bluuebunny/crossref_metadata_2025_split huggingface dataset:
Spectrum of free-form Sudoku graphs
Authors: Abudayah Mohammad , Alomari Omar , Sander Torsten 
Published: January 2019

AbstractA free-form Sudoku puzzle is a square arrangement ofm×mcells such that the cells are partitioned intomsubsets (called blocks) of equal cardinality. The goal of the puzzle is to place integers 1, . . ,min the cells such that the numbers in every row, column and block are distinct. Represent each cell by a vertex and add edges between two vertices exactly when the corresponding cells, according to the rules, must contain different numbers. This yields the associated free-form Sudoku graph. This article studies the eigenvalues of free-form Sudoku graphs, most notably integrality. Further, we analyze the evolution of eigenvalues and eigenspaces of such graphs when the associated puzzle is subjected to a ‘blow up’ operation, which scales the cell grid including its block partition.
Do Benefit Corporations Represent a Policy Threat to Nonprofits?
Authors: Toepler Stefan 
Published: January 2019

AbstractIn the US and increasingly internationally as well, considerable efforts have been made in recent years to introduce new legal forms, such as the benefit corporation, at the local level as an additional structural option for social entrepreneurs. These efforts have been met with considerable apprehension on the part of nonprofit sector advocates, who perceive these new organizational forms as potential competition. This paper investigates whether the benefit corporation is in fact a likely competitive threat to nonprofits. Presenting the findings of an early uptake study, it reviews the early experience with the state-level introduction of the benefit corporation in Maryland, the first state to adopt the new legal form.
Assessment of radioactivity from selected soil samples from Halfa Aljadida area, Sudan
Authors: Elzain Abd-Elmoniem A. , Idriss Hajo , Mohammed Yousif Sh. , Mohamed Khidir Shaib , Mohamed Ali Mohamed Abd Elwahab , Elkhalig Mohamed Musa Saad Hasb , Salih Isam , Khatir Sam Adam , Eisa Mohammed H. , Mahmoud Sumai S. , Massoud Makin K. , Os Osman Abdallah A. , Rabih Mohammed Nour A. 
Published: January 2019

Abstract
In this research, the results of radon concentration, surface and mass exhalation rates, radium concentration, effective dose rate and the alpha index have been investigated in a number of 198 soil samples that have been collected from various residential locations of Halfa Aljadida area, Sudan. The can technique, containing CR-39 have been used. From our results, the average value of soil gas radon concentration was found to be 1.96±0.22 kBq·m−3. The average values of surface and mass exhalation rates were 1.73±0.19 Bq·m−2·h−1 and 34.79±3.87 mBq·kg−1·h−1, respectively. The radium concentration average value was 8.06±0.90 Bq·kg−1. While the average value of the effective dose rate was recorded to be 54.69±6.11 mSv·y−1. The average value of alpha index of studied samples was (4.03±0.45)×10−2. From the study, a good positive and linear correlation between radium concentration, surface and mass exhalation rates of soil samples were present. In addition to that, a positive and linear correlation between radium and radon concentrations was found. Finally, a comparison between the results and other findings was conducted and the results imply the fact that the area under consideration is safe as if the health hazard are mentioned.
Using semantic tagging to examine the American Dream and the Chinese Dream
Authors: Hou Zhide 
Published: January 2019

AbstractThis paper uses Wmatrix to generate semantic tagging to compare corpora of media representations between the American Dream and the Chinese Dream. The USAS tagger is used to assign the semantic field tags to the America Dream Corpus (ADC) and the Chinese Dream Corpus (CDC). The motivation of this study is to replicate the studies using an automated and inclusive method based on semantic tagging (Potts, A. & P. Baker. 2012. Does semantic tagging identify cultural change in British and American English?International Journal of Corpus Linguistics17(3). 295–324), and more importantly, to conduct a broad semantic categorization on both national dreams so as to uncover the cultural, social and historical similarities and/or differences. It is found that the cultural difference of the individualistic home and work association of the American Dream versus the collectivistic nation and world attributions of the Chinese Dream. The different historical stage and social-economic contexts are disclosed from the different temporal positions from time category, and the contrastive tags associated with negative representation of the American Dream and positive representation of the Chinese Dream.
Faith in fakes: Secrets, lies, and conspiracies in Umberto Eco’s writings
Authors: Rodríguez-Ferrándiz Raúl 
Published: January 2019

