bluuebunny/crossref_metadata_2025_split huggingface dataset:
Online Resource Allocation with Limited Flexibility
Authors: Asadpour Arash , Wang Xuan , Zhang Jiawei 
Published: September 2019

We consider a class of online resource-allocation problems in which there are n types of resources with limited initial inventory and n demand classes. The resources are flexible in that each type of resource can serve more than one demand class. In this paper, we focus on a special class of structures with limited flexibility, the long-chain design, which was proposed by Jordan and Graves [Jordan WC, Graves SC (1995) Principles on the benefits of manufacturing process flexibility. Management Sci. 41(4):577–594.] and has been an important concept in the design of sparse flexible processes. We study the long-chain design in an online stochastic environment in which the requests are drawn repeatedly and independently from a nonstationary probability distribution over the different demand classes. Also, the decision on how to address each request must be made immediately upon its arrival. We show the effectiveness of the long-chain design in mitigating supply–demand mismatch under a simple myopic online allocation policy. In particular, we provide an upper bound on the expected total number of lost sales that is irrespective of how large the market size is. This paper was accepted by Yinyu Ye, optimization.
INTERNACIONALIZAÇÃO DE ESTUDO: ESTRATÉGIA DE CLASSES MÉDIAS INTELECTUALIZADAS - CAMPO GRANDE/MS
Authors: Souza Solange Bertozi de , Assis Jacira Helena do Valle Pereira 
Published: September 2019

Este artigo trata da internacionalização de estudos usada como estratégia educacional de famílias de classes médias intelectualizadas de Campo Grande-MS. O objetivo é compreender se essas famílias buscam uma formação intelectual internacional. A teoria remete a Bourdieu e interlocutores, foi feita revisão bibliográfica, aplicação de entrevistas semiestruturadas com docentes universitários e seus filhos, que fizeram intercâmbio internacional, estudaram em escola bilíngue ou em cursos livres de línguas. Os resultados mostraram que a internacionalização de estudos é considerada uma estratégia educacional e na análise identificou-se que ela traz vantagens a quem pode ter acesso o maior desafio é fazer com que possa ser utilizada por toda a população brasileira, sem que haja distinções. Abstract:This article deals with the internationalization of studies used as an educational strategy for intellectualized middle classes families in Campo Grande-MS. The aim is to understand if these families seek an international intellectual formation. The theory refers to Bourdieu, a bibliographical review was carried out, the application of semi-structured interviews with university professors and their children, who made international exchange, studied in bilingual school or in language-free courses. The results showed that the internationalization of studies is considered an educational strategy and in the analysis it was identified that it brings advantages to those who can have access, the biggest challenge is to make it be used by the entire Brazilian population. Resumen: Este artículo trata de la internacionalización de estudios usada como estrategia educativa de familias de clases medias intelectualizadas de Campo Grande-MS. El objetivo es comprender si esas familias buscan una formación internacional. La teoría remite a Bourdieu, se realizó una revisión bibliográfica, aplicación de entrevistas semiestructuradas con docentes universitarios y sus hijos, que hicieron intercambio internacional, estudiaron en escuela bilingüe o en cursos libres de lenguas. Los resultados mostraron que la internacionalización de estudios es considerada una estrategia educativa y en el análisis se identificó que ella trae ventajas a quien puede tener acceso, el mayor desafío es hacer que pueda ser utilizada por toda la población brasileña.
Mesenteric Venous Thrombosis Masquerading as Small Bowel Obstruction
Authors: Al-Taee Ahmad , Ahmed Zarir , Dhedhi Adam , Giacaman Mike 
Published: September 2019

ABSTRACT
Mesenteric venous thrombosis (MVT) is an uncommon, but increasingly recognized, cause of intestinal ischemia. Presenting signs and symptoms are nonspecific, and diagnosis requires a high index of suspicion. We present the case of a 33-year-old woman who was transferred to our hospital for the management of a jejunal bezoar resulting in small bowel obstruction. She was found to have MVT that was complicated by intestinal infarction and perforation. This case emphasizes the need to consider MVT in the differential diagnosis of small bowel obstruction, as earlier diagnosis and treatment can prevent complications and improve outcomes.
Locations of Lagrangian points and periodic orbits around triangular points in the photo gravitational elliptic restricted three-body problem with oblateness
Authors: Johnson Ancy , Krishan Sharma Ram 
Published: September 2019

