bluuebunny/crossref_metadata_2025 huggingface dataset:
Working Memory and Reasoning Benefit from Different Modes of Large-scale Brain Dynamics in Healthy Older Adults
Authors: Lebedev Alexander V. , Nilsson Jonna , Lövdén Martin
Published: March 2018

Researchers have proposed that solving complex reasoning problems, a key indicator of fluid intelligence, involves the same cognitive processes as solving working memory tasks. This proposal is supported by an overlap of the functional brain activations associated with the two types of tasks and by high correlations between interindividual differences in performance. We replicated these findings in 53 older participants but also showed that solving reasoning and working memory problems benefits from different configurations of the functional connectome and that this dissimilarity increases with a higher difficulty load. Specifically, superior performance in a typical working memory paradigm ( n-back) was associated with upregulation of modularity (increased between-network segregation), whereas performance in the reasoning task was associated with effective downregulation of modularity. We also showed that working memory training promotes task-invariant increases in modularity. Because superior reasoning performance is associated with downregulation of modular dynamics, training may thus have fostered an inefficient way of solving the reasoning tasks. This could help explain why working memory training does little to promote complex reasoning performance. The study concludes that complex reasoning abilities cannot be reduced to working memory and suggests the need to reconsider the feasibility of using working memory training interventions to attempt to achieve effects that transfer to broader cognition.
Analysis of the accuracy and consistency of the behavioral ecology literature that investigates Tinbergen’s question “What does the behavior exist for?”
Authors: Campos Barbosa Júnior Emerson , da Rocha Pedro Luís Bernardo
Published: March 2018

Tinbergen’s question “What does the behavior exist for?” has contributed to the establishment of behavioral ecology. However, communication within this discipline could be impaired if one does not realize that the question may refer to distinct temporal scopes. Answering it requires specific methodological approaches for each scope: different interpretations of the question refer to different processes. Here we evaluate whether the behavioral ecology literature avoids these pitfalls. We analyze a sample of the articles related to Tinbergen’s question, evaluating if they: precisely delimit the temporal scope of the question; use methodology appropriate to the temporal scope of the article; accurately define the terms used to refer to the survival value of behavior; and use the terms consistently. Additionally, we evaluate whether the citation of these articles is impaired by misinterpretations regarding the temporal scope and terms associated with the question. Of the 22 analyzed articles, three present problems in defining the time of the question, but in the other 19, methods suited to the time studied were used. Four terms (fitness, effect, adaptation, and function) were used to refer to the utility of the behavior, but only one article defined all of them. We found no communication problems in the citing process regarding the time of interest of the question and the terms used to refer to the usefulness of the behavior in the 16 analyzed citation events. Low/medium- and high-impact articles were similar in terms of the problems found. We suggest future articles should define the terms used, in order to avoid miscommunication in the field.
Neuroendocrine structures of the small intestine of the capybara Hydrochoerus hydrochaeris (Mammalia, Rodentia)
Authors: Rodrigues Sartori Sirlene Souza , Peixoto Juliano Vogas , Lopes Vanessa de Paula Guimarães , Barbosa Alfredo José Afonso , Neves Clóvis Andrade , Fonseca Cláudio César
Published: March 2018

A complex network of nerve fibers of the enteric nervous system and enteroendocrine cells is known to regulate the gastrointestinal tract. The distribution and frequency of the argyrophil, argentaffin and serotonin immunoreactive endocrine cells and of the submucosal and myenteric nervous ganglia were studied in the small intestine of the capybara Hydrochoerus hydrochaeris, aiming to verify the existence of possible numerical correlations between endocrine cells and nervous ganglia. Fragments of the duodenum, jejunum and ileum of adult animals were collected and processed according to routine histological techniques. To study the nervous ganglia, hematoxylin and eosin staining was used, while specific staining techniques were used to study the argyrophil, argentaffin and serotonin immunoreactive endocrine cells: Grimelius, modified Masson-Fontana and peroxidase anti-peroxidase, respectively. Endocrine cells were more abundant in the area of the crypts and, in relation to their morphology, ‘open type’ endocrine cells prevailed. The population of argyrophil cells was larger than that of argentaffin cells, and these cells were larger than serotonin immunoreactive cells. The frequency of endocrine cells was apparently greater in the duodenum, indicating the importance of this intestinal segment in digestive and absorptive functions. Prominent nervous ganglia were observed in the submucosal and myenteric plexi, and were larger and more frequent in the myenteric plexus. A numerical correlation was found among the endocrine cells (argentaffin and serotonin immunoreactive cells) and the myenteric nervous ganglia, suggesting the presence of physiological interactions among the endocrine and nervous systems for the control of intestinal activities. The findings in this study contribute to the understanding of the digestive processes of this species, which may also help in its conservation and future survival.
Relationship between chorusing activity and number of oviposition events in the Otton frog
Authors: Iwai Noriko
Published: March 2018

