bluuebunny/crossref_metadata_2025 huggingface dataset:
Delimitation of the series Laurifoliae in the genus Passiflora (Passifloraceae)
Authors: ROME MAXIME , COPPENS D’EECKENBRUGGE GEO
Published: June 2017

Within the huge diversity of genus Passiflora, series Laurifoliae constitutes a strikingly uniform group, widely distributed in neotropical rain forests, at low to moderate elevations. Given its morphological and ecological unity, Killip mentionned it as an «exceedingly difficult» group. The lack of clear morphological criteria has not helped in delimiting it, and the confusion has grown with the addition of new species and criteria. As a preliminary step in the study of diversity within series Laurifoliae, we re-examine its morphological delimitation, assessing how its current 29 species (including the highly similar P. pachyantha and P. killipiana) conform to 20 criteria from different authors. Three criteria (indumentum on vegetative parts, stipule glands, membranous limen) appear to be irrelevant, because they are either too variable or rarely recorded in the species descriptions. Using the 17 remaining ones, 24 typical species show very limited variations, five of them differing by only one criterion. Among them, we retain terete to angular stem, setaceous or linear stipules soon deciduous, petiolar glands in one pair, leaves oblong, neither peltate nor lobate, three glandular bract over 1 cm long and free, flowers pendent, with two campanulate outer series of filaments (most other series much reduced or aborted). Five species, P. guazumaefolia, P. kikiana, P. odontophylla, P. ischnoclada, and P. maliformis, differ by three to nine traits, not found in the typical representatives of the series, so they can be excluded from it. Passiflora kikiana should be classified into series Kermesinae. For the four other ones, a satisfactory solution implies a more global study, involving other series.
Synopsis of Potamogetonaceae in Iran with supplements to the Flora Iranica and a new identification key
Authors: ABBASI SHABNAM , AFSHARZADEH SAEED , DINARVAND MEHRI , WIEGLEB GERHARD
Published: June 2017

Potamogetonaceae comprises three closely related genera: Potamogeton, Stuckenia and Groenlandia. The last comprehensive research on this species group in Iran dates back to 1971 (Flora Iranica). In this research we present an identification key to the Potamogetonaceae species in Iran with descriptions of all taxa based on morphological and anatomical studies. 11 species of Potamogeton, three species of Stuckenia and one of Groenlandia are described from Iran. Moreover, a new hybrid (P. pusillus × P. crispus) is described as a new to science. Distribution is outlined for all taxa. The genus Potamogeton and related genera have a wide distribution in different aquatic ecosystems in particular of northern, central and southwestern Iran. The species formerly recorded as P. alpinus was identified as P. schweinfurthii. It is recorded for the flora of Iran for the first time.
Two new endemic species of Caraipa (Calophyllaceae) from the Central Amazon Basin, Amazonas State, Brazil
Authors: CABRAL FERNANDA NUNES , BITTRICH VOLKER , AMARAL MARIA DO CARMO ESTANISLAU DO
Published: June 2017

Two new species of Caraipa (Calophyllaceae) are described and illustrated: Caraipa glabra and C. iracemensis. Both species are known only from the municipality of Presidente Figueiredo, Amazonas state, Brazil. They both occur on patches of white-sand vegetation and they are locally abundant. Caraipa glabra is a small tree and can be distinguished from other Caraipa species by the complete absence of hairs on the leaf lamina, pedicel and fruits. Caraipa iracemensis is morphologically similar to C. grandifolia and C. caespitosa, and can be distinguished by its habit, leaves and petiole size, as well as fruit surface and size.
Dendrobium tuensangense, a new species of Orchidaceae from Nagaland, Northeast India
Authors: ODYUO NRIPEMO , DEORI CHAYA , DAIMARY RANJIT
Published: June 2017

Dendrobium tuensangense N. Odyuo & C. Deori (Orchidaceae), a new species from Tuensang district of Nagaland, Northeast India is described and illustrated. The new species is similar to D. dantaniense Guillaumin but differs in having uniformly elongate, slender stems, floral bracts ovate to elliptic acuminate, obtuse, shorter than the ovary and pedicel; sepals and petals pale cream coloured; side lobes papillose on dorsal and ventral side, papillae purplish, fan shaped, very broad, apex obtuse, margin erose; midlobe apex narrower, 1 mm broad; anther head with an acute projection of 0.5 mm long. It is also similar to Dendrobium bicameratum Lindl. but differs in having uniformly elongate, slender stems, an acute projection of 0.5 mm long on the anther head, sepals and petals pale cream coloured; side lobes papillose on dorsal and ventral side, papillae purplish, fan shaped, very broad, obtuse, margin erose.
A new species and new record of the genus Nannastacus (Crustacea: Cumacea: Nannastacidae) from Korea
Authors: LEE CHANG-MOK , KIM SUNG-HYUN , KIM YOUNG-HYO
Published: June 2017

The new species, Nannastacus leeae sp. nov. and the newly recorded species, Nannastacus spinulosus Gamô, 1962 are described and illustrated. This new species resembles Nannastacus inconstans Hale, 1945, N. nyctagineus Gamô, 1962, and N. pectinatus Gamô, 1962 in having numerous minute granules on pereon and pleon. However, the new species is distinguished from its congeners by having several rows of large spatulate tubercles on carapace. The specimens of Nannastacus spinulosus herein studied coincided well with the descriptions given by Gamô, 1962. A key to the Korean species of Nannastacus is provided.
Observations of Increased Cloud Cover over Irrigated Agriculture in an Arid Environment
Authors: Garcia-Carreras Luis , Marsham John H. , Spracklen Dominick V.
Published: June 2017

