Miracle-dz/UniFAR-FTUs huggingface dataset:
Glioma grade detection using grasshopper optimization algorithm‐optimized machine learning methods: The Cancer Imaging Archive study

Detection of brain tumor's grade is a very important task in treatment plan design which was done using invasive methods such as pathological examination. This examination needs resection procedure and resulted in pain, hemorrhage and infection. The aim of this study is to provide an automated non‐invasive method for estimation of brain tumor's grade using Magnetic Resonance Images (MRI). After pre‐processing, using Fuzzy C‐Means (FCM) segmentation method, tumor region was extracted from post‐processed images. In feature extraction, texture, Local Binary Pattern (LBP) and fractal‐based features were extracted using Matlab software. Then using Grasshopper Optimization Algorithm (GOA), parameters of three different classification methods including Random Forest (RF), K‐Nearest Neighbor (KNN) and Support Vector Machine (SVM) were optimized. Finally, performance of three applied classifiers before and after optimization were compared. The results showed that the random forest with accuracy of 99.09% has achieved better performance comparing other classification methods.
Probing many-body interactions in monolayer transition-metal dichalcogenides

Many-body interactions in monolayer transition-metal dichalcogenides are strongly affected by their unique band structure. We study these interactions by measuring the energy shift of neutral excitons (bound electron-hole pairs) in gated WSe2 and MoSe2. The gate-induced charge density screens the electron-hole Coulomb attraction and renormalizes the bandgap energy via exchange and correlation interactions. We compute the energy shift of neutral excitons as a function of charge density with the Bethe-Salpeter equation. The random-phase approximation gives a good experimental agreement, and we find that both disorder and temperature suppress screening. The disorder localizes the gate-induced charge, while increasing the temperature excites the free charge. Screening of the Coulomb attraction between the photoexcited electron-hole pairs is less effective in both cases. We resolve the contributions of the bandgap renormalization and screened potential by comparing the results of WSe2 and MoSe2, due to their distinct spin-split conduction bands.
Factors Influencing the Extent of the Ethical Codes: Evidence from Slovakia

Even though formalization of ethical principles is a must in today’s business, research and evidence in the Slovak conditions remain scarce. Yet, creating an ethical business climate and especially the formalization of ethics through codes of ethics incorporated in corporate standards is a particularly interesting phenomenon in the conditions of transit economies due to the significant role of multinationals in this process. Therefore, the purpose of this study was to examine main factors influencing the extent of ethical codes in 225 subsidiaries of multinational companies operating in Slovakia. The conducted questionnaire study containing items focused on area and extent of ethical code, number of employees, economic performance, regional and industrial scope, ownership structure, and nationality of executive director was used as a tool for data collection. Factor analysis was processed to identify the interdependencies between observed variables and to find the latent variables. Further, the Kruskal–Wallis test was applied to identify the differences among the variables along with the Bonferroni correction test, which specified the items between which the significant difference occurred. The following findings emerged. First, companies with lower extent of ethical code use general phrases. When they want to specialize on any ethics problems, extent must be wider. Second, companies with a lower number of employees do not need extensive ethical code due to clear rules with which they are familiar in a direct way by owners. In multinational companies, the communication of ethical rules is realized via ethical codes with specific purposes because the direct way is impossible. Third, companies with foreign ownership used different managerial approaches, and therefore ethical codes differ in extent and content.
Enable digital transformation: entrepreneurial leadership, ambidextrous learning and organisational performance

ABSTRACT Although digital transformation (DT) is gaining importance, we know little about the challenge of ambidextrous learning in that context or how to manage the challenge. To address this gap, this study explores the relationships among entrepreneurial leadership, ambidextrous learning, and organisational performance in DT, and the influence of non-technical digital context (i.e. change in operation) on these relationships. Using multi-source data from a sample of 73 CEOs/entrepreneurs and 377 middle managers in China, we find that in DT: (1) ambidextrous learning is positively related to organisational performance; (2) entrepreneurial leadership has a positive impact on ambidextrous learning; (3) ambidextrous learning mediates the relationship between entrepreneurial leadership and organisational performance. Our results further reveal that change in operation strengthens the effect of ambidextrous learning on organisational performance while it has no significant impact on the relationship between entrepreneurial leadership and ambidextrous learning. Finally, we discuss how our ﬁndings extend the studies of entrepreneurial leadership and ambidextrous learning and provide implications for DT practices.
The Effect of Sudden Rise in Salinity on Survival Rates and Salinity Tolerance Ability of Ctenopharyngodon idella