Call surveys are an effective technique for detecting the presence and activity of breeding male frogs. Such surveys have been used to quantify breeding activity at a site under the assumption that male chorusing activity appropriately reflects breeding consequences, such as the number of oviposition events. However, only a few studies have actually examined the relationship between chorusing activity and breeding consequences in the field. In this study, I examined the relationship between chorusing activity (the number of male calls recorded during a five-minute period every night) and the number of oviposition events (number of oviposited egg masses during the night) of the Otton frog, Babina subaspera, with regard to the time lag between calls and oviposition. I constructed nine generalized linear mixed models (GLMMs) to explain the number of oviposition events by chorusing activity on the same night and on nights 1 to 7 days before the oviposition events. The Akaike information criterion (AiC) of the GLMM was lowest when the number of calls from nights 2 days before the oviposition events was used, indicating that breeding consequences in Otton frogs reflect the chorusing activity of 2 days prior. This study shows that frog call surveys can be reliable tools with which to represent breeding activity at a site as long as the time lag between chorusing activity and breeding consequences is considered.
Taxonomic notes on Exetastes fukuchiyamanus Uchida, 1928 (Hymenoptera, Ichneumonidae, Banchinae), with description of a new species from Japan and China
Authors: WATANABE KYOHEI , SHENG MAO-LING
Published: March 2018

Exetastes fukuchiyamanus Uchida, 1928 (Ichneumonidae, Banchinae) is redescribed and its taxonomic status and distribution in Japan and China is reviewed. A new species, E. compressus sp. nov., is described based on specimens collected from China and Japan.
A new species of Eburia Lacordaire, 1830 (Coleoptera: Cerambycidae) from Mexico
Authors: PÉREZ-FLORES OSCAR , TOLEDO-HERNÁNDEZ VÍCTOR H. , VILLAGOMEZ FERNANDO
Published: March 2018

Eburia (Eburia) angeldiazi sp. nov. is described from Michoacán, Mexico. Distinguishing characters from closely related species are given and discussed. According to the results of our research, E. (E.) angeldiazi sp. nov. is distributed in the state of Michoacán, Mexico whereas E. (E.) macrotaenia Bates, 1880 occurs in the state of Chiapas, Mexico as well as Guatemala and El Salvador.
Two new species and records of Olophrum laxum species group (Coleoptera: Staphylinidae: Omaliinae: Anthophagini) from China and Nepal
Authors: SHAVRIN ALEXEY V.
Published: March 2018

Two new species of the genus Olophrum Erichson, 1839 of the laxum group are described and illustrated: O. lama Shavrin, sp.n. (Nepal: Rolwaling Himal) and O. schuelkei Shavrin, sp.n. (China: Shaanxi). Olophrum laxum Shavrin & Smetana, 2017 from Yunnan and O. pacei Shavrin & Smetana, 2017 from Shaanxi and Hubei provinces of China are recorded for the first time. A modified key of the laxum group is provided.
Ditylenchus sarvarae sp. n. (Tylenchina: Anguinidae) from Iran
Authors: SHOKOOHI EBRAHIM , IRANPOUR FAHIME , PENEVA VLADA , ELSHISHKA MILKA , FOURIE HENDRIKA , SWART ANTOINETTE
Published: March 2018

During a survey of soil nematodes in Iran, a new species of Ditylenchus Filipjev, 1936 was discovered. Ditylenchus sarvarae sp. n. is characterised by its body length (1.0–1.4 mm), lateral field with seven incisures and without areolation, long postuterine sac (1.8–2.8 times the corresponding body diameter) and conical female tail with pointed tip (68–89 μm long, c = 13.7–18.2, c' = 4.2–5.1). Male specimens have conical tails (64–70 μm long, c = 14.5–16.7, c' = 4.0–4.5), spicules (22–26 μm long) and gubernaculum (8–10 μm long). Measurements and illustrations are provided for this new species. A molecular study of the 28S rDNA region of D. sarvarae sp. n. demonstrates that the Iranian species belongs to a separate group compared with the other molecularly characterized species of genus Ditylenchus.
The tenth member of stout newt (Amphibia: Salamandridae: Pachytriton): Description of a new species from Guangdong, southern China
Authors: LI CHEN , YUAN ZHIYONG , LI HAIBIN , WU YUNKE
Published: March 2018

Field surveys of less-explored forests often lead to discoveries of new amphibian species. During a series of field surveys in early 2017 at Mt. Lianhua (the Lotus Mountain) of Lianhuashan-Baipenzhu Provincial Nature Reserve in southern China, we found an undocumented population of stout newt, genus Pachytriton. Based on its distinct morphological characters and large genetic divergence from congeners (uncorrected p-distance > 5% in either mitochondrial nd2 or cytb sequences), we describe this population as the tenth species of the genus: Pachytriton airobranchiatus sp. nov. It can be distinguished from other members of Pachytriton by a combination of the following morphological characters: prominently elevated distal end of the epibranchial bone showing as two conspicuous protruding bulges behind the head; dorsal coloration can be either spotted or unspotted; bright orange dots absent on dorsum; costal grooves absent between axilla and groin; fingers I and toe I slender, do not forms a volar pad; dorsal tips of fingers and toes brown; and tips of fore- and hind limbs could contact when limbs adpressed against body flank. Phylogenetic analysis grouped the new species with P. wuguanfui, P. xanthospilos, and P. changi. Currently, the new species is known from the type locality and an adjacent mountain peak at about 1000 m elevation. It inhabits small montane streams in broadleaf forests near the top of the mountain.
The male terminalia of some African species of Helina Robineau-Desvoidy, 1830 (Diptera, Muscidae)
Authors: COURI MÁRCIA S. , PONT ADRIAN C.
Published: March 2018

