Miracle-dz/UniFAR-FTUs huggingface dataset:
Contract Work, a Blessing in Disguise? An Application of the Tenets of the Dual Labour Market Theory

This study aims at investigating the good and bad of contract employment and examines whether there have been changes in the working conditions over time. Specifically, the study explored why people accept contract work and the peculiar emotional challenges they experience due to their employment status. A qualitative research design was employed with data collected through interviews with 34 employees from six financial institutions in Ghana. Thematic analysis revealed that individuals’ reasons for accepting contract work were either for socioeconomic convenience, affective or job-related factors. The emotional challenges experienced by these contract workers were either psychological or social. Another finding that emerged pertained to intrinsic and extrinsic protective factors for the experience of these emotional challenges. These findings imply that although contract workers are more vulnerable and may experience a variety of emotional challenges compared to permanent workers, some of these contract workers consider their jobs a blessing rather than a curse.
A New Ground Truth Data Set For Seismic Studies

Ground truth seismic sources and receivers are the seismologist's equivalent of the geodesist's “benchmark. ” Geodesists measure distances between benchmarks on the surface of the Earth to infer the Earth's shape. Seismologists measure seismic travel-times between sources and receivers to image the Earth's interior velocities. However, unlike geodesists who precisely locate both ends of their benchmark network in a well-defined coordinate system, seismologists rarely know the precise location (or origin time) of their source “benchmark. ” Consequently, source location biases fold into tomographic images of the Earth's interior. Joint source location and velocity inversion mitigates but does not remove these fundamental biases ( e.g. , Zhang and Thurber 2003; Michelini and Lomax 2004). In recognition of this problem, seismologists either incorporate “ground truth” (GT) events with well-established source locations and origin times into their inversions or use them in test relocation exercises to assess or validate their velocity models ( e.g. , Flanagan et al. 2007; Morozov et al. 2005; Murphy et al. 2005; Ritzwoller et al. 2003; Yang et al. 2004). In some cases, the events may have been used in both the model inversion and the model assessment. Until recently, the catalogs of these events (and their arrival times) have been largely limited to nuclear explosions detonated at a few test sites. Several efforts over the last decade have attempted to collect data for an extended family of seismic events with varying degrees of location, depth, and origin time uncertainty ( e.g. Bondar, Engdahl et al. 2004; Waldhauser and Richards 2004). This article reports on a newly available catalog of GT0-5 events and their quality-controlled arrival times. The database of more than 7,000 GT0-5 events and their nearly 500,000 quality-controlled arrivals is submitted to the International Association of Seismology and Physics of the Earth's Interior (IASPEI) Working …
Dissipative rogue wave generation in multiple-pulsing mode-locked fiber laser

Following the first experimental observation of a new mechanism leading to optical rogue wave (RW) formation briefly reported in Lecaplain et al (2012 Phys. Rev. Lett. 108 233901), we provide an extensive study of the experimental conditions under which these RWs can be detected. RWs originate from the nonlinear interactions of bunched chaotic pulses that propagate in a fiber laser cavity, and manifest as rare events of high optical intensity. The crucial influence of the electrical detection bandwidth is illustrated. We also clarify the observation of RWs with respect to other pulsating regimes, such as Q-switching instability, that also lead to L-shaped probability distribution functions.
GULLY EXTRACTION AND MAPPING IN KAJOO-GARGAROO WATERSHED – COMPARATIVE EVALUATION OF DEM-BASED AND IMAGE-BASED MACHINE LEARNING ALGORITHM

