Miracle-dz/UniFAR-FTUs huggingface dataset:
Results and Conclusions of the European Project IDIHOM on High-Order Methods for Industrial Aerodynamic Applications

In aeronautical industry numerical flow simulation has become a key element in the aerodynamic design process. However, in order to meet the ambitious goals for air traffic of the next decades, significant investment in enhancing the capabilities and tools of numerical simulations in various aspects is required. Within the 7th European Research Framework Programme, the collaborative target research project IDIHOM was initiated. The overall objective of this project was to enhance and mature adaptive high-order simulation methods for large-scale applications. Compared to its low-order counterparts, high-order methods have shown large potential to either increase the predictive accuracy related to the descretization error at given costs or to significantly reduce computational expenses for a prescribed accuracy. The IDIHOM project was driven by a top-down approach, in which dedicated enhancements and improvements of the complete high-order simulation framework, including grid generation, flow solver and visualization, were led by a suite of underlying and challenging test cases. The project gathered 21 partners from industry, research organizations and universities with well-proven expertise in high-order methods. It started end October 2010 and finished March 2014. This paper presents the achievements of the project and highlights strenghts, weaknesses and perspectives of higher-order methods for aerodynamic applications.
Primary Cardiac Lymphoma: A Case Report

Cardiac lymphoma is a rare neoplasm involving heart, pericardium or both, usually seen in immunocompromised patients. We report a 61-year-old male presenting with worsening shortness of breath and 20-pound weight loss. Investigations showed right-sided tumor with interatrial septal wall perforation and left atrial expansion. The diagnosis was confirmed with mediastinal mass biopsy. After receiving the appropriate treatment, there was a steady improvement clinically and on the transesophageal echocardiography.
The Effect of Maternal Behavior around Calving on Reproduction and Wellbeing of Zebu Type Cows and Calves

Simple Summary After a brief introduction establishing the importance of parturition and the establishment of the mother-young bond, this review summarizes knowledge on the maternal behavior of Zebu type cows, including maternal and young behavioral patterns, the protective behavior of the mother and how maternal behavior might be influenced by experience and weather conditions. In addition, the effect of some nutrition, heat stress, calf presence around parturition and its effects on cattle reproductive performance, welfare issues on reproductive behavior and calf performance are reviewed. Finally, some conclusions and practical implications are established. Abstract The behaviors associated with domestic cattle such as maternal care are quite similar to those behaviors observed in wild ungulates. These behaviors allow the cow to bond with her calf, protect and provide it with nourishment and ultimately reduce the bond at weaning. Although maternal behavior is an important factor influencing the survival and early development of the newborn calf, Zebu type cows around calving have not been studied extensively. Herein, we consider the four main aspects of maternal behavior in cattle and particularly Bos indicus cows and calves. Firstly, we provide a brief description of the behavior of cows around parturition and the behavior of the first stages of the calves’ lives. In the second part, the protective behavior of the mother is analyzed. Subsequently, examples of animal welfare implications followed by an analysis of some factors that affect calf survival, including mother experience and weather conditions, are discussed, and in the last part, reproduction along with some peculiarities of reproductive behavior, and the wellbeing of mother and calves are examined. We concluded that knowledge of maternal behavior of Zebu type cows around calving and interactions with calves might contribute to an enhanced reproductive efficiency of the mother and the welfare of the calf.
Anisotropic Behavior of Hot-Mix Asphalt at Low Temperatures

A significant cause of premature pavement deterioration can be attributed to the initiation and propagation of cracks. Hot-mix asphalt (HMA) is thought to be an anisotropic material in which the sample orientation with respect to compaction should be considered when laboratory tests are conducted. The sample orientation could be an important factor for fracture testing of HMA because crack paths are influenced by aggregates. Previous research on the anisotropic nature of HMA has mainly focused on bulk material properties at high temperatures. This research investigated the anisotropic effect of low temperatures for bulk material and separation properties. These two properties were analyzed for samples compacted with the Superpave® gyratory compactor and cored field samples with both vertical and horizontal orientations. Three mixtures were tested for complex modulus, creep compliance, tensile strength, and fracture energy. It was determined that orientation influenced the complex modulus and creep compliance results for these three mixtures. Statistical analysis conducted on the tensile strength test results determined that the mean values were similar. The results from the fracture energy tests did not prove consistent, as there were no clear trends between the three mixtures and the specimen fabrication method.
Camera-Based In-Process Quality Measurement of Hairpin Welding

