bluuebunny/crossref_metadata_2025 huggingface dataset:
High Temperature Strength and Hot Working Technology for As-Cast Mg–1Zn–1Ca (ZX11) Alloy
Authors: Rao Kamineni , Suresh Kalidass , Prasad Yellapregada , Dharmendra Chalasani , Hort Norbert , Dieringa Hajo
Published: October 2017

Cast Mg–1Zn–1Ca alloy (ZX11) has been tested to evaluate its compressive strength between 25 °C and 250 °C, and workability in the range of 260–500 °C. The ultimate compressive strength of this alloy is about 30% higher than that of creep-resistant alloy Mg–3Sn–2Ca (TX32) between 25 °C and 200 °C, and exhibits a plateau between 100 °C and 175 °C, similar to TX32. This is attributed to Mg2Ca particles present at grain boundaries that reduce their sliding. The processing map, developed between 260 and 420 °C in the strain rate limits of 0.0003 s−1 to 1 s−1, exhibited two domains in the ranges: (1) 280–330 °C and 0.0003–0.01 s−1 and (2) 330–400 °C and 0.0003–0.1 s−1. In these domains, dynamic recrystallization occurs, with basal slip dominating in the first domain and prismatic slip in the second, while the recovery mechanism being climb of edge dislocations in both. The activation energy estimated using standard kinetic rate equation is 191 kJ/mol, which is higher than the value for lattice self-diffusion in magnesium indicating that a large back stress is created by the presence of Ca2Mg6Zn3 intermetallic particles in the matrix. It is recommended that the alloy be best processed at 380 °C and 0.1 s−1 at which prismatic slip is favored due to Zn addition. At higher strain rates, the alloy exhibits flow instability and adiabatic shear band formation at <340 °C while flow localization and cracking at grain boundaries occurs at temperatures >400 °C.
In-Situ TEM Study of a Nanoporous Ni–Co Catalyst Used for the Dry Reforming of Methane
Authors: Fujita Takeshi , Higuchi Kimitaka , Yamamoto Yuta , Tokunaga Tomoharu , Arai Shigeo , Abe Hideki
Published: October 2017

We performed in-situ transmission electron microscopy (TEM) on a dealloyed nanoporous NiCo catalyst used for the dry reforming of methane (DRM) to investigate the origin of the catalytic activity and structural durability. The in-situ observations and local chemical analysis indicated that the DRM induced chemical demixing of Ni and Co accompanied by grain refinement, implying possible “synergic effects” in a general bimetallic NiCo catalyst when used for the DRM.
Complex Enzyme-Assisted Extraction Releases Antioxidative Phenolic Compositions from Guava Leaves
Authors: Wang Lu , Wu Yanan , Liu Yan , Wu Zhenqiang
Published: October 2017

Phenolics in food and fruit tree leaves exist in free, soluble-conjugate, and insoluble-bound forms. In this study, in order to enhance the bioavailability of insoluble-bound phenolics from guava leaves (GL), the ability of enzyme-assisted extraction in improving the release of insoluble-bound phenolics was investigated. Compared to untreated GL, single xylanase-assisted extraction did not change the composition and yield of soluble phenolics, whereas single cellulase or β-glucosidase-assisted extraction significantly enhanced the soluble phenolics content of PGL. However, complex enzyme-assisted extraction (CEAE) greatly improved the soluble phenolics content, flavonoids content, ABTS, DPPH, and FRAP by 103.2%, 81.6%, 104.4%, 126.5%, and 90.3%, respectively. Interestingly, after CEAE, a major proportion of phenolics existed in the soluble form, and rarely in the insoluble-bound form. Especially, the contents of quercetin and kaempferol with higher bio-activity were enhanced by 3.5- and 2.2-fold, respectively. More importantly, total soluble phenolics extracts of GL following CEAE exhibited the highest antioxidant activity and protective effect against supercoiled DNA damage. This enzyme-assisted extraction technology can be useful for extracting biochemical components from plant matrix, and has good potential for use in the food and pharmaceutical industries.
The Environmental Costs of Photovoltaic Power Plants in South Korea: A Choice Experiment Study
Authors: Yang Hee-Jong , Lim Seul-Ye , Yoo Seung-Hoon
Published: October 2017

The photovoltaic (PV) power supplies renewable and sustainable electricity without greenhouse gases and air pollutants emissions. However, the potential environmental impacts caused by PV power plants can negatively affect both the ecosystem and human life. Thus, the environmental costs arising from the PV power plants should be measured and the efforts to reduce them should be made. To this end, this article seeks to assess the environmental costs of PV power plants using a choice experiment (CE). Four attributes chosen for this purpose are habitat loss, landscape destruction, hazardous materials, and light pollution. The trade-offs between each attribute and price were successfully assessed in the CE survey of 1000 South Korean respondents. The environmental costs of a one percentage point increase in habitat loss, landscape destruction, hazardous materials, and light pollution caused by PV power plants are estimated to be KRW 135 (USD 0.12), 53 (0.05), 122 (0.11), and 158 (0.14), respectively, per household per month. The findings can provide policymakers with useful information for both evaluating and planning the PV power plant-related policies.
Probabilistic Cash Flow-Based Optimal Investment Timing Using Two-Color Rainbow Options Valuation for Economic Sustainability Appraisement
Authors: Kim Yonggu , Shin Keeyoung , Ahn Joseph , Lee Eul-Bum
Published: October 2017

