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Mortality Analysis of Early COVID-19 Cases in the Philippines Based on Observed Demographic and Clinical Characteristics 基于观察到的人口统计学和临床特征的菲律宾早期COVID-19病例死亡率分析
Q4 Multidisciplinary Pub Date : 2021-06-03 DOI: 10.32871/rmrj2109.01.09
This study aims to determine the demographic, epidemiologic, and clinical characteristics of COVID-19 cases that are highly susceptible to COVID-19 infection, with longer hospitalization and at higher risk of mortality and to provide insights that may be useful to assess the vaccination priority program and allocate hospital resources. Methods that were used include descriptive statistics, nonparametric analysis, and survival analysis. Results of the study reveal that women are more susceptible to infection while men are at risk of longer hospitalization and higher mortality. Significant risk factors to COVID-19 mortality are older age, male sex, difficulty breathing, and comorbidities like hypertension and diabetes. Patients with these combined symptoms should be considered for admission to the COVID-19 facility for proper management and care. Also, there is a significant delay in the testing and diagnosis of those who died, implying that timeliness in the testing and diagnosis of patients is crucial in patient survival.
本研究旨在确定COVID-19感染易感、住院时间较长、死亡风险较高的病例的人口学、流行病学和临床特征,为评估疫苗接种优先计划和分配医院资源提供有用的见解。使用的方法包括描述性统计、非参数分析和生存分析。研究结果显示,女性更容易受到感染,而男性则面临住院时间更长和死亡率更高的风险。COVID-19死亡率的重要危险因素是年龄较大、男性、呼吸困难以及高血压和糖尿病等合并症。有这些综合症状的患者应考虑进入COVID-19设施进行适当的管理和护理。此外,在对死者进行检测和诊断方面存在严重延误,这意味着对患者进行检测和诊断的及时性对患者的生存至关重要。
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引用次数: 4
The Philippine K to 12 Junior Science Program in Thematic Instruction 主题教学中的菲律宾K至12年级初级科学课程
Q4 Multidisciplinary Pub Date : 2021-06-03 DOI: 10.32871/RMRJ2109.01.10
The present study describes the attempt to achieve the competencies of the Philippine K to 12 Science Program through thematic instruction. It seeks to address the challenges encountered by science teachers with the current curriculum design. The researchers used a thematic instructional model in giving classroom instruction. Two sets of pre-service teachers, taking part as facilitators and as observers, were purposely chosen in the study. The researchers used convergent mixed methods design in analysing the pre-service teachers' experience and observations in teaching through thematic instruction. Results revealed that the thematic instruction implemented in the study has the potential to address the challenges of the current K to 12 science curriculum in terms of design, lesson content, and implementation. Consequently, the results suggest that the thematic instruction design in the study can be used to help achieve the desired outcomes of the K to 12 Science Curriculum.
本研究描述了通过主题教学来实现菲律宾K至12科学课程能力的尝试。它试图通过当前的课程设计来解决科学教师所遇到的挑战。研究人员在课堂教学中采用了主题教学模式。本研究特意选择了两组职前教师,分别作为促进者和观察员参与研究。本研究采用融合混合方法设计,分析职前教师在专题教学中的经验与观察。结果表明,在研究中实施的主题教学有可能解决当前K至12科学课程在设计、课程内容和实施方面的挑战。因此,研究结果表明,研究中的主题教学设计可以帮助实现K - 12科学课程的预期成果。
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引用次数: 0
Remote Learning Readiness and Challenges: Perceptions and Experiences among Tertiary State University Management Students 远程学习准备与挑战:州立大学管理专业学生的认知与经验
Q4 Multidisciplinary Pub Date : 2021-05-31 DOI: 10.32871/RMRJ2109.01.08
COVID-19 has disrupted the education system globally, leading education institutions to migrate into remote learning. This study on online learning readiness and competence was conducted among management students on their perceptions on the importance of, and the confidence level of their online learning competence factors. Using the Student Readiness for Online Learning (SROL) instrument, the results show that the students consider Technical Competence as very important and that they are somewhat confident with their online learning competence. Both perceptions of the importance of the online competence factors and competency levels significantly correlate with the students’ self-report of whether or not they have learned in the course. Among the eight online learning challenges, the students find the “lack of technical skills in using online learning” as the least challenging. This study concludes with the recommendations that pedagogical and technological interventions be pursued to address the inadequacies in the online teaching-learning process.
