Miracle-dz/UniFAR-FTUs huggingface dataset:
MIMO Relaying UAVs Operating in Public Safety Scenarios

Methods to implement communication in natural and humanmade disasters have been widely discussed in the scientific community. Scientists believe that unmanned aerial vehicles (UAVs) relays will play a critical role in 5G public safety communications (PSC) due to their technical superiority. They have several significant advantages: a high degree of mobility, flexibility, exceptional line of sight, and real-time adaptative planning. For instance, cell edge coverage could be extended using relay UAVs. This paper summarizes the sidelink evolution in the 3GPP standardization associated with the usage of the device to device (D2D) techniques that use long term evolution (LTE) communication systems, potential extensions for 5G, and a study on the impact of circular mobility on relay UAVs using the software network simulator 3 (NS3). In this simulation, the transmitted packet percentage was evaluated where the speed of the UAV for users was changed. This paper also examines the multi-input multi-output (MIMO) communication applied to drones and proposes a new trajectory to assist users experiencing unfortunate circumstances. The overall communication is highly dependent on the drone speed and the use of MIMO and suitable antennas may influence overall transmission between users and the UAVs relay. When the UAVs relaying speed was configured at 108 km/h the total transmission rate was reduced to 55% in the group with 6 users allocated to each drone.
High-Gain Compact Circularly Polarized X-Band Superstrate Antenna for CubeSat Applications

In this letter, a concept of a high-gain circularly polarized X-band antenna employing a partially reflecting surface (PRS) has been presented. In the initial antenna analysis, the influence of parasitic element size in the PRS structure on antenna radiation pattern parameters has been investigated and the optimal arrangement of the elements has been identified. The proposed antenna provides a wide bandwidth of return loss above 10 dB of 20% (8–9.8 GHz) and circular polarization (CP) in a frequency range 8.35–8.95 GHz. The final design is compact (62 × 62 × 22.2 mm) and lightweight (29.7 g), which makes it suitable for use not only in CubeSat X-band communication systems but also in drones and high-altitude pseudosatellite applications.
Towards the Development of Sustainable Tourism in Pakistan: A Study of the Role of Tour Operators

The literature on sustainable tourism is scant, particularly in the least developed countries. Very few studies touch upon the concept and no holistic theoretical or conceptual frameworks around the idea of sustainable tourism have been formulated. This study aims at exploring the role of tour operators in developing sustainable tourism in Pakistan and how the tour operators (TOs) conceive their role in this regard. TOs were reached through phone calls, emails, and virtual sources as face-to-face interviews were not possible due to COVID-19 pandemic and restrictions on travel by the government. In-depth interviews were conducted to gather data. Results suggest that the TOs although realize the importance of social, environmental, and economic dimensions of tourism on the communities but have no management systems in place to cater accordingly. There are no incentives in place by the government facilitate TOs to design and implement such systems. The TOs do not select a destination based on Global Sustainable Tourism Council criterion, but rather the selection of destination is mostly demand-based and profit-oriented. The study suggests that corporate profit motive is the sole criterion for decision making and is one of the major causes impeding sustainable tourism in Pakistan. The role of TOs in developing sustainable tourism is vague as the TOs do not have any systems in place to implement sustainable models. The study recommends that efforts need to be put in place to incentivize sustainable tourism in Pakistan and proper laws should be set forth by the authorities to comply by the TOs. The role of TOs is important and understood, however, there is a need to put proper systems in place.
The Effects of Using Sulfur and Organic Bedding on the Content of Macro- and Micronutrients and Biologically Active Substances in Winter Garlic Bulbs