This research determines the optimal investment timing using real options valuation to support decision-making for economic sustainability assessment. This paper illustrates an option pricing model using the Black-Scholes model applied to a case project to understand the model performance. Applicability of the project to the model requires two Monte Carlo simulations to satisfy a Markov process and a Wiener process. The position of project developers is not only the seller of products, but it is also the buyer of raw materials. Real options valuation can be influenced by the volatility of cash outflow, as well as the volatility of cash inflow. This study suggests two-color rainbow options valuation to overcome this issue, which is demonstrated for a steel plant project. The asymmetric results of the case study show that cash outflow (put option) influences the value of the steel plant project more than cash inflow (call option) does of which the discussion of the results is referred to a sensitivity analysis. The real options valuation method proposed in this study contributes to the literature on applying the new model, taking into consideration that investors maximize project profitability for economic sustainable development.
Notifiable Sexually Transmitted Infections in China: Epidemiologic Trends and Spatial Changing Patterns
Authors: Zhu Bin , Fu Yang , Liu Jinlin , Mao Ying
Published: October 2017

Sexually transmitted infections (STIs) have become one of the major public health threats to the sustainable development of human beings. Among all of the STIs in China, three are listed as the notifiable infectious diseases, i.e., gonorrhea, syphilis, and HIV/AIDS, which demand more attention. This study aims to detect, describe, and compare the spatial-temporal clustering of these notifiable STIs in China and to relate spatial analysis results to epidemiologic trends during the past decade. A descriptive epidemiology analysis and a spatial autocorrelation analysis (global and local) are adopted to study the epidemiologic trends and spatial changing patterns of STIs respectively. The results indicated that there were regional disparities and spatial clusters in the spatial distribution of notifiable STIs in China. However, the incidence rates of the three notifiable STIs displayed relatively different characteristics in epidemiologic trends and the agglomeration level. Overall, the Yangtze River Delta region, the southwestern border area, and some other border regions are the places demanding more attention. In the end, we propose a three-dimensional prevention and control strategy, which focuses on not only the most-at-risk populations, but also the most-at-risk areas and most-at-risk timings. Besides, some measures targeting more than one STI should also be formulated.
Les deux (ou trois) carrières de Richard Hoggart
Authors: Ducournau Claire
Published: October 2017

Analysant d’abord les hommages posthumes différenciés rendus à Richard Hoggart de part et d’autre de la Manche à sa mort en 2014, cet article défend l’hypothèse d’une double carrière de cette figure intellectuelle et de ses écrits au Royaume-Uni et en France. Auteur d’un succès de librairie lu au-delà du monde universitaire, fondateur institutionnel des cultural studies à Birmingham, Hoggart est toutefois rapidement vu dans ce domaine comme une référence à dépasser, alors que la traduction, en France, de deux de ses œuvres majeures (The Uses of Literacy et A Local Habitation) l’y transforme en sociologue. L’importation de ces textes dans les sciences sociales françaises a nourri la première critique d’importance, par Jean-Claude Passeron et Claude Grignon, du système conceptuel mis en place par Pierre Bourdieu, que la lecture de Hoggart a d’abord implicitement nourri. Sélectives, les références à ses œuvres dans la sociologie de la culture ou des classes populaires se sont ensuite routinisées. Ces usages se sont toutefois accompagnés d’un héritage plus souterrain qui semble moins dépendant des frontières nationales. Hoggart a en effet été pionnier pour légitimer dans la recherche universitaire une prise de parole autobiographique marquée par la réflexivité. Les formes scientifiques d’un tel geste se sont cependant aussi conformées à des cadres disciplinaires et à des logiques épistémologiques de plus en plus distincts, propres à la sociologie française d’un côté et aux studies de l’autre.
In Search of a Good Night's Sleep
Authors: Leahy Laura G.
Published: October 2017

A good night's sleep is essential to overall physical, cognitive, and emotional well-being. Sleep deprivation, whether general or related to time changes (e.g., daylight saving time), contributes to decreased cognition, impaired memory, poor coordination, mood fluctuations, increased risk of heart disease and diabetes, and weight gain, among others. The sleep cycle is defined by five stages and two distinct parts—rapid eye movement (REM) and non-REM sleep—that work to promote not only the quantity of sleep but also the quality of sleep, which impacts overall health. Each stage of sleep is influenced by various neurochemical actions among the brain regions. The neurochemistry and neuropath-ways related to the sleep/wake cycle as well as the mechanisms of action of sleep-inducing and wake-promoting medications are explored. [
Journal of Psychosocial Nursing and Mental Health Services, 55
(10), 19–26.]
La télécollaboration vue par la communication exolingue – Pour un enrichissement mutuel de deux traditions de recherche
Authors: Cappellini Marco
Published: October 2017

Dans notre article, nous nous proposons de discuter les relations possibles entre les études sur la télécollaboration et les études sur la communication exolingue, le but étant de montrer comment les recherches dans ces deux domaines peuvent s'enrichir mutuellement. Pour ce faire, l'article sera divisé en deux grandes parties : une première où nous dresserons un bref panorama des études dans les deux domaines et montrerons les articulations conceptuelles possibles ; une deuxième partie où nous montrerons certains points d'un tel enrichissement par un exemple concret, tiré d'une étude d'un télétandem.
The Impact of Lifestyle and Attitude Functions on Luxury Goods on Emotional Attachment Towards Luxury Brands
Authors: Kashani Mohammad , Aslani Alireza , Esfidani Mohammad R. , Javadin Seyed Reza Seyed
Published: October 2017

