Compare and Contrast the Strengths and Weaknesses of Task-based Language Teaching Method and Audio Lingual Teaching Method and Study How They Impact Upon Both the Teachers and the Learners

This essay focused on comparing and contrasts audio lingual method and Task-based language teaching method,demonstrating the strengths and weaknesses of the two methods and discusses how they impact upon both the teachers and the learners.TBLT is the contemporary teaching method with a great number of strong points.It seems that if there is more relatively scientific and effective method,TBLT should give way to it.The ultimate goal is to advocate the comparatively successful teaching method in the field of foreign language education.

Groundwater resources survey of tongchuan city using the audio magnetotelluric method

The development of Tongchuan City,Shaanxi Province,located in the northwestern region of China,is restricted by water resources.The direct current resistivity and induced polarization sounding methods are typically applied in finding urban groundwater.These methods,however,are not effective due to their complicated topography and geological conditions.The application practice shows that the audio magnetotelluric(AMT)method has a large depth of exploration,high work effi ciency,and high lateral resolution.To investigate the distribution of groundwater resources,we deployed three audio-frequency magnetotelluric profiles in the city area.The impedance tensor information of AMT data is obtained using SSMT2000.AMT data dimension analysis reveals that the two-dimensional structural features of the observation area are obvious.The main structure of the observation area is about 45°northeast,as indicated by structural trend analysis.A shallow two-dimensional electrical profile of 1 km in Tongchuan City is obtained by two-dimensional nonlinear conjugate gradient inversion.Finally,combined with regional geological information,the geological structure characteristics reflected by the electrical profile were obtained along with the detailed characteristics of water-rich structures in the area.The infl uence of the structure on the groundwater distribution was analyzed,and the water-rich areas were identifi ed.This work contributes to the prospective development of Tongchuan City.

The Comparison between Audio-lingual Method and Communicative Language Teaching in the Foreign Language Teaching

To increase the efficiency of teaching and improve the quality of teaching, it is necessary to learn the English teaching methodology and put the theory into practice. Audio-lingual Method and Communicative Language Teaching are very important methods in English language teaching. In this essay, I made a comparison and analysis based on their theories and practices. It is beneficial for us to proceed from the reality and use these methods appropriately.

Application of Audio-Magnetotelluric Method for Exploration the Concealed Ore-Bodies in Yuele Lead-Zinc Ore Feild, Daguan County, NE Yunnan Province, China

The results of recent mineral exploration in the Yuele lead-zinc mining area of Daguan County, northeastern Yunnan province, showed that there are much early Paleozoic strata under thick late Paleozoic strata in northeastern Yunnan province, where developed some hidden salt structures (SSs), often with lead-zinc polymetallic mineralization varying degrees along the tension torsional fault (belts) or fracture (joint). The ore-bodies belong to the epigenetic hydrothermal filling vein-type deposit, and the prospecting potential is great. In this area, the superficial mineralization information displayed clear, but the deep mineralization is unknown, so the exploration work is restricted. The audio-megnetotelluric (AMT) surveying is an advantageous method to characterize the size, resistivity and skin depth of the polarizable mineral deposit concealed beneath thick overburden. This paper presents the surveying results using AMT method to evaluate the concealed lead-zinc mineralization in Yuele lead-zinc ore field, Daguancounty, NE Yunnan province, China. After comparing the interpretation result of AMT surveying data with the geological data and the drilling data, it is found that there is some distinct difference in resistivity and polarizable between ore-bodies hosted strata, upper strata and gypsum strata. The results show that AMT method is helpful to identify lead-zinc mineralization under this geological condition.

综合物探在矿山深部资源勘查中的应用

矿产资源是社会和经济发展必不可少的物质基础,目前国内多数老矿山面临已探明储量枯竭的严峻形势,现有的勘查知识和技术难以解决矿山找矿勘查所遇到的特殊难题。针对矿山找矿的特殊性,本文结合安徽省霍邱某矿区的地质及物探资料,在采矿区选取典型剖面进行重磁、微动及可控源音频大地电磁法(Controllable Source Audio Magnetotelluric Method,CSAMT)。以微动和音频大地电磁数据分析推测浅部矿体采空及塌陷区;在深部将微动勘探与重力数据结合,取长补短,通过剪切模量将微动视横波速度与地下介质密度直接联系起来,经已知矿体位置剪切模量的分布规律并结合重磁反演在300 m以深推测了两条近平行层状分布的矿体,矿体长200~250 m,最厚处约50 m;在标高100~200 m的类似S形褶皱拐点处可能为成矿有利位置;同时推测已知主矿体在底板以深还有延伸。通过本次工作,证实了在当前老矿区内,将新技术微动勘探与传统物探方法相结合,各取其长,能提高矿山深边部及外围隐伏矿床(体)定位预测的有效性,挖掘新的找矿潜力。

