bluuebunny/crossref_metadata_2025_split huggingface dataset:
Regulatory Light-Chain Phosphorylation During Weightlifting Training: Association With Postactivation Performance Enhancement
Authors: Chiu Loren Z. F. , Fry Andrew C. , Galpin Andrew J. , Salem George J. , Cabarkapa Dimitrije 
Published: September 2023

Abstract
Chiu, LZF, Fry, AC, Galpin, AJ, Salem, GJ, and Cabarkapa, D. Regulatory light-chain phosphorylation during weightlifting training: association with postactivation performance enhancement. J Strength Cond Res 37(10): e563–e568, 2023—Postactivation performance enhancement has been reported for multijoint resistance exercise, with both neural and intrinsic muscle mechanisms suggested as contributing factors. The purpose of this investigation was to examine whether regulatory light-chain (RLC) phosphorylation in a primary mover is associated with enhanced weightlifting performance. Nine male athletes performed 15 sets of 3 repetitions of a multijoint weightlifting activity (clean pull) at 85% 1 repetition maximum. Measures of performance, peak barbell velocity (PV), and average barbell power (AP) were determined by video analysis. Muscle biopsies were taken within 30–60 seconds of completion of the previous lifting set from the vastus lateralis before (PRE), during (MID), and after (POST) a training session. AP was significantly greater for sets 3, 4, and 5 compared with set 1, with large effect sizes (0.8–1.0). Increases in PV did not reach significance; however, the effect size increase for sets 3 and 4 versus set 1 was moderate (0.4). Relative change scores for AP and RLC phosphorylation were positively and negatively correlated at MID (r = 0.60; p = 0.05) and POST (r = −0.74; p = 0.01) exercise, respectively. These data suggest that RLC phosphorylation initially may be associated with postactivation performance enhancement during repeated multijoint exercise.
Research on the Effect of Density on the Outgassing Characteristics of Ceramics
Authors: Luo Yan , Wang Kuibo , Wu Xiaobin 
Published: September 2023

Abstract
In order to systematically assess the influence of the internal structure on the outgassing property, alumina ceramics with different porosity were first prepared by four sintering processes, and then their measurements of the outgassing rate and desorption gas components were performed using the throughput method. Experimental results show that when the alumina sample is exposed to vacuum for just a few hours, surface outgassing dominants and the main outgassing component is water vapor. After sufficiently long vacuum extraction, the gas inside the alumina ceramic is gradually released. In this test, the gas released from the internal structure plays a dominant role after 48 h pumping of 600 L/s. Combined with the microstructure analysis, it is further concluded that the denser the alumina structure is, the lower the vacuum outgassing rate is and the lower the partial pressure of the individual gas components is. It can also be observed that the internal structure still has some influence on the outgassing characteristics of the material, although to a slightly lower degree than the surface properties compared to previous studies.
Nonpharmacological Interventions to Reduce Sedation and General Anesthesia in Pediatric MRI: A Meta-analysis
Authors: Thestrup Jakob , Hybschmann Jane , Madsen Thurid W. , Bork Nanna E. , Sørensen Jette L. , Afshari Arash , Borgwardt Lise , Berntsen Marianne , Born Alfred Peter , Aunsholt Lise , Larsen Vibeke A. , Gjærde Line K. 
Published: September 2023

CONTEXT
Nonpharmacological strategies are increasingly used in pediatric procedures, but in pediatric MRI, sedation and general anesthesia are still commonly required.

OBJECTIVES
To evaluate the effectiveness of nonpharmacological interventions in reducing use of sedation and general anesthesia in pediatric patients undergoing MRI, and to investigate effects on scan time, image quality, and anxiety.

DATA SOURCES
We searched Ovid Medline, CINAHL, Embase, and CENTRAL from inception through October 10, 2022.

STUDY SELECTION
We included randomized controlled trials and quasi-experimental designs comparing the effect of a nonpharmacological intervention with standard care on use of sedation or general anesthesia, scan time, image quality, or child and parental anxiety among infants (&lt;2 years), children, and adolescents (2–18 years) undergoing MRI.