AbstractThis paper offers a re-reading of the works of Umberto Eco, be they academic, journalistic or literary, with apseudologictone: his desire to investigate the mechanisms of lying, and their relation with fiction, falsification, error, secrecy, and conspiracy. The study will review some of his main academic texts in the fields of semiotics, rhetoric, and aesthetics, and will make some references to his recent novels and essay compilations, as well as offer an explanation of how the evolution of his thoughts takes a pessimistic turn. The face of the lie, which initially was aesthetic consolation and consumerist delusion, and then a game of intelligence, a creative stimulus and an interpretive challenge, changes when serves the purpose of extortion, manipulation, and war. In short, it could be argued that Eco became increasingly disappointed by deceptions, and lost faith in fakes and forgeries.
Language mediated mentalization: A proposed model
Authors: Neuman Yair 
Published: January 2019

Abstract

Mentalization describes the process through which we understand the mental states of oneself and others. In this paper, I present a computational semiotic model of mentalization and illustrate it through a worked-out example. The model draws on classical semiotic ideas, such as abductive inference and hypostatic abstraction, but pours them into new ideas and tools from natural language processing, machine learning, and neural networks, to form a novel model of language-mediated-mentalization.
Evaluation of plasma VEGF and sVEGFR-1 levels in patients with diabetes mellitus receiving insulin treatment
Authors: Erturk Ismail , Sertoglu Erdim , Yesildal Fatih , Acar Ramazan , Saglam Kenan , Ozgurtas Taner 
Published: January 2019

Abstract

Background
Diabetes mellitus (DM) is a multifactorial chronic disease, in which patients need to be treated with insulin in some conditions. Capillary growth is regulated by growth factors like vascular endothelial growth factor (VEGF) and endogenous inhibitors such as the splice variant of VEGF receptor-1 (sVEGFR-1). We aimed to show the levels and the clinical significance of VEGF, sVEGFR-1 in patients with DM on insulin treatment.

Materials and methods
A total of 83 subjects consisting of patients with the diagnosis of DM (n=47) and healthy control (n=36) were included the study. Plasma levels of VEGF and sVEGFR-1, were measured using the enzyme-linked immunosorbent assay method.

Results
The average sVEGFR-1 levels of DM group was significantly higher than the control group (0.106±0.052 and 0.073±0.049, respectively; p=0.005). Significantly lower sVEGFR-1 levels were determined in patients receiving metformin vs. without metformin using (0.065±0.016 and 0.118±0.053, respectively; p=0.001).

Conclusion
This is the first study evaluating and demonstrating the importance of plasma VEGF and sVEGFR-1 levels together in DM patients receiving insulin. Using metformin may have positive effect on angiogenesis in DM. Further studies are required to understand these effects.
Repeated Incremental Workbouts Separated by 1 Hour Increase the Electromyographic Fatigue Threshold
Authors: Bremer Nate , Peoples Gavin , Hasler Brent , Litzenburg Robert , Johnson Andrew , Malek Moh H. 
Published: January 2019

Abstract
Bremer, N, Peoples, G, Hasler, B, Litzenburg, R, Johnson, A, and Malek, MH. Repeated incremental workbouts separated by 1 hour increase the electromyographic fatigue threshold. J Strength Cond Res 35(5): 1397–1402, 2021—Studies examining the influence of priming, for continuous exercise, have mainly focused on improved exercise capacity related to oxygen uptake kinetics rather than on neuromuscular fatigue of the muscle. The purpose of this study, therefore, was to determine whether or not the electromyographic fatigue threshold (EMGFT) could be modulated by having subjects perform 2 incremental tests separated by 1 hour. We hypothesized that the EMGFT determined from the second incremental test would be higher than the EMGFT determined from the first incremental test. Nine healthy college-aged men (mean ± SEM: age: 23.8 ± 0.6 years; body mass: 79.5 ± 3.3 kg; height: 1.78 ± 0.02 m) were recruited from the university population. Each subject visited the laboratory on 1 occasion and performed 2 incremental single-leg knee-extensor ergometry to voluntary fatigue separated by 1 hour. The EMGFT was determined for each trial and statistically compared using paired-samples t-test. The results indicated significant mean differences between the EMGFT for the 2 trials (trial 1: 27 ± 1 W vs. trial 2: 34 ± 2 W; p = 0.001), whereas there were no significant mean differences for maximal power output (trial 1: 53 ± 2 W vs. trial 2: 57 ± 2; p = 0.09). These findings suggest that postactivation potentiation may, in part, explain the differences in EMGFT because the exercise mode used in the current study minimizes the cardiorespiratory responses to exercise.
Effects of Combined Surfaces vs. Single-Surface Plyometric Training on Soccer Players' Physical Fitness
Authors: Ramirez-Campillo Rodrigo , Álvarez Cristian , García-Pinillos Felipe , García-Ramos Amador , Loturco Irineu , Chaabene Helmi , Granacher Urs 
Published: January 2019