The morphology of the male terminalia of fourteen African species of Helina Robineau-Desvoidy, 1830 (Diptera, Muscidae) is described and illustrated: H. dorsalis (Stein, 1914); H. emdeni Pont, 1980, H. fuscibasis Emden, 1951; H. gracilior Emden, 1951; H. hirtipes metatarsalis Emden, 1951, H. juxtamedialis Emden, 1951; H. lasiopa Emden, 1951; H. mollis (Stein, 1906); H. naivashensis Emden, 1951, stat. nov. (herein raised to species rank); H. nemoralis (Stein, 1913); H. novarae (Schiner, 1868), H. penicillata Emden, 1951; H. quadruplex (Stein, 1913); and H. trinubilifera (Malloch, 1921). These species demonstrate that the terminalia can be very varied, with different shapes of sternite 5, sometimes with very strong and long setae, and a short or elongated cercal plate and surstylus that sometimes can bear spines. Some of these species also share other external characters that are unusual among Helina, such as the arrangement of the katepisternal setae as an equilateral triangle, the absence of an anterodorsal seta on mid tibia, and wings with dark clouds. Most of these species are well described in the literature, but the male terminalia have never been studied in detail. The material studied here is deposited in the Natural History Museum (BMNH), London, United Kingdom.
Phylogenetic position of Aerumnosa Mohrig (Diptera, Sciaridae) as revealed by multigene analysis, with the description of four new Oriental species
Authors: VILKAMAA PEKKA , RUDZINSKI HANS-GEORG , BURDÍKOVÁ NIKOLA , ŠEVČÍK JAN
Published: March 2018

Four Oriental species of Aerumnosa Mohrig, 1999 (Diptera: Sciaridae), a genus previously known only from Papua New Guinea, are newly described and illustrated: Aerumnosa bituberculata sp. n. (India), A. gemmifera sp. n. (Malaysia: Sabah), A. horrifica sp. n. (Brunei, Thailand) and A. impar sp. n. (Malaysia: Sabah). On the basis of the new material, the genus is redefined. A key to the known species of Aerumnosa is presented, including four new species. An updated molecular phylogenetic analysis based on four gene markers (18S, 28S, 16S and COI) shows Aerumnosa to be a member of the subfamily Cratyninae. The monophyly of Cratyninae is well supported, which clade also includes the genera Hyperlasion Schmitz, 1919, Pnyxiopalpus Vilkamaa & Hippa, 1999 and Pseudoaerumnosa Rudzinski, 2006. According to the present phylogenetic hypothesis, the monophyly of Cratyna Winnertz, 1967 s. l. needs to be revisited. The clade including Cratyna (s. str.) ambigua (Lengersdorf, 1934) appears as the sister group of Aerumnosa.
Systematics of the Satyrium (Superflua) deria (Moore, 1865) species group with description of a new species from Afghanistan (Lepidoptera, Lycaenidae)
Authors: KRUPITSKY ANATOLY V. , PLJUSHTCH IGOR G. , PAK OLEG V.
Published: March 2018

Satyrium (Superflua) deria (Moore, 1865) species group is revised. The group contains four species: S. (S.) deria (northern Himalayan region and southwestern Pamirs), S. (S.) muksuria Churkin & Pletnev, 2010 (southwestern Alay Mountains and Peter the Great Range), S. (S.) zabirovi Churkin & Pletnev, 2010 (from northwestern Pamirs to Darvaz Range), and S. (S.) hazarajatica sp. n. (type locality: central Afghanistan, Bamyan Province, Band-e Amir valley, env. Yakawlang). The new species differs from the other members of the group in the male and female genitalia, wing pattern, and colouration. Female genitalia of the S. (S.) deria, S. (S.) muksuria and S. (S.) zabirovi are illustrated and discussed for the first time. S. (S.) muksuria is newly recorded from the Alay Mountains. A key to species of the S. (S.) deria group is provided.
Application of the Generalized Gamma Model to Represent the Full Rain Drop Size Distribution Spectra
Authors: Thurai Merhala , Bringi V. N.
Published: March 2018

We report on measurements of drop size distributions (DSD) using collocated instruments (a Droplet Measurement Technologies, Inc., Meteorological Particle Spectrometer and a 2D-video disdrometer) from two locations with different rainfall climates (Greeley, Colorado, and Huntsville, Alabama, with measurements from the latter that include the outer rainbands of Hurricane Irma). The combination of the two instruments gives what we term as the “full” DSD spectra, the shape of which generally cannot be represented by the standard gamma model, but instead requires the additional flexibility of the generalized gamma model, which includes two shape parameters (μ and c). The double-moment normalization of DSDs using the third and fourth moments is used to arrive at the intrinsic shapes of the DSD with two shape parameters that are shown to capture simultaneously the drizzle mode as well as the precipitation mode, together with a “plateau” region between the two. The estimation of μ and c is done with a global search using nonlinear least squares, and the error residuals are examined to check the sensitivity of the parameters to a preselected, allowed tolerance around the minimum error in the μ, c plane. This leads to a range of plausible fits for a given normalized DSD mainly governed by the c parameter. The stability or invariance of the shape of the normalized DSDs from the two sites is examined, and on average the shapes are similar with some variability at the large normalized diameter end that is explained by the aforementioned range of plausible fits. Heuristic goodness-of-fit methods are described that demonstrate that the generalized gamma model outperforms the standard gamma model with only one shape parameter (μ).
A Three-Region Conceptual Model for Central Pacific El Niño Including Zonal Advective Feedback
Authors: Fang Xiang-Hui , Mu Mu
Published: March 2018

