bluuebunny/crossref_metadata_2025 huggingface dataset:
Structural Design of a Composite Trimaran
Authors: Plenča Stipe , Zamarin Albert
Published: February 2019

This paper presents a project of a composite trimaran structure, designed and built for competing at the Hydro Contest 2016 competition at Geneva Lake. Concept of the contest is to raise the awareness of tomorrow’s engineers, industrialists, opinion leaders and the public of what is at stake with regard to energy efficiency in the sea transportation of goods and passengers. In addition, to be the laboratory of tomorrow’s boats, particularly enabling the most innovative ideas to be developed in collaboration with the industrial partners. Designed boats must have technological innovations enabling them to achieve the most efficient use of energy. Therefore, the goal was to design, construct lightweight structure, within simple closed rules, with a satisfactory stiffens, and strength as well as to strive for more efficient transport, which means higher speed with minimal energy consumption. An analysis of project variants was made with regard to the hull shape, material, and technology of the fabrication and for the adopted variant, a computer structure model was developed, and the FEA was carried out. The structure is divided into three main sections analysed individually: hulls, front wing and rear wing along with rudder. Calculation was made for the worst load case, i.e. mass transfer, while wings were analysed at the highest advancing speed. The boat has structurally met all requirements since there were no structural problems in testing and competing.
Challenges on Marine Litter Issues in the Adriatic
Authors: Runko Luttenberger Lidija
Published: February 2019

Marine litter places significant burden on beaches, marine surface, marine bottom and biota of the Adriatic Sea. It results mainly from inappropriate waste management on land. The paper analyses quantities and composition of marine litter and its sources, the threat of plastics, the approach to circular economy and waste management in Croatia and presents proposals for circular flow of materials with minimum leakage into the ecosystems and novel approach to marine litter issue. The solution of marine litter problem is in waste management involving source separation, numerous local sorting facilities, home composting, municipal composting and biogas production, with minimum resources left for disposal as well as implementing the policies to reduce and modify packaging, the materials used therefor and to avoid one-use and disposable plastic materials, that implying a change of habits, intervention in supply chain and increasing domestic supply.
Clinical course of dilated cardiomyopathy in children
Authors: E. Sivakumar , P. Ramasubramaniam
Published: February 2019

Background: Dilated cardiomyopathy (DCM) in children is a serious disorder. Here authors study the risk factors for predicting prognosis of dilated cardiomyopathy in children.Methods: An observational case series study done in Institute of child health and research centre, Government Rajaji hospital, Madurai during September 2012 to August 2014. The diagnosis of DCM was based on clinical examination and echocardiographic evidence. Patients were followed up and grouped according to the outcome as improved or cured (group I), no change in clinical status (group II) and worsened or dead (group III).Results: 31 children less than 12 years of age were diagnosed as DCM. 13 children came under group I with a mean age of 2.15±2.5 and the mean cardiothoracic diameter ratio in chest X-ray was 59.8±3.3. The mean left ventricular ejection fraction at the time of admission was 38.7±3.04 and was 52.1±2.7 on last follow up. 11 children came under Group III with a mean age of 5.35±4.4 and the mean cardiothoracic diameter ratio was 65.3±2.7. The mean left ventricular ejection fraction was 35.8±3.7 at admission and 32.6±2.9 on last follow up. Only two children came under Group II and hence their comparison is negligible.Conclusions: Children with higher age at the time of diagnosis, higher cardiothoracic diameter ratio in chest X-ray and a low left ventricular ejection fraction on serial echocardiogram were associated with a poor outcome.
Development and validity of cyberchondria tendency scale
Authors: Tatlı Zeynep , Tatlı Özgür , Kokoç Mehmet
Published: February 2019

Cyberchondria is the name given to individuals who research their existing or imaginary diseases online. We developed a scale for measuring individuals’ cyberchondria tendencies. The 36-item test form produced was applied to 1,200 participants (694 male and 506 female) residing in different provinces, with health problems in the previous month and accessible via e-mail. The data obtained were then subjected to analysis. A structure consisting of 30 items and two dimensions, ‘Reflection’ and ‘Information Seeking’ was obtained with exploratory factor analysis. The relation between the entire scale and the subscales was investigated and the factors were determined to be positively and significantly correlated. The goodness of fit indices of the model was at acceptable levels. The validated scale can be used to determine whether or not both patients and Internet users in general regard the Internet as a basic source of information when health problems occur.

 

Keywords: Cyberchondria, cyberchondria tendency, scale development, instrumental study.
Developing a haptic glove for basic piano education
Authors: Pala Ferhat Kadir , Türker Pınar Mıhcı
Published: February 2019

This study aims at developing a glove with integrated haptic interface to facilitate the learning of those who have just started playing piano and allowing them to perform without a need for a piano during daily activities. The steps of the analysis, design, development, implementation, evaluation model were used in the research. In the analysis stage, students’ needs were analysed and problems were determined. At the design stage, practices oriented to resolving these problems were analysed and it was decided that haptic gloves might be appropriate for the solution to the problems revealed. At the development stage, evaluations were made directed to development of the product and formatting. The participants used the haptic glove for a while and have expressed their opinions, which are recorded by video camera. The recordings were analysed and it was found that the second version of the haptic glove increased the participants’ recall level of the music.Keywords: Music education, haptic glove, piano education, passive haptic learning.*
Basil Performance Evaluation in Aquaponics
Authors: Ferrarezi Rhuanito Soranz , Bailey Donald S.
Published: February 2019