This study aimed to identify the extent of the effect of sudden rise in salinity on survival rates of Ctenopharyngodon idella and determine the lethal concentration (LC50) that kills half of the number of fish. The fish were suddenly exposed to lethal concentrations (LC50 values) of: 4, 8, 12, and 16 g / l at a weight of 31.4 ± 2.2 g, as well as hypertonic water at the rate of (0.1 g of LC50), which was considered as a controlling sample. The (LC50) were prepared by adding a known weight of dried sea salt in a liter of chlorine-free hypertonic water until the required lethal concentrations (LC50) were reached. The results of the survival rates experiment showed that the survival rate of Ctenopharyngodon idella reached 90%, 20% and 0% at the lethal concentration (LC50) of 8, 12 and 16 g /I respectively, while the survival rate was 100% in both hypertonic water and the lethal concentration (LC50) of 4 g / l. The results of the experiment to determine the lethal concentration (LC50) that kills half of the number of fish also showed that the LC50 in Ctenopharyngodon idella reached 9.68 g / l during 96 hours of sudden exposure to LC50 at the rate of 0.1, 4, 8, 12 and 16 g / l. During the experiment, Original Research Article Alkhshali and Alhilali; AJFAR, 10(4): 58-63, 2020; Article no.AJFAR. 62164 59 the fish were fed on food ration containing 32% protein, at the rafe of 3% of the weight of fishs' body.
The effect of electrosteric interactions on the effective charge of thermoresponsive ionic microgels: Theory and experiments

In this work, the influence of counterion valence and salt concentration on the effective charge of two types of thermoresponsive ionic microgel particles has been studied. The effective charge of the microgel at different swelling states has been experimentally determined from electrophoretic mobility measurements by solving the electrokinetic equations of the solvent for a single polyelectrolyte brush in the presence of an electric field, taking into account the friction of the solvent inside the polymer network. The experimental results have been compared to those obtained by means of the Ornstein‐Zernike integral formalism within the HNC relation. Results show that microgel bare charge is screened by the combined effect of counterion condensation and permeation inside the microgel particle. In addition to the electrostatic interaction, the steric exclusion exerted by the polymer plays an important role on the local ionic concentrations, especially for shrunken configurations. This steric term is responsible for the strong increase of the microgel effective charge experimentally observed when particles shrink for temperatures above the lower critical solution temperature. We also observe that, in the internal region of the microgel, charge electroneutrality is fulfilled, so the effective charge mainly arises from the region close to the microgel surface. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 2038–2049.
Linking Financial Resources Ability and R & D Resources on New Product Performance. The Mediating role of Innovation Orientation and Competitive Position

This study aims to test empirical research on the effect of financial resource ability, research and development (R & D) on innovation orientation and competitive position. This study also examines the critical mediating role of innovation orientation and competitive position to achieving new products performance (NPP). This study used a quantitative research approach by comparing data from service industry and manufacture industry in Indonesia included in Indonesian-State-Ownership companies. The analysis unit in this study used middle managers and top managers who responsible for managing divisions within the Indonesian-State-Ownership companies. The number of respondents studied in this study was 287 sample. The purposive sampling technique was used in taking the research sample. This study indicated that financial resources abilities, research and development (R & D) abilities positive effect on innovation orientation and competitive position. This study also testing the importance role of innovation orientation and a competitive position to enhancing new products performance (NPP).
The influence of disease-inducing agents other than Dermatophilus congolensis on the severity of bovine dermatophilosis

