Miracle-dz/UniFAR-FTUs huggingface dataset:
Cuarto Simposio de la Sociedad Española de Investigación en Educación Matemática

The work we present here is an example of a mathematical activity organized by Local Theoretical Models. The research deals with the teaching and learning of the concepts of ratio, proportion and proportionality at the primary School level (grades 3d to 6th), and student’s performances when solving tasks where such concepts are involved. A brief account is also presented of Local Theoretical Models as a methodological and theoretical framework for research in Mathematics Education, and we will try to develop a wide survey of this research, based on the general scheme of this type of research. 1.Modelos teóricos locales Entendemos que la didáctica de la matemática es una actividad matemática que no puede quedarse en un proyecto de estudio sobre los problemas de enseñanza y aprendizaje de la matemática, sino que en ella hemos de considerar también el saber matemático que aprendices y enseñantes desarrollan conjuntamente, así como el uso de los sistemas matemáticos de signos que se utilizan en el intercambio de mensajes –entre aprendices y enseñantes. Esta consideración nos lleva a la necesidad de modelizar el estudio sobre fenómenos didácticos locales para someterlos a experimentación y poder desarrollar situaciones de enseñanza, tanto dentro del laboratorio como en el aula. En este sentido utilizamos el marco teórico y metodológico que, para la observación experimental en didáctica de la matemática, Eugenio Filloy denominó Modelos Teóricos Locales. Dicho marco responde a un estilo de investigación que él inició hace ya años y cuya descripción más detallada puede encontrarse en Filloy y cols. (1999). Los estudios de este estilo parten de una toma de partido teórica por no utilizar teorías generales de la enseñanza, el aprendizaje o la comunicación; por el contrario, se trata de elaborar modelos teóricos locales para dar cuenta de los procesos que se desarrollan cuando se enseña en el sistema educativo Una actividad matemática organizada en el marco de los modelos teóricos locales
Appropriate modelling of conductive losses in the design of magnetic components

An analytical method to calculate the AC resistance of round conductor windings is derived. It is shown that the skin effect and proximity effect are orthogonal to each other, which means that their losses can be calculated separately and then simply added together. It is shown that this method of calculation is inherently much more accurate than a popular existing method using an equivalent rectangular conductor and a one-dimensional cartesian coordinate system solution. <<ETX>>
Efficient Routing for Maximizing Lifetime using Nature Inspired Algorithm in Wireless Sensor Network

Recent advancements in semiconductors and material science technologies give rise to the Wireless Sensor Network (WSN). Latest advances in remote interchanges and hardware have empowered the improvement of minimal effort, low-control, multifunctional sensor nodes that are little in measure and impart untethered in short distances. Nature Inspired Algorithms have been successfully implemented in WSN to address various challenges of it. It provides adaptive mechanisms that exhibit intelligent behavior of nature in complex and dynamic environments in WSNs. Wireless Sensor Network is energy limited. The purpose of the research is to form efficient routes using an algorithm which is inspired by foraging behavior of ants that enhances network lifetime by reducing node‟s energy consumption by selecting the optimal route. The process of establishing paths from a source to a sink across one or more relays is called routing and the route is formed based on the probabilistic rule of Ant Colony Optimization (ACO). The proposed algorithm includes the route discovery and route maintenance process. Our proposed algorithm, obtain more balanced transmission among the nodes and reduce the energy consumption of the routing and therefore extends the network lifetime. KeywordsWireless Sensor Network (WSN); Nature Inspired Algorithm; Ant Colony Optimization(ACO); routing __________________________________________________*****_________________________________________________
Business-IT Alignment Effects on Business Agility

The purpose of this study is to examine the effect of business-IT Alignment effects on business agility. The questionnaire of this study was given to 504 people via online survey who work as a manager in 3 public, 9 private and 16 foreign capital banks in Turkey. 334 valid questionnaires were collected back and analyzed. Corellastion, Regresion and Multiple Regretion analysis were used. According to the findings business-IT alignment has a positive effect on the business agility. As sub dimensions intellectual alignment and business alignment have a positive effect on the business agility. When we look at Business –IT alignment effect on business agility dimensions. It has positive effects on all six dimension of business agility (Agile Values, Technology Workforce, Change Management, Collaboration & Coordination and Flexible Infrastructure.).
Are these connexins compatible and does it matter?