Basil (Ocimum sp.) is a fast-growing, high-value cash crop for aquaponics. Plant suitability evaluation in tropical conditions is critical to recommend new cultivars, increasing grower portfolio and minimizing the production risks associated with untested selections. Two trials were conducted to identify suitable basil cultivars for tropical outdoor aquaponics production using the University of the Virgin Islands (UVI) Commercial Aquaponics System in the U.S. Virgin islands. We evaluated five basil cultivars in Summer 2015 (Genovese, Lemon, Purple Ruffles, Red Rubin, and Spicy Globe), and seven cultivars in Fall 2015 (Cinnamon, Genovese, Lemon, Purple Ruffles, Red Rubin, Spicy Globe, and Thai). In both trials, 3-week-old seedlings were transplanted in net pots at a density of 1.5 plants/ft2 (16.15 plants/m2). The 6-inch portions and upper portions of the canopy were harvested as a salable product and the resultant material (leaves and stems) considered as total yield per square meter. In the summer, yield was higher in ‘Genovese’ (14.91 kg·m−2) and ‘Spicy Globe’ (13.99 kg·m−2); ‘Purple Ruffles’ resulted in the lowest yield (4.18 kg·m−2). Leaf anthocyanin was greater for the red cultivars Red Rubin [28.35 anthocyanin content index (ACI)] and Purple Ruffles (34.36 ACI) compared with the other cultivars. Chlorophyll content was the highest in ‘Genovese’ [48.59 chlorophyll content index (CCI)]. In the fall, ‘Cinnamon’ (6.60 kg·m−2), ‘Genovese’ (6.70 kg·m−2), and ‘Spicy Globe’ (6.35 kg·m−2) showed the highest yield and ‘Purple Ruffles’ the lowest (1.68 kg·m−2). Leaf anthocyanin differed in all cultivars, with the higher values in Purple Ruffles (80.5 ACI) and Red Rubin (36.5 ACI). Chlorophyll content was a response of plant growth and cultivar, with values increasing over time and ranging from 12.06 (Lemon) to 17.99 CCI (Cinnamon). Plant growth index (PGI) was higher than that of other cultivars in Genovese and Lemon on day 58 (summer), and higher in Cinnamon on day 87 (fall). Yield was greater during the summer, which was calculated from May to August, in comparison with the fall, calculated from September to November. Yield declined for the fourth harvest in the summer, indicating that growers may need to end production after the third harvest and replant the crop. The results of this experiment indicate that basil has potential as a specialty, short-season, and high-value crop in the UVI Commercial Aquaponics System. Of the cultivars tested, Genovese and Spicy Globe were the highest yielding cultivars within the environmental and geographical conditions of this study for two consecutive seasons (summer and fall).
Growth, Cold-hardiness, and Flowering of Sweet Olive, Fortune’s Osmanthus, Fragrant Tea Olive, and Holly Tea Olive in Tennessee
Authors: Alexander Lisa
Published: February 2019

Production and use of sweet olive (Osmanthus armatus), fragrant tea olive (O. fragrans), holly tea olive (O. heterophyllus), and fortune’s osmanthus (O. xfortunei) as a landscape plant is currently limited to U.S. Department of Agriculture (USDA) Hardiness Zones 7 to 10, and nursery growers wish to extend the range of these species into colder climates. To provide recommendations to growers and landscapers and inform breeding efforts for cold-hardiness improvement, a replicated trial was conducted in a USDA Hardiness Zone 6b/7a transition zone. Fifteen cultivars and two unnamed accessions representing four species were evaluated for growth, stem necrosis, and flowering in a pot-in-pot production system from 2015 to 2017. One-half of the plants in each cultivar were moved to winter protection each November and returned to the field each May. There were significant differences in growth and cold-hardiness among cultivars. Percent increase in the growth index after three growing seasons for winter-exposed accessions of sweet olive, fortune’s osmanthus, fragrant tea olive, and holly tea olive averaged 867%, 1175%, 155%, and 6361%, respectively. Percent stem necrosis in May 2017 for sweet olive, fortune’s osmanthus, fragrant tea olive, and holly tea olive averaged 1.1%, 2.7%, 44.8%, and 20.2%, respectively. The most cold-tolerant accessions based on stem necrosis and growth index of winter-exposed plants were ‘Kaori Hime’, ‘Hariyama’, ‘Shien’, ‘Head-Lee Fastigate’, and ‘Rotundifulius’ holly tea olive, ‘San Jose’ fortune’s osmanthus, and ‘Longwood’ sweet olive. Of these cultivars, Kaori Hime, San Jose, and Longwood flowered under winter-exposed conditions. All fragrant tea olive cultivars were damaged by winter exposure. ‘Fodingzhu’ was the only fragrant tea olive cultivar that flowered each year under winter-exposed conditions. Evaluation and breeding efforts are continuing to extend the range for production and growth of this genus.
Detection of Bispyribac-sodium Residues in Walnut Leaves after Simulated Drift
Authors: Galla Mariano F. , Hanson Bradley D. , Al-Khatib Kassim
Published: February 2019

