bluuebunny/crossref_metadata_2025 huggingface dataset:
On the focal mechanism of southeast Asian earthquakes
Authors: Ritsema A R
Published: April 2019

The mechanism in the focus of about, 60 southeast Asian earthquakes has been determined. Byerly's method (1938) in the form developed by the present writer is used. With the help of seismogram readings of the position of the line of polarization of S waves it was
determined that in at least twelve of the shocks a single couple of forces acting along the line of fault movement was the cause of the earthquakes (Keylis-Bonok, 1956). In about half of the total material, however, no conclusive evidence could be found for a choice between this type of mechanism in
the focus and that of two opposite couples of forces of equal magnitude acting along lines perpendicular to each other (Honda, 1957). In the following it is assumed that these shocks also are caused by the first mentioned force system in the focus. Following and amplifying Hodgson's statement
(1958), it is concluded that sufficiently reliable data for earthquake mechanism studies can be expected only from P, PKP and S waves. According to the fault movements in the focus different earthquake types are distinguished (transcurrent, clockwise and counterclockwise, normal and reversed).
In the section dealing with southeast Asian earthquake mechanism it is seen that transcurrent fault movements are about three times more common than they should be in case of a chance distribution of earthquake types. Evidence is given for small differences of earthquake mechanisms in depth and
region. It is concluded that most of the fault displacements are directed perpendicular to the steeply dipping zones of seismic activity in the region. Also in the shocks in which these directions do not coincide, the plane of action still stands more or less perpendicular to this zone. This
coincidence for the great majority of the earthquakes can only mean that the distribution of earthquakes in space and the fault displacements of the same probably are expressions of one and the same causal fact.
From the earthquake mechanisms shown to exist in the New Guinea-Solomons arcs it should follow that in these areas the seismic activity is concentrated in a zone steeply dipping under the Pacific Ocean side and not under the continental (i.e. Australian) side as is the case in the Sunda and the
Celebes-Philippines arcs.
”Honeycomb” pattern of gallbladder wall thickening – A forward step in early diagnosis of “Severe Dengue Fever”
Authors: Parmar Jitendra , Vora Maulik , Mohan Chander , Shah Sandip , Mahajan Harsh , Patel Tapan
Published: April 2019

Aims and Objectives: To study “Honeycomb” pattern of gallbladder wall thickening (GBWT) in dengue fever (DF) and to assess its clinical significance in early diagnosis of severe DF. Materials and Methods: A total 244 patients of DF were studied, 84 patients were classified as severe DF, 61 patients as DF with warning signs, and 99 patients as DF without warning signs. Abdominal ultrasound was performed for assessment of GBWT patterns, hepatomegaly, splenomegaly, pancreatic enlargement, ascites, pleural effusion, and other additional findings were recorded in severe DF cases. Statistical comparison between “Honeycomb” pattern of GBWT and clinically severe DF was done using Pearson correlation test. Results: Out of 244 patients, 145 patients were males and 99 patients were females, belonging to various age groups ranging from 1 to 81 years and 14.34% (35 patients) among them included in pediatric group. In total, 65.57% (160 patients) were non-severe DF cases and 34.42% (84 patients) were severe DF cases. A total of 84 patients of severe DF, 92.85% patients showed GBWT, and out of which, 71.42% patients had “Honeycomb” pattern, whereas a total of 160 patients of non-severe DF patients, 45% patients had GBWT and out of which, only 5.6% patients showed “Honeycomb” pattern.”Honeycomb” pattern of GBWT shows sensitivity of 71.4%, 94.37%, Positive predictive value of 86.95%, and Negative predictive value of 86.28% in severe DF. Conclusion:”Honeycomb” pattern of GBWT is significant finding in severe DF. Its sensitivity and specificity are high in severe DF with significant statistical correlation. It can aid in early diagnosis of severe DF.
Role of apparent diffusion coefficient as a biomarker in the evaluation of cervical cancer
Authors: Dashottar Sunita , Pany T Preeth , Lohia Nishant
Published: April 2019

Background: Diffusion-weighted magnetic resonance imaging (DW-MRI) has evolved as a major diagnostic and prognostic tool in cervical cancer. The aim of our study was to compare the change in mean apparent diffusion coefficient (ADC) value before and after concurrent chemoradiation therapy (CCRT) in carcinoma cervix thereby establishing its role as a cancer biomarker. Materials and Methods: A hospital-based prospective study was conducted in 35 patients diagnosed with cervical cancer. All 35 patients underwent pelvic MRI before and after 6 months of CCRT. The study was done over a period of 12 months. Conventional axial and sagittal T2 imaging was followed by DW-MRI. In the axial DW/ADC images at “b-value” of 800 s/mm2, a circular region of interest was drawn covering more than 60% of the tumor volume to calculate the ADC values. Statistical Package for the Social Sciences (version 21.0) was used for statistical evaluation. Chi-square test, independent samples t-test, and analysis of variance were used to analyze the data. The results are depicted as frequencies (number), proportion (percentages), and mean ± standard deviation. Results: Pre-CCRT mean ADC value was 0.814 × 10−3 mm2/s. Post-CCRT mean ADC value was 1.294 × 10−3 mm2/s. Mean ADC value of patients having lymph node involvement and parametrial extension was significantly lower when compared with those without lymph node involvement and parametrial extension (P = 0.001). Nonresponders with residual lesion had lower ADC values than responders with no residual lesion. An interesting and unique observation was that pre-CCRT mean ADC value of responders was higher than nonresponders. Conclusion: An increase in mean ADC value of 0.480 × 10−3 mm2/s after CCRT was found to be statistically significant (P < 0.001) thereby proving its role as an imaging biomarker in cancer cervix.
Jaffe–Campanacci syndrome: Any role for 99mTc-methylene diphosphonate bone and 99mTc-octreotide scans for evaluation of the disorder?
Authors: Qutbi Mohsen , Ghanbari Sajad , Asli Isa Neshandar , Shafiei Babak
Published: April 2019

