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Using a hybrid honey bees mating optimisation algorithm for solving SONET/SDH design problems 利用杂交蜜蜂交配优化算法解决SONET/SDH设计问题
A. Bernardino, E. Bernardino, J. M. Sánchez-Pérez, J. Pulido, M. A. Vega-Rodríguez
In this paper we propose a hybrid Honey Bees Mating Optimisation (HBMO) algorithm to solve two problems that arise in the design of optical telecommunication networks known as SONET/SDH Ring Assignment Problem (SRAP) and Intraring Synchronous Optical Network Design Problem (IDP). In SRAP the objective is to minimise the number of rings. In IDP the objective is to minimise the number of Add-Drop Multiplexers (ADMs). Both problems are subject to a ring capacity constraint. HBMO algorithm simulates the mating process of real honey bees. We apply a hybridisation of HBMO to solve these two combinatorial optimisation problems. The feasibility of Hybrid HBMO is demonstrated and compared with the solutions obtained by other algorithms from literature.
在本文中,我们提出一种混合蜜蜂交配优化(HBMO)算法来解决在光通信网络设计中出现的两个问题,即SONET/SDH环分配问题(SRAP)和环内同步光网络设计问题(IDP)。在SRAP中,目标是尽量减少环的数量。在IDP中,目标是尽量减少Add-Drop Multiplexers (adm)的数量。这两个问题都受到环容量限制。HBMO算法模拟了真实蜜蜂的交配过程。我们应用HBMO的杂交来解决这两个组合优化问题。论证了混合HBMO算法的可行性,并与文献中其他算法的解进行了比较。
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引用次数: 1
3D medical video transmission over 4G networks 通过4G网络传输3D医疗视频
C. Hewage, M. Martini, Nabeel Khan
Enabling 3D video in e-health applications results in the provision of more natural viewing conditions and improved diagnosis. Recent advances in wireless communications, network technologies and 3D video capture/display mechanisms enable the replacement of 2D video applications of current healthcare services with 3D video, to provide improved perception and diagnosis. Remote surgery and surgery training can benefit in particular from 3D video due to the added dimension of depth. This paper envisages a wireless health system which transmits 3D surgical video over a 3GPP LTE network. The quality of the received 3D video is measured both objectively and subjectively for several packet sizes.
在电子保健应用程序中启用3D视频可以提供更自然的观看条件并改进诊断。无线通信、网络技术和3D视频捕获/显示机制的最新进展,使当前医疗保健服务的2D视频应用能够被3D视频取代,从而提供更好的感知和诊断。由于增加了深度维度,远程手术和手术培训尤其可以从3D视频中受益。本文设想了一种通过3GPP LTE网络传输3D手术视频的无线医疗系统。在不同的数据包大小下,对接收到的3D视频质量进行了客观和主观的测量。
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引用次数: 26
Quantitative EEG evaluation of multimedia intervention program for ADHD children 多媒体干预方案对ADHD儿童的定量脑电图评价
Seung Hyun Lee, J. An
This paper deals with a quantitative evaluation for the therapeutic efficacy of a multimedia intervention program applied to ADHD children to improve their cognitive awareness. The multimedia intervention program consisted of 3 levels in which children can carry out several tasks for focusing attention, sustaining attention, and selective attention. The program was made up of 13 sessions over 24 weeks. Each session took 20 minutes. Four ADHD children between ages from 10 to 12 participated in the program. All of sessions were recorded by 8 channel EEG electrodes which were capped in prefrontal lobe. EEG records were processed by the multilevel discrete wavelet decompositions and independent component analysis (ICA). De-noised signals through the wavelet decomposition were input to the ICA for classifying the independent features. This paper chose theta wave as an evaluation measure for therapeutic improvement. After finishing the program, the overall spectral density of theta wave was decreased as compared with before-procedure. Individual difference of theta waves did not appear all over the experimental results considerably. The proposed multimedia intervention program had evaluated qualitatively [1]. The results showed that the proposed evaluation method can be helpful to quantitatively measure the therapeutic effectiveness of the multimedia intervention program for ADHD children.