Walnut (Juglans regia) and rice (Oryza sativa) are among the most important crops grown in the Sacramento Valley of California. Because rice herbicides are often applied by air, there are occasional allegations of rice herbicide drift onto walnut trees. This study was established to investigate bispyribac-sodium residues on walnut leaves after simulated drift treatments. The objectives were to determine whether bispyribac-sodium can generate visual symptoms on walnut trees without leaving detectable residues in leaf tissues and to evaluate the subsequent impacts on walnut yield. Two experiments were conducted in a 3-year-old walnut orchard. In the first experiment bispyribac-sodium was applied to walnut trees at 0.125%, 0.25%, 0.5%, and 1% of the normal use rate in rice (45 g·ha−1). In the second experiment, rates were 1%, 3%, 10%, and 100% of the normal use rate in rice. Bispyribac-sodium caused general leaf chlorosis and discrete yellow spotting on walnut leaves even at very low concentrations; symptoms were recorded on trees exposed to rates as low as 0.125% of the normal use rate in rice. However, based on high-performance liquid chromatography analysis, the lowest simulated drift treatment from which bispyribac-sodium could be detected 10 d after treatment was 1% of the rice use rate. In general, visual injury symptoms remained constant over time, or even worsened, whereas bispyribac-sodium residues decreased or became not detectable. There was no measurable impact on walnut yield from any of the simulated drift treatments in these experiments.
Cuestionario para la catalogación y selección de aplicaciones con tecnología Web 3.0 para Secundaria Obligatoria
Authors: Guix i Pares Elisabet , Ruiz-Corbella Marta
Published: February 2019

Presentamos el diseño y validación de un instrumento para catalogación/selección de aplicaciones con tecnología Web 3.0 para la Secundaria Obligatoria. A partir de un instrumento para seleccionar software educativo elaborado por Marqués (2002), y a partir de la revisión bibliográfica actualizada, se adaptó este instrumento a criterios funcionales y tecnológicos 3.0.
Mediante la técnica Delphi se seleccionaron 15 expertos en tecnología y Secundaria que, tras la utilización en el aula de aplicaciones 3.0, se procedió a la validación de esta herramienta. La aportación de un instrumento dirigido a la selección de recursos educativos digitales 3.0 para el aula facilita la sensibilización del profesorado para la inclusión de estos recursos del entorno digital de nuestro alumnado, fomentando, así, la formación en competencias digitales 3.0
Tolerance in Inquiry-Based Learning: Building Harmony and Solidarity in Students
Authors: Wahid Abdul , Sugiharto D.Y.P. , Samsudi S , Haryono H
Published: February 2019

This study aims to reveal how inquiry-based learning can be used as a strategy in building harmony and solidarity which, in turn, can instill tolerance values in students. It is a qualitative research involving Sekolah Alam Ungaran in Semarang Regency as its subject of study. The study employs in-depth interview, observation, and documentation. It uses triangulation of resources and methods to ensure data validity. Meanwhile, data analysis refers to the Miles and Huberman technique. The study finds that the tolerance values in inquiry-based learning in Sekolah Alam Ungaran are built through three types of activities: (1) self-development through routine activities, spontaneous activities, exemplary and conditioning; (2) integration into materials or courses, and (3) formation of school culture. Later, these findings are designed to be a model of inquiry-based learning to build harmony and solidarity in students.
Increasing activated sludge aggregation by magnetite nanoparticles addition
Authors: Domingos Dayane Gonzaga , Henriques Rosana Oliveira , Xavier Jéssica Antunes , Junior Nelson Libardi , da Costa Rejane Helena Ribeiro
Published: February 2019

The behavior of mixed samples (activated sludge and wastewater) was investigated after the addition of magnetite nanoparticles (NP-magnetite) in jar tests, with objective to increase the aggregation of sludge and improve its settleability, aiming for future application in granular sequencing batch reactors. The NP-magnetite was synthesized by the method of ion co-precipitation of Fe2+ and Fe3+ and characterized. The process of sludge sedimentation was evaluated for two different experimental strategies, with NP-magnetite concentrations between 25 and 150 mg L−1. The concentration of 75 mg L−1 was the most favorable to process, as evidenced by sludge volumetric index and density. The results presented indicate that the addition of nanoparticles has the potential to improve aerobic granular systems, increasing the settleability of seed sludge.
O wyjątkowości Zagłady Żydów
Authors: Krajewski Stanisław
Published: February 2019

Wskazywanie na wyjątkowość Zagłady Żydów jest mało uzasadnionejej obiektywnymi właściwościami, bo można je spotkać i w innych masowych mordach. Teza o wyjątkowości Zagłady jest w gruncie rzeczy założeniem, jednak założeniem – w powszechnym odczuciu – uzasadnionym. Można to wyjaśnić przez wskazanie na to, że mordując Żydów, Hitler chciał pognębić biblijnego Boga, którego widzialnym znakiem jest naród wybrany. Ponieważ z tej perspektywy Żydzi są nieporównywalni, ich zagłada może być postrzegana jako nieporównywalna.
Społeczeństwo obywatelskie w czasach kryzysu
Authors: Safjan Marek
Published: February 2019

