bluuebunny/crossref_metadata_2025_split huggingface dataset:
How To Maintain Maximal Straight Path Running Speed on a Curved Path in Sprint Events
Authors: Ohnuma Hayato , Tachi Masanobu , Kumano Akihito , Hirano Yuichi 
Published: June 2018

Abstract
This study aims to clarify the ideal technique for running on a curved path during sprinting events. Participants were twelve male track and field athletes including long jumpers and sprinters. The participants performed a 60-m sprint with maximal effort on straight and curved paths. Participants were divided into “good curve runners” and “poor curve runners” according to the curved path running speed relative to that of the straight path. Kinematic variables and ground reaction forces (GRFs) were registered and compared between the groups and paths. The running speed, step length, and flight distance of the outside leg on the curved path were lower than on the straight path only in poor curve runners. The medial-lateral GRF and impulse showed an increase during curved path running for both groups. However, the maximum posterior GRF and impulse decreased only in poor curve runners. The ideal technique for running on a curved path is to maintain the same kinematics and kinetics in the sagittal plane as on a straight path.
A Fast and Robust Way to Estimate Overlap of Niches, and Draw Inference
Authors: Parkinson Judith H. , Kutil Raoul , Kuppler Jonas , Junker Robert R. , Trutschnig Wolfgang , Bathke Arne C. 
Published: June 2018

Abstract
The problem of quantifying the overlap of Hutchinsonian niches has received much attention lately, in particular in quantitative ecology, from where it also originates. However, the niche concept has the potential to also be useful in many other application areas, as for example in economics. We are presenting a fully nonparametric, robust solution to this problem, along with exact shortcut formulas based on rank-statistics, and with a rather intuitive probabilistic interpretation. Furthermore, by deriving the asymptotic sampling distribution of the estimators, we are proposing the first asymptotically valid inference method, providing confidence intervals for the niche overlap. The theoretical considerations are supplemented by simulation studies and a real data example.
Stress-Dependent Perforation in Carbonate Rocks: An Experimental Study
Authors: Norouzi Peyman , Hashemolhosseini Hamid , Baghbanan Alireza 
Published: June 2018

Summary
Perforation with shaped charges as a conventional well-completion technique is widely used in the oil industry. Different phenomena influence perforation performance and depth of penetration (DOP). The authors examined the effect of in-situ stresses and shot density on DOP and created fracture patterns in concrete and limestone samples with surface and polyaxial/triaxial-stress-loading conditions. To achieve this aim, we designed and developed a polyaxial-perforation test machine. We optimized the number of experimental tests using the Taguchi-design test method. The Taguchi orthogonal scheme is well-known and is a highly recommended method to optimize the number of required experiments (Taguchi 1990; Ross 1996; Jeyapaul et al. 2005; Gupta et al. 2014). Our experimental setup resembles vertical wells in the strike/slip-faulting regions and horizontal wells in the reverse-faulting regions. The results show that DOP is more controlled by stresses normal to the shooting direction in polyaxial tests than by the stress in the direction of penetration. DOP and the maximum hole diameter from the second charge had a direct relation with shot density. The DOP observed in polyaxial-loading conditions was a little lower than in the triaxial-loading mode, where the mean value of stresses normal to the shooting direction in the polyaxial tests was the same as the horizontal stresses in the triaxial tests. In both surface and triaxial-loading conditions, the patterns of perforation fractures were radial and regular, whereas the cracks created were oriented along the direction of maximum horizontal stress in the polyaxial tests.
The Portable Gas Analyzer Based on the Spectrum
Authors: Shuping Xu , Pei Xu , Qiyu Dong , Xiaohui Su 
Published: June 2018