The technology of hairpin welding, which is frequently used in the automotive industry, entails high-quality requirements in the welding process. It can be difficult to trace the defect back to the affected weld if a non-functioning stator is detected during the final inspection. Often, a visual assessment of a cooled weld seam does not provide any information about its strength. However, based on the behavior during welding, especially about spattering, conclusions can be made about the quality of the weld. In addition, spatter on the component can have serious consequences. In this paper, we present in-process monitoring of laser-based hairpin welding. Using an in-process image analyzed by a neural network, we present a spatter detection method that allows conclusions to be drawn about the quality of the weld. In this way, faults caused by spattering can be detected at an early stage and the affected components sorted out. The implementation is based on a small data set and under consideration of a fast process time on hardware with limited computing power. With a network architecture that uses dilated convolutions, we obtain a large receptive field and can therefore consider feature interrelation in the image. As a result, we obtain a pixel-wise classifier, which allows us to infer the spatter areas directly on the production lines.
ICT Validation in Logistics Processes: Improvement of Distribution Processes in a Goods Sector Company

This article aims to improve the secondary distribution process in a mass consumer company implementing technologies, such as transport management system (TMS) to achieve the objectives set by the company. A DMAIC based methodology is proposed to define and solve structured problems related to secondary distribution, following the performance of the process based on critical to logistics (CTL) factors. The methodology prioritized the design of a master plan for the secondary distribution and the characterization of the secondary distribution process, defining the principal technologies that should compose the business architecture of the secondary distribution, with emphasis on the TMS due to its significant impact and relevance for planning, execution, and control of the distribution process. This study replaces the control component of the DMAIC with the assess component to perform the economic and productivity evaluation of the implementation of a TMS since the improvement proposals were formulated and evaluated. The results show that TMS allows the reduction of delivery time variability, order processing time, voided invoices, distribution costs, the increase in customer service and efficiency in the distribution operation and generates profitability for the medium and long term.
Micromélangeur à advection chaotique pour l’hybridation des puces à ADN

Nous présentons des simulations numériques d’un système de micromélangeur à advection chaotique pour l’hybridation des puces à ADN. Pour obtenir la meilleure réponse possible des puces, il est d’une importance capitale d’assurer une dispersion homogène des molécules d’ADN partout dans la “chambre d’hybridation” dans laquelle la puce est placée. Pour l’écoulement considéré (très simple et périodique en temps), nous comparons les sections de Poincaré obtenues par simulation numérique directe de l’écoulement avec des visualisations sur une maquette à l’échelle 10 : 1, avec un très bon accord. Nous étudions alors, à débit fixé, l’influence de la période de l’écoulement, et montrons l’existence d’un compromis entre l’absence de zones régulières et limitation du volume total. Les résultats illustrent l’importance des simulations numériques pour l’optimisation de tels procédés.
A Qualitative Study on the Life Struggles of the Wives of the Seafarers

The struggles that seafarers have faced during their careers have been the subject of a small number of scientific studies. On the other hand, the number of studies related with the wives of seafarers and the struggles that they experience when the seafarers are at service is scarce. Hence, “the struggles of the wives of the seafarers” has been selected as the topic of this study and the struggles that the wives of the seafarers face when the seafarers are at service, along with the methods that they have developed to overcome these have been put forth in a scientific manner. In this study, 15 seafarer wives residing in Izmir have been selected by way of judgmental sampling method and relevant data have been obtained via face to face interviews. As a result, the life struggles of the wives of the seafarers on land have been put forth via an exploratory research method. This study presented in “The First Global Conference on Innovation in Marine Technology and The Future of Maritime Transportation” in November 24-26, 2010, Istanbul.
Pengaruh Model Pembelajaran Discovery Learning dipadukan Model Peer Tutoring Terhadap Hasil Belajar Biologi Peserta Didik