Jaffe–Campanacci syndrome (JCS) is a rare clinical disorder with almost unknown etiology. The main feature of this syndrome is skeletal involvement as nonossifying fibroma which may cause severe morbidity to these patients. X-ray imaging is the widely available modality for evaluation of skeleton, but radionuclide imaging modalities may have a role in workup. Herein, we present a case of JCS evaluated with 99mTc-methylene diphosphonate bone and 99mTc-octreotide scans for the extent of skeletal involvement. To the best of our knowledge, from over than 30 cases reported in the literature, no evaluation with radionuclide imaging has been done.
Triple-site radiotracer application in breast lymphoscintigraphy and sentinel node discordance
Authors: Freebody John A. , Fernando Shane , Rossleigh Monica
Published: April 2019

Sentinel lymph node (SLN) biopsy (SLNB) has demonstrated accuracy in the axillary staging of breast cancer patients. Despite variability in selection criteria and technique, an SLN is consistently identified in approximately 96% of cases and in most series predicts the status of remaining axillary LNs in >95% of cases. The false-negative rate of sentinel lymph node biopsy (SLNB) was originally reported as 5%–10% (sensitivity 90%–95%), but improved rates are attainable by experienced surgeons. Radiolocalization with lymphoscintigraphy (LSG) increases SLN identification rates. LSG is a useful tool to establish the abnormal lymphatic drainage patterns and to detect the extra-axillary nodes, particularly internal mammary nodes. Despite controversy regarding the optimal injection method, studies have generally suggested high concordance between the various radiotracer application sites and axillary SLN identification. Discordant SLN identification would have implications for nodal staging as the true SLN might not be identified with individual injection techniques. In the current study, imaging from consecutive patients presenting for breast LSG over a-19 month period was retrospectively reviewed. Radiotracer application was performed with simultaneous injection of peritumoral, subcutaneous, and subareolar regions. This application method provided a mechanism to assess the LSG drainage patterns with a view to assessing injection site concordance and SLN identification rates. Data from 123 breast LSG patients were reviewed. Using our radiotracer technique, the axillary SLN identification rate was 98%. A single axillary node was detected in 110, two axillary nodes were detected in 10, and no axillary node was detected in three patients. Among those 10 patients in whom two axillary nodes were seen, at least two cases of discordant drainage occurred from different injection sites. This study demonstrates that different LSG injection sites can result in the identification of different axillary sentinel nodes although this appears to be a rare event. This finding may be of clinical importance if the true SLN is sought. In addition, the multisite injection technique appears to be an optimal method of axillary SLN identification, with high SLN detection rates.
Benefits of adding coronary calcium score scan to stress myocardial perfusion positron emission tomography imaging
Authors: Fathala Ahmed , Aboulkheir Mervat , Bukhari Salwa , Shoukri Mohamed M , Abouzied Moheieldin M
Published: April 2019

There have been little and conflicting data regarding the relationship between coronary artery calcification score (CACS) and myocardial ischemia on positron emission tomography myocardial perfusion imaging (PET MPI). The aims of this study were to investigate the relationship between myocardial ischemia on PET MPI and CACS, the frequency and severity of CACS in patients with normal PET MPI, and to determine the optimal CACS cutoff point for abnormal PET. This retrospective study included 363 patients who underwent same-setting stress PET perfusion imaging and CACS scan because of clinically suspected coronary artery disease (CAD). Fifty-five (55%) of the 363 patients had abnormal PET perfusion. There was an association between sex, diabetes mellitus (DM), smoking, and CACS and PET perfusion abnormities with P = 0.003, 0.05, 0.005, and 0.001, respectively. However, there was no association between PET perfusion abnormalities with age, body mass index, hypertension, and hypercholesterolemia. There was association between CACS and age, sex, and DM with P = 0.000, 0.014, and 0.052, respectively, and stepwise increase in the frequency of myocardial ischemia and CACS groups. Receiver-operating characteristic analysis showed that a CACS ≥304 is the optimal cutoff for predicting perfusion abnormalities with sensitivity of 64% and specificity of 69%. In conclusion, the frequency of CAC in patients with normal PET MPI is 49%, it is highly recommended to combine CACS with PET MPI in patients without a history of CAD. PET MPI identifies myocardial ischemia and defines the need for coronary revascularization, but CAC reflects the anatomic burden of coronary atherosclerosis. Combining CACS to PET MPI allows better risk stratification and identifies high-risk patients with PET, and it may change future follow-up recommendations. CACS scan is readily available and easily acquired with modern PET-computed tomography (CT) and single-photon emission CT (SPECT)-CT with modest radiation exposure.
Evaluation of recurrent parathyroid carcinoma: A new imaging tool in uncommon entity
Authors: Thanseer N. T. K. , Parihar Ashwin Singh , Sood Ashwani , Bhadada Sanjay Kumar , Dahiya Divya , Singh Priyanka , Mittal Bhagwant Rai
Published: April 2019

