Miracle-dz/UniFAR-FTUs huggingface dataset:
Sm-Nd and Rb-Sr Datings, Petrogenesis and Thermometry of the Ngovayang Area (South-West Cameroon): Isotopic Data Insight of Recycling Crust and Convergence Orogen

The Ngovayang trondhjemitic gneisses belong to the Nyong Complex at the Northwest boundary of the Ntem Complex. A combined study of whole-rock major, trace elements and isotopic data, Sm-Nd and Rb-Sr indicate that trondhjemitic gneisses are peraluminous and range from weakly I-type to S-type with nearly constant A/CNK values between 1.04 and 1.24. Their I- and S- type characters suggest that juvenile materials have been partially remobilized or recycled. These trondhjemitic gneisses have slightly to moderate MgO, Cr and Ni contents, ISr (0.703677 - 0.741911) and low eNd(t) (from -16.48 to -10.6) values. Such geochemical features suggest a small mantle-source contribution, coupled with assimilation of some upper and lower crustal materials and indicate the implication of old crust probably with both Archean and Early eburnean origin (2597 - 2318 Ma). They also exhibit geochemical features typical of calc-alkaline, crustal contaminated calcalkaline rocks, volcanic arc and trondhjemitic nature. These results show that old crust has recycled and trondhjemitic gneisses are linked to convergent geodynamic system. The petrogenetic diagrams of AFM vs CFM, MgO vs SiO2 and Rb/Ba vs Rb/Sr and lower K2O/Na2O ratio values (0.38-0.51), indicate that the magmatic source materials are mainly composed of plagioclase-rich sources such as metagreywackes - metabasic mixtures, metagreywackes and metabasics and basalt or igneous rocks. These sources materials occurring in the melt originated from both slab melting and assimilation of upper and lower crust at ca. 732.4 - 928.7°C and at 2597 - 2318 Ma. This study shows that Archean crust may have a North-West extension beyond the actual boundary with Nyong Complex.
Effects of Aluminum in the striped venus clam, Chamelea gallina

Aluminum is the most abundant metal in the Earth's crust and is widely used in everyday life. In sea waters, the presence of dissolved Al is naturally limited to a few micrograms per litre, however anthropogenic activities tend to alter its concentration. Toxic effects caused by this metal have already been demonstrated on several taxa, as well as a direct correlation with various diseases, including neurodegenerative ones. Since bivalves proved good bioindicators for environmental and possibly human health, we tested by histochemical methods the effects of Aluminum on the muciparous tissues of the striped venus clam, Chamelea gallina. Aluminum chloride at concentrations of 25, 50, and 200 µM, respectively were administered to experimental groups of twenty clams housed under controlled conditions. Image analysis of tissues stained by conventional and lectin-histochemistry indicated both qualitative and quantitative alterations of the mucous secretion produced by the gills and feet epithelia of the clams. The acidity and viscosity of the mucus itself is altered, with possible repercussions on the health and survival of animals.
Time-varying Crash Risk: The Role of Market Liquidity∗

We estimate a continuous-time model with stochastic volatility and dynamic crash probability for the stock market index and find that market illiquidity dominates other factors in explaining the stock market crash risk. While crash probability is time-varying, its dynamic depends only weakly on return variance once we include market illiquidity as an economic variable in the model. This finding suggests the relationship between variance and crash risk found in the literature is largely due to their common exposure to market liquidity risk. Our study highlights the importance of market-trading friction in index return dynamics and explains why prior studies find that crash risk increases with market uncertainty level. JEL Classification: G01, G12
Modelling of Anguilla anguilla production and silver eel escapement for the River Severn , compliance with targets and development of management plans

