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On the Use of Contactless Vibration to Improve the Welding Quality 利用无接触振动提高焊接质量的研究
Q4 Mathematics Pub Date : 2023-09-05 DOI: 10.17758/heaig14.h0923106
Mohamad Salimi, A. Teyeb, Evelyne El Masri, Samiul Hoque, Phil Carr, Wamadeva Balachandran, Tat-Hean Gan
: This paper investigates the use of contactless power ultrasonic excitation to decrease the electrical impedance of the weld in laser welding. The literature extensively documents the impact of employing contact power ultrasonic excitation on the microstructure morphology and refinement of grain in the weld. This study involves characterising an industrial High Power Ultrasound Transducer (HPUT) by determining the optimal distance and angle for contactless excitation of the fusion zone in the weld, aiming to achieve the maximum amplitude. Subsequently, the transducer is integrated into the laser welding system, resulting in the creation of an ultra-sonic-assisted welding system. To find the improvement due to the contactless vibration assistance, the welding area was characterised by an impedance ohmmeter device. The results indicate an approximately 6 % improvement in the welding quality in terms of the impedance value, an important parameter for battery pack welding. In response to the issue of overheating in the industrial transducer during prolonged welding operations, an alternative transducer was proposed to overcome this challenge. Further investigations are carried out by the alternative transducer to find the effect of different wave types, namely, shear and compressional waves, on the welding quality. The contact vibration can excite the plate approximately 50 times higher in acceleration amplitude than contactless excitation. Nevertheless, enhancements of 10% and 6% are observed in the impedance value when utilising compressional and shear waves, respectively, as compared to the results obtained with contactless vibration.
本文研究了在激光焊接中采用非接触功率超声激励降低焊缝电阻抗的方法。文献广泛地记录了采用接触功率超声激励对焊缝组织形貌和晶粒细化的影响。本研究通过确定焊缝中熔合区的非接触激励的最佳距离和角度来表征工业高功率超声换能器(HPUT),旨在实现最大振幅。随后,将换能器集成到激光焊接系统中,从而创建了超声波辅助焊接系统。为了找出由于无接触振动辅助所带来的改善,用阻抗欧姆计装置对焊接区域进行了表征。结果表明,在阻抗值方面,焊接质量提高了约6%,阻抗值是电池组焊接的重要参数。针对工业换能器在长时间焊接过程中出现的过热问题,提出了一种替代换能器来克服这一挑战。采用替代换能器进行了进一步的研究,以找出不同类型的波,即横波和纵波,对焊接质量的影响。与非接触激振相比,接触激振能产生约50倍的加速度幅值。然而,与非接触式振动相比,在使用纵波和横波时,阻抗值分别提高了10%和6%。
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引用次数: 0
The Mediating Role of Brand Image in The Relationship Between Service Quality and Customer Loyalty in The Hotel Industry of Aqaba /Jordan 品牌形象在亚喀巴/约旦酒店业服务质量与顾客忠诚关系中的中介作用
Q4 Mathematics Pub Date : 2023-09-05 DOI: 10.17758/heaig14.h0923505
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引用次数: 0
Clinical Decision Supporting Algorithm for Screening COVID-19 Using Exhaled Breath 呼气筛查COVID-19的临床决策支持算法
Q4 Mathematics Pub Date : 2023-09-05 DOI: 10.17758/heaig14.h0923110
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引用次数: 0
Carbon Dioxide Waveform Features During Pre and Post Treatment Asthmatic Patient in Emergency Department 急诊科哮喘患者治疗前后二氧化碳波形特征
Q4 Mathematics Pub Date : 2023-09-05 DOI: 10.17758/heaig14.h0923108
Tjokorda Gde, Tirta Nindhia, M. B. Malarvili, Thalitakum Hutajulu, Nabiel Rafa Angel, Bhaswara, Ni Made Ary, E. D. Wirastuti
: Capnography, measured respired carbon dioxide in human respiration, is showing promising use in various areas of medicine, including monitoring of airway patency, quality of CPR efforts, and as indicators of abnormal gas exchange. The quantitative characterization of the carbon dioxide (CO 2 ) waveforms has potentially been shown to indicate changes in respiratory airflow, which may be clinical use in discriminating asthmatic severity. The potential clinical application must be evaluated by identifying CO 2 waveform indices which change significantly during an acute asthmatic attack . Hence, we aim to assess the CO 2 waveform indices (Area and Slope), extracted computationally from three different regions, upward expiratory (4-10 mmHg and 11-15 mmHg) and alveolar phase during pre-and post-treatment using newly developed human respiration, carbon dioxide (CO 2 ) measurement device. We recruited 23 asthmatic patients via convenience sampling method. A signal processing algorithm was applied for automatic segmentation and feature computations, and a paired sample t-test, and Box-whisker plot was performed to know the significant difference of features during the pre-and -post intervention. We found that both the parameters (Area and Slope) were most notable for lower part of expiratory phase (4-10 mmHg, p<0.05), followed by the alveolar period (p<0.05), while upper part of upward expiratory phase (11-15 mmHg) was insignificant for Area (p > 0.05) and significant for slope (p < 0.05). Thus, the inclusion of the features above into the lately developed device may have the potential for the assessment of respiratory distress conditions like asthma in and out of clinical settings as a patient-independent method.