Based on observations from a biology teacher at SMA Negeri 17 Central Maluku. The data obtained that the results of learning biology are still partly below the average, based on the results of observations it turns out that teaching and learning activities look boring and most students do not pay attention to the teacher's explanation and are cool to talk with their classmates. The purpose of this study was to determine the effect of discovery learning learning models combined with peer tutoring methods on student learning outcomes in class XI SMA Negeri 17 Maluku Tengah. This research is a quasi-experimental research. The sample in this study amounted to 52 students consisting of 26 students in class XI1 as the experimental class and 26 students in class XI3 as the control class. The results of the study show that there is an influence of the discovery learning model combined with the peer tutoring method on student learning outcomes at SMA Negeri 17 Maluku Tengah. Abstrak. Berdasarkan hasil observasi dari salah seorang guru biologi di SMA Negeri 17 Maluku Tengah. Diperoleh data bahwa hasil belajar biologi yaitu masih sebagian dibawah rata-rata, berdasarkan hasil observasi ternyata kegiatan belajar mengajar terlihat membosankan dan sebagaian besar siswa tidak memperhatikan penjelasanan guru serta asik berbincang-bincang dengan teman sebangkunya. Tujuan penelitian ini untuk mengetahui pengaruh model pembelajaran discovery Learning dipadukan metode peer tutoring terhadap hasil belajar siswa kelas XI SMA Negeri 17 Maluku Tengah. Penelitian yang dilakukan merupakan penelitian eksperimen semu. Sampel dalam penelitian ini berjumlah 52 siswa yang terdiri dari 26 siswa kelas XI1 sebagai kelas eksperimen dan 26 siswa kelas XI3 sebagai kelas kontrol. Hasil penelitian menunjukan bahwa terdapat pengaruh model discovery Learning dipadukan metode peer tutoring terhadap hasil belajar siswa di SMA Negeri 17 Maluku Tengah.
RF receiver front end for 28.5 GHz applications on a 70 GHz FT SiGe BiCMOS process

This article presents the design and test of a receiver front end aimed at LMDS applications at 28.5 GHz. It presents a system‐level design after which the receiver was designed. The receiver comprises an LNA, quadrature mixer and quadrature local oscillator. Experimental results at 24 GHz center frequency show a conversion voltage gain of 15 dB and conversion noise figure of 14.5 dB. The receiver operates from a 2.5 V power supply with a total current consumption of 31 mA. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 736–740, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25010
Circuit, MOSFET, and front end process integration trends and challenges for the 180 nm and below technology generations: an International Technology Roadmap for Semiconductors perspective

The IC industry is continuing to follow Moore's Law (Moore, 1995) by rapidly scaling CMOS technology into the deep submicron regime, resulting in increased chip speed, decreased power dissipation per function, increased transistor and function density, and lower cost per function. However, this rapid scaling results in major problems and issues, including maintaining simultaneously large MOSFET drive current and low MOSFET source/drain (S/D) leakage currents, controlling the gate leakage for very thin gate oxides, fabrication and control of very abrupt, shallow S/D functions, etc. These issues are becoming more difficult to handle with succeeding technology generations. In this paper, the key circuit, MOSFET device, and front-end process integration scaling issues and potential solutions are discussed from an International Technology Roadmap for Semiconductors (1999) perspective.
Aplicação do método AHP como ferramenta de apoio decisório à área comercial: estudo de caso em uma distribuidora de gás de cozinha