Abstract
It is a problem of spectra analysis of flue gas that how to separate and calculate the concentration of different kinds of gas from continuous mixed gas absorption spectrum signal. So based on experimental data, a new iteration of the circular algorithm is put forward on the basis of Lambert-Beer’s law. This algorithm, using the superposition of the absorbance, makes data nonlinear fitting. It takes the advantages of the wavelength optimum and the circular iteration to distinguishing the gas mixture of different composition. Experimental results show that: this method can at once calculate a variety of harmful gas concentration and accuracy up to ± 3%. it has strong anti-jamming capability and is suitable for practical application of engineering.
Application of Greedy Random Adaptive Search Algorithm (GRASP) in Flight Recovery Problem
Authors: Shaochang Wang , Fei Xu , Weixia Yang , Zhe Ma 
Published: June 2018

Abstract
With the rapid growth of air transportation, capital is becoming increasingly scarce, and the abnormal situation of flight is becoming more and more serious. Irregular flights have become popular in society, and it is also a great difficulty for airlines. Flight recovery is a classic NP problem. It is of great theoretical significance and practical value to study flight restoration problem. The punctuality of the airline’s schedule is a key factor in retaining current customers and attracting new passengers. However, because the civil aviation transportation system is very complex, many reasons will cause the flight plan can not be carried out normally. Weather, air traffic flow control, airport security check, passenger’s own reasons and temporary shortage of crew cause the flight can’t be executed normally, that is, abnormal flight or flight interruption. Flight interruption will affect the normal operation of airlines. Some flights have to be cancelled or delayed, which will cause huge economic losses to airlines. Besides, the delay or cancellation of flights will cause great inconvenience to passengers and affect the reputation of airlines. The operation control and management level of abnormal flights has attracted more and more attention from domestic airlines. Optimization control and algorithm design have also become a hot topic in the research of abnormal flights in China. Based on the further understanding of the NP problem, this paper verifies the feasibility of the greedy random adaptive search algorithm GRASP algorithm in the NP problem solving process under the flight recovery problem model. According to the analysis, the resource allocation model is established to verify the shortcomings of Lagrange relaxation algorithm (LRS) in flight recovery problem. Meanwhile, the greedy random adaptive search algorithm (GRASP) is used to solve the model, and the new flight schedule is obtained. Through the experimental results, the feasibility of the algorithm is proved in the error range.
An Ensemble Learning Method for Text Classification Based on Heterogeneous Classifiers
Authors: Huimin Fan , Pengpeng Li , Yingze Zhao , Danyang Li 
Published: June 2018

Abstract
Ensemble learning can improve the accuracy of the classification algorithm and it has been widely used. Traditional ensemble learning methods include bagging, boosting and other methods, both of which are ensemble learning methods based on homogenous base classifiers, and obtain a diversity of base classifiers only through sample perturbation. However, heterogenous base classifiers tend to be more diverse, and multi-angle disturbances tend to obtain a variety of base classifiers. This paper presents a text classification ensemble learning method based on multi-angle perturbation heterogeneous base classifier, and validates the effectiveness of the algorithm through experiments.
The Research and Implementation of 3D Scene Simulation of Camouflage
Authors: Jun Yu , Zhonghua Li , Zhiyi Hu , Jun Dai 
Published: June 2018

Abstract
Aiming at the problems in the camouflage design of military engineering, such as strong subjectivity and unpredictable camouflage effect, etc. We propose a 3D camouflage scene simulation method based on MFC and Vega Prime technologies. On the basis of real DEM data in an area in American, we use 3D visualization technique to create terrain model and ground object model. The camouflage pattern is applied to the surface of the model by texture mapping technology, and real-time rendering is used. The engine Vega Prime API renders the model and creates a camouflage simulation scenario. The result shows that, the virtual scene of camouflage can be generated by using visual simulation technology, this helps to test the effect of the camouflage pattern.
A Searchable Re-encryption Storage Method in Cloud Environment
Authors: Hui Wang , Bo Hong , Junyong Tang 
Published: June 2018