Irrigated agriculture accounts for 20% of global cropland area and may alter climate locally and globally, but feedbacks on clouds and rainfall remain highly uncertain, particularly in arid regions. Nonrenewable groundwater in arid regions accounts for 20% of global irrigation water demand, and quantifying these feedbacks is crucial for the prediction of long-term water use in a changing climate. Here, satellite data are used to show how irrigated crops in an arid environment alter land surface properties, cloud cover, and rainfall patterns. Land surface temperatures (LSTs) over the cropland are 5–7 K lower than their surroundings, despite a lower albedo, suggesting that Bowen ratio is strongly reduced (and latent heat fluxes increased) over the irrigated cropland. Daytime cloud cover is increased by up to 15% points (a relative increase of 60%), with increased cloud development in the morning and a greater afternoon peak in cloud. Cloud cover is significantly correlated with interannual variations in vegetation and LST. Afternoon rainfall also appears to be enhanced around the irrigation. The cloud feedback is the opposite of what has been previously observed in tropical and semiarid regions, suggesting different processes drive land–atmosphere feedbacks in very dry environments. Increased cloud and rainfall, and associated increases in diffuse radiation and reductions in temperature, are likely to benefit vegetation growth. Predictions of changes in crop productivity due to climate change and the impacts of global land-use change on climate and the use of water resources would therefore benefit from including these effects.
Surgical Complications from Superior Canal Dehiscence Syndrome Repair: Two Decades of Experience
Authors: Xie Yanjun , Sharon Jeffrey D. , Pross Seth E. , Abt Nicholas B. , Varma Sanskriti , Della Santina Charley C. , Minor Lloyd B. , Carey John P.
Published: June 2017

Objective

To determine the incidence of surgical complications associated with superior canal dehiscence syndrome (SCDS) repair and identify the demographic, medical, and intraoperative risk factors that are associated with SCDS complications.

Study Design

Cases series with chart review, including patients who underwent SCDS repair between 1996 and 2015.

Setting

A tertiary care academic medical center.

Subjects and Methods

Data were collected from 220 patients, including demographic information, medical comorbidities, prior otologic surgical history, surgical approach, intraoperative findings, and postoperative complications. Relative risk analysis and multivariable logistic regression evaluated the associations between perioperative risk factors and SCDS complications.

Results

A total of 242 consecutive cases were performed: 95.5% middle fossa and 4.5% transmastoid approach (mean age: 47.8 ± 10.6 years; 54.5% female). Surgical complications were reported in 27 (11.2%) cases; 20 (8.3%) had Clavien‐Dindo grade I complications, most commonly benign paroxysmal positional vertigo (n = 11, 4.5%) and profound sensorineural hearing loss (n = 6, 2.5%). Two cases (0.8%) had grade II; 4 cases (1.7%), grade III; and 1 case (0.4%), grade IV complications. In the analysis of comorbidities, only preoperative coagulopathy was significantly associated with increased risk of complications (relative risk = 6.4, P <. 01). Following multivariate logistic regression adjusting for demographic covariates, coagulopathy was still associated with increased odds of complications (odds ratio = 15.7, P =. 03). There were no significant associations between other risk factors and complications.

Conclusion

SCDS repair has low rates of adverse events. We observed an incidence of 11.2% complications, most commonly postoperative benign paroxysmal positional vertigo. The risk of nonotologic intracranial complications (1.7%) is low.
McGill Thyroid Nodule Score in Differentiating Benign and Malignant Pediatric Thyroid Nodules: A Pilot Study
Authors: Canfarotta Michael , Moote Douglas , Finck Christine , Riba‐Wolman Rebecca , Thaker Shefali , Lerer Trudy J. , Payne Richard J. , Cote Valerie
Published: June 2017

Objective

The McGill Thyroid Nodule Score (MTNS) is a preoperative tool used to predict the risk for well‐differentiated thyroid cancer given a specific nodule in adults. We evaluated the clinical utility of a modified pediatric MTNS with children and adolescents.

Study Design

Case series with chart review.

Setting

Tertiary care children’s hospital.

Subjects and Methods

This is a retrospective chart review of 46 patients ≤18 years of age presenting with a solitary or dominant thyroid nodule treated with surgical resection between September 2008 and December 2015. The cumulative MTNS for each nodule was calculated and compared with the final pathology.

Results

Of 46 patients, 10 (21.7%) were diagnosed with well‐differentiated thyroid cancer (80% papillary thyroid carcinoma, 10% follicular variant of papillary thyroid carcinoma, 10% follicular thyroid carcinoma). Malignant nodules were associated with a greater mean MTNS (benign, 5.72 ± 3.03; malignant, 16 ± 3.13; P <. 05). The sensitivity, specificity, and positive predictive value of malignancy were 100%, 94.4%, and 83.3% for scores ≥10 and 80%, 100%, and 100% for scores ≥11, respectively. In nodules with indeterminate cytology (Bethesda III and IV), the pediatric MTNS showed good differentiation between benign and malignant disease, with mean scores of 7.95 and 12.5, respectively (P =. 006).