Sulfur (S) directly influences the proper development, yield, and biological value of Allium sativum. The sulfuric forms of S are easily leached from the soil due to poor sorption. In this context, we looked at to what extent application of S and biomass of catch crops (CCs) left until spring would cause an increase in the yield; we also looked at the macro- and micronutrient content of garlic plants. The experimental factors included applications of 0 and 20 kg ha−1 S to CCs consisting of Trifolium alexandrinum, Raphamus sativus var. oleiformis, Fagopyrum esculentum, Sinapis alba, and control. The bulbs contained more dry matter and macro- and micronutrients (N, P, K, S, Zn, and Fe) than those without S. Garlic plants cultivated with S accumulated more glutathione and total phenolic acids (TPA), and the extracts showed greater antioxidant activity (AA) than those cultivated without S. In 2019 and 2020, the cultivation of winter garlic with S, in combination with clover contributed to an increase in the content of dry matter, S, TPA, AA in bulbs. In the cultivation with fodder radish garlic plants accumulated more nitrogen (N), S, TPA, AA and glutathione in bulbs. In those cultivated with buckwheat, garlic contained more TPA, AA, glutathione, and with mustard more TPA and AA. However, further research is needed to select the species of CC and to determine the S dose to be applied in the effective biofortification of garlic in a sustainable agriculture system.
Efficient Storage of Drug and Cosmetic Molecules in Biocompatible Metal Organic Frameworks: A Molecular Simulation Study

Research on biomedical applications of metal organic frameworks (MOFs) has recently started, and several MOFs have been identified as promising materials for drug storage. In this study, we used molecular simulations to investigate storage and release of an analgesic and anti-inflammatory drug, ibuprofen, and two cosmetic molecules, caffeine (lipo-reducer) and urea (hydrating agent) in biocompatible MOFs. We first compared the results of our molecular simulations with the experimentally available data for ibuprofen, caffeine, and urea uptakes of MOFs. Motivated from the good agreement between molecular simulations and experiments, we extended our simulations to 24 different biocompatible MOFs and predicted their ibuprofen, caffeine, and urea storage performances. Among the materials we studied, bio-MOF-100 and MOF-74 material series were identified as promising candidates for drug/cosmetic molecule storage. These biocompatible MOFs outperformed widely studied drug storage materials such as MIL-53(Fe), MIL.
Green Innovation Strategy and Ambidextrous Green Innovation: The Mediating Effects of Green Supply Chain Integration

Although the importance of green innovation strategy has been recognized, in the existing literature the relationship between green innovation strategy and corporate competitive advantage, as well as the relationship between green innovation strategy and green innovation are still unclear. Based on the resource dependence theory, this paper proposes a mediation model to promote ambidextrous green innovation. The relationship between green innovation strategy and ambidextrous green innovation is discussed, and the mediating role of green supply chain integration is investigated. Based on the questionnaire data from manufacturing companies in three developed economic zones in China, a structural equation model is established to verify our hypotheses. The empirical results show that the green innovation strategy has a positive impact on both exploitative and exploratory green innovation, and the impact on exploratory green innovation is greater than that on exploitative green innovation. Green supply chain integration plays a partial intermediating role in green innovation strategy and ambidextrous green innovation. The implementation of green innovation requires not only internal cross-department integration, but also integration with external supply chain partners such as suppliers and customers. By emphasizing the importance of green innovation strategy in the context of sustainable development, this research helps provide effective strategic directions and required capacity structures for companies to successfully implement green innovation practices, and reduces the uncertainty of green innovation. This study expands previous studies and enriches existing green innovation research.
Multiple vote electoral systems: a remedy for political polarization

ABSTRACT We examine the mechanical effect of a multiple vote, proportional representation electoral system on party vote share in n dimensions. In one dimension, Cox (1990) has proven that such a system is centripetal: it drives parties to the center of the political spectrum. However, as populism has swept across Western Europe and the United States, the importance of multiple policy dimensions has grown considerably. We use simulations to examine how a multiple vote system could alter electoral outcomes in all possible parliamentary systems. We find that multiple vote systems act centripetally in multiple dimensions too, though weakly in extreme cases where parties are sorted into ideological clusters at opposite corners of the ideological space. Even in these cases, though, we find that a slight disturbance of the conditions (by introducing an additional party- even if it is very small) strengthens the centripetal properties of the multiple vote system.
Determination of a New Coastal ENSO Oceanic Index for Northern Peru

