Miracle-dz/UniFAR-FTUs huggingface dataset:
Extraction of core competencies for Big Data: implications for Competency-Based Engineering Education

Big data industry is an innovative and dynamic working environment based on highly qualified workforce. As the big dataphenomenon advances, the demands of the industry for the workforce having these skills and competencies have increasedconsiderably in recent times. Accordingly, the engineering education programs today need to adapt these skills and competenciesinto their programs. Focusing on this issue, this study aims to extract the core competencies in-demand by the industry. Thesecompetencies are the critical ones to better guide the curriculum developers of the engineering education programs. Themethodology of the study is based on topic modeling analysis of online job advertisements using Latent Dirichlet Allocation, agenerative approach for probabilistic topic models, to automatically discover the trending topics in big data jobs. As a result,domain-specific competencies, developer competencies, soft competencies, business-oriented competencies and analyticalcompetencies are discovered, which revealed that big data competencies contain a wide spectrum of knowledge domains and skillsets based on a multidisciplinary background. The findings of the study are very critical to guide the industry, academia, and bigdata communities for bridging the gap between the requirements of the industry and the engineering education programs.
Spatial clustering of Diabrotica virgifera virgifera and Agriotes ustulatus in small‐scale maize fields without topographic relief drift

The soil‐living larvae of Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae) and Agriotes ustulatus Schaller (Coleoptera: Elateridae) can cause economic damage to maize roots, Zea mays L. (Poaceae). This study investigated the spatial clustering of both pests in four small‐scale maize fields in southern Hungary, where clustering had been observed but not expected due to the lack of topographic relief drifts and soil structuring. Between 2000 and 2002, numbers of D. v. virgifera larvae and adults and of A. ustulatus larvae were determined at four randomly chosen georeferenced maize plants in each of 24 plots per field. Soil moisture, soil bulk density, and vegetational characteristics were assessed. Moran's I test for spatial autocorrelations, semivariogram analyses, and interpolated mapping revealed that D. v. virgifera larvae and adults were spatially clustered in 67 and 50% of cases, respectively. Larvae of A. ustulatus were clustered in 75% of cases. Diabrotica virgifera virgifera larval distributions were mainly determined by increasing weed density (negative correlation), in particular with high densities of Cirsium arvense (L.) (Asteraceae), as well as by increasing soil moisture (negative correlation). Adult distributions of D. v. virgifera were mainly determined by the density distribution of flowering maize. They were moreover correlated with larval distribution and with the adult distribution of the previous year. The density distributions of male adults differed from those of females. Female density was additionally correlated with higher soil moisture and Poaceae density, e.g., with Sorghum halepense (L.) Pers. No relation was found between the larvae of A. ustulatus and D. v. virgifera. Agriotes ustulatus larval distributions were mainly determined by vegetational cover (correlation with less cover). Conclusively, male and female D. v. virgifera adults, larvae of D. v. virgifera, and larvae of A. ustulatus will display different spatial clustering even within ostensibly homogeneous habitats of flat small‐scale maize fields.
How to make the European Green Deal work

European Commission president-designate Ursula von der Leyen has made climate change a top priority, promising to propose a European Green Deal that would make Europe climate neutral by 2050. The European Green Deal should be conceived as a reallocation mechanism, fostering investment shifts and labour substitution in key economic sectors, while supporting the most vulnerable segments of society throughout the decarbonisation process. The deal’s four pillars would be carbon pricing,.
Compact Thermal Model of the Pulse Transformer Taking into Account Nonlinearity of Heat Transfer

