Miracle-dz/UniFAR-FTUs huggingface dataset:
Design and Development of an Online Video Enhanced Case-Based Learning Environment for Teacher Education

People generally prefer to use stories in order to provide context when expressing a point. Spreading a message without context is unlikely to be meaningful. Like stories, cases have contextual meaning and allow learners to see a situation from multiple perspectives. The main purpose of the present study was to investigate how to design and develop an authentic, online case-based learning environment to provide preservice teachers with the opportunity to practice their skills in real-life situations. The study employed an action research method, a form of qualitative approach. 32 pre-service teachers participated in an online, video-enhanced, case-based learning environment known as VOCABLE. Three action research cycles were conducted and at the end of each cycle, data were gathered through interviews and questionnaires. The qualitative data were analyzed using descriptive and content analysis techniques using Nvivo8 qualitative data analysis tool. The results indicated that six main factors contributed to the authenticity of the cases: commonness, providing different perspectives, filling emotion, holding experience, reflecting social facts and being multimedia. Almost all pre-service teachers (96%) agreed that getting experts’ solutions was very helpful. They also emphasized the value of peer evaluation and online discussion. Keywords: Online Learning, Action Research, Case-based Learning, Teacher Education
Intellectual capital management: An approach to organizational practices in Ecuador

Purpose: The present study has as its aim to identify the organizational management practices that involve intellectual capital as facilitators of innovation in its diverse formats, in Ecuador-based shrimp exporting companies. Design/methodology: The research of a qualitative nature was based on the Grounded Theory as a support for data analysis and collection. The personal interview was used in order to obtain the text corpus. The five resulting clusters served as the basis to apply inductive processes: open coding; axial coding; and selective coding, as a methodological activity meant to help interpret concepts and relationships. Findings: The organizational practices associated with intellectual capital in shrimp exporting companies are focused on structural and human capital management, where innovation has developed from the demands for the implementation of quality management systems in accordance with international regulations. Research limitations/implications: The main contribution made by the present study lies in establishing a primary reference framework for the design of strategic alternatives that involve strengthening intellectual capital as a way to generate sustainable competitive advantages in the companies belonging to this sector. Social implications: Shrimp exports, which stand out for being one of the most significant sources of income in Ecuador, contribute to local development by means of employment generation, mainly in rural communities. The exposure to organizational routines linked to intellectual capital provides a chance to come closer to the reality of this sector. This can prove useful for executives and public policy managers to prioritize an approach which influences the generation and maintenance of competitiveness at a firm level, and also impacts on the development of the regions where such business are located. Originality/value: Faced with the absence of works applied to this sector, the present work explores the reality of shrimp exporting companies, seeking to define a framework for the understanding of intellectual capital management, which might eventually imply a reference point for the design of strategies aimed at strengthening competitive positioning.
A review of related literatures on the leader's core self-evaluations and the followers' organizational commitment: The mediating roles of transformational and ethical leaderships

This literature review strives to assess the higher educational institutions’ leaders and their positive core self-evaluations [CSEs] adherence to and personification of transformational leadership [TFL] and ethical leadership [EL] behaviors that transcend self-interest that may in turn be emulated and reciprocated by their followers. By doing so, the latter accomplishes their duties and responsibilities beyond the minimum level of expectations set to them through organizational commitment. To understand the leader’s CSEs as a possible antecedent of specified outcome variable of the followers’ OC with the mediating roles of TFL and EL, it is necessary to examine previous relevant studies. Thus, this literature review evaluates the theories of leadership constructs in the framework of the leader’s CSEs, TFL, EL, and the followers’ OC.
Method for security enhancement of audio information in communication multimedia systems and networks applying encryption algorithm with public key

In this article it will be analyzed the characteristics of the RSA algorithms for generation of public and private keys used by the cryptosystems in order to ensure the confidentiality, authenticity and integrity of the audio information exchanged between different communication points. For that purpose it will be used the resources provided by the Java JDK 1.8. 0_71 programming language with which practically will be shown the advantages and disadvantages of this algorithm.
How Effective are Firms' E-Marketing Tools?

Competition in cyberspace is becoming more intense. With vast information available on the Internet consumers may easily switch at low cost, thus gaining higher bargaining power in the electronic marketplace. In turn, companies have sought to use information technology, such as the Internet to improve service quality. In this instance, the Internet serves as electronic marketing (e-marketing) tools to a company. This study attempts to investigate the extent to which the use of e-marketing tools helps to influence customers' intention to return leading to increased retention rates. As such, questionnaire surveys were used to gather consumers' perceptions toward the Internet as a shopping medium. The results show that personalization, online community, integrated channels and online rewards influence consumer retention on the Internet. We discuss the results and suggest some directions for future research.
CACIC 2005 - XI Congreso Argentino de Ciencias de la Computaci´ on Workshop de Agentes y Sistemas Inteligentes (WASI) Adaptive Decision Making Systems