二氧化碳造影是一种测量人体呼吸过程中呼出的二氧化碳的技术,它在医学的各个领域都显示出很好的应用前景,包括监测气道通畅、心肺复苏术的质量以及作为异常气体交换的指标。二氧化碳(co2)波形的定量表征已被潜在地证明可以指示呼吸气流的变化,这可能在临床上用于区分哮喘的严重程度。必须通过识别急性哮喘发作期间显著变化的co2波形指标来评估其潜在的临床应用。因此,我们的目标是评估CO 2波形指数(面积和斜率),从三个不同的区域,向上呼气(4-10毫米汞柱和11-15毫米汞柱)和肺泡期计算提取预处理和后处理期间使用新开发的人体呼吸,二氧化碳(CO 2)测量装置。采用方便抽样的方法,我们招募了23例哮喘患者。采用信号处理算法进行自动分割和特征计算,并采用配对样本t检验和盒须图来了解干预前后特征的显著性差异。我们发现两个参数(面积和斜率)在呼气期下部(4-10 mmHg, p 0.05)最显著,斜率(p < 0.05)显著。因此,将上述特征纳入最新开发的设备中,可能有可能作为一种独立于患者的方法,在临床环境内外评估呼吸窘迫状况,如哮喘。
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引用次数: 0
Data Ownership Does Not Work? 数据所有权不起作用?
Q4 Mathematics Pub Date : 2023-09-05 DOI: 10.17758/heaig14.h0923504
Aizhan Abdrassulova
: The search for the most effective data governance model has become an urgent issue all over the world, including the European Union. The need for compliance with privacy rights, at the same time reasonable openness of data, pose a difficult task for policy-makers. This article discusses data ownership as one of the previously much discussed potential data governance model. The article gives the reasons why the hopes of effective functioning were placed on this approach, as well as an explanation of why these expectations were not met. The rejection of the concept of data ownership led to the search for other data governance models, some of them are proposed in the third section of this article. To date, the European Union adheres to alternative data governance options, which are also mentioned in this paper.
