Miracle-dz/UniFAR-FTUs huggingface dataset:
VLF/ELF Noise Bursts Observed at MAITRI (Indian Antarctic Station)

Observation of VLF/ELF emissions at high latitude is attributed to the lightning, thunderstorm activities and power line radiations solar flares. At high latitudes contribution due to solar particle fluxes becomes important for VLF/ELF burst which are observed just after Solar Spike and Solar Noise Storm. The electrodynamics state of the high-latitude ionosphere is controlled by several geophysical processes The ELF/VLF bursts are observed starting from just above the 1300 Hz up to 8 kHz, this burst starts in ELF region and disappears in VLF band. These burst are observed geographically at the locations that are geomagnetically conjugate points e.g. burst recorded at South Pole is generated due to solar wind interaction and the precipitating particles geomagnetically conjugate in the Northern Pole Ionosphere-Magnetosphere.
FLAME RETARDANCY OF BIO-BASED THERMOPLASTIC COMPOSITES AND NANOCOMPOSITES

This paper presents several examples of study dealing with the flame retardancy of bio-based composites. Several approaches were followed: the use of intumescent systems, of the “heat sink” concept as well as the nanocomposites approach. It was shown that flame retardant properties of interest can be achieved using those approaches in bio-based composites.
DINÁMICA DE LA ACUMULACIÓN DE POTASIO POR TRIGO CULTIVADO EN DIFERENTES AMBIENTES POTASSIUM ACCUMULATION DYNAMICS IN WHEAT PLANTS GROWING IN DIFFERENT ENVIRONMENTS

S ON TROPICAL AGRICULTURE, ABSTRACTS ON RURAL DEVELOPMENT IN THE TROPICS, AGRICULTURAL BIOLOGY, CAB ABSTRACTS, ZOOLOGICAL RECORD y PERIODICA; puede consultarse a través de AGRIS (FAO), AGRICOLA (EUA) y BIOSIS (HOLANDA). Toda contribución es sometida a un estricto arbitraje. Se distribuye, por suscripción, a 500 investigadores del país y del extranjero, y por donación e intercambio a más de 200 instituciones nacionales e internacionales.
Mis-specified Forecasts and Myopia in an Estimated New Keynesian Model

The paper considers a New Keynesian framework in which agents form expectations based on a combination of mis-specified forecasts and myopia. The proposed expectations formation process is found to be consistent with all three empirical facts on consensus inflation forecasts, namely, that forecasters under-react to ex-ante forecast revisions, that forecasters over-react to recent events, and that the response of forecast errors to a shock initially under-shoots but then over-shoots. The paper then derives the general equilibrium solution consistent with the proposed expectations formation process and estimates the model with likelihood-based Bayesian methods, yielding three novel results: (i) The data strongly prefer the combination of autoregressive mis-specified forecasting rules and myopia over other alternatives; (ii) The best fitting expectations formation process for both households and firms is characterized by high degrees of myopia and simple AR(1) forecasting rules; (iii) Frictions such as habit in consumption, which are typically necessary for models with Full-information Rational Expectations, are significantly less important, because the proposed expectations generate substantial internal persistence and amplification to exogenous shocks. Simulated inflation expectations data from the estimated general equilibrium model reflect the three empirical facts on forecasting data.
Evaluation of wheat varieties to salt stress (NaCl) for seed germination and early seedling growth under laboratory conditions

Salinity tolerance during germination and early seedling growth was evaluated of four wheat varieties under four salinity (NaCl) levels that included Control (distilled water) 0, 9, 12 and 16 dSm. The seeds of four wheat varieties including Imdad-2005, Mahran-89, TJ-83 and TD1 were sown under various NaCl levels in Petri dishes. The trial was performed at Seed Testing Laboratory, Department of Agronomy, Sindh Agriculture University, Tandojam Pakistan, following completely randomized design with three replications. The results showed that different salt stress (NaCl) levels had significant effects on germination (%), shoot and root length (cm), shoot and root water content (%), shoot and root fresh weight (g) and shoot and root dry weight (g) of wheat varieties. Among varieties, Imdad-2005 showed tolerance against salt stress for all parameters as compared to other varieties. The Imdad-2005 produced maximum mean germination (93.7%), shoot and root length (14.8 cm and 9.3 cm), shoot and root RWC (80.1 % and 86.2%), shoot and root fresh weight (2.3 g and 1.5 g) and heaviest shoot and root dry weight (0.28 g and 0.13 g). However, for NaCl levels, maximum germination (96.2 %), shoot and root length (15.5 cm, 10.7 cm), shoot and root water content (86.4 %, 87.0%), shoot and root fresh weight (2.3 and 1.5 g) and highest shoot and root dry weight (0.28 g and 0.13 g) was noted at control, where seeds were on sown by using distilled water.
Novitski’s Distal shift in Paracentric Inversion Evolution