Parathyroid carcinoma (PTC) is a rare endocrine tumor and uncommon cause for primary hyperparathyroidism.18F-fluorocholine (FCH) positron emission tomography and computed tomography (PET/CT) has shown promising results in the detection of parathyroid adenoma, though its role in PTC is undefined due to the paucity of incidence. The authors in this case report discuss the possible complimentary role of FCH PET/CT with 18F-fluorodeoxyglucose PET/CT in the evaluation of the management of suspected recurrence, since this rare entity has high loco-regional and distant recurrence of the disease.
18F-fluorodeoxyglucose positron emission tomography/computed tomography in childhood metastatic epithelioid hemangioendothelioma of the liver: Altering the management plan
Authors: Parihar Ashwin Singh , Vadi Shelvin Kumar , Mittal Bhagwant Rai , Singh Harmandeep , Kumar Rajender , Behera Arunanshu
Published: April 2019

Hepatic epithelioid hemangioendothelioma (EHE) is an uncommon vascular tumor, primarily seen in 20–40 years of age. We report the case of a 14-year-old boy with EHE and distant metastases identified on 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT), leading to a change in the management plan.18F-FDG PET/CT proved to be useful in identifying the rare sites of metastasis and planning further treatment.
Can VHF radars at polar latitudes measure mean vertical winds in the presence of PMSE?
Authors: Gudadze Nikoloz , Stober Gunter , Chau Jorge L.
Published: April 2019

Abstract. Mean vertical velocity measurements obtained from radars at polar latitudes
using polar mesosphere summer echoes (PMSEs) as an inert tracer have been
considered to be non-representative of the mean vertical winds over the last
couple of decades. We used PMSEs observed with the Middle Atmosphere Alomar
Radar System (MAARSY) over Andøya, Norway (69.30∘ N,
16.04∘ E), during summers of 2016 and 2017 to derive mean vertical
winds in the upper mesosphere. The 3-D vector wind components (zonal,
meridional and vertical) are based on a Doppler beam swinging experiment
using five beam directions (one vertical and four oblique). The 3-D wind
components are computed using a recently developed wind retrieval technique.
The method includes full non-linear error propagation, spatial and temporal
regularisation, and beam pointing corrections and angular pointing
uncertainties. Measurement uncertainties are used as weights to obtain
seasonal weighted averages and characterise seasonal mean vertical
velocities. Weighted average values of vertical velocities reveal a weak
upward behaviour at altitudes ∼84–87 km after eliminating the
influence of the speed of falling ice. At the same time, a sharp decrease
(increase) in the mean vertical velocities at the lower (upper) edges of the
summer mean altitude profile, which are attributed to the sampling issues of
the PMSE due to disappearance of the target corresponding to the certain
regions of motions and temperatures, prevails. Thus the mean vertical
velocities can be biased downwards at the lower edge, and the mean vertical
velocities can be biased upwards at the upper edge, while at the main central
region the obtained mean vertical velocities are consistent with expected
upward values of mean vertical winds after considering ice particle
sedimentation.
Hybrid improved empirical mode decomposition and BP neural network model for the prediction of sea surface temperature
Authors: Wu Zhiyuan , Jiang Changbo , Conde Mack , Deng Bin , Chen Jie
Published: April 2019

Abstract. Sea surface temperature (SST) is the major factor that affects the
ocean–atmosphere interaction, and in turn the accurate prediction of SST is
the key to ocean dynamic prediction. In this paper, an SST-predicting method
based on empirical mode decomposition (EMD) algorithms and back-propagation
neural network (BPNN) is proposed. Two different EMD algorithms have been
applied extensively for analyzing time-series SST data and some nonlinear
stochastic signals. The ensemble empirical mode decomposition (EEMD) algorithm
and complementary ensemble empirical mode decomposition (CEEMD) algorithm
are two improved algorithms of EMD, which can effectively handle the
mode-mixing problem and decompose the original data into more stationary
signals with different frequencies. Each intrinsic mode function (IMF) has
been taken as input data to the back-propagation neural network model. The
final predicted SST data are obtained by aggregating the predicted data of
individual series of IMFs (IMFi). A case study of the monthly mean SST anomaly (SSTA) in the
northeastern region of the North Pacific shows that the proposed hybrid
CEEMD-BPNN model is much more accurate than the hybrid EEMD-BPNN model, and
the prediction accuracy based on a BP neural network is improved by the CEEMD
method. Statistical analysis of the case study demonstrates that applying
the proposed hybrid CEEMD-BPNN model is effective for the SST prediction.
Highlights include the following: Highlights.
An SST-predicting method based on the hybrid EMD algorithms and BP neural
network method is proposed in this paper. SST prediction results based on the hybrid EEMD-BPNN and CEEMD-BPNN models
are compared and discussed. A case study of SST in the North Pacific shows that the proposed hybrid
CEEMD-BPNN model can effectively predict the time-series SST.
Innovación agua y TIC en contexto de grupos vulnerables en Nicaragua.
Authors: López Mario Ramón
Published: April 2019