This study was designed to assess the influence of disease-inducing agents other than Dermatophilus congolensis on the incidence of bovine dermatophilosis from cattle farms in Federal University of Agriculture, Abeokuta and Olabisi Onabanjo University, Ogun State and also from Akinyele cattle market in Oyo State. Skin scrapings collected from cattle with typical lesions of dermatophilosis were examined for the presence of bacteria, fungi and ectoparasites. Out of the 57 animals examined with typical skin lesions of dermatophilosis, Dermatophilus congolensis organism was cultured from 23 cases. Other bacterial organisms identified included Staphylococcus aureus (28 cases), Staphylococcus albus (35 cases), Bacillus mycoides (14 cases), Bacillus cereus (1 case), haemolytic Streptococcus (5 cases) Pseudomonas aeruginosa (13 cases), Escherichia coli (16 cases), Proteus spp (4 cases) and Norcardia spp (5 cases). Ticks (mostly Amblyomma variegatum) were seen in all the 57 animals while Demodex bovis, Sarcoptes scabiei var bovis and lice were seen in 15, 4 and 8 cases respectively. It was inferred that secondary bacterial invasions are associated with the pathogenesis and severity of the infection and the presence of ticks and mange mites may serve as the portal of entry for dermatophilosis infection. The control of dermatophilosis should take into account of arthropod vectors and secondary bacterial complications.
Structure, elasticity and phase transitions in liquid crystals with deformations

ABSTRACT A molecular-statistical theory describing the nematic liquid crystals (LCs) with spherical inclusions (or point defects) is proposed. At given size of inclusions and nematic order parameters at the surfaces of inclusions (zero in the case of point defects) and far from inclusions (where the nematic LC is almost uniform), the distribution of nematic order parameters in the bulk of LC with inclusions was found to be fully determined by the elastic constants of LC. We have found and explained the two-step heat-driven transformation from the nematic phase into the isotropic phase, with the intermediate phase in between. The nematic order parameters and the elastic constants are evaluated in the framework of a unified approach based on the features of pair interaction potentials of the individual LC molecules. It is shown that, in the case of K33 < K11, the point defects should destroy the conventional nematic phase.
Influence of the Nanoclay Concentration and Oil Viscosity on the Rheological and Tribological Properties of Nanoclay-Based Ecolubricants

This manuscript describes a rheological and tribological study carried out on eco-friendly lubricants. These ecolubricants were made up of nanoclays as dispersed phase (a layered nanosilicate (montmorillonite Cloisite 15A) and a fiber-like nanoclay (sepiolite Pangel B20)) and vegetable-based oil as continuous phase (castor oil (CO), high oleic sunflower oil (HOSO) and their mixtures). A series of nanoclay-based ecolubricants were prepared by varying both nanoclay concentration and base oil, and thus, its viscosity. Friction and wear behaviors were assessed by using a ball-on-three plates tribometer cell. The results showed that the fiber-like sepiolite Pangel B20 yielded an important reduction in the wear scar diameter, thus revealing its potential as anti-wear and load-carrying additive in ecolubricant formulations, while Cloisite 15A proved to have friction improving properties. These anti-wear and friction reducing properties were found to be influenced by both nanoclay concentration and oil viscosity.
Detection of cow hind-leg activity during milking by using a 3-dimensional accelerometer attached to the milking cluster

Graphical Abstract Summary: Hind-leg activity during milking, as an indicator of welfare impairment, was recorded on 45 dairy cows during 2 milkings by using direct visual observations and a 3-dimensional (3D) accelerometer attached directly to the hook of each milking claw. Our study shows that the use of a 3D accelerometer attached to the milking cluster is a promising method to reliably estimate cow hind-leg movements. An automatic and objective detection of foot-lifting, stepping, and kicking behaviors allows analysis of the causes and optimization of the milking process to improve animal welfare, cow (udder) health, and milking performance, as well as reduction of such potentially dangerous behaviors.
Analisis Faktor Penerimaan Layanan e-Government dengan Menggunakan Model UTAUT2 dan GAM di Kabupaten Gunungkidul