The simple zonal two-region framework of the recharge paradigm can accurately manifest the traditional eastern Pacific (EP) type of El Niño–Southern Oscillation (ENSO), as its major warming center is located in the EP and the anomalous sea surface temperature (SST) changes monotonically from west to east along the equatorial Pacific. However, it cannot fully depict the variations of the central Pacific (CP) type of ENSO, whose major warming center is mainly situated in the CP. Therefore, to better investigate the characteristics of the CP type of ENSO, the recharge paradigm is extended to a three-region conceptual model to describe the entire western, central, and eastern equatorial Pacific. The results show that the extended conceptual model can depict the different variations between the CP and EP well. Specifically, with increasing magnitude of the zonal advective feedback over the CP (i.e., imitating the situation for CP ENSO), the period of the system and SST magnitude over the CP and EP both decrease. However, the decreasing amplitude is more intense over the EP, indicating an enlargement of the SST differences between the CP and EP. These results are all consistent with the observational characteristics of CP ENSO.
How Well Can We Correct Systematic Errors in Historical XBT Data?
Authors: Cheng Lijing , Luo Hao , Boyer Timothy , Cowley Rebecca , Abraham John , Gouretski Viktor , Reseghetti Franco , Zhu Jiang
Published: March 2018

Biases have been identified in historical expendable bathythermograph (XBT) datasets, which are one of the major sources of uncertainty in the ocean subsurface database. More than 10 correction schemes were proposed; however, their performance has not been collectively evaluated and compared. This study quantifies how well 10 different available schemes can correct the historical XBT data by comparing the corrected XBT data with collocated reference data in both the World Ocean Database (WOD) 2013 and the EN4 dataset. Four different metrics are proposed to quantify their performances. The results indicate CH14 is the best among the currently available methods, and L09/G12/GR10 can be used with some caveats. To test the robustness of the schemes, we further train the CH14 and L09 by using 50% of the XBT–reference data and the schemes are tested by using the remaining data. The results indicate that the two schemes are robust. Moreover, the EN4 and WOD comparison datasets show a systematic difference of XBT error (~0.01°C on a global scale and 0–700 m on average). influences of quality control and data processing have been investigated. Additionally, the side-by-side XBT–CTD comparison experiment is used to examine the correction schemes and provides independent high-quality data for the assessment. The schemes that best correct the global datasets do not always perform as well at correcting the side-by-side dataset, and further examination of the discrepancy in performance is still required. Finally, CH14 and L09 result in very similar ocean heat content (OHC) change estimates in the upper 700 m since 1966, suggesting the potential of reducing XBT-induced error in OHC estimates.
Changes in Neighborhood Social Control and Disorder and Their Relationship to Exercise Behavior
Authors: Wallace Danielle , Chamberlain Alyssa W. , Fahmy Chantal
Published: March 2018

Neighborhood disorder influences a myriad of health conditions and behaviors, including physical activity. Disorder diminishes individuals’ perceptions of neighborhood safety, which then potentially reduces exercise behavior. This study explores the relationship between individuals’ perceptions of neighborhood disorder, social control, and their exercise behavior, and whether individuals’ perceived changes in disorder and social control are also related to exercise behavior. Using the Community, Crime, and Health survey, we employ Poisson-logit hurdle models to address these questions. Results show that the safer respondents perceive their neighborhood, the more days a week they engage in moderate exercise. Perceptual changes had similar effects for moderate and strenuous exercise. Perceptual decreases in graffiti increase moderate exercise. Perceived reductions in overall social control and disorder as well as other cues decreased the likelihood and overall amount of strenuous exercise. In conclusion, when individuals perceive that their environment is improving, this may encourage increased exercise.
Perceptual Aspects of Postural Control: Does Pure Proprioceptive Training Exist?
Authors: Nagy Edit , Posa Gabriella , Finta Regina , Szilagyi Levente , Sziver Edit
Published: March 2018

As proprioceptive training is popular for injury prevention and rehabilitation, we evaluated its effect on balance parameters and assessed the frequency spectra of postural sway linked with the various sensory channels. We recorded the Center of Mass displacement of 30 healthy student research participants (mean age = 21.63; SD = 1.29 years) with a single force plate under eyes open (EO) and eyes closed (EC) positions while standing on either a firm or foam surface, both before and after an 8-week balance training intervention on a foam surface with EC. We subjected the data to frequency power spectral analysis to find any differences between the frequency bands, linked with various sensory data. On the foam surface in the EC condition, the sway path decreased significantly after proprioceptive training, but, on the firm surface in the EC condition, there was no change. On the foam surface in the EC condition, there was also a significant decrease in frequency power postproprioceptive training in the medium-to-low frequency band. While our data indicate better posttraining balance skills, improvements were task specific to the trained condition, with no transfer of the acquired skill, even to a similar, easier condition. As training improved the middle-low frequency band, linked with vestibular signals, this intervention is better described as balance than “proprioceptive” training.
Online, Offline, and Over the Line: Coercive Sexting Among Adolescent Dating Partners
Authors: Kernsmith Poco D. , Victor Bryan G. , Smith-Darden Joanne P.
Published: March 2018

