Miracle-dz/UniFAR-FTUs huggingface dataset:
Analysis of true-color images from unmanned aerial vehicle to assess salinity stress on date palm

Abstract. Soils in arid countries predominantly suffer from salinity and drought related to environmental problems that can lead to crop stress and low productivity. In this study, true-color aerial images from an unmanned aerial vehicle were used to assess the effect of soil and water salinity on date palm growth. Random soil samples (n = 75) and irrigation water samples were collected from five sites and chemically analyzed. The custom algorithms were developed in ENVI® and MATLAB. ® Green leaf index (GLI) was implemented to determine crop canopy attributes. Two segmentation methods namely between-class variance and foreground pixels were used to recognize the vegetation cover from other image pixels. The image analysis demonstrated that the mean value of GLI increased as the salinity levels decreased, R = 0.96 and 0.92 for soil electrical conductivity (EC) and water EC, respectively. The percentage of area covered with vegetation was correlated to soil EC and water EC with about 70% accuracy. On the other hand, the percentage of area covered with palm trees only was used accurately to evaluate the soil EC by R2 = 0.89 and the water EC by R2 = 0.86. The findings of this research can set foundations for the development of aerial color imaging on salinity stressed date palm monitoring, providing useful information for decision makers on salinity management.
Toxicologic evaluation of ofloxacin

: Results of studies conducted to characterize local, systemic, reproductive, and mutagenic effects indicate that ofloxacin is well tolerated within reasonable multiples of the intended clinical dose. Quinolone-associated arthropathic effects characterized by blister, erosion, and increased synovial fluid occurred in rats and dogs and appeared to be both age- and dose-related. Maternal toxicity and embryotoxicity were noted, but there was no teratogenicity in rats or rabbits. There was no impairment of fertility, and no adverse effects on late fetal development, labor, delivery, lactation, neonatal viability, or growth of offspring occurred. Target-organ studies revealed no evidence of ocular toxicity in rats, nephrotoxicity in rabbits, or antigenicity or ototoxicity in guinea pigs. Overall, the toxicologic evaluation of ofloxacin has shown this compound to be a drug with a low toxicologic potential.
A New Celestial Mechanics Dynamics of Accelerated Systems

We present in this text the research carried out on the dynamic behavior of non-inertial systems, proposing new keys to better understand the mechanics of the universe. Applying the field theory to the dynamic magnitudes circumscribed to a body, our research has achieved a new conception of the coupling of these magnitudes, to better understand the behavior of solid rigid bodies, when subjected to multiple simultaneous, non-coaxial rotations. The results of the research are consistent with Einstein’s theories on rotation; however, we propose a different mechanics and complementary to classical mechanics, specifically for systems accelerated by rotations. These new concepts define the Theory of Dynamic Interactions (TDI), a new dynamic model for non-inertial systems with axial symmetry, which is based on the principles of conservation of measurable quantities: the notion of quantity, total mass and total energy. This theory deduces a general equation of motion for bodies endowed with angular momentum, when they are subjected to successive non-coaxial torques.
Circumstellar Envelopes of Stars on the Asymptotic Giant Branch:The determination of gas mass-loss rates, identification of molecules and detection of dust

