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A review of cyclic simple shear test on soils: challenges and new solutions 土壤循环单剪试验综述:挑战和新的解决方案
IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2022-12-02 DOI: 10.1007/s12572-022-00321-4
B. Madhusudhan
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引用次数: 0
The market potential and financial feasibility of cable car tourist attraction development in Pelaga, Bali, Indonesia 印尼巴厘岛佩拉加缆车旅游景点开发的市场潜力和财务可行性
IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2022-12-01 DOI: 10.11591/ijaas.v11.i4.pp373-382
I Gusti Bagus Rai Utama, Putu Chris Susanto, C. Trimurti, Ni Putu Dyah Krismawintari
The purpose of this work is to carry out consumer and investor behavior through a feasibility study of cable car tourist attractions in agritourism in Pelaga Village, Petang district, which focuses on studying marketing and financial perspective. This research uses observation and feasible study methods based on marketing theory, and investment financial management theory. It is highly likely by potential tourists as an attraction that can openly present natural beauty, as an environmentally-friendly tourist attraction, a unique tourist attraction in Bali, will provide public facilities, telecommunications, restaurants, and agro product market centers, proximity to the city center, availability of transportation to the location, easy access to locations, and community friendliness towards tourist arrivals. The economic aspect where analysis of market opportunities is based on estimated sales data for four types of services: cable cars, restaurants, UFO glass platform attraction, and under the park and agritourist. The findings of this study reinforce the method and theory that business-oriented development planning must go through a feasible study of at least two important aspects, namely aspects of market potential, and aspects of investment management which are expected to be profitable for investors.
本工作的目的是通过对佩塘区佩拉加村农业旅游中缆车旅游景点的可行性研究,研究消费者和投资者的行为,重点研究营销和财务角度。本研究以市场营销理论、投资财务管理理论为基础,采用观察法和可行性研究方法。作为一个可以公开展示自然美景的景点,作为一个环境友好的旅游景点,一个巴厘岛独特的旅游景点,它将提供公共设施,电信,餐馆和农产品市场中心,靠近市中心,可获得的交通工具,方便的到达地点,以及对游客的社区友好。经济方面的市场机会分析是基于四种类型服务的估计销售数据:缆车,餐馆,飞碟玻璃平台景点,公园和农业旅游。本研究的发现强化了以商业为导向的发展规划必须经过至少两个重要方面的可行性研究的方法和理论,即市场潜力方面和投资管理方面,预计将为投资者带来利润。
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引用次数: 0
Data-driven dictionaries to enhance the performance of compressive sensing-based state estimators 数据驱动字典提高基于压缩感知的状态估计器的性能
IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2022-12-01 DOI: 10.1007/s12572-022-00324-1
Rahul Madbhavi, Babji Srinivasan
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引用次数: 0
On prognosis of variation of properties of multilayer structure by preliminary processing of the substrate 衬底预处理对多层结构性能变化的预测
IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2022-12-01 DOI: 10.11591/ijaas.v11.i4.pp345-355
E. L. Pankratov
In this paper, we analyze the effect of the preliminary processing of substrate on the properties of the grown heterostructure. It has been shown that the growth of an epitaxial layer on a buffer layer after preliminary (before starting of growth) annealing makes it possible to decrease the value of mismatch-induced stress. An analytical approach has been introduced for the analysis of mass and heat transfer in a multilayer structure with account mismatch-induced stress.