Abstract. Monitoring and mapping eroded lands by gully erosion is an essential step to control gully networks. Advances in remote sensing and aerial photography have enabled users to capture data with variant temporal and spatial resolution that is needed in different fields. In addition, introducing different types of unmanned aerial vehicles (UAV) enabled to carry imaging payload. The orthophoto and digital elevation model (DTM) produced from aerial images taken by Aeria-X camera mounted on Sensefly eBee-X drone was employed to identify and map eroded areas by gully in Kajoo-Gargaroo watershed in Chabahar, south-eastern part of Iran. Digitizing gully boarders manually is a tiring and time-consuming process for the operators. Maximum likelihood algorithm as one of the machine learning algorithm was also used to classify orthophoto in order to extract gully borders in the study area. In this study a new algorithm based on analysing geometric features and clustering of the DTM was used to map gullies automatically. The results of the proposed method and machine learning algorithm were compared with the manually digitized gully map. Quantitative evaluation demonstrates that our proposed method reaches better overall accuracy compared to machine learning algorithm with the increase of 7.2 percent in overall accuracy.
CEO Reputation and Corporate Risk-Taking: Managerial Competence or Managerial Defence?

ABSTRACT This study uses China’s A-share listed companies as a research sample to empirically examine the impact of CEO reputation on corporate risk-taking. Our study finds that CEO reputation is positively associated with corporate risk-taking; that is, it supports the managerial competence hypothesis. Furthermore, the concrete path of CEO reputation affecting enterprise risk-taking is shown by the fact that enterprises with a higher CEO reputation reflect higher degrees of innovation (including innovation investment and output), frequency of mergers and acquisitions, capital expenditures, and excessive debt. Heterogeneity analysis shows that the effect of CEO reputation on corporate risk-taking is present only in firms with a higher degree of CEO reputation and a lower level of external governance, and there are no statistically significant differences in the above effects across the nature of property rights. We also find that CEOs with better reputations have higher compensation levels and lower board dissent, which is also consistent with the managerial competence hypothesis. An analysis of the economic consequences shows that a CEO’s reputation can ultimately increase firm value by promoting corporate risk-taking. In addition, the effect of CEO reputation on firm risk reverses to a negative relationship when the CEO is older and has a longer tenure, thereby exhibiting the managerial defense characteristics of reputation.
On-Device Intelligence for Malfunction Detection of Water Pump Equipment in Agricultural Premises: Feasibility and Experimentation

The digital transformation of agriculture is a promising necessity for tackling the increasing nutritional needs on Earth and the degradation of natural resources. Toward this direction, the availability of innovative electronic components and of the accompanying software programs can be exploited to detect malfunctions in typical agricultural equipment, such as water pumps, thereby preventing potential failures and water and economic losses. In this context, this article highlights the steps for adding intelligence to sensors installed on pumps in order to intercept and deliver malfunction alerts, based on cheap in situ microcontrollers, sensors, and radios and easy-to-use software tools. This involves efficient data gathering, neural network model training, generation, optimization, and execution procedures, which are further facilitated by the deployment of an experimental platform for generating diverse disturbances of the water pump operation. The best-performing variant of the malfunction detection model can achieve an accuracy rate of about 93% based on the vibration data. The system being implemented follows the on-device intelligence approach that decentralizes processing and networking tasks, thereby aiming to simplify the installation process and reduce the overall costs. In addition to highlighting the necessary implementation variants and details, a characteristic set of evaluation results is also presented, as well as directions for future exploitation.
Temporal Evolution of Fine Structures in and around Solar Pores

Time series of high-resolution white-light images of six solar pores, observed in 1993 and 1995 at the Swedish Vacuum Solar Telescope (La Palma), are analyzed. The pores constitute an almost ideal laboratory in which to study the interaction of a vertical magnetic field with surrounding convective motions, without the perturbation of the inclined magnetic field in the penumbra. Umbral dots observed in a large (D=8.″9) pore are similar to those in mature umbrae, but they live longer, are brighter, and have a higher filling factor. Granular motions in the vicinity of pores are driven by mesogranular flows. Motions toward the pore dominate in the 2'' zone around the pore boundary, while at larger distances the granules move away from the pore. Pushed by these motions, small granules and granular fragments located close to the pore border sometimes penetrate into the pore, where they move inward as bright short-lived features very similar to umbral dots. The capture of bright features by the pore is probably a microscale manifestation of the "turbulent erosion," which results in the decay of the pore. Formation of a transitory penumbra-like structure at the border of the large pore was observed simultaneously with the appearance of expanding elongated granules, separated by dark filaments, in an adjacent granular field. These effects can be interpreted as a consequence of emerging bipolar magnetic "loops" caused by a temporary protrusion of opposite magnetic polarity.
Effect of electrode configuration on the mechanical-corrosion characteristics of welded AISI 2205 steel structure