Conclusion

This pilot study suggests that a comprehensive scoring system may help assess the risk of malignancy in pediatric thyroid nodules and differentiate nodules with indeterminate cytology into higher‐ and lower‐risk categories. Given these findings, larger, multi‐institutional studies are warranted.
Attrition from Male-dominated Occupations
Authors: Torre Margarita
Published: June 2017

Women in male-dominated occupations remain at a considerable risk of attrition. This study examines both the consequences of being an occupational minority and the effect of occupational attributes on women’s exit from male-dominated occupations. Drawing on prior theories and empirical studies, I argue that women in high-status occupations are better prepared than women in low-status occupations to overcome obstacles derived from their minority status. Using the Current Population Survey data set and the Occupational Information Network database, this study reveals that a greater proportion of males in an occupation increases the probability of exit from low-status occupations, once we account for relevant individual and occupational attributes. Conversely, women employed in high-status occupations are less likely to leave strongly male-dominated occupations. These findings underscore that women’s attrition from male-dominated occupations cannot be adequately explained without considering differences among women at the moment of hiring.
Of activists and gatekeepers: Temporal and structural properties of policy networks on Twitter
Authors: Stier Sebastian , Schünemann Wolf J , Steiger Stefan
Published: June 2017

There is an ongoing academic debate whether social media empowers activists and advocacy groups in relation to established political actors and media gatekeepers. This article investigates these premises by analysing the influence of various actors in two policy debates on Twitter, environmental policy (climate change) and Internet governance (net neutrality). We extract tweets on both topics and code the respective 500 most central accounts according to a categorisation of relevant political actor groups. Applying methods from social network analysis, we reveal temporally fluctuating actor constellations and network structures which converge to elite actors during high attention periods. Furthermore, a comparative keyword analysis shows that non-governmental organisations and citizen media emphasise personalised connective action frames, whereas political actors and traditional media tend to refer to the political decision-making process and its institutions. Both findings are in line with cyclical conceptions of policy processes.
Projections as visual aids for classification system design
Authors: Rauber Paulo E , Falcão Alexandre X , Telea Alexandru C
Published: June 2017

Dimensionality reduction is a compelling alternative for high-dimensional data visualization. This method provides insight into high-dimensional feature spaces by mapping relationships between observations (high-dimensional vectors) to low (two or three) dimensional spaces. These low-dimensional representations support tasks such as outlier and group detection based on direct visualization. Supervised learning, a subfield of machine learning, is also concerned with observations. A key task in supervised learning consists of assigning class labels to observations based on generalization from previous experience. Effective development of such classification systems depends on many choices, including features descriptors, learning algorithms, and hyperparameters. These choices are not trivial, and there is no simple recipe to improve classification systems that perform poorly. In this context, we first propose the use of visual representations based on dimensionality reduction (projections) for predictive feedback on classification efficacy. Second, we propose a projection-based visual analytics methodology, and supportive tooling, that can be used to improve classification systems through feature selection. We evaluate our proposal through experiments involving four datasets and three representative learning algorithms.
Polymorphisms in PPARG and APOE: relationships with lipid profile of adolescents with cardiovascular risk factors
Authors: Alves Maira Chiquito , de Morais Carla Cristina , Augusto Elaine Moura , Abdalla Dulcineia Saes Parra , Horst Maria Aderuza , Cominetti Cristiane
Published: June 2017

Background

Cardiovascular diseases constitute the main death cause worldwide resulting from a combination of genetic and lifestyle factors, and the prevalence among younger individuals has increased. It is important to early identify changes in lipid profile and the influence of genetic variations in specific genes on the individual patterns of lipid profile. Thus, the aim of this study was to verify the relationship of polymorphisms in PPAR-gamma gene (PPARG− rs1801282 − Pro12Ala) and in apolipoprotein E gene (APOE −rs429358 + rs7412, determinants of the APOE2, APOE3, or APOE4 genotypes) with lipid profile of adolescents under cardiovascular risk factors.

Methods

This was a cross-sectional study with 115 adolescents aged 10–19 years, which presented cardiovascular risk factors. The students were evaluated regarding socioeconomic, anthropometric, biochemical, genetic, and dietetic variables. Student’sttest or Mann-Whitney test were applied to the analysis of the genotypes. Multiple linear regression analysis was performed to determine the variables that most influenced the lipid profile.

Results

Adolescents carryingPPARGAla allele showed higher serum triglycerides (p = 0.0423) and very low-density lipoprotein (p = 0.0410) levels when compared to those carrying the wild genotype. For theAPOEpolymorphism, it was observed a trend of higher triglycerides (p = 0.0712) and very low-density lipoprotein (p = 0.0758) levels in the adolescents carrying the E4 allele when compared to those who did not carry this allele.

Conclusion

The polymorphismsPPARGrs1801282 andAPOErs429358 + rs7412 seem to be related to the development of lipid profile alterations in adolescents.
Characterizing carbonate facies using high-definition frequency decomposition: Case study from North West Australia
Authors: Al-Maghlouth Mohammed , Szafian Peter , Bell Rebecca
Published: June 2017

Carbonate facies identification is difficult using conventional seismic attributes due to subtle lithologic changes that cannot be easily recognized. Therefore, there is a need to develop new methodologies to study their evolution and their associated sedimentary processes, which will eventually lead to better prediction for reservoir-quality rocks. New insights into the Cenozoic carbonates in North West Australia have been captured with the application of a high-definition seismic attribute workflow. The workflow starts with conditioning of the seismic volume using structurally oriented noise attenuation filters to remove any random and coherent noise from the input data. It also benefits from a high-definition frequency decomposition that matches the original seismic resolution without smearing interfaces using a “matching pursuit” algorithm. A color blend of multigeometric attributes, such as semblance and conformance, has also been used in the workflow to define edges and discontinuities present in the data within carbonate deposits that are attributed to depositional geometries, such as barrier reefs. Our workflow has been developed to investigate the geomorphology and the sedimentary processes affecting Cenozoic successions in the Northern Carnarvon Basin in North West Australia. Geomorphological and sedimentological observations have been documented such as an Eocene rounded carbonate ramp with evidence of slump blocks and scarps, Middle Miocene accretions generated due to longshore drift, and the presence of Pliocene-Pleistocene patch and barrier reefs. These observations were extracted as geobodies to allow for visualization, and they can be used in an automated seismically based facies classification scheme. The new appreciations are not only useful for understanding the carbonate evolution but can also be used to identify geohazards such as slumps ahead of future drilling.
Effects of Deep Basins on Structural Collapse during Large Subduction Earthquakes
Authors: Marafi Nasser A. , Eberhard Marc O. , Berman Jeffrey W. , Wirth Erin A. , Frankel Arthur D.
Published: June 2017