Using data observed in Band 6 (211-275 GHz) and Band 7 (275-373 GHz) with the interferometer ACA (part of ALMA) from the DEATHSTAR project [1] we have analysed the CSEs of 5 AGB stars; three carbon-rich (Y Hya, U Hya and R For) and two oxygen-rich (R Hya and R Crt). The analysis was comprised of three main areas: determining the gas mass-loss rates, Ṁ , identifying molecules and investigating the presence of dust, where the analysis of Ṁ was the most extensive. Using the CO lines J = 2→ 1 and J = 3→ 2 we determined Ṁ with an equation from Ramstedt et al. 2008 [2] based on CO radiative transfer, as well as the expansion velocities of the CSEs. All calculated values of Ṁ , ranging 2.2-22 · 10−7 M yr−1 (+79%/ − 66%), were within the equations stated error margin of a factor of three[2] and consistently higher, compared to values in the literature obtained with CO radiative transfer modelling[3, 4]. Due to the equation used for Ṁ being based on single-dish telescopes, conversions for our data had to be made. Therefore, a systematic error in the conversion could account for the higher values. Furthermore, the expansion velocities were significantly higher than those in the literature[4] for all stars except Y Hya. However, the data used by us had a higher signal to noise ratio and overall lower uncertainty in comparison[5], indicating that our values may be more accurate. All molecules identified from the frequency spectra in Band 6 (215.4 217.4, 217.3-219.3, 230.2-231.2, 231.1-233.1 GHz) and Band 7 (330.3-331.3, 331.3-333.3, 342.5-344.5, 345.1-346.1 GHz), 15 in total with 11 in the carbon stars and 10 in the oxygen stars, were common for the respective spectral type except the recently (2016) discovered AlO [6], which was identified in R Crt. The spectral index, α, was calculated from the flux in continuum emission in Band 6 (224.3-241.9 GHz) and band 7 (338.2-354.0 GHz). The temperature was calculated for the stars with α ≈ 2 (Y Hya and R Crt) and agreed with the temperatures in the literature [3, 4]. For the stars with α 6= 2 (U Hya, R For and R Hya) the dust mass, MD, and the dust mass-loss rate, ṀD, was calculated with an assumed dust temperature of Tdust =100 K if the measured flux was 10% higher than expected (R For and R Hya), giving the uncertain values (due to Tdust having an exponential relation) MD = 10−5M for both stars and ṀD = 10−8M yr−1 and ṀD = 10−7M yr−1 for R For and R Hya respectively.
Value Distribution and Uniqueness of Entire Functions Related to Difference Polynomial

In this paper, we investigate the distribution of zeros of certain type of difference polynomial. At the same time we also investigate the uniqueness results when two difference products of entire functions share one value counting or ignoring multiplicities by considering that the functions share the value zero, counting multiplicities. The results of the paper improve and generalize some recent concerning results of W.L. Li and X.M. Li [Bull. Malay. Math. Sci. Soc. , 39(2016), 499-515].
Subspaces of tensors with high analytic rank

It is shown that for any subspace V⊆Fn×⋯×np of d-tensors, if dim(V)≥tnd−1, then there is subspace W⊆V of dimension at least t/(dr)−1 whose nonzero elements all have analytic rank Ωd,p(r). As an application, we generalize a result of Altman on Szemeredi's theorem with random differences.
Factors influencing knowledge sharing among academics in Bowen University, Nigeria

This study was initiated to examine the factors that influence knowledge sharing among academics in Bowen University, Nigeria. Although previous research has identified several factors that affect knowledge sharing, further research needs to be carried out to ascertain factors that affect knowledge sharing, in particular among higher academic institutions, especially in Nigeria. Due to a paucity of knowledge sharing research among faculty in Nigeria higher institutions and the fact that there is no existing framework that provides all constructs needed to interrogate knowledge sharing among academics, the study examined the influence of organisational, individual and technological factors on knowledge sharing behaviour of academics and the influence of demographic variables on how they share knowledge. Survey design guided the study and a questionnaire was used to collect data from 151 respondents. Data was analysed using descriptive statistics, Chi-square analysis and Logistic regression. Findings showed that among the organisational factors, only university policy (β= .641, p= .023) significantly influences knowledge sharing while among individual factors only trust (β= .785, p= .05) significantly influences knowledge sharing. None of the technological factors was found to influence knowledge sharing. Gender has a significant influence on knowledge sharing while academic cadre and faculty do not. Personal satisfaction, personal belief, mentoring, being knowledgeable and availability of fund/sponsorships were the other factors identified to influence knowledge sharing behaviour. The findings have extended knowledge and theory building in knowledge sharing through the conceptual framework. The study recommended that there should be a university policy on knowledge sharing which should be accompanied by rewards to motivate academics to share their knowledge.
A Lagrangian drifter for surveys of water surface roughness in streams