Locations of the Lagrangian points are computed and periodic orbits are studied around the triangular points in the photogravitational elliptic restricted three-body problem (ER3BP) by considering the more massive primary as the source of radiation and smaller primary as an oblate spheroid. A new mean motion taken from Sharma et al. [13] is used to study the effect of radiation pressure and oblateness of the primaries. The critical mass parameter Â that bifurcates periodic orbits from non-periodic orbits tends to reduce with radiation pressure and oblateness. The transition curves defining stable region of orbits are drawn for different values of radiation pressure and oblateness using the analytical method of Bennet [14]. Tadpole orbits with long- and short- periodic oscillations are obtained for Sun-Jupiter and Sun-Saturn systems.Â Â
On the asymptotic covariance of the multivariate empirical copula process
Authors: Genest Christian , Mesfioui Mhamed , Nešlehová Johanna G. 
Published: September 2019

Abstract
Genest and Segers (2010) gave conditions under which the empirical copula process associated with a random sample from a bivariate continuous distribution has a smaller asymptotic covariance than the standard empirical process based on a random sample from the underlying copula. An extension of this result to the multivariate case is provided.
Shoulder Flexion Torque Is Augmented by a Volitional Abdominal Isometric Contraction
Authors: Cacolice Paul A. , Carcia Christopher R. , Scibek Jason S. 
Published: September 2019

Abstract
Cacolice, PA, Carcia, CR, and Scibek, JS. Shoulder flexion torque is augmented by a volitional abdominal isometric contraction. J Strength Cond Res 35(4): 920–923, 2021—A stable core provides a solid base to facilitate effective extremity function. It is unclear whether an individual is able to produce a greater amount of upper extremity torque while performing a volitional core contraction when compared with the independent contraction that occurs subconsciously. Therefore, the purpose of this study was to determine whether peak shoulder flexion torque values were different with and without a concurrent volitional core isometric contraction. Thirty healthy, recreationally active college-aged students participated. Surface electromyography from the rectus abdominis (RA) was captured using a telemetry system interfaced with a software acquisition system and personal computer. In a counterbalanced alternating order, subjects completed 3 trials of maximal isometric shoulder flexion at 90° with and without a volitional abdominal contraction. Percent activation of the RA was greater when subjects volitionally contracted their core (15.8 ± 12.7%) compared with the subconscious contracted condition (6.3 ± 4.8%) (p ≤ 0.001). Isometric shoulder flexion peak torque was greater when the core was actively contracted (44.6 ± 18.9 N × m) compared with when the core was recruited subconsciously (30.7 ± 15.7 N × m) (p ≤ 0.001). These findings suggest the clinician should encourage the individual to activate their core musculature when performing upper extremity strength activities.
Squat and Bench Press Force-Velocity Profiling in Male and Female Adolescent Rugby Players
Authors: Alonso-Aubin Diego A. , Chulvi-Medrano Iván , Cortell-Tormo Juan M. , Picón-Martínez Moisés , Rial Rebullido Tamara , Faigenbaum Avery D. 
Published: September 2019

