Earn this. Earn it.

一年前的今天,在我浑浑噩噩的生活中,梁婆急急地就去了。

 

一年了。你虚度了吗?回首时,莫要悔恨!

Earn this. Earn it. 失去的,我会都找回来。

我来了,2013。

转载于:https://www.cnblogs.com/riverrun/archive/2012/12/31/2840314.html

Do you like solving technical problems? Are you good at science and math? You might consider it becoming an engineer. Engineers are problem solvers who apply the theories and principles of science and mathematics to research and develop economical solutions to technical problems. Their work is the link between perceived social needs and commercial applications. However, it's always good to let students know what's ahead and help them understand how their choices may impact their life. Here we are providing the pros and cons of an engineering degree. Prose of an engineering degree. Engineering degrees usually dominate the best college degrees lists. It's a bit easier to get a job with an engineering degree than with a humanity's degree. Engineering jobs pay well and are more stable than most other careers. Also, there is a wide variety of job opportunities. If you like solving problems, then the right engineering job will keep you busily happy. You would finally know how things work in real life. You would finally learn the science or engineering behind all machines. You can design and implement your own creation. Engineers often escalate to management positions and earn excellent money over the life of their careers. If a career in research is interesting, an engineering degree can pave the way to further study. An understanding of high level math gives a greater understanding of the world around you. And application of this to real problems can be very satisfying. Abundant job opportunities worldwide. The world will always get more technically advanced, and will need more engineers. Cons of an engineering degree, the engineering coursework can be quite difficult. If you don't have the aptitude for it, then you might not be able to get through it. More time in school than an associates degree. Also, the cost for college will also be relatively high. Often, engineering students have very little opportunity to take business manufacturing, art or writing courses. The amount of stuff you learn at university is negligible to what you do in industry. In industry, you'll probably solve a problem that has never been encountered before. You need to keep learning new stuff to stay current in your field. The work can be stressful, especially when the equipment or structure has the potential to impact human life. Long work hours, it's hard to maintain a good work life balance in the initial phase of an engineering career, workload can be unpredictable and at times very high competitive atmosphere for promotion. Performance is perceived by superiors, determines one's ability to be promoted. Need to do a lot of hard work during studies and also after studies, until you get settled in a good job. Even after that, you have to continue to work hard to keep up with the latest technology. Studying never stops. Well, don't be scared. It is not that difficult as it looks to keep up with the latest technology. The bottom line is, you have to enjoy it. If you like tinkering with electronics, writing computer programs, designing buildings or taking apart engines, then you might enjoy being an engineer. It's a tough decision to make when you're young, but reach out and try to talk to some real engineers. If you're thinking about a career in engineering, it is much easier now with social media to contact people. Thank you for watching this video, and good luck for your career. 生成思维导图
06-14
Create an inheritance hierarchy that a bank might use to represent customers’ bank accounts. All customers at this bank can deposit (i.e., credit) money into their accounts and withdraw (i.e., debit) money from their accounts. More specific types of accounts also exist. Savings accounts, for instance, earn interest on the money they hold. Checking accounts, on the other hand, charge a fee per transaction (i.e., credit or debit). Create an inheritance hierarchy containing base class Account and derived classes SavingsAccount and CheckingAccount that inherit from class Account. Base class Account should include one data member of type double to represent the account balance. The class should provide a constructor that receives an initial balance and uses it to initialize the data member. The constructor should validate the initial balance to ensure that it is greater than or equal to 0.0. If not, the balance should be set to 0.0 and the constructor should display an error message, indicating that the initial balance was invalid. The class should provide three member functions. Member function credit should add an amount to the current balance. Member function debit should withdraw money from the Account and ensure that the debit amount does not exceed the Account’s balance. If it does, the balance should be left unchanged and the function should print the message "Debit amount exceeded account balance." Member function getBalance should return the current balance. Derived class SavingsAccount should inherit the functionality of an Account, but also include a data member of type double indicating the interest rate (percentage) assigned to the Account. SavingsAccount’s constructor should receive the initial balance, as well as an initial value for the SavingsAccount’s interest rate. SavingsAccount should provide a public member function calculateInterest that returns a double indicating the amount of interest earned by an account. Member function calculateInterest should determine this amount by multiplying the interest rate by the account balance. [Note: SavingsAccount should inherit member functions credit and debit as is without redefining them.] Derived class CheckingAccount should inherit from base class Account and include an additional data member of type double that represents the fee charged per transaction. CheckingAccount’s constructor should receive the initial balance, as well as a parameter indicating a fee amount. Class CheckingAccount should redefine member functions credit and debit so that they subtract the fee from the account balance whenever either transaction is performed successfully. CheckingAccount’s versions of these functions should invoke the base-class Account version to perform the updates to an account balance. CheckingAccount’s debit function should charge a fee only if money is actually withdrawn (i.e., the debit amount does not exceed the account balance). [Hint: Define Account’s debit function so that it returns a bool indicating whether money was withdrawn. Then use the return value to determine whether a fee should be charged.] After defining the classes in this hierarchy, write a program that creates objects of each class and tests their member functions. Add interest to the SavingsAccount object by first invoking its calculateInterest function, then passing the returned interest amount to the object’s credit function.
05-12
内容概要:本文系统介绍了算术优化算法(AOA)的基本原理、核心思想及Python实现方法,并通过图像分割的实际案例展示了其应用价值。AOA是一种基于种群的元启发式算法,其核心思想来源于四则运算,利用乘除运算进行全局勘探,加减运算进行局部开发,通过数学优化器加速函数(MOA)和数学优化概率(MOP)动态控制搜索过程,在全局探索与局部开发之间实现平衡。文章详细解析了算法的初始化、勘探与开发阶段的更新策略,并提供了完整的Python代码实现,结合Rastrigin函数进行测试验证。进一步地,以Flask框架搭建前后端分离系统,将AOA应用于图像分割任务,展示了其在实际工程中的可行性与高效性。最后,通过收敛速度、寻优精度等指标评估算法性能,并提出自适应参数调整、模型优化和并行计算等改进策略。; 适合人群:具备一定Python编程基础和优化算法基础知识的高校学生、科研人员及工程技术人员,尤其适合从事人工智能、图像处理、智能优化等领域的从业者;; 使用场景及目标:①理解元启发式算法的设计思想与实现机制;②掌握AOA在函数优化、图像分割等实际问题中的建模与求解方法;③学习如何将优化算法集成到Web系统中实现工程化应用;④为算法性能评估与改进提供实践参考; 阅读建议:建议读者结合代码逐行调试,深入理解算法流程中MOA与MOP的作用机制,尝试在不同测试函数上运行算法以观察性能差异,并可进一步扩展图像分割模块,引入更复杂的预处理或后处理技术以提升分割效果。
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