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problem-solving

  • GoAhead Webs 2.1.5

    ===================================== GoAhead WebServer 2.1.8 Release Notes ===================================== .. NOTES: .. This document is maintained using the reStructuredText markup system. .. You may download this from <http://docutils.sf.net>. Also note that running .. the docutils code requires that a version of Python version 2.1 or later .. be installed on the machine. Since the GoAhead release procedure itself .. runs in Python, this should not be a problem. .. .. To add new entries to the release notes, follow the markup shown below .. (releases should be underlined with a row of '=' characters, each item .. noted within a release should be underlined with '-' characters.

    標(biāo)簽: web server embedded arm

    上傳時(shí)間: 2016-01-30

    上傳用戶:zrxkn

  • GoAhead Webs 2.1.5 embedded webserver arm

    ===================================== GoAhead WebServer 2.1.8 Release Notes ===================================== .. NOTES: .. This document is maintained using the reStructuredText markup system. .. You may download this from <http://docutils.sf.net>. Also note that running .. the docutils code requires that a version of Python version 2.1 or later .. be installed on the machine. Since the GoAhead release procedure itself .. runs in Python, this should not be a problem. .. .. To add new entries to the release notes, follow the markup shown below .. (releases should be underlined with a row of '=' characters, each item .. noted within a release should be underlined with '-' characters.

    標(biāo)簽: web html embed server arm small http

    上傳時(shí)間: 2016-01-30

    上傳用戶:zrxkn

  • 蛇形矩陣(規(guī)律)

    題目描述 蛇行矩陣 Problem 蛇形矩陣是由1開始的自然數(shù)依次排列成的一個矩陣上三角形。 輸入 Input 本題有多組數(shù)據(jù),每組數(shù)據(jù)由一個正整數(shù)N組成。(N不大于100)  輸出 Output 對于每一組數(shù)據(jù),輸出一個N行的蛇形矩陣。兩組輸出之間不要額外的空行。  矩陣三角中同一行的數(shù)字用一個空格分開。行尾不要多余的空格。  樣例輸入 5 樣例輸出 1 3 6 10 15 2 5 9 14 4 8 13 7 12 11

    標(biāo)簽: 數(shù)字規(guī)律 數(shù)組 三角形

    上傳時(shí)間: 2016-02-29

    上傳用戶:lwol2007

  • 傳感器網(wǎng)絡(luò)中基于到達(dá)時(shí)間差有效的凸松弛方法的穩(wěn)健定位

    We consider the problem of target localization by a network of passive sensors. When an unknown target emits an acoustic or a radio signal, its position can be localized with multiple sensors using the time difference of arrival (TDOA) information. In this paper, we consider the maximum likelihood formulation of this target localization problem and provide efficient convex relaxations for this nonconvex optimization problem.We also propose a formulation for robust target localization in the presence of sensor location errors. Two Cramer-Rao bounds are derived corresponding to situations with and without sensor node location errors. Simulation results confirm the efficiency and superior performance of the convex relaxation approach as compared to the existing least squares based approach when large sensor node location errors are present.

    標(biāo)簽: 傳感器網(wǎng)絡(luò)

    上傳時(shí)間: 2016-11-27

    上傳用戶:xxmluo

  • 鋰硫電池隔膜

    Lithium–sulfur batteries are a promising energy-storage technology due to their relatively low cost and high theoretical energy density. However, one of their major technical problems is the shuttling of soluble polysulfides between electrodes, resulting in rapid capacity fading. Here, we present a metal–organic framework (MOF)-based battery separator to mitigate the shuttling problem. We show that the MOF-based separator acts as an ionic sieve in lithium–sulfur batteries, which selectively sieves Li+ ions while e ciently suppressing undesired polysulfides migrating to the anode side. When a sulfur-containing mesoporous carbon material (approximately 70 wt% sulfur content) is used as a cathode composite without elaborate synthesis or surface modification, a lithium–sulfur battery with a MOF-based separator exhibits a low capacity decay rate (0.019% per cycle over 1,500 cycles). Moreover, there is almost no capacity fading after the initial 100 cycles. Our approach demonstrates the potential for MOF-based materials as separators for energy-storage applications.

    標(biāo)簽: 鋰硫電池 隔膜

    上傳時(shí)間: 2017-11-23

    上傳用戶:653357637

  • R-SLAM--Resilient localization and mapping

    Accurate pose estimation plays an important role in solution of simultaneous localization and mapping (SLAM) problem, required for many robotic applications. This paper presents a new approach called R-SLAM, primarily to overcome systematic and non-systematic odometry errors which are generally caused by uneven floors, unexpected objects on the floor or wheel-slippage due to skidding or fast turns.The hybrid approach presented here combines the strengths of feature based and grid based methods to produce globally consistent high resolution maps within various types of environments.

    標(biāo)簽: localization environments challenging Resilient mapping R-SLAM and in

    上傳時(shí)間: 2019-09-15

    上傳用戶:zhudx2007

  • A Foundation in Digital Communication

    Without conceding a blemish in the first edition, I think I had best come clean and admit that I embarked on a second edition largely to adopt a more geometric approach to the detection of signals in white Gaussian noise. Equally rigorous, yet more intuitive, this approach is not only student-friendly, but also extends more easily to the detection problem with random parameters and to the radar problem

    標(biāo)簽: Communication Foundation Digital in

    上傳時(shí)間: 2020-05-26

    上傳用戶:shancjb

  • A Rate Adaptive Channel Estimation Approach

    In this paper, we consider the channel estimation problem in Millimeter wave (mmWave) wireless systems with large antenna arrays. By exploiting the inherent sparse nature of the mmWave channel, we develop a novel rate-adaptive channel estimation (RACE) algorithm, which can adaptively adjust the number of required channel measurements based on an expected probability of estimation error (PEE).

    標(biāo)簽: Estimation Millimeter Adaptive Approach Channel Systems Rate MIMO Wave for

    上傳時(shí)間: 2020-05-26

    上傳用戶:shancjb

  • Femtocells+Technologies+and+Deployment

    In cellular networks, it is estimated that 2 3 of calls and over 90% of data services occur indoors. However, some surveys show that many households and businesses experience a poor indoor coverage problem. It has been identified that poor coverage is the main reason for churn, which is very costly for operators in saturated markets. How to provide good indoor coverage cost effectively is thus a demanding challenge for operators.

    標(biāo)簽: Technologies Femtocells Deployment and

    上傳時(shí)間: 2020-05-27

    上傳用戶:shancjb

  • Full-Duplex+Small+Cells

    The recent developments in full duplex (FD) commu- nication promise doubling the capacity of cellular networks using self interference cancellation (SIC) techniques. FD small cells with device-to-device (D2D) communication links could achieve the expected capacity of the future cellular networks (5G). In this work, we consider joint scheduling and dynamic power algorithm (DPA) for a single cell FD small cell network with D2D links (D2DLs). We formulate the optimal user selection and power control as a non-linear programming (NLP) optimization problem to get the optimal user scheduling and transmission power in a given TTI. Our numerical results show that using DPA gives better overall throughput performance than full power transmission algorithm (FPA). Also, simultaneous transmissions (combination of uplink (UL), downlink (DL), and D2D occur 80% of the time thereby increasing the spectral efficiency and network capacity

    標(biāo)簽: Full-Duplex Cells Small

    上傳時(shí)間: 2020-05-27

    上傳用戶:shancjb

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