新冠肺炎疫情扰乱了全球教育体系,导致教育机构转向远程学习。本研究以管理专业学生为研究对象,就其在线学习能力因素的重要性及信心程度,进行在线学习准备与能力的研究。使用学生在线学习准备(SROL)工具,结果显示学生认为技术能力是非常重要的,他们对自己的在线学习能力有一定的信心。在线能力因素的重要性和能力水平的感知都与学生是否在课程中学习的自我报告显著相关。在在线学习的八项挑战中,学生们认为“缺乏使用在线学习的技术技能”是最不具挑战性的。本研究最后提出了教学和技术干预的建议,以解决在线教学过程中的不足之处。
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引用次数: 3
A Sound-based Machine Learning to Predict Traffic Vehicle Density 基于声音的机器学习预测交通车辆密度
Q4 Multidisciplinary Pub Date : 2021-05-29 DOI: 10.32871/RMRJ2109.01.05
Traffic flow mismanagement is a significant challenge in all countries especially in crowded cities. An alternative solution is to utilize smart technologies to predict traffic flow. In this study, frequency spectrum describing traffic sound characteristics is used as an indicator to predict the next five-minute vehicle density. Sound frequency and vehicle intensity are collected during a thirteen-hour data gathering. The collected sound intensity and frequency are then used to learn three machine-learning models - support vector machine, artificial neural network, and random forest and to predict vehicle intensity. It was found out that the performances of the three models based on root-mean-square-error values are 12.97, 16.01, and 10.67, respectively. These initial and satisfactory results pave a new way to predict traffic flow based on traffic sound characteristics which may serve as a better alternative to conventional features.
交通流量管理不善是所有国家面临的重大挑战,特别是在拥挤的城市。另一种解决方案是利用智能技术来预测交通流量。在本研究中,描述交通声音特征的频谱被用作预测未来五分钟车辆密度的指标。在13小时的数据收集过程中收集声音频率和车辆强度。然后将收集到的声强和频率用于学习三种机器学习模型——支持向量机、人工神经网络和随机森林,并预测车辆强度。结果表明,基于均方根误差值的三种模型的性能分别为12.97、16.01和10.67。这些初步和令人满意的结果为基于交通声音特征预测交通流量铺平了新的道路,这可能是传统特征的更好替代。
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引用次数: 0
Sequential Pattern Mining of Tourist Spatiotemporal Movement 游客时空运动的序列模式挖掘
Q4 Multidisciplinary Pub Date : 2021-05-29 DOI: 10.32871/RMRJ2109.01.07
The study aimed to develop a software application to capture tourist activity information, extract movement patterns from the dataset through sequential pattern mining (SPM), and visualize spatiotemporal movement. Tourist activity information was captured through crowdsourced trajectory movements by scanning unique QR (Quick Response) codes for each visited tourist spots. The AprioriAll algorithm was used to find frequent trajectory patterns on tourist visits. The resulting maximal k-sequences and their subsequences represent the recommended trip itinerary. The spatial and temporal movements were visualized through a flow map and a heat map, respectively. The directed edges in the flow map show the recommended sequence of tourist sites to visit. The heat map shows the density of tourist visits in different areas at time intervals. The application was validated with selected tour planning experts to verify functional suitability, usability, and acceptability. Experimental results show positive indicators that the application met the users’ expectations.