O presente trabalho tem por objetivo desenvolver um modelo de decisão multicritério a fim de auxiliar uma empresa distribuidora de gás de cozinha na priorização das regiões onde ela atua, para realização de uma intervenção comercial visando ao incremento de suas vendas. Para construção do modelo, foram identificadas as altenartivas a serem consideradas na análise, de acordo com relatórios comerciais internos da empresa, seguido da definição dos critérios de avaliação, identificados por meio de uma pesquisa com os diretores da empresa. Para conduzir o processo de solução do problema de decisão, foi empregado o método de análise multicritério AHP de acordo com a sequência de suas etapas. Com a aplicação do método AHP, foi possível identificar a priorização tanto dos critérios quanto das alternativas. Esta análise permitiu identificar o critério corresponde à "proximidade" com sendo o de maior relevância, seguido pelo "número de habitantes", "perfil do consumidor" e "perda de mercado". A priorização das alternativas gerou uma lista ordenada de vinte regiões que permitirá a adoção de ações comerciais como, por exemplo, distribuição de panfletos, adoção de um programa de fidelidade, estruturação de um serviço de venda por telefone e definição de novas rotas de distribuição.
Performance Investigations of a Quad-band Microstrip Antenna for Body Wearable Wireless Devices

─ This research work proposes a microstripbased quad-band monopole antenna for body Wearable Wireless Devices (WWD) for Wireless Body Area Network (WBAN) applications. Ultra high frequency (UHF) and Ultra wide band (UWB) technology have been known for their efficiency to meet power, size and distance considerations for WBANs. The designed antenna resonates at four frequencies, 1.8, 2.4, 5.0 and 8.9 GHz covering licensed and license-free wireless technologies. The antenna design considers the electromagnetic (EM) effects due to the interaction of body tissues with the radio frequency (RF) waves, which are very different when compared to their interaction with free space. The performance of the antenna is investigated in terms of radiation efficiency, total gain, specific absorption rate (SAR), and thermal effects (short and long term). A simplified, human body tissue layer model is used for simulations utilizing EM computations. Simulated and experimental results are paralleled and are found to be in good agreement. Index Terms ─ Microstrip antenna, quad-band, specific absorption rate, thermal effects, ultra wideband, WBAN, wearable wireless devices.
Small-scale energy harvesting through thermoelectric, vibration, and radiofrequency power conversion

As sensors for a wide array of applications continue to shrink and become integrated, increasing attention has been focused on creating autonomous devices with long-lasting power supplies. To achieve this, energy will have to be harvested from the sensors’ environment. An energy harvesting device can power the sensor either directly or in conjunction with a battery. Presented herein is a review of three types of energy harvesting with focus on devices at or below the cm3 scale. The harvesting technologies discussed are based on the conversion of temperature gradients, mechanical vibrations, and radiofrequency waves. Operation principles, current state of the art, and materials issues are presented. In addition, requirements and recent developments in power conditioning for such devices are discussed. Future challenges specific to miniaturization are outlined from both the materials and device perspectives.
Making a spectacle

A conventional scatter plot representation of actual and planned manufacturing sequence is difficult to interpret without significant background knowledge of both local conditions and the generic manufacturing process. Visualisation can remove these barriers and promote understanding of the underlying manufacturing conditions that contribute to a given level of performance. Manufacturing professionals armed with this knowledge have an opportunity to improve the accuracy of related decision making. A functional prototype has been developed to present automotive manufacturing sequence data using a new form of visualisation facilitated through the manipulation of data and database structures.
MiR155 Affect the Cerebral Ischemic Injury by Rheb/mTOR Signaling Pathway