This paper presents a compact nonlinear thermal model of pulse transformers. The proposed model takes into account differentiation in values of the temperatures of a ferromagnetic core and each winding. The model is formulated in the form of an electric network realising electrothermal analogy. It consists of current sources representing power dissipated in the core and in each of the windings, capacitors representing thermal capacitances and controlled current sources modelling the influence of dissipated power on the thermal resistances in the proposed model. Both self-heating phenomena in each component of the transformer and mutual thermal couplings between each pair of these components are taken into account. A description of the elaborated model is presented, and the process to estimate the model parameters is proposed. The proposed model was verified experimentally for different transformers. Good agreement between the calculated and measured waveforms of each component temperature of the tested pulse transformers was obtained. Differences between the results of measurements and calculations did not exceed 9% for transformers with a toroidal core and 13% for planar transformers.
Dinámica espacio-temporal de cuatro especies de staurastrum (Meyen 1829, emend. Ralfs 1848) en un embalse eutrófico colombiano

SPATIO-TEMPORAL DYNAMICS Of fOUR SPECIES Of Staurastrum (Meyen 1829, emend. Ralfs 1848) IN A COLOMbIAN EUTROPHIC RESERVOIR. Dynamics of four species of Staurastrum (Meyen 1829, emend. Ralfs 1848) in Riogrande II reservoir (6 o 35 ‘57’’ 6 ° 28’ 79’’N; 75th 32 ‘17’’ 75 o 25’ 85’’W) in the spatial and temporal scales were carried out. Sampling stations were five: Dam, Río Grande downstream, Río Chico downstream, Río Chico upstream and Ánimas. Samples were taken every ten days between July 2002 and July 2003. Staurastrum is a characteristic desmid of oligotrophic environments with low pH; however, the reservoir evaluated is an eutrophic one. The most abundant and widely distributed was Oecologia Australis 15(3): 726-746, Setembro 2011 doi:10.4257/oeco.2011. 1503.22 DINÁMICA ESPACIO-TEMPORAL DE CUATRO ESPECIES DE Staurastrum Oecol. Aust. , 15(3): 726-746, 2011 727 S. paradoxum. The results show that these four species were highly dynamic over time (CV> 100%) and contagiously distributed in space up to the most eutrophic station (Río Chico upstream), mainly S. gracile (k mean = 2). S. paradoxum showed a very small similarity value (0.18) with respect to the group formed by S. gracile, S. tetracerum and S. longipes. Free CO2 (R = 0.83), rainfall (R = 0.62) and chlorophyll a (R = 0.58) impacted positively on the ecology of the species studied; and negatively light gradient (R = 0.68). None of the forms of nutrients considered was significantly associated with changes in their densities. The behavior of species is explained by Harris ́ non-equilibrium theory’ where environmental stochasticity makes less severe the competition between them. The driving force behind the dynamics of these desmids is the partial atelomixis which allows these algae to stay suspended in the water column. They formed two groups of species with mixed ecological strategies to use the environment: first, S. gracile, was classified as a transitional form strategist R-S, better adapted to more eutrophic stations (Rio Chico and Rio Grande), while the triad S. longipes-S. paradoxum-S. tetracerum adjusted more to the C-S transitional strategy.
A survey of denitrifying Azospirillum brasilense in two contrasted conditions of the sugarcane cropping region of Tucumán, Argentina

The aim of this work was the assessment of denitrifying Azospirillum brasilense isolates in two contrasted regions in the sugarcane cropping region of Tucuman, Argentina. For that, Azospirillum was isolated from the rhizoplane of sugarcane plants using nitrogen-free malate semisolid medium. Microbiological characteristics andrestrictionprofilesof�16SrDNAindicatedthepresenceofA. brasilense. PCR analysis of the isolates showed thatthekeyenzymefordenitrificationcorrespondedtothenitritereductasetypenirS. There were differences among the isolates in their physiological response to the nitrite reductase activity and the enzymatic restriction profilesofthenirS fragment. Differences among the isolates at genomic level were also assessed by RAPD method. According to the higher naturally occurrence of denitrifying Azospirillum in the wetter area of the sugar- canecroppingregion,�ourresultssuggesttheexistenceofaninfluenceofrainfallregimeandsoilcharacteristics� intheir��environmentaldistribution. �Theknowledgeoftheecologyofdenitrifiers� (inthiscase,� Azospirillum strains), represents a step forward to the rational utilization of microbial diversity in agriculture.
A Modified Algorithm to Enhance Vanet Performance