Artykuł przedstawia rozważania autora dotyczące społeczeństwa obywatelskiego. Autor omawia genezę idei społeczeństwa obywatelskiego, ściśle związanego z koncepcją popperowską społeczeństwa otwartego (open society), a następnie przedstawia zależność pomiędzy społeczeństwem obywatelskim i wpływem, jakie ma na nie system demokratyczny, aby w efekcie określić wzajemne relacje pomiędzy nimi. Jako metodę badawczą autor przyjął analizę tzw. czynników blokujących sprawne funkcjonowanie społeczeństwa obywatelskiego, w zależności od relacji z określonym systemem społecznym, ustrojowym bądź też ponadnarodowym.
The Mediating Role of Visual Stimuli From Media Use at Bedtime on Psychological Distress and Fatigue in College Students: Cross-Sectional Study
Authors: Guan Yuan , Duan Wenjie
Published: February 2019

Background

Empirical research has linked psychological distress with fatigue. However, few studies have analyzed the factors (eg, stimuli from bedtime media use) that affect the relationship between psychological distress and fatigue.

Objective

The aim of this study was to examine whether visual stimuli from bedtime media use mediate the relationship between psychological distress and fatigue among college students.

Methods

The sample included 394 participants (92 males, 302 females) with a mean age of 19.98 years (SD 1.43 years), all of whom were Chinese college students at an occupational university in Sichuan Province, China. Data were collected using a paper-based questionnaire that addressed psychological distress, stimuli from bedtime media use, and fatigue. Mediation analysis was conducted using the PROCESS macro version 2.16.2 for SPSS 22, which provided the 95% CIs.

Results

Both psychological distress (r=.43, P<.001) and visual stimuli from bedtime media use (r=.16, P<.001) were positively related to fatigue. The association between auditory stimuli from bedtime media use and fatigue was not significant (r=.09, P=.08). The relationship between psychological distress and fatigue was partially mediated by visual stimuli from bedtime media use (beta=.01, SE 0.01, 95% CI 0.0023-0.0253).

Conclusions

The findings imply that psychological distress has an indirect effect on fatigue via visual stimuli from bedtime media use. In contrast, auditory stimuli from bedtime media use did not have the same effect. We suggest that college students should reduce bedtime media use, and this could be achieved as part of an overall strategy to improve health. Mobile health apps could be an option to improving young students’ health in daily life.
Pedal-Assist Mountain Bikes: A Pilot Study Comparison of the Exercise Response, Perceptions, and Beliefs of Experienced Mountain Bikers (Preprint)
Authors: Hall Cougar , Hoj Taylor H , Julian Clark , Wright Geoff , Chaney Robert A , Crookston Benjamin , West Joshua
Published: February 2019

BACKGROUND

Mountain biking is an aerobic physical activity that has experienced rapid growth. The emergence of the electric pedal-assist mountain bike (eMTB), while not without its critics, presents the potential for an even larger segment of the population to enjoy the health benefits of mountain biking. Although the research focused on the use of e-bikes generally is growing, there is limited research specifically targeting eMTB use. Research is needed exploring the potential exercise response of riding an eMTB, together with the beliefs and perceptions of mountain bikers who have and have not experienced eMTB riding.

OBJECTIVE

This study aimed to compare conventional mountain bike and eMTB use. This was done by investigating 2 questions: (1) What proportion of exercise response is retained for an experienced mountain biker while using an eMTB when compared with a conventional mountain bike? and (2) What are the perceptions and beliefs of experienced mountain bikers toward eMTBs both before and after riding an eMTB?

METHODS

A convergent mixed methods data collection approach was used in the study. Participants completed both a pre- and postride questionnaire, and data regarding heart rate were collected. Heart rates from each ride were compared against each other.

RESULTS

The average heart rate during eMTB use was 94% (31/33) of the average heart rate during conventional mountain bike use. Therefore, eMTB use in this study achieved a majority of the exercise response and exceeded established biometric thresholds for cardiovascular fitness. Paired t test statistics were calculated to compare beliefs of conventional mountain bikes and eMTBs and to compare mean heart rate and speed between conventional mountain bike and eMTB use on the study loop. Participants overwhelmingly perceived the potential impact of eMTB use to be positive on both pre- and post-eMTB ride questionnaires.

CONCLUSIONS

Despite the measured benefit, participants’ perceived exertion while riding the eMTB was low.
Information literacy in food and activity tracking among three communities: parkrunners, people with type 2 diabetes and people with IBS (Preprint)
Authors: McKinney Pamela , Cox Andrew Martin , Sbaffi Laura
Published: February 2019

BACKGROUND

Tracking and logging food intake and activity are increasing and there is evidence of links to improvement in health and well-being as a result of these activities. Crucial to the effective and safe use of logging is users’ information literacy.

OBJECTIVE

To analyse food and activity tracking from an information literacy perspective.

METHODS

An online survey was distributed to three communities via parkrun, diabetes.co.uk and the IBS Network.

RESULTS

The data showed that there were clear differences in the logging practices that members of the three communities engaged with, and differences in motivations for tracking and extent of sharing of tracked data. Respondents showed a good understanding of the importance of information accuracy, and were confident in their abilities to understand tracked data. There were differences in the extent to which food and diet data was shared, and a lack of understanding of the potential re-use and sharing of data by third parties.

