bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Comparison of Strategies for Smoothing Parameter Selection for Mixed‐Format Tests Under the Random Groups Design
Authors: Liu Chunyan , Kolen Michael J. 
Published: December 2018

AbstractSmoothing techniques are designed to improve the accuracy of equating functions. The main purpose of this study is to compare seven model selection strategies for choosing the smoothing parameter (C) for polynomial loglinear presmoothing and one procedure for model selection in cubic spline postsmoothing for mixed‐format pseudo tests under the random groups design. These model selection strategies were compared for four sample sizes (500, 1,000, 2,000, and 3,000) and two content areas (Advanced Placement [AP] Biology and AP Environmental Science). For polynomial loglinear presmoothing, the Akaike information criterion (AIC) was the only statistic that reduced both random equating error and total equating error in all investigated conditions. Cubic spline postsmoothing tended to produce more accurate results than any of the model selection strategies in polynomial loglinear smoothing.
Calculating Conditional Reliability for Dynamic Measurement Model Capacity Estimates
Authors: McNeish Daniel , Dumas Denis 
Published: December 2018

AbstractDynamic measurement modeling (DMM) is a recent framework for measuring developing constructs whose manifestation occurs after an assessment is administered (e.g., learning capacity). Empirical studies have suggested that DMM may improve consequential validity of test scores because DMM learning capacity estimates were shown to be much less related to demographic factors like examinees’ socioeconomic status compared to traditional single‐administration item response theory (IRT)–based estimates. Though promotion of DMM has hinged on improved validity, no methods for computing reliability (a prerequisite for validity) have been advanced and DMM is sufficiently different from classical test theory (CTT) and IRT that known methods cannot be directly imported. This article advances one method for computing conditional reliability for DMM so that precision of the estimates can be assessed.
Amino acid changes in the capsid protein of a reassortant betanodavirus strain: Effect on viral replication in vitro and in vivo
Authors: Souto Sandra , Olveira José G. , García‐Rosado Esther , Dopazo Carlos P. , Bandín Isabel 
Published: December 2018

AbstractBetanodavirus reassortant strains (RGNNV/SJNNV) isolated from Senegalese sole harbour an SJNNV capsid featuring several changes with respect to the SJNNV‐type strain, sharing three hallmark substitutions. Here, we have employed recombinant strains harbouring mutations in these positions (r20 and r20 + 247 + 270) and have demonstrated that the three substitutions affect different steps of the viral replication process. Adsorption ability and efficiency of viral attachment were only affected by substitutions in the C‐terminal side of the capsid. However, the concurrent mutation in the N‐terminal side seems to slightly decrease these properties, suggesting that this region could also be involved in viral binding. Differences in the intracellular and extracellular production of the mutant strains suggest that both the C‐terminal and N‐terminal regions of the capsid protein may be involved in the particle budding. Furthermore, viral replication in sole brain tissue of the mutant strains, and especially double‐ and triple‐mutant strains, is clearly delayed with respect to the wt strain. These data support previous findings indicating that the C‐terminal side plays a role in virulence because of a slower spread in the fish host brain and suggest that the concurrent participation of the N‐terminal side is also important for viral replication in vivo.
DIVIDEND POLICY AND STOCK ACQUISITION ANNOUNCEMENT RETURNS: A TEST OF ASYMMETRIC INFORMATION THEORY
Authors: Turki Aymen 
Published: December 2018

AbstractThis study examines 711 U.S. stock‐based acquisitions announced between 1985 and 2013 to analyze the relation between the acquirer's dividend policy and its stock returns when the acquisition is announced. Asymmetric information theory suggests that the lower the level of uncertainty about the acquirer's value, the smaller the acquirer's price drop when a stock‐based acquisition is announced. In support of this theoretical prediction, the current study identifies less negative acquirer stock returns around the announcement of stock acquisitions initiated by dividend‐paying firms compared with those initiated by non‐dividend‐paying firms.
FACTOR CROWDING AND LIQUIDITY EXHAUSTION
Authors: Marks Joseph M. , Shang Chenguang 
Published: December 2018