The River Severn catchment supports the largest glass eel fishery in the UK, with a current annual catch of around 10 t. Since the 1980s, there has been a decline in the catch and CPUE (an index of recruitment) of glass eel of ~70%, with the main decline happening in 1983/1984. Yellow and silver eel fisheries in the Severn catchment are negligible. Comparison of the results of eel-specific surveys undertaken in the late 1990s and between 2002 – 2004 with those during the early 1980s indicates that there have been no significant overall changes in eel distribution, density, biomass or size structure of the eel population in the Severn. This suggests that escapement of silver eels is similar to that during the late 1970s and early 1980s, when the glass eel fishery was much larger (~40 t). The European Commission Eel Recovery Plan requires that Member States develop management plans in order to ensure at least 40% of the potential escapement of silver eels Anguilla anguilla is achieved in a River Basin District (WFD). However, as eel production and silver eel escapement is not measured in most catchments, a modelling approach is required to estimate potential and actual escapement, and to assess the likely effects of
Effects of Soil Physical and Mechanical Properties on Field Efficiency of Ox-drawn Mouldboard plough in Yola , Adamawa state

An assessment of the effects of soil physical and mechanical properties on field efficiencies of Ox-drawn mouldboard plough was conducted in four (4) sub-locations within Yola environment, between May and July, 2005. Soil samples, taken at 15-20 cm depth and under four (4) moisture regimes (10, 15, 20 and 25%) by means of auger were put into polyethylene bags and properly labeled. The soils were investigated for relevant properties (bulk density-δb, moisture contentM.C., texture, consistency) following laboratory procedures. The data were statistically compared using the Student’s t-test. The mouldboard plough efficiencies at various soil M. C. varied significantly (P=0.05) among the soil units at differing compaction limits (1.35-1.50 Mgm). Effective field capacity-EFC, was highest (0.133 ha/h) in Sabon-gari and lowest (0.112ha/h) in Futy demonstration farm-FDF at the same soil M.C. (25%). Lowest time losses of 13 and 14 minutes was at 10 and 25% soil M. C. in Sabon-gari with relatively lower (1.35 Mgm ) soil compactions. In view of the results obtained, it suffices to recommend that ox-drawn mouldboard plough utilization should be encouraged in areas with low soil compaction (i.e., 1.35 Mgm) and up graded into multiple bottoms implement for team of animal traction, as it effectively conserves valuable physical and mechanical soil properties.
Enhancing Resilience of Schools in the Netherlands : Generating Teacher Voice 1

Often schools in the Netherlands lack the resilience to meet the new challenges of society and improve learning outcomes of students. School leaders and policy makers try to change this with a focus on content (textbooks, curricula), procedures (schedules, testing) and/or the organizational learning. This learning as an organization hampers often. The dominant approach leaves underlying mechanisms, like the common organizational structure, unattached. These mechanisms (co)produce teachers who work in isolation and reduce professional agency. As a consequence most change efforts fail. This paper proposes an idea, based on practical experience and a social complex adaptive system approach: improve classroom performance by enhancing the likelihood of peer-to-peer encounters outside the classroom via certain team structures. This might stimulate professional learning and development and propensity to change. Based on experience as a school leader and consultant, the first author designed an orientation base (Engeström 1994; Vermaak 2009) for such a team based organizational structure for school leaders: a set of building blocks. This orientation base has been strengthened by theory and practice. In a series of case studies the use of this orientation base by school leaders and the effects on the practices of teachers in different schools has been investigated. The paper reports some findings of this research and proposes some improvements and extensions of the orientation base.
An IS 900-like sequence in Mycobacterium porcinum strains isolated from bovine bulk milk : implications for diagnosis