Given a population of classifiers, we consider the problem of designing highly compact and error adaptive decision making systems. A selection approach based on misclassification diversity and potential cooperation among classifiers is proposed. The compactness constraint allows us the efficient implementation of fuzzy integral combination rules regarding both the interpretability of fuzzy measures and low complexity of fuzzy integral operator. Experimental results show the feasibility of our approach.
Spectroscopic evolution of massive stars on the main sequence

Context. The evolution of massive stars depends on several parameters, and the relation between different morphological types is not fully constrained. Aims. We aim to provide an observational view of evolutionary models in the Hertzsprung–Russell diagram, on the main sequence. This view should help compare observations and model predictions. Methods. We first computed evolutionary models with the code STAREVOL for initial masses between 15 and 100 M ⊙ . We subsequently calculated atmosphere models at specific points along the evolutionary tracks, using the code CMFGEN. Synthetic spectra obtained in this way were classified as if they were observational data: we assigned them a spectral type and a luminosity class. We tested our spectral classification by comparison to observed spectra of various stars with different spectral types. We also compared our results with empirical data of a large number of OB stars. Results. We obtain spectroscopic sequences along evolutionary tracks. In our computations, the earliest O stars (O2-3.5) appear only above ~50 M ⊙ . For later spectral types, a similar mass limit exists, but is lower. A luminosity class V does not correspond to the entire main sequence. This only holds for the 15 M ⊙ track. As mass increases, a larger portion of the main sequence is spent in luminosity class III. Above 50 M ⊙ , supergiants appear before the end of core-hydrogen burning. Dwarf stars (luminosity class V) do not occur on the zero-age main sequence above 80 M ⊙ . Consequently, the distribution of luminosity class V in the HR diagram is not a diagnostic of the length of the main sequence (above 15 M ⊙ ) and cannot be used to constrain the size of the convective core. The distribution of dwarfs and giants in the HR diagram that results from our calculations agrees well with the location of stars analyzed by means of quantitative spectroscopy. For supergiants, there is a slight discrepancy in the sense that luminosity class I is observed slightly earlier (i.e., at higher T eff ) than our predictions. This is mainly due to wind densities that affect the luminosity class diagnostic lines. We predict an upper mass limit for dwarf stars (~60 M ⊙ ) that is found consistent with the rarity of O2V stars in the Galaxy. Stars with WNh spectral type are not predicted by our models. Stronger winds are required to produce the characteristic emission lines of these objects.
Fatigue Life Prediction of Lower Suspension Arm Using Strain-Life Approach

This paper presents the fatigue life behaviour of lower suspension arm using strainlife approach. The main objectives of this study are to predict the fatigue life and identify the critical location and to select the suitable materials for the suspension arm. Aluminum alloys are selected as a suspension arm materials. The fatigue life predicted utilizing the finite element based fatigue analysis code. The structural model of the suspension arm was utilizing the Solid works. The finite element model and analysis were performed utilizing the finite element analysis code. In addition, the fatigue life was predicted using the strainlife approach subjected to variable amplitude loading. The three types of variable amplitude are considered in this study. TET10 mesh and maximum principal stress were considered in the linear static stress analysis and the critical location was considered at node (6017). From the fatigue analysis, Smith-Watson-Topper mean stress correction was conservative method when subjected to SAETRN loading, while Coffin-Manson model is applicable when subjected to SAESUS and SAEBRKT loading. From the material optimization, 7075T6 aluminum alloy is suitable material of the suspension arm. Fatigue Life Prediction of Lower Suspension Arm Using Strain-Life Approach 438
Effects of Various Levels of Cassava Hay on Rumen Ecology and Digestibility in Swamp Buffaloes

Four, mature rumen fistulated male swamp buffaloes with an average initial weight of 426′25 kg were randomly allocated to receive dietary treatments according to a 4x4 Latin square design. Four dietary treatments with varying proportions of urea-treated rice straw (UTRS) and cassava hay (CH) were offered (100:0, 75:25, 50:50, 0:100). Each feeding period lasted 21 days, the first 14 days for feed adjustment and intake measurement and the final 7 days for rumen fluid and faecal collections. The results demonstrated the potential use of both UTRS and CH as roughage sources. As levels of CH increased in the diets pH values were maintained (6.5-7.0). Ruminal NH 3 -N concentrations were significantly (p<0.05) raised as higher levels of CH were incorporated into the diets. Moreover, cellulolytic and proteolytic bacterial populations were enhanced while total protozoal counts were decreased (p<0.05). In addition, DM, OM and CP digestibilities and their digestible intakes as well as estimated energy increased with increasing levels of CH in the diets. The results suggest a favorable effect of CH substituting for UTRS.
Biosynthesis and characterization of silver nanoparticles: Its use for bacterial detection