El ensayo aborda la cuestión de cómo analizar la relación entre el uso de las tecnologías de la información y la comunicación con respecto al recurso hídrico. Se argumenta que en los países en desarrollo como Nicaragua es más probable que se investigue el tipo de modo de innovación de DUI en el contexto de grupos vulnerables que viven en áreas rurales. Se encontró que algunas innovaciones ya identificadas son más del tipo de innovación frugal y, en este sentido, son más adecuadas para grupos vulnerables. En este caso, se concluye que el acuerdo estructural tecnológico y el acuerdo social institucional coexisten y deben tenerse en cuenta cuando se analizan las innovaciones con respecto al recurso hídrico y lo que es más importante para captar el conocimiento tácito que los usuarios del agua proporcionan mediante el uso de dispositivos de las tecnologías de la información y la comunicación.
Cálculo del ingreso nacional bruto en dólares utilizando el factor de conversión Atlas del Banco Mundial
Authors: Canales Ricardo José
Published: April 2019

El artículo tiene como objetivo mostrar el cálculo del Ingreso Nacional Bruto en dólares mediante el Método Atlas del Banco Mundial.  Es un estudio cuantitativo, se utiliza una serie de tiempo del 2013 al 2017. Las estimaciones muestran un crecimiento del PNB per cápita del 4.3% promedio anual. En este mismo periodo el consumo per cápita de los hogares creció 3.5% anual.  El tipo de cambio estimado con el método Atlas tiene una evolución más estable que el tipo de cambio nominal. La técnica  estima un tipo de cambio promedio de los últimos tres periodos ajustados por la diferencia entre la tasa de inflación del país y la de Estados Unidos.
Complications of radio- and radiochemotherapy in patients undergoing major salivary gland cancer surgery
Authors: Kordzińska-Cisek Izabela , Grzybowska-Szatkowska Ludmiła
Published: April 2019

Purpose: The aim of this retrospective study was to present the prevalence of early and late radiation-induced reaction and
factors affecting its formation and severity in patients after adjuvant radio- or radiochemotherapy in salivary gland cancer.
Material and methods: A total of 113 patients with early and 91 with late radiation-induced reaction, irradiated in 2006-2016
were enrolled in the study. The frequency of acute mucosal radiation-induced reaction, time of onset, intensity, healing time,
as well as the incidence of late radiation-induced reaction from the skin and subcutaneous tissue were analyzed. Factors that
could influence the development and intensity of reaction were identified.
Results: Acute severity and the presence of late radiation-induced reaction do not affect overall survival. Dosage in the
tumor bed site, as well as the dosage in the nodal region, affect the severity of the acute radiation-induced mucosal reaction. The
severity of the early radiation-induced reaction is higher in men, more advanced patients (higher T and N+ in TNM classification),
irradiated into a larger area, and those in whom two-dimensional planning and complementary chemoradiotherapy were
applied. The late reaction of the skin and subcutaneous tissue was dominated by patients irradiated in the nodal regions and
those with a higher intensity of early radiation-induced reaction.
Conclusions: Supplementary radiotherapy or radiochemotherapy in salivary gland cancer is associated with acceptable
toxicity which has no effect on overall survival.
Impact of adenoid hypertrophy on the open bite in children
Authors: Poddębniak Justyna , Zielnik-Jurkiewicz Beata
Published: April 2019

Nasal obstruction caused by adenoid hypertrophy can lead to malocclusion. The research material consisted of children aged 7-12 years with adenoid hypertrophy qualified for adenoidectomy. On the basis of the conducted tests (laryngological, orthodontic, pediatric), the occurrence of open frontal bite in children with pharyngeal tonsil hypertrophy, in particular in boys, was confirmed in comparison to children without hypertrophy correctly breathing through the nose.
ACRL honors the 2019 award winners, part 1: A recognition of professional development
Authors: Ollis Chase
Published: April 2019

John Price Wilkin wins Hugh C. Atkinson Memorial awardLuiz wins CJCLS/EBSCO Community College Learning Resources Program AwardGarczynski named EBSS Distinguished LibrarianNelson receives ESS De Gruyter GrantExcellence in Academic Libraries Award winnersBluemle receives IS Ilene F. Rockman Publication of the Year AwardKellam named Marta Lange/SAGE-CQ Press Award winner
Librarians as critical friends: Developing a sustainable peer observation process
Authors: Dimmit Laura , Maxwell Caitlan , Nesvig Chelsea
Published: April 2019

Librarians at the University of Washington- Bothell and Cascadia College Campus Library engage in information literacy instruction offered in targeted courses across the curriculum. A focus of these targeted courses is multiple sections of 100-level college introduction and research writing. Most classroom instruction happens by a single librarian in front of a group of students and a faculty member. With approximately 15 librarians engaging in an average of 10 to 12 instruction workshops each academic quarter, our instruction program is robust and dynamic but lacks a built-in mechanism for observation and feedback.
Grants and Acquisitions
Authors: Galloway Ann-Christe
Published: April 2019

The Library of Congress has received a $540,000 grant from The Andrew W. Mellon Foundation to evaluate the physical health of the national collection of books in American research libraries and to guide their archive retention and preservation decisions. Since there currently is no objective formula to assess the condition of millions of books in the custody of the nation’s libraries, this scientific study will help inform best practices and provide a baseline for libraries to analyze their print collections based on established scientific guidelines. This is the first effort of its kind to lay the scientific groundwork for the development of a national effort to preserve the corpus of books held in American libraries.
The conception of substitution of the equals sign plays a unique role in students' algebra performance
Authors: Simsek Emine , Xenidou-Dervou Iro , Karadeniz Ilyas , Jones Ian
Published: April 2019