AbstractWell‐known anomalies and stable patterns in equity returns are widely employed to guide stock selection. The use of overlapping multifactor models built on these patterns induces correlated trade across investors. A stock with a strong signal from a parsimonious multifactor stock selection model exhibits changes in trade activity, net order imbalances, lower volatility, lower liquidity level, and changes in liquidity comovement consistent with correlated trade. These results illustrate that correlated trading among investors can affect the liquidity and risk of the securities they trade, and imply that measures of portfolio liquidity risk that ignore these changes can understate risk.
Intra‐abdominal hemorrhage following 739 consecutive pancreaticoduodenectomy: Risk factors and treatments
Authors: Lu Jian‐Wen , Ding Hong‐Fan , Wu Xiao‐Ning , Liu Xue‐Min , Wang Bo , Wu Zheng , Lv Yi , Zhang Xu‐Feng 
Published: December 2018

AbstractBackground and AimPost‐pancreaticoduodenectomy hemorrhage (PPH) is a potentially lethal complication. The objective of this study was to explore the risk factors of PPH and to evaluate the treatment options.MethodsClinical data of 739 consecutive patients undergoing pancreaticoduodenectomy between 2009 and 2017 were collected from a prospectively maintained database. Univariate and multivariate analysis was performed by logistic regression model to evaluate potential risk factors associated with early and late PPH.ResultsThe morbidity of PPH was 8.7% (64/739), while the mortality was 12.5% (8/64). Twenty‐two (34.4%) patients developed PPH within postoperative day 1 (early PPH) whereas 42 (65.6%) patients after postoperative day 1 (late PPH). No significant risk factor was identified associated with early PPH, whereas pancreatic duct diameter < 0.4 cm, and intra‐abdominal complications, such as pancreatic fistula, intra‐abdominal abscess, and delayed gastric emptying, were independently correlated with late PPH. There were 10 (15.6%) grade A, 28 (43.8%) grade B, and 26 (40.6%) grade C bleedings. The bleeding sites were verified by endoscopy, angiography, and/or exploratory laparotomy in 23 of 54 (42.6%) patients with grade B or C hemorrhage. Seven out of nine (78%) patients with arterial bleeding were cured by angiography and embolization, while 10 of 11 (90.9%) patients with anastomotic, venous, or retroperitoneum bleeding were rescued by laparotomy. Ten patients with grade A and 22 patients with grade B or C hemorrhage were treated successfully by blood transfusion and hemostatic medications.ConclusionsHemorrhage following pancreaticoduodenectomy is a common and lethal complication. Treatment strategies should be tailored according to different etiologies.
Case of uterine rupture after multiple intrauterine operations and uterine artery embolization
Authors: Ando Miho , Goto Maki , Matsuoka Sakiko , To Yoko , Eguchi Fuyuki , Tsujioka Hiroshi 
Published: December 2018

AbstractUterine rupture is rare but may result in both maternal and fetal death. The factors involved in such deaths depend on each case, but uterine artery embolization (UAE), the common treatment for hemorrhage, is possibly one factor. UAE may be related to uterine rupture or placenta accreta, but few data exist regarding UAE and uterine rupture. Here, we present a case of uterine rupture associated with placenta accreta that occurred after UAE. The case is a 35‐year‐old woman who became pregnant after undergoing UAE because of treatment for placental polyps twice. She underwent emergency cesarean delivery for uterine rupture. At the same time, she underwent hysterectomy because of placenta accreta. The uterus ruptured at the location where the polyp had emerged previously. Therefore, we present a case where UAE, uterine rupture and placenta accreta are possibly associated, and highlight the need for caution when performing UAE multiple times.
Standing in my customer's shoes: Effects of customer‐oriented perspective taking on proactive service performance
Authors: Huo Yuanyuan , Chen Ziguang , Lam Wing , Woods Stephen A. 
Published: December 2018

We develop a theoretical framework that delineates the process by which customer‐oriented perspective taking contributes to employees’ proactive service performance. Drawing from motivated information processing and proactivity perspectives, the model hypothesizes that employees’ customer‐oriented perspective taking enhances their role breadth self‐efficacy (RBSE), which in turn enhances proactive customer service performance and proactive complaint‐handling performance. A three‐wave, time‐lagged study, involving 145 frontline employees and their immediate supervisors in the Chinese hospitality industry, tests the research model. The results of structural equation modelling show taking customers’ perspectives results in a high level of RBSE. This relationship grows stronger if employees exhibit a strongly proactive personality. A high level of RBSE also mediates the interactive effects of customer‐oriented perspective taking and proactive personality on proactive customer service performance and proactive complaint‐handling performance. These findings provide insights for research on perspective taking, RBSE, and proactive service performance.Practitioner points

Taking customers’ perspectives results in a more satisfactory service encounter and significantly enhances employees’ service performance.