Vehicular Ad Hoc network (VANET) becomes an important technology. Specially, it assists vehicle to vehicle communication. Enhancing and finding a modified protocol of routing for this type of networks is a clear difficulty because these are self-managed, distributed, and large networks. This paper specifies this difficulty by discussing VANET challenges to find the accurate VANET algorithms which work locally but effect the entire network performance generally. All the more particularly, we used various snapshots at previews from urban motorways and intercity highways of various sizes and densities, and studied different variables, for example, the grouping coefficient , the hub degree dissemination, and the normal most brief way length, keeping in mind the end goal to better comprehend the system structure and contrast it with structures regularly found in extensive genuine systems, for example, little world and sans scale systems. This paper utilized this information to enhance the existing VANET conventions. As an illustrative case, it exhibited that, by including new segments that make use of this information, the overhead of the traditional urban highway can be diminished liberally with no imperative execution degradation. The results of the proposed algorithm convention can essentially lessen the system overhead without corrupting the reach-ability execution particularly in medium and high system thickness situations. Moreover, it remains an intriguing subject for future examination to assess the effect of components.
Direct conversion of human fibroblasts to liver cancer cells

Cancer is the most complex genetic disease known, with mutations in more than 250 genes contributing to different forms of the disease. Most mutations are specific to particular types of cancer, suggesting that cancer genes interact with cell lineage-determining factors to drive the transformation process. To identify the factors necessary and sufficient to define a lineage-specific cancer type, we have reprogrammed and transformed normal human fibroblasts to liver cancer cells. We show that reprogramming human fibroblasts to induced hepatocytes (iHeps) makes the cells sensitive to transformation by a combination of oncogenes that is characteristic of liver cancer (CTNNB1, TERT and MYC). The transformed iHeps are highly proliferative, tumorigenic in nude mice, and bear gene expression signatures of liver cancer. Our results show that lineage-determining factors collaborate with oncogenes to drive tumorigenesis and establish a paradigm for defining the molecular states of distinct types of human cancer.
Determinants of capybara presence in afforestations of the lower delta of the Paraná river, Argentina

The delta of the Paraná River in Argentina represents the southernmost stronghold for capybaras (Hydrochoerus hydrochaeris), but this area is highly modified due to commercial afforestations with Salicaceae. Water management (e.g. drainage of marshes) and land protections (e.g. polders) are carried out to improve field conditions for developing afforestations. To assess determinants of capybara presence within polder afforestations, its presence was surveyed in 2011–2013 along with 35 habitat and human-related variables at two spatial scales, in 53 watercourse-side sites. Using logistic regression, a habitat model was developed. Capybaras were present in 52.8% of sites. Water depth at the center of the watercourse had the strongest positive effect on capybara presence, followed by cover of reed marshes and cover of grass bush on the banks. Cover of adult poplar plantations showed a significant negative effect on capybara presence. Watercourses within polder afforestations can provide habitat for capybaras, although their use by these rodents depends on factors interacting at different scales.
Open‐top designs for manipulating field temperature in high‐latitude ecosystems

