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A Bricklayer-Tech Report 一份砖匠技术报告
Pub Date : 2021-07-16 DOI: 10.37394/23205.2021.20.12
V. Winter, Hubert Hickman, I. Winter
Technology is playing an increasingly prominent role in all human endeavors, including education. Tech enables the realization of educational environments that are adaptive, interactive, and immersive. Such environments are well-suited for appropriately engaging student populations comprised of digital natives. Bricklayer is an educational ecosystem whose focus is on the development of visuospatial, mathematical, and computational abilities foundational to computer science. This article gives an updated report on the core (Ed)Tech elements comprising the Bricklayer educational ecosystem.
科技在包括教育在内的所有人类活动中发挥着越来越重要的作用。科技使教育环境实现了适应性、互动性和沉浸式。这样的环境非常适合适当地吸引由数字原住民组成的学生群体。砖匠是一个教育生态系统,其重点是视觉空间,数学和计算机科学基础计算能力的发展。这篇文章给出了一个最新的报告,核心(Ed)技术元素组成的砖匠教育生态系统。
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引用次数: 1
A Study of Information Technology Governance Initiatives On Organizational Performance 信息技术治理举措对组织绩效的影响研究
Pub Date : 2021-04-26 DOI: 10.37394/23205.2021.20.5
Bentolhoda Abdollahbeigi, F. Salehi
The paper aims to clarify the relationship between Information technology governance initiatives on effective information technology governance (ITG) and organizational performance. A quantitative study through a questionnaire survey has done for this research. Data was obtained from seven states in Malaysia, within the manufacturing sector. Structural equation modelling (SEM) was used in this study to analyze the measurement and structural models simultaneously to test the role effect of ITG between information technology governance initiatives and organizational performance. The paper provides empirical insights about the relations between information technology governance initiative and the efficacy of ITG and organizational performance. The results and findings of the research can have beneficial to supporting manufacturing organizations in their efforts towards carrying out improvement activities.
本文旨在阐明有效信息技术治理(ITG)的信息技术治理举措与组织绩效之间的关系。本研究通过问卷调查进行了定量研究。数据来自马来西亚七个州的制造业部门。本研究采用结构方程模型(SEM)同时分析了度量模型和结构模型,以检验ITG在信息技术治理举措与组织绩效之间的作用效应。本文对信息技术治理主动性与信息技术治理效能和组织绩效之间的关系进行了实证分析。研究的结果和发现有利于支持制造组织开展改进活动的努力。
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引用次数: 1
Using Nagios on a Raspberry Pi to Monitor Anetwork with Emphasis on Security 在树莓派上使用Nagios来监控网络,重点是安全
Pub Date : 2021-01-29 DOI: 10.37394/23205.2020.19.31
Andreatos Antonios, Nikolaos Chatzipantou
The objective of this paper is to present an advanceduse of Nagios on Raspberry Pi to monitor a network. RaspberryPi is a tiny, low-cost yet powerful computer board with manyapplications. Network monitoring systems constantly monitor acomputer network for malfunctions and failures of servers andnotifies the network administrator in case of trouble. In ourcase, the free version of Nagios installed on a Raspberry Pi hasbeen used to monitor a network at minimal cost. Furthermore,two bash scripts automating the complex process of Nagiosinstallation on Raspberry Pi, as well as Linux host have beendeveloped. In order to elevate the security level of Networkmonitoring we have proposed a triple set of Raspberry Pi Nagiosservers, each one monitoring hosts and servers including theother two Nagios servers (triple modular redundancy). Finally,custom scripts providing useful information about monitoredhosts, such as their operating system, hardware and networking,as well as a special script examining and rating the security levelof Apache web servers, have been developed and incorporatedinto the network monitoring process.
