Miracle-dz/UniFAR-FTUs huggingface dataset:
Conceptual design and assessment of a profiled Fresnel lens daylight collector

This paper describes design of daylight collectors using multiple Fresnel lenses, each facing the sun for a particular period of time in a day. The influence of solar movement on flat Fresnel lens was studied. The influence of groove density of the lens was also determined by which the suitable Fresnel lens was selected. Passive and profiled north-facing and south-facing collectors with multi-lens system have been designed based on the solar altitude and azimuth angle of a geographical location. Performance of the north- and south-facing collector at different times of a day with an acrylic dome indicated better efficiency and uniformity of lighting throughout the day time for the proposed profiled Fresnel collectors.
Advanced micro air-cooling systems for high density packaging

Future 3D electronics packaging systems will require micro cooling systems that can be integrated and permit the continued use of air as a coolant. To achieve this, new types of silicon micro heat exchangers were made using an anisotropic etching process. Various heat exchanger configurations and sizes were made using sandwich and stacking techniques. They can be used either as a heat exchanger for direct cooling with compressed air or as a heat pipe and thermosyphon for indirect cooling with fan-blown air. The performance characteristics of the various cooling systems are stated. The micro-heat-pipe can be used for power loss densities of up to 3 W/cm/sup 2/, the direct air cooling up to 15 W/cm/sup 2/ and the thermosyphon up to 25 W/cm/sup 2/. Cooling performances are achieved that are otherwise only possible with liquid cooling. The practical application of the micro cooling system is demonstrated using the example of the Pentium processor. With a power loss of 15 W, the micro cooling system is able to limit the increase in operating temperature to 15 K. The volume of the micro heat exchanger is 2.5 cm/sup 3/ and therefore considerably smaller than that of standard heat sinks. <<ETX>>
Parachute flying physical model and inflation simulation analysis

By means of establishing parachute’s flying physical model, four methods (i.e. tiny segment analysis method, inflating distance method, moment method and simulating canopy shape method) are adopted to analyze and calculate the variations of canopy shape and the parameters of parachute inflation. The results are simply analyzed, and the figures of all the results are compared.
Returning to the Body: Somatic Sensing in Multi-Person Virtual Reality Technology

This article uses a dance-somatic standpoint to explore the complexities of body-technology relations across the virtuality and corporeality of bodies and environments using multi-person Virtual Reality technology (VR). Immersion into a virtual environment (VE) using VR can lead to a sense of presence, of ‘being there’. Dancers move attending to a field of sensation which is felt and tactile, undertaking somatic and sensory practices to de-centre vision so to foreground and thus activate non-visual and somatic senses. From this dancerly standpoint, entering into a VE brings into play the immediate effect of a perceptual tension or ‘gap’ between the visual, virtual environment and the physical, felt environment. Technologists and artists engaging with VR typically find ways to cover-over this perception gap in order to create a reality that is fluidly and synchronously experienced by the participant. This article introduces and discusses two participatory performance projects Figuring (2018) and Soma (2020) which challenge this approach. Drawing on participant responses to Figuring, and the creative development of Soma, the article presents and discusses six themes which unpack and challenge normative notions and expectations around VR technology and how bodies sensorially engage with the technology; and discusses an ‘ethics of care’ which calls for somatic activation and participatory agency in human encounters with technology. Throughout, the article offers a commentary on the tensions between a thematic research approach and an intuitive, practice-led approach in the analysis of participant testimonies and in the creative processes of performance-making.
Structural Damage Detection Using Inner Product Vector and Low Pass Filter Technique

