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assignmentutor-lab™ 为您的留学生涯保驾护航 在代写数值方法numerical methods方面已经树立了自己的口碑, 保证靠谱, 高质且原创的统计Statistics代写服务。我们的专家在代写数值方法numerical methods代写方面经验极为丰富，各种代写数值方法numerical methods相关的作业也就用不着说。

• Statistical Inference 统计推断
• Statistical Computing 统计计算
• (Generalized) Linear Models 广义线性模型
• Statistical Machine Learning 统计机器学习
• Longitudinal Data Analysis 纵向数据分析
• Foundations of Data Science 数据科学基础

## 数学代写|数值方法作业代写numerical methods代考|Bore-hole pollution

Borehole is one of the capital or most essential sources of water, and it is found underneath the surface of the earth. It is most exposed to pollution or contamination, and this contamination can be due to man-made products such as gasoline, oil, and chemicals, when these chemicals diffuse into the ground. They become not healthy for human use, and these are problems that affect developing countries. The main sources of borehole contamination and diffusion are in farming chemicals, storage tanks, and atmospheric pollutants. The most necessary natural resource around the glohe or world is the ground water. According to research studies, it makes $30 \%$ of the world’s freshwater reserve. Why is borehole an important topic for discussion? (Fig. 2.9)

• Borehole is clean most of the times, it is easily accessible, and it is the most important source of drinking in the world.
• Borehole is needed by farmers in the farm for areas where there is irrigation for crops.
• Countries that have dry regions like Australia, borehole provides a cheap water source because it is the most price-effective for the countries.
Sources of borehole contamination includes:
1. Septic system
This is a chamber made of concrete or plastic that is dug under the ground through which sewage flows for treatment. All waste water disposal systems are supposed to be connected to the city or town sewer system, but not all of them are connected. The ones that are not connected have the tendency to leak some unhealthy organisms or chemicals to the borehole, and this causes health problems to humans.Landfills
A landfill is a place where garbage or waste are buried. Landfills are supposed or expected to have a boundary between the waste material and the subsurface to avoid contamination getting into the water, but if there is no boundary, the contaminants from the land fill will get into the water.
2. Storage tanks
Storage tanks are where oils and gasolines are stored and are either above the ground or below the ground. It has been estimated that around the globe, millions of tanks are buried, and this tanks are left overtime and the metals rust and become weak. It develops leaks, and this oil spills into the ground and gets to the water and serious contamination can occur.
3. The movement of water between subsurface can act as dependable natural blockage to contamination but only works under beneficial conditions.
4. In any area, the stratigraphy of that area plays a vital role in the movement of pollutants. Areas of topography from the dissolution of soluble rocks on limestone bedrock can become prone to subsurface contamination from boreholes. Earthquake faults can also be passages through which contaminants go downwards and the water table is another medium through which contaminants can come into the ground because they are of good essentials for drinking water and waste disposal. Nuclear waste and many of these chemicals go through chemical change or decay, and this lasts for a long period of time in the water reservoirs under the ground.

## 数学代写|数值方法作业代写numerical methods代考|River contamination

River contamination is said to be polluting the water bodies such as rivers normally due to human activities. Humans dump domestic waste, bicycles, garden cuttings, and electronic waste into rivers or river banks (Fig. 2.10). Aside from pollution of the water ways, river contamination also harms wildlife, aquatic life, and increases the risk of flooding. River contamination is a source of concern worldwide, especially in developing nations where about $3.2$ million die as a result of contaminated drinking water and poor sanitation. Globally, about 829,000 people die every year from diarrhea caused by river contamination. WHO also reported that $2.5$ million death cases occur due to dysentery to which river contamination is a significant source. River contamination is caused by several factors not limited to sewage, radioactive substances, agricultural pollution, oil pollution, etc. River contamination could lead to diseases such as cholera and typhoid; lead to the demolition of ecosystems; lead to disorderliness in the food chain; lead to the death of aquatic organisms and sometimes humans. It allows eutrophication to take place.