This study examines the incidence and correlates of coercive sexting by dating partners among middle and high school students, including sex-based differences and associations with other forms of sexual coercion. Survey data from a study of protective factors for teen dating violence in middle and high school students were examined ( N = 1,236). Of youth who reported at least one dating or sexual partner in the past 12 months, 12% reported coercive sexting victimization and 8% acknowledged pressuring a partner to sext. Other forms of sexual coercion including the use of threats and insistence on sex without a condom were significantly associated with perpetration and victimization of coercive sexting. Coercive sexting was notably more prevalent in the high school cohort, with boys significantly more likely to pressure a partner than girls. The strong association with other forms of sexual coercion suggests a potential link to broader patterns of teen dating violence.
Spatiotemporal Contingencies in Tourists’ Intradiurnal Mobility Patterns
Authors: Grinberger A. Yair , Shoval Noam
Published: March 2018

Tourists’ activity patterns result from complex interactions between time–space constraints and cognitive, social, cultural, and emotional factors. Accordingly, tourists’ intradestination activity is studied today from multiple perspectives. Yet knowledge regarding the interrelationships between these factors is limited. The current research aims to contribute to the bridging of this gap, by studying tourists’ activity patterns and the time–space resource allocation decisions they reflect. Using a smartphone application, 384 tourists’ activity days in the cities of Tel-Aviv and Jerusalem were tracked and characterized in terms of resource allocation patterns, identifying three distinct behavioral patterns. The effects of various personal and external factors on group membership were then assessed. The results uncover complex relationships between various decision-making dimensions, where interdimensional interactions occur at multiple spatial scales and decision-making instances. These findings suggest that activity patterns emerge from a decision time–space in which effects are contingent upon each other across scales and behavioral dimensions.
A Continuous a-Stratification Index for Item Exposure Control in Computerized Adaptive Testing
Authors: Huebner Alan , Wang Chun , Daly Bridget , Pinkelman Colleen
Published: March 2018

The method of [Formula: see text]-stratification aims to reduce item overexposure in computerized adaptive testing, as items that are administered at very high rates may threaten the validity of test scores. In existing methods of [Formula: see text]-stratification, the item bank is partitioned into a fixed number of nonoverlapping strata according to the items’[Formula: see text], or discrimination, parameters. This article introduces a continuous [Formula: see text]-stratification index which incorporates exposure control into the item selection index itself and thus eliminates the need for fixed discrete strata. The new continuous [Formula: see text]-stratification index is compared with existing stratification methods via simulation studies in terms of ability estimation bias, mean squared error, and control of item exposure rates.
Using Odds Ratios to Detect Differential Item Functioning
Authors: Jin Kuan-Yu , Chen Hui-Fang , Wang Wen-Chung
Published: March 2018

Differential item functioning (DIF) makes test scores incomparable and substantially threatens test validity. Although conventional approaches, such as the logistic regression (LR) and the Mantel–Haenszel (MH) methods, have worked well, they are vulnerable to high percentages of DIF items in a test and missing data. This study developed a simple but effective method to detect DIF using the odds ratio (OR) of two groups’ responses to a studied item. The OR method uses all available information from examinees’ responses, and it can eliminate the potential influence of bias in the total scores. Through a series of simulation studies in which the DIF pattern, impact, sample size (equal/unequal), purification procedure (with/without), percentages of DIF items, and proportions of missing data were manipulated, the performance of the OR method was evaluated and compared with the LR and MH methods. The results showed that the OR method without a purification procedure outperformed the LR and MH methods in controlling false positive rates and yielding high true positive rates when tests had a high percentage of DIF items favoring the same group. In addition, only the OR method was feasible when tests adopted the item matrix sampling design. The effectiveness of the OR method with an empirical example was illustrated.
Constituting Challenges in Differing Arenas of Power: Worker Centers, the Fight for $15, and Union Organizing
Authors: Juravich Tom
Published: March 2018

Too often, the comparing and contrasting of traditional and alt-labor are done as if they were different points on a single dimension. This false equivalency has sometimes led to odd, fanciful, and in some cases dangerous proposals. This paper argues that worker centers, the Fight for $15, and unions operate in distinct and different arenas of power and constitute challenges to different power brokers. It is also clear that they do not use distint types of power but that they use multiple forms of power. It is fundamental that a social movement for workers’ rights needs activity in all arenas of power.
Performative Silences: Potentiality of Organizational Change
Authors: Dupret Katia
Published: March 2018

The article highlights the importance of silence in the change process of organizations, making the claim that silence distributes authority and decision-making processes. It thus adds to existing organization literature that applies a performative approach to silence as neither static nor neutral. It creates new realities. Silence as an act, rather than a noun, is conceptualized as central to organizational change. Through an ethnographic study in a mental healthcare organization, it is shown how different performances of silence make new decision-making processes available and influence new work practices that are central to understanding the particular characteristics of psychiatric organizations. Although the performance of silence can have somewhat immaterial and mundane connotations, when one uses an actor-network theory approach to organization studies, the performance of silence becomes helpful in conceptualizing how new and old practices are often imbedded into each other.
Physical Activity and Function in Assisted Living Residents
Authors: Resnick Barbara , Galik Elizabeth , Boltz Marie , Vigne Erin , Holmes Sarah , Fix Steven , Zhu Shijun
Published: March 2018