Water surface roughness in rivers and streams is mainly driven by flow, turbulence and riverbed conditions. Conversely, water surface roughness gives easy access to information about hydrodynamics – provided that measurements are possible at sufficient spatial-temporal resolution and accuracy. We present a novel small-size (diameter 28 mm) drifter, which detects water surface roughness through acceleration measurements while floating on the water surface. Laboratory tests revealed a good agreement between drifter-based measurements and optical characterization of surface roughness. Only very short waves with periods <0.15 s remained undetected by the drifter. Results from laboratory and field experiments show strong correlations between the drifter-measured water surface roughness, flow and shear velocities, Froude and Reynolds numbers. The small-sized drifter is particularly appropriate for reach-scale measurements in streams, where the application of other devices or methods is too large or laborious.
The ultra-diffuse dwarf galaxies NGC 1052-DF2 and 1052-DF4 are in conflict with standard cosmology

Recently van Dokkum et al. reported that the galaxy NGC 1052-DF2 (DF2) lacks dark matter if located at 20 Mpc from Earth. In contrast, DF2 is a dark-matter-dominated dwarf galaxy with a normal globular cluster population if it has a much shorter distance near 10 Mpc. However, DF2 then has a high peculiar velocity wrt. the cosmic microwave background of 886 $\rm {km\, s^{-1}}$, which differs from that of the Local Group (LG) velocity vector by 1298 $\rm {km\, s^{-1}}$ with an angle of $117 \, ^{\circ }$. Taking into account the dynamical M/L ratio, the stellar mass, half-light radius, peculiar velocity, motion relative to the LG, and the luminosities of the globular clusters, we show that the probability of finding DF2-like galaxies in the lambda cold dark matter (ΛCDM) TNG100-1 simulation is at most 1.0 × 10−4 at 11.5 Mpc and is 4.8 × 10−7 at 20.0 Mpc. At 11.5 Mpc, the peculiar velocity is in significant tension in the TNG100-1, TNG300-1, and Millennium simulations, but naturally in a Milgromian cosmology. At 20.0 Mpc, the unusual globular cluster population would challenge any cosmological model. Estimating that precise measurements of the internal velocity dispersion, stellar mass, and distance exist for 100 galaxies, DF2 is in 2. 6σ (11.5 Mpc) and 4. 1σ (20.0 Mpc) tension with standard cosmology. Adopting the former distance for DF2 and assuming that NGC 1052-DF4 is at 20.0 Mpc, the existence of both is in tension at ≥4.8σ with the ΛCDM model. If both galaxies are at 20.0 Mpc the ΛCDM cosmology has to be rejected by ≥5. 8σ.
Orbit determination of the Kylmälä fireball

We study observations of a fireball that occurred in Kylmälä, Finland with the aim of determining its Keplerian orbital elements. The fb_entry program is used to determine the fireball’s trajectory based on the observations. The orbit is then determined using this trajectory as the input parameters with the Meteor Toolkit software. We successfully determine the fireball’s orbit, which appears to be an ordinary near-Earth asteroid orbit. We find that the fireball’s semi-major axis is 1.94 AU, which corresponds to the inner edge of the main asteroid belt and gives cause to suspect that the object originated in the main belt and evolved into a NEA due to the effect of the secular ν6 resonance. Several related bodies were also identified.
Struktur Populasi Dan Potensi Kecamatan Benai Di Kabupaten Kuantan Singingi Untuk Pengembangan Sapi Potong

Penelitian ini bertujuan untuk mengetahui struktur populasi dan potensi Kapasitas Peningkatan Populasi Ternak Ruminansia (KPPTR) sapi potong di Kecamatan Benai. Penelitian dilakukan dengan metode survei secara purposive sampling. Analisa data dilakukan secara deskriptif. Total sampel yang digunakan adalah 137 peternak. Parameter yang diukur adalah struktur populasi sapi potong, nilai natural increase, Kapasitas Peningkatan Populasi Ternak Ruminansia (ST) berdasarkan sumber daya alam (KPPTR SL), Kapasitas Peningkatan Populasi Ternak Ruminansia (ST) berdasarkan kepala keluarga petani peternak (KPPTR KK). Hasil penelitian menunjukkan bahwa Kecamatan Benai dapat dijadikan daerah sumber bibit karena didominasi induk betina dengan jumlah 52,37% dan ternak dara dengan jumlah 19,34%. Natural increase (Pertambahan alami) ternak di Kecamatan Benai hanya 15,45%. Nilai Kapasitas Peningkatan Populasi Ternak Ruminansia Berdasarkan Satuan Lahan (KPPTR SL), Kecamatan Benai adalah 7 ekor/KK ternak sapi dewasa dengan berat badan rata-rata 250 kg atau 22.989 ST.
Workload evaluation of industrial work: existing methods and practical applications