In 2017, extreme rainfall events occurred in the northern portion of Peru, causing nearly 100,000 victims, according to the National Emergency Operations Center (COEN). This climatic event was attributed to the occurrence of the El Niño Southern Oscillation (ENSO). Therefore, the main objective of this study was to determine and differentiate between the occurrence of canonical ENSO, with a new type of ENSO called “El Niño Costero” (Coastal El Niño). The polynomial equation method was used to analyze the data from the different types of existing ocean indices to determine the occurrence of ENSO. It was observed that the anomalies of sea surface temperature (SST) 2.5 °C (January 2016) generated the “Modoki El Niño” and that the anomaly of SST −0.3 °C (January 2017) generated the “Modoki La Niña”; this sequential generation generated El Niño Costero. This new knowledge about the sui generis origin of El Niño Costero, based on the observations of this analysis, will allow us to identify and obtain important information regarding the occurrence of this event. A new oceanic index called the Pacific Regional Equatorial Index (PREI) was proposed to follow the periodic evolution and forecast with greater precision a new catastrophic event related to the occurrence of El Niño Costero and to implement prevention programs.
Quasiclassical Trajectory Calculations of the Dissociation Dynamics of CH3CHO at High Energy Yield Many Products

We present a quasiclassical trajectory study of the photodissociation of CH3CHO using a global ab initio-based potential energy surface. Calculations are performed at a total energy of 160 kcal/mol, corresponding to a photolysis wavelength of 230 nm, and with all trajectories initiated from the acetaldehyde global minimum. Many product channels are energetically accessible and observed at this energy, and the branching ratios to these are presented. We identify a minor channel giving H2O plus vinylidene or acetylene. Mechanisms are identified for these products, both of which originate from dissociation of vinyl alcohol an isomer of acetaldehyde. The channel CH2═CHOH → HCCH + H2O produces acetylene with relatively low internal energy, while the acetylene which arises from the subsequent isomerization of vinylidene via the channel CH2═CHOH → [CH2═C + H2O] →HCCH + H2O, is highly excited. The dissociation of CD3CHO is also studied, and both HOD+DCCD (D2CC) and D2O+DCCH products are formed from the same mecha.
Customers' perceptions of returning items purchased online: planned versus unplanned product returners

Purpose – The purpose of this study is to address two issues relevant to those managing product returns: (1) how customers perceive the returning process and assessing the extent that these perceptions have on satisfactionwith the organization, loyalty andword-of-mouth (WOM) and (2) are these outcomesmoderated by whether customer returns were planned or unplanned? Design/methodology/approach – The data consisted of 21 semi-structured interviews (pilot study) and a quantitative survey (n 5 384; main study) targeted at consumers who had bought fashion items online. Findings – Qualitative insights revealed that perceptions of the returning experience are driven by monetary costs, convenience, stress and guilt. Quantitative findings showed that the returning experience explains return satisfaction for both planned and unplanned returners, and returning satisfaction explains overall satisfaction and WOM. The noteworthy difference concerns loyalty: although customers that planned to return items are more loyal to the organization, it is the unplanned returners whose loyalty can be significantly increased by better managing the returning process. Practical implications – Returning products online is increasingly common and thus forms an important part of the customer’s overall experience with an organization. Returns management can therefore drive key customer outcomes. Understanding the dynamics between the product return experience, return satisfaction and customer outcomes will help practitioners design and implement more informed returns management strategies. Measures are also presented that assess the cognitive and emotional aspects associated with returning products. Social implications – Returning products is an increasingly important challenge for online retailers. Understanding what kinds of returning behaviors occur allows companies to design and execute better informed decisions to manage this phenomenon, not only for the sake of firm performance but also for societal and environmental benefits – the triple bottom line. Originality/value –While scholars have investigated the relationship between return policies (e.g. free vs fee) and profitability, no prior literature has examined the returning experience: how consumers perceive the returning process; motivations for their returns (whether returns were planned or not) and subsequent customer outcomes.
Interobserver Variability and Stiffness Measurements of Normal Lacrimal Gland in Healthy People Using Shear Wave Elastography