The study considered the effect of welding electrode composition on the mechanical and corrosion integrity of welded AISI 2205 duplex stainless steel in a chloride environment. For the electrode coating, two fluxes were developed: basic and acidic fluxes, with basicity indexes of 2.40 and 0.40, respectively. To confirm the thermal stability of the flux ingredients, thermogravimetric analysis was conducted. Different applicable standards were used to evaluate the chemical composition, mechanical, microstructural, and corrosion characteristics of the welded joints. In terms of the ultimate tensile strength, welded joints with electrodes coated with basic flux (E1) had a higher basicity index than those coated with acidic flux (E2). This pattern was also visible when comparing the Vickers hardness of welded joints made with electrodes E1 and E2 to joints made with electrode C (control sample). An increase in amperage from 90 to 110 A increases the heat input required for welding, which in turn affected the weldments' ability to resist corrosion in a chloride environment. Graphical abstract
The effect of image interpretation training on the fracture recognition performance of radiographers

AIM: The aim of this study is to measure the effect of medical image interpretation training on radiographers ability to detect wrist fractures. To achieve this, the study aimed to establish any differences in performance between radiographers without image interpretation training and radiographers with interpretation training. In the course of the study, effects of number of years of radiographic experience and previous image interpretation experience. METHOD: A FROC study was performed to assess nine radiographers undergoing medical image interpretation training and to compare their performance with nineteen radiographers, from a previous study, without similar training. The radiographers evaluated thirty postero-anterior wrist images, in carefully monitored conditions, which included normal and abnormal distal radius'. The results were evaluated with Receiver Operator Characteristic (ROC) analysis. AUC, sensitivity, specificity, and average times were statistically compared using a one-way ANOVA. RESULTS: The study showed there was no statistical difference between the groups of radiographers' AUC values (p≤0.98). There was no statistical difference in sensitivity (p≤0.31), while there was an improved performance noted in specificity (p≤0.06). The study found there was little correlation between increasing years of radiographic experience and improved performance (p≤0.52), but it was noted there was an improvement when radiographers' previous image interpretation experience was considered (p≤0.04). It was seen there was a weak correlation of increasing time spent on interpretation and improved performance (p≤0.70). CONCLUSION This work demonstrates that experienced technologist have inherent image interpretation skills that improves with training, allowing the performance to be comparable to non specialist radiologists.
Vector Fields in the Interior of Kupka–Smale Systems Satisfy Axiom A

Abstract In 1994, S. Hu conjectured in his paper (1994, Trans. Amer. Math. Soc. 342 , 753–772) that Axiom A systems are dense in the interior of Kupka–Smale systems. We will show that if X is in the interior of Kupka–Smale systems, then X satisfies Axiom A.
Investigating the Impact of Intellectual Capital on the Sustainable Financial Performance of Private Sector Banks in India

The study aims to investigate the impact of intellectual capital (I.C) on the sustainable financial performance (F.P) of private sector banks (PSBs) in India. Data were gathered from 17 banks between 2010 and 2021 using Prowessiq (CMIE) and their annual financial reports. To evaluate the ways in which intellectual capital (I.C) affects sustainable financial performance (F.P), the modified value-added intellectual coefficient (MVAIC) methodology was applied. The human capital (HC), capital employed (CE), structural capital (SC), and relational capital (RC) were utilized as independent factors together with three control variables (leverage, size, and GDP), the return on capital employed (ROCE), and return on equity (ROE), which were used as dependent variables. The results show that RC and SC have a clear, statistically significant relationship with ROCE. Additionally, HC and CE have a direct positive and statistically significant effect on ROE. Overall, all of the I.C. components have significant impacts in increasing the efficiency and profitability of Indian private sector banks. Furthermore, the total intellectual capital (MVAIC) exhibits a statistically significant negative association with ROE but a substantial positive association with ROCE. It is advised that policymakers and managers focus more on the various I.C components because they are the key engines generating value for the banks in order to preserve a more sustainable F.P.
A correction to Hasse's version of the Grunwald–Hasse–Wang theorem