寻找最有效的数据治理模式已成为包括欧盟在内的世界各国迫切需要解决的问题。既要保障隐私权,又要合理公开数据,这对政策制定者来说是一项艰巨的任务。本文将数据所有权作为之前讨论过的潜在数据治理模型之一进行讨论。这篇文章给出了为什么人们把有效运作的希望寄托在这种方法上的原因,并解释了为什么这些期望没有得到满足。对数据所有权概念的拒绝导致了对其他数据治理模型的探索,其中一些模型将在本文的第三部分中提出。迄今为止,欧盟坚持采用可选的数据治理方案,本文也提到了这一点。
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引用次数: 0
Accumulation of Polyphenols and Flavonoids in Tobacco Plant (Nicotiana Tabacum) Grown in Heavy Metal Applied Soil 重金属土壤中烟草多酚和黄酮类化合物的积累
Q4 Mathematics Pub Date : 2023-09-05 DOI: 10.17758/heaig14.h0923218
B. Topçuoğlu
: In the greenhouse experiment tobacco plants were treated with heavy metals (Zn, Cu, Ni, Pb and Cd) to estimate changes of polyphenols and flavonoids levels. Increasing levels of heavy metals (till to ten fold of soil limit values of metals) were applied experimental soil have increased heavy metal contents of plant. In particular, tobacco plant has absorbed Ni and Cd metals at relatively high levels. Dry matter amounts of plant were not changed by treatments. Tobacco plant grown in soil treated with high levels of heavy metals in the experiment produced a high biomass in the short vegetation period and did not show phytotoxicity even at the highest metal levels. Heavy metals applied to the soil increased the total polyphenols and flavonoid amounts in the tobacco plant. Increase in the polyphenol and flavonoid content of tobaco was more pronounced in the Ni, Pb and Cd metal applications. Research findings showed that tobacco plant is well adapted to heavy metal stress conditions with high phenolic substance production.
在温室试验中,采用重金属(Zn、Cu、Ni、Pb和Cd)处理烟草植株,观察其多酚和类黄酮含量的变化。试验土壤中重金属含量增加(达到土壤重金属极限值的10倍),植物重金属含量增加。特别是烟草植株对镍、镉金属的吸收量较高。不同处理对植株干物质含量无显著影响。在高重金属处理土壤中生长的烟草植株在短的植被期内产生了较高的生物量,即使在最高重金属水平下也未表现出植物毒性。土壤重金属处理增加了烟草植株中总多酚和类黄酮含量。在镍、铅、镉金属处理中,烟草多酚和类黄酮含量的增加更为明显。研究结果表明,烟草植物对重金属胁迫具有较好的适应性,酚类物质产量较高。
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引用次数: 0
Designating Preference Starting Point of Heritage Trail within Heritage City of Parakan, Central Java, Indonesia Using Fuzzy Logic Approach 用模糊逻辑方法确定印尼中爪哇省帕拉干遗产城内遗产步道的优先起点
Q4 Mathematics Pub Date : 2023-09-05 DOI: 10.17758/heaig14.h0923415
S. Bahri, A. W. Purwantiasning
: This research is a part of multi-year research, which was started last year by conducting some studies, either literature or simulation, for the fuzzy logic approach used as a decision maker. In supporting the primary research of designing a heritage trail within a heritage city, particularly the heritage city of Parakan, Central Java, Indonesia, this research was also delivering the analysis of preferences through the community to designate the appropriate and preferred starting point for the trail within the historical area of the Heritage City of Parakan. By using fuzzy logic, this research has analyzed the relevant starting point of the trail within the historical area of a Heritage City of Parakan. It has been proposed, together with another study result, to be a good design. Thus, this research has completed some of the basic principles of the fuzzy logic approach to decide the appropriate and preferred starting point of the trail within the historical area of Parakan.
这项研究是多年研究的一部分,该研究于去年开始,通过对模糊逻辑方法作为决策者进行一些研究,无论是文献还是模拟。为了支持在遗产城市中设计遗产步道的初步研究,特别是在印度尼西亚中爪哇的帕拉干遗产城市中,这项研究还通过社区提供了偏好分析,以指定帕拉干遗产城市历史区域内合适和首选的路径起点。本研究运用模糊逻辑,分析了巴拉干遗产城市历史区域内步道的相关起点。并结合另一项研究结果,提出了这是一个很好的设计。因此,本研究完成了模糊逻辑方法的一些基本原则,以确定Parakan历史区域内合适和首选的小径起点。
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引用次数: 0
Political Hegemony and eDomination in the Age of ICTs 信息通信技术时代的政治霸权与统治
Q4 Mathematics Pub Date : 2023-09-05 DOI: 10.17758/heaig14.h0923417
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引用次数: 0
Analysis of Intrinsic Motivation Influence on Employee Affective Commitment During Digital Change 数字化变革中内在动机对员工情感承诺的影响分析
Q4 Mathematics Pub Date : 2023-09-05 DOI: 10.17758/heaig14.h0923501
Yashar Ibragimov, Nino Berishvili Berishvili
Technological, economic and other innovation-related advances of the 21st century have influenced the old, traditional business models.  Presently, organizational change has become an integral part of corporate strategy for the majority of businesses. Such shifts have resulted in both new challenges and opportunities. The expansion of the use of information and communication technologies has driven fundamental shifts towards digital change. Organizations are being forced to revise processes, goals and overall mission in order to stay competitive in the marketplace. However, the implementation of digital transformation brings uncertainty, causes stress and raises concerns about future jobs. The study employs a literature review to fill the gap in understanding the relationship between employee intrinsic motivation and affective commitment during the transformation. A conceptual model proposes the antecedents of employee motivation (Organizational Citizenship Behavior and Leader Member Exchange) and investigates its impact on employee commitment to change.  The utilized model elucidates how to maintain employee intrinsic motivation and affective commitment in the context of organizational transformation and sets the ground for future research.