本文对多媒体干预程序对ADHD儿童认知意识的改善效果进行了定量评价。多媒体干预项目包括三个层次,儿童可以完成集中注意力、维持注意力和选择性注意力的几个任务。该项目由13个课程组成,为期24周。每次20分钟。四名年龄在10到12岁之间的多动症儿童参加了这个项目。所有的会话记录由8通道EEG电极覆盖在前额叶。采用多层离散小波分解和独立分量分析(ICA)对脑电记录进行处理。将小波分解后的去噪信号输入ICA对独立特征进行分类。本文选择theta波作为治疗改善的评价指标。程序完成后,与程序前相比,θ波的总体谱密度有所下降。在整个实验结果中,θ波的个体差异并不明显。对所提出的多媒体干预方案进行了定性评价[1]。结果表明,所提出的评价方法有助于定量衡量多媒体干预方案对ADHD儿童的治疗效果。
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引用次数: 5
Image tampering detection using methods based on JPEG compression artifacts: a real-life experiment 基于JPEG压缩伪影的图像篡改检测方法:一个真实的实验
B. Mahdian, S. Saic
In this paper we analyze the synergy between forensic image head data consistency analysis and detection of doubles JPEG compression artifacts. We show that image head consistency testing is an effective method for detecting digital images that have been modified. On the other hand, when it is not combined with other forensic methods such as double JPEG detection, a high number of altered photos remained undetected. The same can also be claimed about double JPEG detection. When employed separately without conjunction with other methods, the majority of altered photos remained undetected. In this paper, a quantitative study on this topic is carried out. We show that combining various image forensic methods is a must.
本文分析了法医图像头部数据一致性分析与双重JPEG压缩伪影检测之间的协同作用。结果表明,图像头部一致性测试是检测修改后的数字图像的有效方法。另一方面,当它不与其他取证方法(如双JPEG检测)相结合时,大量被篡改的照片仍未被发现。对于双重JPEG检测也是如此。当单独使用而不与其他方法结合使用时,大多数修改过的照片仍未被发现。本文对这一课题进行了定量研究。我们表明,结合各种图像取证方法是必须的。
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引用次数: 3
Web based e-learning software for optical link design 基于Web的光链路设计电子学习软件
V. Acimovic-Raspopovic, A. Kostić-Ljubisavljević, Snezana Mladenovic, Sladjana Jankovic, Vesna M. Radonjic-Djogatovic
In distance learning, web-based software may provide an alternative to installation of expensive software on the student computer, or an alternative to expensive laboratory equipment. This paper describes the original web-based e-learning software, which enables teaching and learning of the optical link design. Optical link design is an iterative process involving trade-offs to achieve the desired performance: bit error rate, transmission distance, etc., at minimal cost. Fundamental elements of an optical fiber transmission link are the optical transmitter, the optical fiber with associated splices and connectors, and the optical receiver. The student must select appropriate devices from a set of available optical components to meet a given set of system requirements. Data concerning optical equipment that can be used for specific optical link design are stored in a database, that was created for the purpose of this software.
在远程学习中,基于网络的软件可以替代在学生计算机上安装昂贵的软件,或者替代昂贵的实验室设备。本文介绍了独创的基于网络的电子学习软件,实现了光链路设计的教与学。光链路设计是一个迭代的过程,涉及以最小的成本实现所需的性能:误码率,传输距离等。光纤传输链路的基本组成部分包括光发射器、带有接头和连接器的光纤以及光接收器。学生必须从一组可用的光学元件中选择合适的器件,以满足给定的系统要求。有关光学设备的数据可用于特定的光链路设计存储在数据库中,该数据库是为本软件的目的而创建的。
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引用次数: 1
Computer-aided design in synthetic biology: a system designer approach 合成生物学中的计算机辅助设计:系统设计者的方法
Yves Gendrault, M. Madec, C. Lallement, F. Pêcheux, J. Haiech
The development of computer-aided design tools for synthetic biology is currently a hot research topic. However the field is not mature enough to provide a generic, adaptable and reliable tool for potential applications. The purpose of this paper is to present a system designers approach. We highlight, through the work carried out by our team in recent years, the potential, but also the difficulties, of structuring an assisted design flow for synthetic biology. For this task, our idea is to build the design flow for synthetic biology on the foundations of the Electronic Design Automation tools that have proven their efficiency during the past 30 years. Although the overall approach of the microelectronics can be adapted to synthetic biology, some specific steps have to be created from scratch.