Abstract
Traditional cloud storage systems do not adapt well to different application environment and does not guarantee the integrity and confidentiality of cloud data. In order to solve the problems brought by the hysteretic and density in the cloud storage system,A Searchable Re-encryption Storage Method (SReCSM) is proposed in this paper. The central idea of the SReCSM is to generate a re-encryption key and decrypte while the keyword matched. Simulation results show that SReCSM introduced in this paper has better security and reliability.
Implementation of a cost-effective fuzzy MPPT controller on the Arduino board
Authors: Algarín Carlos Robles , Fuentes Roberto Liñán , Castro Adalberto Ospino 
Published: June 2018

Abstract
This paper presents the implementation of a fuzzy controller on the Arduino Mega board, for tracking the maximum power point of a photovoltaic (PV) module; using low cost materials. A dc–dc converter that incorporates a driver circuit to control the turning on and off of the Mosfet transistor was designed. The controller was evaluated in a PV system consisting of a 65 W PV module and a 12 V/55Ah battery. The results demonstrate the superiority of the fuzzy controller compared to the traditional P&O algorithm, in terms of efficiency and oscillations around the operating point.
Prevalence and characteristics of three subtypes of dating violence among Danish seventh-grade students
Authors: Karsberg Sidsel , Bramsen Rikke Holm , Lasgaard Mathias , Elklit Ask 
Published: June 2018

Abstract
Background: A high prevalence of adolescent dating violence (ADV) has been documented in recent years. However, the majority of ADV studies have been conducted in North America and moreover, ADV studies have primarily focused on high school or college populations.
Objective: To investigate victimization and perpetration of ADV and related gender differences in a sample of Danish seventh-grade students.
Method: In total, 2934 seventh-grade students (M = 3.5, SD = 0.5) filled out questionnaires at school.
Results: The prevalence of victimization of emotional, physical and sexual ADV was 32.2%, 11.2% and 10.6%, and the prevalence of perpetration of emotional, physical and sexual ADV was 20.6%, 6% and 2.1%. One out of five students reported both victimization and perpetration of one of the three ADV types and 14.3% and 6% reported multiple forms of ADV victimization and perpetration respectively. Moreover, gender differences in the prevalence of ADV and the co-occurrence of ADV victimization and perpetration were identified.
Conclusion: The present study highlights that a large proportion of Danish seventh-grade students are experiencing ADV, and that ADV preventive programs are relevant already in early adolescence. Based on the high proportion of students reporting co-occurrence of victimization and perpetration experiences, comprehensive preventive programs that focus on both victimization and perpetration experiences and the transmission of violence are recommended.
IMPROVED ROTATION PATTERNS USING TWO AUXILIARY VARIABLES IN SUCCESSIVE SAMPLING
Authors: Karna Jaishree Prabha , Nath Dilip Chandra 
Published: June 2018

Abstract
The present paper emphasizes the role of two auxiliary variables on both the occasions to improve the precision of estimates at the current (second) occasion in two-occasion successive sampling. Information on two auxiliary variables, which are positively correlated with the study variable, has been used with the aid of exponential type structures and an efficient estimation procedure of population mean on the current (second) occasion has been suggested. The behaviour of the proposed estimator has been studied and compared with the sample mean estimator, when there is no matching from the previous occasion and natural successive sampling estimator, which is a linear combination of the means of the matched and unmatched portions of the sample at the current (second) occasion. Optimal replacement strategy is also discussed. The concluding remarks are discussed justifying utility of the proposed sampling scheme. The results have been well supported analytically as well as empirically by using real life data.
POWER ISHITA DISTRIBUTION AND ITS APPLICATION TO MODEL LIFETIME DATA
Authors: Shukla Kamlesh Kumar , Shanker Rama 
Published: June 2018

Abstract
A study on two-parameter power Ishita distribution (PID), of which Ishita distribution introduced by Shanker and Shukla (2017 a) is a special case, has been carried out and its important statistical properties including shapes of the density, moments, skewness and kurtosis measures, hazard rate function, and stochastic ordering have been discussed. The maximum likelihood estimation has been discussed for estimating its parameters. An application of the distribution has been explained with a real lifetime data from engineering, and its goodness of fit shows better fit over two-parameter power Akash distribution (PAD), two-parameter power Lindley distribution (PlD) and one-parameter Ishita, Akash, Lindley and exponential distributions.
Adaptative strategy to mitigate impacts of repetitive flooding of residents in Thailand's Ayutthaya province
Authors: Thanvisitthpon Nawhath 
Published: June 2018

