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MBA申请essay解析

2018-10-23 17:39:32 | 日記
随着留学的兴起,如今很多学生都选择去美国读MBA,在申请MBA的时候,是需要提供各种文书的,但很多同学都不知道MBA的申请essay该怎么写。其实MBA的申请essay并没有大家想象中的那么难写,只要把该表达的东西表达清楚就行了。

逻辑合理

合理的规划是按照发展规律走的,过去现在未来这三个点,逻辑线要理清楚。如果是专业选择问题的话,那就要从自身出发;仅有想法和兴趣是不能够成为你读新方向的动力;你应该有的顺序应该是:兴趣→尝试→反思→执着。总体的一条线决定了这个职业规划是属于你的。你需要深思熟虑,它是你把以前的经历和对未来的思考放在一起得出的最终结果。

首尾重要

a. Essay开头

对于开头的问题可大可小。中规中矩的开头都是套的行话,求稳的同学可以选择这样的开头,但是这样写的人肯定多,招生官会觉得索然无味。所以说开头就让招生官眼前一亮的话对你自己很有优势,为下面的文章做好铺垫,让人想要读下去。

b. Essay的结尾怎么处理

①首位呼应

如果你的essay开头是一个名言,结尾可以谈一谈你对这句名言的感受以及它在你生活中对你的影响;让读者能够轻易感受到你的essay是一个整体。

②体现你对这所学校的MBA专业的爱;

比如提及自己的领导力的时候,就可以通过这所学校的领导力的特色去分析,这样等于又是找到了一个机会去show你的commitment。

c.规划合理

通过你对长期规划了解后,你大概知道了,这个行业的规划和走势是什么样子的;那么就好确定好自己的短期规划方向怎么走;我的计划大概什么时候开始;短期规划很重要!每年都能看到大神被原本该属于他们的学校拒绝掉。

语言

a.结合背景

不要把essay当成简历去写,而是通过经历了什么,遇到了什么困难,怎么克服的,做到了什么持之以恒的目标,让你学习到了什么,你通过这份学习而来的经验又是怎么运用到你未来的生活中去的;这些都值得好好说道说道。

b.避免术语

每年都会有很多工程师,科学家,码农申请商学院;有些技术行业外的人基本很难懂。在你的领域行得通的事情也很有可能在你的MBA申请essay中行不通。所以不能过多的解释你行业里面的技术术语。essay里术语太多的话,招生官可能不会让你通过。

c.描述生动

能够让读者切身体会你的经历,可以体会到你的心情。这个不多说了,就像托福作文里经典的段子:电影院很吵两种不同的描写方法;

d.用词和句式丰富

很多留学生在这上面花费很多时间,但是大家要知道,这个作用在一篇好essay里的效果是最少的。一定要用自己熟悉的词语去写文章。相似意思的单词在不同的语境下效果是完全不一样的;你要确定这个好用才行,否则外国人绝对不理解的;就好比GMAT语法中的固定搭配我们老师一直说必错,但是根据不同的语境可能这个必错的固定搭配就对了的;要自己熟悉的词汇。

以上就是给同学们分享的关于MBA申请essay写作解析,同学们的修改润色可以按照上面的步骤和技巧去完成。

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Paper代写:The U.S. postal service's e-government

2018-10-23 17:39:07 | 日記
下面为大家整理一篇优秀的paper代写范文- The U.S. postal service's e-government,供大家参考学习,这篇论文讨论了美国邮政的电子政务。电子政务,指的是政府机构使用互联网和其他数字技术,向公民、企业和政府其他部门提供服务的形式。电子政务不是现有政府的电子化,而是利用现代信息技术对政府进行信息化改造,重新构造政府、企业和公民之间的关系,使之比以前更协调,并使企业和公民能够更好地参与政府的管理。美国邮政提供的这些电子政务,有助于各政府机构提高运行效率、改善服务质量并增强服务的便利性。


E-government refers to the form in which government agencies use the Internet and other digital technologies to provide services to citizens, enterprises and other government departments. E-government is not the e-government of the existing government, but the use of modern information technology to transform the government informationization. Second, more open and transparent; Third, it can provide better services. The fourth is to restructure the relationship between the government, enterprises and citizens so as to make it more coordinated than before and enable enterprises and citizens to better participate in government management.