Passive open‐top devices have been proposed as a method to experimentally increase temperature in high‐latitude ecosystems. There is, however, little documentation on the efficacy of these devices. This paper examines the performance of four open‐top chambers for altering temperature at six sites in the Arctic and Antarctica. Most of the heating effect was due to daytime warming above ambient; occasional night‐time cooling below ambient, especially of air temperatures, depressed mean daily temperature. The mean daily temperatures at four arctic sites were generally increased by 1.2–1.8 °C; but occasionally, temperature depressions also occurred. Under optimal conditions at the antarctic site (dry soils, no vegetation, high radiation) mean daily soil temperatures were increased by +2.2 °C (–10 cm) to +5.2 °C (0 cm). Protection from wind may play a more important role than temperature per se in providing a favourable environment for plant growth within open‐top devices. Wind speed had a generally negative impact on mean daily temperature. Daily global radiation was both positively and negatively related to chamber temperature response. The effect of chambers on snow accumulation was variable with the Alexandra Fjord site showing an increased accumulation in chambers but no difference in the date of snowmelt, while at Latnjajaure in a deep snowfall site, snowmelt occurred 1–2 weeks earlier in chambers, potentially increasing the growing season. Selection of a passive temperature‐enhancing system requires balancing the temperature enhancement desired against potential unwanted ecological effects such as chamber overheating and altered light, moisture, and wind. In general, the more closed the temperature‐enhancing system, the higher is the temperature enhancement, but the larger are the unwanted ecological effects. Open‐top chambers alter temperature significantly and minimize most unwanted ecological effects; as a consequence, these chambers are a useful tool for studying the response of high‐latitude ecosystems to warming.
Reproductive Biology of Palaemon longirostris (Decapoda: Palaemonidae) from Gironde Estuary (France), with a Comparison with Other European Populations

Abstract Our study details key parameters of the reproductive biology of the shrimp Palaemon longirostris, e.g., spatio-temporal variation of the sex-ratio, migration pattern, breeding period, fecundity, size at the onset of maturity, and egg volume. While P. longirostris population was very little studied in its distribution area, our fist aim was to complete that lack of knowledge and to provide a basis for understanding its population dynamic. Finally, our results were also compared with those reported from different studies on this species within Europe, in order to test the reported latitudinal cline of reproductive parameters in decapods. During a one-year survey, P. longirostris have been collected monthly across a large part of the Gironde estuary (France). Biometric measurements and determination of sex and maturation stages were carried out on preserved subsamples. Eggs were counted and measured for ovigerous females. In the Gironde, the breeding period was restricted from March to July, and related to water temperature. The size of the ovigerous females ranged between 7.1 and 14.6 mm cephalothorax length; according to their size, these females brought between 78 and 1391 eggs (547 on average). These results were compared with available data from the literature on French or foreign populations. For two reproductive parameters a latitudinal cline was noticed: e.g., an increase of the maximum females size and a restriction of the breeding period with latitude. Due to the weakness of available data on the reproductive biology of P. longirostris, it was very difficult to compare fecundity (number of eggs brought per female) and egg volume between localities. As expected fecundity could decrease with latitude, but this trend remains to be confirmed by more extensive studies on the species populations.
Produção de biomassa de Aphanothece microscopica e Chlorella vulgaris por cultivo heterotrófico a partir de Glicose

Microalgas e cianobacterias sao microrganismos preferencialmente fotossintetizantes, no entanto algumas linhagens possuem a capacidade de se desenvolver no escuro, a partir do consumo de moleculas orgânicas simples, como glicose, acetato e glicerol. Nestes tipos de cultivos, denominados mixotroficos e heterotroficos, glicose e a fonte de carbono mais comumente utilizada, entretanto, informacoes quanto a concentracao ideal para o crescimento otimo dos microrganismos sao ainda dispersas e nao permitem alcancar uma conclusao definitiva. Este trabalho teve por objetivo explorar o estudo do cultivo heterotrofico da cianobacteria Aphanothece microscopica Nageli e da microalga cloroficea Chlorella vulgaris Beyerink a partir de glicose, visando a usufruir do metabolismo versatil destes microrganismos no tratamento de aguas residuarias agroindustriais. Ensaios foram conduzidos primeiramente em meio de cultura com diferentes concentracoes de glicose em sistema mixotrofico. Na melhor condicao de crescimento (12,5 e 25 g L-1, para C. vulgaris e A. microscopica , respectivamente), avaliou-se o cultivo em sistema puramente heterotrofico, obtendo-se velocidades especificas de crescimento maximas de 0,09 e 0,089 h-1 e remocoes de 30,4% e 42% de glicose, para a cianobacteria e a cloroficea, respectivamente, demonstrando viabilidade do cultivo de ambas as especies nestas condicoes.
Influence of Human Capital on Organizational Performance as Mediated by Management Control System and Operational Risk Management