Abstract
Alonso-Aubin, DA, Chulvi-Medrano, I, Cortell-Tormo, JM, Picón-Martínez, M, Rial-Rebullido, T, and Faigenbaum, AD. Squat and bench press force-velocity profiling in male and female adolescent rugby players. J Strength Cond Res 35(2S): S44–S50, 2021—Power development is critical for enhancing rugby performance because there is a close relationship between power and sport-specific skills. The aim of this study was to examine the force-velocity profiling generated by adolescent rugby players in the squat and bench press exercises and to compare sex-related differences. Subjects were 46 men (age: 14.48 ± 1.31 years; body height: 1.65 ± 0.09 m; and body mass: 58.07 ± 13.01 kg) and 41 women (age: 14.93 ± 2.76 years; body height: 1.63 ± 0.12 m; and body mass: 59.23 ± 12.66 kg) who were recruited from a national amateur rugby league team. Maximal strength, power, and velocity were assessed on the squat and bench press exercises using a Smith Machine and a linear power transducer with intensities ranging from 40 to 80% 1 repetition maximum (1RM) on the squat and 50–80% 1RM on the bench press. 1 repetition maximum squat and bench press performance were 104.26 ± 30.83 and 46.97 ± 13.59 kg, respectively, for men and 115.17 ± 41.42 and 45.85 ± 16.71 kg, respectively, for women. The maximum squat power results for men and women were 521.91 ± 298.75 and 591.26 ± 352.69 W, respectively, and the maximum bench press power results for men and women were 190.26 ± 150.54 and 326.16 ± 195.57 W, respectively. Significant sex-related differences (p < 0.001) were found on the squat exercise for maximum (40%), mean (40–50%), and time to maximum velocities (40–80%) as well as time to maximum power (80%). On the bench press exercise, significant sex-related differences (p < 0.001) were found for power and time to maximum velocity (40%-60%-70%-80%). These results may aid in the design of strength and conditioning programs for adolescent rugby players by targeting training prescriptions toward enhancing strength or velocity.
Training Prescription Guided by Heart Rate Variability Vs. Block Periodization in Well-Trained Cyclists
Authors: Javaloyes Alejandro , Sarabia Jose M. , Lamberts Robert P. , Plews Daniel , Moya-Ramon Manuel 
Published: September 2019

Abstract
Javaloyes, A, Sarabia, JM, Lamberts, RP, Plews, D, and Moya-Ramon, M. Training prescription guided by heart rate variability vs. block periodization in well-trained cyclists. J Strength Cond Res 34(6): 1511–1518, 2020—Predefined training programs are common place when prescribing training. Within predefined training, block periodization (BP) has emerged as a popular methodology because of its benefits. Heart rate variability (HRV) has been proposed as an effective tool for prescribing training. The aim of this study is to examine the effect of HRV-guided training against BP in road cycling. Twenty well-trained cyclists participated in this study. After a preliminary baseline period to establish their resting HRV, cyclists were divided into 2 groups: an HRV-guided group and a BP group, and they completed 8 training weeks. Cyclists completed 3 evaluations weeks, before and after each period. During the evaluation weeks, cyclists performed: (a) a graded exercise test to assess V̇o
2max, peak power output (PPO), and ventilatory thresholds with their corresponding power output (VT1, VT2, WVT1, and WVT2, respectively) and (b) a 40-minute simulated time-trial (40 TT). The HRV-guided group improved V̇o
2max (p = 0.03), PPO (p = 0.01), WVT2 (p = 0.02), WVT1 (p = 0.01), and 40 TT (p = 0.04). The BP group improved WVT2 (p = 0.02). Between-group fitness and performance were similar after the study. The HRV-guided training could lead to a better timing in training prescription than BP in road cycling.
Pedal to the Metal: Velocity and Power in High-Level Golfers
Authors: Parker James , Lundgren Lina E. 
Published: September 2019