DATA EXTRACTION
Standardized instruments were used to extract data and assess study quality.

RESULTS
Forty-six studies were eligible for the systematic review. Limited to studies on children and adolescents, the meta-analysis included 20 studies with 33 873 patients. Intervention versus comparator analysis showed that nonpharmacological interventions were associated with reduced need for sedation and general anesthesia in the randomized control trials (risk ratio, 0.68; 95% confidence interval, 0.48–0.95; l2 = 35%) and nonrandomized studies (risk ratio, 0.58; 95% confidence interval, 0.51–0.66; l2 = 91%). The effect was largest among children aged 3 to 10 years when compared with older children and adolescents aged 11 to 18 years.

LIMITATIONS
There was substantial heterogeneity among nonrandomized studies.

CONCLUSIONS
Nonpharmacological interventions must be considered as standard procedure in infants, children, and adolescents undergoing MRI.
Formas de enfrentamento do câncer de mama: discurso de mulheres mastectomizadas
Authors: Brito Paloma Karen Holanda , Carneiro Açucena de Farias , Da Silva Raquel de Jesus Rocha , Barbalho Isabela Lunara Alves , De Lima Mariana Alexandre Gadelha , Fernandes Marcelo Costa 
Published: September 2023

Introdução: Na neoplasia de mama ocorrem inúmeras transformações na vida da pessoa acometida e de todas as pessoas próximas, sentimentos como medo, angústia e tristeza. Diante disso, a identificação dos métodos usados para enfrentar a neoplasia de mama faz-se crucial, visto que proporciona melhor vivência desse momento por parte da mulher e de todos os envolvidos.
Objetivo: Compreender as formas de enfrentamento do câncer de mama por meio do discurso de participantes de um grupo de apoio.
Metodologia: Pesquisa descritiva com abordagem qualitativa realizada com 10 mulheres que participam de um grupo geral de apoio, localizado em um município da Paraíba. Para a coleta de dados, utilizou-se entrevista semiestruturada, e como processo metodológico para a análise dos dados, o Discurso do Sujeito Coletivo.
Resultados: Foi possível a compreensão de três ideias centrais em relação às formas de enfrentamento do câncer de mama: “Ancoragem na fé e espiritualidade”; “Suporte familiar”; e “Grupo de apoio”.
Conclusão: O estudo atingiu seu objetivo de identificar as principais formas de enfrentamento do câncer de mama por mulheres mastectomizadas, podendo elucidar a importância da fé e espiritualidade, o suporte familiar e a participação em grupos de apoio por meio do discurso das participantes.
LENGUAJE INTEGRADOR EN MANUELA: UNA PROPUESTA INCÓMODA
Authors: Castro Torres Juliana 
Published: September 2023

A pesar de que fue la primera novela de gran magnitud de la Colombia independiente y de estar llena de aciertos, Manuela no tuvo un caluroso recibimiento de su primer público; tampoco ha tenido una fuerte presencia en la historia de la literatura colombiana. Uno de los aspectos más criticados de Manuela fue su lenguaje. Este artículo explora la propuesta de lenguaje de Manuela y aborda el problema de su recepción, analizando sus críticas y caracterizando su primer público lector.
Risk management in software development projects in Spain: a state of art
Authors: Fernández Sanz Luis , Bernad Silva Pedro 
Published: September 2023

Software is today a critical element in every system. The development and implementation of computer programs is influenced by many varied risks which should be managed properly. Risk management in software projects is an activity addressed in several software methodologies, but the different workgroups and organizations apply it in practice in many different ways. A preliminary study has been conducted among Spanish software professionals and developers. It reveals interest in risk management and its techniques, but it also shows that serious deficiencies as well as attitudes which do not help to this activity. These preliminary data represent a basis for a deeper and more detailed analysis of risk management practices which might lead to more effective and practical solutions.
Software for design and implementation observers of Luenberguer lineal and high gain
Authors: Posada Restrepo Norha Ligia , Osorio Cárdenas Marisol , Castrillón Hernández Fabio 
Published: September 2023