For the past 20 years, the United States has been developing e-government in response to the changing needs of an increasingly digital society. Federal, state and local government agencies are turning to e-government to find innovative ways to increase access to government information and services, improve government operations, reduce costs and improve civic participation. However, at present, there are still lingering defects in the security, usage and usability of e-government in the United States, which hinders users' use of existing e-government and development of new services. First, some sensitive government online transactions lack proper identification. For example, complex government transactions that require witness, identification or sworn proof will still be handled manually; Second, some users are not connected to the Internet or are uncomfortable using online government services. Finally, existing e-government services are often scattered across multiple agencies or websites, making it difficult for users to easily access or browse the services they need.

To address these issues, the federal government has rolled out initiatives such as the 2002 e-government act and the 2012 digital government strategy to provide the best customer service, improve security, and foster cross-sectoral collaboration.

These actions by the federal government have provided an opportunity for the development of the e-government of the us postal service and established a course of action for the long-term development of the us postal service in the digital age. To this end, usps has established a one-stop multi-channel sharing service platform to help governments at all levels address the accessibility, ease of use, and security vulnerabilities of government services. At the same time, the U.S. postal service helps address the duplication of government services, which is important given the current U.S. budget environment. When human interaction is required, the usps retail network provides a very convenient link.

The challenge now for the us government is that, on the one hand, government agencies are experiencing budgetary austerity; Many, on the other hand, have field offices across the country that are costly to operate and that are built repeatedly, parallel to each other, disconnected from each other, and cannot be used by the public. In view of this, usps provides a wide range of efficient and cost-effective e-government services to government agencies. Currently, the United States postal service provides e-government in the following five basic types:

Usps combines existing applications with secure electronic communications and digital-physical hybrid services to support government communications and transactions.

Through its vast retail network, usps provides digital authentication and in-person verification for online government transactions.

With the U.S. postal service's nationwide retail network, agencies that require front-office services can handle applications, status changes and in-person verification.

Institutions that issue prepaid CARDS can register and top up prepaid CARDS through the postal retail network. The postal service also issues postal bills and prepaid CARDS to help citizens with withdrawals, loans, and welfare or social security payments.

Usps USES its vast network of post offices to provide easy broadband access to underserved communities. In addition, usps offers overhead broadband access to expand broadband availability and coverage.

These e-government services provided by the U.S. postal service help government agencies operate more efficiently, improve service quality and make service more convenient. Through the identity verification service, the U.S. postal service helps the government minimize the risk of fraud and abuse of power. In addition, usps's digital-physical hybrid platform builds an important bridge between government, business, and citizens, enabling users to access government services through channels that best meet their needs. The platform also adds an elastic layer to enable it to perform basic public functions in an emergency.

To protect and verify electronic communications with the government, usps has developed a digital communications system. To ensure the confidentiality, integrity, authenticity and non-repudiation of digital transmission records, only authenticated users can use the system. The system links the user's E-mail address to the actual address. For each message sent through a secure electronic communications system, the usps will verify the identity of the sender. Because the recipient's identity is tied to its actual address, messages sent through secure electronic communications are delivered by the United States postal service in the traditional form of mail.

The electronic postmark is a patented technology and registered trademark owned by the United States postal service, which links digital records to time and date stamps. Because of the legal prestige of the electronic postmark in federal and state government laws, in certain cases, documents bearing the electronic postmark have the same validity and enforceability as paper documents. The technology can also provide traceability proof of sending and receiving, as well as evidence of tampering or modification during transmission. The electronic postmark can be used to sign and notarize electronic documents.

Usps helps senders and recipients convert digital documents into physical objects, and vice versa. The usps has developed a hybrid mail application based on government requirements and safety standards, and works with private providers to deliver the service to commercial customers.

Usps provides certified digital storage services for federal, state and local government agencies through email and mixed mail services, helping them eliminate costly paper files and improve electronic records management. Usps electronic archiving solutions, including scanning, digitizing, and archiving documents and data. It is done in a secure electronic storage space accessible only by authenticated users. Each digital document is notarized by a legally enforceable digital signature, or an electronic postmark is used to provide the same legal effect as the original.

With its addressable management database and nationwide physical networks and postal employees, usps is able to verify a wide variety of identities and their attributes. The verification process includes: document verification through face-to-face proofing, collection of personal biometric data, and field verification. With these powerful forms of authentication, usps helps people reduce the hassle of logging into online services, eliminate paper processing, protect user privacy, reduce the risk of identity fraud, and expand new online services.