CONCLUSIONS

Information literacy in this context involves developing awareness of the issues of accurate information recording, and how tracked information can be applied to support specific health goals. Developing awareness of how and when to share data, and of data ownership and privacy are important aspects of information literacy.
Changes in the Matrilineal System within Minangkabau Children's Carito
Authors: Gayatri Satya , Adi Ida Rochani , Udasmoro Wening
Published: February 2019

This article explores the transformation of the matrilineal system within Minangkabau children’s carito. In general, children’s carito are considered bedtime stories that convey positive values; as such, research into them has focused on values. Children’s carito have been collected through interviews with storytellers who retain the carito within their memories. The memories of these storytellers have changed together with changes in the storytellers themselves and in their environments. To explore the changes in the matrilineal system within the carito, one story has been analyzed over three generations (from grandparents, parents, to children). Changes in the matrilineal system are evidenced through the carito characters’ emergence and disappearance, their actions, and their interactions with their mothers, who—as in the matrilineal system—are central within the carito. Changes, differences, and behaviors within the carito indicate the dynamic transformation of communal families to conjugal families and ultimately nuclear families.
Indonesian EFL Learners’ Critical Thinking in Reading: Bridging the Gap between Declarative, Procedural and Conditional Knowledge
Authors: Mbato Concilianus Laos
Published: February 2019

Critical thinking is explicitly mentioned in many school and university curricula around the world including in the Indonesian education curriculum but it is rarely promoted inside the classrooms. Lack of agreement on its definition and clarity of instruction in the curriculum, the unfavourable culture and the teacher-centered teaching arguably prevent critical thinking to grow. Therefore, more research needs to be undertaken on students’ understanding of and engagement in critical thinking in reading. To fll the gap, this study was conducted, which aimed to investigate Indonesian learners’ critical thinking in reading. One research question was postulated, i.e., How critical are Indonesian EFL learners’ thinking in reading? To answer the question, a mixed method approach was undertaken. The participants of this study were 55 semesters four students enrolled in two classes of Critical Reading and Writing II (CRW2) of the English Education Study Program, Sanata Dharma University, Yogyakarta in the even semester of 2014. The instruments employed were a Likert-scale questionnaire and students’ reﬂections. Results from both quantitative and qualitative data analyses suggest that most of the students had sufficient declarative knowledge of critical thinking in reading. However, their procedural and conditional knowledge about critical thinking in reading were insufficient. Overall, students indicated some level of critical thinking in reading, but to become critical, they need to be in a learning environment where their critical thinking in reading could be regularly and intensively nurtured. The findings of the research are expected to inform English teachers, lecturers and researchers in Indonesia and other parts of the world about the importance of designing and carrying out the teaching-learning processes that can enhance learners’ declarative, procedural and conditional knowledge about critical thinking in reading.
Concussion competencies: a training model for school-based concussion management
Authors: Maerlender Arthur , Lichtenstein Jonathan D , Parent-Nichols Jennifer , Higgins Kate , Reisher Peggy
Published: February 2019

This study reports on the use of ten knowledge competencies related to the behavioral management of concussion in schools. Trainings using these competencies as learning objectives were delivered to school personnel. This aims of the use of competencies in this way are to streamline the education of key stakeholders, to establish clear roles and responsibilities for constituents and equip individuals working with students following a concussion with the relevant knowledge to optimize outcomes. The majority of participants, primarily speech language pathologists working as related service providers in the schools where the trainings occurred, judged the use of the competencies to be informative and useful to their practice both immediately following the training and at a 5-month follow-up. The greatest gains in knowledge were noted by those participants self-reporting the least amount of knowledge pre-training. Participants also ranked the perceived value and relative importance of each of the ten competencies.
Mecanismos de autofosforilación y transfosforilación en sistemas de dos componentes bacterianos
Authors: Terán-Melo Juan Luis , Rodríguez-Rangel Claudia , Georgellis Dimitris , Álvarez Adrián F.
Published: February 2019

Los Sistemas de señalización de Dos Componentes (SDCs) permiten a las bacterias detectar estímulos ambientales y responder a estos de manera adaptativa. Estos sistemas de transducción de señales se basan en la autofosforilación y transferencia de grupos fosforilo entre residuos de histidina y aspartato de una proteína cinasa sensora y un regulador de respuesta. Cuando la cinasa sensora percibe un estímulo específico se autofosforila, en una reacción que puede ser inter o intramolecular, y transfosforila a su regulador de respuesta cognado, que actúa generalmente como regulador transcripcional para ejercer una respuesta fisiológica. Con frecuencia, en ausencia de estímulo, la misma cinasa sensora se encarga de desfosforilar a su regulador de respuesta cognado. Además, algunas cinasas sensoras tienen módulos adicionales que participan en un fosforelevo que termina en la fosforilación del regulador de respuesta, y en un fosforelevo reverso que permite su desfosforilación. Al igual que en la autofosforilación, las trasferencias de grupos fosforilo implicadas en el fosforelevo y el fosforelevo reverso pueden ser inter o intramoleculares. En esta revisión exponemos algunas de las más importantes características de los SDCs bacterianos, poniendo especial énfasis en los procesos de autofosforilación y fosfotransferencia.
Cruz Costa, Esbozo de una historia de las ideas en el Brasil
Authors: Zea Leopoldo
Published: February 2019