本文的目的是介绍Nagios在树莓派上的高级用途,以监视网络。RaspberryPi是一个小巧,低成本但功能强大的计算机板,有许多应用程序。网络监控系统不断监控计算机网络的故障和服务器故障,并通知网络管理员的情况下,出现问题。在我们的例子中,安装在Raspberry Pi上的免费版Nagios已经被用来以最低的成本监视网络。此外,还开发了两个bash脚本,用于在Raspberry Pi和Linux主机上自动化nagios安装的复杂过程。为了提升网络监控的安全级别,我们提出了一个三重组的树莓派nagiosserver,每个监视主机和服务器包括其他两个nagiosserver(三重模块化冗余)。最后,开发了自定义脚本,提供有关被监视主机的有用信息,例如操作系统、硬件和网络,以及检查和评估Apache web服务器安全级别的特殊脚本,并将其合并到网络监视过程中。
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引用次数: 1
Fuzzy Based Adaptive Dimension Parking Algorithm Including Obstacle Avoidance for Autonomous Vehicle Parking 基于模糊的自动泊车避障自适应维数算法
Pub Date : 2021-01-29 DOI: 10.37394/23205.2020.19.33
Naitik M. Nakrani, M. Joshi
Autonomous vehicle parking and obstacle avoidance navigation have drawn increased attention in recent times for autonomous vehicle-related solutions. Existing autonomous vehicle parking algorithms generally fail to mimic the human-like tendency to adapt naturally, and most of these designs are practically fixed. They do not preserve adaptive nature with machine dynamics, especially vehicles related. In this paper, a novel fuzzy-based adaptive dimension parking algorithm (FADPA) is proposed that integrates obstacle avoidance capabilities to a standalone parking controller that is made adaptive to vehicle dimensions in order to provide human-like intelligence for parking problems. This algorithm adopts fuzzy membership thresholds with respect to vehicle dimensions to enhance the vehicle's path during parking with taking care of obstacles. It is generalized for all segments of cars, and different simulation results are presented to show the effectiveness of the proposed algorithm.
近年来,自动驾驶汽车相关的解决方案越来越受到人们的关注。现有的自动停车算法通常无法模仿人类自然适应的倾向,而且这些设计中的大多数实际上是固定的。它们不能保持机器动力学的自适应性质,特别是与车辆有关的。本文提出了一种新的基于模糊的自适应维数泊车算法(FADPA),该算法将避障能力集成到一个自适应车辆尺寸的独立泊车控制器中,从而为泊车问题提供类似人类的智能。该算法采用基于车辆尺寸的模糊隶属度阈值,在考虑障碍物的情况下增强车辆在停车过程中的路径。将该算法推广到所有车段,并给出了不同的仿真结果来验证该算法的有效性。
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引用次数: 3
A Novel Controller Placement Using Petri-Nets for SDNs 基于Petri-Nets的新型sdn控制器布局
Pub Date : 2021-01-29 DOI: 10.37394/23205.2020.19.32
Wael Hosny Fouad Aly
Software defined networking (SDN) separates the control and the data planes. This separation brings flexibility to the network. But the decoupling has some drawbacks such as the controller placement problem (CPP). Controller placement is a crucial task which affects the overall networks’ performance. This paper proposes a novel controller placement model that is based on petri-nets to place the SDN’s controllers. The proposed model is called controller placement using petri-nets for SDNs (CPPNSDN). CPPNSDN aims to reduce the average propagation latency among switches and their associated controllers. CPPNSDN divides the network into sub-networks. Each sub-network is governed by a controller. Experiments were conducted on the Internet2/OS3E topology to evaluate the performance of CPPNSDN. Experiments show that CPPNSDN reduces the average latency significantly compared to two reference models. The first reference model is the Modified Density Peaks Clustering (MDPC) and the Optimized Kmeans model. In terms of the overall average latency, the CPPNSDN has shown promising results as it outperformed the MDPC and optimized Kmeans reference models by 7% and 17% respectively. Confidence Interval (CI) used was 90%. This is an ongoing work and the results are promising for more future investigation.