Organizations should work to increase their employees’ customer‐oriented perspective taking capabilities.

Service organizations could use intervening mechanisms in the service marketing process to help employees enhance their confidence in proactively expanding their roles.
Contribution to decision‐making on establishing the maximum water level for Lake Vegoritida
Authors: Doulgeris Charalampos , Argyroudi Anna 
Published: December 2018

AbstractThe water level in Lake Vegoritida, Greece, has undergone great changes over the past decades attributable to severe water abstraction directly from the lake and its catchment, which affected not only the conditions of the natural environment, but also social and economic conditions. The water level of the lake is currently rising, with discussion of an agreeable decision about the desired maximum lake water level becoming a source of conflict among the lake stakeholders. The present study provides a framework for a participatory management plan, with the perspective of engaging all levels of lake stakeholders in the process of deciding and establishing the maximum lake water level. Kolb's learning cycle is used as a methodological vehicle in the proposed process of participatory decision‐making. Its contribution to decision‐making includes (a) identification of lake stakeholders and the issues arising from a potential establishment of a maximum lake water level; and (b) three suggested water level scenarios to facilitate a future constructive discussion directed to establishing a maximum water level in Lake Vegoritida.
Shifts in the food of Nile perch (Lates niloticus) in Lake Victoria
Authors: Agembe Simon , Yongo Edwine , Masese Frank , Njiru James , Manyala Julius , Ojwang William 
Published: December 2018

AbstractThe study investigated diet of Nile perch in Lake Victoria and compared results with past data from the same lake in order to analyse diet shifts over time. Fish samples (2020) were collected by seining and trawling from 2012 to 2016. In overall, Caridina nilotica (59%) was the dominant food item in the diet, while Rastrineobola argentea (5%) contributed the least. The diet of Nile perch of 1 cm was copepods, cladocerans and rotifers. The diet changed to only copepods and cladocerans at 2 cm. The proportion of the relatively large calanoids increased with Nile perch size in 1988/89, comprising between 35 and 80% of the diet of fishes of 3–4 cm. Nile perch of 6–25 cm TL fed more on C. nilotica in 2012/2016, compared to 1988/1989 and 2006/08. Haplochromines were fed on more in 2006/2008 than in 2012/2016 by Nile perch of 6–30 cm TL as fish size increased. The frequencies of occurrence of R. argentea in the diet were highest in 1988/1989, and lowest in 2006/2008, for fish size of up to 30 cm TL. The proportion of Odonata in the diet of size class 16–20 and 21–30 cm TL were highest in 2012/2016 and 1988/1989, respectively. Thus, shifts in Nile perch diet was observed from zooplankton to C. nilotica, then to haplochromines and finally to fish prey as size increased. Nile perch preferred haplochromines with C. nilotica as the substitute food. Cannibalism was observed to have decreased, only being evidenced in Nile perch above 35 cm TL, which could actually have a positive impact on the Nile perch fishery. The information on shifts in diet of Nile perch in Lake Victoria is of considerable ecological importance.
Focus on economy or ecology? A three‐dimensional trade‐off based on ecological carrying capacity in southwest China
Authors: Peng Li , Deng Wei , Zhang Hao , Sun Jian , Xiong Junnan 
Published: December 2018

