Miracle-dz/UniFAR-FTUs huggingface dataset:
Analysis of the Hybrid Power System for High-Altitude Unmanned Aircraft

The application of single solar array on high-altitude unmanned aircraft will waste energy because of its low conversion efficiency. Furthermore, since its energy utilization is limited, the surface temperature of solar array will rise to 70°C due to the waste solar energy, thus reducing the electrical performance of the solar array. In order to reuse the energy converted into heat by solar array, a hybrid power system is presented in this paper. In the hybrid power system, a new electricity-generating method is adopted to spread the photovoltaic cell on the wing surface and arrange photothermal power in the wing box section. Because the temperature on the back of photovoltaic cell is high, it can be used as the high-temperature heat source. The lower wing surface can be a low-temperature cold source. A high-altitude unmanned aircraft was used to analyze the performances of pure solar-powered aircraft and hybrid powered aircraft. The analysis result showed that the hybrid system could reduce the area of wing by 19% and that high-altitude unmanned aircraft with a 35 m or less wingspan could raise the utilization rate of solar energy per unit area after adopting the hybrid power system.
Abstract. Lung microinvasive adenocarcinoma (MIA) is a newly‐defined subtype of early stage non‐small cell lung cancer (NSCLC). However, its epidermal growth factor receptor (EGFR) mutation status and clinical significance

Lung microinvasive adenocarcinoma (MIA) is a newly‐defined subtype of early stage non‐small cell lung cancer (NSCLC). However, its epidermal growth factor receptor (EGFR) mutation status and clinical significance remain unclear. The present study aimed to determine EGFR mutation characteristics and identify their significance in patients with resected lung MIA. The present study also analyzed clinicopathological differences between EGFR molecular subgroups defined as 19Del and L858R. The present study examined EGFR mutations in 79 consecutive lung MIA resection specimens and compared the differences in clinicopathological features between the EGFR wild‐type and mutation groups, as well as between the 19Del and L858R subgroups. EGFR mutations were detected in 60 (75.95%) tumors. The most common mutations were 19Del (28 cases; 35.44%) and L858R (30 cases; 37.97%). Two patients harbored rare mutations and one of them had a concomitant double mutation. EGFR mutations were significantly associated with microinvasion component, thyroid transcription factor 1 (TTF‐1) expression, intratumoral fibrosis and inflammatory cell infiltration. Subgroup evaluation indicated that there was a significant association between 19Del and tumor size, maximum diameter of microinvasion, presence of intratumoral fibrosis and inflammatory cell infiltration. Similar associations were observed for the L858R subgroup, and L858R was associated with TTF‐1 expression. In particular, 19Del occurred more frequently in MIA with a smaller size, with a smaller microinvasive area, without TTF‐1 expression, and lacking intratumoral fibrosis and inflammatory cell infiltration. By contrast, L858R was detected more frequently in MIA with entirely different tumor features. In conclusion, the results of the present study indicated that surgically resected MIA cases harboring different EGFR gene statuses exhibit distinct clinicopathological features. Significant differences in pathological features associated with the tumor microenvironment were identified in MIA with 19Del or L858R mutations. Therefore, the present study proposed that MIA should be classified into molecular subgroups based on EGFR mutation subtypes. The molecular sub‐classification should be taken into account for prognostic evaluation and clinical management of MIA.
SOLVING COUPLED SYSTEM OF NONLINEAR PDE'S USING THE NATURAL DECOMPOSITION METHOD

In this research paper, we develop a new method called the Natural Decomposition Method (NDM) for solving coupled system of nonlinear partial differential equations (CSNLPDEs). The new method is a combination of the Natural Transform Method (NTM) and the Adomian Decomposition Method (ADM). By using the new method, we successfully handle some class of cou- pled system of nonlinear partial differential equations (CSNLPDEs) in a simple and elegant way. The proposed method gives an exact or approximate solution in the form of a rapid convergence series. Hence, the Natural Decomposition Method (NDM) is an excellent mathematical tool for solving linear and nonlin- ear differential equation. Thus, NDM can easily be used to solve a wide class of nonlinear partial differential equations (NLPDEs) and obtain an exact or analytical solution.
Separability in gauge theories

Much of the philosophical literature on classical Yang--Mills theories is concerned with the differences between interpretations that represent the state of the world in terms of fields and those that represent the state of the world in terms of properties assigned to curves in spacetime. In the philosophical literature on Yang-Mills theories, field formulations are taken to have more structure and to be local in a particular sense, while the alternative curve-based formulations are taken to have less structure at the cost of nonlocality. I formalize the notion of locality at issue and show that theories with less structure are indeed nonlocal. However, the amount of structure had by some formulation is independent of whether it uses fields or curves. This leads to a general lesson about structure in mathematized theories. The difference in structure corresponding to the difference in locality is not a difference in set-theoretic structure. Rather, it is a difference in the structure of the collection of models of the theory considered as a category.
Defining a mid-Holocene earthquake through speleoseismological and independent data: implications for the outer Central Apennines (Italy) seismotectonic framework