Deep sedimentary basins are known to increase the intensity of ground motions, but this effect is implicitly considered in seismic hazard maps used in U.S. building codes. The basin amplification of ground motions from subduction earthquakes is particularly important in the Pacific Northwest, where the hazard at long periods is dominated by such earthquakes. This paper evaluates the effects of basins on spectral accelerations, ground-motion duration, spectral shape, and structural collapse using subduction earthquake recordings from basins in Japan that have similar depths as the Puget Lowland basin. For three of the Japanese basins and the Puget Lowland basin, the spectral accelerations were amplified by a factor of 2 to 4 for periods above 2.0 s. The long-duration subduction earthquakes and the effects of basins on spectral shape combined, lower the spectral accelerations at collapse for a set of building archetypes relative to other ground motions. For the hypothetical case in which these motions represent the entire hazard, the archetypes would need to increase up to 3.3 times its strength to compensate for these effects.
Heike Paintings in the Early Edo Period
Authors: Gunji Naoko
Published: June 2017

The Heike monogatari (Tale of the Heike) is a warrior chronicle represented in a variety of formats: not just texts but narration, performing arts, and paintings, among others. This paper explores the elite reception of Heike paintings in the Edo period by connecting it closely to the reception of other formats. Studying the “Chishakuin group”—a canonical group of paintings for elites depicting two battles in the Heike monogatari—and analyzing in particular the pair of screens in the British Museum, I will bring to light some intended functions of a social, political, and ideological nature that the Edo warrior elite expected of these paintings: most centrally, to edify the audience and legitimize the Tokugawa rule. As will be shown, these functions relied closely on the similar ones expected of other formats of the Heike monogatari. In fact, I will argue that Heike paintings, as well as the tale itself, were targeted to and received by elite women, not just men. I will investigate an interesting case of appreciation of Heike picture scrolls in 1632 by Tōfukumon'in, a daughter of the second Tokugawa shogun Hidetada and the imperial consort of Emperor Go-Mizunoo. It will be made clear that political and ideological reasons stemming from her particular background and circumstances were behind Tōfukumon'in's practice of reading the Heike paintings.
More Than Mere Diversion
Authors: Lee De-Nin D.
Published: June 2017

Whereas texts on painting by Chinese literati have had a profound impact on art history, women's writings are almost unknown. This article examines poems by the Qing-dynasty poet-painter Luo Qilan (b. 1755), using her as a case study to argue for a literatae tradition in painting. Luo's tihuashi (poems on paintings) and related poems bear witness to vigorous participation in the culture of Chinese painting. Her poems evidence learning from male teachers and female exemplars, adaptation of masculine conventions, and adroit use of poetic and painterly skills to cultivate supporters who disseminated her reputation beyond the Inner Chambers.
Chaotic dynamics of electroencefalogramm
Authors: Мирошниченко  , Miroshnichenko Inna , Майстренко  , Maystrenko V. , Клюс  , Klyus L. , Булатов  , Bulatov I.
Published: June 2017

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Surgical treatment of epilepsy and its results
Authors: Маматханов  , Mamathanov M. , Касумов  , Kasumov V. , Куралбаев  , Kuralbaev A. , Гохман  , Gohman E. , Кравцова  , Kravcova S.
Published: June 2017

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APPROACHES TO THE STUDY OF ORGANIZATIONAL AND METHODOLOGICAL ASPECTS OF MANAGEMENT PERSONNEL CERTIFICATION
Authors: Медведев  , Medvedev A.
Published: June 2017

In this article, approaches to the study of the organizational and methodical aspects of certification of management personnel, the need for its use are considered. The importance for each enterprise and organization of the application of each of their methods and approaches is considered. The tasks of certification of management personnel are presented in detail, a number of difficulties are shown, which arise when using different methods of personnel assessment. The Technical Committee, which deals with the standardization of quality management systems, found that when using the standards from the 9000 series, there are already obvious shortcomings in them. The reasons that do not allow full use of the standards are considered. The advantages that an enterprise or organization receives are obtained by showing qualified personnel who have passed the certification provided that the certification is carried out by competent employees. Brief conclusions and ways of solving the problems described in this article are given.
Innovation technological processes with ultrasound use
Authors: Приходько Вячеслав , Prikhodko Vyachyeslav , Нигметзянов Равиль , Nigmetzyanov Ravil , Сундуков Сергей , Sundukov Sergey , Фатюхин Дмитрий , Fatyukhin Dmitriy
Published: June 2017

Basic directions in the application of ultrasonic technologies in mechanical engineering are considered. The results of investigations on the ultrasonic machining impact upon properties of various media are shown. The ways of technological process control with the use of ultrasound are offered.
Design-technological support of quality and competitive ability of engineering products
Authors: Суслов Анатолий , Suslov Anatoliy
Published: June 2017