Government through Presidential Regulation No. 95 of 2018 concerning SPBE supports and realizes clean, effective and transparent government governance so that it has quality and trusted public services. To improve society using e-government based services, it is necessary what factors influence a person to use e-government services. This study uses the UTAUT2 research model and the Government Adoption Model (GAM) to determine the factors that influence a person using e-government in Gunungkidul. This study used the PLS SEM measurement method and found that the factors that influence e-government acceptance are effort expectation, facilitating conditions, and computer self-efficacy.
CAMELS-AUS: Hydrometeorological time series and landscape attributes for 222 catchments in Australia

<p>Large samples of catchments are becoming increasingly important to gain generalisable insights from hydrological research. &#160; Such insights are facilitated by freely available large sample hydrology datasets, with one example being the CAMELS (Catchment Attributes and Meteorology for Large-sample Studies) series of datasets. &#160; Here we present CAMELS-AUS, the Australian edition of CAMELS. CAMELS-AUS comprises data for 222 unregulated catchments, combining hydrometeorological timeseries (streamflow and 18 climatic variables) with 134 attributes related to geology, soil, topography, land cover, anthropogenic influence, and hydroclimatology. The CAMELS-AUS catchments have been monitored for decades (more than 85&#8201;% have streamflow records longer than 40 years) and are relatively free of large scale changes, such as significant changes in landuse. Rating curve uncertainty estimates are provided for most (75&#8201;%) of the catchments and multiple atmospheric datasets are included, offering insights into forcing uncertainty. This dataset, the first of its kind in Australia, allows users globally to freely access catchment data drawn from Australia's unique hydroclimatology, particularly notable for its large interannual variability. Combined with arid catchment data from the CAMELS datasets for the USA and Chile, CAMELS-AUS constitutes an unprecedented resource for the study of arid-zone hydrology. CAMELS-AUS is freely downloadable from and the corresponding paper is available at https://essd.copernicus. org/preprints/essd-2020-228/. </p>
New Series Solution of the Caputo Fractional Ambartsumian Delay Differential Equationation by Mittag-Leffler Functions

The fractional generalization of the Ambartsumian delay equation with Caputo’s fractional derivative is considered. The Ambartsumian delay equation is very difficult to be solved neither in the case of ordinary derivatives nor in the case of fractional derivatives. In this paper we combine the Laplace transform with the Adomian decomposition method to solve the studied equation. The exact solution is obtained as a series which terms are expressed by the Mittag-Leffler functions. The advantage of the present approach over the known in the literature ones is discussed.
Motivating and Retaining Generation Z Faculty Members in Private Universities

Private universities in Indonesia are self-sustaining as they depend mainly on enrollments for revenues. Human capital is the main asset that they must sagaciously manage and constantly rejuvenate. With millennials constituting 40% of the country's population, this study aims to identify the performance factors of Generation Z faculty members in private universities to attain long-term sustainability. These second-wave millennials enter the workforce early compared to other generations, possess high work ambitions, but they are fraught with stress when striving to achieve higher performance and establishing long-term commitment. The phenomenology research strategy was undertaken in five private universities. Triangulation methodology through interviews, observations, and archives, in addition to source triangulation that involves 20 informants made up of faculty members and their direct supervisors were conducted. The findings denoted the significance of individual motivation, self-determination, job satisfaction, and organization commitment to achieve performance. Furthermore, this study offers insights for leadership to embrace their generation Z faculty members for the longevity of the institutions. Received: 30 October 2020 / Accepted: 11 December 2020 / Published: 17 January 2021
Structural diversity of random aggregates of identical spheres