The inner product vector (IPV) was proposed in our previous research as a damage detection algorithm which uses cross correlation functions between vibration responses under band pass white noise excitation. It was verified that the IPV of a structure is a weighted summation of the mode shapes of the structure and the weighing factors for each modes are different. Structural damage detection examples in our previous research shown that the damage location can be correctly detected if the bandwidth of the band pass white noise excitation only covers the fundamental natural frequency of the structure. However, the bandwidth of the band pass white noise excitation may cover first several natural frequencies of the structure in practice. This paper just investigates the damage detection method using IPV under the situation when the bandwidth of the band pass white noise excitation may cover first several natural frequencies of the structure, i.e. the hybrid method using IPV and low pass filter technique. Firstly, the theory of IPVs and the damage detection method using IPV are reviewed shortly. Then, the hybrid method using IPV and low pass filter technique is introduced. Finally, experimental damage detection example of a shear frame structure is presented to illustrate the method proposed in this paper.
Analisa Metode Webqual 4.0 dan Importance-Performance Analysis (IPA) Pada Kualitas Situs Detik.com

Penelitian ini bertujuan untuk menganalisis apakah situs web Detik.com sudah sesuai dengan kaidah penyajian situs web yang baik dan benar dan melakukan evaluasi untuk mengukur dan meningkatkan serta memperbaiki kualitas layanannya yang masih kurang. Metode yang digunakan adalah metode webqual 4.0 dan Importance-Performance Analysis (IPA). Hasil dari perhitungan rata-rata nilai kesenjangan (GAP) pada website Detik.com menunjukkan hasil negatif (<0) yaitu sebesar -0,04, dari hasil tersebut menunjukkan bahwa tingkat kinerja website Detik.com masih kurang dan belum memenuhi harapan pengguna. Dan hasil dari kuadran IPA didapati bahwa 1 atribut yang masuk kedalam kuadran I, 10 atribut pada kuadran II, 7 atribut pada kuadran III, dan 4 atribut masuk ke dalam kuadran IV. Penelitian ini diharapkan dapat memberikan masukan kepada pihak Detik.com khususnya pihak yang mengelola website Detik.com serta bisa dijadikan sebagai bahan evaluasi dalam meningkatkan dan mempertahankan kualitas layanannya serta dapat memberikan pelayanan yang memuaskan kepada pengguna layanan atau pengunjung website. Kata Kunci: Kualitas Layanan, Website Detik.com, Webqual 4.0, Importance-Performance Analysis (IPA) Abstract This study aims to analyze whether the website Detik.com is in accordance with the rules of the presentation of a good and correct website and conduct evaluations to measure and improve and improve the quality of services that are still lacking. The method used is the Webqual 4.0 method and Importance-Performance Analysis (IPA). The results of the calculation of the average gap value (GAP) on the website Detik.com showed negative results (<0) in the amount of -0.04, from these results indicate that the level of performance of the Detik.com website is still lacking and does not meet user expectations. And the results of the IPA quadrant found that 1 attribute entered into quadrant I, 10 attributes in quadrant II, 7 attributes in quadrant III, and 4 attributes entered into quadrant IV. This research is expected to provide input to Detik.com, especially those who manage the Detik.com website and can be used as an evaluation material in improving and maintaining the quality of its services and can provide satisfying services to service users or website visitors. Keywords: Service Quality, Website Detik.com, Webqual 4.0, Importance-Performance Analysis (IPA)
Monomeric CRP Aggravates Myocardial Injury After Myocardial Infarction by Polarizing the Macrophage to Pro-Inflammatory Phenotype Through JNK Signaling Pathway