Sewage are liquid refuse or waste matter that is usually carried off by sewers. It may be the debris from industrial and indigenous (domestic) processes. From research, it was found that not minding the strict regulatory control, researchers have shown that the water and sewage industry accounted for almost a quarter of the serious water incident in England and Wales in 2006. Radioactive substances are substances that are found in the ground because of the radioactive elements commonly found in rock and different types of soil. They are used in industrial, medical, nuclear power plants, and other scientific processes. They are seen in televisions, luculent clocks, wristwatches, and X-ray machines. Its effect of its pollution can last a lifetime as it causes cancer, impaired growth in babies. Agricultural pollution relates to the derivatives from farming practices caused by living and nonliving organisms that lead to polluting of the environment and ecosystems around which causes damage to humans and their gainful interests. Examples are unguided distribution of slurries and manure, tillage, pesticide leaching, fertilizers, and also spills from milk diaries. Oil spillage is the flow of a liquid petroleum hydrocarbon into the environment, most especially the water systems such as rivers, which is usually because of human activities. This oil spillage makes drinking water unhealthy to drink, and it causes death to wildlife and aquatic organisms. It decreases the oxygen level within the aquatic environment. Oil spilling is caused by the following factors:

• Accidents involving oil tankers, pipelines, refineries, etc.
• Carelessness from people handling oil production, for instance when there is leakage during delivery of oil
• Breaking down pieces of equipment
• Natural disasters, i.e., hurricanes
• Deliberate acts by terrorists, illegal dumpers, etc.

# 数值方法代考

## 数学代写|数值方法作业代写numerical methods代考|Bore-hole pollution

• Borehole 大部分时间都很干净，很容易到达，它是世界上最重要的饮用水源。
• 农场中的农民需要钻孔用于有作物灌溉的地区。
• 像澳大利亚这样拥有干旱地区的国家，钻孔提供了一种廉价的水源，因为它对这些国家来说是最具性价比的。
钻孔污染的来源包括：
1. 化粪池系统
这是一个由混凝土或塑料制成的腔室，在地下挖掘，污水流经该腔室进行处理。所有的废水处理系统都应该连接到城市或城镇的下水道系统，但并非所有的污水处理系统都连接。未连接的那些容易将一些不健康的生物或化学物质泄漏到钻孔中，这会给人类带来健康问题
。垃圾填埋场垃圾填埋场是垃圾或废物被掩埋的地方。垃圾填埋场应该或预期在废物和地下之间有一个边界，以避免污染物进入水中，但如果没有边界，来自垃圾填埋场的污染物将进入水中。
2. 储油罐
储油罐是储存油和汽油的地方，位于地面以上或地下。据估计，全球有数以百万计的坦克被掩埋，这些坦克被超时放置，金属生锈并变得脆弱。它会产生泄漏，这种油会泄漏到地下并进入水中，可能会发生严重污染。
3. 水在地下之间的运动可以作为可靠的自然阻挡污染，但只能在有利条件下工作。
4. 在任何地区，该地区的地层在污染物的移动中都起着至关重要的作用。石灰岩基岩上可溶性岩石溶解形成的地形区域容易受到钻孔的地下污染。地震断层也可能是污染物向下移动的通道，而地下水位是污染物进入地下的另一种介质，因为它们是饮用水和废物处理的良好必需品。核废料和其中许多化学物质会发生化学变化或衰变，并且会在地下蓄水池中持续很长时间。

## 数学代写|数值方法作业代写numerical methods代考|River contamination

• 涉及油轮、管道、炼油厂等的事故。
• 处理石油生产的人的粗心大意，例如在石油运输过程中发生泄漏时
• 分解设备
• 自然灾害，即飓风
• 恐怖分子、非法倾倒者等的蓄意行为。

## 有限元方法代写

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## MATLAB代写

MATLAB 是一种用于技术计算的高性能语言。它将计算、可视化和编程集成在一个易于使用的环境中，其中问题和解决方案以熟悉的数学符号表示。典型用途包括：数学和计算算法开发建模、仿真和原型制作数据分析、探索和可视化科学和工程图形应用程序开发，包括图形用户界面构建MATLAB 是一个交互式系统，其基本数据元素是一个不需要维度的数组。这使您可以解决许多技术计算问题，尤其是那些具有矩阵和向量公式的问题，而只需用 C 或 Fortran 等标量非交互式语言编写程序所需的时间的一小部分。MATLAB 名称代表矩阵实验室。MATLAB 最初的编写目的是提供对由 LINPACK 和 EISPACK 项目开发的矩阵软件的轻松访问，这两个项目共同代表了矩阵计算软件的最新技术。MATLAB 经过多年的发展，得到了许多用户的投入。在大学环境中，它是数学、工程和科学入门和高级课程的标准教学工具。在工业领域，MATLAB 是高效研究、开发和分析的首选工具。MATLAB 具有一系列称为工具箱的特定于应用程序的解决方案。对于大多数 MATLAB 用户来说非常重要，工具箱允许您学习应用专业技术。工具箱是 MATLAB 函数（M 文件）的综合集合，可扩展 MATLAB 环境以解决特定类别的问题。可用工具箱的领域包括信号处理、控制系统、神经网络、模糊逻辑、小波、仿真等。

assignmentutor™您的专属作业导师
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