In this study; we have designed a Silver nanoparticles (AgNps) based piezoelectric Quartz crystal microbalance (QCM) AgNPs were synthesized and were coupled with anti sera of S. typhimurium. Coupled AgNps were characterized by TEM and FITR In TEM micrographs; we have observed spherical of AgNPs at the range ~50nm diameter Developed immunosensor for S typhimurium QCM has showed good reactivity and specificity towards its antigen of S. typhimurium; also showed decrease in frequency with respect to incubation time. The developed methodology is effective; selective; inexpensive and reproducible for the detection of S. typhimurium and a further step forwards towards development of point of care technology for the detection of bacteria Moreover; we have also demonstrated that the efficacy and sensitivity of sensors could be increased by immobilization of functional nanoparticles on the surface of quartz crystal
Removal of the Selected Pesticides from a Water Solution by Applying Hollow Fiber Liquid−Liquid Membrane Extraction

A supported liquid membrane extraction of different pesticides (acetamiprid, dimethoate, imidacloprid, linuron, and tebufenozide) from an aqueous solution containing 20 mg dm–3 of each pesticide by 5% TOPO (tri-n-octylphosphine oxide) in DHE (di-n-hexyl ether) has been investigated in a hollow fiber contactor having an aqueous feed/organic interfacial area of 15.4 cm2. In a single-pass operation, the maximum removal efficiency of 95% was achieved for the most nonpolar (log P = 4.38) pesticide tebufenozide at the feed flow rate of 0.5 cm3 min–1. The diffusion through the boundary layer of the feed stream was a rate-controlling step in the extraction of nonpolar pesticides (linuron and tebufenozide) with a mass-transfer coefficient in the feed stream being proportional to the feed flow rate raised to the power of 0.51–0.57. The maximum overall mass-transfer coefficient based on the feed phase of KF = 0.18 cm min–1 was obtained for tebufenozide at the feed flow rate of 1.8 cm3 min–1. The organic phase entrap.
Possessing a poor anaerobic capacity does not prevent the diel vertical migration of Nordic krill Meganyctiphanes norvegica into hypoxic waters

During their diet vertical migration in the Gullmarsfjord (Swedish west coast) Nordic krill Meganyctiphanes norvegica made excursions into regions of severe hypoxia, >70 m depth, during the day. Consequently, we investigated the capacity for anaerobic metabolism by M. norvegica and the extent to which they utilize this capacity in the field. L-lactate was the main end-product of anaerobic metabolism. The concentration of L-lactate in the haemolymph ([lactate] HL ) under conditions of acutely declining pO 2 only increased below 4 to 6 kPa. During anoxia, no krill survived >1 h and accumulation of L-lactate was at its most pronounced. Handling stress had little effect on [lactate] HL . Field observations (January 1998) showed that during the day krill resided at a depth of 65 to 85 m (pO 2 = 3 to 10 kPa). Net cages were stocked with krill, trawled from 60 to 70 m depth at dusk, and then kept overnight at 40, 70 and 90 m depth (pO 2 >14, 6.1 and 1.8 kPa respectively). This resulted in krill mortality of 7, 70, and 100% respectively. While individuals caged at 40 m showed [lactate] HL no greater than that of normoxic laboratory individuals (3.04 ± 1.05 mmol l -1 ), survivors at 70 m showed elevated concentrations (9.91 ± 1.68 mmol 1 -1 ). Furthermore, newly trawled krill (at dusk) had [lactate] HL = 7.18 ± 2.72 mmol 1 -1 , indicating that, like the caged individuals at that depth, they too had resorted to anaerobic metabolism. This study has shown that while anaerobic metabolism is not well developed in M. norvegica, individuals do enter bodies of water where the pO 2 is below that required to maintain aerobic metabolism. Utilization of anaerobiosis seems to be critical to the ability to enter such O 2 poor water although the krill are close to the limits of their physiological capacity at such times.
A study on the relationship between international trade and food security: evidence from less developed countries (LDCs).

Hunger and poverty are main critical issues in less developed countries (LDCs) and can be attributed to the fact that almost 70% of the LDC populations are employed in the agricultural sector. Although the international trade can reduce food insecurity in LDCs, for example, facilitating the access to larger markets, the volatility in food prices since the late 2000s has negatively aff ected the food availability. Th is study examines the eff ects of trade on the food security and traces a U-shaped relationship between two variables, using 2000–2010 panel data for the LDCs. Th e results are robust across different methods and show that the food security decreases in the initial stages of the trade expansion but increases beyond a given threshold. Th e key fi nding of this study is the U-shaped relationship between trade and food security, which suggests that the policy makers should pay more attention to expanding investments in the agricultural productivity, particularly from the viewpoints of the self-suffi ciency and self-reliance.
Brazil and China in Mozambican Agriculture: Emerging Insights from the Field

