Miracle-dz/UniFAR-FTUs huggingface dataset:
Impact of ∆neff of 850nm VCSEL cavity on low noise for 100G eSR4 transmission and its potential for ≥400G datacenter optical interconnects

As global IP traffic demands are exponentially growing, the increase in sub-system and system level requirements for higher speeds and longer transmission distances from multi-mode fiber (MMF) based vertical-cavity surface-emitting laser (VCSEL) optical links are fundamentally inhibited by bandwidth limits due to inherent fiber dispersions as well as transmitter noise impairments. Noise variances such as spectral linewidth (Δ𝜆rms), relative intensity noise (RIN), mode noise (MN), mode partition noise (MPN), chromatic dispersion (CD), frequency chirp and reflection feedback etc., all have serious ramifications on signal-to-noise ratio (SNR) in degrading receiver sensitivity. In order to drive the systems to higher bandwidth levels, it is important to identify the source of noise impairments, and try to minimize them with optimum component designs that facilitate solutions to achieve high SNR at the receivers. In this contest the author propose a multipurpose effective refractive index (Δneff) model of VCSEL cavity to push data transmission of non-return zero (NRZ) based 100G SR4 to beyond eSR4 limits that can potentially offer stable industrial temperature narrow Δ𝜆rms and low RIN at chip level, low MPN in optical fiber, and high SNR at receiver, respectively. This simple and effective concept with further bandwidth, power and thermal budget improvements likely to have high potential for 850nm VCSEL use in PAM-4 based top of the rack (TOR)-leaf and leaf-spine 400G (SR8, SR4.2)/800G (SR16) Datacenter optical interconnects (DCI). The Δneff occurred from multilayer distributed Bragg reflector (DBR) stacks and quantum well active regions due to oxide layer is critical in fixing Δ𝜆rms of VCSELs as the data transmission distance is inversely proportional to Δ𝜆rms. The author discusses the impact of Δneff in creating narrow Δ𝜆rms and its benefit on low MPN in basic light transmitter units of NRZ 25.78125Gb/s and 28.05Gb/s transmissions of VCSELs in 100G eSR4 optical links with performance margin up to 400m in OM4 MMF at 85C with inexpensive power penalties at the receiver without equalization, pre-emphasis and error correction techniques.
Competitive Relationship Prediction for Points of Interest: A Neural Graphlet Based Approach

Competition between Points of Interest (POIs) refers to the situation in which two POIs directly or indirectly provide similar services to secure businesses. A large portion of prior studies on competition analysis focuses on mining textual data, e.g., news articles and social comments. However, the increasing availability of human mobility and mobile query data enables a new paradigm for analyzing the competitive relationships among POIs, which remains largely unexplored. To this end, in this paper, we attempt to mine large-scale online map search query data for better understanding POI competitive relationships. Based on a co-query POI graph built from the map search query data, we develop a novel neural graphlet-based prediction framework to predict the competitive relationships among POIs. A unique perspective of our model is to infer latent POI competitive relationships by integrating multiple distinct factors, e.g., graphlet structure, geographical distance, and regional features, reflected in map search query data and POI data. Finally, we conduct extensive experiments on real-world datasets to demonstrate the effectiveness of the proposed framework, and show that our framework outperforms all baselines with a significant margin in all evaluation metrics.
Recomposing persons: Scavenging and storytelling in a birth cohort archive

Birth cohort studies can be used not only to generate population-level quantitative data, but also to recompose persons. The crux is how we understand data and persons. Recomposition entails scavenging for various (including unrecognised) data. It foregrounds the perspective and subjectivity of survey participants, but without forgetting the partiality and incompleteness of the accounts that it may generate. Although interested in the singularity of individuals, it attends to the historical and relational embeddedness of personhood. It examines the multiple and complex temporalities that suffuse people’s lives, hence departing from linear notions of the life course. It implies involvement, as well as reflexivity, on the part of researchers. It embraces the heterogeneity and transformations over time of scientific archives and the interpretive possibilities, as well as incompleteness, of birth cohort studies data. Interested in the unfolding of lives over time, it also shines light on meaningful biographical moments.
TRAVELERS SATISFACTION AT COVID19 QUARANTINE CENTERS IN SAUDI ARABIA