Abstract. A speleoseismological study has been conducted in the Cavallone Cave, located in the easternmost carbonate sector of the Central Apennines (Maiella Massif), in a seismically active region interposed between the post-orogenic extensional domain, to the west, and the contractional one, to the east. The occurrence of active silent normal faults , to the west, close to blind thrusts, to the east, raises critical questions about the seismic hazard for this transitional zone. Large collapses of cave ceilings, fractures, broken speleothems with new re-growing stalagmites on their top, preferential orientation of fallen stalagmites and the absence of thin and long concretions have been observed in many portions of the karst conduit. This may indicate that the cave suffered sudden deformation events likely linked to the occurrence of past strong earthquakes. Radiocarbon dating and, above all, the robust correspondence with other coeval on-fault and off-fault geological data collected in surrounding areas outside the cave, provide important constraints for the individuation of a mid-Holocene paleoearthquake around 4.6–4.8 kyr BP. On the basis of the available paleoseismological data, possible seismogenic sources can be identified with the Sulmona normal fault and other active normal fault segments along its southern prosecution, which recorded synchronous strong paleoevents. Although the correlation between speleotectonic observations and quantitative modeling is disputed, studies on possible effects of earthquake on karstic landforms and features, when corroborated by independent data collected outside caves, can provide a useful contribution in discovering past earthquakes.
Behaviours of the Effective Leadership in Universities: Findings of a Meta-Analysis Study

The purposes of this study are to investigate what sorts of leadership behaviours, and how leaders contribute to the successful universities in many countries. The investigation was accomplished using a simple meta-analysis model. Based on several research studies and literature reviews, the findings indicated a range of leadership styles have been applied in many universities in Europe U.S., and Asia. The effective leadership behaviours for the global context, however, were dominantly found in universities lead under transformational process. This style is practiced since it fits to deal with the changing and competitive environment. The executives, thus, have to be furnished with reputable competencies to implement this model. Future studies are suggested to concern more on personality traits as they are key elements in developing the individual leadership capacities.
Performance and Stability of Some Durum Wheat Genotypes under Different Sowing Dates and Nitrogen Fertilizer Levels

The present study was carried out at Shandaweel Agricultural Research Station, Agricultural ResearchCenter, Egypt. Eight durum wheat genotypes of diverse origin were evaluated under 12 environments, whichare a combination between three sowing dates, i.e., 20th November, 10th December and 30th December undertwo levels of nitrogen fertilizer, i.e., 50 and 75 kg N/fed during two winter growing seasons of 2015/2016 and2016/2017. The combined analysis of variance revealed high significant differences among environments,genotypes as well as genotype × environment interaction for six studied traits i.e., days to 50% heading, plantheight, number of spikes/m2, number of kernels/spike, 1000-kernel weight and grain yield/fed. The resultsshowed that sowing at the favorable date (20th November) using 75 kg/fed nitrogen fertilizer increased allstudied traits. The joint regression analysis of variance for the studied traits showed high significant meansquares due to environment + genotype × environment interactions revealing that genotypes considerablyinteracted with the environmental conditions. The mean squares due to G × E (linear) were found to besignificant for all studied traits, except for days to heading and 1000-kernel weight which reveals geneticvariability among genotypes for linear response to varying environments. Stability parameters (bi and S2d)revealed that six genotypes were stable for days to heading, six for plant height, three for number ofspikes/m2, three for number of kernels/spike and six for 1000-kernel weight. Five out of the eight studiedgenotypes, i.e., Sohag 5, line 2, line 3, line 4 and line 5 showed non-significant deviation from regression andtheir regression coefficient values were close to unity which are classified as stable genotypes for grain yield.Two genotypes had grain yield higher than the grand mean (Sohage 5 and Line 4) and could be considered themost adapted genotypes.
Analysis of the effects of conservatism in accounting information after the 2011 change in the basic conceptual pronouncement

Purpose – This study researches whether the change in NBC TG, promoted in 2011, that excluded Prudence (Conservatism), had any effect on companies’ accounting information. Design/methodology/approach – Quantitative approach, using a linear regression based on the Basu (1997) method, Wilcoxon tests and t test, on a sample with 109 companies, listed on the BM&FBovespa, from 2008 to 2013. Findings – The results indicate that conservatism is present in accounting for the entire period, and changes do not occur in this feature of the accounting information as of 2011. Originality/value – This research reinforces the perception of the superiority of economic interest, in particular for possible tax gains, to the detriment of accounting information quality, be it of regulatory origin or another.
Ambrosia artemisiifolia in the Czech Republic: history of invasion, current distribution and prediction of future spread.

