Miracle-dz/UniFAR-FTUs huggingface dataset:
Miniaturized implantable broadband antenna for biotelemetry communication

A body‐implantable miniaturized and broadband stacked antenna suitable for biotelemetry communication is proposed. By properly arranging a rectangular three‐layer slotted patch structure, the designed antenna with only 10 × 10 × 1.9 mm3 can provide a −10 dB impedance bandwidth of 50 MHz in the 402–405 MHz medical‐implant‐communication‐service frequency band. When compared with the reported most compact antenna, the proposed design achieves not only a more monopole‐like radiation pattern with a double‐radiation efficiency of 0.61% but also a size reduction of 43%. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2407–2409, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23649
Study of the influence of input parameters in an air channel on mass and heat transfer phenomena within a wall saturated with water: application to the renovation of old wet buildings

In order to control moisture in old buildings, a new technology consists in incorporating a ventilation system into the air space located between the thermal insulation and the wet wall. This technology is considered as one of the effective solutions to achieve the comfort of the occupants, the durability of the insulation. A mathematical approach based on the darcien model was developed, in order to analyse the influence of effective coupled parameters which are heat, moisture, and air on the evaporation performance of a porous layer. A hybrid coupling combining both the Boltzmann method and the finite volume method is proposed. The results show that blowing air in winter conditions affect markedly the heat and mass exchanges at the interface between the porous layer and the channel. However, blowing air in summer conditions provide drying the wall and decrease the risk of development of mould.
Medium-Term Impact of the Coronavirus Disease 2019 Pandemic on the Practice of Percutaneous Coronary Interventions in Japan

Aims: Declines in cardiovascular diseases during the first surge of coronavirus disease 2019 (COVID-19) have been reported. With the repeating surges of COVID-19, we aim to investigate the medium-term impact of the COVID-19 pandemic on the practice of percutaneous coronary interventions (PCIs). Methods: We performed a descriptive analysis of rates of PCIs, utilizing administrative data in Japan. Changes in the proportion of severe cases and in-hospital mortality since the start of the COVID-19 pandemic were investigated using interrupted time series (ITS) analyses. Results: From April 2018 to February 2021, 38,696 and 28,585 cases of elective and emergency PCIs, respectively, were identified. The rates of PCIs decreased during the first and third COVID-19 surges. The ratios of monthly rates of elective PCIs to that in the corresponding months during the previous 2 years were 50.3% in May 2020 and 76.1% in January 2021. The decrease in rates of emergency PCIs was smaller than that of elective PCIs. The ITS analyses did not identify any significant changes in the proportion of severe cases and in-hospital mortality. Conclusions: We found that the impacts of COVID-19 on PCIs were larger in the first surge than in the subsequent and larger in the elective than in the emergency; this continued over the medium-term. During the COVID-19 pandemic, in-hospital mortality of cases undertaking emergency PCIs did not change.
Depression, anxiety, and stress during the sanitary emergency of COVID-19 in southeastern México

Aim: Evaluate the level of depression, anxiety, and stress;and identify the factors associated with these psychological responses during the third phase of the COVID-19 health emergency in a sample of Mexican population. Methods: An online cross-sectional survey was conducted. We performed bivariate and multivariate analyses to identify factors associated with depression, anxiety, and stress. Results: We included 997 individuals with a mean age of 35.3 +/- 12.9 years;symptoms of stress. Respondents were more likely to present depression if they were <40 years old (OR 1.73), not having a religion (OR 1.71), if they were currently unemployed (OR 1.54). Factors associated with anxiety were age<40 years old (OR 1.73) and having recent contact with suspected or diagnosed patients with COVID-19 (OR 1.54). Self-perception of insufficient knowledge about COVID-19 disease was associated with stress (OR 1.55). Declaring not feeling safe of COVID-19 infection was associated with depression (OR 2.03), anxiety (OR 1.90), and stress (OR 1.75). Conclusions: The damage to mental health caused by the COVID-19 pandemic is evident;health personnel must pay attention to their psychological state and well-being to take appropriate measures.
Turbulent Superstructures in Inert Jets and Diffusion Jet Flames