The purpose of this article is to investigate the effect of individuals' life on the consumers' emotional attachment to the luxury products. The mediation role of individuals' attitudes has been investigated for the relationship between lifestyle and emotional attachment. First, the respondents have been divided into four categories that relate to their lifestyle - concerning their income and desire for social status. Then, the authors deal with the investigation of lifestyle effect on the emotional attachment to the luxury products. The attitude of different age groups has been investigated by the mediation role of the lifestyle and emotional attachment. Finally, elements have been investigated including the accurate recognition of brand by the aristocratic class, communicative and non-communicative motives in different lifestyles, and the relation between price and brand prominence. The findings show that the individual's lifestyle influences on the emotional attachment to the luxury products, as well as the existing attitudes in different age groups mediate the relation between lifestyle and emotional attachment to the luxury brand. The aristocratic class accurately recognise the signs of luxury brands. Also, the motives of communicative and non-communicative individuals are expressed in a variety of styles. Finally, a connection between price and brand prominence is discussed.
The Application of Flipped Classroom in Teaching University Students
Authors: Van Hung Tran , Yellishetty Mohan , Thanh Ngo Tu , Patil Arun , Huy Le Thanh
Published: October 2017

Flipped classrooms have been extensively used by many educators all over the world and are being seen as an alternative to the traditional classroom-based teaching-learning practices. As for traditional classrooms, face-to-face learning has not brought the personalization of learning capacity, time, attitude, behavior and interests to learners and has not exposed them to experimental activities. The flipped classrooms, on the other hand, enable students to be flexible in their learning and offer more time to go through videos, lectures posted on the Internet, which helps students to acquire the lessons through online learning systems. Flipped classrooms help create environment for more interaction between learners and instructors/facilitators, especially by creating the face-to-face conversations more interactive. However, teaching using flipped classrooms requires adequate additional resources such as; the effective online learning systems, databases, appropriate learning contents and methods, plan, presentations (in various forms like PowerPoint, word, scrom, video, audio) and most importantly minimum technical knowledge for both learners and instructors to use varieties of tools. This paper presents the construction of an environment supporting students to take part in an online activity before and after face-to-face interaction and organization of experimental teaching with the process of learning in groups based on the model of flipped classrooms to facilitate active learning. The quantitative results at the end of the course showed that the flipped learning is highly preferred and useful pedagogical approach when compared to those traditional methods that fostered better learning attitude and behaviors.
Adaptive Modeling and Dynamic Targeting for Real Time Analytics in Mobile Advertising
Authors: Kridel Donald , Dolk Dan , Castillo David
Published: October 2017

Mobile marketing campaigns are now largely deployed through demand side platforms (DSPs) who provide dynamic customer targeting and a performance-intensive real-time bidding (RTB) version of predictive analytics as a service. Matching users with the campaigns they are most likely to engage with in extreme real-time environments requires adaptive model management, advanced parallel processing hardware/software, and the integration of multiple very large databases. The authors present (1) an adaptive modeling strategy to satisfy the performance thresholds of 40 to 100ms for DSPs to decide whether and how much to bid for a potential client to receive a particular advertisement via their mobile device. (2) a dynamic customer profiling technique to map mobile devices to specific lattices (geographic locations), and to track user behavior via device-histories. In this “big data” decision environment, analytic model management is automated via model feedback loops which adjust the models dynamically as real-time data streams in.
Integrating Big Data Services Into an Undergraduate MIS Curriculum
Authors: Jensen Scott
Published: October 2017

There is an insatiable demand in industry for data scientists, and graduate programs and certificates are gearing up to meet this demand. However, there is agreement in the industry that 80% of a data scientist's work consists of the transformation and profiling aspects of wrangling Big Data; work that may not require an advanced degree. In this paper, the authors present hands-on exercises to introduce Big Data to undergraduate MIS students using the CoNVO Framework and Big Data tools to scope a data problem and then wrangle the data to answer questions using a real-world dataset. This can provide undergraduates with a single course introduction to an important aspect of data science.
Coagulation of Chitosan Solution in Commercial Detergent as Adsorbent for Sorption Methylene Blue Dye
Authors: Buaphean Tanaree , Ketwongsa Thamonwan , Piyamongkala Kowit
Published: October 2017

The chitosan resin forming with commercial detergent solution was used as adsorbent for removal of the methylene blue. The effect of the amount of adsorbent was thoroughly investigated through batch adsorption system. The percent adsorption of methylene blue increased in the same direction as the amount of chitosan resin. The experimental result showed that adsorption capacity onto 0.4 g of chitosan resin was 9.1 mg/g. The Langmuir and the Freundlich adsorption isotherms were applied to describe the methylene blue uptake, which could be explained by Freundlich adsorption isotherm onto chitosan resin. Single-state batch adsorption design of methylene blue onto chitosan resin has been studied, using on the Freundlich isotherm equation.
Dilute Acid Hydrolysis of Lignocellulose Fiber Sago Pretreated by Microwave Heating
Authors: Susilowati Prima Endang , Dahlia Dahlia , Purnama Sari Wulan , Mitsudo Seitaro , Ngkoimani La Ode , Sudiana Inyoman Nyoman
Published: October 2017