The purpose of this study was to consider the feasibility, reliability, and validity of MotionWatch 8. A total of 249 residents were recruited from 26 assisted living settings. Data collection included demographics, comorbidities, function (Barthel Index), physical activity (MotionWatch 8), and falls. The mean age of participants was 86.86 ( SD = 7.0), the majority were women 179 (74%) and White ( N = 232, 96%). A total of 86% of participants wore the MotionWatch 8. There were no significant differences in physical activity over 3 days of testing. The MotionWatch 8 findings were significantly associated with activities of daily living (ADL) function. There were no significant differences in ADL function or physical activity between those who did and did not fall. The study provides additional support for the feasibility, reliability, and validity of the MotionWatch 8 and confirms that older adults living in assisted living settings spend the majority of their time in sedentary activity.
A convex polynomial model for planar sliding mechanics: theory, application, and experimental validation
Authors: Zhou Jiaji , Mason Matthew T , Paolini Robert , Bagnell Drew
Published: March 2018

We propose a polynomial model for planar sliding mechanics. For the force–motion mapping, we treat the set of generalized friction loads as the 1-sublevel set of a polynomial whose gradient directions correspond to generalized velocities. The polynomial is confined to be convex even-degree homogeneous in order to obey the maximum work inequality, symmetry, shape invariance in scale, and fast invertibility. We present a simple and statistically efficient model identification procedure using a sum-of-squares convex relaxation. We then derive the kinematic contact model that resolves the contact modes and instantaneous object motion given a position controlled manipulator action. The inherently stochastic object-to-surface friction distributions are modeled by sampling polynomial parameters from distributions that preserve sum-of-squares convexity. Thanks to the model smoothness, the mechanics of patch contact is captured while being computationally efficient without mode selection at support points. Simulation and robotic experiments on pushing and grasping validate the accuracy and efficiency of our approach.
Rivaroxaban versus nadroparin for preventing deep venous thrombosis after total hip arthroplasty following femoral neck fractures: A retrospective comparative study
Authors: Zhang Chi , Xu Bo , Liang Guanzhao , Zeng Xianshang , Yang Chen , Zhang Fan , Wan Zi , Yu Weiguang , Chen Deng , Ge Zhe , Zhang Xinchao
Published: March 2018

Objective

This study was performed to evaluate the efficacy of rivaroxaban versus nadroparin for preventing deep venous thrombosis (DVT) in elderly patients with osteoporosis undergoing initial total hip arthroplasty (THA) for femoral neck fractures.

Methods

Prospectively maintained databases were reviewed to retrospectively compare elderly patients with osteoporosis who underwent initial THA for femoral neck fractures from 2007 to 2015. The patients received peroral rivaroxaban at 10 mg/day for 2 weeks or subcutaneous injections of nadroparin at 0.3 mL/day for 2 weeks until the primary analysis cut-off date. The time to first on-study DVT was the primary endpoint.

Results

In total, 399 patients were included (rivaroxaban group: n=200; mean age, 70.20 ± 9.16 years and nadroparin group: n = 199; mean age, 69.90 ± 8.87 years), with a mean 3-year follow-up. The time to first on-study DVT was significantly longer in the rivaroxaban than nadroparin group (12 and 5 days, respectively). The incidence of DVT within the 2-week follow-up was significantly higher in the nadroparin than rivaroxaban group (6.8% and 19.7%, respectively), but this difference was no longer present at the final follow-up.

Conclusion

Rivaroxaban was associated with a significant reduction in the occurrence of first on-study DVT compared with nadroparin.
Open-display and the ‘re-agencing’ of the American economy: Lessons from a ‘pico-geography’ of grocery stores in the USA, 1922–1932
Authors: Cochoy Franck
Published: March 2018

This paper aims to describe marketization processes in terms of ‘market agencing’. The agencing framework is presented through the study of the Progressive Grocer, a trade magazine that presented new ideas about the grocery business and proposed novel ‘agencements’ for American grocery stores in the early 1920s. The case shows that agencing consists of combining the agency of grocers and market devices to shape a different retail environment; that is, a new ‘agencement’ as a situated and flexible combination of market equipment and managerial logics. The paper shows how the introduction of ‘open display’ – that is, providing a better visual access to the goods while preserving service – introduced new furniture and ideas, and thus eased the transition from counter service to self-service. The first section presents the agencing framework, the empirical source, The Progressive Grocer, and the method used to analyse it. This method is labelled ‘pico-geography’. The idea is to conduct analysis on an even smaller scale than micro-geography by focusing on spatial reconfigurations that occur at the indoor and store level. The second section presents the concept of the open display and describes how it contributed to ‘re-agence’ the grocery equipment, workforce and even consumers. The third section puts this journey into perspective, revealing that, though promoted by The Progressive Grocer, it was also part of a larger reconfiguration involving several other actors. The conclusion stresses the empirical, methodological and theoretical contribution of the paper.
“My Family Are Supportive . . . But People in My Village Mock Me”: Bonding and Bridging Capital among Women Pursuing Secondary Education in Kathmandu, Nepal
Authors: Karki Srijana , Mix Tamara L.
Published: March 2018