An experimental study of spatially localized very large-scale motion superstructures, propagating in a jet of carbon dioxide at low Reynolds numbers, was carried out. A hot-wire anemometer and a high-speed 2D PIV with a frequency of 7 kHz were used as measuring instruments. Such a puff-type superstructure in a jet with a longitudinal dimension of up to 20–30 nozzle diameters are initially formed in the jet source—a long tube in a laminar-turbulent transition mode (without artificial disturbances). It is shown that this regime with intermittency in time, when part of the time flow is laminar and the other part of time is turbulent, exists both at the exit from the nozzle and in the near field of the jet. Thus, the structural stability of such turbulent superstructures in the near field of the jet was found. Despite the large longitudinal scale, these formations have a transverse dimension of the order of several nozzle diameters. These structures have a complex internal topology, that is, superstructures are a conglomeration of vortices of different sizes from macroscale to microscale. Using the example of diffusion combustion of methane in air, it is demonstrated that in reacting jets, the existence of such large localized perturbations is a powerful physical mechanism for a global change in the flame topology. At the same time, the presence of a cascade of vortices of different sizes in the puff composition can lead to fractal deformation of the flame front.
Introduction: Water for Food and Ecosystems: How to Cut which Pie?

Two decades of awareness-raising and dialogues have clearly spelled out the water-related challenges the world is facing. Still, not enough concrete improvements have been realized on key issues, such as the coverage of potable water and sanitation services, and an adequate balance between water for food and ecosystems. Addressing these problems remains a continuous challenge that can only be confronted with an integrated approach, comprising knowledge generation, permanent communication between very different stakeholders, adequate capacity-building and continuous learning, and innovative technology development. With a view to the Fourth World Water Forum in Mexico, this contribution reviews such issues, drawing lessons from experience in a program on Water for Food and Ecosystems (funded by Netherlands Partners for Water initiative) and related on-going work in this area carried out by Wageningen University and Research Centre working closely with partner institutions inside and outside the Netherlands. The debate is structured around three key dimensions (i) balancing human and natural values of water, (ii) multiple stakeholder involvement, (iii) technological innovation. Visualized in the Triangle of Sustainability, the study recognizes the advances made in integrating political processes such as multi-stakeholder negotiation in water resource management as a way of achieving a better balance between the values of water, but warn against neglecting the potential for technical advances that can help increasing the size of the ‘cake’ as a whole.
E-management: Barriers and challenges in Iran

E-business success will be much higher for those or ganizations that consume their time and resources to address the area of E-management. E-management will be critical for ensuring that e-business applications are available for cust omers. The aim of this paper is to review and analyze the barriers for E-management in Iran. This research is applied using descriptive and survey method. The findings of this paper show that among 25 factors, classified in 6 main factors: managerial, humanistic, cultural-soci al, organizational-structural, technical- technological and environmental factors, main facto rs that are preventing the implementation of E-management in Iran are cultural, environmental and organizational factors.
Zearalenone Exposure Triggered Cecal Physical Barrier Injury through the TGF-β1/Smads Signaling Pathway in Weaned Piglets

This study aims to investigate the effects of exposure to different dosages of zearalenone (ZEA) on cecal physical barrier functions and its mechanisms based on the TGF-β1/Smads signaling pathway in weaned piglets. Thirty-two weaned piglets were allotted to four groups and fed a basal diet supplemented with ZEA at 0, 0.15, 1.5, and 3.0 mg/kg, respectively. The results showed that 1.5 and 3.0 mg/kg ZEA damaged cecum morphology and microvilli, and changed distribution and shape of M cells. Moreover, 1.5 and 3.0 mg/kg ZEA decreased numbers of goblet cells, the expressions of TFF3 and tight junction proteins, and inhibited the TGF-β1/Smads signaling pathway. Interestingly, the 0.15 mg/kg ZEA had no significant effect on cecal physical barrier functions but decreased the expressions of Smad3, p-Smad3 and Smad7. Our study suggests that high-dose ZEA exposure impairs cecal physical barrier functions through inhibiting the TGF-β1/Smads signaling pathway, but low-dose ZEA had no significant effect on cecum morphology and integrity through inhibiting the expression of smad7. These findings provide a scientific basis for helping people explore how to reduce the toxicity of ZEA in feeds.
Performance Analysis of Mars-Powered Descent-Based Landing in a Constrained Optimization Control Framework

It is imperative to find new places other than Earth for the survival of human beings. Mars could be the alternative to Earth in the future for us to live. In this context, many missions have been performed to examine the planet Mars. For such missions, planetary precision landing is a major challenge for the precise landing on Mars. Mars landing consists of different phases (hypersonic entry, parachute descent, terminal descent comprising gravity turn, and powered descent). However, the focus of this work is the powered descent phase of landing. Firstly, the main objective of this study is to minimize the landing error during the powered descend landing phase. The second objective involves constrained optimization in a predictive control framework for landing at non-cooperative sites. Different control algorithms like PID and LQR have been developed for the stated problem; however, the predictive control algorithm with constraint handling’s ability has not been explored much. This research discusses the Model Predictive Control algorithm for the powered descent phase of landing. Model Predictive Control (MPC) considers input/output constraints in the calculation of the control law and thus it is very useful for the stated problem as shown in the results. The main novelty of this work is the implementation of Explicit MPC, which gives comparatively less computational time than MPC. A comparison is done among MPC variants in terms of feasibility, constraints handling, and computational time. Moreover, other conventional control algorithms like PID and LQR are compared with the proposed predictive algorithm. These control algorithms are implemented on quadrotor UAV (which emulates the dynamics of a planetary lander) to verify the feasibility through simulations in MATLAB.
Development of a Vibroimpact Device for the Resonance Hammer Drilling