We analyse the dynamics of invasion of Ambrosia artemisiifolia (common ragweed), one of the most noxious invasive species in Europe with a great impact on human health. We investigate the habitats and factors that shape its current distribution and specify areas in the Czech Republic endangered by the further spread of this species. The analysis is based on a total of 281 records in 164 grid cells, recorded up to 2016, of which 37 harbour naturalized populations and 127 casual populations. The majority of records (49%) was from railway corridors, followed by human settlements (11%), and there was a recent increase in records from roadsides. A conditional inference tree revealed factors shaping the species distribution with the effect of the proportional area of industrial, commercial and transport units as the most important, highly significant variable, further fine-tuned by factors related to human-related dispersal and climate, such as density of railway network and temperature, respectively. The prediction model indicated that many suitable grid cells are unoccupied. Many of these grid cells are in the proximity of currently occupied ones but there are also some cells rather far from current populations. Further spread of A. artemisiifolia in the Czech Republic is thus highly probable.
The origin of the eccentricity of the hot Jupiter in CI Tau

Following the recent discovery of the first radial velocity planet in a star still possessing a protoplanetary disc (CI Tau), we examine the origin of the planet's eccentricity (e ~0.3). We show through long time-scale (10^5 orbits) simulations that the planetary eccentricity can be pumped by the disc, even when its local surface density is well below the threshold previously derived from short time-scale integrations. We show that the disc may be able to excite the planet's orbital eccentricity in <1 Myr for the system parameters of CI Tau. We also perform two-planet scattering experiments and show that alternatively the observed planet may plausibly have acquired its eccentricity through dynamical scattering of a migrating lower mass planet, which has either been ejected from the system or swallowed by the central star. In the latter case the present location and eccentricity of the observed planet can be recovered if it was previously stalled within the disc's magnetospheric cavity. (Less)
Malaysian Rice Husk Ash – Improving the Durability and Corrosion Resistance of Concrete: Pre-review

The objective of this paper is to presents and study a pre-review of Malaysian rice ash ask as a partial cement replacement in different percentage, grinding time and performance corrosion of RHA blended concrete. The increasing demand for producing durable construction materials is the outcome of the fast polluting environment. Supplementary cementitious materials prove to be effective to meet most of the requirements of durable concrete. Rice husk ash is found to be greater to other supplementary materials like silica fume and fly ash. Due to its high pozzolanic activity, both strength and durability of concrete are enriched. Addition of rice husk ash to Portland cement not only improves the early strength of concrete, but also forms a calcium silicate hydrate gel around the cement particles which is highly dense and less porous. This may increase the strength of concrete against cracking. Previously, investigation on the corrosion performance of rice husk ash blended concrete is very limited. Further researches are ongoing or have started recently by the authors to study the performance of RHA and corrosion of concrete mixes. Various tests were carried out to evaluate durability of concrete made with 10, 20, 30 and 40% replacements of RHA by weight of cement. Nevertheless, the results of compressive strength, absorption test and chloride penetration from previous investigation were presents in this study.
The ice-covered Earth instability in a model of intermediate complexity

The ice-covered Earth instability found in energy balance models is studied with a zonal mean statistical dynamical atmospheric model coupled to a global mixed layer ocean model. The response of the model to changes in solar constant is examined in two parallel studies, one with and one without a fixed meridional heat transport (a Q-flux) being included in the ocean model. The Q-flux is derived so as to make the climate with the current value of the solar constant resemble the earth’s current climate. In both cases the climate displays a hysteresis loop as the solar constant decreases and then increases, with two equilibrium states being possible for a range of values of the solar constant. In the case without a Q-flux, as in energy balance models, one state corresponds to an ice-covered Earth, and the other is partially covered. In the case with a Qflux, because the poleward Q-flux is stronger in the Southern Hemisphere, one state corresponds to an icecovered Northern Hemisphere, but a Southern Hemisphere that is only partially ice-covered; the other state has much reduced ice-cover in both hemispheres. In the case when the Q-flux is present, the sensitivity of the state with smaller ice-cover is about half as much, and the hysteresis loop extends over a smaller range of values of the solar constant. Also in this case there is a strong ice-covered Earth instability that sets in when the solar constant is about 13–14% below the current value. However in the case without a Q-flux the ice-covered Earth instability virtually disappears. The different behavior is attributed to the much lower efficiency of the meridional heat transport in the case with no Q-flux. The behavior in this case may be more realistic for cold climates. The results in both cases confirm the simple analytical relation between global mean surface temperature and global ice area found in energy balance models.
Effect of Gradual and Shock Chilling Stress on Abscisic Acid, Soluble Sugars and Antioxidant Enzymes Changes in ‘Sultana’ Grapevine.