AbstractEconomic growth and human activities challenge the regional harmony of the economy and environment. Based on an evaluation of ecological carrying capacity (ECC), we have constructed a three‐dimensional trade‐off model for socially harmonious development for the Sichuan and Yunnan regions in southwest China. The results demonstrate that there is a continuous increase in socioeconomic coordination (SEC; slope > 0.23) and a change in the ECC in the study area, characterized by subtle fluctuations from 2000 through 2008. This was primarily due to the loss of resource and environment carrying capacity wiping out the profits of SEC. Significant government aid during the postdisaster reconstruction and more attention being paid to the environment in policy resulted in a faster increase in ECC (slope > 0.38) from 2008 to 2016. Based on this trade‐off model, managers could deeply understand the relationship between resources, the economy, and ecology.Summary for Managers

Ecological environment protection is increasingly crucial in Sichuan and Yunnan regions as they feel the effects of climate change and human activities.
The three‐dimensional trade‐off model measuring socially coordinated development is a modified multiobjective, decision‐making model.
Based on this trade‐off model, managers could, understand the relationship between resources, the economy, and ecology.
It can help manage our environmental assets and plan ecological conservation, to ensure that the environment maintains its capacity to serve the societal development.
What Drives Output Volatility? The Role of Demographics and Government Size Revisited
Authors: Iseringhausen Martin , Vierke Hauke 
Published: December 2018

AbstractThis paper studies the determinants of output volatility in a panel of 22 OECD countries. In contrast to the existing literature, we avoid ad hoc estimates of volatility based on rolling windows, and we account for possible non‐stationarity. Specifically, output volatility is modelled within an unobserved components model where the volatility series is the outcome of both macroeconomic determinants and a latent integrated process. A Bayesian model selection approach tests for the presence of the non‐stationary component. The results point to demographics and government size as important determinants of macroeconomic (in)stability. A larger share of prime‐age workers is associated with lower output volatility, while higher public expenditure increases volatility.
Physical activity and the human body in the (increasingly smart) built environment
Authors: Ulijaszek S. 
Published: December 2018

SummaryPhysical activity in the built environment of high income countries may be changing faster than at any time prior to the 2000s, with the engagement of social media, smart devices and increasing urban smartness that has come with the Internet of Things. This article describes the most salient features of built environments that have facilitated physical activity between the 1980s and 2000s (most importantly walkability and active transport with bicycles). It goes on to use the anthropological three bodies framework in association with that of forms of capital, to explore how the use of smart devices and increasing incorporation of smartness and performativity into architecture and urban planning since the 2000s might influence physical activity. Smartness and use of smart devices in the built environment should favour increased physical activity through new types of sociality that they facilitate. In turn, engagement with such technologies offers an important opportunity for the empowerment of the individual body–self and the social body towards increased physical activity.
Habitat choice stabilizes metapopulation dynamics by enabling ecological specialization
Authors: Mortier Frederik , Jacob Staffan , Vandegehuchte Martijn L. , Bonte Dries 
Published: December 2018

Dispersal is a key trait responsible for the spread of individuals and genes among local populations, thereby generating eco‐evolutionary interactions. Especially in heterogeneous metapopulations, a tight coupling between dispersal, population dynamics and the evolution of local adaptation is expected. In this respect, dispersal should counteract ecological specialization by redistributing locally selected phenotypes (i.e. migration load). Habitat choice following an informed dispersal decision, however, can facilitate the evolution of ecological specialization. How such informed decisions influence metapopulation size and variability is yet to be determined.By means of individual‐based modelling, we demonstrate that informed decisions about both departure and settlement decouple the evolution of dispersal and that of generalism, selecting for highly dispersive specialists. Choice at settlement is based on information from the entire dispersal range, and therefore decouples dispersal from ecological specialization more effectively than choice at departure, which is only based on local information. Additionally, habitat choice at departure and settlement reduces local and metapopulation variability because of the maintenance of ecological specialization at all levels of dispersal propensity. Our study illustrates the important role of habitat choice for dynamics of spatially structured populations and thus emphasizes the importance of considering that dispersal is often informed.
Immediate and late effects of Carnoy's solution on the mandibular bone of Wistar rats
Authors: Slusarenko da Silva Y. , Stoelinga P. J. W. , Naclério‐Homem M. G. 
Published: December 2018

