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Natural Ventilation around and through Building: A Numerical Study 建筑周围和建筑内部的自然通风:数值研究
A. Kaddour, S. Bekkouche
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引用次数: 0
Structural Evaluation of Cell-Filled Pavement 多孔填充路面的结构评价
Subrata Roy, K. Pathak
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引用次数: 0
Wastes of Oil Drilling: Treatment Techniques and Their Effectiveness 石油钻井废弃物:处理技术及其效果
A. Abbas, H. Messaoud, Aiad Lahcen
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引用次数: 0
Experimental Study on Floating Breakwater Anchored by Piles 桩锚式浮式防波堤试验研究
Yessi Nirwana Kurniadi, Nira Yunita Permata
: Floating breakwaters are applied in order to minimize material cost but still can reduce wave height. In this paper we investigated floating breakwater anchored by piles based on experimental study in the laboratory with model scale 1 : 13. Two types of floating model were tested with several combination wave height, wave period and surface water elevation to determined transmission coefficient. This experimental study proved that floating breakwater with piles can prevent wave height up to 27 cm. The physical model shows that ratio of depth to wave length is less than 0.6 and ratio of model width to wave length is less than 0.3. It is confirmed that if those ratio less than those value the transmission coefficient is higher than 0.5. The result also shown that the first type model of floating breakwater can reduce wave height to 60.4 % while the second one can reduce up to 55.56 %.
:采用浮动防波堤是为了尽量减少材料成本,但仍然可以降低浪高。本文以1:13模型为基础,在室内进行了桩锚式浮式防波堤的试验研究。通过波浪高、波浪周期和水面高程的组合试验,确定了两种浮动模型的透射系数。试验研究证明,桩式浮式防波堤的防浪高可达27 cm。物理模型表明,深度与波长之比小于0.6,模型宽度与波长之比小于0.3。确认当该比值小于该值时,传输系数大于0.5。结果还表明,第一种浮式防波堤模型可使波浪高度降低60.4%,第二种模型可使波浪高度降低55.56%。
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引用次数: 0
Contextualization and Localization: Acceptability of the Developed Activity Sheets in Science 5 Integrating Climate Change Adaptation 情境化与本土化:综合气候变化适应科学5中已开发活动单的可接受性
K. D. Lara
The research aimed to assess the level of acceptability of the developed activity sheets in Science 5 integrating climate change adaptation of grade 5 science teachers in the District of Pililla school year 2016-2017. In this research, participants were able to recognize and understand the importance of environmental education in improving basic education and integrating them in lessons through localization and contextualization. The researcher conducted the study to develop a material to use by Science teachers in Grade 5. It served also as a self-learning resource for students. The respondents of the study were the thirteen Grade 5 teachers teaching Science 5 in the District of Pililla. Respondents were selected purposively and identified by the researcher. A descriptive method of research was utilized in the research. The main instrument was a checklist which include items on the objectives, content, tasks, contextualization and localization of the developed activity sheets. The researcher developed a 2-week lesson in Science 5 for 4 Quarter based on the curriculum guide with integration of climate change adaptation. The findings revealed that majority of respondents are female, 31 years old and above, 10 years above in teaching science and have units in master’s degree. With regards to the level of acceptability, the study revealed developed activity sheets in science 5 is very much acceptable. In view of the findings, lessons in science 5 must be contextualized and localized to improve to make the curriculum responds, conforms, reflects, and be flexible to the needs of the learners, especially the 21 century learners who need to be holistically and skillfully developed. As revealed by the findings, it is more acceptable to localized and contextualized the learning materials for pupils. Policy formation and re-organization of the lessons and competencies in Science must be reviewed and re-evaluated. Lessons in science must also be integrated with climate change adaptation since nowadays, people are experiencing change in climate due to global warming and other factors. Through developed activity sheets, researcher strongly supports environmental education and believes this to serve as a way to instill environmental literacy to students.