本研究旨在开发一个软件应用程序来捕获旅游活动信息,通过顺序模式挖掘(SPM)从数据集中提取运动模式,并将时空运动可视化。通过扫描每个旅游景点独特的QR(快速响应)代码,通过众包轨迹运动捕获旅游活动信息。AprioriAll算法用于寻找游客访问的频繁轨迹模式。得到的最大k序列及其子序列表示推荐的行程。空间和时间的运动分别通过流程图和热图可视化。流程图中的有向边显示了推荐的旅游景点顺序。热图显示了不同地区在不同时间间隔内的旅游密度。该应用程序由选定的旅游规划专家进行验证,以验证功能的适用性、可用性和可接受性。实验结果表明,该应用程序达到了用户的期望。
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引用次数: 0
Uniform Minimum Variance Unbiased Estimator of Fractal Dimension 分形维数一致最小方差无偏估计
Q4 Multidisciplinary Pub Date : 2021-05-29 DOI: 10.32871/RMRJ2109.01.06
The paper introduced the concept of a fractal distribution using a power-law distribution. It proceeds to determining the relationship between fractal and exponential distribution using a logarithmic transformation of a fractal random variable which turns out to be exponentially distributed. It also considered finding the point estimator of fractional dimension and its statistical characteristics. It was shown that the maximum likelihood estimator of the fractional dimension λ is biased. Another estimator was found and shown to be a uniformly minimum variance unbiased estimator (UMVUE) by Lehmann-Scheffe’s theorem.
本文用幂律分布引入了分形分布的概念。通过对指数分布的分形随机变量进行对数变换,确定分形与指数分布之间的关系。研究了分数维的点估计量及其统计特性。证明了分数维λ的极大似然估计是有偏的。利用Lehmann-Scheffe定理发现并证明了另一个估计量是一致最小方差无偏估计量(UMVUE)。
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引用次数: 0
Utilization of Wastewater from Different Sources as Potential Electrical Energy Source 不同来源的废水作为潜在电能的利用
Q4 Multidisciplinary Pub Date : 2021-05-28 DOI: 10.32871/RMRJ2109.01.04
This study is about the generated electricity from wastewater using carbon electrodes with the absence/presence of salt bridge through the biofilm anode of the microbial fuel cell (MFC) technology. The three wastewater samples used were from a pond, an abaca pulp mill, and rice fields. Results showed that one of the abaca pulp mill treatments, using carbon rod electrodes with salt bridge presence, reached the highest mean voltage and current to 578.7 mV and 0.2022 mV, respectively. The study revealed that the number of sensible power generation days, from start to end of experimentation, has a significant difference between treatments. Throughout the 20-day fermentation process, a total count of 8.94x105 colony forming units (CFU) per ml was found and purified from the biofilm anodes from pond wastewater. Likewise, 9.14x105 CFU per ml isolates from the abaca pulp mill, and 1.65x106 CFU per ml isolates from the rice field.
本文研究了利用无盐桥碳电极通过微生物燃料电池(MFC)的生物膜阳极技术从废水中发电。所使用的三个废水样本分别来自一个池塘、一个芭蕉纸浆厂和稻田。结果表明,采用盐桥碳棒电极的abaca浆磨处理,平均电压和电流最高,分别为578.7 mV和0.2022 mV。研究表明,从实验开始到结束的有效发电天数在不同处理之间有显著差异。在20天的发酵过程中,从池塘废水的生物膜阳极中发现并纯化的菌落形成单位(CFU)总数为8.94 × 105 / ml。同样,从abaca纸浆厂分离出9.14 × 105 CFU / ml,从稻田分离出1.65 × 106 CFU / ml。
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引用次数: 1
Angle Trisection, Bhaskara’s Proof, and Pythagorean Theorem 角三分法,巴斯卡拉证明,勾股定理
Q4 Multidisciplinary Pub Date : 2021-05-28 DOI: 10.32871/RMRJ2109.01.01
This paper deals with 1) angle trisection, 2) Bhaskara’s first proof, and 3) Pythagorean theorem. The purpose of this paper is threefold. First, to show a new, direct method of trisecting the 900 angle using unmarked straight edge and compass; secondly, to show Bhaskara’s first proof of the Pythagorean theorem (c2 = a2 + b2) as embedded in this new, direct trisection of the 900 angle; lastly, to show the derivation of the Pythagorean theorem from this trisection of the 900 angle. This paper employs the direct dissection method. It concludes by presenting four points: a) the concept of trisectability as distinct from concept of constructability; b) the trisection of the 900 angle as really a new, different method; c) Bhaskara’s first proof of the Pythagorean theorem as truly embedded in this trisection of the 900 angle and; d) another way of deriving Pythagorean theorem from this trisection of the 900 angle.