综合物探方法在碎屑岩地区找水中的应用——以云南宣威大路边村为例

为探索地球物理方法在碎屑地区找水应用的有效性,文章以云南宣威大路边村为研究对象,选取高密度电阻率法、联合剖面法、音频大地电磁法对碎屑岩层进行找水研究。结果表明:三叠系上统飞仙关组(T1f)碎屑岩富水性中等,含水性较均匀;受地面场地狭窄限制,高密度电法及联合剖面法测线长度有限,探测深度较浅,受碎屑岩电阻率小的影响,其找水应用效果不佳,在可探测的深度范围内较难识别基岩裂隙等找水有效异常,需结合其他物探方法甄别异常;音频大地电磁法找水应用效果相对较好,具有较高的横向分辨率,可有效识别碎屑岩中的断裂破碎带及构造裂隙带,表现为相对低阻异常特征;视电阻率单支测深曲线能有效分辨不同深度的岩土层结构,具有较高的纵向分辨率,对裂隙破碎带有较好指示意义。在地面场地较为狭窄的碎屑岩地区开展找水工作,音频大地电磁法结合视电阻单支测深曲线能取得较好效果,以音频大地电磁法确定碎屑岩地区中的裂隙发育带位置,以视电阻单支测深曲线确定裂隙发育带的深度。

基于GMT脚本的AMT数据曲线图批量绘制方法与应用研究

AMT法观测天然交变电磁场,通过数据处理和反演可获得地下介质的电性分布特征,近年来得到了广泛应用。AMT数据曲线图包括测点信息、视电阻率和阻抗相位曲线及数据,可直观反映测点数据质量和曲线类型,是重要的原始资料。加拿大Phoenix Geophysics公司的MTU-5A和V8大地电磁仪是国内最常见的AMT仪器,原始数据经预处理,用MT-Editor软件编辑后可以批量导出PLT格式文件,使用awk命令可从PLT文件中提取测点信息和视电阻率、阻抗相位数据,利用GMT绘图软件将测点信息和数据绘制成图,结合循环语句可达到批量成图的目的。AMT数据曲线图可应用于原始数据质量评价和AMT测深曲线类型判别,在工作区地电规律研究中具有重要意义。

Analysis of prospecting polymetallic metallogenic belts by comprehensive geophysical method

This paper is based on the analysis and research on the silver-lead-zinc polymetallic ore in New Ballyhoo Banner in southern Manzhouli of Inner Mongolia.Because metal mineralization brings rock formations,the geophysical features such as low resistivity,high polarization rate and uneven distribution of magnetization,the comprehensive geophysical methods are adopted including high-precision magnetic measurement,high-power induced polarization,IP field middle gradient and controlled source audio-frequency magnetotellurics.In the survey work of multi-metal ore deposits,from surface sweeping to single point measurement,and from single point to section going deeper layer by layer,the resolution of measurement is continuously improved,and various geophysical methods support and complement each other,so explorers can successfully predict the direction,scale and volume of the metallogenic belts in conjunction with geochemical exploration,geological survey and drilling.It has provided a strong basis for completing the exploration task of predicting the reserve volume of ore bodies.The research conclusions of this exploration case have thus a high reference value in the same type of exploration work.