In Drosophila pseudoobscura younger chromosomal inversions tend to be found distal to older inversions. By examining phylogenetic series of overlapping inversions for 134 gene arrangements of 13 chromosomes this pattern was extended to five additional Drosophila species. This distinct pattern arose repeatedly and independently in all six species and likely reflects an underlying principle of chromosome evolution. In this study it is illustrated how transmission of distal inversions is always favored in female meiosis when crossing over in homosequential regions of overlapping inversions generates asymmetric dyads. This cytogenetic mechanism for female meiotic drive is described in detail and advanced as an explanation for the distal shift in phylogenetic series of overlapping inversions as well as several better known patterns in the evolution of serially inverted chromosomes.
Care Burden Correlates with Depression among Informal Caregivers of Stroke Patients: A Cross Sectional Study in Lagos, Nigeria

Background: Many stroke survivors receive non-professional ca re from relatives. While these informal caregivers cope with stroke impact on their relativ es, increasing demands placed on them result in car egiver burden and depression. Objectives: We aimed to determine the relationship between the burden of care and depression in informal caregivers of stroke survivors. Methodology: This cross-sectional study recruited 311 stroke car egivers by systematic random sampling, at Lagos University Teaching Hospital in Nigeria, over six months. A structured questionnaire incorporati ng the Zarit Burden Interview and Patient Health Questionn aire-9 was used to obtain information on burden of care and depression, besides socio-demographics. Results: Females constituted 57.6% of the informal caregiver s, whereas males accounted for 42.4%. 75.2% of the caregivers had significant level of burden, and 59.5% had depression, with demonstrable associatio n between the two conditions ( χ = 99.3, p < 0.001). There was a positive correlati on between the scores for caregivers’ burden and depression (r 2 = 0.75, p < 0.001). The severity of caregiver burd en correlated positively with the severity of depression (r 2 = 0.68, p < 0.001). Conclusion: Burden of care correlates with depression in infor mal caregivers of stroke survivors, with the severity of each increasing with an increase in the other. Presence of burden of care in a stroke care giver warrants a search for co-morbid depression, and vic e ersa. Stroke rehabilitation efforts should incor porate promotion of caregiver wellness.
Chlorovirus and myovirus diversity in permafrost thaw ponds

Permafrost thaw ponds occur in high abundance across the northern landscape of Canada and are sites of intense microbial activity, resulting in carbon dioxide and methane emissions to the atmosphere. In this study, we focused on viruses as largely unstudied agents of top-down control in these high-latitude microbial ecosystems. Specifically, we compared the diversity of myovirus, chlorovirus and host microbial communities in an organic soil palsa valley pond and a mineral soil lithalsa valley pond. These 2 subarctic permafrost landscapes are both common in northern Quebec, Canada. Sequence analysis of ribosomal small subunit RNA genes showed that the community structure of bacteria and microbial eukaryotes differed significantly between the 2 ponds, which both differed from microbial communities in a rock-basin lake (whose formation was not related to permafrost thawing and which we used as a reference pond) in the same region. The viral assemblages included 439 OTUs in the uncultured Myoviridae category and 41 OTUs in the family Phycodnaviridae. Phylogenetic analysis of the latter based on an amino acid sequence alignment revealed a single large clade related to chloroviruses, consistent with the abundant presence of chlorophytes in these waters. As there was for the bacterial and eukaryotic communities, there were also significant differences in the community structure of these viral groups among the 3 ponds. These results suggest that host community composition is influenced by environmental filtering, which in turn contributes to driving viral diversity across landscape types.
OKVIS 2.0 for the FPV Drone Racing VIO Competition 2020

In the following, the Visual-Inertial SLAM approach OKVIS 2.0 is brieﬂy described. It was used to compute the trajectories submitted to the 2020 FPV Drone Racing Competition. In summary, the estimator was designed as a sliding-window optimisation scheme, where error terms from the Inertial Measurement Unit (IMU) as well as visual reprojection errors are jointly minimised, along with relative pose error terms derived from marginalisation of old observations. The method further supports visual place recognition and respective loop-closure optimisation, where the edges of the pose graph correspond to the previously mentioned relative pose errors. Furthermore, the estimator makes use of online extrinsics estimation, which was found particularly useful in the setting at hand. The implementation was designed to be deployed in real-time on a state-of-the art mobile processor. Therefore, causal trajectories are reported, i.e. for the computation of any given state, no information from future measurements are taken into account – noting that the framework naturally extends to full trajectory smoothing including a full expansion into a visual-inertial Bundle Adjustment problem.
Traditional and Information Technology Anti-Corruption Strategies for Curbing the Public Sector Corruption in Developing Economies of Sub-Saharan Africa: A Systematic Literature Review