Cruz Costa, Esbozo de una historia de las ideas en el Brasil
Algunas directrices de axiología jurídico-política
Authors: Recaséns Siches Luis
Published: February 2019

Algunas directrices de axiología jurídico-política
La constitución de la realidad en la conciencia pura. El segundo tomo de Ideen zu einer reinen Phänomenologie und phänomenologische Philosophie, de Husserl
Authors: Villoro Luis
Published: February 2019

La constitución de la realidad en la conciencia pura. El segundo tomo de Ideen zu einer reinen Phänomenologie und phänomenologische Philosophie, de Husserl
Jean Sarrailh, La España ilustrada
Authors: Zea Leopoldo
Published: February 2019

Jean Sarrailh, La España ilustrada
Naturaleza y cultura en Rousseau
Authors: Recaséns Siches Luis
Published: February 2019

Naturaleza y cultura en Rousseau
El Leibniz de Ortega
Authors: Gaos José
Published: February 2019

El Leibniz de Ortega
Agustín Basave Fernández del Valle, La filosofía de José Vasconcelos
Authors: Recaséns Siches Luis
Published: February 2019

Agustín Basave Fernández del Valle, La filosofía de José Vasconcelos
Helmut Coing, El sentido del derecho; Brand Blanshard, ¿Está la ética en un callejón sin salida?; Theodor Lessing, Estudio acerca de la axiomática del valor
Authors: S. Hartman Robert
Published: February 2019

Helmut Coing, El sentido del derecho; Brand Blanshard, ¿Está la ética en un callejón sin salida?; Theodor Lessing, Estudio acerca de la axiomática del valor
La misión de la filosofía americana
Authors: Zea Leopoldo
Published: February 2019

La misión de la filosofía americana
Ideas estéticas en los Manuscritos económico-filosóficos de Marx
Authors: Sánchez Vázquez Adolfo
Published: February 2019

Ideas estéticas en los Manuscritos económico-filosóficos de Marx
Fides quaerens intellectum
Authors: S. Hartman Robert
Published: February 2019

Fides quaerens intellectum
La ontología de Ortega según su Leibniz
Authors: Gaos José
Published: February 2019

La ontología de Ortega según su Leibniz
David Bohm, Causalidad y azar en la física moderna
Authors: Schoenberg Judith
Published: February 2019

David Bohm, Causalidad y azar en la física moderna
América ante Occidente
Authors: Zea Leopoldo
Published: February 2019

América ante Occidente
Misión y límites de la hermenéutica jurídica
Authors: García Máynez Eduardo
Published: February 2019

Misión y límites de la hermenéutica jurídica
Óntica antropológica
Authors: Basave Fernández del Valle Agustín
Published: February 2019

Óntica antropológica
El problema de la estética
Authors: Bueno Miguel
Published: February 2019

El problema de la estética
La conciencia moral y los valores
Authors: Virasoro Rafael
Published: February 2019

La conciencia moral y los valores
Carta abierta de Manuel Granell al doctor Eduardo García Máynez, director de Diánoia
Authors: Granell Manuel
Published: February 2019

Carta abierta de Manuel Granell al doctor Eduardo García Máynez, director de Diánoia
Eduardo Nicol, El problema de la filosofía hispánica
Authors: Basave Fernández del Valle Agustín
Published: February 2019

Eduardo Nicol, El problema de la filosofía hispánica
Engelbert Monnerjahn, Giovanni Pico della Mirandola. Ein Beitrag zur philosophischen Theologie des italienischen Humanismus
Authors: S. Hartman Robert
Published: February 2019

Engelbert Monnerjahn, Giovanni Pico della Mirandola. Ein Beitrag zur philosophischen Theologie des italienischen Humanismus
Mario de la Cueva, et al., Estudios de historia de la filosofía en México
Authors: Bueno Miguel
Published: February 2019

Mario de la Cueva, et al., Estudios de historia de la filosofía en México
La filosofía del derecho del mundo occidental, de Alfred Verdross
Authors: Recaséns Siches Luis
Published: February 2019

La filosofía del derecho del mundo occidental, de Alfred Verdross
Reference image quality assessment of composite materials exposed to positive and negative temperatures
Authors: Afonin Victor V. , Erofeeva Irina V. , Zotkina Marina M. , Emelyanov Denis V. , Podzhivotov Nikolay Yu.
Published: February 2019

ABSTRACT Introduction. The question of a comparative assessment of the quality of images obtained as a result of scanning test composite materials exposed under the cyclic effects of positive and negative temperatures is considered. The samples are sorted relative to the reference numerical metric expressed as a percentage. Materials and methods. The compared composites differ in composition relative to the control sample. Periodic scanning of the tested composites is carried out during several control points of time. A comparative analysis of the image quality of test composites was carried out both during the entire exposure time and at the control points of time. On the basis of the existing algorithm Structural Similarity Index for measuring image quality (SSIM), percentage indicators of sample quality were determined depending on the composition and exposure time. The results obtained allow the selection of composite materials in accordance with the level of structural similarity in structural color characteristics. According to the SSIM algorithm, the resulting metric values are in the range [-1; +1]. Full structural similarity corresponds to a value equal to one. It is proposed to express the SSIM metric as a percentage with the transformation that the change in the color structural difference of the relative control sample can vary from zero to 100 %. Results. For the proposed method of comparing images of scanned samples of composite materials, ten samples of composite materials of different composition were used. Numerical results of the experiment with their graphical visualization give a clear idea of the nature of the change in color characteristics relative to the control sample. Consistent evaluation at the exposure points shows the nature of changes in the properties of materials from the duration of exposure to cyclic changes in positive and negative temperatures. Conclusions. The proposed benchmark image quality assessment based on the existing SSIM algorithm allows you to quickly investigate groups of materials, the change in properties of which is caused by their exposure in adverse operating conditions.
LONG JUMP IN ASIAN GAMES: CONTEXT OF PISA-LIKE MATHEMATICS PROBLEMS
Authors: Pratiwi Ika , Putri Ratu Ilma Indra , Zulkardi Zulkardi
Published: February 2019