Students’ conceptions of the equals sign are related to algebraic success. Research has identified two common conceptions held by children: operational and relational. The latter has been widely operationalised in terms of the sameness of the values on each side of the equals sign, but it has been recently argued that the substitution component of relational equivalence should also be operationalised (Jones, Inglis, Gilmore, & Dowens, 2012, https://doi.org/10.1016/j.jecp.2012.05.003). In this study, we investigated whether students’ endorsement of the substitution definition of the equals sign is a unique predictor of their algebra performance independent of the other two definitions (operational and sameness). Secondary school students were asked to rate the ‘cleverness’ of operational, sameness, and substitution definitions of the equals sign and completed an algebra test. Our findings demonstrate that endorsement of substitution plays a unique role in explaining secondary school students’ algebra performance above and beyond school year and the other definitions. These findings contribute new insights into how students’ algebra learning relates to their conceptions of the equals sign.
Spatial skills first: The importance of mental rotation for arithmetic skill acquisition
Authors: Georges Carrie , Cornu Véronique , Schiltz Christine
Published: April 2019

Considering the importance of arithmetic in school curricula, it is crucial to understand the cognitive processes underlying its successful acquisition. Previous research suggests the involvement of spatial skills, especially during arithmetic skill acquisition. We assessed the predictive effect of mental rotation on different arithmetic components in children halfway through elementary school. At this stage, additions and subtractions are already well mastered, while multiplications and divisions are newly acquired. Although mental rotation positively correlated with arithmetic performances regardless of operation, only multiplication, division and completion performances were significantly predicted by mental rotation when controlling for age, gender as well as domain-specific symbolic number skills and visuospatial short-term memory. This highlights the differential effects of mental rotation on arithmetic and suggests a particular importance for newly acquired arithmetic material. These findings extend previous research on the relation between spatial skills and arithmetic and yield practical information for mathematical education and instruction.
La práctica de actividad física y su relación con la satisfacción laboral en una consultora informática
Authors: Gómez-Chacón R. , Morales-Sánchez V. , Hernández-Mendo A. , Muñoz-Llerena A.
Published: April 2019

Las organizaciones actuales y modernas están iniciándose en implementar acciones de gestión y promoción de la salud con el objeto de mejorar su calidad de vida y la productividad de la empresa. Una de las variables que impacta en la productividad es la satisfacción laboral, por lo que el propósito de este estudio fue conocer qué tipo de relación existe entre la práctica de actividad física y la satisfacción laboral en Emergya, una consultoría informática. La muestra fueron 152 empleados que contestaron al cuestionario IPAQ para valorar su práctica de actividad física y una pregunta subjetiva sobre la satisfacción laboral. Los resultados mostraron que existen diferencias significativas, siendo los practicantes de actividad física vigorosa (M = 4,19), los practicantes de actividad física moderada (M = 4,15) y los practicantes de actividad física baja (M = 3,38). Por lo tanto los hallazgos concluyen que la práctica de actividad física, de manera vigorosa y moderada influye positivamente en la satisfacción laboral de los empleados.

Current and modern organizations are beginning to implement health management and promotion actions in order to improve their quality of life and the productivity of the company. One of the variables that impacts productivity is job satisfaction, so the purpose of this study was to know what kind of relationship exists between the practice of physical activity and job satisfaction in Emergya, a computer consultancy. The sample consisted of 152 employees who answered the IPAQ questionnaire to assess their physical activity practice and a subjective question about job satisfaction. The results showed that there are significant differences, being the practitioners of vigorous physical activity (M = 4,19), the practitioners of moderate physical activity (M = 4,15) and the practitioners of low physical activity (M = 3,38). Therefore, the findings conclude that the practice of physical activity, in a vigorous and moderate way, positively influences the job satisfaction of employees.
Una investigación sobre el efecto de mediación del estilo de afrontamiento sobre la relación entre la resiliencia psicológica y el estrés percibido en atletas con lesiones deportivas
Authors: Mohammadi F.
Published: April 2019

Este estudio tuvo como objetivo evaluar el efecto de los estilos de afrontamiento en la relación entre la resistencia psicológica y el estrés percibido en atletas lesionados. La población estadística incluyó a 800 jugadores de equipos deportivos de las ligas deportivas nacionales iraníes, entre los que se seleccionaron 300 atletas como muestra del studio, basándose en la tabla de Morgan por un método de muestreo de conveniencia intencional. Los instrumentos de estudio fueron 3 cuestionarios estándar. La prueba del coeficiente de Pearson y la regresión lineal se usaron para probar las hipótesis. Los resultados mostraron que las dimensiones del estilo de afrontamiento del estrés tenían un efecto significativo sobre el estrés percibido y la resiliencia psicológica. A pesar de los problemas mentales y físicos que el estrés provoca para las personas, parece que no están inactivos hacia el estrés. Para lidiar con el estrés y sus consecuencias desfavorables, los individuos a menudo adoptan algunos comportamientos que se originan a partir de sus estilos de afrontamiento. A partir de las características de la personalidad, los estilos de afrontamiento de aproximación y evitación pueden ayudar a los pacientes lesionados a tener una capacidad de recuperación psicológica.