MATERIAL and METHODS A total of 50 participants (bilaterally 100 glands) comprising 25 females and 25 males, aged between 19 and 58 years, were included in this prospective study. For each participant, we evaluated both lacrimal glands using grayscale and shear wave elastography, and the relationships with sex, age, and body mass index were determined. All lacrimal glands were evaluated by 2 independent observers blinded to each other.
Quantification Series of Procalcitonin Decides the Conceivable Bacterial Infection among Vital Organs

Sepsis is the occurrence of infection in association with the systemic inflammatory response syndrome (SIRS). Bacterial sepsis is one of the major illnesses that shows severe symptoms which leads to organ dysfunction. Procalcitonin (PCT) the precursor of the hormone calcitonin shows a huge impact on the diagnosis of sepsis caused by the bacterial infection. Many studies have also insisted the importance of PCT as a biomarker for sepsis. As early diagnosis is the key factor to overcome the difficulties of the sepsis, PCT acts a prominent diagnostic tool to acquire the desired results. This study focused on the role of PCT in correlation with supporting parameters of the vital organs such as renal markers, liver enzymes and pancreatic enzymes to reduce the organ dysfunction and its complications.
Millimeter Wave MIMO-OFDM With Index Modulation: A Pareto Paradigm on Spectral- Energy Efficiency Trade-Off

Multiple-input multiple-output orthogonal frequency division multiplexing with index modulation (MIMO-OFDM-IM) has recently received increased attention, due to the potential advantage to balance the trade-off between spectral efficiency (SE) and energy efficiency (EE). In this paper, we investigate the application of MIMO-OFDM-IM to millimeter wave (mmWave) communication systems, where a hybrid analogy-digital (HAD) beamforming architecture is employed. Taking advantage of the Pareto-optimal beam design, we propose a feasible solution to approximately achieve a globally Pareto-optimal trade-off between SE and EE, and the collision constraints of the multi-objective optimization problem (MOP) can be solved efficiently. Correspondingly, the MOP of SE-EE trade-off can be converted into a feasible solution for energy-efficient resource usage, by finding the Pareto-optimal set (POS) towards the Pareto front. This combinatorial-oriented resource allocation approach on the SE-EE relation considers the optimal beam design and power control strategies for downlink multi-user mmWave transmission. To ease the system performance evaluation, we adopt the Poisson point process (PPP) to model the mobile data traffic, and the evolutionary algorithm is applied to speed up the search efficiency of the Pareto front. Compared with benchmarks, the experimental results collected from extensive simulations demonstrate that the proposed optimization approach is vastly superior to existing algorithms.
The Clarity and Legibility of Students’ Translation of Arabic – Indonesian Official Text

Assessment of the quality of translation is one of the important activities in translation. The translation assessment can be seen from three aspects: accuracy, clarity, and naturalness. This study aims to reveal the accuracy and fatigue of the translation results of students' Arabic-Indonesian official manuscripts, considering that researchers rarely touch the spiciness aspect than the translation's accuracy and reasonableness. This research uses the descriptive analysis method and content analysis model. The research sample is six graduate students in Arabic Language Education at the Indonesia University of Education. The data collection techniques used were observation, interviews, documentation, and questionnaires. From the results of this study, the researchers obtained several findings, namely: first, the level of mastery was very high, spread as many as eight data (44.4%), the moderate level of intelligence was spread as many as six data (33.3%), and the level of intelligence lacked as many as four data. (22.2%). Second, the level of fatigue in the translation of the official text for high levels of friction is as many as ten data (55.5%), there are five data (27.7%) for moderate fatigue, and three data (16.6%) is less tired. So, from the results of this study, it is concluded that fatigue dominates as much as ten data (55.5%) compared to the very high level of mastery where there are only eight data (44.4%).
Biological evidence and molecular modeling of a grapevine Pinot gris virus outbreak in a vineyard