Abstract
Ramirez-Campillo, R, Álvarez, C, García-Pinillos, F, García-Ramos, A, Loturco, I, Chaabene, H, and Granacher, U. Effects of combined surfaces vs. single-surface plyometric training on soccer players' physical fitness. J Strength Cond Res 34(9): 2644–2653, 2020—The aim of this study was to compare the effects of a 8-week plyometric jump training (PJT) performed on different surfaces (grass, land-dirt, sand, wood, gym mat, and tartan-track) vs. a single-surface PJT (grass) on components of physical fitness (muscle power, speed, and change-of-direction speed [CODS] tasks) and sport-specific performance (i.e., maximal kicking velocity [MKV]) in male soccer players aged 11–14 years. Athletes were randomly assigned to a combined surfaces PJT (PJTc, n = 8), a single-surface PJT (PJTs, n = 8), or an active control (CON, n = 7). Although the PJT group trained on grass, the PJTc trained on 6 different surfaces and equally distributed the total jump volume according to the surface. Pre-post tests were conducted on grass. Significant main effects of time were observed for the countermovement jump, the standing-long-jump, the 20-cm drop jump, 30-m sprint time, CODS, and MKV (all p < 0.001; d = 0.53–0.87). Group × time interactions were identified for all jump tests, MKV, 30-m sprint time, and CODS (all p < 0.001; d = 0.58–0.71) in favor of PJTc. No significant pre-post changes were observed in the CON (all p > 0.05; d = 0.07–0.1). In conclusion, PJT is effective in improving physical fitness in young soccer players when conducted in combination with regular soccer training. Although general fitness testing and PJTs were performed on grass, larger physical fitness improvements were found after PJTc. Thus, PJTc is recommended, as it provides a better overload stimulus compared with more conventional training overload (e.g., increase in training volume or intensity). Future studies still have to address the underlying physiological adaptations after PJTc.
Comparison of the Polar V800 and the Garmin Forerunner 230 to Predict V̇o 2max
Authors: Snyder Nikolas C. , Willoughby Courtney A. , Smith Bryan K. 
Published: January 2019

Abstract
Snyder, NC, Willoughby, CA, and Smith, BK. Comparison of the Polar V800 and the Garmin Forerunner 230 to predict V̇o
2max. J Strength Cond Res 35(5): 1403–1409, 2021—The purpose of this study was to compare maximal oxygen consumption (V̇o
2max) values (Amax) with predicted V̇o
2max values obtained from the Polar V800 (PV800) and the Garmin Forerunner 230 (GF230) to determine whether the accuracy of these estimates differs between sexes. The PV800 predicts V̇o
2max based on resting heart rate (HR). The GF230 predicts V̇o
2max based on a 10-minute, self-paced outdoor run. Subjects consisted of 22 women and 22 men. After a 10-minute supine rest, predicted V̇o
2max (Pmax) values from the PV800 were measured during a 5-minute supine rest. Subjects then completed a treadmill V̇o
2max test to determine Amax. Within 48 hours of obtaining Amax, individuals completed a 10-minute, self-paced outdoor run using the GF230 to predict V̇o
2max (Gmax). A 2-way (watch vs. sex) analysis of variance was used to determine whether there were differences between predicted V̇o
2max and Amax between sexes. A significant interaction between HR monitors and sex was found (p = 0.007). Follow-up analysis showed that in men, Pmax was significantly overestimated compared with Gmax (3.87 ± 1.53 ml·kg−1·min−1, p = 0.013). Bland-Altman plots revealed large random errors that ranged from 6.6 to 16.4 ml·kg−1·min−1 with the PV800 having larger errors than the GF230. The results of this study indicate that the GF230 can provide an accurate estimate of V̇o
2max in both sexes. The PV800 can provide an accurate estimate of V̇o
2max for women but not men. Estimates of V̇o
2max from the both devices should be used with caution because of the large random error associated with them.
Biophysical Follow-up of Age-Group Swimmers During a Traditional Three-Peak Preparation Program
Authors: Zacca Rodrigo , Azevedo Rui , Ramos Valdir R. , Abraldes José A. , Vilas-Boas João P. , Castro Flávio Antônio de Souza , Pyne David B. , Fernandes Ricardo J. 
Published: January 2019