Gap junction hemichannels (connexons) contain 6 subunits, termed connexins (Fig. 1). The complete intercellular channel is formed by the docking of 2 hemichannels. Many studies have examined the properties of expressed channels composed uniformly of individual connexins (homomeric, homotypic channels) and have shown that they differ in properties including unitary conductance, permeabilityselectivity, and gating. Gap junctions can also be formed by the mixing of different connexins. The most common case occurs in a cell that co-expresses multiple connexins, allowing the formation of heteromeric hemichannels and their docking to make a large variety of hetero-oligomeric channels (Fig. 1). A special case of connexin mixing occurs when a cell expressing one connexin isoform encounters a cell expressing a different connexin, allowing the potential formation of a heterotypic channel (Fig. 1). Expression studies have cataloged the members of the connexin family that are compatible or incompatible as partners for heterotypic gap junction channel formation and defined sequence motifs that influence compatibility (reviewed by Koval et al.). Among these studies, conflicting data have been presented regarding the abilities (or inabilities) of connexin40 (Cx40) and connexin43 (Cx43) to form heterotypic gap junction channels. The current study by Lin et al. provides very persuasive data supporting the functionality of Cx40-Cx43 heterotypic channels. Moreover, their characterization demonstrates that of these mixed channels have asymmetric transjunctional voltage gating properties and altered channel conductances. Interestingly, the ability of Cx40 and Cx43 to form heterotypic channels (when paired with each other) was greatly reduced compared to their formation of homotypic channels (when paired with themselves). The formation of Cx40-Cx43 heterotypic channels is of more than academic interest. Studies of connexin distribution (like those by Davis et al.) have shown that there are anatomic locations where a cell expressing predominantly Cx40 (like the cells of the HisPurkinje system) communicates with one expressing predominantly Cx43 (like a ventricular myocyte). Heterotypic gap junction channel formation might well contribute to the delays and diminution of conduction that occur at such sites. It initially seems paradoxical that the formation of Cx40-Cx43 heterotypic channel might hinder, rather than facilitate coupling between these cells. However, in some cases, partial uncoupling leads to an improvement in impulse conduction. Therefore, some authors have speculated that these heterotypic junctions might ensure safe conduction by diminishing coupling at sites (like the Purkinje-myocyte interface) that have a mismatch between a small current source and a large recipient (sink).
The pharmacology of palmitoylethanolamide and first data on the therapeutic efficacy of some of its new formulations

Palmitoylethanolamide (PEA) has emerged as a potential nutraceutical, because this compound is naturally produced in many plant and animal food sources, as well as in cells and tissues of mammals, and endowed with important neuroprotective, anti‐inflammatory and analgesic actions. Several efforts have been made to identify the molecular mechanism of action of PEA and explain its multiple effects both in the central and the peripheral nervous system. Here, we provide an overview of the pharmacology, efficacy and safety of PEA in neurodegenerative disorders, pain perception and inflammatory diseases. The current knowledge of new formulations of PEA with smaller particle size (i.e. micronized and ultra‐micronized) when given alone or in combination with antioxidant flavonoids (i.e. luteolin) and stilbenes (i.e. polydatin) is also reviewed.
Eye movements and pupil dilation during event perception

Human observers segment ongoing activities into events that are reliable across observers [Newtson and Engquist 1976]. Segments can be small ("fine") or large ("coarse") with clusters of fine-grained segments relating hierarchically to coarse segments. Segmentation behaviour occurs even without instruction indicated by neural activity in the Medial Temporal complex (MT+)and Frontal Eye Field (FEF). Similar activation is observed during active segmentation [Zacks et al. 2001]. These two brain regions are known to be active during the processing of visual motion (MT+) and guiding saccadic eye movements (FEF). This, along with behavioural evidence [Zacks 2004], indicates that visual motion may play an important role in identifying events.
Removal of fecal coliforms, somatic coliphages and F-specific bacteriophages in a stabilization pond and reservoir system in arid regions

The contents of FC, somatic coliphages and F-specific bacteriophages were measured in the stabilization pond and stabilization reservoir system of the City of Arad (Israel) in order to determine the efficiency of the treatment process regarding the microorganisms removal. Monitoring was conducted close to one year. Physical and chemical parameters (temperature, pH, BOD 5 , COD, SS) were also analyzed with the aim of finding factors that affect the microorganisms removal. The field results prove a very good performance of this treatment system. FC, somatic coliphages and F-specific bacteriophages were removed between 4.16 and 5.76 log units, during winter and in between 6.02 and 6.47 log units during summer. The microbial quality of the final effluent complies with the WHO guidelines for unrestricted irrigation. The results also indicate that retention time and temperature seem to be the most important factors for microorganisms removal. F-specific bacteriophages were removed at higher rates than FC and somatic coliphages. Consequently, it is suggested that F-specific bacteriophages might be less adequate viral indicators for this treatment system.
What are the motivational factors of foreign line level employees in the hospitality industry in Ireland