Women’s secondary schools have become an option for educational attainment in Nepal. We assess bonding and bridging social capital available to women who attend the Utprerana Women Secondary School (UWSS) in Nepal’s major city of Kathmandu. Using qualitative approaches, we consider the social capital available to women that both encourages and limits women’s educational access and address the networks women build when attending school. Bonding capital both encourages women to pursue their education and demands that women conform to traditional roles. School attendance prompts a change in bonding social capital, accumulated with family prior to school attendance. Women add to their bonding social capital by strengthening relationships with classmates and teachers. Women’s school attendance improved bridging social capital by enhancing future opportunities. Bonding social capital formed within the school provides emotional support, personal space from domestic responsibilities, and a sense of freedom, while demanding women’s conformity to expectations for student conduct.
Shaping and Reshaping Care and Migration in East and Southeast Asia
Authors: Peng Ito
Published: March 2018

This article examines how culture, institution, and social policies interact to shape national approaches to care and the use of migrant care workers. I compare Japan, South Korea, Taiwan, Hong Kong and Singapore to show variations in approaches to care and migration despite their cultural similarities. Through a conceptual framework that intersects culture, institution and policy I identify a spectrum of approaches that are evident across East Asia, ranging from highly regulated institutional to very liberal market oriented. The analysis shows that cultural, institutional and socio-economic factors are continuously interacting with each other to shape national understandings of care and the use of foreign care workers, and that different policies interact with each other referentially as they develop and affect social and cultural norms through policy feedback.
The manifestation of the Younger Dryas event in the East Asian summer monsoon margin: New evidence from carbonate geochemistry of the Dali Lake sediments in northern China
Authors: Fan Jiawei , Xiao Jule , Wen Ruilin , Zhang Shengrui , Wang Xu , Cui Linlin , Liu Yanhong , Li He , Yue Jiaojiao
Published: March 2018

The processes and mechanisms of the Younger Dryas (YD) event in the modern northern margin of the East Asian summer monsoon (EASM) are still heatedly debated. This study presents new high-resolution (~25 years) records of elements and stable isotopes of <38-µm calcites from a sediment core from Dali Lake in order to investigate the climatic change in the EASM margin at the last glacial–interglacial transition. The <38-µm calcites in the Dali Lake sediments are cubical or rhombohedral, implying that they are predominated by endogenic calcites precipitated within the water body of the lake. High values of Ca and Mg concentrations of the endogenic calcites are interpreted as strong evaporation and low dissolved CO2 concentration of the lake water related to high regional temperature. Concurrent increases in δ13C and δ18O values of the endogenic calcites are interpreted as the result of intensified evaporation associated with high temperature or low precipitation in the region. These data indicate that the climate in the Dali Lake region was relatively warm and wet from 15,500 to 12,800 and from 11,550 to 10,000 cal. yr BP, and cold and dry from 12,800 to 11,550 cal. yr BP, which was generally supported by the evidence from the data of sedimentary organic matter from the same sediment core. In addition, the abruptness of the temperature change in the Dali Lake region from 12,800 to 11,550 cal. yr BP could be corresponded, within age uncertainties, to the YD cold reversal occurring over northern high latitudes. The atmospheric coupling between the North Atlantic region and the EASM margin was proposed as the dominant pattern influencing the climatic change in the Dali Lake region during the YD event.
Human Umbilical Cord Blood Serum–derived α-Secretase
Authors: Habib Ahsan , Hou Huayan , Mori Takashi , Tian Jun , Zeng Jin , Fan Shengnuo , Giunta Brian , Sanberg Paul R. , Sawmiller Darrell , Tan Jun
Published: March 2018

Alzheimer’s disease (AD) is an age-related disorder that affects cognition. Our previous studies showed that the neuroprotective fragment of amyloid procurer protein (APP) metabolite, soluble APPα (sAPPα), interferes with β-site APP-cleaving enzyme 1 (BACE1, β-secretase) cleavage and reduces amyloid-β (Aβ) generation. In an attempt to identify approaches to restore sAPPα levels, we found that human cord blood serum (CBS) significantly promotes sAPPα production compared with adult blood serum (ABS) and aged blood serum (AgBS) in Chinese hamster ovary cells stably expressing wild-type human APP. Interestingly, CBS selectively mediated the α-secretase cleavage of human neuron-specific recombinant APP695 in a cell-free system independent of tumor necrosis factor-α converting enzyme (TACE; a disintegrin and metalloproteinase domain-containing protein 17 [ADAM17]) and ADAM. Subsequently, using 3-step chromatographic separation techniques (i.e., diethylaminoethanol, size-exclusion, and ion-exchange chromatography), we purified and ultimately identified a CBS-specific fraction with enhanced α-secretase catalytic activity (termed αCBSF) and found that αCBSF has more than 3,000-fold increased α-secretase catalytic activity compared with the original pooled CBS. Furthermore, intracerebroventricular injection of αCBSF markedly increased cerebral sAPPα levels together with significant decreases in cerebral Aβ production and abnormal tau (Thr231) phosphorylation compared with the AgBS fraction with enhanced α-secretase activity (AgBSF) treatment in triple transgenic Alzheimer’s disease (3xTg-AD) mice. Moreover, AgBSF administered intraperitoneally to transgenic mice with five familial Alzheimer’s disease mutations (5XFAD) via an osmotic mini pump for 6 weeks (wk) ameliorated β-amyloid plaques and reversed cognitive impairment measures. Together, our results propose the necessity for further study aimed at identification and characterization of α-secretase in CBS for novel and effective AD therapy.
Learn, Expand, Engage: A Model for Teaching Clinical Skills in the Helping Professions
Authors: Glance Dorea , Rhinehart Alessandra , Brown Amanda
Published: March 2018