Abstract
Parker, J, and Lundgren, LE. Pedal to the metal: Velocity and power in high-level golfers. J Strength Cond Res 35(12): 3425–3431, 2021—In most rotational power assessments, discrete variables are used for subsequent examination; however, movements are continuous, and data can be collected in time series. The purpose of this investigation was to examine the velocity- and power-time series characteristics of a standing rotation test and identify relationships with golf performance. Thirty-one golfers performed a golf-specific rotation test (GSRT) with 3 different resistances (6, 10, and 14 kg) in a robotic engine system. Time series of velocity and power was calculated from the raw data, and each repetition was then normalized to 0–100%. Principal component analyses (PCAs) were performed on velocity and power waveforms. The PCA used an eigenvalue analysis of the data covariance matrix. The relationship between clubhead speed (CHS) and all principal components (PC) was examined using linear regression. Ten velocity parameters and 6 power parameters explained 80% of the variance in the data. For velocity, the first 2 PCs identified both magnitude and phase shift features while PCs 3–5 identified difference features. For power, the first 2 PCs identified both magnitude and phase shift features, the third PC identified a phase shift feature, and the fourth PC identified a difference feature. The highest relationship with CHS was shown for GSRT with 14 kg in PC2 for power (R
2 = 0.48, p < 0.001). The PCA of the GSRT power test could distinguish intraindividual differences, external loads, and sex-based differences. Athletes should focus on accelerating smoothly through the movement, particularly with heavier loads, and not pulling aggressively at the beginning of the rotational movement to achieve maximum power.
DrosophilaTau Negatively Regulates Translation and Olfactory Long-Term Memory, But Facilitates Footshock Habituation and Cytoskeletal Homeostasis
Authors: Papanikolopoulou Katerina , Roussou Ilianna G. , Gouzi Jean Y. , Samiotaki Martina , Panayotou George , Turin Luca , Skoulakis Efthimios M.C. 
Published: September 2019

Although the involvement of pathological tau in neurodegenerative dementias is indisputable, its physiological roles have remained elusive in part because its abrogation has been reported without overt phenotypes in mice andDrosophila. This was addressed using the recently describedDrosophila tauKOand Mi{MIC} mutants and focused on molecular and behavioral analyses. Initially, we show thatDrosophilatau (dTau) loss precipitates dynamic cytoskeletal changes in the adultDrosophilaCNS and translation upregulation. Significantly, we demonstrate for the first time distinct roles for dTau in adult mushroom body (MB)-dependent neuroplasticity as its downregulation within α′β′neurons impairs habituation. In accord with its negative regulation of translation, dTau loss specifically enhances protein synthesis-dependent long-term memory (PSD-LTM), but not anesthesia-resistant memory. In contrast, elevation of the protein in the MBs yielded premature habituation and depressed PSD-LTM. Therefore, tau loss inDrosophiladynamically alters brain cytoskeletal dynamics and profoundly affects neuronal proteostasis and plasticity.SIGNIFICANCE STATEMENTWe demonstrate that despite modest sequence divergence, theDrosophilatau (dTau) is a true vertebrate tau ortholog as it interacts with the neuronal microtubule and actin cytoskeleton. Novel physiological roles for dTau in regulation of translation, long-term memory, and footshock habituation are also revealed. These emerging insights on tau physiological functions are invaluable for understanding the molecular pathways and processes perturbed in tauopathies.
Disturbed Prefrontal Cortex Activity in the Absence of Schizophrenia-Like Behavioral Dysfunction inArc/Arg3.1Deficient Mice
Authors: Gao Xiaoyan , Grendel Jasper , Muhia Mary , Castro-Gomez Sergio , Süsens Ute , Isbrandt Dirk , Kneussel Matthias , Kuhl Dietmar , Ohana Ora 
Published: September 2019