Abstract
Zacca, R, Azevedo, R, Ramos, VR, Abraldes, JA, Vilas-Boas, JP, Castro, FAdS, Pyne, DB, and Fernandes, RJ. Biophysical follow-up of age-group swimmers during a traditional three-peak preparation program. J Strength Cond Res 34(9): 2585–2595, 2020—The aim of this study was to quantify changes and contributions of bioenergetic, technique, and anthropometric profiles across a traditional 3-peak swimming season. Twenty-four age-group swimmers (11 boys: 15 years 6 months ± 1 year 1 month; 13 girls: 14 years 5 months ± 10 months) of equal maturational stage were monitored through a 400-m test in front crawl (T400). Bioenergetic, technique, and anthropometric characteristics were compared before and after macrocycles I, II and III. Sex interaction was verified only for amplitude of the fast oxygen uptake component and height (moderate). Multiple linear regressions and principal component analysis were used to identify the most influential variables and the relative contribution of each domain (bioenergetics, technique, and anthropometrics) to changes in swimming performance of T400. The relative contributions for the performance of T400 after macrocycles I, II, and III were, respectively, 6, 18, and 27% for bioenergetics, 88, 69, and 54% for technique, and 6, 13, and 20% for anthropometrics. Technique was the biggest contributor (71%) for changes in the performance of T400 over the training season, followed by bioenergetics (17%) and anthropometrics (12%). Technique played the main role during the competitive season, regardless of gradual increase in the contribution of bioenergetics and anthropometrics. Despite that, bioenergetics and technique are closely connected, thus a powerful and endurable metabolic base and cannot be overlooked. Changes and contribution of bioenergetics, technique, and anthropometrics on age-group swimmers' performance over a traditional 3-peak swimming season could be described by the T400 swimming test, providing a comprehensive biophysical overview of the main contributors to swimming performance.
Repeatability and Specificity of Eccentric Force Output and the Implications for Eccentric Training Load Prescription
Authors: Harden Mellissa , Wolf Alex , Haff G. Gregory , Hicks Kirsty M. , Howatson Glyn 
Published: January 2019

Abstract
Harden, M, Wolf, A, Haff, GG, Hicks, KM, and Howatson, G. Repeatability and specificity of eccentric force output and the implications for eccentric training load prescription. J Strength Cond Res 33(3): 676–683, 2019—Prescribing supramaximal eccentric (ECC) loads based on repetition maximum, isometric (ISO), or concentric-only (CON) strength overlooks the possibility that individuals have a different tolerance for ECC exercise. To inform the prescription of ECC training regimes, this study implemented a test battery that included maximal accentuated-eccentric (ECC+), traditional coupled eccentric-concentric (TRAD), and 2 ISO conditions (90 and 120° knee-joint angle [ISO90 and ISO120, respectively]). The study aimed to determine the repeatability and specificity of ECC+ force output and assess the methodological accuracy when using nonspecific measures of strength to prescribe ECC+ training loads. Results show that the test battery was repeatable (p > 0.05, intraclass correlation coefficient >0.95, coefficient of variation: <5.8%) and force output was specific to each task; ECC+ (4,034 ± 592 N) was higher (p < 0.001) than ISO90 (3,122 ± 579 N) and TRAD (3,574 ± 581 N), but less (p < 0.001) than ISO120 (6,285 ± 1,546 N). Although estimations of ECC+ strength were not different from observed ECC+ values (p > 0.05), estimations were associated with up to a 7% error. This investigation confirms that force output is task-specific; therefore, prescribing ECC loads based on strength during another task will likely lead to discrepancies in intended and actual ECC exercise intensity. Consequently, using an ECC-specific approach to assess ECC strength qualities will provide a more accurate platform to prescribe individualized ECC training programs and a more definitive evaluation of ECC strength.
Lower-Load is More Effective Than Higher-Load Resistance Training in Increasing Muscle Mass in Young Women
Authors: Franco Cristiane Maria de Castro , Carneiro Marcelo Augusto da Silva , Alves Lucas Tatsuo Horinouchi , Júnior Gersiel Nascimento de Oliveira , de Sousa Jairo de Freitas Rodrigues , Orsatti Fábio Lera 
Published: January 2019