The insertion sequence IS900 was considered highly specific for Mycobacterium avium subsp. paratuberculosis (MAP) until the discovery of IS900-like elements in mycobacteria other than MAP. Nevertheless, IS900 PCR still remains widely used as a diagnostic tool because this event is considered extremely rare. 631 bulk milk samples from different dairy herds were analysed by culture over a 7 month period (August 2004 – February 2005); suspect colonies were confirmed by IS900 PCR and mycobactin dependency. All of 56 suspect isolates chosen on the basis of the colony morphology were positive for IS900 by PCR. Of these, 4 (7.1%) were confirmed as MAP through mycobactin dependency and 52 (92.9%) were mycobactin-independent mycobacteria not identified as MAP by restriction endonuclease analysis of the amplified products. Sequencing analysis of the amplified fragment obtained from six of these mycobactin-independent isolates revealed a 74.4% homology with the MAP IS900 element. Twenty-one isolates subjected to further investigation using PCR-restriction fragment length polymorphism analysis (PRA) of the hsp65 gene were identified as Mycobacterium porcinum. Six of these strains underwent 16S rRNA gene sequencing by MicroSeq 500 16S ribosomal DNA (rDNA)-based bacterial identification system (Applied Biosystems); sequence analysis by MicroSeq database system confirmed the identification of M. porcinum with 100% homology. Based on these results, IS900-like elements could be more widespread than was previously thought. An IS900 PCR positive result is not sufficient to identify MAP. Particularly when analysing milk, isolate identification should always include other microbiological (mycobactin dependency, slow growth) or molecular (enzymatic digestion of amplified products, amplification of other genomic target) methods.
Broiler Slaughter Weight Forecasting using Dynamic Neural Network Models

The global broiler meat demand is expected to steadily increase, which motivates the need for better broiler production monitoring, planning, and optimization tools. This paper is concerned with negatively biased broiler weight measurements onwards of day 15-21, which is a known but unsolved problem in state-of-the-art industrial broiler production. By introducing and emphasizing the accurately measured broiler slaughter weight during training of a dynamic neural network, the root mean squared slaughter weight forecasting error was reduced from 162. 4g to 65. 4g on more than 4.5 years of state-of-the-art industrial production data. This paper furthermore provides insight into effective algorithm settings.
Modelling dynamic effects of fishery on odontocetes through a food-web modelling approach in the Gulf of Taranto (Northern Ionian Sea)

This study is the first attempt at applying the Ecosim modelling approach to explore temporal effects of fishing effort (FE) changes on the odontocetes in the food web of the Gulf of Taranto. The implementation of the Ecosim approach was performed on the existent Ecopath food web model realized for an area covering 7745 km2in the Go $T$. The food web was described by 58 functional groups and 5 fishing gears, focusing the attention on four odontocetes: Stenella coeruleoalba, Tursiops truncatus, Grampus griseus, and Physeter macrocephalus. A total of 67 time series based on biomass (35) and fishing catches (32) were used to fit the model during the calibration step, adopting both the automated stepwise and manual fitting procedure. The best model selected was used to run the two decades forward projecting simulations (2018–2035) to predict the biomass of odontocetes, setting three different scenarios based on 1) constant FE as 2018 (baseline); 2) FE+25% between 2019 and 2023; 3) FE -25% between 2019 and 2023. T. truncatus showed an increase in biomass of 30.4% between 2018 and the endpoint in the baseline scenario, and it was the only species showing relevant differences in biomass between the three scenarios, with a decrease of 3.8% and an increase of 4.3% in the scenarios FE+25% and FE-25%, respectively, compared to the baseline. S. coeruleoalba, G. griseus, and P. macrocephalus did not show any notable difference in biomass between the three scenarios at the endpoint of simulations. The scenario analysis underlines how changes in cetacean abundances could be influenced by fisheries through indirect prey controls determined by patterns of trophic interactions at different levels of intensity. Although an improvement in the fitting strategy and the representation of environmental data should be carried out, this Ecosim model can be considered a baseline to set future scenarios addressed to the conservation measures for cetaceans.
RELATIONSHIP BETWEEN INNOVATION AND PERFORMANCE : IMPACT OF COMPETITIVE INTENSITY AND ORGANIZATIONAL SLACK

Innovation is a key factor in organizational performance. Although there are references from strategic theory to understand the relationships between these two variables, there are still many gaps that need to be filled. Thus, more empirical validation is necessary. This study aimed to verify how the relationship between innovation and performance is affected by the presence of precursor variables such as competitive intensity and organizational slack. This study involved conducting explanatory and cross-sectional investigations by applying structural equation modeling to a sample of small and medium-sized enterprises in Bogotá, Colombia. The results make a relevant contribution to the literature on strategic management by showing that competitive intensity and organizational slack induce innovation and positively impact performance.
southern Armenia , Lesser Caucasus