Arc/Arg3.1, an activity regulated immediate early gene, is essential for learning and memory, synaptic plasticity, and maturation of neural networks. It has also been implicated in several neurodevelopmental disorders, including schizophrenia. Here, we used male and female constitutive and conditionalArc/Arg3.1knock-out (KO) mice to investigate the causal relationship betweenArc/Arg3.1deletion and schizophrenia-linked neurophysiological and behavioral phenotypes. Usingin vivolocal field potential recordings, we observed dampened oscillatory activity in the prefrontal cortex (PFC) of the KO and early conditional KO (early-cKO) mice, in whichArc/Arg3.1was deleted perinatally. Whole-cell patch-clamp recordings from neurons in PFC slices revealed altered synaptic properties and reduced network gain in the KO mice as possible mechanisms underlying the oscillation deficits. In contrast, we measured normal oscillatory activity in the PFC of late conditional KO (late-cKO) mice, in whichArc/Arg3.1was deleted during late postnatal development. Our data show that constitutiveArc/Arg3.1KO mice exhibit no deficit in social engagement, working memory, sensorimotor gating, native locomotor activity, and dopaminergic innervation. Moreover, adolescent social isolation, an environmental stressor, failed to induce deficits in sociability or sensorimotor gating in adult KO mice. Thus, genetic removal ofArc/Arg3.1 per sedoes not cause schizophrenia-like behavior. Prenatal or perinatal deletion ofArc/Arg3.1alters cortical network activity, however, without overtly disrupting the balance of excitation and inhibition in the brain and not promoting schizophrenia. Misregulation ofArc/Arg3.1rather than deletion could potentially tip this balance and thereby promote emergence of schizophrenia and other neuropsychiatric disorders.SIGNIFICANCE STATEMENTThe activity-regulated and memory-linked geneArc/Arg3.1has been implicated in the pathogenesis of schizophrenia, but direct evidence and a mechanistic link are still missing. The current study asks whether loss ofArc/Arg3.1can affect brain circuitry and cause schizophrenia-like symptoms in mice. The findings demonstrate that genetic deletion ofArc/Arg3.1before puberty alters synaptic function and prefrontal cortex activity. Although brain networks are disturbed, genetic deletion ofArc/Arg3.1does not cause schizophrenia-like behavior, even when combined with an environmental insult. It remains to be seen whether misregulation ofArc/Arg3.1might critically imbalance brain networks and lead to emergence of schizophrenia.
Multiple Functions of the Essential GenePpVinDrosophilaEarly Development
Authors: Liu Boyang , Sung Hung-wei , Großhans Jörg 
Published: September 2019

AbstractProtein phosphatase V (PpV) encodes the Drosophila homolog of the evolutionarily conserved Protein Phosphatase 6 (PP6). The physiological and developmental functions of PpV/PP6 have not been well characterized due to lack of a genetically defined mutant. Here, we identified a PpV non-sense mutation and describe multiple mutant phenotypes in oogenesis and early embryogenesis. Specifically, we found that the defects in chromosome segregation during nuclear cycles are related to AuroraA function, which is consistent with the interaction of PP6 and AuroraA in mammalian cells. Surprisingly, we also identified a PpV function specifically in blastoderm cell cycle but not in cell proliferation in the follicle epithelium or larval wing imaginal discs. Embryos from PpV germline clones frequently undergo an extra nuclear division cycle. By epistasis analysis, we found that PpV functions in parallel with tribbles, but independently of auroraA for the remodeling of the nuclear cycles. Taken together, this study reports novel developmental functions of PpV and provides a framework for further genetic analysis under physiological conditions.
Germ Cell Lineage Homeostasis in Drosophila Requires the Vasa RNA Helicase
Authors: Durdevic Zeljko , Ephrussi Anne 
Published: September 2019

Abstract
The conserved RNA helicase Vasa is required for germ cell development in many organisms. In Drosophila melanogaster loss of PIWI-interacting RNA pathway components, including Vasa, causes Chk2-dependent oogenesis arrest. However, whether the arrest is due to Chk2 signaling at a specific stage and whether continuous Chk2 signaling is required for the arrest is unknown. Here, we show that absence of Vasa during the germarial stages causes Chk2-dependent oogenesis arrest. Additionally, we report the age-dependent decline of the ovariole number both in flies lacking Vasa expression only in the germarium and in loss-of-function vasa mutant flies. We show that Chk2 activation exclusively in the germarium is sufficient to interrupt oogenesis and to reduce ovariole number in aging flies. Once induced in the germarium, Chk2-mediated arrest of germ cell development cannot be overcome by restoration of Vasa or by downregulation of Chk2 in the arrested egg chambers. These findings, together with the identity of Vasa-associated proteins identified in this study, demonstrate an essential role of the helicase in the germ cell lineage maintenance and indicate a function of Vasa in germline stem cell homeostasis.