软件定义网络(SDN)将控制平面和数据平面分开。这种分离为网络带来了灵活性。但是这种解耦存在一些缺点,如控制器放置问题(CPP)。控制器的放置是影响整个网络性能的关键任务。本文提出了一种新的基于petri网的控制器放置模型来放置SDN的控制器。提出的模型称为使用petri-nets进行sdn (CPPNSDN)的控制器放置。CPPNSDN旨在降低交换机及其相关控制器之间的平均传播延迟。CPPNSDN将网络划分为多个子网。每个子网由一个控制器管理。在Internet2/OS3E拓扑上进行了实验,以评估CPPNSDN的性能。实验表明,与两种参考模型相比,CPPNSDN显著降低了平均延迟。第一个参考模型是改进的密度峰聚类(MDPC)和优化的Kmeans模型。在总体平均延迟方面,CPPNSDN表现出了令人满意的结果,它比MDPC和优化的Kmeans参考模型分别高出7%和17%。使用的置信区间(CI)为90%。这是一项正在进行的工作,其结果为未来更多的研究提供了希望。
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引用次数: 0
Predicting the Utilization of Mental Health Treatment with Various Machine Learning Algorithms 用各种机器学习算法预测心理健康治疗的使用
Pub Date : 2021-01-29 DOI: 10.37394/23205.2020.19.34
Meera Sharma, Sonok Mahapatra, Adeethyia Shankar, Xiaodi Wang
— In 2017, about 792 million people (more than 10% of the global population) lived their lives with a mental disorder [24]– 78 million of which committed suicide because of it. In these unprecedented times of COVID-19, mental health challenges have been even further exacerbated as home environments have been proven to be major sources of the creation and worsening of poor mental health. Additionally, proper diagnosis and treatment for people with mental health disorders remains underdeveloped in modern-day’s society due to the widely ever-present public stigma attached to caring about mental health. Recently there have been attempts in the data science world to predict if a person is suicidal (and other diagnostic approaches) yet all face major setbacks. To begin, big data has many ethical issues related to privacy and reusability without permission—especially in regards to using feeds from social media. Additionally, people diagnosed with specific mental health conditions may not actually seek treatment, so data may be incorrect. In this research, we address both of these problems by using anonymous datasets to predict the answer to a different question—whether or not people are seeking mental health treatment. We also use a large variety of machine learning and deep learning classifiers and predictive models to predict with a high accuracy rate through statistical analysis.
- 2017年,约有7.92亿人(占全球人口的10%以上)患有精神障碍[24],其中7800万人因此而自杀。在这前所未有的COVID-19时期,由于家庭环境已被证明是造成和恶化精神健康状况不佳的主要根源,精神卫生挑战进一步加剧。此外,在现代社会中,对精神健康障碍患者的适当诊断和治疗仍然不发达,因为公众普遍认为关心精神健康是一种耻辱。最近,数据科学界一直在尝试预测一个人是否有自杀倾向(以及其他诊断方法),但都面临重大挫折。首先,大数据在未经许可的情况下存在许多与隐私和可重用性相关的道德问题,尤其是在使用社交媒体的feed方面。此外,被诊断患有特定心理健康状况的人可能实际上不会寻求治疗,因此数据可能是不正确的。在这项研究中,我们通过使用匿名数据集来预测另一个问题的答案,即人们是否正在寻求心理健康治疗,从而解决了这两个问题。我们还使用了大量的机器学习和深度学习分类器和预测模型,通过统计分析进行预测,准确率很高。
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引用次数: 5
Effects of the Reproduction Number in a Seiird Model Describing the Time Evolution of COVID-19 at Count Ry Level 描述Ry计数水平下COVID-19时间演化的第三模型中繁殖数的影响
Pub Date : 2021-01-29 DOI: 10.37394/23205.2020.19.35
Flavius Guias
We consider a compartmental model of SEIIRDtype which describes the time evolution of the COVID-19 epidemy at the level of a country. For the reproduction number R(t), the crucial parameter which influences the number of new cases, we consider an explicit form as a combination of trigonometric, exponential and gaussian functions. The coefficients of the individual parts can be adapted in order that the profile of R(t) matches different scenarios. Their common structure illustrates the real behaviour observed in most countries. Initially we can observe large values of R(t) which enforce the first wave of the epidemy, followed by a rapid reduction below 1 due to a first lockdown which can have different intensities. The second phase consists of a relaxation of the restrictions having as a consequence an increase of the reproduction number within a range over 1. The numerical simulations show that in this case, after a period of some months with a low level of daily cases, the occurrence of a second wave is unavoidable, being inherent to the nature of the model. The intensity of the second wave depends on how much and how long the reproduction number R(t) has been over the threshold value of 1, but also on the intensity of the first lockdown. All simulations show that the behaviour of the model is very sensitive with respect to the reproduction number. Small changes in its values may have a significant impact on the long-term evolution of the epidemy at the country-level.