The dilute acid hydrolysis of fiber sago with cloride acid was undertaken in a microwave reactor system. The glucose and morphology analysis were performed after cellulose and hemi-cellulose hydrolysis. The hydrothermal condition was setup in a microwave furnace at microwave power of 800 W for 30-60 min. Scanning electron microscopy (SEM) analysis were utilized to confirm the microstructural changes after pretreatment. The results show that by using microwave energy, hydrolysis is not only can work in lower temperature than that of hot plate hydrolysis but also give a higher yield. There also found that the pretreatment optimum conditions for fiber sago hydrolysis is at 5% chloride acid solution and applied microwave power of 800 watt for 45 minutes. At that condition, there was found that sugar degradation occurred at acid concentrations greater than 30.15%. Microstructure evaluation from SEM photos shows that the disruption of the structure of the cell wall increases the accessibility of cellulase to lignocellulose. This results suggest that microwave technology is appropriate technology for holocellulose (cellulose and hemi-cellulose) hydrolysis.
Characterization of Silica Extracted from Rice Husk Ash Wastes Doped by Tin Dioxide for Wave Guide Material
Authors: Sudiana Inyoman Nyoman , Firihu Muhammad Zamrun , Aba La , Ngkoimani La Ode , Susilowati Prima Endang , Mitsudo Seitaro , Purwasasmita Bambang Sunendar , Suastika Komang Gde , Lestari Lina , Aripin Haji
Published: October 2017

A series of experiments is made to produce silica, mixing with tin dioxide (SnO2), and characterizing for application of waveguide device. Silica xerogels (SX) are prepared from raw materials derived from rice husks ash (RHA), which abundant in South East Sulawesi. The synthesis conditions have been optimized to obtain the ash of rice husks with the maximum silica content. SnO2 are prepared from a commercial powder. The ceramic waveguide materials are produced by mixing SX and SnO2 with various composition. The mixtures are molded to form the rectangular shape of 20 mm, 40 mm, and 5 mm in size. The samples will be sintered at different level of temperatures (from 300°C to 1200°C) by using microwave heating system as well as electric furnace. The microstructural of sintered samples were characterized on the basis of the experimental data obtained using densification measurement method (Archimedes method), crystallization (X-ray diffraction, XRD), microstructure (Scanning electron microscope, SEM). Optical and related properties such as the functional groups, structure, and absoption were characterized by using FTIR, Infrared and Raman Spectroscopy and absorption (UVVis). The permittivity and permeability will be calculated from S-parameters determined by using Vector Network Analyzer (VNA). Characterization results are presented in this paper and the others are will be published in another separated papers. Furthermore, the relationship between properties with SnO2 content and sintering temperature is also studied.
Mixing and Comparative Properties of NR Compounds Filled with Different Types of Reinforcing Fillers
Authors: Maijan Pattarawadee , Saetung Nitinart , Kaewsakul Wisut
Published: October 2017

Mixing behaviors of the compounds filled with different reinforcing fillers were studied in correlation with compound and vulcanizate properties. Four filler systems were used including: 1) silica plus small amount of silane coupling agent; 2) carbon black; 3) pre-modified silica; and 4) silica+silane-carbon black mixed one. The results have shown that silica provides longer optimum cure time and shorter cure rate than carbon black due to accelerator adsorption on silica surface. In addition, owing to highly polar nature on silica surface the silica-based compounds show rather high viscosity, attributed to stronger filler-filler interaction as can be confirmed by Payne effect and reinforcement index. However, the commercial surface treatment or pre-modified form of silica shows superior properties than in-situ modification of silica by silane during mixing, while it gives comparable properties to carbon black-based compound. Tensile properties of vulcanizates show a good correlation with the basic properties of their compounds.
Prediction of the Creep and Tensile Properties of Near-α Titanium Alloys
Authors: Kitashima Tomonori , Hagiwara Masuo , Sahara Ryoji , Bhattacharya Somesh Kumar , Iwasaki Satoshi
Published: October 2017

The tensile and creep properties of near-α Ti alloys with added Al, Ga, Sn, Zr, Mo, Nb, Ta, W, Si, and Ge were analyzed by using a regression analysis technique. The tensile test was performed at room temperature for 27 alloys. The creep test was carried out under a constant stress of 137 MPa at 650 °C for 30 alloys and 310 MPa at 600 °C for 21 alloys. The squared multiple correlation coefficients for the tensile elongation and minimum creep strain rate were 0.97 and 0.84, respectively. In addition, the effect of α stabilizing elements on the tensile and creep properties of those alloys was examined. The tensile elongation and minimum creep strain rate decreased between Al equivalences of 8 and 10. However, those values can be scattered depending on the composition and microstructure even with an almost constant value regarding the Al equivalence. The effect of adding Ga on the tensile elongation and minimum creep strain rate was also examined by using regression equations.
Electrostatic Solid Lubricant Coatings: Optimization of Process Parameters and Performance in Tribological Tests
Authors: Paturi Uma Maheshwera Reddy , Narala Suresh Kumar Reddy
Published: October 2017

The scope of this study is to optimize the electrostatic solid lubricant coating deposition process parameters such as electric potential, solid lubricant feed pressure and distance between the nozzle tip to metal substrate on its average surface roughness of the coatings. Statistical design approach was used to plan and confirm the experimental investigation. In addition, tribological performance of coatings is assessed through pin-on-disc tests under dry sliding conditions. Results demonstrate that the electric potential has the most significant effect on the roughness of coatings. Electrostatic solid lubricant coatings works quite satisfactorily in dry sliding conditions and can endow in making sliding process more environmental friendly.
Photocatalytic Application of Graphene-Based TiO2 Nanocomposite
Authors: Loryuenyong Vorrada , Intong Khajornsak , Pongpraphan Vannapa , Suksakkhee Watcharothai , Buasri Achanai
Published: October 2017