In addition to verifying identities and their attributes issued by other organizations, usps itself ACTS as an identity provider. Postal digital identity can serve as the basis for many online access tools. In addition to secure access to e-government services, usps digital identity technology can also be used as a core identifier for postal smart CARDS, providing customers with additional services such as government benefit payments and provider Shared health records.

The postal service has also developed a mobile identification solution, an electronic identification solution for mobile and smartphone users. Like a smart card, mobile identity solutions include digital identity attributes that allow users to identify themselves and sign digital documents. The user's digital identity will be stored in the mobile phone's user identification module card. As the government welcomes mobile phone technology, agencies allow individuals to use smartphones instead of smart CARDS as identification markers.

The postal service offers prepaid CARDS to government agencies and prepaid CARDS and electronic money transfers to households that have yet to open a bank account. These payment tools are more attractive because they do not require users to open a bank account or credit history. Users can apply for a usps prepaid card at any post office or submit the application to the mailman. Usps staff will verify the applicant's identity on behalf of the cooperating agency to prevent fraud or identity theft. Cardholders can use the ubiquitous usps retail network to top up, cash out, or remit prepaid CARDS. The card can also be connected to a mobile application, and users can manage their earnings via a smartphone.

The postal service has been able to play an important role in e-government because of its founding purpose, core competencies and assets, as well as the opportunities afforded by the law. First, the development of e-government is in keeping with the historic mission of the us postal service to "bring the nation together" through secure and private communications, a mission that will continue in the digital age. Second, with its strong core competencies and assets, such as digital infrastructure, traditional mail businesses, large post office networks and postman teams, the us postal service is well suited to offer multi-channel delivery of e-government services. Finally, it's important to note that the law allows the U.S. postal service to offer nontraditional services to government agencies without amending the law or signing a federal cross-agency service agreement.

Today, for China post, the implementation of e-government services is operational. In the digital age, China post can, with its unique resources and capabilities, continue to support China's modernization through e-government. As the most familiar face of the Chinese people, China post's e-government will continue to help governments at all levels to meet the people's ever-changing needs in a better, cheaper and faster way, benefiting all Chinese people in the end. Here are some Suggestions on the construction of China post e-government: first, consider establishing a special department within China post to guide and manage the initiatives of China post e-government; Second, seek partnerships with central and local governments to advance each other's plans for cooperation; Thirdly, determine appropriate funding mechanisms, including service fees, private partnerships, Shared institutional funds, etc.; Fourth, examine the successful development of e-government services by foreign postal services. For some postal services, revenue from these value-added services is significant and growing. China post can learn from the successful experience of other postal services, less detour, and strive to achieve a leap in e-government.

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Opinion essay怎么写

2018-10-23 17:38:36 | 日記
Opinion essay,就是一种陈述意见的论文,是国外大学比较少见的一种作业形式,但在报纸和杂志经常能看到这类论文。Opinion essay的作用主要是为了表达作者的意见,所以怎么让论文具有说服力非常重要,最好就是用一些案列和事实来论证。

You can find a lot of writings in magazines and gazettes where the author expresses his opinion in a formal tone. That is what an opinion essay is all about. But it is not just all about the outlook and descriptions of the author based on his judgment. It must be supported by samples as well as reasons to make it more convincing.

Somehow, it is considered as a form of descriptive essay as well. If you were to write this kind of composition here are the things that you must always consider.

When doing the introduction, you (the author) must clearly state his opinion about the topic and make sure that you mention what the topic is all about.

The body of your opinion essay is where you would give all your points of views. However, it must be supported with paragraphs. And in case you have rants about the topic, this is also the part where you would include it.

Never forget that you still have to put a conclusion. Simply summarize the main points and rephrase your opinion at the end.

It may sound easy but some people are having a hard time making this type of essay. It would help a lot if you enlist all of the things that you want to give emphasis and list down the reasons that would help you support your viewpoints. And as much as possible, you should try to start every paragraph using a topic sentence so that readers can easily identify what you are trying to point out.

Since the result would be based from your own judgment, do not forget to put expressions that would remind the readers that what they are reading is based from your opinion. Some of these expressions may include "I believe", "As far as I'm concerned", and many others

关于opinion essay写作浅谈:

You may be required to write an essay that is based on your own personal opinion about a controversial topic. Depending on your objective, your composition could be any length, from a short letter to the editor, to a medium sized speech, or a long research paper. But every piece should contain some basic steps and elements.