In this paper we present two software applications, one for simulation and design, and another for implementing Luenberguer Linear and High Gain observers. We show the interfaces and present a complete description of the software. The observers were designed for a system of tanks in cascade connected by a channel. We present the mathematic model proposed for this system and the changes that we made in it to ensure the compliance of theory design conditions observers. Further, we make a brief presentation over theory design of observers with us work and basic concepts for their implementation. The most relevant aspects for the programming algorithms used for simulation, design and implementation of observers are studied. The software used for platforms design was Matlab® and LabVIEW®, and report of results for implementation was made in a file, .lvm. This kind of file can process with Matlab® or Excel®.
Reconstruction of the execution times dynamics of real-time tasks by fuzzy digital filtering
Authors: Valdez Martínez Jorge Salvador , Delgado Reyes Gustavo , Guevara López Pedro , García Infante Juan Carlos 
Published: September 2023

Real-time systems (RTS) process their activities through tasks which in turn consist of a set of instances, each one of this real-time task (RTT) have six temporary constraints: arrival time, start time, execution time, end time, over time and deadline. Of these six constraints, the execution time depends directly on the software and hardware of the computer, because of that this temporary constraints varies due to external and internal factors, this variation may cause at least some instance does not satisfy the deadline, in this sense it is important to propose a model to reconstruct the behavior of the execution times for the purpose to determine the proportions of the Real-time System, propose appropriate techniques of fault tolerance and improve operating modules. Therefore in this paper, is proposed a model to reconstruct the execution times from measurements made at a program algorithm developed in the real-time operating system QNX Neutrino 6.5. This reconstruction is done by a model type autoregressive–moving-average integrated with parameter estimator constructed with a digital filtering procedure diffuse (FDD). To validate the reconstruction is used the mean square error which converges to a region close to zero and indicate that the reconstruction is good.
802.11g multilayer header compression for VoIP in remote rural contexts
Authors: Armenta Ramade Álvaro , Serrano Santoyo Arturo 
Published: September 2023

This article presents a Multilayer Header Compression scheme for VoIP packets in 802.11 wireless networks that does not require context synchronization of compressor and decompressor units. The reduction of the header size is accomplished through the static field compression of the RTP/UDP/IP headers in conjunction with an 8 bit virtual addressing in the 802.11 MAC layer. Considering the RTP/UDP/IP/MAC header fields, this scheme allows 48% header compression efficiency compared with 41% provided by the CRTP and RoHC schemes. Given that our proposal does not require context synchronization, the decompressor will regenerate the headers even in high packet loss rate conditions.
Direct power control in grid-tied photovoltaic systems
Authors: Mantilla Villalobos María Alejandra , Petit Suárez Johann Farith , Ordóñez Plata Gabriel 
Published: September 2023

This paper presents an analysis about the use of the direct power control in grid-tied photovoltaic systems. This technique is used to directly regulate the injection of instantaneous active and reactive power to the three-phase distribution network, avoiding current control loops used by traditional control strategies. The direct power control performance in photovoltaic systems is evaluated by PSIM simulation, which shows its good operation for this kind of applications. Finally, a comparative analysis is made between this controller and a traditional technique used in photovoltaic systems called voltage oriented control.
Evaluation of the air quality by using a mobile laboratory: Puente Aranda (Bogotá D.C., Colombia)
Authors: Palacio Soto Daniel Fabián , Zafra Mejía Carlos Alfonso , Rodríguez Miranda Juan Pablo 
Published: September 2023