Since its identification in 2003, little has been revealed about the spread of grapevine Pinot gris virus (GPGV), an emerging grapevine virus. According to studies from Italy, GPGV transmission in the vineyard can be fast but progressive over the years. To gain new insights into the spread of GPGV infections, we tested 67 grapevines in a single vineyard parcel in southern France. These vines were sampled over eight years (2013-2020) and tested for GPGV by RT-PCR using a new primer pair designed from the recently described genetic diversity of GPGV worldwide. While focusing on a portion of the samples (20), we observed a drastic increase in newly GPGV-infected vines from 2014 (5%, 1 of 20) to 2015 (80%, 16 of 20) and 2016 (90%, 18 of 20). Infected vines were scattered throughout the vineyard with no distinct pattern of distribution and some rare vines remained negative through 2020. Using all available genomic information, we performed Bayesian-based phylogeographic analyses that identified a major intra-vineyard transmission in 2014-2015. To test our model, we analyzed 47 additional grapevines and confirmed the outbreak of GPGV in 2015, validating our in-silico projection. Interestingly, some grapevines remained negative throughout the study, in spite of their close proximity to infected plants. These results raise questions on the dynamic of vector populations and environmental conditions that may be required for virus spread to occur in the vineyard.
Friction fault diagnosis and fault tolerant control for electronic throttles with sliding mode and adaptive RBF estimator

The change of throttle viscous and coulomb frictions often cause inaccuracy or malfunction in electronic throttles, and lead to degradation of reliability of vehicles with internal combustion engines. A fault detection fault tolerant control scheme is proposed in this work to tackle the problem. A nonlinear dynamic model is derived for the throttle. A disturbance observer is designed based on the model to diagnose the fault, and a sliding mode control combined with an adaptive neural network estimator is developed for fault tolerant control. The system stability is ensured after the fault occurs and the throttle position tracking is maintained by the applied Lyapunov method. A Simulink model is developed for the throttle with real physical parameters to evaluate the performance. Abrupt and incipient changes are simulated in the throttle friction torque and the simulation results show that the developed method is effective in fault diagnosis and fault tolerant control.
Effects of Interface Al2O3 Passivation Layer for High-k HfO2 on GaAs

Effects of Interface Al2O3 Passivation Layer for High-k HfO2 on GaAs Dong Chan Suh,* Young Dae Cho,* Dae-Hong Ko, Yongshik Lee, Kwun Bum Chung, and Mann-Ho Cho Department of Materials Science and Engineering, Department of Electrical and Electronics Engineering, and Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea Department of Physics, Dankook University, Cheonan 330-714, Korea
A segmented energy‐based nonlinear tracking control method for quadrotor transport system

The safety of the quadrotor transport system (QTS) is always threatened by the suspension load swing under the fuselage during flight. At the same time, the QTS is affected by uncertainties such as changes in desired position and cable length. Trajectory planning is often neglected during the development of the controller. Moreover, there are some shortcomings in the most control methods such as the maximum speed, acceleration, payload swing, and transportation efficiency of the system that cannot be theoretically guaranteed. Therefore, a nonlinear tracking control method is proposed using the segmented energy, which can make the quadrotor move to the target position quickly and smoothly, meanwhile, suppress the heavy swing of the payload. Furthermore, it is proved that the method proposed in this paper can achieve the asymptotic stability of the system equilibrium point and converge to the expected value by Lyapunov theorem and LaSalle's invariance principle. Simulation results show that the control method achieves good control performance and strong robustness against system parameter uncertainty.