合成生物学计算机辅助设计工具的开发是当前研究的热点。然而,该领域还不够成熟,无法为潜在的应用提供通用的、适应性强的和可靠的工具。本文的目的是提出一种系统设计者的方法。通过我们团队近年来的工作,我们强调了构建合成生物学辅助设计流程的潜力,但也存在困难。对于这项任务,我们的想法是在电子设计自动化工具的基础上构建合成生物学的设计流程,这些工具在过去30年中已经证明了它们的效率。虽然微电子学的整体方法可以适用于合成生物学,但有些具体步骤必须从头开始。
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引用次数: 5
Computational inference of difficult word boundaries in DNA languages DNA语言中难词边界的计算推理
G. Tsafnat, Paul Setzermann, S. Partridge, D. Grimm
Many applications in molecular and systems biology exploit similarities between DNA and languages to make predictions about cell function. This approach provides structure to an otherwise monotonous sequence of nucleotides. However, one of the major differences between DNA sequences and text is in how semantic units (e.g. words) are distinguished within them. Whereas words and sentences are separated by spaces and punctuation in natural languages, no such markers exist in DNA. Some semantic units in DNA (e.g. genes) can be identified relatively easily and with relatively high accuracy. Other units may have less known molecular mechanisms and are therefore harder to identify accurately. In this paper we discuss three machine learning methods to elucidate the boundaries of such difficult units: heuristic approaches use hypothesized models of the mechanism to identify word boundaries, supervised machine learning methods generalise labelled examples of word boundaries to a model that can be used to detect these boundaries, and unsupervised machine learning methods infer a model from unlabeled data. As an example, we use a bacterial transposable element called ISEcp1 that moves DNA segments of variable length. We assess the accuracy of each of the above methods using rediscovery experiments. We demonstrate the power of the methods by examining 9 instances of DNA segments associated with ISEcp1 that lack known boundaries. We identified 6 units that include genes that confer resistance to clinically important antibiotics.
分子生物学和系统生物学中的许多应用都利用DNA和语言之间的相似性来预测细胞功能。这种方法为单调的核苷酸序列提供了结构。然而,DNA序列和文本之间的主要区别之一是语义单位(如单词)的区别。在自然语言中,单词和句子是由空格和标点符号分隔的,而在DNA中却没有这样的标记。DNA中的一些语义单位(如基因)可以相对容易地识别,并且具有较高的准确性。其他单位可能具有鲜为人知的分子机制,因此难以准确识别。在本文中,我们讨论了三种机器学习方法来阐明这些困难单元的边界:启发式方法使用机制的假设模型来识别词边界,监督机器学习方法将词边界的标记示例概括为可用于检测这些边界的模型,无监督机器学习方法从未标记的数据中推断模型。作为一个例子,我们使用一种叫做ISEcp1的细菌转座因子来移动可变长度的DNA片段。我们使用再发现实验来评估上述每种方法的准确性。我们通过检查与ISEcp1缺乏已知边界的DNA片段的9个实例来证明该方法的力量。我们确定了6个单位,其中包括对临床重要抗生素产生耐药性的基因。
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引用次数: 3
Transient characterization of concentration-encoded molecular communication with sinusoidal stimulation 正弦刺激下浓度编码分子通信的瞬态表征
M. Mahfuz, D. Makrakis, Hussein T. Mouftah
In this paper we present an analysis of transient loss and detection noise margin of a molecular communication system based on sinusoidal stimulation. The molecular propagation channel is based on ideal diffusion of molecules. A set of possible performance metrics has been proposed and their characteristics have been analyzed for various operating frequencies of the stimulation. Transient loss and detection noise margin have shown a significant dependence on communication range and operating frequency in a noiseless channel. Finally, the effectiveness of the metrics in a frequency-shift keying (FSK) modulated scheme has been explained.