Abstract
Franco, CMdC, Carneiro, MAdS, Alves, LTH, Júnior, GNdO, de Sousa, JdFR, and Orsatti, FL. Lower-load is more effective than higher-load resistance training in increasing muscle mass in young women. J Strength Cond Res 33(7S): S152–S158, 2019—This study was designed to investigate the impact of load (higher vs. lower) performed until or close to volitional fatigue on muscle strength (MS) and fat and bone-free lean mass (FBFM) in young women. To do this, 32 women performed resistance training (RT) in 1 of 2 conditions: lower-load RT (LL; n = 14, age = 24.3 ± 4.8 years and body mass index [BMI] = 23.3 ± 2.8 kg·m−2) and higher-load RT (HL; n = 18, age = 23.0 ± 3.3 years and BMI = 22.4 ± 3.3 kg·m−2). Leg FBFM (DXA) and MS (1 repetition maximum—unilateral leg extension [LE]) were evaluated before and after 9 weeks (the first week was used for familiarization) of RT. Both groups performed 3 unilateral exercises (LE, leg curl, and leg press), 3 sets per exercise, 60–90 seconds of rest between sets, 2 days per week. In the LL group, the loads used in the exercises were the loads necessary to perform 30–35 repetitions in the first set. For the HL group, the loads used were the loads necessary to perform 8–10 repetitions in the first set. The LL group showed higher RT volume than the HL. Both groups showed leg muscle mass gains (p < 0.05). However, the LL group was better [p = 0.032 and effect size (eta2 = 0.14 [large]) than the HL group in leg FBFM gains (LL = 0.3 kg [IC 95%: 0.4 kg; 0.2 kg] and HL = 0.1 kg [IC 95%: 0.2 kg; 0.0 kg]). Both groups showed MS gains, without any difference between them (LL = 3.4 kg [IC 95%: 4.4 kg; 2.5 kg] and HL = 4.2 kg [IC 95%: 5.1 kg; 3.3 kg]; p = 0.239). Thus, lower-load RT is more effective than higher-load RT in increasing FBFM, but not MS in novice young women.
Inspiratory Muscle Warm-up Improves 3,200-m Running Performance in Distance Runners
Authors: Barnes Kyle R. , Ludge Allie R. 
Published: January 2019

Abstract
Barnes, KR and Ludge, AR. Inspiratory muscle warm-up improves 3,200-m running performance in distance runners. J Strength Cond Res 35(6): 1739–1747, 2021—This study examined the effects of an inspiratory muscle exercise as part of a warm-up (IMW) using a resisted breathing trainer on running performance. In a randomized crossover design, 17 trained distance runners completed two 3,200-m performance trials on separate days, preceded by 2 different warm-up procedures: IMW or sham IMW (CON). In each condition, subjects performed 30 breaths against either 50% of each athlete's peak strength (IMW) or 30 slow protracted breaths against negligible resistance (CON). Perceived race readiness and inspiratory muscle strength, flow, power, and volume were measured before and after each warm-up. Heart rate (HR), rating of perceived exertion (RPE) and dyspnea (RPD), and expired gases were collected during each trial. A 3,200-m run performance was 2.8% ± 1.5% (20.4-second) faster after IMW (effect size [ES] = 0.37, p = 0.02). After each warm-up condition, there was as small effect on peak inspiratory strength (6.6 ± 4.8%, ES = 0.22, p = 0.02), flow (5.2 ± 4.4%, ES = 0.20, p = 0.03), power (17.6 ± 16.7%, ES = 0.22, p = 0.04), and volume (6.7 ± 6.3%, ES = 0.24, p = 0.01) after IMW compared with CON. There were no differences in HR, minute volume, peak V̇o
2, or V̇o
2 at each 800-m interval between conditions (ES ≤ 0.13, p > 0.17). There were small differences in RPE at 800 m and 1,600 m (ES = 0.32, p = 0.17; ES = 0.21, p = 0.38, respectively), but no difference at the last 1,600 m (p = 1.0). There was a moderate positive effect on RPD (ES = 0.81, p < 0.001) and race readiness (ES = 0.76, p < 0.01) after IMW. Overall, the data suggest that IMW improves 3,200-m performance because of enhancements in inspiratory muscle function characteristics and reduction in dyspnea.