La localidad de Puente Aranda en la ciudad de Bogotá ha sido reportada como una zona de alta contaminación atmosférica, principalmente debido a que las concentraciones de PM10 exceden los límites legislativos. Este artículo presenta una evaluación temporal y espacial de la calidad del aire en la zona industrial de la localidad de Puente Aranda mediante un laboratorio móvil de monitoreo. Los contaminantes atmosféricos medidos por el laboratorio durante el periodo de muestreo (2009/04/13-2009/12/21) fueron los siguientes: PM10, NOx, NO2, NO, SO2, CO y O3. Con respecto a la legislación colombiana, los resultados muestran que PM10 (24 horas) es el contaminante atmosférico que presenta el mayor número de excedencias durante el período de investigación (47,3%), no obstante, la evaluación de los estados excepcionales por contaminación del aire muestra que las máximas concentraciones registradas no generan un nivel de prevención; lo anterior, en contraposición con los resultados obtenidos mediante la utilización del índice de calidad del aire propuesto por la Agencia de Protección Ambiental de EE.UU. Por otro lado, los resultados sugieren una tendencia similar en el comportamiento temporal de PM10, O3 y NOx sobre la totalidad del área de investigación; es decir, probablemente por la existencia de fuentes dominantes en la zona industrial de la localidad. Finalmente, las concentraciones registradas (PM10, NO2, NOx, NO y CO) por el laboratorio móvil (zona central) son en promedio 2,30 y 2,01 veces superiores a las registradas por las estaciones móvil SDA (zona oriental) y fija SDA (zona occidental), respectivamente.
Interpreting the mexican standards for software process implementation and capacity assessment under a knowledge management approach
Authors: Flores Rios Brenda L. , Astorga Vargas María Angélica , Rodríguez Elias Oscar Mario , Ibarra Esquer Jorge Eduardo , Andrade María del Carmen 
Published: September 2023

This paper presents the involvement of Knowledge Management in Process Improvement when applying Mexican Standards for software process implementation (NMX-I-059-NYCE-2011) and process capability assessment (NMX-I-15504-NYCE-2010). We discuss and characterize the types of knowledge found in a software development company. From this characterization, we distinguish the first two levels of knowledge involved in a software process improvement project based on knowledge.
Calculation model for greenhouse gases diffuse emissions from transport. Analysis by urban design variables
Authors: Zubelzu-Mínguez Sergio , López-Díaz Alfonso Isidro , Gutiérrez-García Miguel Ángel , Blanco-Silva Fernando 
Published: September 2023

Control of diffuse emissions can be included among the most relevant actions aimed at breaking global warming. Emissions from road traffic join outstandingly in diffuse emissions. This paper studies these kind of emissions related to urban planning and proposes a model to calculate emissions, by using variables such as land use, vial length or edificability. Paper proposes nonlinear equations through emission levels for each land use can be estimated. Results show coefficient of determination of 0.644 for residential use, 0.591 for industrial, 0.592 for commercial and 0.591 for equipments. Figures that probe a higher explanatory power for model linked to residential uses.
Band-Pass filters using OSRR cells
Authors: Díaz-Pardo Iván , Suárez-Fajardo Carlos Arturo , Puerto-Leguizamón Gustavo , Zona-Ortiz Tatiana 
Published: September 2023

This paper presents the design process (including optimization and characterization) of a band-pass filter through the use of OSRR-structured meta-material cells over micro-strip substrates. The proposed design, which stems from the OSRR cell model, includes a partial ground plane etched at the bottom plane instead of, and square windows etched at the bottom plane and achieve optimization through a parametric analysis carried out over the transmission-line segments that connect the cells to the main transmission line as well as over inter-cell lines. The results yielded a resonance central frequency and a corresponding bandwidth of 2.7 GHz and 700MHz, respectively. By controlling the length of the connecting lines from the cells to the main transmission line, it is possible to tune the central frequency to a lower frequency than that of an OSRR cell. With respect to the ground plane windows version, the partial ground plane version has the capacity to add transmission zero (4.6GHz) above a/the transmission pole, which improves the rejection depth (8dB) without increasing the filter size.
Sonochemical effects on ZnO particles
Authors: Costa Bruna C. , B. Arruda Larisa , Lisboa-Filho Paulo N. 
Published: September 2023