Titanium dioxide (TiO2) is one of the most well known photocatalytic materials. However, TiO2 is only photoactive to ultraviolet (UV) light, and the lifetime of the electron-hole pair recombination is too short. In this work, TiO2 anatase nanotubes with an energy band gap of 3.01 eV and specific surface area of 112.46 m2/g were synthesized via hydrothermal method. The results showed that, by incorporating graphene oxide (XGO) and reduced graphene oxide (RGO), the photodegradation efficiency could be enhanced by increasing electron lifetime and charge carrier separation, as well as narrowing the energy band gap. The examination of photodegradation activity under UVC irradiation indicated that a maximum photodegradation efficiency was achieved with TiO2-XGO nanocomposite due to its high specific surface area and strong hydrophilic property.
The Short Hyperacusis Questionnaire: A Tool for the Identification and Measurement of Hyperacusis in the Italian Tinnitus Population
Authors: Tortorella Federica , Pavaci Silva , Fioretti Alessandra Barbara , Masedu Francesco , Lauriello Maria , Eibenstein Alberto
Published: October 2017

The aim of this study was to explore the collapsibility of the Italian version of Khalfa’s hyperacusis questionnaire (HQ). We identified the more statistically significant items of the HQ and created the short hyperacusis questionnaire (SHQ). We recruited 117 consecutive outpatients with a primary complaint of tinnitus at least from 3 months. All patients filled in the complete Italian version of the HQ and underwent an audiological examination including uncomfortable loudness levels (ULLs). A logistic model was carried out getting odds ratios (ORs) estimates of hyperacusis according to the items responses. To create the SHQ, we selected six items that were the only ones to present a statistically significant ORs value different from 1. The internal consistency of the SHQ was assessed by means of Cronbach α index. A ROC analysis was performed and an optimal cut-off point was found using the Youden index. Our analysis showed a Cronbach α of 0.67. The area under the ROC curve (AUC), expression of the overall performance of the SHQ versus the ULLs test, was statistically significant (P<0.05). We found a cut-off of 0.24 as indicative of hyperacusis (sensitivity (Se) = 78.79%, specificity (Sp) = 42.50%). SHQ could be useful only in the initial screening of individuals with hyperacusis. We suggest further studies for the validation of a new questionnaire on hyperacusis.
Hilbert Transformation and Representation of the ax + b Group
Authors: Dang Pei , Liu Hua , Qian Tao
Published: October 2017

In this paper we study the Hilbert transformations over L2() and L2() fromthe viewpoint of symmetry. For a linear operator over L2() commutative with the ax + b group, we show that the operator is of the form λI+ηH, where I and H are the identity operator and Hilbert transformation, respectively, and λ, η are complex numbers. In the related literature this result was proved by first invoking the boundedness result of the operator using some machinery. In our setting the boundedness is a consequence of the boundedness of the Hilbert transformation. The methodology that we use is the Gelfand–Naimark representation of the ax + b group. Furthermore, we prove a similar result on the unit circle. Although there does not exist a group like the ax + b group on the unit circle, we construct a semigroup that plays the same symmetry role for the Hilbert transformations over the circle L2().
Cowpea (Vigna unguiculata (L) Walp.) Performance and yield as influenced by soil types and phosphorus fertilizer in two alfisols at Ado-Ekiti, south-West, Nigeria.
Authors: Omotoso S. O. , Aluko M.
Published: October 2017

This study evaluated the influence of phosphorus (P) application on the growth and yield of cowpea (Vigna unguiculata L) on two soil types in Ekiti State, Nigeria. The sites were Teaching and Research Farm, Ekiti State University, Ado-Ekiti, on a soil classified as Iwo series and a farm at Ikere-Ekiti on a soil derived from charnockite classified as Egbeda Series. The treatments consisted of 0, 20, 40 and 60 kgP ha-1 arranged in randomized complete block design with three replicates. The results indicated that P application significantly influenced growth of cowpea with maximum vine length, number of branches, number of leaves, number of nodules and dry matter yield of 97.4cm, 15.4, 26, 27.5, 32.4g plant-1 respectively. Application of 40kg P. ha-1 gave significantly (P<0.05) highest grain yield of 1583kg ha-1 while Ado-Ekiti soil seems to be the most suitable for cowpea production.Keyword: phosphorus, soil types, cowpea and grain yield.
Diferenciación Veterinaria: cómo la educación veterinaria puede apoyar adecuadamente el desarrollo de la profesión
Authors: Wapenaar Wendela
Published: October 2017

Estamos en un punto crucial en el tiempo para la enseñanza de la veterinaria. La decisión de ampliar el alcance y el potencial de la educación veterinaria es fundamental para  que  la  profesión  pueda  navegar hacia un futuro sostenible. El liderazgo, la colaboración y una visión compartida determinarán el destino de la profesión. La expansión del conocimiento en el ámbito veterinario  es  un  reto  a  la  formación de  los  veterinarios  omnicompetentes. La  educación  veterinaria  puede  apoyar adecuadamente  el  desarrollo  de  la profesión mediante la implementación de una diferenciación en sus programas para responder a la demanda de la sociedad de una manera sostenible. Mediante la formación de los veterinarios a ser más competente  en  animales  de  compañía o  animal  de  producción  se  podría influir positivamente la confianza de los veterinarios,  ayudando  así  a  mejorar su  comunicación  con  los  clientes  y  el bienestar mental. Este artículo describe los retos actuales de la profesión y las oportunidades para la diferenciación en la educación veterinaria de cara a combatir estos desafíos.
La formación docente de los profesores de Veterinaria en España
Authors: Encinas Cerezo Mª Teresa , Gilabert Santos Juan Antonio , Ros Rodríguez JoséMaría
Published: October 2017