The aim of this paper is to provide a study of the existing methods and devices to be put into practice for the workplace analysis in terms of workload evaluation. In fact, the design of the workplace can impact on the physical fatigue and discomfort perceived by workers, resulting in the reduction of work quality and the increasing of tasks time. In addition, the repetition of activities which imply awkward postures with considerable impact on fatigue can lead in a long-term to a higher probability of injuries and to the reduction of workers capability in performing the activity. In this paper, we put in evidence how existing methods for workload evaluation can be applied both during the pre-design stage and for the improvement of the existing workplaces. The value of this work is to provide companies of an overall view of all the existing workload evaluations, developed formulations and devices to be used for predicting the impact of the tasks workload on operators and consequently on the system performance. This knowledge helps decision-makers in determining the most effective design-level decisions. Finally, some practical examples of pushing, pulling and carrying activities evaluation are given putting in evidence the output that such devices can give to a practitioner.
Exploring the Effects of Teacher Job Satisfaction on Teaching Effectiveness: Using 'Teaching Quality Assurance' as the Mediator

The purpose of this study is to verify the effects of job satisfaction of lecturers or higher-level teaching staff on teaching effectiveness at three particular Taiwan-based technological and vocational colleges, with “teaching quality assurance” being the mediator. This study interviewed lecturers or teachers holding higher positions at three particular Taiwan-based technological and vocational colleges, selected by way of simple random sampling. Linear Structural Equation Modeling (SEM) was employed to verify the goodness-of-fit of the overall model, structural model and measurement model, followed by an examination of mediating effects using the Sobel Test, Bootstrapping and the Mackinnon PRODCLIN 2 program. The research results suggest that, at these particular Taiwan-based technological and vocational colleges: (1) teacher job satisfaction has a positively significant effect on teaching quality assurance; (2) teaching quality assurance has a positively significant effect on teaching effectiveness; and (3) teacher job satisfaction has a positively significant effect on teaching effectiveness. Apparently, teaching quality assurance has no more than a partial mediating effect and, as this study implies, is not the sole silver bullet for increased teaching effectiveness, which actually can be achieved by bolstering the teachers’ job satisfaction.
Adaptive cooperative tracking control of uncertain nonlinear multiagent systems with uncertain Markov switching communication graphs

This paper deals with the cooperative tracking problem of nonlinear multiagent systems. Compared with the existing works, both the uncertainties in model and switching topology are considered. Two control laws, the adaptive distributed controller based on state information and the adaptive distributed controller based on output information, are proposed using the neural networks. The advantage of the proposed controller is that we no longer require the exact knowledge of follower agents' parameters and the precise switching signal of communication topology by taking advantages of neural networks approximation and the property of transition probabilities. It is proved that all followers can track the leader with permitted bounded errors under the proposed controller. An illustration is given to testify the efficacy of the proposed approach.
Multiagent Approach to Fuzzy-Linguistic Knowledge Integration

The paper aims to give at least a partial answer to an urgent need for knowledge processing systems equipped with semantic capabilities. One of the crucial goals is to reflect inner computational models and numerical data outside of the system by presenting linguistic statements easily understood by a non-expert user. The paper follows a motivational scenario and presents a layered approach to knowledge integration. The fundamental rationale behind the proposed approach is that a degree of inconsistency of the whole body of knowledge should be incorporated into the formed summary and conveyed to the external user of the system. The paper deals with a practically important problem of processing modal epistemic statements about an object exhibiting some set of fuzzy properties. The statements represent distributed knowledge of some agent population and are represented on the level of a semi-natural language. In particular, the paper describes an approach to two-level fuzzy-linguistic knowledge integration based on the consensus-theory and clustering methods. In particular, it discusses the difference between the in-cluster level and the cross-cluster level. While this paper considers an environment limited to a single object with multiple properties, it is directly extendable to environments with multiple objects. The reduction is purely technical as it allows for a simplification of a notation and presented descriptions.
Neutral stability curves of compressible Görtler flow generated by low-frequency free-stream vortical disturbances