A variety of technological applications related to oxide semiconductor-based devices have attracted great interest among the scientific community, leading to an increase in studies of these materials during the last years. Among such materials, zinc oxide (ZnO) has applications in several areas, from light-emitting diodes (LEDs) to photovoltaic devices in solar cells. Considering the physical and chemical properties conferred to these materials, the possibilities of application in technological devices depend greatly on the synthesis routes employed. Accordingly, we investigated the morphological modifications in ZnO particles when subjected to sonochemical treatment and the influence of related synthesis method parameters, such as the time and amplitude of sonication. To analyze such effects, four samples were prepared with different sonochemical treatment conditions: in two, the amplitude of sonication was kept constant while varying the time of sonication, and in the other two, the time was kept constant while varying the amplitude. The analysis of the results obtained indicated that sonochemical treatment led to superficial morphological modifications in ZnO particles. Furthermore, these modifications became more apparent when higher amplitude and longer time of sonication were employed in sample synthesis.
Managing and developing distributed research projects in software engineering by means of action-research
Authors: Pino Francisco J. , Piattini Mario , Horta Travassos Guilherme 
Published: September 2023

Participation in software research projects involving several organizations (research groups, enterprises, etc) scattered all around the world is an increasingly frequent phenomenon. The geographical distribution of the organizations entails the research projects development and management taking suitable Software Engineering research methods which must satisfy the acquired commitments as well as the new coming challenges. In thatrespect, this paper discusses how the Action-research qualitative method can be suitable for managing and developing software engineering distributed research projects. Furthermore, we propose a strategy to guide the use of Action-research in the context of distributed research projects. The application of this strategy in a research project, in which more than 10 enterprises and 27 research groups from 13 countries from Latin-America plus Portugal and Spain took part, is also illustrated. We observed that the use of the proposed strategy was able to provide the research managers with: (i) a suitable research project centralized administration, and (ii) appropriate coordination and apportioning of the research responsibilities for the research products construction and validation. It is important to highlight that the proposed strategy is a new way of applying the Action-research method in Software Engineering.
Structural model to evaluate the competence of the software developer
Authors: Cantú-Mata José Luis , Hernández José Segoviano , Penilla-Leal Roberto , Zurita-Alarcón Raúl de Jesús 
Published: September 2023

Every timemore and more companies are turning to hiring service providers for “not central” activities in the organization. The purpose of the study is to develop and validate a structural model to assess the skills of software developer. The evaluation was performed by the service quality provided from the client’s perspective, the results are 32 companies hiring the software Outsourcing service. SMART-PLS software was used to perform statistical analysis to obtain an R2 of 0.836 and 0.641 for the variables: Preparation employee-company (Y1) and updated competent staff (Y2), respectively.
Variable frequency harmonic vibration suppression using active vibration absorption
Authors: Beltrán-Carbajal Francisco 
Published: September 2023

Passive dynamic vibration absorbers have been extensively used for harmful vibration attenuation in many practical engineering systems. The applicability of these passive vibration absorption devices is limited to a specific narrow operation frequency bandwidth. In this article, a novel active vibration absorption scheme is proposed to extend the vibration suppression capability of a passive mass-spring-damper absorber for any excitation frequency, including interest resonant harmonic perturbation forces. The central foundations of a passive absorber are exploited in the design stage of the presented absorption scheme. Thus, the active absorption device applies forces on the protected mechanical system that counteract the unknown perturbation forces, conserving the vibration attenuation property of the passive absorber. The perturbation force is estimated on-line using an extended state observer proposed in this work. Simulation results are included to show the efficiency of the active vibration absorption scheme to reject completely unknown resonant and chaotic forced vibrations affecting the primary mechanical system, and to prove the effectiveness of the estimation of exogenous perturbation forces.
Detection and classification of Non-Proliferative Diabetic Retinopathy using a Back-Propagation neural network
Authors: Rosales-Silva Alberto Jorge , Velázquez-González Jesús Salvador , Gallegos-Funes Francisco Javier , Guzmán-Bárcenas Guadalupe de Jesús 
Published: September 2023

One of the most serious complications of type 2 Diabetes Mellitus (DM) is the Diabetic Retinopathy (DR). DR is a silent disease and is only recognized when the changes on the retina have progressed to a level at which treatment turns complicate, so an early diagnosis and referral to an ophthalmologist or optometrist for the management of this disease can prevent 98% of severe visual loss. The aim of this work is to automatically identify Non Diabetic Retinopathy (NDR), and Background Retinopathy using fundus images. Our results show a classification accuracy of 92%, with sensitivity and specifity of 95%.