The pervasiveness of public sector corruption has been a major concern by successive governments and their citizenry. In order to curb such corruption, previous studies have focused on the anti-corruption strategies adopted by governments in isolation, but little or no study has focused on the interactions of the anti-corruption strategies. Using the concept-centric approach, we reviewed 91 studies systematically to understand the trends of government anti-corruption strategies. From the synthesized studies, we identified three dominant themes of anti-corruption strategies and their associated concepts. In addition, we also identified one dimension that captures information technology (IT) as a vehicle that enhances corrupt practices in the public sector. The identified themes include traditional, technological, transparency, and accountability anti-corruption strategies. We leveraged the identified themes and their associated concepts to develop a conceptual model that could explain the trends of anti-corruption strategies for curbing the public sector corruption. Our findings suggest that there are things we still need to know, particularly in the case of IT anti-corruption strategies that have been misused for corrupt purposes, especially in the context of e-government systems’ adoption in the public sectors as a new stream of IS research.
Characterizing the Landscape of COVID-19 Themed Cyberattacks and Defenses

COVID-19 (Coronavirus) hit the global society and economy with a big surprise. In particular, work-from-home has become a new norm for employees. Despite the fact that COVID-19 can equally attack innocent people and cyber criminals, it is ironic to see surges in cyberattacks leveraging COVID-19 as a theme, dubbed COVID-19 themed cyberattacks or COVID-19 attacks for short, which represent a new phenomenon that has yet to be systematically understood. In this paper, we make a first step towards fully characterizing the landscape of these attacks, including their sophistication via the Cyber Kill Chain model. We also explore the solution space of defenses against these attacks.
THE INFLUENCE OF SALIN STRESS ON THE SOIL CHEMICAL COMPOSITION AND THE PRODUCTION OF PLANTS TO SOME BEAN GENOTYPES FROM NORTH-EASTERN ROMANIA

Among environmental stressors, salinity remains the main factor, which questions the future of agriculture. At the same time, the resistance to this factor is determined by the morpho-anatomic and physiological properties of the plants, which ensure their tolerance to the high salt concentration.Considering that beans are a salt-sensitive species, this study has analyzed the effect of excess NaCl on soil chemical composition and plant production to 7 bean populations collected from saline soils in North-East Romania.The experiment was conducted under green conditions at the USAMV Iaşi Fitotronduring in period 2017-2018, the plants being exposed to saline stress for 30 days with concentrations of 100 mM and 200 mM NaCl.The experience was bifactorial, organized as randomized blocks with three rehearsals. The overall objective of the study is to identify local populations of beans tolerant to this stress factor. In this regard, after 30 days of treatment, the results showed a significant effect of salinity on the studied genotypes. Changing neutral alkaline pH and high EC values compared to the control group when applied to the two treatments reduced cell membrane permeability by inhibiting water absorption in some of the local populations studied. The results obtained show that the Blăgeşti 2 and Blăgeşti 4 genotypes recorded the highest productions to all experimental variants, which confirms the resistance of these populations to saline stress.The lowest values were recorded at the local population of Moșna, with the specification that the variant treated with 200mM NaCl did not fructify at all. The data was analyzed by calculating the correlation coefficient with Microsoft Excel.
An investigation on the development of a smart cutting tool for precision machining using SAW-based force measurement

With the rapid development of high precision machining, there is a need to monitor certain parameters in the machining processes so as to detect tool wear, to optimize cutting parameters, and to render the machining process some level of smartness and intelligence. Over the last decade or so, sensors based on surface acoustic waves (SAW) form an important part of the sensor family, these have seen diverse applications ranging from gas and vapour detection to strain measurement. In this paper, the use of SAW sensors for potential application to precision machining processes is presented. The working principle for such an application has been demonstrated through FEA simulation in order to detect its modal frequency and modal shape by modal analysis. For the experimental implementation, two SAW strain sensors are mounted onto two Al plates bolted on top and bottom of the cutting tool shank respectively. Moreover, the two SAW sensors are formed into a half-bridge measurement configuration in order to minimise any environmental perturbations caused by temperature effects, the torque effect, and the RF telemetry link. Furthermore, the two SAW sensors have been calibrated to measure the cutting force in a real machining environment.
Inherent and coerced gradability

In this paper I provide an analysis of the English hedges sorta and kinda, which show a cross-categorial distribution and can induce gradability with nongradable predicates. I analyze sorta and kinda as degree words and provide a formal analysis of their behavior. With gradable predicates, these exhibit behavior similar to other degree words such as very, but with non-gradable predicates, a mismatch of logical type forces the predicate to typeshift to a gradable type, making available a degree argument that represents imprecision. The analysis is developed using Morzycki’s (2011) implementation of Lasersohnian pragmatic halos (Lasersohn 1999), and presents a case study in how gradability may be coerced from nongradable expressions.
INDOOR AIR QUALITY MONITORING