本研究旨在评估Pililla学区2016-2017学年五年级科学教师对科学5中整合气候变化适应的活动单的接受程度。在本研究中,通过本土化和情境化,参与者能够认识和理解环境教育在改善基础教育和将其纳入课程中的重要性。研究人员进行这项研究是为了开发一种供五年级科学教师使用的材料。它也为学生提供了自学资源。这项研究的调查对象是在皮利拉区教科学五年级的13名五年级教师。受访者是有目的的选择,并由研究人员确定。本研究采用描述性研究方法。主要工具是一份清单,其中包括关于已编制的活动单的目标、内容、任务、背景和地方化的项目。研究人员根据课程指南开发了为期两周的科学5四季度课程,并整合了气候变化适应课程。调查结果显示,受访者以女性为主,年龄在31岁及以上,从事理科教学10年以上,具有硕士学位。关于可接受程度,研究显示科学5的活动表是非常可接受的。鉴于这些发现,科学课程必须情境化和本地化,以改进课程,使课程响应、符合、反映和灵活地满足学习者的需求,特别是需要全面和熟练发展的21世纪学习者的需求。研究结果表明,学生更容易接受本地化和情境化的学习材料。必须审查和重新评估科学课程和能力的政策形成和重组。科学课程也必须与气候变化适应相结合,因为如今,由于全球变暖和其他因素,人们正在经历气候变化。通过开发活动表,研究者强烈支持环境教育,并认为这是向学生灌输环境素养的一种方式。
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引用次数: 6
Determination of the Effective Economic and/or Demographic Indicators in Classification of European Union Member and Candidate Countries Using Partial Least Squares Discriminant Analysis 用偏最小二乘判别分析确定欧盟成员国和候选国分类中的有效经济和/或人口指标
E. Polat
Partial Least Squares Discriminant Analysis (PLSDA) is a statistical method for classification and consists of a classical Partial Least Squares Regression in which the dependent variable is a categorical one expressing the class membership of each observation. The aim of this study is both analyzing the performance of PLSDA method in classifying 28 European Union (EU) member countries and 7 candidate countries (Albania, Montenegro, Serbia, Macedonia FYR, Turkey moreover including potential candidates Bosnia and Herzegovina and Kosova) correctly to their pre-defined classes (candidate or member) and determining the economic and/or demographic indicators, which are effective in classifying, by using the data set obtained from database of the World Bank.
偏最小二乘判别分析(PLSDA)是一种分类的统计方法,由经典的偏最小二乘回归组成,其中因变量是表示每个观测值的类隶属度的分类变量。本研究的目的是分析PLSDA方法在将28个欧盟成员国和7个候选国(阿尔巴尼亚、黑山、塞尔维亚、马其顿前南斯拉夫共和国、土耳其以及包括潜在候选国波斯尼亚和黑塞哥维那和科索沃)正确分类到其预先定义的类别(候选国或成员国)中的表现,并通过使用从世界银行数据库获得的数据集确定有效分类的经济和/或人口指标。
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引用次数: 2
Enhanced Methane Production from Waste Paper through Anaerobic Co-Digestion with Macroalgae 大型藻类厌氧共消化强化废纸产甲烷研究
C. Rodriguez, Z. El-Hassan, A. Olabi
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引用次数: 1
Evaluation of the End Effect Impact on the Torsion Test for Determining the Shear Modulus of a Timber Beam through a Photogrammetry Approach 用摄影测量法测定木梁剪切模量的扭转试验中末端效应影响的评价
N. Gharavi, Hexin Zhang, Yanjun Xie
The timber beam end effect in the torsion test is evaluated using binocular stereo vision system. It is recommended by BS EN 408:2010+A1:2012 to exclude a distance of two to three times of cross-sectional thickness (b) from ends to avoid the end effect; whereas, this study indicates that this distance is not sufficiently far enough to remove this effect in slender cross-sections. The shear modulus of six timber beams with different aspect ratios is determined at the various angles and cross-sections. The result of this experiment shows that the end affected span of each specimen varies depending on their aspect ratios. It is concluded that by increasing the aspect ratio this span will increase. However, by increasing the distance from the ends to the values greater than 6b, the shear modulus trend becomes constant and end effect will be negligible. Moreover, it is concluded that end affected span is preferred to be depth-dependent rather than thickness-dependant.