1. Collect research to support your opinion. Make sure that your supporting statements match the type of composition you are writing. For example, your evidence will vary from observations (for a letter to the editor) to trustworthy statistics (for a research paper).

2. Acknowledge the previous opinions or arguments that have been made.

"Many students have complained that the dress code implemented by our new headmaster restricts their rights to freedom of expression."

3. Use a transition statement that shows how your opinion adds to the argument or suggests those previous statements and arguments are incomplete or faulty.

Follow up with a statement that expresses your opinion.

"While I agree that the regulations do hamper my ability to express my individualism, I think the economic burden that the new code brings about is a bigger concern."

4. Be careful not to be too sarcastic:

"Many students come from low-income families and they simply don't have the resources to buy new clothing to suit the headmaster's fashion whims."

This statement contains a bit of a sour note. It would only make your argument less professional-sounding. This statement says enough:

"Many students come from low-income families and they simply don't have the resources to buy new clothing on short notice."

5. Next, list supporting evidence to back up your position.

"The recent increase in fees has already led to a decrease in enrollment."

"Some of my friends are struggling to purchase necessities, due to the rising costs."It is important to keep the tone of your essay professional, by avoiding emotional language and any language that expresses an accusation. Use factual statements that are supported by sound evidence.

以上就是关于Opinion essay的写作讲解,虽然Opinion essay大家不一定会遇到,但把它学会也不是什么坏事,所以同学们有空的话可以尝试写作一下。

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Paper代写:The prospect theory of behavioral economics

2018-10-23 17:38:03 | 日記
本篇paper代写- The prospect theory of behavioral economics讨论了行为经济学的前景理论。前景理论是由卡曼尼和沃特斯基提出的经济理论,是心理学及行为科学方面的研究成果。它是一个描述性范式的决策模型,其假设风险的决策过程可以分为编辑和评价两个阶段。我们可以理解为人们在面临获得时往往是小心翼翼,谨慎并不愿冒风险的;而在面对失去时会变得很不甘心,往往这时候会容易冒险。同时,人们对失去和获得的敏感程度是不同的,失去时的往往痛苦感大大超过获得时的快乐感。本篇paper代写由51due代写平台整理,供大家参考阅读。

Prospect theory is another economic theory proposed by kameni and watsky. It is a research result in psychology and behavioral science. It is a descriptive model of decision-making, and its decision-making process of assuming risk can be divided into two stages of editing and evaluation. It has three characteristics. First, most people are risk averse when they are faced with acquisition. The second is that most people prefer risk to loss. Third, people are more sensitive to loss than to gain. Therefore, we can understand that people tend to be cautious when faced with the acquisition, and do not want to take risks; In the face of loss will become very reluctant, often this time will be easy to take risks. At the same time, people have different levels of sensitivity to loss and gain, and the pain of loss is often much greater than the pleasure of gain. However, human rationality is limited. Therefore, when people make a decision about an event or a decision, they do not really think from the perspective of the real value of the object, but judge and make a decision by some relatively easy clues.

Prospect theory has three features. First, most people are risk averse when they are faced with acquisition. The second is that most people prefer risk to loss. Third, people are more sensitive to loss than to gain. These three characteristics correspond to deterministic effect, reflection effect and loss avoidance respectively.

Deterministic effect refers to the decision maker's choice to be considered as deterministic result, that is, when compared with only probable result, the decision maker will choose the most deterministic result, and the probability result will be given a lower weight. As a result of this deterministic effect, policy makers tend to show a risk aversion towards certain potentially positive rewards. That's what we call "a bird in the hand is worth two in the bush". In our lives, we often hear the words "what falls in our hands is our own" and "what falls in our hands is our security". That's why most of us choose the certain benefits between the certain benefits and the "gamble". Above, we call it "deterministic effect".

The reflection effect refers to the asymmetric preference of people for gain and loss. Faced with possible loss, people tend to pursue risk. People tend to be risk-averse when it comes to winning or making a profit. That is, when a person is faced with two choices are losses, will often stir up his adventurous spirit, choose "gamble". This effect is called the "reflex effect", which can be summarized in a common sentence in our daily life: "the lesser of two evils". But this "reflexive effect" is irrational, as in the stock market, where investors like to keep losing stocks. They think the falling stock will rise one day and they can turn a loss into a profit. But the statistics confirm that investors have been holding negative stocks for far longer than profitable ones. That's because most of the stocks long held by investors aren't willing to cut their losses.