This study was aimed at evaluating the effect of coping styles on the relationship between psychological resilience and perceived stress among injured athletes. The statistical population included 800 players of sports teams of the Iranian national sports leagues, among whom 300 athletes were chosen as the study sample based on Morgan’s table by a purposive convenience sampling method. The study instruments were 3 standard questionnaires. Pearson Coefficient test and linear regression were used to test the hypotheses. The results showed that the dimensions of stress coping style had a significant effect on perceived stress and psychological resilience. Despite the mental and physical problems stress brings about for individuals, it seems they are not inactive toward stress. To cope with stress and its unfavorable consequences, individuals often adopt some behaviors which originate from their coping styles. As personality characteristics, approach and avoidance coping styles can help injured patients have psychological resilience.
Perfil del usuario de centros deportivos privados, según género, edad y nivel de antigüedad
Authors: Molina García N. , Mundina Gómez J. J. , Gómez Tafalla A.
Published: April 2019

En los últimos años ha surgido una extrema necesidad de perfilar a los usuarios de instalaciones deportivas debido al crecimiento en el sector tratando de ser cada vez más competitivos adecuando la oferta a la demanda (Nuviala et al., 2014). El objetivo del presente estudio fue definir el perfil del usuario, en función de la calidad, satisfacción, valor percibido e intenciones futuras, analizando si éstas varían según el género, la edad y el nivel de antigüedad, en 481 socios de tres centros deportivos privados. Para ello, se les administró un cuestionario y se realizó una prueba t- para muestras independientes y un estudio de contraste grupo a grupo con la prueba t- del test de Scheffé y Tamhane. Los resultados indicaron que las variables estudiadas fueron más positivas para el participante de género femenino, de más de 40 años y con una antigüedad en el centro menor a un año.

In recent years, there has been an extreme need to profile the users of sports facilities due to the growth in the sector, trying to be more and more competitive by adapting supply to demand (Nuviala et al., 2014). The aim of this study was to define the user's profile, based on quality, satisfaction, perceived value and future intentions, analyzing whether these vary according to gender, age and seniority level, in 481 members of three private sports centers. For this purpose, a questionnaire was administered and a t-test was carried out for independent samples and a group-to-group contrast study with the t-test of Scheffé and Tamhane's test. The results indicated that the variables studied were more positive for the female participant, who was over 40 years old and had been in the center for less than a year.
Le gaspillage perçu des objets : une analyse par les théories de la distance psychologique et des niveaux de représentation
Authors: Guillard Valérie
Published: April 2019

L’objectif de cet article est de comprendre dans quelle mesure les individus perçoivent qu’ils gaspillent des objets en empruntant les théories de la distance psychologique et des niveaux de représentation. L’analyse de 21 entretiens réalisés à domicile montre que les distances spatiale, temporelle, hypothétique et sociale aux objets influencent la façon dont les individus se représentent leur utilité (abstraite/concrète) et perçoivent ou non leur gaspillage. Plus précisément, les résultats montrent que : 1) les distances spatiale, temporelle et hypothétique aux objets génèrent une représentation abstraite de leur utilité ce qui conduit à un faible gaspillage perçu ; 2) la distance sociale au futur bénéficiaire des objets conduit à une représentation abstraite de leur usage et à un fort gaspillage perçu. Les implications théoriques, managériales et sociétales de ces résultats sont discutées.
L’intérêt des techniques mobile-in-store : le rôle spécifique de l’orientation d’achat
Authors: Stroz Joanna , Benavent Christophe , de Pechpeyrou Pauline
Published: April 2019

L’enrichissement de l’expérience client est au cœur de la digitalisation des points de vente. Les techniques mobile-in-store , si elles délivrent des bénéfices utilitaires, hédoniques et symboliques, peuvent également être considérées comme intrusives, ce qui conduit à s’interroger sur l’intérêt que les consommateurs leur portent. Un questionnaire administré en ligne met en évidence, au-delà des effets constants des variables psychographiques, le rôle modérateur des orientations d’achat : une technique cohérente ( vs. incohérente) avec l’orientation du client augmente ( vs. réduit) l’intérêt qu’il lui porte. Ce résultat conduit à proposer des « bouquets » de techniques s’adaptant à chaque profil de client.
Quand « l’instruction à imaginer » fait évoluer la communication sur les vins
Authors: Bréhonnet Rémi , Lagier Joëlle
Published: April 2019

Cet article étudie l’impact des instructions à imaginer les attributs du terroir vinicole sur l’attitude envers la publicité et les marques sur les vins dans le cadre du nouvel amendement de la Loi Evin. L’accent est mis sur le rôle joué par la quantité, la vivacité ainsi que l’élaboration des images mentales dans ce type de communication. Une recherche quantitative est menée sur les vins de Bordeaux. Les résultats soulignent le fait que la présence « d’instructions à imaginer » induit une attitude envers la publicité et la marque plus favorable, comparé à une publicité ne contenant pas d’instructions. Cette approche nous permet d’ouvrir de nouvelles voies de recherche dans ce domaine non encore investigué, notamment en termes de savoir mieux-consommer.
Post-Humanitarianism
Authors: Duffield Mark
Published: April 2019