Pre-transitional compressible boundary layers perturbed by low-frequency free-stream vortical disturbances and flowing over plates with streamwise-concave curvature are studied via matched asymptotic expansions and numerically. The Mach number, the Görtler number and the frequency of the free-stream disturbance are varied to obtain the neutral stability curves, i.e. curves in the space of the parameters that distinguish spatially growing from spatially decaying perturbations. The receptivity approach is used to calculate the evolution of Klebanoff modes, highly oblique Tollmien–Schlichting waves influenced by the concave curvature of the wall, and Görtler vortices. The Klebanoff modes always evolve from the leading edge, the Görtler vortices dominate when the influence of the curvature becomes significant and the Tollmien–Schlichting waves may precede the Görtler vortices for moderate Görtler numbers. For relatively high frequencies the triple-deck formalism allows us to confirm the numerical result of the negligible influence of the curvature on the Tollmien–Schlichting waves when the Görtler number is an order-one quantity. Experimental data for compressible Görtler flows are mapped onto our neutral-curve graphs and earlier theoretical results are compared with our predictions.
Polarimetric Calibration of RISAT-1 Compact-Pol Data

India's radar imaging satellite RISAT-1 was the first spaceborne SAR platform operated in the compact polarimetric (CP) mode, which posed several advantages compared to the commonly used quad-pol system architecture in terms of design complexity and data quality. But, to make use of the advantages offered by the compact polarimetry mode, the acquired datasets should be free from the system induced polarimetric distortions, which include the channel imbalances, phase bias, and crosstalk between the channels. In addition to these system induced errors, the ionosphere also induces polarimetric distortion to the datasets in terms of Faraday rotation. For accurate ground target characterization using the CP datasets, the polarimetric distortions should be estimated and minimized. This article focuses on the CP calibration of the RISAT-1 dataset using trihedral and dihedral corner reflectors deployed at the study area. The Cloude CP decomposition technique is used to assess the ground target characterization quality of the dataset before and after polarimetric calibration.
What Is Required to Optimise Professional Development Opportunities for Academic Staff in a Specific College in the Further Education Sector

The main aim of this research was to identify what was required to optimise professional development for the academic staff of Liberties College, a college in the further education sector. This research was a case study, focusing on the micro, one case on one site, with the emphasis on understanding the unity and the wholeness of this particular case. The theoretical perspective applied therefore, was constructionist and the research methods interpretive in design. The research design was mainly qualitative though there was also a quantitative element in part of the questionnaire which was followed up by semi-structured interviews. The relevant literature was consulted and reviewed in order to establish a framework for the research and to inform the validity of the findings. The findings from the questionnaire show the identified continuing professional development requirements, needs and interests for working in the classroom, for working in the institution and for the self. The follow-up interviews provided more precise detail for some of the questionnaire responses. The recommendations from the study include suggestions that emanate from the findings and which have been contextualised to the culture and practice in Liberties College.
FAKTOR-FAKTOR YANG MEMPENGARUHI PRODUKSI TANAMAN PADI GOGO DI KABUPATEN MOROWALI

This study aims to determine and analyze the factors that affect the yield of gogo rice plants in Morowali District, Central Sulawesi Province. This research was conducted in Morowali District, Central Sulawesi Province. The method used in sampling in this study is simple randomly selected. In this simple random technique each member of the population has the same opportunity to become a sample. This study analyzes the function of results using multiple linear regression analysis. Variable identification is done by listing production factors that are thought to have an effect on the process of upland rice yields. On the factors of production the variables that are affected (dependent variable) are results. While the variables that are variable (independent) affect are the area of ​​land, seeds, fertilizers, pesticides and labor. The results showed that the factors of production of land area, seeds, labor, fertilizers, and pesticides jointly influence the yield of upland rice. Variable land area partially has a significant effect on upland rice yields, with the highest average yield obtained in land area of ​​≤ 0.50 ha (average 3.76 t / ha). Partial variables of seed, labor, fertilizer, and pesticide did not significantly influence the upland rice yield respectively.