本文分析了衬底预处理对异质结构生长性能的影响。结果表明,在初步(生长开始前)退火后在缓冲层上生长外延层可以降低错配引起的应力值。本文介绍了一种分析多层结构在考虑错配应力时的传质和传热的分析方法。
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引用次数: 0
The combined effect of zinc and honey to increase hemoglobin and albumin levels in white rats induced by low protein diet 锌和蜂蜜对低蛋白饮食诱导的大鼠血红蛋白和白蛋白水平升高的联合作用
IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2022-12-01 DOI: 10.11591/ijaas.v11.i4.pp296-305
Endang Sri Sunarsih, Yoga Adhi Dana, Charisha Mahda Kumala
Undernutrition is a type of malnutrition. Malnutrition can endanger human life, particularly that of children. Honey, which has a high nutritional value, is one of the components that can be utilized to alleviate malnutrition. Zinc tablets, in addition to honey, are thought to boost hemoglobin (Hb) and albumin levels. Zinc, as an antioxidant and catalyst for biochemical events, aids in organ healing, particularly by restoring the role of enzymes in the process of food metabolism in the body. This study was conducted as an experimental study with a pretest-posttest design and a control group. Thirty Wistar rats were randomly distributed into six groups of five rats. The average Hb and albumin levels in the group of rats differ significantly, both in the single treatment and the combination of normal rats and malnutrition control. The groups that were given zinc and honey once a day had the greatest rise in hemoglobin, which was 0.5 g/dl (3.10%). The groups who received zinc and honey twice a day had the greatest rise in albumin (1.99 g/dl) (163.11%).
营养不良是营养不良的一种。营养不良会危及人的生命,特别是儿童的生命。蜂蜜具有很高的营养价值,是可以用来缓解营养不良的成分之一。锌片,除了蜂蜜,被认为可以提高血红蛋白(Hb)和白蛋白水平。锌作为一种抗氧化剂和生化反应的催化剂,有助于器官愈合,特别是通过恢复体内食物代谢过程中酶的作用。本研究采用前测后测设计和对照组进行实验研究。30只Wistar大鼠随机分为6组,每组5只。在单独治疗和正常大鼠与营养不良对照组的联合治疗中,各组大鼠的平均Hb和白蛋白水平均有显著差异。每天给予一次锌和蜂蜜的组血红蛋白升高幅度最大,为0.5 g/dl(3.10%)。每天服用两次锌和蜂蜜的组白蛋白增加最多(1.99 g/dl)(163.11%)。
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引用次数: 0
Adaptive fuzzy sliding mode controller for a single-stage inverted pendulum 单级倒立摆的自适应模糊滑模控制
IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2022-12-01 DOI: 10.11591/ijaas.v11.i4.pp324-334
S. Suprapto, M. Zakarijah, Muslikhin Muslikhin
Sliding mode controller (SMC) has become a popular traditional control method in industries due to the most effective control strategies employing nonlinear control and the ability to reject disturbances, particularly for line trajectory control. However, this control method has chattering problems due to high-frequency switching. To cope with the shortcoming, an artificial intelligence (AI) method is utilized in the traditional SMC to eliminate or reduce this chattering problem. This paper investigates an adaptive fuzzy logic system combined with SMC algorithm to alleviate the problem. Fuzzy logic is chosen due to its advantages in tackling nonlinear properties using if-then thinking, whereas SMC method can be applied due to its ability to reject disturbance control. The inverted pendulum is selected as a controlled object and simulated using MATLAB/Simulink to investigate this control method. By combining the fuzzy logic system and the SMC approach, the chattering problems can be adaptively reduced on the line trajectory tracking signal. The adaptive fuzzy SMC achieved better performance with fast response compared with previous literature algorithms for similar plants.
