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空调的制冷和制热哪个更耗电?

先说结论:制热更耗电空调制冷原理:  空调器通电后,制冷系统内制冷剂zhi的低压蒸汽被压缩机吸入并dao压缩为高压蒸汽后排至冷凝器。同时轴流风扇吸入的室外空气流经冷凝器,带走制冷剂放出的热量,使高压制冷剂蒸汽凝结为高压液体。高压液体经过过滤器、节流机构后喷入蒸发器,并在相应的低压下蒸发,吸取周围的热量。同时贯流风扇使空气不断进入蒸发器的肋片间进行热交换,并将放热后变冷的空气送向室内。如此室内空气不断循环流动,达到降低温度的目的。  除了制冷,冷暖两用空调还可以制热。其实简单得说,制热就是将制冷过程颠倒

2020-08-12 15:57:51

【论文阅读笔记】Vision-Based Fallen Person Detection for the Elderly

Vision-Based Fallen Person Detection for the Elderly作者:Markus D. Solbach , John K. Tsotsos单位: Department of Electrical Engineering and Computer ScienceYork University, Canada发表信息:IN ACVR 2017论文链接:https://arxiv.org/pdf/1707.07608背景动机:  跌倒对于老年人来说是严重的且

2020-08-12 11:44:28

【论文阅读笔记】:DeepFall – Non-invasive Fall Detection with Deep Spatio-Temporal Convolutional Autoencoders

DeepFall – Non-invasive Fall Detection with Deep Spatio-Temporal Convolutional Autoencoders作者:Jacob Nogas, Shehroz S. Khan, Alex Mihailidis单位: University of Toronto. Toronto Rehabilitation Institute, University Health Network.发表信息:arXiv:1809.00977,Submi

2020-08-12 11:36:07

【论文阅读笔记】:Falls Prediction Based on Body Keypoints and Seq2Seq Architecture

Falls Prediction Based on Body Keypoints and Seq2Seq Architecture作者:Minjie Hua,Yibing Nan,Shiguo Lian单位:CloudMinds Technologies Inc发表信息:IN HBU 2019 (ICCV Workshop)论文链接:https://arxiv.org/pdf/1908.00275背景动机:  老年人摔倒引起的受伤是发病,残疾和医疗保健利用率提高的主要原因。因此,跌倒预测是老年人

2020-08-12 11:25:29

PAT A1030 Travel Plan (30分)

题目链接:https://pintia.cn/problem-sets/994805342720868352/problems/994805464397627392题目描述A traveler’s map gives the distances between cities along the highways, together with the cost of each highway. ...

2020-04-25 16:39:25

PAT A1003 Emergency (25分)

题目链接:https://pintia.cn/problem-sets/994805342720868352/problems/994805523835109376题目描述As an emergency rescue team leader of a city, you are given a special map of your country. The map shows several...

2020-04-23 20:27:56

PAT A1076 Forwards on Weibo (30分)

题目链接:https://pintia.cn/problem-sets/994805342720868352/problems/994805392092020736题目描述Weibo is known as the Chinese version of Twitter. One user on Weibo may have many followers, and may follow many...

2020-04-22 13:37:03

PAT A1034 Head of a Gang (30分)

题目链接:https://pintia.cn/problem-sets/994805342720868352/problems/994805456881434624题目描述One way that the police finds the head of a gang is to check people’s phone calls. If there is a phone call betw...

2020-04-22 12:17:38

1098 Insertion or Heap Sort (25分)

题目链接:https://pintia.cn/problem-sets/994805342720868352/problems/994805368847187968题目描述According to Wikipedia:Insertion sort iterates, consuming one input element each repetition, and growing a sort...

2020-04-20 16:10:16

PAT A1107 Social Clusters (30分)

题目链接:https://pintia.cn/problem-sets/994805342720868352/problems/994805361586847744题目描述When register on a social network, you are always asked to specify your hobbies in order to find some potential ...

2020-04-19 19:06:26

PAT A1066 Root of AVL Tree (25分)

题目链接:https://pintia.cn/problem-sets/994805342720868352/problems/994805404939173888题目描述An AVL tree is a self-balancing binary search tree. In an AVL tree, the heights of the two child subtrees of any...

2020-04-19 17:05:53

从目标检测到小目标检测

目标检测目标检测(object detection),就是在给定的一张图片中精确找到物体所在的位置,并标注出物体的类别。所以,目标检测要解决的问题就是物体在哪里以及是什么的整个流程问题。但是,在实际照片中,物体的尺寸变化范围很大,摆放物体的角度、姿态、在图片中的位置都不一样,物体之间可能还有重叠现象,这使得目标检测的难度变得很大。目标检测近些年取得了较大发展,主要原因就是卷积神经网络...

2020-04-18 10:58:31

训练集、测试集、验证集与模型选择

原文链接:https://blog.csdn.net/hohaizx/article/details/81013985 在机器学习过程中,为了找到泛化性能最好的那个函数,我们需要确定两方面的参数:1、假设函数参数,也就是我们通常所说的ww等,这些参数被...

2020-04-15 10:41:10

无人驾驶中的传感器

传感器概览无人驾驶作为高度集成的系统,所使用的传感器种类繁多、技术跨度较大,如果要做分类,个人认为可以简单分为服务于感知系统的和服务于定位系统的。展开来看,常见的有激光雷达、相机、毫米波、超声波;组合导航(IMU)轮速计等,但再细分,其实又可以分出很多子类。这里讲一下常用的几种感知传感器。激光雷达按线数分有1、4、8、16、32、40、64、128线等,按工作原理分有机械旋转式和固态式,而固态又分...

2020-04-12 22:31:10

无人驾驶—激光雷达与相机

1.激光雷达与摄像头性能对比在无人驾驶环境感知设备中,激光雷达和摄像头分别有各自的优缺点。摄像头的优点是成本低廉,用摄像头做算法开发的人员也比较多,技术相对比较成熟。摄像头的劣势,第一,获取准确三维信息非常难(单目摄像头几乎不可能,也有人提出双目或三目摄像头去做);另一个缺点是受环境光限制比较大。激光雷达的优...

2020-04-12 19:33:22

PAT A1091 Acute Stroke (30分)

题目链接:https://pintia.cn/problem-sets/994805342720868352/problems/994805375457411072题目描述One important factor to identify acute stroke (急性脑卒中) is the volume of the stroke core. Given the results of ima...

2020-04-12 18:58:49

PAT A1103 Integer Factorization (30分)

题目链接:https://pintia.cn/problem-sets/994805342720868352/problems/994805364711604224题目描述The K−P factorization of a positive integer N is to write N as the sum of the P-th power of K positive integers....

2020-04-11 18:51:39

PAT A1099 Build A Binary Search Tree (30分)

题目链接:https://pintia.cn/problem-sets/994805342720868352/problems/994805367987355648题目描述A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties:The left ...

2020-04-11 10:16:56

PAT A1064 Complete Binary Search Tree (30分)

题目链接:https://pintia.cn/problem-sets/994805342720868352/problems/994805407749357568题目描述A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties:The left ...

2020-04-10 23:31:32

PAT A1043 Is It a Binary Search Tree (25分)

题目链接:https://pintia.cn/problem-sets/994805342720868352/problems/994805440976633856题目描述A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties:The left ...

2020-04-10 23:15:33

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