种成熟和完善的技术。syngo NATIVE包括两种不同的技术:syngo NATIVE True FISP和syngo NATIVE SPACE,分别用于腹部动脉(特别是肾动脉)和外周动脉的成像。本文分别对这两种技术的原理以及临床检查的要点进行了介绍。

Native XML数据库技术综述

XML成为数据统一描述和表示的标准。如何管理已经出现的大量的XML数据成为重要的问题。NativeXML数据库(NXD)是解决XML数据管理的重要手段。分析和综述了NXD研究现状,以及几个主要研究方向:数据模型、查询语言、存储技术等。分析了NXD的基本特性和具有代表性的NXD系统,最后指出了目前研究存在的不足以及该学科的发展趋势。

心脏磁共振成像Native T1 mapping序列对急性心肌炎的诊断价值

目的 探讨心脏磁共振成像（CMR） Native T1mapping序列对急性心肌炎的诊断价值.方法 选择2014年2月至2015年10月于首都医科大学附属北京安贞医院确诊为急性心肌炎患者25例（急性心肌炎组）和25名健康志愿者（对照组）,分别行CMR黑血T2、Native T1 mapping及钆对比剂延迟强化（LGE）序列扫描,分析对比左心功能、黑血T2信号强度比、T1弛豫时间、LGE出现部位以及黑血T2、Native T1 mapping、LGE三种序列的诊断效能.结果 急性心肌炎组左心室射血分数、左心室每搏输出量、心排血量明显低于对照组[（55±8）％比（59±7）％、（49±16） ml比（54±12） ml、（3.6±1.0） L/min比（3.9±1.2） L/min],T1弛豫时间、T2信号强度比明显高于对照组[（1 308±56）ms比（1 241 ±20） ms、（1.75±0.23）比（1.57 ±0.14）],差异均有统计学意义（均P＜0.05）.对照组没有出现LGE,急性心肌炎组47个心肌节段出现LGE,其中位于心外膜下21处（44.7％）和心肌中层22处（46.8％）,而侧壁22处（46.8％）和下壁23处（48.9％）,25例患者没有出现单独的心内膜下LGE类型.T1mapping序列诊断急性心肌炎的敏感度（91.5％）和准确率（90.4％）要明显高于黑血T2序列（50.3％、64.2％）和LGE序列（73.1％、83.0％）,特异度（89.2％）低于LGE序列（96.3％）而高于黑血T2序列（88.5％）.结论 CMR T1mapping对于急性心肌炎有很好的诊断价值,其相对于黑血T2和LGE有更高的敏感度和准确率,尤其是对于弥漫性病变及微小的局灶性病变,其量化分析的优势更加明显.

一种基于二叉树的Native XML数据库文档编码机制

在对于现有编码机制进行综述的前提下,提出一种新的XML文档编码机制,该编码机制基于完全二叉树的结构顺序编码。在该XML文档编码机制下,判断节点之间祖先-后裔关系算法的时间复杂度仅为O(logn),完全支持更新,并且编码长度较短。

Genetic Diversity in Wild Grapes Native to China Based on Randomly Amplified Polymorphic DNA (RAPD) Analysis

The use of the RAPD technique was investigated on a set of 73 genotypes of 18 wild grape species native to China, and one interspecific hybrid, seven Vitis vinifera L. cultivars, one rootstock cultivar and one strain of V. riparia L. Genetic diversity among these grapes was investigated based on RAPD analysis. The screening of 280 decamer oligonucleotides allowed the selection of 20 primers used for the analysis. A total of 191 RAPD markers were produced from the 20 selected primers. Relationships among the 83 clones or accessions based on their genetic distances were clustered using unweighted pair_group method arithmetic average (UPGMA) analysis in a dendrogram. Twenty_two clusters which fortunately adapted to 22 grape species level were clearly resolved on the dendrogram. The 18 wild grape species native to China were grouped into ten subclusters. The largest distance was found between V. riparia L., V. vinifera L., interspecific hybrid ( V. vinifera L.× V. larbrusca L.) and the wild grapes native to China. Among the wild grapes native to China, the largest distance was found between V. hancockii Hance and the other wild species. V. qinlingensis P.C.He was the second. Large genetic variation occurred among the different flower_type clones in one species.

基于Native XML的武器装备体系需求建模数据管理

武器装备体系需求建模数据的规范化管理是武器装备体系需求分析的基础。针对目前武器装备体系需求建模缺乏统一的底层数据存储管理标准,在分析武器装备体系需求建模数据特征的基础上,以XML为数据载体,制定了基于Native XML数据库的存储策略,设计并实现了基于典型Native XML数据库的武器装备体系需求建模数据管理方法,通过实践应用表明该方法能够为武器装备体系需求建模与分析环境提供有效的底层数据管理和分析支持。

Native XML数据库并发控制协议

并发控制是改善数据库系统事务性能的最重要机制,也是Native XML数据库研究领域的一个难点。通过简化XPath数据模型,定义基于该模型的几种Native XML数据库操作,提出一种新的基于XPath的加锁协议,分析该协议下的调度是可串行化调度,并针对其性能问题进行探讨。

Native App与Web App移动应用发展

移动互联网时代是快速迭代的时代,每款移动应用要保持和得到更多的用户资源,就需要提供最优用户体验.现在主流的移动应用是Native App,随着HTML5标准的定稿,移动web开发技术的成熟越来越成熟,所以Web App移动应用从其开发成本低、迭代周期快、跨平台性上都带来了新的体验.Web App会取代Native App成为主流的移动应用吗?未来的移动应用会如何发展?这些都是移动应用的研究焦点.本文从Native App和Web App的特性、运行效率、迭代周期、开发模式、用户体验等方面对比研究了二者在移动应用领域的发展趋势及未来移动应用的整体发展趋势.

Android平台的Native层加固技术研究与实现

Google推出的NDK使开发者能够使用安全性更好的C/C++语言开发Android应用程序。本文基于对当前DEX加固方案分析、Native代码安全性和ELF文件解析,提出一种基于Native层中特定section的加固方案,实现对关键程序逻辑的隐藏,有效提升了Android程序应对逆向工程的安全性。

Native XML数据库存储研究与改进

介绍Native XML数据库的概念和XML文档在Native XML数据库中3种不同的存储策略,然后以一个开放源代码的Native XML数据库产品——dbXML为对象,研究它的页面存储策略。针对其页面存储策略在"空闲"页面管理上存在的问题,提出尾部页面截取策略,有效地释放"空闲"页面占用的磁盘空间。

Native XML数据库的研究与应用

针对一种新兴的Native XML数据库(NXD)进行了探讨并提供了应用实例。概述了Native XML数据库研究和发展的现状,及Native XML数据库的含义。重点叙述了NativeXML数据库的基本概念、主要特性以及它与其它传统数据库在应用层面上的优缺点比较。并对Native XML数据库的应用领域进行了分析,以Tamino数据库系统为例,介绍了Native XML数据库的功能及应用。