Durante mucho tiempo, a los profesores universitarios no se les ha exigido ninguna titulación específica ni capacitación certificada en docencia para acceder a la enseñanza superior. Así, la formación docente del profesor universitario suele ser, en la mayoría de los casos, un proceso autodirigido que no cuenta con caminos reglados para afrontar la continua y necesaria actualización ante los cambios tecnológicos, metodológicos y estructurales de la educación superior en los últimos años. Sin embargo, muchos profesores buscan formarse y mejorar sus habilidades docentes a través de una oferta dispersa y amplia de cursos y actividades. Desde la creación del EEES, se ha incrementado el interés de nuestras universidades y colectivos profesionales por la formación continuada de sus profesores como profesionales, como una garantía para la actualización y calidad en la docencia universitaria. A través de sus institutos y departamentos de Ciencias de la Educación, las universidades asumen la responsabilidad de ofrecer a sus profesores una oferta muy variable de actividades formativas. En este artículo se analizan distintos aspectos relacionados con la formación docente del profesor en el ámbito de las ciencias de la Salud y de la Veterinaria en particulas: los ámbitos formativos, la oferta de actividades formativas regladas y no regladas (congresos, reuniones, lecturas, publicaciones), la capacidad y posibilidad de innovación docente, y la valoración y los sistemas de evaluación institucional que actualmente existen en las universidades en las agencias evaluadoras de la calidad.
Facing reality: the growth of virtual reality and health sciences libraries
Authors: Lessick Susan , Kraft Michelle
Published: October 2017

Virtual reality (VR) is an increasingly hot tech topic. Because VR may be the ultimate virtual project as defined by this column, replacing the real world with a simulated one, it is worthwhile to pause and reflect on its potential and practicality for health sciences libraries.
The Makerspace Librarian’s Sourcebook
Authors: Connor Elizabeth
Published: October 2017

Throughout this contributed work, the emphasis is on imagination, collaboration, and production rather than technology, but considerable attention is paid to specific tools for makers.
Democratizando el mar con perspectiva de género. El proceso de profesionalización de las mariscadoras a pie en Galicia
Authors: Martínez García Patricia
Published: October 2017

La profesionalización de las mariscadoras a pie en Galicia es un ejemplo de gobernanza con perspectiva de género. Una iniciativa que se traduce en la participación de las mujeres en todas las fases de la política, la horizontalidad de las relaciones entre ellas y el personal experto y político y un impacto positivo en la posición femenina en una sociedad atravesada por la desigualdad. A este respecto, el trabajo y las vivencias de estas profesionales se enmarcan en las comunidades pesqueras, donde se reproducen las lógicas de exclusión del sistema sexo-género. Estas lógicas se manifiestan físicamente en el binomio mar-tierra, que encarna las dualidades jerarquizadas público-privado y producción-reproducción. No obstante, su implicación en el dispositivo impulsado por la Administración gallega para su profesionalización en la década de los noventa, provoca una serie de cambios en el ámbito material y social, que deriva en un empoderamiento individual y colectivo. A partir de la recopilación de informes, análisis de prensa y de entrevistas en profundidad a técnicas y profesionales implicadas, se realiza una reconstrucción de este proceso para examinar cómo la perspectiva de género impacta en los resultados, el diseño, la gestión y la organización de este mecanismo. Se concluye así que esta experiencia de gobernanza democratiza las estructuras de la pesca en términos de inclusividad. Sin embargo, no alcanza un objetivo transformativo general al no extenderse una epistemología y praxis feminista que cuestionen las lógicas androcéntricas que rigen dichas comunidades.
Higher UHMWPE Wear-Rate in Cementless Compared with Cemented Cups with the Saturne® Dual-Mobility Acetabular System
Authors: Tabori-Jensen Steffan , Frølich Christina , Hansen Torben B. , Bøvling Søren , Homilius Morten , Stilling Maiken
Published: October 2017

Introduction

Dual mobility (DM) total hip arthroplasty (THA) may reduce dislocation risk, but might increase the risk of high polyethylene (PE) wear due to double wearing surfaces.

Methods

127 patients (97 female) with 129 hips operated with THA after displaced femoral neck fracture FNF between 2005 and 2011, were seen for a cross-sectional clinical follow-up. Acetabular components were Saturne® DM cups with 28mm chrome-cobalt heads in UHMWPE. Cementless cups (n = 73) were hydroxyapatite coated. Radiographs were obtained for analysis of cup placement, 2D polyethylene wear and wear-rate (PolyWare 3D), and further radiological evaluation. Activity measurements included Timed Up and Go test (TUG) and walking distance from Harris Hip Score (HHS).