Mozambique, a country undergoing rapid transformations driven by the recent discovery of mineral resources, is one of the top destinations for Chinese and Brazilian cooperation and investment in Africa. This article provides an account of the policies, narratives, operational modalities and underlying motivations of Brazilian and Chinese development cooperation in Mozambique. It is particularly interested in understanding how the engagements are perceived and talked about, what drives them and what formal and informal relations are emerging at the level of particular exchanges. The article draws on three cases (1) ProSavana, Brazil's current flagship programme in Mozambique, which aims to transform the country's savanna, spreading along the Nacala corridor, drawing on Brazil's own experience in the Cerrado; (2) the Chinese Agricultural Technology Demonstration Centre (ATDC); and (3) a private Chinese rice investment project in the Xai‐Xai irrigation scheme, which builds on a technical cooperation initiative. Commonalities and differences between the Brazilian and Chinese approaches are discussed.
ANGULAR ALIGNMENT OF THE LHC INJECTION PROTECTION STOPPER

Machine safety depends critically on the correct setup of the protection elements. One of the injection protection elements consists of exceptionallylong jaws (4 m). An angular offsetof thejaws couldaffectsignificantlythe measured beam size and, as a consequence, the correct setup with respect to the beam. Dedicated studies and cross-calibrations have been performed to quantify the effect of tilts and offsets on the setup of this stopper and to check the provided passive protection.
Worldviews: The Spatial Ground of Political Reasoning in Dutch Election Manifestos

A discourse approach was developed to identify explicit perspectivisation afforded by conceptual and narrative structures in political texts. The hypothesis is that the ground perspective of political rationale is packaged in ‘worldviews’ that guide ideologically motivated attitudes. This pilot study focuses on finding the ground of such discursive rhetorical structures in spatial representation as a method to distinguish party profiles. The cognitive motivation for a discursive worldview approach lies in theory of spatial cognition its relation to language and thought (Levinson 2003). Without claiming that language mirrors thought, we assume that discourse spaces suggest boundaries that give structure to the way we think and feel about the complex world we experience. In a narrative sense these spatial frames of reference make speculative assumptions about the future that sound ‘right’, as seen from a particular deictic point of view. These subjective worldviews suggest text-intrinsic causal relations by metaphorically mapping attitude on real time and space dimensions. This cross-over of real space and subjective mental space links attitude with the real time and space in which we share knowledge and experiences. The hypothesis is that the time and space in which worldviews are based is indicative of rational as well as affective characteristics of party positions. A discourse space model (Chilton 2004) was developed for the annotation of time, space and modality markers in Dutch election manifestos to identify differences between the discourse space of politically motivated worldviews. Results were compared with a content analytic study for party positioning using the same data. The TSM model is being designed for meaning-based party positioning on political dimensions.
Quantitative investigation of leaf photosynthetic pigments during annual biological cycle of Vitis vinifera L. table grape cultivars.

Variations in chlorophyll a/b and chlorophyll/carotenoid ratios are indicators of senescence, stress or damage to the photosynthetic apparatus and affect the normal course of plant biological processes. The aim of this work was to investigate the chlorophyll (a and b) and carotenoid content and ratios in the leaves of four Vitis vinifera L. table grape cultivars in the main phenophases of the annual biological cycle. During the annual cycle, the moisture content of the leaves decreased significantly (up to 21%), along with a reduction in leaf area and perimeter. Chlorophyll a and b showed a continuous accumulation until grape veraison, with lower values of the Chl a/b ratio at the beginning of the vegetative period. Carotenoids continued their biosynthesis until grape ripening (for another 30 days), at which stage there was a significant decrease in the chlorophyll/carotenoid ratio (2.62 ± 0.31). At veraison, peroxidase had the most intense activity (0.20 to 0.51 U/mg), possibly because of involvement in chlorophyll degradation, while total phenolic content started to decrease. Grape veraison could be regarded as the starting point of foliage senescence. Moreover, the relationship between total chlorophyll (by extraction) and chlorophyll content index (non-destructive method) was very significant (R2 = 0.92). These results contribute to a better understanding of foliar pigment dynamics and the timing of their decline in order to define the behaviour of table grape cultivars during the annual biological cycle.
The Current State of Online Supermarket Usability in Australia

The prediction of a dramatic increase in online grocery shopping over the next five years is only likely to be fulfilled if online supermarkets present a more efficient and logical shopping experience. Therefore, usability testing is playing an increasingly important role in the development of e-commerce websites. To date, ecommerce usability research has only focused on the ordering of singular items and the issue of multiple item ordering has not been researched. This study aims to start to fill this gap in usability research. Based on the results gathered, a set of ten usability criteria were established, with a focus on the ordering systems for sites selling multiple items and quantities