In this contribution, we focus on the Oligocene to Miocene structural evolution of the giant Kadjaran porphyry Cu-Mo deposit and its epithermal overprint. This evolution was controlled by long-lived regional faults during the Cenozoic tectonic and magmatic evolution of the Meghri-Ordubad composite pluton located in the southernmost Lesser Caucasus. We discuss the ore-bearing fracture network characteristics related with the deposit-scale ore-controlling structures in the frame of regional strike-slip faults. Stereonets summarizing the orientations of different generations of mineralized veins allow us to constrain the favorable fracture network environment for ore-formation at the giant Kadjaran deposit. During the middle late Oligocene, NNE-oriented shortening created the major ~N-Sand NE-oriented steeply dipping ore-controlling deposit-scale faults under dextral strike-slip tectonics. The gently to moderately dipping NE-, ~N-Sand ~E-W-oriented fracture networks along the steeply dipping deposit-scale faults were the most important structural control for the emplacement of the main porphyry stockwork [. ] HOVAKIMYAN, Samvel, et al. Structural control and tectonic environment of the Cenozoic giant Kadjaran porphyry Cu-Mo and epithermal system, southern Armenia, Lesser Caucasus. In: Proceedings of the 15th SGA Biennial Meeting. 2019. p. 943-946
Male gametophyte fragmentation in Laminaria digitata : a life history strategy to enhance reproductive success

An understanding of the life history of Laminaria digitata is crucial to implementing efficient management practices that can ensure the persistence of the kelp forest. L. digitata shows an obligate haplo-diplont heteromorphic life cycle with alternation of a large sporophyte and dioecious microscopic gametophytes. The study of growth and reproduction in culture conditions demonstrated different strategies in male and female gametophytes: Males grew vegetatively and reproduced simultaneously, whereas females stopped growing after reproduction. In addition, we demonstrated that males were able to fragment to give new gametophyte individuals. These results suggest that male and female gametophytes have developed two contrasting reproductive strategies with semelparous females and iteroparous males enhancing the reproductive success of the species. Résumé : Fragmentation des gamétophytes mâles chez Laminaria digitata : une stratégie pour augmenter le succès reproductif. La compréhension du cycle de vie de Laminaria digitata est primordiale pour assurer le maintien des forêts de laminaires et pour mettre en place les outils de gestion appropriés. L. digitata présente un cycle hétéromorphe avec alternance d’individus haploïdes (les gamétophytes microscopiques mâles et femelles) et diploïdes (les sporophytes de grande taille). L’étude de la reproduction et de la croissance des gamétophytes en culture montrent différentes stratégies : les mâles continuent à croître végétativement après la production de gamètes tandis que les femelles stoppent leur croissance végétative après la reproduction. De plus, nous avons montré que les mâles étaient capables de se fragmenter pour donner de nouveaux individus. Ces résultats suggèrent que les mâles et les femelles ont développé deux stratégies opposées : des femelles semelpares qui favorisent la production rapide de nouveaux sporophytes et les mâles itéropares qui assurent la dispersion et augmentent leur succès reproductif.
Sources of Mathematics Self-Efficacy in Chinese Students : a Mixed-Method Study with Q-Sorting Procedure

Understanding the development of mathematics self-efficacy has important implications. Based on Bandura’s four sources of self-efficacy, most previous studies mainly examined whether the sources predicted or correlated with mathematics self-efficacy, which might have oversimplified the underlying mechanism of self-efficacy development. This study conducted an in-depth investigation into the sources of mathematics self-efficacy of Chinese junior high school students. A mixed-method approach was adopted, which incorporated semi-structured interview with the BQ-sorting^ procedure. Twelve Chinese students (6 boys and 6 girls, mean age 13.2 years) were purposely selected based on gender and their mathematics self-efficacy levels. Findings showed that students with either high or low self-efficacy not only experienced different degrees of exposure to the sources of self-efficacy but also held diverse viewpoints about the effects of each source on their mathematics self-efficacy. Girls recalled receiving more social persuasion and experiencing more anxiety than boys in mathematics learning. Yet, girls’ perceptions of the influence of each source were not significantly different from boys’. In contrast to previous studies conducted in western contexts, this study demonstrates Chinese students’ different viewpoints about the influence of effort, competition and face issue on their mathematics self-efficacy. Findings of this study shed light on the complex mechanism underlying the development of self-efficacy in mathematics learning.
Reasons for not changing to activity-based costing : a survey of Irish fi rms Martin Quinn