Results

At a mean follow-up of 2.83 (1.0-7.7) years the mean wear was 0.82 mm (range 0.17-4.51, SD 0.50), and the wear-rate was 0.37 mm (range 0.06-1.90, SD 0.29). Wear-rate of 0.43 mm/year (SD 0.30) in cementless cups was higher (p = 0.004) than 0.30 mm/year (SD 0.27) in cemented cups. Mean age at time of surgery was 75.1 years (range 30-95). There was no correlation between age at time of surgery and wear (p = 0.56). There was no correlation between cup inclination and wear-rate (p = 0.35). TUG was mean 13.4 seconds (range 4.5-30.1) and correlated with wear rate (p = 0.03).

Conclusions

At short term follow-up, the mean wear-rate in old and low demand patients was high, correlated to activity, and was above the generally accepted osteolysis threshold (0.1 mm/yr.). Cementless HA-coated cups had higher wear-rate than cemented cups.
Balance teológico de la UPOLI al final del siglo y milenio
Authors: Torres José Miguel
Published: October 2017

El presente trabajo parte de un libro que se realizara en la UPOLI, en ocasión de su 40 aniversario de fundación (2007). Dada su plena vigencia, tenemos el honor de publicarlo en nuestra revista Cultura de Paz, como parte del acompañamiento que el IMLK viene brindando desde nuestras páginas en el año del 50 aniversario (1967-2017). El Rev. José Miguel Torres h., teólogo ecuménico, pastor bautista y pacifista (q.e.p.d), nos ofrece una lectura teológica de la fundación y desarrollo de la UPOLI, el imaginario de quienes escribieron su propia historia, los factores que incidieron en la riqueza de su visión: bíblicos, políticos, sociológicos, históricos y ecuménicos. El teólogo ecuménico deja abiertas las puertas de las nuevas generaciones a continuar enriqueciendo con nuevas perspectivas teológicas esta historia también abierta y de anticipación que representa la UPOLI.
Pensar la ciencia y la técnica de otro modo
Authors: Rodríguez Anido Julio , Castillo Nydia María
Published: October 2017

Es época de cambios profundos que interpelan al mundo de la cultura y la educación. La crisis de todo orden que estremece al mundo indica la necesidad de crear nuevas formas de pensar; en ese proceso de transformación, la ciencia y la tecnología juegan un papel fundamental.Aparecen así diversos escenarios alternativos en el porvenir posible o imaginable; ellos dicen lo que puede ser el mundo a venir, al menos, en los próximos veinticinco años. Las sociedades de la incertidumbre y el riesgo de hoy, previenen: se necesitan nuevas formas de pensar para imaginar el mundo por venir. No solo la paz del mundo está en juego; es la vida misma la que se halla en peligro.
Manejo de pastizales en sistema de producción ganaderos de Nueva Guinea, Costa Caribe Sur de Nicaragua
Authors: Álvarez Amador Carlos , Cruz Pastora Wilberto Antonio
Published: October 2017

Esta investigación se encaminó a la caracterización del manejo de las pasturas que hacen los ganaderos de Nueva Guinea, Nicaragua. El enfoque de la investigación fue cuantitativo, tipo descriptiva, se tomó una muestra de 100 ganaderos. La información fue recolectada a través de encuestas, y por las características de algunas variables también se hizo uso de formatos de recolección y medición de datos. El procesamiento de la información se realizó con el paquete estadístico SPSS versión 15,0. Se encontró una diversidad representativa de especies de pastos, tanto de pastoreo continuo como de corte, con una predominancia de retana (Ischaemum ciliare) y Brachiaria brizantha cv. Marandú, estos en su mayoría con un manejo poco tecnificado, pues los productores (mujeres y hombres) aún no son conscientes que las áreas de pasturas son un cultivo y deben manejarse como tal, el período de ocupación de las pasturas promedia 7 días, con una carga animal de 2,5 cabezas de ganado/manzana y un periodo de descanso de 23 días, con niveles de degradación que van desde leve hasta severo.
Estrategia comunicacional para el “Preescolar Arlen Siú"
Authors: Padilla Sánchez Ana Guadalupe
Published: October 2017

El objetivo de esta investigación es la elaboración de una estrategia de comunicación para poder facilitar el flujo comunicacional en el preescolar Arlen Siú. Se realizó un diagnóstico en el centro en el cual se reflejara la realidad comunicacional que existe en el centro educativo. La falta de estrategias claras de comunicación interna, externa e interinstitucional, retrasa los procesos y obstruye la abstención de una mejor organización y esto repercute de manera negativa en el preescolar Arlen Siú. Esta investigación se ubica en la clasificación exploratoria, porque no se había realizado un proceso de investigación sobre la situación de comunicación institucional que aportase a la construcción y validación de una estrategia comunicacional.
Estrategias metodológicas para el desarrollo lógico-matemático Nivel I ciclo de Educación Inicial
Authors: Urbina Espinoza Elba María , Rodríguez Canales Daysi Marlene , Sequeira Calero Valinda
Published: October 2017