This study aspires to identify the motivational factors of foreign employees in the Irish hospitality sector. Specifically, the study examines employees with different nationalities and investigates what motivates them to work in the hospitality area. In order to reach the aims of this study, a qualitative method was used shaped in semi-structured interviews conducted with 8 foreign employees which are employed by different hotels and restaurants in Ireland. This author of this research conducted this study believing that it might be appealing to HR managers from hospitality industry as well as to organisations’ manager working in the same industry.
Helping People Know Whether Measurements Have Good or Bad Implications: Increasing the Evaluability of Health and Science Data Communications

Patients, policy makers, and the public have access to many types of health and scientific data relevant to various individual and societal decisions. Yet, these audiences often struggle with the meaning and the potential usefulness of those data, so they may choose not to engage with the data at all. Scientific and health data are generally difficult to interpret, yet presentations often implicitly assume that the recipient has the necessary contextual knowledge to identify the data’s meaning. To address this problem, designers of data communications should go beyond considering audience characteristics (e.g., numeracy) and focus more on increasing information evaluability (a concept from the judgment and decision-making literatures). The challenge is understanding which data characteristics guide people’s ability to extract meaning from data in a given situation. Prioritizing use-relevant contextual information (e.g., by defining action thresholds, comparison standards, meaningful categories, and/or significant differences) is the single best thing experts can do to improve data communication effectiveness. Doing so increases the chances that the patient, public, or policy maker audience does not just know what their numbers are but also what they mean.
Regulating NKX3.1 stability and function: Post‐translational modifications and structural determinants

The androgen‐regulated homeodomain transcription factor NKX3.1 plays roles in early prostate development and functions as a prostate‐specific tumor suppressor. Decreased expression of NKX3.1 protein is common in primary prostate cancer. Discordance between NKX3.1 mRNA and protein levels during prostate carcinogenesis suggested a key role for post‐transcriptional modifications in regulating NKX3.1 protein levels in prostate epithelial cells. Subsequent studies revealed NKX3.1 to be modified post‐translationally at multiple sites.
Potent stimulation of transcription-coupled DNA supercoiling by sequence-specific DNA-binding proteins

Transcription by RNA polymerase can stimulate localized DNA supercoiling in Escherichia coli. In vivo, there is extensive experimental support for a “twin-domain” model in which positive DNA supercoils are generated ahead of a translocating RNA polymerase complex and negative supercoils are formed behind it. Negative supercoils accumulate in the template DNA because the positive supercoils are preferentially removed by cellular topoisomerase action. Yet, in vitro, clear and convincing support for the twin-domain mechanism has been lacking. In this article, we reconcile this inconsistency by showing that, in a defined in vitro system with plasmid DNA templates, a variety of sequence-specific DNA-binding proteins, such as the bacteriophage λ O replication initiator or the E. coli lactose or galactose repressors, strikingly stimulate transcription-coupled DNA supercoiling. We demonstrate further that this stimulation requires the presence in the DNA template of a recognition sequence for the relevant DNA-binding protein and depends on the production of long RNA chains by an RNA polymerase. Our data are most consistent with a model in which specific DNA-binding proteins facilitate a twin-domain mechanism to enhance DNA supercoiling during transcription. More precisely, we suggest that some nucleoprotein complexes, perhaps those that contain sharply bent DNA, can form barriers that impede the diffusion and merger of independent chromosomal supercoil domains. Localization of DNA supercoils by nucleoprotein complexes may serve as a general mechanism for modulating DNA transactions that are sensitive to DNA superhelicity.
The Emperor’s New Clothes or problems with interregnum? Dynamic capabilities – review of concepts

The aim of the article is to address the problems of the Dynamic Capabilities Approach (DCV) with regard to polarisation, inconsistencies and tautologies, and to propose a new linguistic solution for the challenges of DCV. Through adopting the definitions of the general terms used in DCV (like capacity, ability and capability) from the English language dictionaries, the author builds the concept of capability activation and organizational dynamics. The linguistic platform presented in the article allows to link different perspectives of publications discussing DC issues. By drawing up a new perspective on the concept of capabilities and organizational dynamism, the article clears the problems with tautologies. When it comes to contribution, this article is the first publication from a series of papers extensively discussing the strategic competitive advantage of organization in the perspective of author’s Concept of Organizational Competence Emergence (CEC).
The impact of domestic violence as experienced by women in the greater Accra region of Ghana

This is a study into the impact of domestic violence as experienced by women in the Grater Accra region. The main purpose of this study was to assess the emotional, health and economic impact of domestic violence on women. This study used the feminist and victim logical theories to explain gender inequity and patriarchy which enable gender violations to thrive. Descriptive survey design was used to guide the study. Data were gathered using questionnaire. Purposive sampling procedure was employed to identify 11 women’s groups for the study with a sample of 110 respondents. Descriptive statistics and the Independent t test were used in analysing the data. The, main finding of the study was that domestic violence negatively impact on women’s emotional, health and economic wellbeing and that women with higher level of education were less likely to experience or report domestic violence. The study recommended that programmes on domestic violence should be tailored to meet the needs of all women irrespective of their educational levels. In addition, the Ministry of Gender, Children and Social Protection should work with all District Assemblies to create safe shelters for women across the country.
Incidence and survival of Escherichia coli O157:H7 and Listeria monocytogenes on salad vegetables.