While reading Hasse’s paper on the Grunwald theorem [5], I recently discovered a slight error in the statement and proof of two of Hasse’s theorems. These two theorems, the ‘‘Schwacher Einschränkungssatz’’ and the ‘‘Schwacher Existenzsatz’’ of [5], p. 47, are given below, with Hasse’s notation. In this paper Hasse [5] proves three existence theorems to fix an error that Wang [9] had discovered in the paper of Grunwald [2]. Hasse’s version of the corrected Grunwald theorem appeared in the same year that Wang’s paper [10] appeared and was discovered independently (see [8]).
The role of financial attitude, financial experience, financial knowledge and personality on student’s personal financial management behavior

Penelitian ini bertujuan untuk mengidentifikasi peran dari sikap keuangan, pengalaman keuangan, pengetahuan keuangan dan kepribadian, terhadap perilaku pengelolaan keuangan pribadi mahasiswa. Populasi adalah seluruh mahasiswa asal Propinsi Sumatera Utara yang berkuliah di universitas negeri di Kota Langsa. Instrumen pengumpulan data nerupa kuesioner disebar melahui grup Whatsapp (WA) menggunakan google form, dan diperoleh 150 responden yang merespon. Berdasarkan hasil analisis regresi berganda, diperoleh secara parsial bahwa pengalaman keuangan dan pengetahuan keuangan berpengaruh positif dan signifikan terhadap perilaku pengelolaan keuangan pribadi mahasiswa, sementara sikap keuangan dan kepribadian terbukti secara empiris berpengaruh tetapi tidak signifikan terhadap perilaku pengelolaan keuangan mahasiswa. Secara simultan, keempat variabel independen diidentifikasi berpengaruh signifikan terhadap perilaku mahasiswa dalam mengelola keuangan pribadinya.This study aims to identify the role of financial attitudes, financial experience, financial knowledge and personality, on students' personal financial management behavior. The population is all students from North Sumatra Province who are studying at state universities in Kota Langsa. The data collection instrument was in the form of a questionnaire distributed through the Whatsapp (WA) group using a google form, and 150 respondents responded. Based on the results of multiple regression analysis, it was obtained partially that financial experience and financial knowledge had a positive and significant effect on students' personal financial management behavior, while financial attitudes and personality were empirically proven not significantly influence on student financial management behavior. Simultaneously, the four independent variables were identified as having a significant effect on student behavior in managing their personal finances.
On Some Conjectures by Morriset al.about Zeros of an Entire Function

Abstract It is known that the entire function ∑ ∞ n = 0 (− z ) n q n ( n − 1)/2 / n ! , q ∈ (0, 1), has infinitely many positive but no other zeros in the complex plane. A number of conjectures on these zeros have been made by Morris, Feldstein, and Bowen and by Iserles. The main objective of this note is to establish some connection among these conjectures and to prove the following estimates:[formula]where t 0 , t 1 ,… are the zeros in monotonic increasing order. Some identities involving those zeros are proved by using Hadamard's factorisation theorem.
Rank-based score tests for high-dimensional regression coefficients