Background: Due to global pandemic Covid 19 the tourism industry is badly affected. The free movements of the travelers are restricted due to the high potential of the virus to spread. Travelers visiting Saudi Arabia kingdom has to spend 14 days in quarantine as per the guidelines from WHO to stop spreading of the infection. Several hotels and other centers were converted to quarantine centers for travelers visiting the kingdom from overseas. This research explores the satisfaction index among the travelers who are quarantined in the different quarantine centers of Saudi Arabia. Methods: This study reviews the literature about different guidelines to comply with the requirements of quarantine centers. A critical examination model and explanatory research design is used with the statistical conclusion to understand quarantine centers and service provided. The main objective of this research is to endorse, various factors associated with the quarantine services and its impact on travelers‟ satisfaction. Results: The research results show that the effectiveness of services in the quarantine centers and its significant impact upon the satisfaction level of the tourist. Implication : The study will help to understand travelers‟ satisfaction index, staying at quarantine centers. Conclusion: Travelers are satisfied while staying in the quarantine centers.
Robust adaptive fuzzy sliding-mode control with H/sup /spl infin// tracking performance for a class of nonlinear systems

Since the computed torque or inverse dynamics control techniques are based on a good understanding of the controlled system dynamics and even its environment; the objection for the real-time application is unrealizable for the unknown systems. To tackle this problem, this study developed a robust adaptive fuzzy sliding-mode control system based on the H/sup /spl infin// tracking design technique. The developed control system is comprised of a fuzzy controller and a robust controller. The fuzzy controller is utilized to approximate an ideal controller by the tuning algorithms based on the Lyapunov sense, and the robust controller is designed to achieve H/sup /spl infin// robust tracking performance. To investigate the effectiveness of the developed control system, it is applied to a wing rock motion control system. Simulation results demonstrate that the proposed control system can achieve favorable tracking performances with unknown system dynamics.
Characterising Inter-Individual Growth Variability of Patella vulgata Shell Through Calcein Marking Experiments: Consequences for Palaeo-Environmental Studies

ABSTRACT Sclerochronological data from archaeological shell middens provides crucial information about past environments and subsistence practices of coastal human populations. These studies rely on a strong knowledge of species-specific growth patterns, as it is the main driver of the quantity and quality of information recorded in biogenic carbonates. The limpet Patella vulgata is highly represented in eastern Atlantic shell middens. In this study, the micro-increment formation of its shell was investigated through in situ marking experiments, using calcein fluorochrome (150 mg.L−1) coupled with cohort study and local SST recording. Calcein-stained growth structures confirmed the efficacy of the fluorochrome, and our results shows a disturbed tidal increment formation, with on average more than one increment per day, but less than one increment per tide. Growth is not mainly influenced by environmental factors, but could be forced by competition among limpets and endogenous factor (age and sex), resulting in a highly heterogenous population in terms of growth rates. Growth interruption could not be detected solely by micro-increment observation, causing a major issue for cross-calibration with recorded temperatures, sclerochronological estimation of growth and isotopic profiles. For palaeo-environmental application, we recommend to consider that there is no general population pattern, even at a micro-habitat scale.
Disagreement between PCR and serological diagnosis of Trypanosoma cruzi infection in blood donors from a Colombian endemic region