基于音频分析技术的甲状腺疾病诊断方法

通过结合基于SMOTE数据扩充方法对复杂音频数据的处理能力以及GA-SVM的准确预测能力,提出一种基于SMOTE数据扩充算法的GA-SVM模型,并将其应用于甲状腺疾病的诊断中。实验结果表明,本文方法在甲状腺疾病分类诊断方面表现出良好的性能。相较于其他方法,本文方法在诊断效果方面表现更佳,在甲状腺疾病的分类诊断中具有更高的适用性。

音频注入法及其在家用电器中的应用

噪声污染是当今社会亟需解决的重要问题之一,过量的噪声会对人的听觉和非听觉健康造成不同程度的伤害,传统的噪声控制方法主要以降低声能量为目标。然而,从听觉感知的角度看,降噪的根本目的是降低以烦恼为主的负面效应,为此人们提出了另一种减轻噪声烦恼度的方法,即音频注入法(Audio Injection Method,AIM)。相较于传统的噪声控制方法,AIM具有实施简便、成本低廉等显著优点,在各个领域,尤其是家电领域有广泛的应用前景。综述了国内外针对AIM的研究进展,首先介绍产品声品质评价的综合性参数和属性参数,之后介绍AIM中相消效应的形成与评价,主要包括音频注入法的原理及相关术语、调控声的确定方法、实验方法等,最后给出了AIM在户外及家电产品声品质提升中的实际案例。

艰险山区阵列式三维音频大地电磁勘探方法与应用

艰险山区是铁路工程勘探领域的重难点。地球物理方法具有设备轻便、施工效率高、成果直观的特点,适合艰险山区的探测工作。大跨度硐室横向范围宽,单条物探测线难以满足勘探精度要求。为此,本文介绍了适用于艰险山区大跨度硐室勘察的阵列式三维音频大地电磁勘探方法,该方法测线布置综合考虑了隧道埋深、硐室跨度,以及测点分布均匀性和边缘效应对探测精度的影响,有效提高了外业资料质量,通过联合反演构建了详实的地下三维视电阻率数据体,可直观反映地下地质体异常空间展布情况。研究成果有效揭示了破碎富水岩体地下空间赋存形态,为隧道施工设计提供了参考。

高密度电阻率法和音频大地电磁法在猴场滑坡结构探测中的应用

文章采用高密度电阻率法和音频大地电磁法对贵州省威宁县猴场滑坡区进行探测,探究从浅部到深部岩溶及裂缝发育情况、岩溶滑坡体底界面形态及滑坡体结构特征。通过音频大地电磁法划分了滑坡区地层结构,发现滑坡区发育浅部和深部两层岩溶,尤其在灰岩与泥页岩界面处的深部岩溶,加之煤层开采形成的采空区,是触发滑坡的背景条件;通过高密度电阻率法探测出的裂缝及岩溶发育区域,是滑坡体进一步位移拉裂的脆弱区。分析认为,岩溶发育破坏了滑坡体原来的整体性,使岩溶山体劣化成零散块体,是导致滑坡的关键因素之一。

音频大地电磁法在黔西南金矿区域地电特征研究中的应用

黔西南地区是我国重要的卡林型金矿分布区,区内台地和盆地沉积格局交替频繁,金矿成矿主要受褶皱和断裂构造控制,查明该区地层分布及构造展布特征对于该区金矿找矿具有重要意义。本文以黔西南金矿区为研究靶区,分别进行了音频大地电磁法(Audio Magnetotelluric Method,AMT)在台地相、盆地相不同模式的正反演计算,基于优选的反演模式在区内实地开展了音频大地电磁法的应用研究,取得主要结果与认识:①台地相区地层电性差异明显,基于TE&TM联合反演模式的AMT能有效区分地层、查明断裂构造空间展布特征;②受上部厚低阻层影响,AMT在盆地相区地层区分性弱,基于TM反演模式的AMT能清晰反映褶皱、断裂构造空间展布特征;③黔西南金矿区域地质条件复杂,因地制宜的优选AMT反演模式是实现该区地电结构精细刻画的关键。研究成果与区内实测断层、钻探工程等验证结果吻合较好,充分体现了AMT在该区查明地层分布及构造展布特征的有效性;另一方面进一步明确了黔西南金矿区域台地相、盆地相AMT反演模式,对后人利用AMT在该区及相近地区实现金矿找矿突破具有重要的参考价值。

物探综合方法在某铅锌矿矿山建设超前预报中的应用探讨

该铅锌矿位于贵州省南部,属于典型的喀斯特地形地貌,矿体埋深500 m以内,围岩主要为灰岩、白云岩。对矿山建设及生产构成威胁的主要因素为断层裂隙、富水区块、不稳定岩体等,本文通过使用音频大地电磁法(AMT)、瞬变电磁法、高密度电法三种物探测量方法进行地表和井巷测量,结合地质钻孔、建设巷道等已知条件,对矿山建设生产提供长期的跟踪和服务工作,总结了从面到线、从线到点的超前预报方法,较好地指导了矿山建设和生产工作,该方法具有一定的推广意义,能够为掌子面开挖、井中灾害预报等提供较为客观的评价依据。