This paper provides a critical analysis of post-humanitarianism with reference to adaptive
design. At a time when precarity has become a global phenomenon, the design principle has
sidelined the need for, or even the possibility of, political change. Rather than working to
eliminate precarity, post-humanitarianism is implicated in its reproduction and governance.
Central here is a historic change in how the human condition is understood. The rational
Homo economicus of modernism has been replaced by progressive
neoliberalism’s cognitively challenged and necessarily ignorant Homo
inscius. Solidarity with the vulnerable has given way to conditional empathy. Rather
than structural outcomes to be protected against, not only are humanitarian crises now seen as
unavoidable, they have become positively developmental. Post-humanitarianism no longer provides
material assistance – its aim is to change the behaviour of the precariat in order to
optimise its social reproduction. Together with the construction of logistical mega-corridors,
this process is part of late-capitalism’s incorporation of the vast informal economies
of the global South. Building on progressive neoliberalism’s antipathy towards formal
structures and professional standards, through a combination of behavioural economics,
cognitive manipulation and smart technology, post-humanitarianism is actively involved in the
elimination of the very power to resist.
The Changing Faces of UNRWA
Authors: Fiddian-Qasmiyeh Elena
Published: April 2019

This article explores the UN Relief and Works Agency for Palestine Refugees’ (UNRWA)
responses to the US Government’s decision to dramatically cut its financial
contributions to the Agency in 2018. Acknowledging the complexities of the fast-moving changes
and dilemmas faced by UNRWA and Palestinian refugees, this article focuses specifically on the
events that unfolded in the first six months of 2018. Through a multiscalar analysis, I start
by situating UNRWA’s key responses as they have played out on the international stage
through a high-profile fundraising campaign (#DignityIsPriceless). I then develop a close
reading of three regional-level UNRWA circulars disseminated to UNRWA staff pertaining to the
provision of maternal and neonatal health services, and to Palestinian UNRWA staff
members’ employment and pension rights. Against the backdrop of the impact of
UNRWA’s responses across the region, I subsequently examine how these operational
changes have been experienced and conceptualised by Palestinians living in refugee camps in
Lebanon, noting that those experiences must be analysed within the broader context of
protracted displacement, enforced immobility and overlapping displacement.
Distinct mesoderm migration phenotypes in extra-embryonic and embryonic regions of the early mouse embryo
Authors: Saykali Bechara , Mathiah Navrita , Nahaboo Wallis , Racu Marie-Lucie , Hammou Latifa , Defrance Matthieu , Migeotte Isabelle
Published: April 2019

In mouse embryo gastrulation, epiblast cells delaminate at the primitive streak to form mesoderm and definitive endoderm, through an epithelial-mesenchymal transition. Mosaic expression of a membrane reporter in nascent mesoderm enabled recording cell shape and trajectory through live imaging. Upon leaving the streak, cells changed shape and extended protrusions of distinct size and abundance depending on the neighboring germ layer, as well as the region of the embryo. Embryonic trajectories were meandrous but directional, while extra-embryonic mesoderm cells showed little net displacement. Embryonic and extra-embryonic mesoderm transcriptomes highlighted distinct guidance, cytoskeleton, adhesion, and extracellular matrix signatures. Specifically, intermediate filaments were highly expressed in extra-embryonic mesoderm, while live imaging for F-actin showed abundance of actin filaments in embryonic mesoderm only. Accordingly, Rhoa or Rac1 conditional deletion in mesoderm inhibited embryonic, but not extra-embryonic mesoderm migration. Overall, this indicates separate cytoskeleton regulation coordinating the morphology and migration of mesoderm subpopulations.
A bacterial riboswitch class for the thiamin precursor HMP-PP employs a terminator-embedded aptamer
Authors: Atilho Ruben M , Mirihana Arachchilage Gayan , Greenlee Etienne B , Knecht Kirsten M , Breaker Ronald R
Published: April 2019

We recently implemented a bioinformatics pipeline that can uncover novel, but rare, riboswitch candidates as well as other noncoding RNA structures in bacteria. A prominent candidate revealed by our initial search efforts was called the ‘thiS motif’ because of its frequent association with a gene coding for the ThiS protein, which delivers sulfur to form the thiazole moiety of the thiamin precursor HET-P. In the current report, we describe biochemical and genetic data demonstrating that thiS motif RNAs function as sensors of the thiamin precursor HMP-PP, which is fused with HET-P ultimately to form the final active coenzyme thiamin pyrophosphate (TPP). HMP-PP riboswitches exhibit a distinctive architecture wherein an unusually small ligand-sensing aptamer is almost entirely embedded within an otherwise classic intrinsic transcription terminator stem. This arrangement yields remarkably compact genetic switches that bacteria use to tune the levels of thiamin precursors during the biosynthesis of this universally distributed coenzyme.
Immunology and individuality
Authors: Pradeu Thomas
Published: April 2019

Immunology and philosophy have a rich history of dialogue. Immunologists have long been influenced by ideas from philosophy, notably the concept of 'self', and many philosophers have explored the conceptual, theoretical and methodological foundations of immunology. Here, I discuss two aspects of this dialogue: biological individuality and immunogenicity.
Diet and mitochondrial DNA haplotype of a sperm whale (Physeter macrocephalus) found dead off Jurong Island, Singapore
Authors: Chua Marcus A.H. , Lane David J.W. , Ooi Seng Keat , Tay Serene H.X. , Kubodera Tsunemi
Published: April 2019