This study aimed to produce a set of PISA-like mathematics problems content of uncertainty and data using long jump context in Asian Games that were valid, practical and had potential effects on the ability of the students’ mathematical literacy. This study used the design research method of development studies type in two stages, preliminary and formative evaluation. The subject of this study involved 34 students of Senior High School. The result of this study was a set of PISA-like mathematics problems using long jump context in Asian Games which were valid, practical, and had potential effects. The result of students’ answer analysis showed some strategies and arguments used by students. In question 1, 3 out of 34 students were involved in representation, reasoning and argument ability, 31 out of 34 students were involved in reasoning and argument ability. In question 2, 30 out of 34 students were involved in representation and reasoning and argument ability, and 4 out of 34 students were involved in communication, representation, reasoning and argument ability. Also, using the PISA-like mathematics problems with long jump context made students more interested and active during the learning process.
EXTERNAL REPRESENTATION FLEXIBILITY OF DOMAIN AND RANGE OF FUNCTION
Authors: Aziz Tian Abdul , Kurniasih Meyta Dwi
Published: February 2019

This study attempts to analyze pre-service secondary mathematics teachers’ flexibility of external representations of domain and range of functions. To reach the purpose, a task consisted of thirty question items were designed. Participants of the study were thirty-eight Indonesian pre-service secondary mathematics teachers attending mathematics education department at one private university in Jakarta, Indonesia. Based on the analysis participants written responses, this paper revealed participants’ difficulties in providing a proper and consistent definition of the concept of domain and range of functions. We also disclosed the participants’ lack of flexibility in doing translation among representations under the concept of domain and range of function. In general, participants written responses to the task did not provide evidence of a solid understanding of domain and range. There are several implications of these findings offered for secondary mathematics teacher education’s program.
ETHNOMATHEMATICS IN SASAKNESE ARCHITECTURE
Authors: Supiyati Sri , Hanum Farida , Jailani Jailani
Published: February 2019

This research is aimed to explore the cultural elements especially in Sasak architectures in Lombok Island such as a home living (Bale), worship building (masjid), lumbung (sambi) in ethnomathematics point of view. This research uses qualitative approach with cognitive (anthropology cognitive). The interviewees are the experienced custom leader and humanists who has conducted the research on Sasak society. Meanwhile, the data collection method used the participant, observation and documentation. Data analysis on this research is not only based on the researcher is interpretation but also the idea structure of the society.  This research shows the evidence of sensitivity on the use of numbers practiced by Sasak ancestor long time ago in doing the measurement using their anthropometric ability (Ethnomathematics). The architecture products of sasak society also describe that sasak society is more focus on the process than the final products itself which describes the consistency in conducting role and cultural device which control the desire of individual construction.
STUDENTS’ COGNITIVE PROCESSES IN SOLVING PROBLEM RELATED TO THE CONCEPT OF AREA CONSERVATION
Authors: Ekawati Rooselyna , Kohar Ahmad Wachidul , Imah Elly Matul , Amin Siti Maghfirotun , Fiangga Shofan
Published: February 2019

This study aimed to determine the cognitive process employed in problem-solving related to the concept of area conservation for seventh graders. Two students with different mathematical ability were chosen to be the subjects of this research. Each of them was the representative of high achievers and low achievers based on a set of area conservation test. Results indicate that both samples performed more cyclic processes on formulating solution planning, regulating solution part and detecting and correcting error during the problem-solving. However, it was found that the high achiever student performed some processes than those of low achiever. Also, while the high achiever student did not predict any outcomes of his formulated strategies, the low achiever did not carry out the thought process after detecting errors of the initial solution gained. About the concept of area conservation, the finding also reveals that within the samples’ cognitive processes, the use of area formula come first before students decided to look for another strategy such as doing ‘cut-rotate-paste’ for the curved planes, which do not have any direct formula. The possible causes of the results were discussed to derive some recommendation for future studies.
Necesidades de capacitación profesional en educación para adultos del personal docente y administrativo de colegios académicos nocturnos
Authors: Víquez Monge Erick
Published: February 2019