Ischemic stroke remains to be a leading cause of death and disability worldwide at present. Cerebral ischemia/reperfusion injury (CIRI) is a critical pathogenesis leading to a poor prognosis for ischemic stroke patients.Recent studies have found that miR155 may be involved in the occurrence of CIRI after stroke, but it’s role and specific mechanism are not completely clear.Therefore, this study investigated the effects of miR155 expression levels on mortality, cerebral infarction volume and neuronal apoptosis in MCAO/R rats by changing the expression level of miR155 in the ischemic penumbra (IP) region of rats. QRT-PCR and Western Blotting were used to detect the expression changes of Rheb, mTOR, 4EBP1 and S6K1 under different miR155 expression levels. The results showed that inhibition of miR155 could reduce the mortality, the volume of cerebral infarction and the number of neuronal apoptosis in MCAO/R rats.The mRNA and protein expressions of Rheb, mTOR, 4EBP1 and S6K1 were increased after inhibition of miR155, and vice versa. It suggested that inhibition the expression of miR155 could alleviate CIRI in the IP by activating Rheb/mTOR signaling at the transcriptional level. At the same time, we found that the phosphorylation level of mTOR signaling pathway were also increased after inhibition of miR155, indicating that autophagy level regulated by mTOR signaling pathway may be involved in the CIRI.
Cellular automata for Lamb wave propagation modelling in smart structures

Lamb waves are widely used for damage detection applications in smart structures instrumented with low-profile, surface-bonded piezoceramic transducers. A great deal of research has demonstrated that numerical simulations of Lamb wave propagation are important for practical implementations of the method. A cellular automata algorithm—with a triangular discretization scheme—is proposed for Lamb wave propagation modelling. The method is illustrated using two-dimensional models of damage detection.
Quantification of Bypass Leakage in Two Different Filter Cassettes During Welding Fume Sampling

In South Africa, filter cassettes are used in personal samplers designed for occupational hygiene measurements. One problem envisaged during the sampling of welding fumes was a possible dust loss due to bypass leakage. This could lead to an underestimation of a worker's total aerosol exposure and therefore constitutes a health risk. Bypass leakage was quantified by using two different dust collecting cassettes in laboratory environments. Additionally, a field study for the quantification of bypass leakage in terms of dust loss was carried out in a welding shop. A significant difference existed (P<0.05) between the two filter cassettes at the 95% confidence level. The results showed that representative dust sampling cannot be done without measuring the pressure drop across filters assembled in filter cassettes. It also showed that certain cassettes are more effective in reducing bypass leakage during sampling. Appropriate procedures for testing internal leakage were established to minimize the risk of unde.
Hydrochemical Characteristics of Groundwater at the Epicenter of the 2021 Biru M6.1 Earthquake in Central Tibet

Groundwater is undoubtedly important for water security and eco-environmental protection, especially in areas that experience earthquakes. Analyzing the characteristics and variation of groundwater after an earthquake is significant to obtain a better understanding of the seismic risk and rational management of groundwater resources. This study investigated the hydrogeochemical characteristics of groundwater at the epicenter of the 2021 Biru M6.1 earthquake in central Tibet, southwest China, using 23 water samples. The results showed that: (1) the hydrochemical type, hydrogen and oxygen isotope ratios, and SiO2 concentrations of three hot spring water samples in the study area were significantly different from those of samples taken elsewhere, indicating that the hot spring water originates from deeper geothermal reservoirs and has undergone more distant migration and longer fractionation processes; (2) the geochemical characteristics of groundwater from some sampling sites in the epicentral area were apparently distinct from those of other shallow groundwater or surface water samples, suggesting that the groundwater environment in the epicentral area has been affected by the earthquake. Along with the macroscopic groundwater responses in the epicentral area after the earthquake, we investigated the influencing mechanisms of the earthquake on the regional groundwater environment. We conclude that a shorter distance from the epicenter to the seismogenic fault leads to a greater possibility of the generation of new fractures, which then induce macroscopic responses and chemical characteristic variations for groundwater.
Single-Switch Buck Converter with a Ripple-Free Inductor Current

This paper presents a single-switch buck converter with a ripple-free inductor current. In the proposed converter, the filter inductor current ripple is completely removed by utilizing an auxiliary circuit consisting of an additional winding of the filter inductor, an auxiliary inductor, and an auxiliary capacitor. Moreover, the ripple-free current characteristic is maintained under both light load and full load conditions. The theoretical analysis and performance of the proposed converter were verified with a 110W experimental prototype operating at a 107 kHz switching frequency.