滑模控制器(SMC)已成为一种流行的传统控制方法在工业中,由于最有效的控制策略采用非线性控制和抗干扰能力,特别是对于直线轨迹控制。然而,这种控制方法由于高频开关而存在抖振问题。针对这一缺点,传统的SMC采用人工智能方法来消除或减少抖振问题。本文研究了一种结合SMC算法的自适应模糊逻辑系统来解决这一问题。选择模糊逻辑是因为它在使用if-then思维处理非线性特性方面具有优势,而SMC方法则是因为它具有抑制干扰控制的能力。选择倒立摆作为被控对象,利用MATLAB/Simulink对该控制方法进行仿真研究。将模糊逻辑系统与SMC方法相结合,可以自适应地减小线路轨迹跟踪信号的抖振问题。与已有文献中类似对象的自适应模糊SMC算法相比,该算法具有更好的性能和更快的响应速度。
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引用次数: 1
Seismic fragility analysis of a two bay two storey underground metro station: a case study 两湾两层地下地铁站的地震易损性分析——以实例为例
IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2022-12-01 DOI: 10.1007/s12572-022-00323-2
Vikram Gadicherla, Dodagoudar R. Goudappa, Meher Prasad Anumolu
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引用次数: 1
An overview of the potential of Citrus hystrix (kaffir lime) essential oil as mosquito repellent 柑桔精油驱蚊潜力综述
IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2022-12-01 DOI: 10.11591/ijaas.v11.i4.pp360-366
N. A. Md Zaki, J. Jai, Izzat Syahmi Kamal Shahrizan, D. S. Fardhyanti, M. Megawati, N. A. Imani
A chemical-based insect repellent such as N, N-diethyl-3-methylbenzamide (DEET) is commonly used against all insects despite its toxicity in humans. Hence, a repellent agent from natural sources of plant essential oil was introduced. Some of the plants which have the repellent potential are catnip, hairy basil, citronella, vetiver, clove, and citrus. Citronellal, citronellol, geraniol, eugenol, eugenol-acetate, and beta-caryophyllene are among the repellent active components in these plants. Citrus hystrix (kaffir lime) was known for several applications in food, health, and skincare, but its potential as mosquito repellent is still new. This overview paper highlights the potential of kaffir lime essential oil as a mosquito repellent and the encapsulation of essential oil related to mosquito repellent. Several studies on kaffir lime essential oil as mosquito repellent was conducted and revealed that the major repellent active components are citronellol and limonene. Pure kaffir lime essential oil provides one-hour repellent protection against the mosquito. However, an addition of 5% vanillin prolongs the protection time to three hours. Essential oil is easily vaporized at room temperature which shortens its effectiveness time. Encapsulation of the essential oil would control the vaporization process and hence prolong its efficiency. Nonetheless, almost no research work reported on the encapsulation of kaffir lime essential oil and the release mechanism of the encapsulated kaffir lime.
一种化学驱蚊剂,如N, N-二乙基-3-甲基苄胺(避蚊胺),尽管对人体有毒,但通常用于对付所有昆虫。因此,介绍了一种天然植物精油驱避剂。一些具有驱避潜力的植物是猫薄荷,毛罗勒,香茅,香根草,丁香和柑橘。香茅醛、香茅醇、香叶醇、丁香酚、丁香酚-乙酸酯和-石竹烯是这些植物的驱避活性成分。众所周知,柑橘酸橙在食品、保健和护肤方面有多种应用,但它作为驱蚊剂的潜力仍然是新的。本文综述了青柠精油作为驱蚊剂的潜力,以及与驱蚊剂相关的精油的包封。对青柠精油驱蚊效果进行了研究,发现其主要驱蚊活性成分为香茅醛和柠檬烯。纯卡菲莱姆精油提供一个小时的驱蚊保护。然而,添加5%香兰素可将保护时间延长至3小时。精油在室温下容易蒸发,缩短了其有效时间。精油的包封可以控制蒸发过程,从而延长其效率。然而,关于石灰精油的包封及包封后石灰的释放机制的研究工作几乎没有报道。
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引用次数: 1
A numerical simulation of PM2.5 concentration using the WRF-Chem model during a high air pollution episode in 2019 in Jakarta, Indonesia 2019年印度尼西亚雅加达高空气污染期间,使用WRF-Chem模型对PM2.5浓度进行了数值模拟
IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2022-12-01 DOI: 10.11591/ijaas.v11.i4.pp335-344
R. H. Virgianto, Rayhan Rivaniputra, Nanda Putri Kinanti, Agung Hari Saputra, A. Khoir
Jakarta, as a megapolitan city, is always crowded with thousands of vehicles every day which results in decreased air quality due to combustion emissions and may have a significant impact on human health. Particulate matter (PM2.5) is a pollutant that has an aerodynamic diameter of fewer than 2.5 micrometers and very easy to enter the human respiratory system so it can affect health. In the dry season, rain as the main natural mechanism for reducing PM2.5 occurs very rarely, causing an accumulation of PM2.5 concentrations in the atmosphere. The weather research and forecasting model coupled with chemistry (WRF-Chem) model is a dynamic model that works with atmospheric chemistry combined with meteorological variables simultaneously. This study aims to simulate the concentration of PM2.5 in Jakarta during the high air pollution episode from 20 to 29 June 2019 with the WRF-Chem model based on the T1-MOZCART chemical scheme. Spatial analysis was conducted to determine the distribution of PM2.5 concentrations during high air pollution episodes in Jakarta. Validation of the simulation model was based on three observation sites, one in South Jakarta and two in Central Jakarta. The results showed that the highest correlation is 0.3 and the lowest root mean square error (RMSE) is 26.4, while the simulations still tend to overestimate the PM2.5 concentration.