Abstract
This research investigates the socio-economic, behavioral, and psychological consequences of repetitive flooding on the residents of Ayutthaya's four flood-prone districts. The study also examines the individual-level adaptative strategies adopted by the local residents to coexist with the flooding. The findings revealed several challenges encountered by the flooded households. In addition, most of the respondents expressed a preference to live out the floods in their residences rather than relocating to a makeshift shelter. The ability to live through the floods was largely attributable to the architecture of their residences whereby the houses are raised a few meters above the ground with the living quarter on the upper level, which is the most prominent adaptative strategy. Other adaptative strategies included, e.g., the ownership of a flat-bottom boat and pre-flood stocking-up on basic necessities. Furthermore, in light of the residents’ preference to live out the repetitive flooding, this research also proposes a simple means to enhance the effectiveness of the localized flood relief efforts.
Beyond Profits: The Rise of Dual-Purpose Organizations and Its Consequences for Disclosure
Authors: Arya Anil , Mittendorf Brian , Ramanan Ram N. V. 
Published: June 2018

ABSTRACT
Organizations with a mission that extends “beyond profit” to achieve broader objectives are becoming increasingly common. This paper studies such hybrid entities—firms that value the profits they generate, as well as the utility they provide to customers—and details their implications for industry disclosure practices. The findings demonstrate that disclosure incentives are perturbed not just from being a hybrid entity, but also from competing with such entities. Accounting for both competitive and disclosure effects, the paper then assesses the circumstances under which a hybrid firm is economically viable and derives the ensuing equilibrium industry composition. As such, we show that the presence of firms with objectives beyond profit can be an endogenous characteristic of many industries.
Investigation of the Accuracy of 18 Marketed Blood Glucose Monitors
Authors: Klonoff David C. , Parkes Joan Lee , Kovatchev Boris P. , Kerr David , Bevier Wendy C. , Brazg Ronald L. , Christiansen Mark , Bailey Timothy S. , Nichols James H. , Kohn Michael A. 
Published: June 2018

OBJECTIVE
Cleared blood glucose monitors (BGMs) for personal use may not always deliver levels of accuracy currently specified by international and U.S. regulatory bodies. This study’s objective was to assess the accuracy of 18 such systems cleared by the U.S. Food and Drug Administration representing approximately 90% of commercially available systems used from 2013 to 2015.

RESEARCH DESIGN AND METHODS
A total of 1,035 subjects were recruited to have a capillary blood glucose (BG) level measured on six different systems and a reference capillary sample prepared for plasma testing at a reference laboratory. Products were obtained from consumer outlets and tested in three triple-blinded studies. Each of the three participating clinical sites tested a different set of six systems for each of the three studies in a round-robin. In each study, on average, a BGM was tested on 115 subjects. A compliant BG result was defined as within 15% of a reference plasma value (for BG ≥100 mg/dL [5.55 mmol/L]) or within 15 mg/dL (0.83 mmol/L) (for BG &lt;100 mg/dL [5.55 mmol/L]). The proportion of compliant readings in each study was compared against a predetermined accuracy standard similar to, but more lenient than, current regulatory standards. Other metrics of accuracy included the overall compliance proportion; the proportion of extreme outlier readings differing from the reference value by &gt;20%; modified Bland-Altman analysis including average bias, coefficient of variation, and 95% limits of agreement; and proportion of readings with no clinical risk as determined by the Surveillance Error Grid.

RESULTS
The different accuracy metrics produced almost identical BGM rankings. Six of the 18 systems met the predetermined accuracy standard in all three studies, 5 systems met it in two studies, and 3 met it in one study. Four BGMs did not meet the accuracy standard in any of the three studies.