Random aggregates of hard spheres can be formed either by aggregation or by dynamic reorganization. The resulting two broad families of aggregates present different geometrical structures that have not been studied in a systematic fashion to this day. We investigate various structural indicators (contact coordination number, Delaunay tetrahedra, Voronoi polyhedra, pair distribution functions,…) of aggregates belonging to these two broad families, building them by using Lubachevsky–Stillinger algorithm for the aggregates formed by dynamic reorganization and a family of aggregation algorithms. This comparison takes place over a large range of packing fraction, from 0.370 up to 0.640. This allows distinguishing significant differences between random aggregates formed by aggregation or in a dynamic manner, or according to the contacting status of the spheres. Various structural commonalities are also investigated by different structural indicators. An evaluation of the parameters that could distinguish between all studied aggregates is also proposed.
Influence of N inhibitors on nitrate nitrogen & yield of tomato under intensive cultivation

Agricultural soils are responsible for formation of N2O through nitrification and denitrification processes. Nitrification inhibitors reduces the rate at which ammonium is converted to nitrate either by killing or interfering with the metabolism of nitrifying bacteria. Synthetic nitrification inhibitors can efficiently inhibit nitrification. The present study was undertaken to observe the effect of Potassium thiosulfate (PTS) and neem coated urea on N2O efflux under irrigated tomato cultivation to assess its suitability for decreasing N2O emission to the atmosphere. The results depicted the reduction of nitrate nitrogen on third day after fertilizer application compared to zeroth day. The decreased NO3-N was mainly due to the uptake by tomato for its growth and converted into N2O as intermediate product during nitrification process. The yield of tomato (fruit yield) was significantly increased due to the application of various doses and types of N fertilizer application along with N inhibitors. The highest yield (63.2 t ha-1) was recorded with the soil application of nutrients in STCR based recommendation of NPK with Neem coated urea which was on par with the STCR based recommendation of NPK with Normal urea (183:160:125kg ha-1) along with Potassium thiosulfates @ 1% of applied N whereas blanket recommendation of NPK application recorded lower yield. The 38% lowest N2O emission was found in the STCR based recommendation of NPK with Normal urea with Potassium thiosulfates @ 1% of applied N compared to Blanket recommendation of NPK with Normal urea, which was on par with the treatment of STCR based recommendation of NPK with Neem coated urea.
Growth, mortality and yield of Atherina boyeri Risso, 1810 from Lesina lagoon (Adriatic Sea, Italy)

Population structure, growth, age, mortality and exploitation status of Atherina boyeri, caught in the period from June 2013 to May 2014 in the Lesina lagoon (Apulia region, southern Adriatic) was studied. Samples were taken each month by using beach seines . The length–weight relationship of all sand smell specimens was described by the equation W=0.012*TL 3.10; (R2= 0.84). Population parameters including the asymptotic length (L∞) and growth coefficient (K) were assessed to evaluate the stock status. The recruitment pattern was modeled with a FiSAT routine. The asymptotic length (L∞) was 111.0 mm, while the growth coefficient (K) was 0.68 year−1. The growth performance index ((φ’) reached 3.92. The total mortality coefficient “Z”, the natural mortality coefficient “M” and the fishing mortality coefficient “F” were estimated as 2.24, 1.48 and 0.76 year-1, respectively. Exploitation rate for the population of A. boyeri in the Lesina lagoon estimated as 0.34 was resulted still lower than the predicted maximum value of Emax 0.59. The probability of capture indicated that L50 was of 55.57 mm, indicating that the stock of sand smelt in Lesina lagoon is not being over-fished.
Temperature-responsive hydroxypropylcellulose based thermochromic material and its smart window application

Thermochromic materials are the most cost effective smart window materials and the organic hydrogel material has large solar modulating ability (ΔTsol) and the luminous transmittance (Tlum) compared with inorganic VO2 based materials. Here we report a green and new organic thermochromic material based on hydroxypropylcellulose. With increasing addition of NaCl from 0.5% (wt%) to 5% (wt%), the LCST (lower critical solution temperature) could reduce from 42 °C to 30 °C. The morphology change of freeze dried samples below and above LCST proves that the phase change of this hydroxypropylcellulose based hydrogel is due to the solubility change of the polymer in water. The fine-tuned recipe can give an outstanding solar modulating ability (ΔTsol) of 25.7% and high averaged Tlum of 67.4% with LCST of 38 °C.