本文分析了基于正弦激励的分子通信系统的瞬态损耗和检测噪声裕度。分子传播通道以分子的理想扩散为基础。提出了一组可能的性能指标,并分析了它们在不同增产操作频率下的特性。在无噪声信道中,瞬态损耗和检测噪声裕度与通信距离和工作频率有很大的关系。最后,解释了在频移键控(FSK)调制方案中度量的有效性。
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引用次数: 8
Case-based reasoning in radiotherapy planning 基于案例的放疗计划推理
S. Petrovic
This paper is concerned with the development of case-based reasoning approaches to radiotherapy planning. One of the main advantages of case-based reasoning is that it enabled us to capturing of clinicians' knowledge and experience in radiotherapy planning. We investigate different issues that arise in the treatment for two cancer sites: (a) prostate cancer, (2) brain tumour and head and neck cancer. The main issue in prostate cancer treatment is determination of radiation dose to be administered in two phases. We developed a case-based reasoning system for dose recommendation in collaboration with an oncologist from the Nottingham University Hospitals NHS Trust, City Hospital Campus. A validation of the developed system is also discussed. The treatment for brain tumour and head and neck cancer addresses different issues compared to the previous one, namely the dose to be delivered is usually the same for all patients, but a variety of parameters have to be determined to achieve the prescribed dose distribution, such as the number of beams, the angles between the beams, the wedges that are used to control the distribution of radiation, etc. A case-based reasoning system for radiotherapy treatment planning of brain tumours is under development in collaboration with the medical physicists from the hospital.
本文关注的是基于案例的推理方法在放疗计划中的发展。基于病例的推理的主要优点之一是,它使我们能够捕捉临床医生的放疗计划的知识和经验。我们研究了两个癌症部位的治疗中出现的不同问题:(a)前列腺癌,(2)脑肿瘤和头颈癌。前列腺癌治疗的主要问题是确定两个阶段的放射剂量。我们与来自诺丁汉大学医院NHS信托,城市医院校区的肿瘤学家合作开发了一个基于病例的剂量推荐推理系统。对所开发的系统进行了验证。脑瘤和头颈癌的治疗方法与之前的治疗方法不同,即对所有患者的剂量通常是相同的,但必须确定各种参数以达到规定的剂量分布,例如光束的数量,光束之间的角度,用于控制辐射分布的楔形物等。与医院的医学物理学家合作,正在开发一种用于脑肿瘤放射治疗计划的基于病例的推理系统。
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引用次数: 2
Do the generalized correlation methods improve time delay estimation of the muscle fiber conduction velocity? 广义相关方法是否改善了肌纤维传导速度的时间延迟估计?
P. Ravier, G. Luu, M. Jabloun, O. Buttelli
Muscle fiber conduction velocity is generally measured by the estimation of the time delay between electromyography recording channels. In the present paper, we propose to identify the best estimator of a constant time delay among those based on generalized correlation methods. To this end, small observation windows are considered and the fractional part of time delay was calculated using a parabolic interpolation. The results show that only Eckart and Hannan-Thomson approaches outperform the basic cross-correlation method when the signal to noise ratio (SNR) is up to 0 dB and the observation duration is 250 ms. This study will be a background for further extension to time-varying delay estimation.
肌纤维传导速度一般是通过估计肌电记录通道之间的时间延迟来测量的。在本文中,我们提出了一种基于广义相关方法的常时滞估计的最佳估计。为此,考虑小观测窗,采用抛物线插值法计算时间延迟的小数部分。结果表明,当信噪比为0 dB、观测时间为250 ms时,只有Eckart和Hannan-Thomson方法优于基本互相关方法。本研究将为进一步扩展时变时延估计奠定基础。
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引用次数: 5
期刊
... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies
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