AbstractAimCarnoy's solution is used as a complementary treatment following enucleation of odontogenic keratocysts to reduce its recurrence rate. However, its use is still controversial in the area of Oral and Maxillofacial Surgery. Our aim was to evaluate the effects of Carnoy's solution on the mandibular bone of Wistar rats in vivo, with special attention to the detrimental effects on osseous tissue.Material and methodsMonocortical defects created in the mandibular body of Wistar rats were exposed to Carnoy's solution or to saline solution for 5 min. All specimens were submitted to a histological analysis and the Wilcoxon Signed‐Rank test compared the mean percentage and percent of median of the amount of bone necrosis, blood clot and bone neoformation between the defects treated with CS and saline solution. P value <0.05 was considered to be significant.ResultsCarnoy's solution did not cause more bone necrosis than the saline solution immediately and 3 days after applications (P = 0.135 and 0.287 respectively) but diminished the formation of blood clot after 3 days (P = 0.019). However, there were no differences in the quantity and quality of bone neoformation between CS and saline 10 days after applications (P = 0.459).ConclusionsThe application of Carnoy's solution did not cause immediate nor late damage to the mandible of Wistar rats in vivo. Its use should be considered as a safe procedure and is encouraged after enucleation of keratocysts to eliminate possible epithelial cell nests, provided there is a clear clinical indication.
Case report: Leishmaniasis in the tongue presenting as an SCC
Authors: Chapman Laura , Patel Nikul 
Published: December 2018

AbstractA 72‐year‐old immunocompetent male with a frequent travel history to Spain presented with a 1 cm diameter ulcer with rolled edges on the left lateral border of the tongue. This was urgently biopsied as a squamous cell carcinoma (SCC) was suspected. Histopathology suggested a Leishmania infection which was confirmed by positive results for Leishmania DAT and K39 tests. This resulted in a diagnosis of mucocutaneous leishmaniasis. This was successfully treated by amphotericin B. Leishmaniasis solely affecting the oral mucosa is rare with few cases documented in literature.
Mitochondrial respiration is restricted by miR‐2909 within human melanocytes
Authors: Kaushik Hitaishi , Malik Deepti , Parsad Davinder , Kaul Deepak 
Published: December 2018

AbstractMost of the cancer types in general and melanoma in particular exhibit mitochondrial dysfunction leading to the Warburg effect. Our present study stemmed from the observation that human A‐375 and melanoma B16 cells displayed overexpression of a novel micro‐RNA, miR‐2909, shown in our earlier studies to be involved in aerobic glycolysis. Consequently, our study attempts to demonstrate the role of miR‐2909 in the regulation of mitochondrial function within human melanocytes. Based upon such a study, we hypothesize that mitochondrial dysfunction observed in melanomas may result from deregulated miR‐2909 expression within such cells.
Effects of temperature and other environmental factors on the post‐diapause development of walnut husk fly Rhagoletis completa (Diptera: Tephritidae)
Authors: Emery Sara E. , Mills Nicholas J. 
Published: December 2018

AbstractTo more effectively manage walnut husk fly Rhagoletis completa (Diptera: Tephritidae), in California walnut orchards, it is important to understand the factors that affect the timing of adult emergence. In the present study, we examine the effects of incubation temperature, pre‐chill and chill durations, latitude, cultivar and size on the post‐diapause development of R. completa puparia. The lower developmental threshold, upper developmental threshold and optimal temperature for puparial development are estimated to be 4, 34 and 26.6 °C, respectively. The thermal requirement for adult emergence after 120 days of chilling is estimated to be 2024 degree days. Percentage adult emergence declines at both higher and lower incubation temperatures. Chill duration at 5 °C for diapausing puparia has a nonlinear negative effect on the thermal requirement but no effect on percentage emergence. Insufficient chilling leads to poor synchronization of adult emergence. Greater pre‐chill duration at room temperature increases the thermal requirement and slightly decreased percentage emergence. Latitude has a negative effect on the thermal requirement. Puparia from northern California black walnut (Juglans hindsii) have a slightly greater thermal requirement than puparia from cultivated walnut (Julgans regia). There is no significant difference in puparial fresh weight or mean thermal requirement between males and females, although the positive correlation between thermal requirement and puparial fresh weight is stronger for females than males. The effects of temperature and other environmental factors on the post‐diapause development of R. completa are discussed in relation to observations from other Rhagoletis species.