Despite numerous studies across the large geographic range of the sperm whale (Physeter macrocephalus), little is known about the diet and mitochondrial DNA haplotypes of this strongly female philopatric species in waters off Southeast Asia. A female sperm whale found dead in Singapore waters provided the opportunity to study her diet and mitochondrial DNA haplotype. Here we report on the identification of stomach contents and mitochondrial DNA haplotype of this individual, and we include coastal hydrodynamic modelling to determine the possible geographic origin of the whale. At least 28 species of prey were eaten by this adult female whale, most of which were cephalopods. The mesopelagic squidsTaonius pavo, Histioteuthis pacifica, Chiroteuthis imperator,andAncistrocheirus lesueuriimade up over 65% of the whale’s stomach contents. Plastic debris was also found in the whale’s stomach. Based on the diet, genetics, and coastal hydrodynamic modelling that suggest an easterly drift of the whale carcass over several days, the dead sperm whale in Singapore probably originated from a pod in the Southern Indian Ocean. This study provides an increase in the understanding the diet and natural history of the sperm whale in Southeast Asia. The combined analyses of stomach contents, DNA, and hydrodynamic modeling could provide a context to future studies on the sperm whale strandings, and have broader applicability for other marine mammals in the region.
A new record of the Dwarf Sea Krait (Laticauda frontalis) from the Loyalty Islands, New Caledonia
Authors: Shine Richard , Shine Terri , Goiran Claire
Published: April 2019

Common in Vanuatu, the Dwarf Sea Krait Laticauda frontalis also is known from five old records (in the 1880s and 1890s) from the Loyalty Islands, between Vanuatu and the main island of New Caledonia. Those records have been interpreted by some authorities as errors, or as reflecting occasional waifs rather than breeding populations. We now report an additional specimen of L. frontalis from the Loyalty Islands island of Maré, and we review distributional data for this species and for the closely allied L. saintgironsi. Sympatry on the western coast of Maré confirms that these two taxa warrant separate species status despite their minimal genetic divergence.
High-velocity, low-amplitude spinal manipulation training of prescribed forces and thrust duration: A pilot study
Authors: Shannon Zacariah K. , Vining Robert D. , Gudavalli Maruti Ram , Boesch Ron J.
Published: April 2019

Objective

High-velocity, low-amplitude spinal manipulation (HVLA-SM) may generate different therapeutic effects depending on force and duration characteristics. Variability among clinicians suggests training to target specific thrust duration and force levels is necessary to standardize dosing. This pilot study assessed an HVLA-SM training program using prescribed force and thrust characteristics.

Methods

Over 4 weeks, chiropractors and students at a chiropractic college delivered thoracic region HVLA-SM to a prone mannequin in six training sessions, each 30 minutes in duration. Force plates embedded in a treatment table were used to measure force over time. Training goals were 350 and 550 Newtons (N) for peak force and ≤150 ms for thrust duration. Verbal and visual feedback was provided after each training thrust. Assessments included 10 consecutive thrusts for each force target without feedback. Mixed-model regression was used to analyze assessments measured before, immediately following, and 1, 4, and 8 weeks after training.

Results

Error from peak force target, expressed as adjusted mean constant error (standard deviation), went from 107 N (127) at baseline, to 0.2 N (41) immediately after training, and 32 N (53) 8 weeks after training for the 350 N target, and 63 N (148), −6 N (58), and 9 N (87) for the 550 N target. Student median values met thrust duration target, but doctors' were >150 ms immediately after training.

Conclusion

After participation in an HVLA-SM training program, participants more accurately delivered two prescribed peak forces, but accuracy decreased 1 week afterwards. Future HVLA-SM training research should include follow-up of 1 week or more to assess skill retention.
Chemical Speciation and Fractionation Study of Heavy Metals in Top Sediment Deposit of Owena River, Nigeria
Authors: Rasheed Kolawole , Solomon Akinnawo , Aiyesanmi Ademola
Published: April 2019

This study investigates the chemical speciation and fractionation of heavy metals (Cd, Cr, Cu, Ni and Pb) in relation to their levels of pollution from six different locations along the course of Owena River during the dry and wet season of 2015. The top sediment deposit was subjected to sequential extraction and the heavy metals were identified and quantified using atomic absorption spectrophotometer. The concentration of the analyzed heavy metals in the top sediment deposit were found to occur below the maximum permissible limit of the Dutch reference standard for soil/sediment, thereby the sediment collected from Owena river is not contaminated with the analyzed heavy metals. The overall results of this research suggest that the mobility and bioavailability of heavy metals in sediment collected from Owena River decreases in the following order:  Cu > Pb > Cr > Cd > Ni.
Vertebral artery dissection associated with familial Mediterranean fever and Behçet's disease
Authors: Ishikawa Hidehiro , Shindo Akihiro , Ii Yuichiro , Sakano Shoko , Asahi Masaru , Matsuura Keita , Kishida Dai , Umino Maki , Maeda Masayuki , Tomimoto Hidekazu
Published: April 2019

Vertebral artery dissection and recurrent meningitis are rare complications in Behçet's disease. Behçet's disease may be associated with familial Mediterranean fever. Here, we describe a 52‐year‐old woman with severe headache who exhibited recurrent meningitis and vertebral artery dissection. Cerebrospinal fluid showed high levels of interleukin‐6. Magnetic resonance imaging revealed right vertebral artery dissection. The patient had three heterozygous mutations in the familial Mediterranean fever gene (MEFV) gene. She fulfilled criteria for diagnosis of Behçet's disease and familial Mediterranean fever. In conclusion, mutations of the MEFV gene may cause neuro‐inflammatory disorders and cerebrovascular disorders by reducing anti‐inflammatory activity of pyrin.