The solution of the problem of the assurance of competitive ability and quality of engineering products during their design and manufacturing is stated. The dependence for the definition of a complex factor of engineering product competitive ability is shown. The concept of life optimum is given. The structural procedures for the solution of problems of a designer and technologist for the assurance of engineering product quality are shown.
Economics of Education
Authors: Василенко  , Vasilenko Natalia , Вахитова  , Vahitova Lidiya , Дружинина  , Druzhinina Svetlana , Кольцова  , Kol'cova Anna , Линьков  , Linkov Aleksey , Рубцова  , Rubcova Ol'ga , Смирнова  , Smirnova Ol'ga , Соловейкина  , Soloveykina Mariya , Тихонова  , Tihonova Anastasiya , Тропинова  , Tropinova Elena , Яковлева  , Yakovleva Tamara
Published: June 2017

The workshop is a supplement to the textbook by N.V. Vasilenko and A.Ya. Linkov and provides methodological support for the formation of multi-level competencies in the organization, financing and evaluation of the effectiveness of educational activities.
The workshop is intended for undergraduate and graduate students studying in the areas of "Pedagogical Education", "Economics", "Management" and "State and Municipal Administration", which provides training for specialists in educational organizations and educational authorities.
Favorabilidad en el derecho procesal del trabajo: aplicación estricta o ilimitada
Authors: Meza Yances Lays Alejandra
Published: June 2017

En el presente artículo se analiza el principio de favorabilidad, pilar del derecho laboral y procesal del trabajo. El artículo fue llevado a cabo a través del método deductivo, es de tipo descriptivo, documental, observacional y no experimental, partiendo de un análisis comparativo que desarrolla ampliamente la temática tratada. Como resultado se identifican posiciones a favor, dando muestra de ser una tendencia de la autonomía del derecho laboral en cuanto a valoración de las pruebas y del nivel de protección que de ella se genera para con el trabajador. Llegando a la conclusión que, si bien es cierto que la favorabilidad es la esencia del derecho laboral debe tenerse presente que en todo proceso litigioso debe primar la igualdad y la seguridad jurídica por encima de un derecho considerado como desequilibrado.
Los tratados bilaterales de protección de inversiones y su sometimiento a los derechos humanos y un breve excursus para el caso colombiano
Authors: Solórzano Quintero Juan Felipe
Published: June 2017

Este escrito pretende mostrar de forma introductoria la obligación existente en materia de derecho internacional de inversiones de garantizar los derechos de la persona. Debemos reconocer que el Estado no es el único actor, aquel se ha visto transformado y hoy en día muchas de sus funciones y atributos fueron cedidos a favor de organizaciones internacionales, que en principio permiten hacer frente a las posibles vulneraciones de derechos de la persona. No obstante, en materia del derecho internacional de inversiones, se requiere un reforzamiento de estas garantías. En este sentido, pretendemos hacer notar algunos problemas que existen en lo referente a los tratados bilaterales de protección de inversiones y que requieren una transformación para estar acorde con la protección del individuo.
Competition-Based Dynamic Pricing in Online Retailing: A Methodology Validated with Field Experiments
Authors: Fisher Marshall , Gallino Santiago , Li Jun
Published: June 2017

A retailer following a competition-based dynamic-pricing strategy tracks competitors’ price changes and then must answer the following questions: (i) Should we respond? (ii) If so, to whom? (iii) How much of a response? (iv) And on which products? The answers require unbiased measures of price elasticity as well as accurate estimates of competitor significance and the extent to which consumers compare prices across retailers. There are two key challenges to quantify these factors empirically: first, the endogeneity associated with almost any type of observational data, where prices are correlated with demand shocks observable to pricing managers but not to researchers, and second, the absence of competitor sales information, which prevents efficient estimation of a full consumer-choice model. We address the first issue by conducting a field experiment with randomized prices. We resolve the second issue by exploiting the retailer’s own and competitors’ stockouts as a source of variation to the consumer choice set, in addition to variations in competitors’ prices. We estimate an empirical model capturing consumer choices among substitutable products from multiple retailers. Based on the estimates, we propose and test a best-response pricing strategy through a carefully controlled live experiment that lasts five weeks. The experiment documents an 11% revenue increase while maintaining a margin above a retailer-specified target.

The e-companion is available at https://doi.org/10.1287/mnsc.2017.2753 .

This paper was accepted by Gad Allon, operations management.
Return to Invested Capital and the Performance of Mergers and Acquisitions
Authors: Qian Jun “QJ” , Zhu Julie Lei
Published: June 2017

We evaluate the efficiency of capital deployment for acquiring firms before mergers and acquisitions (M&As), defined as the return on invested capital net of the cost of capital, and link this measure to firms’ postacquisition performance. Acquirers with higher preacquisition net returns on investment have superior long-run operating and stock performance than do acquirers with lower returns. Acquirers with low net returns on investment also underperform matching nonacquirers. The relationship between preacquisition investment return and postacquisition performance is weakened when chief executive officer turnover occurs after deal completion. These results imply that managerial ability in deploying capital and creating value for shareholders persists through M&As.

The online appendix is available at https://doi.org/10.1287/mnsc.2017.2766 .