Salad vegetables contaminated with pathogens can cause food poisoning. The isolation of Escherichia coli O157:H7 and Listeria monocytogenes from different salad vegetables; cucumber, cabbage, carrot, and lettuce was carried out. E. coli O157:H7 was isolated from all the salad vegetables while L. monocytogenes was isolated from only cabbage and lettuce. The effect of different storage temperatures on the survival and growth of E. coli O157:H7 and L. monocytogenes on cabbage and lettuce was determined. Known population of each isolate was inoculated into sliced cabbage and lettuce separately and stored at 5oC (refrigerator temperature) and 28oC (room temperature) for 10 days. Bacteria were counted on daily basis. Result showed initial increase in most cases on second and/or third day followed by decrease in bacterial population all through storage. There was no growth towards the end of storage at 28oC. In all cases there was decrease in pH. The count of E. coli O157:H7 ranged from 3.6×103 – 4.0×102 cfu/g in salad vegetables stored at 5oC and the pH, 7.11 5.66 while the count at 28oC was 3.9×103 – 1.0×102 cfu/g with pH 7.11 – 4.06. L. monocytogenes count in salad vegetables stored at 5oC was 1.51×104 – 4.8×102 cfu/g and pH was 7.12 – 5.84. At 28oC, the count was 1.49×104 – 2.0×102 cfu/g and pH was 7.14 – 4.14. Both bacterial pathogens survived at storage temperatures at which salad vegetables are normally stored in practice. Their presence and survival in salad vegetables call for public health concern because salad vegetables receive little or no heat treatment before consumption.
Inspiratory muscle training is ineffective in mechanically ventilated critically ill patients.

PURPOSE Invasive mechanical ventilation is associated with complications, and its abbreviation is desirable. The imbalance between increased workload, decreased inspiratory muscle strength and endurance is an important determinant of ventilator dependence. Low endurance may be present due to respiratory muscle atrophy, critical illness, or steroid use. Specific inspiratory muscle training may increase or preserve endurance. The objective of the study was to test the hypothesis that inspiratory muscle training from the beginning of mechanical ventilation would abbreviate the weaning duration and decrease reintubation rate. As a secondary objective, we described the evolution of inspiratory muscle strength with and without inspiratory muscle training. METHODS Prospective, randomized clinical trial in an adult clinical-surgical intensive care unit. Twelve patients trained the inspiratory muscles twice a day, and 13 patients did not (control). Training was performed adjusting the sensitivity of the ventilator based on the maximal inspiratory pressure. Patients underwent daily surveillance of the maximal inspiratory pressure. RESULTS The weaning duration (31 +/- 22 hr, control and 23 +/- 11 hr, training group; P = .24) and reintubation rate (5 control and 3 training group; P = .39) were not statistically different. The maximal inspiratory pressure of the control group showed a trend toward a modest increase. In contrast, the training group showed a small decrease (P = .34). CONCLUSIONS In acute critically ill patients, inspiratory muscle training from the beginning of mechanical ventilation neither abbreviated the weaning duration, nor decreased the reintubation rate. Inspiratory muscle strength tended to stay constant, along the mechanical ventilation, with or without this specific inspiratory muscle training.
Approche linguistique pour l'analyse syntaxique de corpus

Cet article presente les premiers resultats d'un analyseur syntaxique de corpus, SYNTEX, concu pour effectuer une analyse syntaxique superficielle des textes exploitable pour la constitution de ressources lexicales. Nous decrivons la tâche initiale de resolution du rattachement prepositionnel, effectuee de maniere endogene, en exploitant un faisceau d'indices linguistiques. Parmi ceux-ci, nous definissons une mesure specifique de productivite, qui permet d'evaluer la regularite de l'association entre un mot recteur potentiel et une preposition dans le corpus. Cette mesure, tres efficace dans la tâche de desambiguisation, s'avere egalement prometteuse pour mettre en evidence differents types de rattachement prepositionnel. Les principes de conception de cet outil sont enfin mis en regard avec quelques hypotheses fondamentales de la theorie syntaxique.