Abstract Introduction: Chagas' disease is the leading cause of infectious myocarditis worldwide. This infection caused by Trypanosoma cruzi is usually life-long and asymptomatic; however, the third part of infected people can develop severe or even fatal cardiomyopathy. As the parasitemia in the chronic phase is both low-grade and intermittent, T. cruzi infection is principally detected by serology, although this method has sensitivity and specificity limitations. Objective: To determine the level of agreement between serologic and molecular tests in 658 voluntary blood donors from six provinces in the Colombian department of Santander. Materials and methods: We evaluated an array of diagnostic technologies by cross-section sampling performing a serological double diagnostic test for T. cruzi antibody detection (Chagas III ELISA™, BiosChile Group, and ARCHITECT Chagas CMIA™, Abbott;, and DNA detection by polymerase chain reaction (PCR). We collected the demographic, clinical, and epidemiological information of participants. The sample size was calculated using Epidat™ and the statistical analysis was done with Stata 12.1™. Results: PCR was six times more sensitive in detecting T. cruzi infection than ELISA/CMIA with prevalence values of 1.8% (12/658) and 0.3% (2/658), respectively, and kappa=0.28 (95%CI: -0.03 - 0.59). In contrast, serology showed a sensitivity of 16.7% (95%CI: 2.09 -48.4) and a specificity of 100% (95%CI: 99.4 - 100). All seropositive samples were found to be positive by PCR. Conclusions: The implementation of PCR as a complementary method for screening donors could reduce the probability of false negative and the consequent risk of transfusional-transmission of Chagas' disease, especially in endemic regions.
Construction of low-cost 3D scanner using triangulation and Screened Poisson Surface Reconstruction techniques

The application of 3D scanner technology among industrial practitioner in Indonesia and Malaysia is still at the beginning stage. Compared to others, this technology has already been adapted mostly by growing country such as China, Korea, US, Germany and Italy. This technology can be seen implemented in manufacturing, aerospace, medical and dentistry industries. The concept of 3D scanner technology is mainly to improve the reverse engineering process. Due to the high cost of 3D scanner machine available in the market, therefore a reasonable cost-effective 3D scanner is needed to be developed especially for education purposes. The objective of this project is to develop low-cost 3D scanning setup to create a mesh of a small-scale object with the help of open-sources software for 3D scanning and 3D mesh processing. Triangulation technique was used for the scanning process to capture the object surface. Screened Poisson Surface Reconstruction techniques was applied to improve the uncomplete and uneven surface mesh. In order to test the setup, 3D scanning was conducted on 4 different objects with different colours and surface finish. The scanning results show that the proposed method produced a good 3D mesh with less noise and less uncomplete surface.
Optimized passive design space exploration of silicon microring resonators

In this work, we analyze passive parameters for a band of 1500 to 1600 nm in microring resonators (MRRs). Such analysis can be vital for estimating an appropriate parameter design exploration with potential applications on Wavelength Division Multiplexing (WDM) solutions. Using a coupled mode theory-based method, we found optimal design spaces for MRRs with radii from 5 to 10 µm and bus-ring gap from 0.12 to 0.21 µm. For All-Pass MRRs, we found an optimal design space where the transmittances in the resonant frequencies are down to 8% in the Through port, while for the Add-Drop MRRs, we found an optimal design space where for transmittances in the Drop port are from 0.77 to 1. We also found optimal design spaces for Q-factors between 2000 and 3800. To find the optimal ring/radius and bus-ring gap values inside the design spaces, we use the particle swarm optimization technique. The data obtained with the exhibited work also shows a modal analysis for the supermodes formed by the cross-section of the bus-ring interface and the impact of UV-lithography common fabrication errors, even due to wafer die positioning. With the latter, our work provides a comprehensive design space exploration and helps designers to know the effect that typical structural fabrication errors will have on the passive resonance.
Targeted Therapy in Chronic Diseases Treatment by Nanomaterial Based Drug Delivery

The application of nanomedicines is increasing rapidly with the promise of targeted and efficient drug delivery. Nanomedicines address the shortcomings of conventional therapy, as evidenced by several preclinical and clinical investigations indicating site-specific drug delivery, reduced side effects, and better treatment outcome. The development of suitable and biocompatible drug delivery vehicles is a prerequisite that has been successfully achieved by using simple and functionalized liposomes, nanoparticles, hydrogels, micelles, dendrimers, and mesoporous particles. A variety of drug delivery vehicles have been established for the targeted and controlled delivery of therapeutic agents in a wide range of chronic diseases, such as diabetes, cancer, atherosclerosis, myocardial ischemia, asthma, pulmonary tuberculosis, Parkinson’s disease, and Alzheimer’s disease. Understanding of the characteristics of nanoparticles and their interactions with the biological environment will enable us to establish novel strategies for the treatment, prevention, and diagnosis in many diseases, particularly untreatable ones.
Fourier Transform Infrared and Raman Characterization of Silica-Based Materials