This paper was accepted by Wei Jiang, finance.
Serial Inventory Systems with Markov-Modulated Demand: Derivative Bounds, Asymptotic Analysis, and Insights
Authors: Chen Li , Song Jing-Sheng , Zhang Yue
Published: June 2017

We study inventory control of serial supply chains with continuous, Markov-modulated demand (MMD). Our goal is to simplify the computational complexity by resorting to certain approximation techniques, and, in doing so, to gain a deeper understanding of the problem. First, we perform a derivative analysis of the problem’s optimality equations and develop general, analytical solution bounds for the optimal policy. This leads to simple-to-compute near-optimal heuristic solutions, which also reveal an intuitive relationship with the primitive model parameters. Second, we establish an MMD central limit theorem under long replenishment lead time through asymptotic analysis. We show that the relative errors between our heuristic and the optimal solutions converge to zero as the lead time becomes sufficiently long, with the rate of convergence being the square root of the lead time. Third, we show that, by leveraging the Laplace transform, the computational complexity of our heuristic is superior to the existing methods. Finally, we provide the first set of numerical study for serial systems under MMD. The numerical results demonstrate that our heuristic achieves near-optimal performance even under short lead times and outperforms alternative heuristics in the literature. In addition, we observe that, in an optimally run supply chain under MMD, the internal fill rate can be high and the demand variability propagating upstream can be dampened, both different from the system behaviors under stationary demand.

The online appendix is available at https://doi.org/10.1287/opre.2017.1615 .
Retos del turismo español ante el cambio climático
Authors: Gómez Martín M. Belén
Published: June 2017

Este artículo realiza una reflexión sobre los principales retos de futuro que el cambio climático plantea al sector turístico español. La notable repercusión que los efectos climáticos directos tienen y tendrán sobre los destinos evidencia la necesidad de contar con adecuadas evaluaciones de potencialidad del recurso, bien para adaptar la actividad a los nuevos calendarios, bien para crear nuevos productos turísticos que permitan aprovechar las nuevas aptitudes del clima. Por otro lado, los efectos indirectos del cambio medioambiental exigen, y seguirán exigiendo en el futuro, esfuerzos en materia de gestión y planificación territorial y turística en los destinos ya que, en numerosas ocasiones, estos efectos presentarán un signo contrario a los efectos climáticos directos. Por último, la necesidad de combatir el cambio climático desde el propio sector plantea el desafío de conseguir aplicar estrategias de mitigación que no resten competitividad ni a los destinos ni a las empresas turísticas. Contribuir a la descarbonización sin que ello implique el decrecimiento del sector del ocio y los viajes se plantea como uno de los desafíos más importantes en el abordaje de esta problemática.
La Geografía en las enseñanzas universitarias de Grado en España: docencia y planes de estudios
Authors: Martínez Fernández Luis Carlos , Delgado Urrecho José María
Published: June 2017

La adaptación del sistema universitario español al Espacio Europeo de Educación Superior [EEES] ha supuesto una nueva organización de las enseñanzas superiores en nuestro país. En este contexto, el artículo detalla la presencia de la Geografía en los diferentes planes de estudios de Grado existentes, en los propios de Geografía y Ordenación del Territorio, como denominación más frecuente, y en otros Grados de las distintas ramas de conocimiento en que se agrupan los grandes campos del saber: Artes y Humanidades, Ciencias Sociales y Jurídicas, Ciencias e Ingeniería y Arquitectura. Mención aparte, por la larga vinculación establecida, merece la docencia de Geografía en las Escuelas de Magisterio, ahora transformadas en Facultades de Educación.
ESTUDO DE VIABILIDADE PARA OTIMIZAÇÃO ORGANIZACIONAL DO SETOR DE RECEPÇÃO DA POUSADA PARQUE DAS GABIROBAS, MUNICÍPIO DE RONCADOR–PR
Authors: Rosa Lucimara da , Monteiro Simone Vassallo
Published: June 2017

Esta pesquisa objetivou identificar a forma de promover melhorias da estrutura organizacional da recepção da Pousada Parque das Gabirobas, localizada no Município de Roncador - PR, em específico levantar a estrutura tecnológica existente no setor de recepção (software e hardware), avaliar a percepção dos serviços do setor de recepção e identificar a estrutura física de recepção da Pousada. Como metodologia de pesquisa, foram utilizados levantamento da literatura sobre o surgimento histórico dos meios de hospedagens, os novos meios de hospedagem e turismo rural e técnica de observação participativa. Nos servimos de instrumentos de coleta de dados como questionários que foram aplicados aos hóspedes, e por fim, entrevista não estruturada aos responsáveis pelo objeto de estudo. A pesquisa deixa claro a real importância do bom atendimento e organização do setor de recepção.
ELEMENTOS DA ECOGASTRONOMIA COMO FATOR DE CONTRIBUIÇÃO PARA POTENCIALIZAR O TURISMO NO PARQUE NACIONAL DOS LENÇÓIS MARANHENSES
Authors: Beleze Ronaldo Luiz , Souza Joniery Rubim de
Published: June 2017

A Ecogastronomia, termo cunhado por Carlo Petrini na Itália, segue alguns princípios e propõe uma alimentação capaz de preservar os grupos sociais, a biodiversidade e os modos de produção, assegurando a produção e comercialização de produtos alimentícios. Essa nova forma de se alimentar associada ao turismo sinaliza uma alternativa para a geração de renda e melhoria da qualidade de vida dos povoados de Barreirinhas – MA; portal de entrada do PNLM (Parque Nacional dos Lençóis Maranhenses). O trabalho fundamentou os aspectos geo-históricos e econômicos de Barreirinhas para elencar potencialidades ecogastronômicas de seus povoados e seu reflexo no atrativo turístico. Esse estudo objetiva analisar as possibilidades, dos elementos alimentares, humanos e de infraestrutura, que compõe a ecogastronomia, contribuir como alternativa para aumento da prática do turismo, gerando renda para as comunidades menos assistidas. Com uma abordagem descritiva e método quantitativo, o questionário como instrumento de avaliação, originou uma interpretação que revela grande aceitação e aprovação quanto ao deslocamento para usufruir de novos atrativos, bem como traça o perfil positivo dos respondentes acerca dos elementos da ecogastronomia.
Postharvest aspects of roses
Authors: Almeida Elka Fabiana Aparecida , Castricini Ariane , Reis João Batista Ribeiro , Santos Leandra Oliveira , Rodrigues Maria Geralda Vilela , Souza Guilherme Brito
Published: June 2017