Purpose – This paper aims to report on a survey of medium and large Irish firms to ascertain reasons for not changing to more advanced costing techniques, namely, activity-based costing (ABC). Developments in technology and recent poor economic conditions would suggest that the technique could be adopted more by firms, as they make increased efforts to keep costs under control. Design/methodology/approach – A survey instrument was used to gather data drawing from the top 1,000 Irish firms. From a useable population of 821 organisations, a response rate of 20.75 per cent was achieved. Findings – Findings show a rate of adoption of ABC of 18.7 per cent, which is lower than previous studies in an Irish context. The level of information technology in firms is not a key factor for non-adoption. Instead, the main reasoning for non-adoption revolve around stable existing costing methods, which firms expressed satisfaction with. Originality/value – This research suggests the adoption of ABC is not necessarily driven by external factors such as technology and economic shocks, at least in the context of Ireland. It also suggests that costing techniques may be deeply embedded within organisations and are less likely to be subject to change.
A Dynamic Load Balancing Algorithm for Data Plane Traffic

—There is a worldwide growing demand for high bandwidth, low latency and reliability. Software Deﬁned Network (SDN) emerged a few years ago as a new paradigm, separating the control and the data planes to improve the network management. The SDN concept applies to any type of network and is indispensable in new generations of networks such as 5G. One of the main problems in the data plane is the distribution of trafﬁc. Quality of service (QoS) characteristics such as throughput and latency of each application can be affected by inefﬁcient link balancing. This paper proposes an algorithm for dynamic load balancing the data plane trafﬁc. The load balancing minimizes the effects of intense network data trafﬁc, mitigating bottlenecks. The proposed algorithm dynamically changes the links ﬂows as the network utilization intensiﬁes. The algorithm ﬁnds the shortest paths and calculates the link cost choosing the best link after identifying and kind of bottlenecks. This reduces the latency and the packet loss in scenarios with network congestion. Experiments were conducted using the Mininet and the OpenDayLight controller. Through emulation results, it was observed that there was a signiﬁcant improvement in jitter, packet loss, and throughput. Thus, the proposed algorithm can work in any kind of SDN environment, balancing the data plane trafﬁc ﬂow.
(2017). Further validation of the affective bias test for predicting antidepressant and pro-depressant risk: effects of pharmacological and social manipulations in male and female rats. Psychopharmacology

We studied the social and cognitive performance of piglets raised pre-weaning either in a conventional system with a sow in a farrowing crate (FC) or in a multi-suckling (MS) system in which 5 sows and their piglets could interact in a more physically enriched and spacious environment. After weaning at 4 weeks of age, 8 groups of 4 litter-mates per pre-weaning housing treatment were studied under equal and enriched post-weaning housing conditions. From each pen, one pair consisting of a dominant and a submissive pig was selected, based on a feed competition test (FCT) 2 weeks post-weaning. This pair was used in an informed forager test (IFT) which measured aspects of spatial learning and foraging strategies in a competitive context. During individual training, submissive (informed) pigs learned to remember a bait location in a testing arena with 8 buckets (the same bucket was baited in a search visit and a subsequent relocation visit), whereas dominant (non-informed) pigs always found the bait in a random bucket (search visits only). After learning their task, the informed pigs’ individual search visit was followed by a pairwise relocation visit in which they were accompanied by the non-informed pig. Effects of pre-weaning housing treatment were not distinctly present regarding the occurrence of aggression in the FCT and the learning performance during individual training in the IFT. During paired visits, informed and non-informed pigs changed their behaviour in response to being tested pairwise instead of individually, but MS and FC pigs showed few distinct behavioural differences.