CONCLUSIONS
Cleared BGMs do not always meet the level of analytical accuracy currently required for regulatory clearance. This information could assist patients, professionals, and payers in choosing products and regulators in evaluating postclearance performance.
Social Network Characteristics Are Associated With Type 2 Diabetes Complications: The Maastricht Study
Authors: Brinkhues Stephanie , Dukers-Muijrers Nicole H.T.M. , Hoebe Christian J.P.A. , van der Kallen Carla J.H. , Koster Annemarie , Henry Ronald M.A. , Stehouwer Coen D.A. , Savelkoul Paul H.M. , Schaper Nicolaas C. , Schram Miranda T. 
Published: June 2018

OBJECTIVE
The relation between clinical complications and social network characteristics in type 2 diabetes mellitus (T2DM) has hardly been studied. Therefore, we examined the associations of social network characteristics with macro- and microvascular complications in T2DM and investigated whether these associations were independent of glycemic control, quality of life, and well-known cardiovascular risk factors.

RESEARCH DESIGN AND METHODS
Participants with T2DM originated from the Maastricht Study, a population-based cohort study (n = 797, mean age 62.7 ± 7.6 years, 31% female). Social network characteristics were assessed through a name generator questionnaire. Diabetes status was determined by an oral glucose tolerance test. Macro- and microvascular complications were defined as a history of cardiovascular disease and the presence of impaired vibratory sense and/or retinopathy and/or albuminuria, respectively. We assessed cross-sectional associations of social network characteristics with macro- and microvascular complications by use of logistic regression adjusted for age, HbA1c, quality of life, and cardiovascular risk factors, stratified for sex.

RESULTS
A smaller network size, higher percentages of family members, and lower percentages of friends were independently associated with macrovascular complications in both men and women. A smaller network size and less informational support were independently associated with microvascular complications in women, but not in men.

CONCLUSIONS
This study shows that social network characteristics were associated with macro- and microvascular complications. Health care professionals should be aware of the association of the social network with T2DM outcomes. In the development of strategies to reduce the burden of disease, social network characteristics should be taken into account.
Public Interest Opposite the Freedom of Contractual Will in Administrative Contracts in the Republic of Albania
Authors: Spahiu Artan 
Published: June 2018

Abstract
The protection of the public interest is the main principle governing the activity regulation of the administrative bodies. This activity, traditionally, has been developed through administrative acts, as an expression of the unilateral and authoritarian willpower of public authority, which creates legal consequences. The administrative act has been and remains the most important instrument for the administration bodies to accomplish their mission, but it is no longer effective. Particularly this lack of efficiency is noticed in recent years when the development of the economy and the needs of the evergrowing society have prompted the administration to adapt its activity by making use of other mechanisms “borrowed” from private law. An important part of public activity can also be achieved through the contract as a way that brings the state closer to the private, mitigating its dominant position and leaving space for the efficiency of private activity to fulfil public engagements. Such contracts today are known as “administrative contracts” or “public contracts”. The terms mentioned above are instruments that establish legal relations, for the regulation of which the principle of public interest is opposed and competes with the principle of freedom of the contractual willpower. The regulation of these types of contracts is reached through the private law, which constitutes the general normative framework of contracts (lex generalis) even for the administrative contracts. But this general arrangement will have effect for as long as it does not contradict the imperative provisions of the specific act of public law (lex specialis), which regulates the administrative procedure for the completion of these contracts. This paper aims to bring to the spotlight the way our legislation predict and regulates administrative contracts, by emphasising particularly the features of their dualistic nature. The coexistence and competition of the principles of the freedom of contractual willpower and the protection of the public interest, evidenced in administrative contracts, is presented in this paper through the legal analysis of the Albanian legal framework which regulates these contracts. Under the terms when the role of the state in providing public services tends to increase and our legislation aims the harmonization in accord with the European legislation, it is necessary to improve the administrative contract regulation and extend its scope of action.