This study aimed to evaluate respiratory activity, color changes and fresh weight variation of ‘Carola’ (red), ‘Avalanche’ (white) and ‘Avalanche Chá’ (tea) roses for seven days after harvest. Respiratory activity, coloration of petals and fresh weight loss were evaluated. Treatments were composed of three rose cultivars and seven days of evaluation, in a 3 x 7 factorial and a completely randomized design with four replicates of two flowers per plot. To determine the respiratory activity, in addition to the four replicates, an “experimental control” was used as a fifth replicate without roses. ‘Avalanche’ and ‘Avalanche Chá’ roses with petals of similar luminosity showed no browning during days after harvest, but are distinct in terms of chromaticity. ‘Carola’ rose has less shiny petals. On harvest day, the respiratory activity is elevated and reduces later until the fourth day, in which there is elevation of this parameter again coinciding with high fresh weight loss. During days after harvest, small changes in the color of petals were observed; however, the main changes were observed in respiratory activity and fresh weight loss.
XILOTECAS, IMPORTANTES COLECCIONES DE REFERENCIA
Authors: Vásquez Correa Ángela María
Published: June 2017

Esta breve reseña sobre las xilotecas como importantes colecciones de referencia tiene como objetivo plantear el verdadero propósito y particularidades de estas colecciones, su configuración y riguroso proceso de recopilación, registro, curaduría y conservación de ejemplares, además de su importancia como legado cultural y científico de la humanidad. Se presenta un poco de la historia y situación de las xilotecas en el panorama mundial y nacional al igual que se propone un análisis documentado de sus beneficios y pertinencia, donde se intenta incentivar a la conformación de otras colecciones y generar un cambio en su errada concepción y en su olvidada y pobre visión, así, como de los investigadores asociados a las mismas. Analiza sus necesidades inmediatas y más urgentes en Colombia, con un enfoque que pretende asegurar su apoyo y fortalecimiento por parte de las instituciones relacionadas, el desarrollo conjunto de estrategias de adquisición de ejemplares en estrecha conexión con botánicos y herbarios y la realización de investigaciones que apoyen el avance de políticas de conservación de nuestros bosques al permitir la identificación de las especies que se transportan y comercializan, esto contribuiría a combatir su tala ilegal y mejorar el uso de este valioso material en el territorio nacional.
Snatch Balance Technique
Authors: Altepeter Mary , Mike Jonathan
Published: June 2017

THE SNATCH BALANCE IS A TOTAL-BODY STRENGTH AND POWER EXERCISE THAT CAN BE PROGRAMMED IN SEVERAL WAYS, DEPENDING ON THE ABILITY OF THE ATHLETE AND JUDGMENT BY THE COACH. THIS LIFT CAN BE USED IN A PROGRESSION TOWARD LEARNING THE FULL SNATCH, USED TO HELP ATHLETES STRUGGLING WITH TECHNIQUE PATTERNS AND POSITIONAL STRENGTH IN THE FULL SNATCH, OR USED IN PLACE OF THE FULL SNATCH TO ELICIT POWER, STRENGTH, AND SPEED DEVELOPMENT. VARIATIONS OF OLYMPIC-STYLE LIFTS ARE ADVANTAGEOUS FOR TRAINING TOTAL-BODY EXPLOSIVE STRENGTH AND POWER BUT HAVE LESS TECHNICAL COMPLEXITY THAN THE FULL LIFTS. SPECIFICALLY, THE SNATCH BALANCE REQUIRES THE ATHLETE TO GENERATE FORCE INTO THE GROUND, PERFORM RAPID TRIPLE EXTENSION AT THE HIPS, KNEES, AND ANKLES TO PRESS THE BARBELL OVERHEAD, AND CATCH THE BARBELL IN AN OVERHEAD SQUAT POSITION.
Resistance Training as an Intervention for People Living With HIV/AIDS
Authors: Quiles Norberto , Ortiz Alexis
Published: June 2017

PEOPLE LIVING WITH HIV/AIDS ARE LIVING LONGER DUE TO THE ADVANCEMENT OF ANTIRETROVIRAL MEDICATIONS BUT ARE NOW EXPERIENCING OTHER COMORBIDITIES AS SIDE EFFECTS OF THESE MEDICATIONS AND DISEASE PROGRESSION. MUSCLE WASTING IS ONE OF THE TOP COMORBIDITIES FACED BY THESE INDIVIDUALS WHICH MAY DECREASE THEIR ABILITY TO ENGAGE IN ACTIVITIES OF DAILY LIVING AND PARTICIPATION IN SOCIETY. RESISTANCE EXERCISE HAS SHOWN TO BE A SAFE AND EFFECTIVE MODALITY IN COUNTERACTING THE EFFECTS OF MUSCLE WASTING AND ENHANCING THE HEALTH OF THESE INDIVIDUALS. EXERCISE PROFESSIONALS ARE IN A DESIRABLE POSITION TO AID INCREASING THE QUALITY OF LIFE OF THIS POPULATION.
Avoidant Responses to Interpersonal Provocation Are Associated with Increased Amygdala and Decreased Mentalizing Network Activity
Authors: Buades-Rotger Macià , Beyer Frederike , Krämer Ulrike M.
Published: June 2017