Objective A polarized macrophage response plays a critical role in the pathophysiological process of myocardial infarction (MI). Several studies have shown a pro-inflammatory role for monomeric C-reactive protein (mCRP) in cardiovascular disease. However, the mechanism of how mCRP regulates macrophage phenotype switching remains unknown. In the present study, the effect of mCRP on macrophage polarization and its pathological function in myocardial repair after myocardial infarction was investigated. Methods MI was induced by permanent ligation of the left anterior descending coronary artery in ICR mice. Adult mice were injected with mCRP (2.5 mg/kg) with or without SP600125 (15 mg/kg, JNK inhibitor) 45 min before MI. The cardiac function, scar size as well as cardiac fibrosis, infiltration of inflammatory cells, and the level of proteins in the JNK signaling pathway in infarcted myocardium were assessed. In addition, the phenotypic characterization of macrophages was further measured by ELISA, flow cytometry and quantitative RT-PCR in cultured THP-1 cells or peritoneal macrophages. Results Cardiac function deterioration, ventricular dilatation and fibrosis were exacerbated in mice pretreatment with mCRP following MI. Meanwhile, an increased accumulation of infiltrated inflammatory cells in infarcted myocardium was observed in the mCRP group. Moreover, activation of the JNK signaling pathway was markedly elevated in mCRP treated animals post-MI. In contrast, pharmacological inhibition of JNK phosphorylation activity by SP600125 muted the detrimental effects of mCRP in MI mice. Furthermore, in vitro and in vivo co-culture experiments showed that mCRP shifted macrophage polarization towards pro-inflammatory phenotypes, and this polarization could be abolished by sp600125. Conclusion Taken together, our results imply that mCRP impairs myocardial repair after myocardial infarction by polarizing the macrophages into the pro-inflammatory M1 phenotype via the JNK-dependent pathway.
Structural, functional and molecular pathogenesis of pelvic organ prolapse in patient and Loxl1 deficient mice

Pelvic organ prolapse is a worldwide health problem to elderly women. Understanding its pathogenesis and an ideal animal model are crucial to developing promising treatments. The present study aimed to investigate new clinical significance and detailed mechanism of pelvic organ prolapse by comparing the structural, functional and molecular dysfunctions of pelvic organ prolapse in patient and Loxl1 deficient mice. Our results showed that human vagina tissues from prolapsed site showed disarranged collagen and elastic fibers compared with the non-prolapse tissue. A gene ontology (GO) analysis of differentially expressed genes revealed molecular changes mainly related to inflammatory response and extracellular matrix (ECM) organization. While the mice lacking Loxl1 developed stable POP phenotype and disordered ECM structure in histology. Such Loxl1 knockout mice exhibited a significantly urinary dysfunction and decreased mechanical properties of the pelvic floor tissues, implying that POP in human condition might be induced by progressively decreased mechanics of pelvic tissues following ECM catabolism. Similarly, we not only identified significant up-regulated ECM catabolism processes and down-regulated ECM synthesis processes, but also characterized high level of inflammatory response in vagina tissue of the Loxl1 deficient mice. Thus, all these pathological changes in the POP mice model was consistent with those of the clinical elderly patients. These findings provide new insight into remodeling of POP by LOXL1 regulation and be of great importance to develop combination treatments of ECM metabolism and inflammation regulation strategy.
Immunoreactivity against Dermatophagoides pteronyssinus Assessed by the Leukocyte Adherence Inhibition Test in Patients with Intrinsic Atopic Dermatitis and Correlated “Intrinsic” Non–IgE-mediated Allergic Conditions

Background: Due to the lack of standardized laboratory procedures able to demonstrate specific immune responses against the culprit allergens, the non—IgE-mediated allergy syndromes are a group of conditions diagnosed mostly by clinical examination and exclusion criteria. Objective: To evaluate the opportunity of the Leukocyte Adherence Inhibition Test (LAIT) to discriminate specific immunoreactivity against Dermatophagoides pteronyssinus (Dp) in a group of patients with non–IgE-mediated chronic allergic conditions. Methods: Ex vivo challenge tests performed with Dp were monitored by LAIT in patients presenting diverse non–IgE-mediated allergic conditions: intrinsic Atopic Dermatitis (iAD), intrinsic Allergic Rhinitis (iAR), intrinsic Ocular Allergy (iOA), intrinsic Chronic Pharyngitis (iCP), and intrinsic Asthma (iAS). Results: The mean LAI of the control group was 7%; the mean LAI of the iAR group was 34%; the mean LAI of the iCP group was 44%; the mean LAI of the iAS group was 45%; the mean LAI of the iOA group was 47%; the mean LAI of the iAD group was 55%. The non-parametric Wilcoxon-Mann-Whitney U test comparing the control group with each other group showed significance with p-value < α = 0.05 for all groups. Conclusion: The Leukocyte Adherence Inhibition Test is an easy, quick, and inexpensive ex vivo immunoassay with the potential to predict individual immunoreactivity against HDM allergens in real-world patients with non–IgE-mediated allergies.
Hybrid modeling of woven fibre reinforced metal matrix composite for multilayer circuit boards