利用双目立体视觉系统对木梁扭转试验中的端部效应进行了评价。BS EN 408:2010+A1:2012建议从两端排除2至3倍横断面厚度(b)的距离,以避免端部效应;然而,这项研究表明,这个距离不足以消除这种影响,在细长的横截面。在不同角度和截面下,确定了6根不同纵横比的木梁的剪切模量。实验结果表明,每个试件的末端影响跨度随其纵横比而变化。结果表明,增大宽高比,该跨度将增大。但随着两端距离的增加,剪切模量趋于稳定,端部效应可以忽略不计。此外,还得出结论,末端影响跨度更倾向于深度依赖而不是厚度依赖。
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引用次数: 5
Mathematical modelling of wastewater collection system in Cha-Am municipality using PCSWMM 利用PCSWMM对察安市污水收集系统进行数学建模
T. Htun, K. Irvine, R. Jindal
This study aimed at modelling the wastewater collection system in Cha-Am Municipality using PCSWMM to investigate the quantity of combined sewage delivered to the aeration lagoon treatment system (ALTS). Cha-Am is a small sea resort town in Petchaburi Province located about 175 km southwest of Bangkok and is facing increasing development so it is important to understand current system performance and plan for future build out. PCSWMM was calibrated using observed ALTS inflow data for the period 15 June to 20 July 2015. The model was validated using observed ALTS inflow data for the periods 19 July to 20 October 2015 and 1 October to 31 December 2015, respectively. The 1:1 lines between modeled and observed peak flow and event volume for the calibration events qualitatively showed good correspondence. The r values between modeled and observed peak flow (99%) and event volume (89%) also
本研究旨在利用PCSWMM对Cha-Am市的污水收集系统进行建模,以调查向曝气泻湖处理系统(ALTS)输送的组合污水的数量。差岩是碧武里省的一个海滨度假小镇,位于曼谷西南约175公里处,正面临着日益增长的发展,因此了解当前系统的性能和未来建设的计划非常重要。PCSWMM使用2015年6月15日至7月20日观测到的ALTS入流数据进行校准。该模型分别使用2015年7月19日至10月20日和2015年10月1日至12月31日观测到的ALTS流入数据进行验证。模拟和观测的峰值流量和校准事件的事件体积之间的1:1线定性地显示出良好的对应关系。模拟和观测的峰值流量(99%)和事件体积(89%)之间的r值也相同
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引用次数: 1
An Assessment of the Impacts of Agro-Ecological Practices towards the Improvement of Crop Health and Yield Capacity: A Case of Mopani District, Limpopo, South Africa 农业生态实践对提高作物健康和产量的影响评估:以南非林波波省莫帕尼区为例
T. Manyanya, N. Nethengwe, E. Kori
Agro-ecology has emerged as a front runner in food security and sovereignty, with the UNFCCC and FAO advocating its global adoption. Agro-ecological implementation is theorised to increase crop health and yield by 3 – 10 % in a space of 3 – 10 years. This study aimed to assess the practicality and validity of these assumptions using mainly GIS and remote sensing. Adopting a mixture of Ex-post-facto and Experimental designs necessitated the presence of a control element. Each agro-ecological farm was thus assessed and compared with a conventional farm in the same geographical conditions. Crop health was assessed using satellite images analysed through ArcGIS to produce NDVI and Re-classified outputs whereas yield was calculated from production records. The shift in NDVI-crop ranges indicates changes in crop health over time. Crop health and yield both showed a decrease over 80% of the conventional farms and an increase over 80% of the organic farms. Keywords—Agro-ecology, Agro-ecosystem, Anthropogenic,
农业生态已成为粮食安全和主权领域的领跑者,《联合国气候变化框架公约》和粮农组织正在倡导全球采用该公约。从理论上讲,农业生态实施可以在3 - 10年内使作物健康和产量提高3 - 10%。本研究主要利用地理信息系统和遥感技术来评估这些假设的实用性和有效性。采用事后设计和实验设计的混合设计需要控制元素的存在。因此,对每个农业生态农场进行了评估,并与相同地理条件下的传统农场进行了比较。利用通过ArcGIS分析的卫星图像评估作物健康状况,以产生NDVI和重新分类产出,而根据生产记录计算产量。ndi -作物范围的变化表明作物健康状况随时间的变化。作物健康和产量均显示,传统农场的产量下降了80%以上,有机农场的产量增加了80%以上。关键词:农业生态学;农业生态系统;人为;
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World Academy of Science, Engineering and Technology, International Journal of Environmental and Ecological Engineering
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