雅加达作为一个大都市,每天总是挤满成千上万的车辆,由于燃烧排放导致空气质量下降,并可能对人类健康产生重大影响。颗粒物(PM2.5)是一种空气动力学直径小于2.5微米的污染物,很容易进入人体呼吸系统,从而影响健康。在旱季,降雨作为减少PM2.5的主要自然机制很少发生,导致大气中PM2.5浓度的积累。化学耦合气象研究预报模式(WRF-Chem)是一种大气化学与气象变量同时作用的动态模式。本研究旨在利用基于T1-MOZCART化学方案的WRF-Chem模型,模拟2019年6月20日至29日雅加达高空气污染期间的PM2.5浓度。通过空间分析确定雅加达高污染期间PM2.5浓度的分布。模拟模式的验证基于三个观测点,一个在雅加达南部,两个在雅加达中部。结果表明,模拟结果的相关系数最高为0.3,均方根误差(RMSE)最低为26.4,但仍存在高估PM2.5浓度的倾向。
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引用次数: 3
Sono-hydrolysis of banana stem midrib using HY-zeolite from natural sand-based silica as a catalyst 以天然砂基二氧化硅hy -沸石为催化剂对香蕉茎中脉进行声波水解
IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY Pub Date : 2022-12-01 DOI: 10.11591/ijaas.v11.i4.pp306-311
S. Sumari, A. Santoso, Muhammad Roy Asrori, Yana Fajar Prakasa, Dinar Rachmadika Baharintasari
Banana stem midrib has potential as glucose source through catalytic hydrolysis assisted by ultrasonic (sono-hydrolysis). Besides, natural sand-based silica is potential as raw material for zeolite synthesis. The purpose of the study was to do two things: i) characterize HY-zeolite made from natural sand-based silica and ii) determine whether or not HY-zeolite is effective for sono-hydrolysis of banana stem midrib. There was a total of four processes that were carried out, including i) the extraction of silica, ii) the synthesis of HY zeolite, iii) the hydrolysis process, and iv) the glucose content test. The results of the study were gain two things: i) The findings of X-ray florescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM), and fourier transform infrared (FTIR) on HY-zeolite are 2.3 Si/Al, obtained 2 theta and d-spacing data similarities for HY-zeolite, and formed T-O-T, O-T-O (T = Si/Al), and Si-OH groups respectively; and ii) HY-zeolite with ultrasonic was effective for hydrolyzing cellulose into glucose at maximum temperature and time, 55 °C and 6 hours.
通过超声催化水解,香蕉茎中脉具有作为葡萄糖源的潜力。此外,天然砂基二氧化硅有潜力作为合成沸石的原料。本研究的目的是做两件事:1)表征由天然砂基二氧化硅制成的hy -沸石;2)确定hy -沸石对香蕉茎中脉的超声水解是否有效。共进行了四个过程,包括i)二氧化硅的提取,ii) HY沸石的合成,iii)水解过程,iv)葡萄糖含量测试。研究结果有两点:i) hy -沸石的x射线荧光(XRF)、x射线衍射(XRD)、扫描电镜(SEM)和傅里叶变换红外(FTIR)结果为2.3 Si/Al,得到了hy -沸石的2个θ和d间距数据相似性,分别形成了T- o -T、O-T-O (T = Si/Al)和Si- oh基团;超声波hy -沸石在最高温度和时间(55℃,6 h)下水解纤维素为葡萄糖效果最好。
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引用次数: 0
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International Journal of Advances in Engineering Sciences and Applied Mathematics
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