Plants may show different behaviours during exposure to low temperature stress through various mechanisms. In this study, the chilling responses of ‘Sultana’ grapevine were investigated during a gradual chilling (2 °C/h) and also during a shock chilling (5 °C/h) from 24 °C to 4 °C. After artificial chilling stress, electrolyte leakage, lipid peroxidation, hydrogen peroxide production and antioxidant enzymes activities were measured in all plants leaves. Moreover, the potential of plant to accumulate abscisic acid and osmoregulants were compared under both gradual and shock chilling stresses. Based on the results, a significant difference was found between the electrolyte leakage, lipid peroxidation and hydrogen peroxide content of plants under two chilling regimes. These indices were found to be higher in shock chilling stressed plants compared with gradual chilling stressed vines because of the lower catalase, peroxidase and ascorbate peroxidase activities. Moreover, gradual chilling stressed vines exhibited higher accumulation of abscisic acid, proline and total phenolic compounds. The chlorophyll degradation and relative water content were lower in gradual cold stressed plants. Glucose and fructose, unlike sucrose showed higher concentration in gradual cold stressed vines. Totally, under gradual chilling stress grapevine plants showed better cold acclimation by lower oxidative stress and higher accumulation of osmoregulants in compared with shock chilling stressed vines.
Impact of Transformational Leadership on Psychological Empowerment and Job Satisfaction Relationship: A Case of Yemeni Banking

The banking sector of Yemen is under threat due to the lack of confidence and trust of the prospective clients that hindered economic development of the country. The study aimed to measure a moderating effect of transformational leadership on employees’ psychological empowerment and job satisfaction relationship so that attitudes of the Yemeni can be bumped towards banking. In this study, 160 employees were surveyed in different branches of four banks in Yemen. The data were analyzed in four stages namely, reliability and validity analysis, descriptive analysis, multivariate analysis, and hypotheses testing analysis. The study revealed a significant positive relationship between employees’ psychological empowerment and transformational leadership towards their job satisfaction level. If the policy makers consider the findings and undertake necessary measures, the Yemeni banking is expected to be accelerated which will contribute to the economy of the country.
Hardware Implementation of an Efficient Guided Image Filter for Underwater Image Restoration

Transmission estimation is an important step in underwater image restoration based on dark channel prior. To obtain good visual quality, guided image filter is usually adopted to refine the crude transmission map of underwater images. In this paper, we first develop a simplified guided image filter for underwater image restoration to reduce the computational complexity of transmission estimation while maintaining good visual quality. Subsequently, a low-cost architecture for the simplified guided image filter is proposed to achieve real-time Full-HD (1920 × 1080) underwater image restoration. The proposed architecture is synthesized with TSMC 90nm CMOS technology and the result shows that it can operate at 100MHz and support Full-HD image restoration at a throughput of 30frame/s with 10.5K gate counts and 1.35KB on-chip memory. Compared to previous hardware design of guided image filter, the proposed design uses 11.3% of gate counts and 42.2% of on-chip memory to achieve the same frame rate with almost no visual quality degradation.
To bid or not to bid, this is the question: the Italian experience in competitive tendering for local bus services

Competitive tendering is a popular mechanism for the provision of local bus services when a major objective is subsidy savings. Despite uncertainties in the legal framework some competitive tendering was implemented in Italy since 1998. The evidence so far is that participants were limited in number, the incumbents were almost everywhere able to gain the franchise, whilst subsidy savings were in many cases negligible. If some “political” conditions favouring more effective tendering procedures are not fulfilled, other regimes should be considered in order to obtain substantial subsidy savings.
Heat-induced formation of single giant unilamellar vesicles

Giant unilamellar vesicles (GUVs) are an excellent model system for the investigation of lipid membranes, the study of membrane proteins and ion channels in a biomimetic environment, and in the creation of artificial cells. Here, we describe a novel method for the preparation of GUVs from single multilamellar liposomes by means of directed infrared laser heating. Our method generates individual unilamellar vesicles at selected locations, not only from natural and artificial lipid mixtures containing negatively charged lipids, but also from preparations of single lipids, such as neutral phosphatidylethanolamine. The presented method provides a new efficient resource for giant vesicle research and offers an alternative to the electroformation and de/rehydration techniques.