21世纪的技术、经济和其他与创新相关的进步影响了旧的、传统的商业模式。目前,组织变革已经成为大多数企业战略的一个组成部分。这种变化带来了新的挑战和机遇。信息和通信技术使用的扩大推动了向数字化变革的根本性转变。为了在市场上保持竞争力,组织被迫修改流程、目标和总体使命。然而,数字化转型的实施带来了不确定性,带来了压力,并引发了对未来工作的担忧。本研究采用文献回顾的方法,填补了对转型过程中员工内在动机与情感承诺关系理解的空白。一个概念模型提出了员工动机的前因(组织公民行为和领导成员交换),并研究了其对员工变革承诺的影响。运用的模型阐明了在组织转型背景下如何保持员工的内在动机和情感承诺,为未来的研究奠定了基础。
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引用次数: 0
Evaluation of The Chemical Characteristics with Time in Marine Wells in Kuwait 科威特海洋油井化学特性随时间的评价
Q4 Mathematics Pub Date : 2023-09-05 DOI: 10.17758/heaig14.h0923215
Yousef Alenezi
: Nabkha is a geomorphology phenomenon that represents accumulations of sand by the wind around the plant and spread in the north of Kuwait Bay and in the coastal part of the Sabah Al-Ahmad Natural Resort in Jal -alzour. Nabkha is the largest coastal plant in Kuwait around Nitraria Retusa has been observed that these plants vary in their ability to grow and live in the Sabkha area. Two wells were drilled on the top of the group of Nabkha, and the second was at the level of Sabkha through a scientific project earlier. these well were monitored and analysed for PH and the total dissolved solids (TDS). The aim of this study was to evaluate the characteristics of acidity and chemical characteristics with the time of water samples in wells. The analysis of two wells, Sabkha and Nabkha, in northern Kuwait Bay were compared with the results of studies that have taken place around the plant in the years from 2005 to 2007. The study concludes there is variation in total dissolved solids in the Nabkha and Sabkha wells due to the nature of the plant (Nitraria retusa), which increases the lens underground to collect the water during the flood and rain seasons to use it during the drought period.
Nabkha是一种地形学现象,它代表了风在植物周围积聚的沙子,并在科威特湾北部和Jal -alzour的Sabah Al-Ahmad自然度假村的沿海地区蔓延。Nabkha是科威特最大的沿海植物,据观察,这些植物在Sabkha地区的生长和生活能力各不相同。在Nabkha组的顶部钻了两口井,第二口井是通过早期的一个科学项目在Sabkha层钻的。对这些井进行了PH和总溶解固形物(TDS)的监测和分析。本研究的目的是评价井水样品的酸度特征和化学特征随时间的变化。对科威特湾北部Sabkha和Nabkha两口井的分析与2005年至2007年在该工厂周围进行的研究结果进行了比较。该研究得出结论,由于植物(Nitraria retusa)的性质,Nabkha和Sabkha井中的总溶解固体存在差异,它们增加了地下的透镜,以便在洪水和雨季收集水,以便在干旱期间使用。
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引用次数: 0
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Journal of Computational Technologies
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