Abstract: This article is concerned with simultaneous tests on linear regression coefficients in high-dimensional settings. When the dimensionality is larger than the sample size, the classic F -test is not applicable since the sample covariance matrix is not invertible. Recently, [5] and [17] proposed testing procedures by excluding the inverse term in F -statistics. However, the efficiency of such F -statistic-based methods is adversely affected by outlying observations and heavy tailed distributions. To overcome this issue, we propose a robust score test based on rank regression. The asymptotic distributions of the proposed test statistic under the high-dimensional null and alternative hypotheses are established. Its asymptotic relative efficiency with respect to [17]’s test is closely related to that of the Wilcoxon test in comparison with the t-test. Simulation studies are conducted to compare the proposed procedure with other existing testing procedures and show that our procedure is generally more robust in both sizes and powers.
The Effect of Different Concentrations of GA3 and NAA on Growth and Flowering of Asiatic Lily (Lilium × asiatica) cv. Litouwen under Naturally Ventilated Polyhouse Conditions of Prayagraj

This investigation was conducted under a naturally ventilated polyhouse, in the Department of Horticulture, SHUATS, Prayagraj, Uttar Pradesh. In December 2020 with records taken from the month of February to month of March 2021. There were nine treatments comprising two growth regulators Gibberellic acid (GA3) (at 200, 250, 300, and 350 ppm), and Naphthalic Acetic Acid (NAA) (at 50,100,150, and 200 ppm) along with control. The whole experiment was laid out as a Randomized Block Design (RBD) with three replications. The results revealed that among the Lilium cv. LITOUWEN, the foliar application of 250 ppm GA3 significantly increased the number of leaves per plant (66) with enhanced days to bud initiation (25.7 days). The number of bud per plant was 2.8 and stem length was 43.4cm respectively. , GA3 at a concentration of 350 ppm enhanced vase life (7.9 days). and NAA at a concentration of 100 ppm enhanced the number of bulblets (3.3).
Boltzmann equation analysis of electron‐molecule collision cross sections in water vapor and ammonia

Sets of electron‐molecule collision cross sections for H2O and NH3 have been determined from a classical technique of electron swarm parameter unfolding. This deconvolution method is based on a simplex algorithm using a powerful multiterm Boltzmann equation analysis established in the framework of the classical hydrodynamic approximation. It is well adapted for the simulation of the different classes of swarm experiments (i.e., time resolved, time of flight, and steady state experiments). The sets of collision cross sections that exist in the literature are reviewed and analyzed. Fitted sets of cross sections are determined for H2O and NH3 which exhibit features characteristic of polar molecules such as high rotational excitation collision cross sections. The hydrodynamic swarm parameters (i.e., drift velocity, longitudinal and transverse diffusion coefficients, ionization and attachment coefficients) calculated from the fitted sets are in excellent agreement with the measured ones. These sets are finally.
Lid Films of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/Microfibrillated Cellulose Composites for Fatty Food Preservation

The present work evaluates the food packaging performance of previously developed films of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) reinforced with atomized microfibrillated cellulose (MFC) compatibilized by a reactive melt-mixing process. To this end, the novel green composite films were originally applied herein as lids in aluminum trays to preserve two dissimilar types of fatty foods, namely minced pork meat and sunflower oil. Results indicated that the PHBV/MFC films effectively preserved the physicochemical and microbiological quality of pork meat for one week of storage at 5 °C. In particular, the compatibilized green composite lid film yielded the lowest weight loss and highest oxidative stability, showing values of 0.935% and 0.78 malonaldehyde (MDA)/kg. Moreover, none of the packaged meat samples exceeded the acceptable Total Aerobial Count (TAC) level of 5 logs colony-forming units (CFU)/g due to the improved barrier properties of the lids. Furthermore, the green composite films successfully prevented sunflower oil oxidation in accelerated oxidative storage conditions for 21 days. Similarly, the compatibilized PHBV/MFC lid film led to the lowest peroxide value (PV) and conjugated diene and triene contents, with respective values of 19.5 meq O2/kg and 2.50 and 1.44 g/100 mL. Finally, the migration of the newly developed PHBV-based films was assessed using two food simulants, proving to be safe since their overall migration levels were in the 1–3 mg/dm2 range and, thus, below the maximum level established by legislation.