[Vocabulary Building] Unit 3

-------------------------------> 2007 - 01 - 31 <--------------------------------

AMBI/AMPHI means "on both sides" or "around"; ambi comes from Latin and amphi- from Greek.  An ambidextrous person can use the right and the left hand equally well.  An amphibian, such as a frog or salamander, is able to live and breathe both on land and in water.

ambiguous

ambient

ambivalent

amphitheater

EP/EPI comes from Greek and means variously "upon", "besides", "attached to", "over", "outer", or "after".  An epiphenomenon is a phenomenon that occurs as a result of the original phenomenon.  An epicenter is the portion of the earth's surface directly over the focus of an earthquake.  The epidermis is the outer layer of the skin, overlying the inner layer or "dermis". 

ephemeral

epiphyte

epitaph

epithet

--------------------------------------> 2007 - 02 - 01 <-------------------------------------------

HYPO/HYP as a prefix can mean variously "under", "beneath", "down", or "below normal".  Many hypo-words are medical.  A hypodermic needle injects medication under the skin. 

hypochondriac

hypocrisy / hypocrite / hypocritic

hypothermia

hypothetical

THERM/THERMO comes from the Greek word meaning "warm".

thermal

thermocline

thermocouple

thermonuclear

--------------------------------------> 2007 - 02 - 02 <-------------------------------------------

POLY comes from polys, the Greek word for "many".  Polysyllabic words, of which there are a few in this books, are words of many syllables.  Ploygamy is marriage in which one has many spouses, or at least more than the legal limit of one. A polygraph is an instrument for recording variations in many different bodily pulsations simutanously to reveal whether someone is lying.

polychromatic

polyglot

polymer

polyphony

PRIM comes from primus, the Latin word for "first". 

primal

primiparous / multiparous

primogeniture

primordial

--------------------------------------> 2007 - 02 - 13 <-------------------------------------------

HOM/HOMO comes from homos, the Greek word for "same".  In an English word it can mean "one and the same" or "similar" or "alike".  A homograph is one of two or more words spelled alike but different in meaning or derivation or pronunciation.  A homosexual is a person who exhibits sexual desire toword others of the same sex.

homonym

homogeneous

homologous

homohpone

DIS comes from Latin, where it means "apart".  In English, its meanings have increased to include "do the opposite of"  (as in disestablish), "deprive of" ( as in disfranchise), "exclude or expel from"(disbar), "the opposite of absence of"(disunion, disaffection), "not" (disagreeable), and "completely"(disannul).  The original meaning can still be seen in a word like dissipate, which means "to break up and scatter".

diffraction

dissension

disseminate

dissipate

--------------------------------------> 2007 - 02 - 15 <-------------------------------------------

Latin borrowings

ad hoc

ad hominem

alter ego

de facto

de jure

ex post facto

modus operandi

modus vivendi

本课题设计了一种利用Matlab平台开发的植物叶片健康状态识别方案,重点融合了色彩与纹理双重特征以实现对叶片病害的自动化判别。该系统构建了直观的图形操作界面,便于用户提交叶片影像并快速获得分析结论。Matlab作为具备高效数值计算与数据处理能力的工具,在图像分析与模式分类领域应用广泛,本项目正是借助其功能解决农业病害监测的实际问题。 在色彩特征分析方面,叶片影像的颜色分布常与其生理状态密切相关。通常,健康的叶片呈现绿色,而出现黄化、褐变等异常色彩往往指示病害或虫害的发生。Matlab提供了一系列图像处理函数,例如可通过色彩空间转换与直方图统计来量化颜色属性。通过计算各颜色通道的统计参数(如均值、标准差及主成分等),能够提取具有判别力的色彩特征,从而为不同病害类别的区分提供依据。 纹理特征则用于描述叶片表面的微观结构与形态变化,如病斑、皱缩或裂纹等。Matlab中的灰度共生矩阵计算函数可用于提取对比度、均匀性、相关性等纹理指标。此外,局部二值模式与Gabor滤波等方法也能从多尺度刻画纹理细节,进一步增强病害识别的鲁棒性。 系统的人机交互界面基于Matlab的图形用户界面开发环境实现。用户可通过该界面上传待检图像,系统将自动执行图像预处理、特征抽取与分类判断。采用的分类模型包括支持向量机、决策树等机器学习方法,通过对已标注样本的训练,模型能够依据新图像的特征向量预测其所属的病害类别。 此类课题设计有助于深化对Matlab编程、图像处理技术与模式识别原理的理解。通过完整实现从特征提取到分类决策的流程,学生能够将理论知识与实际应用相结合,提升解决复杂工程问题的能力。总体而言,该叶片病害检测系统涵盖了图像分析、特征融合、分类算法及界面开发等多个技术环节,为学习与掌握基于Matlab的智能检测技术提供了综合性实践案例。 资源来源于网络分享,仅用于学习交流使用,请勿用于商业,如有侵权请联系我删除!
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