When intentionally pushed or insulted, one can either flee from the provoker or retaliate. The implementation of such fight-or-flight decisions is a central aspect in the genesis and evolution of aggression episodes, yet it is usually investigated only indirectly or in nonsocial situations. In the present fMRI study, we aimed to distinguish brain regions associated with aggressive and avoidant responses to interpersonal provocation in humans. Participants (thirty-six healthy young women) could either avoid or face a highly (HP) and a lowly (LP) provoking opponent in a competitive reaction time task: the fight-or-escape (FOE) paradigm. Subjects avoided the HP more often, but retaliated when facing her. Moreover, they chose to fight the HP more quickly, and showed increased heart rate (HR) right before confronting her. Orbitofrontal cortex (OFC) and sensorimotor cortex were more active when participants decided to fight, whereas the mentalizing network was engaged when deciding to avoid. Importantly, avoiding the HP relative to the LP was associated with both higher activation in the right basolateral amygdala and lower relative activity in several mentalizing regions [e.g., medial and inferior frontal gyrus (IFG), temporal-parietal junction (TPJ)]. These results suggest that avoidant responses to provocation might result from heightened threat anticipation and are associated with reduced perspective taking. Furthermore, our study helps to reconcile conflicting findings on the role of the mentalizing network, the amygdala, and the OFC in aggression.
Oviductal microvesicles and their effect on in vitro maturation of canine oocytes
Authors: Lange-Consiglio Anna , Perrini Claudia , Albini Giulia , Modina Silvia , Lodde Valentina , Orsini Eleonora , Esposti Paola , Cremonesi Fausto
Published: June 2017

The effect of conditioned medium (CM) or microvesicles (MVs), secreted by multicellular spheroids of oviductal cells, and the involvement of some microRNAs (miRNAs) were investigated in canine oocyte maturation. To generate CM, spheroids were cultured for 3 days. MVs were obtained by ultracentrifugation of CM at 100,000 gand measured for size and concentration by NanoSight instrument. Cumulus-oocyte complexes (COCs) were matured at 38.5°C with 5% CO2and 5% of O2in synthetic oviductal fluid (SOF) in biphasic systems: for 24 h, with 5.0 μg/mL of LH and for other 48 h with 10% oestrous bitch serum. SOF was used as control (CTR) or supplemented with 10% CM or 25–50–75–100–150 × 106 MVs/mL labeled with PKH-26. Results show that multicellular aggregates secreted shedding vesicles. By fluorescence microscopy, the incorporation of labeled MVs was visible only at 72 h in oocyte cytoplasm. These MVs had a positive effect (P < 0.05) on maturation rate (MII) at the concentration of 75 and 100 × 106 MVs/mL compared to CM and CTR (20.34% and 21.82% vs 9.09% and 8.66% respectively). The concentration of 150 × 106 MVs/mL provided only 9.26% of MII. The expression of three specific miRNAs (miR-30b, miR-375 and miR-503) was studied. The lower rate of MII with the higher concentration of MVs is possibly due to the high level of miR-375. In conclusion, the oviductal MVs could be involved in cellular trafficking during oocyte maturation and their possible usein vitrocould facilitate the exploitment of canine reproductive biotechnologies.
Liderazgo político y patriarcado mediático: las imágenes políticas de Cristina Fernández y Dilma Rousseff
Authors: Ríos Sierra Jerónimo
Published: June 2017

El trabajo que se expone a continuación tiene como finalidad reflexionar sobre cómo se han construido las imágenes políticas de dos presidentas latinoamericanas como son Cristina Fernández y Dilma Rousseff. Partiendo de una identificación respecto de la bibliografía más relevante, se busca mostrar de qué modo aspectos patriarcales informan y construyen una forma de entender el liderazgo político en clave netamente masculina. De esta manera, cuestiones tales como utilizar el nombre de pila, priorizar aspectos de la vida privada, entender la posición política en términos de dependencia masculina o sustantivar la posición política en términos metafórico-reproductivos son algunas de las tendencias que predominan en la forma en la que los medios proyectan y coadyuvan a construir una imagen política de las mujeres. Esto es, predominando hasta el momento una suerte de patriarcado mediático cuya superación debe ser un reto para la sociedad pospatriarcal a la que, en inicio, debemos aspirar.
Análisis multivariable del rendimiento académico del alumnado más sobresaliente de la educación secundaria obligatoria en Galicia, España
Authors: Ferreiro-Seoane Francisco-Jesús , Camino-Santos Marta , Del Campo Villares Manuel Octavio
Published: June 2017

En este artículo se pretende analizar la influencia que variables como el género, el hábitat,  la titularidad del centro o la formación de los padres, tienen en el rendimiento obtenido por el alumnado en las pruebas para optar al premio extraordinario de la Educación Secundaria Obligatoria (ESO). Dado que para presentarse al premio el alumnado tuvo que tener una nota media de sobresaliente en toda la ESO, no cabe inicialmente esperar diferencias significativas según las variables analizadas.Para ello se procedió hacer una revisión de la literatura y se analizaron las notas obtenidas por 1.522 discentes durante el período 2008-2013, en Galicia (España), usando diversas metodologías de análisis como  el Análisis de Varianza Unifactorial y Factorial, siendo el 63% del alumnado que se presentan a estas pruebas chicas, el 70,6% con padres universitarios, el 67,5% de ciudad y el 61,8% procedentes de la escuela pública.La principal conclusión es que estas variables influyen en el rendimiento de este colectivo de sobresaliente, siendo el perfil que obtiene mejor rendimiento el alumnado masculino con familia universitaria y que vive en la ciudad.