Fourier Transform Infrared and Raman are powerful techniques to evaluate silica and hybrid silica structure. It is possible to evaluate the silica network formation along the hydrolysis and condensation reactions in terms of siloxane rings formation and Si–O(– Si) angle deformation due to the introduction of organic groups, the employed synthetic route or encapsulated species interaction. The siloxane four- or six-membered rings imply in a more rigid or flexible network, respectively, in order to accommodate the organic groups. A structural analysis of the materials is of high importance, since interactions between the encapsulated molecules and the matrix are critical for the device performance, such as sensors. This type of device needs the permeation of an analyte to activate the encapsulated receptor molecules inside the silica structure. Fourier transform infrared spectrometry can be also used to determine parameters of the silica network as a function of the hydrophilicity/hydrophobicity degree and the siloxane ring structure with respect to thin film porosity. This silica structural analysis is reviewed along the text in a tentative of better exploring the data resulting from these powerful techniques. In addition, the functionalization of silica structures by the use of organoalkoxysilanes, which is important to the creation of high-specific materials, can be well described by these two complementary techniques. The Si–C bonds and the maintenance of the organic substituents such as methyl, octyl, octadecyl, vinyl, phenyl, aminopropyl, mercaptopropyl, isocyanatopropyl, iodopropyl, chloropropyl and glicydoxypropyl could be evaluated after the sol-gel synthesis process. The literature regarding silica vibrational spectroscopy is also explored creating a data bank of wave numbers for the most important bonds for different types of silica and hybrid silica materials obtained by different synthetic routes. (IRES), micro-FTIR
Hardware in the loop simulative setup for testing the combined heat power generating wind turbine

This paper describes the design and implementation of hardware in the loop (HIL) system based on induction motor wind turbine emulator for the study of the operation of a combined heat-power (CHP) generating wind energy conversion system (WECS). The energy generation part of the WECS consists of two specially designed generators that are placed on a common vertical axis, which is connected to the induction motor through a gearbox. The first generator is an electric two-armature axial PMSG and the second one is a thermal electromagnetic retarder. The software part of the HIL setup simulates the interaction of the wind flow with a vertical axis wind turbine (VAWT) and is implemented in a programmable logic controller based on the model developed in the MATLAB/Simulink. The results of experimental studies of the CHP WECS with the created HIL simulative setup at both constant and turbulent wind speeds have shown good agreement with the corresponding results of computer simulation. The created HIL simulative setup will be used for the development of an energy management system for CHP WECS.
Detailed modelling and simulation of different DC motor types for research and educational purposes

The devastating impact of Covid-19 pandemic accelerated the shift to e-learning in the higher education. Particularly in the electrical machines courses, that often include laboratory experiments. However, no detailed models of DC motors, developed in MATLAB/Simulink, were reported in literature. Hence, in this paper, a virtual laboratory consist of models of DC motors was built for the first time. The proposed models are easy to use and modify, and allow all machines’ parameters to be altered for students to replicate easily to support and enhance the learning process of electrical machines courses. Consequently, the developed models are effective tools for educational and research purposes. Dynamic models of DC motors were developed using MATLAB/Simulink, namely separately excited, permanent magnet, shunt-connected and series-connected DC motors. Two different approaches for modelling were proposed, the block diagram representation and Simscape based models. The two modelling methods were validated against the built-in DC machine model. The proposed models are easy to use and modify, and allow all machines’ parameters to be altered for monitoring and comparison purposes. Consequently, the developed models are effective tools for research and educational purposes.
Full-Duplex MAC Protocol Based on CSMA/CA for Switching Transmission Mode