Hard rock drilling is still a great challenge for oil companies. One current line of research involves combining the two existing drilling techniques in order to enhance the rate of penetration. This new technique is called Resonance Hammer Drilling. This article proposes the design and development of the first prototype that will operate in resonance, and will be capable of generating considerable dynamic forces. This device will be known as the Resonant Impact Device, or "RIMD". In principle the idea is to build some sort of a "black box", which will be mounted on a vibrating structure with two switches - one calibrating the RIMD resonance frequency and the other acting on the impacts - changing the size of the gap. It is known from previous work that gap size also has influence on the system natural frequency. Therefore there is a relationship between switches. One of the first steps of RIMD design and development is device dimensioning, necessary in order to construct a scale model at the Dynamic and Vibration laboratory at PUC- Rio representative of the real size system. The real size system will be mounted on the drillstring. RIMD components involve a mass-spring system with low damping and some impact and a gap variation device. The analysis of this prototype includes obtaining key characteristics such as the range of possible frequencies and the measurement of the generated impulsive forces. Finally, the built prototype will be used to validate an analytical model that will allow further investigations on this subject providing the way to other possible constructions.
Application of machine learning in rapid analysis of solder joint geometry and type on thermomechanical useful lifetime of electronic components

Abstract Rapid reliability analysis of the solder joints in the electronic devices identifies as an appeared gap in the design stage. This paper demonstrates the feasibility of employing the neural network in the solder joint useful lifetime estimation. A dataset is prepared for training a deep neural network under different conditions using finite element simulations. The contributory parameters including thermal specifications, solder joint geometry and solder joint type are considered in 420 finite element simulations. While the proposed approach has a remarkably quick reliability assessment, the predicted results showed a maximum root mean square error of 3.2%. The results reveal that there exists an optimum solder joint volume in which the maximum useful lifetime under the certain thermal loading. Also, it is found that the hourglass type solder interconnection has better performance in comparison with barrel type solder interconnection as the reliability perspective owing to the more gentle triaxiality factor. Ability of rapid reliability analysis and effects consideration of key parameters on the solder joint reliability make this proposed method attractive in the design stage of electronic devices.
Implicit dynamic system for online simultaneous linear equations solving

A novel implicit dynamic system is exploited and investigated for online simultaneous linear equations solving. Compared to the classic gradient-based dynamic system and the recently-proposed Zhang dynamic system, the proposed implicit dynamic system can achieve superior global exponential convergence performance. Theoretical analysis and computer simulation results substantiate the effectiveness and efficiency of the proposed model for the real-time solution of simultaneous linear equations.
Single Imputation Methods and Confidence Intervals for the Gini Index

The problem of missing data is a common feature in any study, and a single imputation method is often applied to deal with this problem. The first contribution of this paper is to analyse the empirical performance of some traditional single imputation methods when they are applied to the estimation of the Gini index, a popular measure of inequality used in many studies. Various methods for constructing confidence intervals for the Gini index are also empirically evaluated. We consider several empirical measures to analyse the performance of estimators and confidence intervals, allowing us to quantify the magnitude of the non-response bias problem. We find extremely large biases under certain non-response mechanisms, and this problem gets noticeably worse as the proportion of missing data increases. For a large correlation coefficient between the target and auxiliary variables, the regression imputation method may notably mitigate this bias problem, yielding appropriate mean square errors. We also find that confidence intervals have poor coverage rates when the probability of data being missing is not uniform, and that the regression imputation method substantially improves the handling of this problem as the correlation coefficient increases.
Typology of number systems in languages of Western and Central Siberia