Purpose – To present a method to model woven fibre reinforced metal matrix composite for multilayer circuit boards.Design/methodology/approach – This paper presents a hybrid modelling method to model multilayer multimaterial composites with the combination of metallic and woven composite plies. Firstly, 3D unit cells of woven composite are idealized as orthotropic plies, while metallic layers are taken as isotropic plies. Secondly, the idealized composite plies and metallic plies are modelled into a 2D multilayer finite element (FE). Lastly, scalar damage parameters are used for damage modelling.Findings – Based on this method, static and dynamic analysis of multilayer composite can be performed at both micro and board levels. Meanwhile, the hybrid model illustrates a good agreement with the experimental results and good computational efficiency required for FE simulation. Conceptually, this study is aimed to provide an efficient damage modelling techniques for laminate composites and flexible modelling m.
Optimization of transformation of measurements of ship hull blocks

Optimization of transformation of measurements of ship hull blocks The paper presents an analysis of measurements taken on ship hull blocks to assess their feasibility for the final stage of assembly in a dry dock or on a slipway. The analysis requires first to check if blocks were manufactured within tolerances assumed in design and then to compare if two neighbouring blocks can be joined to each other. As each block is measured in a different coordinate system it is necessary to make transformations and bring results to a common CAD model without loss of accuracy. An algorithm for optimizing the transformation process to obtain better results, is proposed. The optimization is aimed at minimizing the sum of distances between transformed points and corresponding points in a CAD model. Description of the optimization method and example of its application is also presented. The problem of transformation of measurements or coordinate systems is more general as it can be found, apart from shipbuilding, e.g. in civil engineering, cartography, robot control, pattern recognition, medical imaging.
A Coriolis mass flow sensor structure in silicon

The first mass flow sensor in silicon based on the Coriolis force principle is presented. The basic sensor structure consists of a double-loop tube structure in silicon which can also be used for measurement of fluid density. The tube structure is excited electrostatically in a bending or torsion vibration mode. A liquid mass flow induces a Coriolis force which results in a tube twisting angular motion. The Coriolis angular motion is linearly proportional to the mass-flow and is detected optically. The measurement results show good, true mass flow direction sensitivity with high linearity in the investigated flow range below 0.5 g/s.
Contour scanning of textile preforms using a light-section sensor for the automated manufacturing of fibre-reinforced plastics

Fibre-reinforced plastics (FRP) are particularly suitable for components where light-weight structures with advanced mechanical properties are required, e.g. for aerospace parts. Nevertheless, many manufacturing processes for FRP include manual production steps without an integrated quality control. A vital step in the process chain is the lay-up of the textile preform, as it greatly affects the geometry and the mechanical performance of the final part. In order to automate the FRP production, an inline machine vision system is needed for a closed-loop control of the preform lay-up. This work describes the development of a novel laser light-section sensor for optical inspection of textile preforms and its integration and validation in a machine vision prototype. The proposed method aims at the determination of the contour position of each textile layer through edge scanning. The scanning route is automatically derived by using texture analysis algorithms in a preliminary step. As sensor output a distinct stage profile is computed from the acquired greyscale image. The contour position is determined with sub-pixel accuracy using a novel algorithm based on a non-linear least-square fitting to a sigmoid function. The whole contour position is generated through data fusion of the measured edge points. The proposed method provides robust process automation for the FRP production improving the process quality and reducing the scrap quota. Hence, the range of economically feasible FRP products can be increased and new market segments with cost sensitive products can be addressed.
Control of chaos in DC-DC converters

It has been demonstrated previously that DC-DC buck and boost converters with current or voltage feedback exhibit chaos for significantly large ranges of parameter values. In this paper, we present two methods for controlling chaos particularly suitable for switching circuits. The results of numerical investigation and experimental implementation are presented with reference to the duty cycle controlled buck converter.
Factors Affecting Self-Regulation of Students in Indonesian Traditional Muslim Schools