我们考虑了一个seiird型的区隔模型,该模型描述了COVID-19流行病在国家层面的时间演变。对于影响新情况数量的关键参数再现数R(t),我们考虑了三角函数、指数函数和高斯函数组合的显式形式。可以调整各个部分的系数,以使R(t)的轮廓匹配不同的场景。它们的共同结构说明了在大多数国家观察到的真实行为。最初,我们可以观察到较大的R(t)值,这导致了流行病的第一波爆发,随后由于第一次封锁的强度不同,R(t)值迅速降至1以下。第二阶段包括放宽限制,结果使繁殖数量在1以上的范围内增加。数值模拟表明,在这种情况下,经过几个月的低水平日病例后,第二波的发生是不可避免的,这是模型固有的性质。第二波疫情的强度取决于繁殖数R(t)超过阈值1的程度和持续时间,但也取决于第一次封锁的强度。仿真结果表明,该模型的行为对繁殖数非常敏感。其价值的微小变化可能对国家一级流行病的长期演变产生重大影响。
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引用次数: 1
Perceptions of Business Students toward Online Education before and in Transition Period of COVID-19 新冠肺炎疫情前和过渡期商科学生对在线教育的看法
Pub Date : 2021-01-14 DOI: 10.37394/23205.2020.19.30
Clare Chua, N. Ruzgar
Covid-19 affects our lifestyles dramatically. It also affects the education styles. Spurred by the Covid19 pandemic, most of the learning in a traditional classroom setting were transferred to online format. This study was designed to assess the students’ perception on the traditional and online learning before Covid-19 pandemic and in transition to the Covid pandemic when all classroom learning is closed and transferred to online based learning. Students were sampled to obtain their general perceptions regarding traditional and online learning. The data were collected via an online survey during October/November 2019 and March/April 2020. Findings indicate that the perceptions of students changed negatively in transition period. A large majority of students agreed before Covid-19, but they disagreed in transition period on the following: online education increases learning levels; students learn more with online courses; zoom is much better than learning in the classroom environment; online courses are easier than traditional courses; I would recommend taking online courses instead of in class courses to a friend or colleague; and I would like to take my other courses in online form. The results show that a sudden change to the system will negatively impact the students and it did not allow time for students to adjust to the change. They are simply not ready to take all the courses online. However, students all agreed the use of technology in classroom increases their engagement and interest in the subject matter
Covid-19极大地影响了我们的生活方式。这也影响了教育方式。受2019冠状病毒病大流行的推动,传统课堂环境中的大部分学习都转移到在线形式。本研究旨在评估学生在Covid-19大流行之前对传统和在线学习的看法,以及在向Covid-19大流行过渡时,当所有课堂学习都关闭并转移到在线学习时。对学生进行抽样调查,以了解他们对传统学习和在线学习的总体看法。这些数据是在2019年10月/ 11月和2020年3月/ 4月通过在线调查收集的。研究结果表明,转型期学生的认知发生了负向变化。绝大多数学生在新冠肺炎疫情前同意这一观点,但在过渡时期,他们在以下方面存在分歧:在线教育提高了学习水平;学生可以通过在线课程学到更多东西;Zoom比在课堂环境中学习要好得多;在线课程比传统课程更容易;我会向朋友或同事推荐在线课程,而不是课堂课程;我想在线上我的其他课程。结果表明,系统的突然变化会对学生产生负面影响,并且没有给学生足够的时间来适应变化。他们还没有准备好在线学习所有的课程。然而,学生们一致认为,在课堂上使用技术提高了他们对学科的参与度和兴趣
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引用次数: 4
Proposing a Knowledge-based Model for Photovoltaic Modules Operating under Shading Conditions 提出一种基于知识的遮阳条件下光伏组件运行模型
Pub Date : 2020-12-29 DOI: 10.37394/23205.2020.19.28