AMT与高精度磁测在红石泉地区铀矿勘查中的应用

笔者应用音频大地电磁测深法(AMT)和地面高精度磁法并结合钻探资料,验证了红石泉地区深大隐伏断裂构造的地球物理异常解译标志,对该区主要控矿断裂(F1)及其次级断裂进行了有效探测,揭示了伟晶花岗岩与中元古界变质岩岩性接触带的深部展布特征,大致圈定出了主要成矿岩体伟晶状花岗岩体的空间分布情况。研究成果表明,组合使用AMT和地面高精度测法能够有效解决本区隐伏断裂构造和岩性接触带的探测问题。

可控源音频大地电磁测深法在承德机场临空区地热资源勘查中的应用

为了探查承德机场临空区热储条件,选定有利靶区,利用6条可控源音频大地电磁测深剖面,进行数据处理、分析和反演,获得可靠的二维电阻率模型。根据测深结果,分析研究区深部电性结构特征及主要断裂构造特征,结合地质条件和地热地质资料,对承德机场临空区地热资源进行评价与预测,圈定2处地热资源有利靶区。通过对可控源音频大地电磁测深法在该区域的应用,揭示了地下地热构造的分布特征,为承德机场临空区地热资源的开发提供了技术支撑。

超高密度电阻率法与音频大地电磁测深法对贵州普安某萤石矿区断层的探测效果

本文以贵州省普安县莲花山某调查区萤石成矿断层为研究重点,采用超高密度电阻率法和音频大地电磁测深法对同一断层进行了测量,查明了断层的平面分布情况和深部延伸情况,揭露出剖面峨眉山玄武岩组至茅口组“低阻-中阻-高阻”的三元分层电性结构。以峨眉山玄武岩组与茅口组接触带(蚀变体)的中阻特征为识别标志,结合断层延伸情况,推断出萤石矿体埋深范围,得到了钻孔验证。两种方法均对断层探测有较好的效果,也存在优劣势,超高密度电阻率法探测深度浅,测量精度高,但容易出现多种非目标体异常;音频大地电磁测深法探测深度深,但浅部分辨率较差,测量精度较低。实际工作中,应根据勘探目标的埋深情况选择合适的工作方法或综合两种方法,以达到更加可靠的物探解译成果。

音频大地电磁法在重庆璧山地热勘查中的应用

音频大地电磁法具有设备轻便、勘探深度大、地形适应能力强的特点,适用于山区地热勘查。重庆璧山凤湖仙山地热资源位于沥鼻峡背斜构造东翼,受背斜构造、岩性及地形地貌所控制。基于此,对研究区开展音频大地电磁法勘探,利用电阻率反演剖面图解释对应地层和隐伏断层构造。解释结论与该区的钻孔资料吻合度高,表明音频大地电磁法对于山区碳酸盐岩水热型地热勘探效果明显。

音频大地电磁法在四川容须卡稀有金属矿勘查中的应用——以No.6号伟晶岩脉为例

在四川容须卡稀有金属矿区,为了进一步了解伟晶岩脉深部形态、产状变化特征,选取地表形态、产状变化较大的No.6伟晶岩脉,垂直其地表走向按线距40m、点距10~20 m开展了3条音频大地电磁测深测剖面测量。经综合解释,剖面上M11、M12、M21 M22、M23异常带空间位置存在连续性,且形态与地表探槽揭露的伟晶岩脉膨大、分支现象吻合,异常形态反显示伟晶岩脉深部产状向西侧伏,延伸至100~200 m可能尖灭;M13与原生晕测量预测的隐伏伟晶岩脉吻合。采用PD1、PD1-CM1坑道进行验证,揭露出伟晶岩脉厚11.6 m,产状268°∠83°,取样分析Li2O品位0.866%~1.32%,BeO品位0.046%~0.07%。证明音频大地电磁测深方法在容须卡地区寻找隐伏伟晶岩脉的有效性。