Loss aversion means that people's risk preferences are not consistent. When it comes to benefits, people usually behave as risk aversion. When it comes to losses, people act as risk seekers. In real life, people are habitually strongly inclined to avoid loss. According to scientists' experiments, the psychological pain caused by a certain amount of loss is about twice as strong as the feeling of benefit. This is the happiness brought by the 100 yuan we often feel, which cannot offset the pain caused by the loss of 100 yuan. Therefore, we would rather not lose 100 yuan than 100 yuan. This kind of people's sensitivity to loss and gain is asymmetrical, and the sense of pain in the face of loss greatly exceeds the psychology of pleasure in the face of gain, which we call loss aversion. And because people are far more sensitive to losses than to the same amount of gains, in the stock market, even if stock investors' accounts are up and down, they are more often distressed by daily losses and end up dumping stocks and giving up investments that would otherwise be profitable.

In this experiment, we adopted the questionnaire survey method, and the respondents were students, office workers, unemployed persons and other groups. There were six questions in the questionnaire, and each effect corresponded to two choice questions and the questionnaire was recovered for analysis.

In the questionnaire survey we did, question 1: if you cooperate with others on A project A: you will make 30,000 yuan; B you have an 80% chance of making $50,000, and a 20% chance of getting nothing. Which one do you choose? The results showed that 70.59% of the participants chose option A, while only 29.41% chose option B. Question2: there are two kinds of stocks. Stock A has A small dividend but will definitely make A profit; stock B has A big dividend but is also risky. Which one would you choose? In this question, 69.61% of respondents chose stock A and 30.39% chose stock B.

The two findings are a testament to the "certainty effect" : most people are cautious, risk-averse, risk-averse, risk-averse, risk-averse, risk-averse, and afraid of losing their profits. I would rather choose 30,000 yuan with a small amount of income, rather than 50,000 yuan with an 80% probability. Choose must be able to make money but small dividends, is not willing to choose large but uncertain income dividends, which means the degree of certainty ends like more than to the extent of the possible endings like, also reflects the attitude to risk decision element is ending and uncertainty people deal with uncertainty in different ways.

In the questionnaire survey, question 3: if you have a project, you may face two situations. B you have an 80% chance of losing $50,000, and a 20% chance of not losing money. What do you choose? The results showed that 86.27% of the respondents chose option B. And 13.73% of respondents chose option A. Problem 4: suppose there are two bets, C and D, C: there is an 80% chance of losing 5000 yuan. D: there is a 100% chance of losing 3,000 yuan. Which one do you choose? The results showed that 84.31% of respondents chose the C bet and 15.69% chose the D bet.

Both of these results demonstrate the "reflex effect" : people, faced with losses, show a preference for risk, as opposed to gains, and prefer to take a "gamble" in the event of benefits. But the truth is, most people in the state of loss, the heart will be extremely unwilling, would rather take a greater risk to gamble. That is to say, when people are in loss expectation, most people become willing to take risks and pursue greater risks.

In the questionnaire, question 5: suppose there is a gambling game, throw a fair coin, heads for win, tails for lose. If you win, you can get 6,000 yuan. If you lose, you can lose 6,000 yuan. The results showed that 76.47% of the respondents chose not to, while 23.53% chose to. Question 6: today you won the lottery again. You must choose one of the following two options: a. determine the loss of RMB 5,000; You will lose nothing if you flip the coin once. If you flip the coin face up, you will lose 10,000 yuan if you flip the coin face up. However, in this experiment, 86.27% of respondents chose option B, and only 13.73% chose option A.

Question 5 further demonstrates that the pain of loss to the investor is far greater than the comfort of the same amount of return to the investment, which is equal to 6,000 yuan, and the probability of losing or winning is equal to one half. In the consciousness of decision makers, "loss" is more sensitive than "gain". When he sees this bet, he first thinks that he will lose 6,000 yuan, which is much more uncomfortable than the pleasure of winning 6,000 yuan. Question 6 shows that when the decision makers are dealing with loss, they are seeking for risk and also losing. People are more inclined to lose nothing by 50%, but forget that there is also a 50% chance of losing 10,000 yuan. They always pursue the uncertain risk with the attitude of trying.