El propósito del artículo es presentar los resultados de un estudio efectuado en el Colegio NocturnoLa Unión (CNLU) que buscó detectar las deficiencias que a nivel de formación andragógica muestrael personal.A partir de lo anterior se esbozó una propuesta de capacitación dirigida al personal del centro deestudios, la cual promueva el desarrollo profesional continuo mediante la adquisición de habilidadesprofesionales en temáticas andragógicas.La información recolectada fue analizada y contrastada metodológicamente a través de un diagnósticoinicial, basado en un enfoque mixto. El análisis final se efectuó mediante la triangulación concurrenteque determina la convergencia de la información final y las conclusiones generales.El estudio evidencia la necesidad de capacitación tanto para el personal activo como en profesionalesactualmente en formación universitaria, según los resultados obtenidos el abordaje utilizado paraatender a los estudiantes adultos no es el más adecuado, se aboga por un proceso educativo másdiferenciado.Finalmente, se logran definir características personales y profesionales de un administrador educativode instituciones para adultos, en donde la administración educativa estratégica se convierte en unimportante instrumento de cambio, a partir del cual se puede mejorar la gestión institucional y losprocesos educativos de los discentes adultos.
Buenas prácticas que favorecen el trabajo colaborativo entre la gestión de un centro educativo y los órganos de apoyo
Authors: Navarro Monge Ana Eliette , Rosabal Vitoria Satya
Published: February 2019

El presente artículo refiere a las buenas prácticas de trabajo colaborativo entre la Junta de Educación,el Patronato Escolar y la gestión administrativa de un centro educativo, el cual surge de una investigaciónrealizada en la escuela José Figueres Ferrer ubicada en Sabanilla de Montes de Oca durante elprimer semestre del 2018. El objetivo de la investigación, de tipo cualitativa y desarrollada desde unestudio de caso, se orienta al análisis de las prácticas que favorecen el trabajo colaborativo entre lagestión administrativa y los órganos de apoyo.A partir de los hallazgos y reflexiones del estudio, se genera una serie de buenas prácticas que fortalecenel trabajo en equipo entre los órganos de apoyo y la dirección, las cuales deriva en efectos positivosal centro educativo; siendo, desde un estudio científico, la posibilidad de replicar estas acciones,establecidas como buenas prácticas, en otros centros educativos.
La violencia en escenarios educativos: un acercamiento multidisciplinario para su comprensión
Authors: Morales Jesús
Published: February 2019

La violencia como un fenómeno social ha representado científica e históricamente uno de los temasmás controversiales, dada su complejidad. Ahora bien, dentro de los modos de violencia tipificados seencuentra la violencia perpetrada en escenarios educativos, cuyas implicaciones sociales se han convertidodurante los últimos años en un fenómeno alarmante por el hecho de asumirse la institucióneducativa como un escenario en el que se intentan modular conductas, enseñar comportamientos ytransmitir a través de los procesos de socialización las normas y convenciones pautadas por la sociedad.Se realiza una revisión de apreciaciones científicas derivadas de la psicología de la agresión, de lasociología de la violencia, de la educación y de la antropología, para dar cuenta de las motivaciones,repercusiones y componentes de la violencia en contextos educativos. Como parte de los resultados,se pudo evidenciar que la misma obedece a un fenómeno multifactorial que no puede ser visto desdeuna única postura, sino que debe involucrar la dinámica familiar, el contexto, los procesos evolutivos yde socialización y las representaciones culturales y sociales que poseen de la violencia tanto el sujetoactivo como el pasivo.
Family cumulative knowledge and firm’s financial performance: An empirical investigation of the wine companies’ governance
Authors: Marsigalia Bruno , Giovannini Renato , Palumbo Emanuela
Published: February 2019

Family business is one of the most common governance systems worldwide and it is very successful in industries with strong cultural traditions, as the wine business. The literature still disagrees on whether the familiar corporate structure increases performance or not. Our empirical paper aims to investigate the effect of a long-term company culture in terms of economic performance and firm value. Is it possible to track the cumulative knowledge (passed from father to son) into firm economic returns? Using a qualitative and a quantitative research approach, the survey tests the hypothesis that the more experienced companies (higher firm age) will perform better than the others considering a set of performance indicators on a four years pattern (from firm value to EVA and VAIC). Comparing firm longevity with the performance indicators, but also monitoring many other corporate governance or ownership indicators, on a panel dataset of the top Italian wine companies, developing the statistical models of regression and correlation to verify the relationship between performance indicators and a set of corporate governance/ownership variables. This methodology results in a deep analysis of the Italian wine business, that also describes the family buy-out strategy and the cooperative ownership structure (which could be considered somehow a micro-families aggregative model). Proper family firms represent 42% of the panel, with more than 200 years of experience, a larger presence of women on board, a higher average age of the directors and a higher propensity to the production of grapes. Moreover, they have the greatest longevity and perform better than the other two groups, non-family firms and cooperatives.
Regularized level set models using fuzzy clustering for medical image segmentation
Authors: Shan Xiang , Kim Daeyoung , Kobayashi Etsuko , Li Bing
Published: February 2019

Level set methods are a kind of general numerical analysis tools that are
specialized for describing and controlling implicit interface dynamically.
It receives widespread attention in medical image computing and analysis.
There have been a lot of level set models designed and regularized for
medical image segmentation. For the sake of simplicity and clarity, we
merely concentrate on our recent works of regularizing level set methods
with fuzzy clustering in this paper. It covers two most famous level set
models, namely Hamilton-Jacobi functional and Mumford-Shah functional, for
variational segmentation and region competition respectively. The strategies
of fuzzy regularization are elaborated in detail and their applications in
medical image segmentation are demonstrated with examples.