Drawing upon foundations in constructivist philosophies, learner-centered and flipped-classroom pedagogies, the Learn, Expand, Engage (LEE) Model for teaching clinical skills across the mental health helping professions is presented. Utilizing and incorporating strengths of multiple helping professions, the goals of this model is to enable postsecondary instructors to create environments for learning which empower students to reach the highest levels of learning described in the revised version of Bloom’s Taxonomy. Implications for use of the LEE model include developmentally appropriate instructional strategies based on mastery of clinical skills, active learning activities, and flexibility to respond to individual student learning needs. The LEE model provides a framework for higher education instruction that directly responds to a recently identified need for competency-based student learning pedagogy in the helping professions.
Genetic Analysis of Syndromic and Nonsyndromic Patients With Craniosynostosis Identifies Novel Mutations in the TWIST1 and EFNB1 Genes
Authors: Apostolopoulou Despina , Kaxira Olga S. , Hatzaki Angeliki , Panagopoulos Kanaris P. , Alexandrou Konstantinos , Stratoudakis Alexander , Kollia Panagoula , Aleporou Vassiliki
Published: March 2018

Introduction:

Craniosynostosis, the premature fusion of cranial sutures, is usually divided into 2 major categories: syndromic and nonsyndromic. Mutations in the FGFR1, FGFR2, FGFR3, TWIST1, and EFNB1 genes cause the common craniosynostosis syndromes Muenke, Crouzon and Crouzon with acanthosis nigricans, Apert, Pfeiffer, Saethre-Chotzen, and Craniofrontonasal. Overlapping features among craniosynostosis syndromes, phenotypic heterogeneity even within the same syndrome, especially in the case of Muenke syndrome, and inadequate clinical evaluation can lead to misdiagnosis, which molecular testing can help clarify.

Objective:

The aim of this study is to investigate the underlying genetic cause in 46 patients with syndromic or nonsyndromic craniosynostosis by direct sequencing and/or microdeletion/microduplication analysis of the FGFR1-3, TWIST1, and EFNB1 genes.

Results:

Genetic analysis identified 3 novel mutations, c.413T>C - p.(Leu138Pro) [p.(L138P)] in TWIST1, the previously reported c.373G>A - p.(Glu125Lys) [p.(E125K)], and c.717dupA - p.(Leu240IlefsTer79) [p.(L240fs)] mutation in EFNB1 gene as well as 6 previously known mutations and a heterozygous TWIST1 gene deletion. The 2 novel mutations within EFNB1 gene arose de novo, but the novel mutation p.(L138P) within TWIST1 gene was inherited from the patient’s father, who was found to be mosaic for the mutation. To our knowledge, this is the first case of mosaicism described for TWIST1 gene.

Conclusions:

The contribution of molecular genetic analysis to the diagnosis of patients with syndromic craniosynostosis was useful because some were originally misdiagnosed. Conversely, thorough clinical evaluation can guide molecular testing and result in a correct diagnosis.
Parental Attitude Toward the Prenatal Diagnosis of Oral Cleft
Authors: Maarse Wies , Boonacker Chantal W. B. , Swanenburg de Veye Henriette F. N. , Kon Moshe , Breugem Corstiaan C. , Mink van der Molen Aebele B. , van Delden Johannes J. M.
Published: March 2018

Objectives:

The prenatal diagnosis of oral clefts (OCs) by ultrasound can pose an ethical dilemma. The purpose of this study was to obtain insight into the psychosocial and moral considerations of prospective parents concerning OCs, the burden of OCs and parents’ attitude toward possible termination of pregnancy (TOP) in order to improve counseling in the future.

Design:

Between August 2011 and August 2014, a prospective cohort questionnaire study was administered.

Setting:

Prenatal care clinic of the Wilhelmina’s Children hospital, a Tertiary Care Centre.

Participants:

Parents expecting a child with an OC.

Main Outcome Measures:

Expectation of OCs in general and attitudes toward the impact and expected burden of the OC of their child. Furthermore, parents were asked if they had considered TOP.

Results:

Most of the parents described an OC as a cosmetic disability (50.6%) or as “just a little different” (29.4%). These parents expected that the OC would not affect their own happiness and have only minor influence on the happiness of their future child. Health professionals had a considerable influence on parental opinion. A minority (6.4%, 5/85) of the respondents considered TOP, and none of the responders chose to terminate the pregnancy.

Conclusions:

This study suggests that future parents have very few negative perceptions of OC after prenatal counseling. Caregivers should be aware that their counseling is important for decision-making of parents.
Good Sound, Good Research: How Audio Quality Influences Perceptions of the Research and Researcher
Authors: Newman Eryn J. , Schwarz Norbert
Published: March 2018

Increasingly, scientific communications are recorded and made available online. While researchers carefully draft the words they use, the quality of the recording is at the mercy of technical staff. Does it make a difference? We presented identical conference talks (Experiment 1) and radio interviews from NPR’s Science Friday (Experiment 2) in high or low audio quality and asked people to evaluate the researcher and the research they presented. Despite identical content, people evaluated the research and researcher less favorably when the audio quality was low, suggesting that audio quality can influence impressions of science.