Full-duplex (FD) radios can transmit and receive packets simultaneously in the same frequency band. Although this potentially doubles the spectral efficiency, it also causes inter-node interference, which was not an issue for half-duplex (HD) radios and can significantly reduce FD radio throughput. This paper proposes a hybrid transmission switching algorithm to reduce performance degradation due to inter-node interference. In contrast to previous studies that only considered channel capacity, we determine the transmission mode by considering the modulation and coding scheme (MCS). The access point compares the required transmission time for HD, FD, and hybrid mode and selects the mode with the best network throughput. We also designed an analytical model to evaluate network throughput for the proposed algorithm. In particular, we consider FD pair probability, which has not been addressed previously. Analytical and simulation results verify that the proposed algorithm improves network performance.
Consciousness or safety? Gender issues in an internal selection process

Resumo O caso aborda a situação vivenciada por Gustavo, gestor de uma equipe de seis analistas da diretoria financeira de um grande banco público. Um dos analistas seniores da equipe havia sido promovido a gerente de outra área e ele se viu diante da necessidade de escolher um dos analistas plenos de sua equipe para o cargo. Analisadas as competências e o perfil dos candidatos, Gustavo tinha a convicção que Clarice era a mais preparada para assumir a vaga. Ao mesmo tempo, ele sabia que Clarice poderia engravidar em um futuro próximo e, se isso ocorresse, por uma condição médica especial, ela passaria um ano ausente, somadas as licenças saúde e maternidade. Gustavo se vê, portanto, diante de um dilema. Deveria ele levar em conta apenas as habilidades da candidata, ou seria também necessário considerar a repercussão entre os demais colegas e o impacto sobre o trabalho de toda a equipe caso ela engravidasse logo após a promoção?
Empirical Characterization Factors for Life Cycle Assessment of the Impacts of Reservoir Occupation on Macroinvertebrate Richness across the United States

The transformation of a river into a reservoir and the subsequent occupation of the riverbed by a reservoir can impact freshwater ecosystems and their biodiversity. We used the National Lake Assessment (134 reservoirs) and the National Rivers and Streams Assessment (2062 rivers and streams) of the United States Environmental Protection Agency in order to develop empirical characterization factors (CFs; in Potentially Disappeared Fraction of species [PDF]) evaluating the impacts of reservoir occupation on macroinvertebrate richness (number of taxa) at the reservoir, ecoregion and country spatial scales, using a space-for-time substitution. We used analyses of variance, variation partitioning, and multiple regression analysis to explain the role of ecoregion (or regionalization; accounting for spatial variability) and other potentially influential variables (physical, chemical and human), on PDFs. At the United States scale, 28% of macroinvertebrate taxa disappeared during reservoir occupation and PDFs followed a longitudinal gradient across ecoregions, where PDFs were higher in the west. We also observed that high elevation, oligotrophic and large reservoirs had high PDF. This study provides the first empirical macroinvertebrate-based PDFs for reservoir occupation to be used as CFs by LCA practitioners. The results provide strong support for regionalization and a simple empirical model for LCA modelers.
Comparison of the Effectiveness of Glucose and Sucrose Against General Endurance of the Hockey Players Faculty of Sport Science, Makassar State University

This study aims to determine the comparison of the effectiveness of glucose and sucrose to the general endurance of hockey players in FIK UNM. The type of research used is descriptive comparative, the population of this study is 35 members of the FIK UNM hockey club, and the sample is 20 hockey players at FIK UNM through purposive random sampling technique. Based on the results of the data analysis, the comparative data on the effectiveness of glucose and sucrose obtained through the bleep test obtained a significant value of the comparison of the effectiveness of giving glucose to endurance of 0.007, and the mean value of the initial test was 41.61 and the final test was 44.32. While the significant value of the comparison of the effectiveness of giving sucrose to endurance is 0.021 with an average value of 38.89 in the initial test and an average value of the final test of 42.02. Therefore, the significant value of giving glucose and sucrose to endurance is less than the value of 0.05 or p <0.05 with the comparison of endurance after giving glucose is dominant in the very good category, while the endurance after giving sucrose is in the moderate category and very good.