This study aims at identifying the factors affecting students' self-regulation. It is seen from Gender, Age, and Duration of study in the Islamic Boarding Schools, Formal Education, Parental Education, Previous Education, and Students Place of Origin. It is to find a new format for the self-regulation of students in traditional Muslim schools. This study applies a quantitative approach to identify factors or variables that influence learning based on student self-regulation. The research design uses an instrument to explore and identify variables. This research is sample research with the Proportional Random Sampling Cluster technique. This technique is used because the population has elements that are not homogeneous and structured proportionally This study uses a sample of 108 students with different backgrounds. From the results of the analysis, it was found that out of the seven factors proposed as variables, five factors influence the self-regulation of students. The findings of this study provide evidence that the student's background dimensions can significantly influence students' self-regulation, so the better the student's background, the better the student's self-regulation. We recommend further studies for deeper examination and analysis of these factors.
Experimental validation of three-dimensional finite element model of pelvis-femur-soft tissue complex under side impact loading

An experimental validation with the pelvic bone or human cadaver has always been considered as a gold standard to assess the accuracy of the finite element predictions. The present study provides an approach in mechanical testing of pelvic bone and human cadaver under side impact load for the purpose of validating the previously developed finite element models of pelvis-femur complex and pelvis-femur-soft tissue complex, respectively. An experimental setup was designed and developed, instrumented with miniature piezoelectric load cell and miniature charge amplifier. PC based data acquisition system was used to record the impact force-time data. The support conditions of the experiments were applied on the finite element model and simulated under similar impact load. Considering all the load cases with pelvic bone and human cadaver, high correlation (r² = 0.966) and significance level (p < 0.0001) were obtained between the experimental and finite element results. It strongly suggests that the numerical results calculated by the finite element models could be used as a valid predictor of the actual results.
Association between General Anesthesia and the Occurrence of Cerebrovascular Accidents in Hip Fracture Patients

Background General anesthesia is an important factor leading to postoperative complications, and cerebrovascular accidents take the first place in the causes of postoperative death. Therefore, it is extremely important to explore the correlation between general anesthesia and the occurrence of cerebrovascular accidents in hip fracture patients. Objective To explore the association between general anesthesia and the occurrence of cerebrovascular accidents in hip fracture patients. Methods The data of 240 hip fracture patients treated in our hospital from February 2017 to February 2021 were retrospectively analyzed, and the patients were divided into the general anesthesia group (n = 120) and nongeneral anesthesia group (n = 120) according to whether or not they received general anesthesia, so as to compare their incidence rate of cerebrovascular accidents between the two groups, record their hemodynamic changes, and analyze the association between various risk factors under general anesthesia and the occurrence of cerebrovascular accidents. Results No statistical differences in patients' general information such as age and gender between the two groups were observed (P > 0.05); compared with the nongeneral anesthesia group, the incidence rate of cerebrovascular accidents was significantly higher in the general anesthesia group (P < 0.001); between the two groups, the heart rates and mean arterial pressure (MAP) at 15 min after anesthesia, at the time of skin incision, and 15 min before the end of surgery were significantly different (P < 0.05); according to the multiple logistic regression analysis, general anesthesia was a risk factor affecting the occurrence of cerebrovascular accidents in hip fracture patients, and under general anesthesia, age ≥80 years, BMI ≥23 kg/m2, types of anesthetic drugs ≥4, intraoperative blood pressure ≥140 mmHg, and intraoperative heart rate ≥80 bpm were also regarded as the risk factors. Conclusion General anesthesia is a risk factor affecting the occurrence of cerebrovascular accidents in hip fracture patients, and under general anesthesia, age ≥80 years, BMI ≥23 kg/m2, types of anesthetic drugs ≥4, intraoperative blood pressure ≥140 mmHg, and intraoperative heart rate ≥80 bpm will further increase the possibility of cerebrovascular accidents.