Today, business in our world is experiencing systemic failures that affect the performance of the company. Mostly, through the use of financial measurements, corporate success is viewed at their level of effectiveness. This study explored the mediating effect of the management control system and operational risk management on the impact of human capital on organizational performance. This was a quantitative research with a correlational research design. The study employed self-constructed research instruments with Cronbach Alpha of human capital 0.893, Organizational performance 0.855, and operational risk management 0.833 and management control system 0.894. The respondents were made up of 439 (10%) of the Institute of Chartered Accountant Ghana members who were conveniently sampled and answered an online distributed questionnaire. The results of the study revealed that management control system and operational risk management partially mediate the relationship between human capital and organizational performance. The research recommends that the intervention role of the management control system and operational risk management has shown to impact positively on organizational performance and human capital. Therefore, the implementation of a management control system and operational risk management must be paramount to the achievement of organizational performance from the viewpoint of chartered accountants in Ghana. Keywords : Human Capital, Operational Risk Management, Management Control System, Organizational Performance. DOI: 10.7176/RJFA/11-10-08 Publication date: May 31 st 2020
Formulating a Weed-Suppressive Bacterium in “Pesta”1

“Pesta” is a granular, extruded product made from a cereal grain flour and any biological control agent. A strain of Pseudomonas fluorescens, BRG100, which is a pathogen of green foxtail, has been formulated into a Pesta product. P. fluorescens BRG100 survived processing best in oat flour, and the addition of 20% (wt/wt) maltose extended the shelf life of the product to more than 32 wk. Field studies of 8-wk duration showed that a Pesta product containing BRG100 suppressed green foxtail emergence by as much as 90%. An optimally formulated and processed Pesta product has potential for the biocontrol of green foxtail. Nomenclature: Pseudomonas fluorescens; green foxtail, Setaria viridis (L.) Beauv. #3 SETVI; oats, Avena sativa L. # AVESA. Additional index words: Biological control, encapsulation, lactose, maltose. Abbreviations: cfu, colony-forming units; DRB, deleterious rhizobacteria.
Multiple Input-Terminal Voltage Multiplier Circuit

Voltage multipliers (VMs) are widely used in applications with the high-voltage-gain rectifiers and dc/dc converters with the capability of increasing voltage conversion ratio. Currently, all the existing VM circuits are designed with two input terminals, while the optimal design on the voltage conversion ratio and voltage stress on the semiconductor devices of the converters with VMs can be achieved by varying the number of basic VM units. However, as the number of its input terminals is fixed and, thus, the current stress on the semiconductor devices are not adjustable at the design stage, such circuits have limited applications in today's high-power energy conversion systems. In order to address such drawbacks of the conventional VMs, a multiple input-terminal VM (MIVM) circuit is proposed in this article. The analysis of the operation principles and the performance characteristics of the proposed MIVM circuit are presented in detail. As an example, the application of the MIVM with the traditional boost converters is presented and discussed, and the efficacy of the theoretical analysis is validated experimentally.
Productive Welfare Policy: An Innovative Way in Social Safety Net in Malaysia

The Productive Welfare approach has been widely used in western countries to help the poor to be independent without depending on the government’s aid. Malaysia is also among the countries that adopting the approach as it is in line with the government’s aspiration through the National Key Result Areas (NKRA), which is to raise the income level of the low-income group. The Social Welfare Department's statistics show that their monthly beneficiaries are increasing from year to year and indirectly increase the financial implications of the Government's annual financial expenditure. This issue ponders more questions on matters pertaining to the initiatives undertaken by the Malaysian Social Welfare Department (SWD) in mitigating this issue effectively. For this reason, the primary objective of this concept paper is to analyze the effectiveness of the programs embedded in the Malaysian Productive Welfare Policy. Hence, this paper concludes that a thorough understanding of Productive Welfare programs is important for the government and citizens to develop necessary actions precisely for a B40 group of people alongside also strategizing on ways to propel forward to be a prosperous nation by 2030.