A novel method for indoor air quality monitoring is presented in this paper. It is based on the network of smart sensors permanently connected to the cloud. The prototype system, consisting of 10 smart sensors is evaluated in laboratory and real use. Each smart sensor was able to measure air temperature, relative humidity, particulate matter concentration, and carbon dioxide concentration. The cloud-based architecture of the system is explained, followed by the calibration method and real scenario results. The system proved to be suitable for real-time monitoring of indoor air quality parameters for large buildings.
Micro-fiber coupled superconducting nanowire single-photon detector for near infrared wavelengths

State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology (SIMIT), Chinese Academy of Sciences (CAS), Shanghai 200050, China1 Center for ExcelleNce in Superconducting Electronics (CENSE), Chinese Academy of Sciences (CAS), Shanghai 200050, China2 State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou 310027, China3
Modeling discontinuous gas flow for remediation in heterogeneous media

During the remediation of contaminated soils and groundwater, gases can be trapped in the subsurface. When injected or produced at slow rates in coarse saturated media, discontinuous (bubbly) gas flow can occur, which is characterized by disconnected gas clusters which can fragment, mobilize and coalesce during buoyancy-driven migration. It is thought that discontinuous gas flow is advantageous during remediation because it has a higher gas-liquid interfacial area than continuous channels, thereby maximizing mass transfer in or out of the gas phase and increasing remediation efficiency. However, heterogeneities can cause pooling and lateral spreading of the gas, affecting its distribution and availability for mass transfer. In this study, a macroscopic invasion percolation model was used to simulate discontinuous gas flow in the presence of heterogeneities. It was found that heterogeneities can decrease relative mass transfer rates under conditions of slower flow, but can increase relative mass transfer rates under conditions of faster flow. RÉSUMÉ Pendant la décontamination d’un sol et de l’eau souterraine, il est possible que des gaz soient emprisonnés sous la surface. Lorsqu’injectée ou produit à faible taux dans un média saturé grossier, un flot discontinu (bulle) de gaz se produit, lequel est caractérisé par des grappes de gaz discontinues pouvant se fragmenter, se mobiliser ou s’agglutiner alors qu’ils entreprennent une migration dû à leur flottaison. Il est pensé qu’un flot discontinu de gaz est avantageux durant la réhabilitation d’un sol parce qu’il possède une plus grande aire à l’interface gaz-liquide qu’un flot continu. Ainsi, un transfère de masse est maximal entrant ou sortant de la phase gazeuse augmentant ainsi l’efficacité de réhabilitation. Cependant, l’hétérogénéité du sol peut causer des accumulations ou un écoulement latéral du gaz affectant ainsi sa subséquente distribution et sa disponibilité pour le transfère de masse. Dans cette étude, un modèle d’invasion par percolation macroscopique fut utilisé pour simuler l’écoulement d’un flot gazeux discontinu dans un milieu poreux saturé. Il fut trouvé qu’avec un faible flot, les hétérogénéités peuvent réduire le taux relatif du transfert de masse et qu’avec un important flot, les hétérogénéités peuvent accroître le taux relatif du transfert de masse.
An Open Problem: Energy Data Super-Resolution

In this notes paper, we present an open problem to the Buildsys community: energy data super-resolution, referring to the task of estimating the power consumption of a home at a higher resolution given the low-resolution power consumption. Super-resolution is especially useful when the smart meters collect data at a very low-sampling rate owing to a plethora of issues such as bandwidth, pricing, old hardware, among others. The problem is motivated by the success of image super resolution in the computer vision community. In this paper, we formally introduce the problem and present baseline methods and the algorithms we used to "solve" this problem. We evaluate the performance of the algorithms on a real-world dataset and discuss the results. We also discuss what makes this problem hard and why a trivial baseline is hard to beat.
Survey about the Accuracy of Wearable devices as Heart Rate Monitor, Fitness Tracker and Sleep Assessment.

—Mobile health applications have become an integral part of human life and is useful in continuously monitoring various health related parameters. These applications are installed in the smart phones to keep track of the health conditions. Smart phones need various sensing devices and accessories and cannot work on its own to perform the monitoring activity. The sensing devices are extra attachments and are tedious to carry along when the user moves from one place to another. This issue can be resolved by using wearable devices. The wearable devices are designed in a way to accommodate all the sensing mechanism and at the same time are comfortable for the user to move along. These devices are being widely accepted by the users due to their cheap price and effectiveness. This work presents the details of the wearable devices and its effects on the mobile health applications. The paper explained the functioning of the wearable devices which are divided into three main categories heart rate monitoring, Fitness tracker and sleep assessments. How these devices are working are explained to have a full idea about the accuracy of the wearable devices when compared to other similar products. There should be more studies about how accurate these devices to get beneﬁt of these wearable devices in mHealth system as a way for enhancing the user health life.