La investigación “Estrategias metodológicas para el desarrollo lógico-matemático del niño Carlos José del III nivel del I ciclo de Educación Inicial en el Centro Escolar Santa Rosa, Barrio Santa Rosa ubicado en el distrito VI del municipio de Managua en el I semestre, del año 2014” se realizó bajo el enfoque investigación-acción el cual se constituye de diferentes etapas.  Esto nos permitió familiarizarnos, observar, caracterizar, explorar, indagar, diagnosticar, reflexionar y proponer diferentes estrategias que pueden ser incluidos en el sistema educativo para poder dar respuestas a las necesidades del niño.  A través del diagnóstico se identificó lo siguiente: el niño presentaba dificultades en el desarrollo lógico- matemático; la docente no muestra interés en las necesidades del niño quien es ignorado y no apoyado en su proceso de enseñanza aprendizaje.  Moomaw, (2011), comparte que los niños que aprenden los fundamentos de matemáticas en la etapa preescolar tienen las mejores posibilidades de logros escolares. Esto nos facilitó el planteó de objetivos y estrategias que se aplicaron con el propósito de superar dificultades observadas, desarrollando actividades dirigidas a la seriación, agrupación y clasificación, que ayudaran al niño en el  desarrollo de su proceso lógico- matemático.  Los resultados fueron notorios y nos sensibilizó más con nuestro trabajo hacia los niños, obtuvimos sentido de comprensión y  compromiso al desempeñar un trabajo de calidad con estos individuos en proceso de desarrollo, dándoles un seguimiento adecuado con el estímulo, la comprensión, el sentido de pertenencia,  dedicación, preparación y la autoevaluación.
En sus voces: Testimonios orales de femicidas
Authors: Rojas Icabalzeta Ruth Nohemí
Published: October 2017

La necesidad de contener el fenómeno del femicidio frente a una cultura con escasa educación que apunta al respeto entre los géneros, origina la pertinencia de aportar a esta temática. En Nicaragua cada vez aumentan las cifras de mujeres asesinadas por sus cónyuges, ex parejas sentimentales y personas cercanas a su entorno, por lo que hacen falta campañas de concientización que promuevan el respeto y la equidad de género. En algunos espacios de medios de comunicación, políticos y educativos, la violencia contra la mujer se ha convertido en un tema atrayente; pero este se ha asimilado desde trillados discursos de grupos que intentan defender sus derechos. Tratando de volcar un poco esta tendencia, y en la osadía, tal como fue nombrado este lance, se recurre a la metodología basada en el microanálisis del discurso, fundamentada en la teoría biográfica de Fritz Schütze por medio de los procesos biográficos estructurados de hombres que privaron la vida de mujeres, lo cual permite conocer la concepción de los sujetos de estudio.
Los murales de la UNAN-Managua. Lugar de permanente batallas por la memoria
Authors: Gaitán Lugo Luis Javier
Published: October 2017

El presente ensayo tiene por objetivo analizar la memoria histórica institucional de la UNANManagua manifestada en los distintos murales que en ella se encuentran y sus vinculaciones con la sociedad de hoy. Como el título expresa, se centra la atención en la elaboración de pintas a lo interno de la Institución, las etapas de la elaboración de murales, y su significado en la actualidad. El estudio realizado parte de los presupuestos teóricos que brinda la Historia del Tiempo Presente y de manera particular la memoria histórica de la sociedad como problema de investigación. Aparte de los análisis teóricos, se llevaron a cabo dos entrevistas, asimismo, se hizo uso de la técnica fotográfica para dar respaldo a las ideas planteadas.
Prevalencia de la enfermedad de Hansen en el barrio Francisco rojas del municipio de Tipitapa
Authors: Marín Pérez Magdalena , Pérez Pilarte Génesis Carolina
Published: October 2017

El presente estudio permitió evaluar la prevalencia de la Enfermedad de Hansen  en  el barrio Francisco Rojas del municipio de Tipitapa, departamento de Managua, durante el período de Diciembre 2012 a Febrero 2013. Para cumplir tal objetivo se realizaron visitas domiciliares a los contactos de los pacientes diagnosticados con Enfermedad de Hansen durante los años 2000 al 2012 en el Centro Nacional de Dermatología, denominados éstos como casos guías. Durante estas visitas se realizó una inspección completa de la piel a todos los contactos, surgiendo así pacientes con lesiones sospechosas de la enfermedad, a los cuales se les realizaron baciloscopía y biopsia para confirmar el diagnóstico y clasificar la enfermedad. Partiendo de los 9 casos guías surgieron 6 casos nuevos. La prevalencia de la enfermedad para el  año 2012 en el barrio Francisco Rojas fue de 10.85 por 10,000 habitantes, la tasa de detección fue de  13.02 por 10,000 habitantes y la proporción de casos en menores de 15 años fue 16.66 %. Tomando en cuenta estos indicadores se puede concluir que existe un foco activo de lepra en el barrio Francisco Rojas del municipio de Tipitapa, y por sus características epidemiológicas debe considerarse un problema de salud pública. Por lo que se recomienda priorizar el diseño de un programa de atención y vigilancia epidemiológica de la Enfermedad de Hansen para un mejor control en la transmisión de la misma.
Effectiveness of teaching aided by distance learning
Authors: Molga Agnieszka , Golec Paweł
Published: October 2017

In the information society conditions and social needs are constantly changing. The development of information technology together with the new methods of gathering and distributing information that have been generated open the way to alternative forms of education in knowledge society. Intensive development of distance education is a response to changes caused by the escalating pace of innovation in many areas of social and economic life. Computers and the Internet are replacing the previous model of traditional education. The development of technology has contributed to the search of mobile forms of learning, or e-learning. E-learning allows you to fill gaps in the traditional teaching. Modern techniques allow you to find previously unknown solutions that can be used to streamline the process of distance learning. Both traditional education and the world of business treat e-learning as an effective tool that supports science. The convenient application of this tool, the opportunity to individually decide about the time devoted to studying, low costs and easy access speak for applying e-learning as an educational method.
This article attempts to present the role of the Internet in the educational process. The aim of the paper was to show the influence of e-learning on raising the efficiency of education.