本文讨论了1)角三切分,2)Bhaskara第一次证明,3)勾股定理。本文的目的有三个。首先,提出了一种利用无标直边和罗经直接分900角的新方法;第二,证明巴舍罗对毕达哥拉斯定理(c2 = a2 + b2)的第一个证明,包含在900角的新的直接三切线中;最后,从900角的三切线推导出毕达哥拉斯定理。本文采用直接解剖法。最后提出了四点:a)三可分性概念与可构造性概念的区别;B) 900角的三切分是一种全新的、不同的方法;c) Bhaskara对毕达哥拉斯定理的第一个证明,它真正嵌入了900角的三切分和;d)另一种从900角的三切线推导勾股定理的方法。
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引用次数: 1
A Computer Vision Application for Measuring the Deflection in a Two-dimensional View of Reinforced Concrete Beams 钢筋混凝土梁二维变形测量的计算机视觉应用
Q4 Multidisciplinary Pub Date : 2021-05-28 DOI: 10.32871/RMRJ2109.01.02
A novel computer vision application is developed to measure the deflection of two-dimensional (2D) reinforced concrete structural members. Eight beam samples, with dimensions of 160 mm x 150 mm x 1400 mm are loaded and simulated under a four-point loading test until failure using a reaction framework machine. A camera is fixed at the center front view of the concrete beams to capture the deflection of the samples while testing. In each test, a dial indicator is installed and the maximum deflection is manually recorded. Based on the results, the maximum deflection values recorded by the proposed application obtained an average error of 18.38 % when compared to the manual measured results. This indicates that computer vision-based application can provide a beam-wide scale deflection performance, compared to the traditional point-based deflection reading. This study paves a new possibility of aiding manual measurements of concrete beams and all other structural studies.
开发了一种新的计算机视觉应用程序来测量二维钢筋混凝土结构构件的挠度。8个尺寸为160 mm x 150 mm x 1400 mm的梁样品在四点加载试验下加载和模拟,直到使用反应框架机失效。摄像机固定在混凝土梁的中心前视图,以便在测试时捕获样品的挠度。在每次测试中,安装一个刻度表,并手动记录最大挠度。根据结果,与人工测量结果相比,所提出的应用程序记录的最大挠度值的平均误差为18.38%。这表明,与传统的基于点的偏转读数相比,基于计算机视觉的应用可以提供波束范围的偏转性能。这项研究为帮助手工测量混凝土梁和所有其他结构研究铺平了新的可能性。
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引用次数: 0
Performance Evaluation of a Rice Hull-fueled Cabinet Food Dryer 稻壳燃料柜式食品干燥机的性能评价
Q4 Multidisciplinary Pub Date : 2021-05-28 DOI: 10.32871/RMRJ2109.01.03
This study was conducted to determine the technical performance of a rice hull-fueled cabinet food dryer. Data gathered from the drying performance in terms of drying behavior, drying rate, and dryer heat utilization efficiency using cassava chips was analyzed through an experimental design. The study also evaluated fuel consumption, thermal conversion efficiency, energy use efficiency, heat utilization efficiency, temperature distribution and economic performance. Results indicated that the dryer's average fuel consumption and the thermal conversion efficiency is 11.19 kg/hr and 6.17%. While the energy use efficiency is 41.51%, and the dryer efficiency is 11.79 %. The moisture reduction of the rice hull-fueled dryer is 8.156 kg/hr, and the heat utilization efficiency is 41.51%. The break-even of using the dryer is ₱ 4.988/kg; if rented out at ₱ 59.86/hr, the payback period is 0.988 batch/hr.
研究了以稻壳为燃料的柜式食品烘干机的技术性能。通过实验设计,分析了木薯片干燥性能、干燥速率和干燥机热利用率等方面的数据。该研究还评估了燃料消耗、热转换效率、能源利用效率、热利用效率、温度分布和经济性能。结果表明,该干燥机的平均燃油消耗和热转换效率分别为11.19 kg/hr和6.17%。能源利用效率为41.51%,烘干机效率为11.79%。稻壳燃料干燥机的减湿量为8.156 kg/hr,热利用效率为41.51%。使用烘干机的收支平衡为4.988元/公斤;以59.86元/小时的价格出租,投资回收期为0.988批/小时。
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引用次数: 2
期刊
Recoletos Multidisciplinary Research Journal
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