This paper investigates the linguistic expression of number in seven languages from Western and Central Siberia. In a first step the number system of each language is described in detail, and afterwards the most relevant convergences and divergences of the languages are dealt with. Three particularly interesting phenomena are discussed in more detail: First, it is shown that the concept of general number, denoting noun forms underspecified for number, is able to account for a range of related phenomena (unmarked noun forms after numerals, nouns denoting paired objects). Second, singulatives in Selkup, Ket and partly Eastern Khanty are analyzed, whereby it is argued that their similar morphosyntactic and grammaticalization patterns allow for analyzing them as a contact phenomenon. Third, two splits on the animacy hierarchy between the first and second person in Dolgan as well as Chulym Turkic are presented. Finally, the results are evaluated against a broader areal-typological background, whereby it is shown that the category of number does not support any larger areal groupings within Western and Central Siberia, but that the analyzed languages rather adhere to patterns of number marking present all over Northern Eurasia.
Updating the Standardized Terminology for Nurses' Daily Documentation

In Finland, the nationally unified and standardized nursing documentation model comprises the nursing process model and the Finnish Care Classification (FinCC). The aim of the study was to assess how well the further developed FinCC complies with actual nursing practices and how pragmatic and understandable it is. An e-questionnaire based on the revised version of the FinCC was sent to healthcare organizations (n=34) and Universities of Applied Sciences (n=14). Data was gathered and organized in Excel. Narrative comments were read and analyzed. The mean of questions of 17 components of both the FICND and the FICNI was over four (scale 1-5). The biggest revision of the FinCC is that different scales and evidence-based research have been utilized in the development of the terminology. Based on the findings, revisions have been made, and the new version, FinCC 4.0, will be published at the end of 2019.
Eefect Of Heat Stress On Perfprmance Of Dairy Friesian Cows 1- Milk Production And Composition

A total of 1243 available records were collected for 581 Friesian cows during 8 year period from 1997 to 2004 were used to study heat stress on milk production and composition. Average temperature humidity index (THI) values confirm the presence of heat stress during the period from June to September (summer season). Heat stress during summer season led to significant decrease (P<0.05) in lactation period by 35 day and reduced total, 305 and daily milk yield by 39.00, 31.40 and 29.84% and the percentages of fat, protein, lactose, solids not fat, total solids and ash by 7.92, 4.06, 3.97, 4.03, 5.21 and 5.63% compared with winter season, respectively. (Gaafar, HMA, El-Gendy ME, Bassiouni MI, Shamiah ShM, Halawa AA, Abu El-Hamd MA. Eefect Of Heat Stress On Perfprmance Of Dairy Friesian Cows 1- Milk Production And Composition Researcher. 2011;3(5):85-93). (ISSN: 1553-9865). http://www.sciencepub. net .
Social Cohesion, Ethnicity and Well-Being: Results from an Intervention Study in Kyrgyzstan

When looking at important indicators of well-being, there is extensive evidence that levels of life satisfaction differ between ethnic groups, such that minority groups by and large tend to report lower levels of life satisfaction than majority ethnic groups. A growing body of literature has begun investigating the relationship between an individual’s community and their own levels of life satisfaction. While community deprivation and community ethnic composition are important factors for understanding individual ethnic disparities in life satisfaction, there is a gap in understanding the role of community social cohesion, as well as the effect on change in life satisfaction over time. Using panel survey data from 5.207 adults living in 30 sub-districts of rural Kyrgyzstan, we conduct a multilevel analysis of whether social cohesion serves as a moderator for the relationship between ethnicity and change in life satisfaction. While results do not demonstrate a positive effect of community social cohesion on change in life satisfaction, they do indicate that higher levels of community social cohesion minimize the ethnic group disparities in change in life satisfaction. These findings imply that social cohesion may be one additional piece of the puzzle in understanding ethnic disparities in life satisfaction.
Efficacy and Tolerability of Thermocoagulation Treatment of High-Grade Cervical Intraepithelial Neoplasia

Purpose: Cervical cancer is still one of the main causes of cancer and mortality in women, especially in low- and middle-income countries, although it is a completely preventable disease through the detection and treatment of pre-cancer lesions. We evaluated the efficacy and tolerability of thermocoagulation treatment of high-grade cervical intraepithelial neoplasia (CIN 2 and 3). Methods: We evaluated 115 women with high-grade cervical intraepithelial neoplasia, 54 with CIN 2 and 61 with CIN 3, confirmed by biopsy and without previous treatment, from January 2016 to December 2018, under-going thermocoagulation treatment at the Lower Genital Tract Pathology and Colposcopy Service of the Hospital de Clinicas de Porto Alegre , Porto Alegre, Brazil. Results: The mean age was 33.11 years (SD = 9.83) for CIN 2 and 35.28 years (SD = 7.97) for CIN 3 patients. Treatment efficacy was 90.8% in CIN 2 and 94.9% in CIN 3 cases. Pain was the main symptom