Farhad Khosrojerdi, Stephane Gagnon, Raul Valverde, J. Molson
In a photovoltaic (PV) control system, the application of a maximum power point tracking (MPPT) method is the key factor that enables PV modules to operate efficiently under shading conditions. However, dealing with technical parameters of the MPPT-based controller requires expertise’s knowledge about MPPT methods. PV planning tools overlook to provide system design parameters needed for the control system. Ontologies, as knowledge-based models, provide improved representation, sharing and re-use of the relevant information that facilitate the process of decision-making. In this work, we propose a knowledge-based model representing key concepts associated with an MPPT-based control device. The ontology model is featured with Semantic Web Rule Language (SWRL) allowing the system planner to extract information about MPPT classifications and select an appropriate MPPT method. Moreover, technical recommendations and design information needed for the control system is delivered as well. Using the proposed ontology helps nontechnical practitioners and end-users to define design-related parameters correctly and plan efficient PV systems.
在光伏(PV)控制系统中,最大功率点跟踪(MPPT)方法的应用是光伏组件在遮阳条件下高效运行的关键因素。然而,处理基于MPPT的控制器的技术参数需要专业的MPPT方法知识。光伏规划工具忽略了提供控制系统所需的系统设计参数。本体作为基于知识的模型,提供了改进的表示、共享和重用相关信息,从而促进了决策过程。在这项工作中,我们提出了一个基于知识的模型,表示与基于mppt的控制设备相关的关键概念。本体模型具有语义Web规则语言(Semantic Web Rule Language, SWRL)的特点,允许系统规划者提取关于MPPT分类的信息,并选择合适的MPPT方法。此外,还提供了控制系统所需的技术建议和设计信息。使用提出的本体可以帮助非技术从业者和最终用户正确定义与设计相关的参数,并规划有效的光伏系统。
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引用次数: 1
The Business Transformation and Enterprise Architecture Framework The Applied Holistic Mathematical Model’s Persistence Concept (AHMMPC) 应用整体数学模型的持久性概念(AHMMPC)
Pub Date : 2020-12-23 DOI: 10.37394/23205.2020.19.26
A. Trad
This article proposes a cross domain Applied Holistic Mathematical Model (AHMM) that is the result of a lifetime long research on various types of transformations, applied mathematics, software modelling, heuristic brain-like algorithms, business engineering, financial analysis and global system architecture. This ultimate research is based on an authentic and proprietary mixed research method that is supported by an underlining mainly qualitative holistic neural networks algorithms [1]. The proposed HMM formalism attempts to mimic and simulate some functions of the human brain, which uses empirical processes that are mainly based on the beam-search, like heuristic decision-making process that uses a persistence concept.
本文提出了一个跨领域的应用整体数学模型(AHMM),它是对各种类型的转换、应用数学、软件建模、启发式类脑算法、商业工程、财务分析和全局系统架构的长期研究的结果。这项终极研究是基于一种真实的、专有的混合研究方法,该方法得到了主要是定性整体神经网络算法[1]的支持。提出的HMM形式主义试图模仿和模拟人类大脑的一些功能,它使用主要基于波束搜索的经验过程,如使用持久性概念的启发式决策过程。
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引用次数: 2
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