Foreground theory may seem hard to understand, but it can be seen everywhere in our real life. It is closely related to our real life behavior. In fact, it is the economic behavior concluded by psychologists based on our daily behaviors, which is a common behavior. And so far, prospect theory has been widely applied, in addition to the psychology at the very beginning, in the economy, stocks, marketing, etc.

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Essay代写:Air quality and air pollution

2018-10-23 17:21:45 | 日記
下面为大家整理一篇优秀的essay代写范文- Air quality and air pollution,供大家参考学习,这篇论文讨论了空气质量与空气污染。随着工业及交通运输业的不断发展,大量的有害物质被排放到空气中,改变了空气的正常组成,使空气质量变坏,人类的健康受到严重的威胁。而空气污染指数指的是将常规监测的几种空气污染物浓度简化成为单一的概念性指数值形式,并分级表征空气污染程度和空气质量状况。空气污染指数关注的是吸入受到污染的空气以后几小时或几天内人体健康可能受到的影响。

With the progress of science and technology and the development of economy, people's living standards have been improving day by day. Air pollution has become a hot issue of increasing concern to the people. In recent years, the frequent occurrence of haze has brought great harm to people's life and health. People are longing for the blue sky and white clouds, looking forward to clean air......

Air is the gas that surrounds the earth and sustains both human and biological life. The clean air is made up of gases such as nitrogen 78.06%, oxygen 20.95% and argon 0.93%. These three gases account for about 99.94% of the total air, while other gases account for less than one thousandth of the total. However, with the continuous development of industry and transportation industry, a large amount of harmful substances are discharged into the air, which changes the normal composition of the air and makes the air quality worse, and human health will be affected. In order to improve environmental air quality, prevent ecological damage, create a clean and appropriate environment and protect human health, environmental air quality standards have been formulated in accordance with the environmental protection law of the People's Republic of China and the air pollution prevention and control law of the People's Republic of China. This standard provides for the division of environmental air quality functional areas, standard classification, major pollutant items and concentration limits of these pollutants at various levels, which is the scientific basis for evaluating air quality. It will related area according to the function is divided into three kinds of regions: a region for nature reserves, forest, scenic spot and other need special protection areas, the second area is confirmed in the town planning of residential area, commercial traffic mixed area, cultural area, general industry and rural areas, three kinds of area for a particular industry. Environmental air quality standards are also divided into three levels, one level of regional execution, two levels of regional execution, and three levels of regional execution. To measure the air quality of a certain region to reach several standards is to see the concentration of various pollutants in the air, such as total suspended particulate matter, sulfur dioxide, nitrogen oxides, etc. to reach several standards.

Atmospheric pollution usually refers to the phenomenon that some substances enter the atmosphere due to human activities or natural processes, present enough concentration and reach enough time, and thus endanger human comfort, health and environmental pollution.

Atmospheric pollutants are mainly divided into harmful gases and particulate matter. Their main sources are factory emissions, automobile exhaust, agricultural reclamation, forest fires, smoke, dust and so on.

Air pollution index is to regular monitoring of several kinds of air pollutant concentrations are simplified into a single conceptual index value form, and characterization of air pollution and air quality condition, suitable for said the city's short-term air quality status and changing trend, a group of Numbers is to assess the air quality, it can tell you today or tomorrow the air you breathe is clean and polluted, and you should pay attention to health problems. The API focuses on possible health effects in the hours or days after inhaling contaminated air.

The forecast of air pollution index can remind the public, especially those who are sensitive to air pollution, such as those with heart disease or respiratory problems, to take preventive measures when necessary before serious air pollution occurs.

Routine monitoring of air pollution is an important indicator of air pollution. At present, routine monitoring projects include sulfur dioxide, total suspended particles, nitrogen oxides, carbon monoxide and photochemical oxidants. Dust, total hydrocarbon, lead and fluoride are also monitored in some cities or industrial areas. The new PM2.5 in the newly revised environmental air quality standards is a routine monitoring indicator. Due to the strong scattering capacity of PM2.5 to visible light, which affects visibility, PM2.5 is one of the main factors leading to haze occurrence. PM2.5 particles are small enough to penetrate deep into the respiratory tract, and their possible effects include irritation of the respiratory tract, coughing, dyspnea, reduced lung function, worsening asthma, chronic bronchitis and triggering heart disease.

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