电信 Product & Service Directory

TM Forum推出了一个在线的一站式产品和服务目录,为全球的OSS/BSS专业人士提供了一个全面的平台来查找所需的产品、解决方案和服务信息。该目录依据TM Forum的电信应用地图进行组织,方便买家快速找到合适的产品和服务,同时供应商也能更好地展示其完整的产品系列。
OSS/BSS professionals from around the world now have one place to look for the product,solution or service-related information they need:The TM Forum’s Product & Service Directory.

The TM Forum's Product & Services Directory offers an online,one-stop and comprehensive location,where buyers can get a preview of the products,solutions and services they are looking for,while suppliers can showcase their complete offerings – all at the click of
button.The Product & Services Directory is organized around the TM Forum's Telecom Application Map – a framework for categorizing
applications and services according to specific functional areas.For customers,this makes it easy to locate the right mix of items you
are looking for and for suppliers,you are able to list your offerings to the audiences you want to market to.


[img]http://dl.iteye.com/upload/attachment/454175/7ba35a8a-f56b-393e-b371-c6f51a228e79.jpg[/img]

The TM Forum web site is one of the most active and frequently visited sites in the OSS/BSS arena with an average of 100,000 page impressions per week,from over 68,000 different individuals including:
* Communications Service Providers
* Solution Suppliers
* Content Providers
* System & Software Developers
* System Integrators
* Industry Analysts
【直流微电网】径向直流微电网的状态空间建模与线性化:一种耦合DC-DC变换器状态空间平均模型的方法 (Matlab代码实现)内容概要:本文介绍了径向直流微电网的状态空间建模与线性化方法,重点提出了一种基于耦合DC-DC变换器状态空间平均模型的建模策略。该方法通过对系统中多个相互耦合的DC-DC变换器进行统一建模,构建出整个微电网的集中状态空间模型,并在此基础上实施线性化处理,便于后续的小信号分析与稳定性研究。文中详细阐述了建模过程中的关键步骤,包括电路拓扑分析、状态变量选取、平均化处理以及雅可比矩阵的推导,最终通过Matlab代码实现模型仿真验证,展示了该方法在动态响应分析和控制器设计中的有效性。; 适合人群:具备电力电子、自动控制理论基础,熟悉Matlab/Simulink仿真工具,从事微电网、新能源系统建模与控制研究的研究生、科研人员及工程技术人员。; 使用场景及目标:①掌握直流微电网中多变换器系统的统一建模方法;②理解状态空间平均法在非线性电力电子系统中的应用;③实现系统线性化并用于稳定性分析与控制器设计;④通过Matlab代码复现和扩展模型,服务于科研仿真与教学实践。; 阅读建议:建议读者结合Matlab代码逐步理解建模流程,重点关注状态变量的选择与平均化处理的数学推导,同时可尝试修改系统参数或拓扑结构以加深对模型通用性和适应性的理解。
以下是类 `Product` 的完整定义及四个函数的实现: ```cpp #include <iostream> #include <string> using namespace std; class Product { string name; // 产品名称 int price; // 产品单价 int quantity; // 剩余产品数量 public: Product(string n, int p, int q); Product operator=(const Product& p); friend bool operator>(const Product& p1, const Product& p2); friend ostream& operator<<(ostream& out, Product& t); }; Product::Product(string n, int p, int q) { name = n; price = p; quantity = q; } Product Product::operator=(const Product& p) { name = p.name; price = p.price; quantity = p.quantity; return *this; } bool operator>(const Product& p1, const Product& p2) { if (p1.price > p2.price) { return true; } else { return false; } } ostream& operator<<(ostream& out, Product& t) { out << "Product Name: " << t.name << endl; out << "Price: " << t.price << endl; out << "Quantity: " << t.quantity << endl; return out; } int main() { Product p1("Product1", 10, 50); Product p2("Product2", 20, 30); cout << "p1: " << endl; cout << p1 << endl; cout << "p2: " << endl; cout << p2 << endl; if (p1 > p2) { cout << "p1 is more expensive than p2." << endl; } else { cout << "p2 is more expensive than p1." << endl; } p2 = p1; cout << "p2 after assignment: " << endl; cout << p2 << endl; return 0; } ``` 输出结果为: ``` p1: Product Name: Product1 Price: 10 Quantity: 50 p2: Product Name: Product2 Price: 20 Quantity: 30 p2 is more expensive than p1. p2 after assignment: Product Name: Product1 Price: 10 Quantity: 50 ``` 其中,运算符重载函数 `operator>` 用于比较两个产品的单价大小,运算符重载函数 `operator<<` 用于输出产品的信息,运算符重载函数 `operator=` 用于实现产品对象之间的赋值操作。在主函数中,我们创建了两个产品对象 `p1` 和 `p2`,并对它们进行了比较和赋值操作。
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