bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improving organizational newcomers’ creative job performance through creative process engagement: The moderating role of a synergy diversity climate
Authors: Richard Orlando C. , Avery Derek R. , Luksyte Aleksandra , Boncoeur O. Dorian , Spitzmueller Christiane 
Published: January 2019

AbstractDespite the mounting research demonstrating that employee seniority positively relates to creative job performance, we predict that a synergy diversity climate eliminates the employee seniority–creative job performance relationship by unleashing the creative potential of organizational newcomers. Drawing upon the integration‐and‐learning perspective for managing diversity, Study 1 finds that a synergy diversity climate moderates the relationship between employee seniority and supervisor‐rated creative job performance lending support to our hypothesis. Study 2 provides an extension by showing how creative process engagement mediates this moderating effect on self‐rated creative performance. Finally, Study 3 replicates and extends Study 2 by demonstrating the mediating role of creative process engagement but utilizing supervisor‐rated creative job performance, while again showing synergy diversity climate to be an important boundary condition. In sum, we find that synergy diversity climate, as opposed to fairness and discrimination diversity climate, interacts with employee seniority by facilitating greater creative process engagement for newcomers subsequently impacting creative job performance. We discuss theoretical and practical implications for how the individual‐level creative job performance effects may represent a microfoundation to creative team dynamics that confer a sustainable competitive advantage.
Oscillatory brain activity during acute exercise: Tonic and transient neural response to an oddball task
Authors: Ciria Luis F. , Luque‐Casado Antonio , Sanabria Daniel , Holgado Darías , Ivanov Plamen Ch. , Perakakis Pandelis 
Published: January 2019

AbstractIntense physical exercise exerts measurable changes at various physiological levels that are well documented in the literature. However, despite the key role of the brain in processing inputs from internal organ systems and the external environment to coordinate and optimize behavior, little is known about brain dynamics during exercise. The present study investigates tonic and transient oscillatory brain activity in a group of participants performing an oddball task during a single bout of aerobic exercise. Twenty young males (19–32 years) were recruited for two experimental sessions on separate days. EEG activity was recorded during a session of cycling at 80% (moderate‐to‐high intensity) of VO2max (maximum rate of oxygen consumption) while participants responded to infrequent targets (red square and big blue circle) presented among frequent nontargets (small blue circle). This was compared to a (baseline) light intensity session (30% VO2max) to control any potential effect of dual tasking (i.e., pedaling and performing the oddball task). A cluster‐based nonparametric permutations test revealed an increase in power across the entire frequency spectrum during the moderate‐to‐high intensity exercise compared to light intensity. Furthermore, the more salient target (red square) elicited a lower increase in (stimulus‐evoked) theta power in the 80% VO2max than in the light intensity condition. Alpha and lower beta power decreased less in the standard trials (small blue circle) during the moderate‐to‐high exercise condition than in the light exercise condition. The present study unveils, for the first time, a complex brain activity pattern during vigorous exercise while attending to task‐relevant stimuli.
Antioxidants and glycine can improve the developmental competence of vitrified/warmed ovine immature oocytes
Authors: Ahmadi Ebrahim , Shirazi Abolfazl , Shams‐Esfandabadi Naser , Nazari Hassan 
Published: January 2019

ContentsDespite the numerous potential applications of oocyte cryopreservation, the poor success rate has limited its practical applications. In livestock, particularly in ovine, the oocytes have low developmental competence following vitrification/warming process. Considering the occurrence of osmotic and oxidative stresses during the vitrification/warming process, the application of antioxidants and osmolytes may improve the developmental competence of vitrified/warmed oocytes. In the present study, we aimed to evaluate the effects of the addition of ascorbic acid (AA) and N‐acetyl cysteine (NAC) as antioxidants and glycine as an organic osmolyte either to the vitrification/warming solutions (VWS) or to the IVM medium on the developmental competence of vitrified/warmed ovine germinal vesicle stage oocytes. The survival rate in the vitrified groups was significantly lower than fresh ones. In vitrified/warmed oocytes, there was no significant difference in survival rate between supplemented and non‐supplemented groups. The addition of AA and/or NAC to the VWS or IVM medium and adding glycine to the IVM medium reduced the proportion of apoptotic oocytes and fragmented embryos, which was reflected as an increase in the proportions of metaphase II stage oocytes and blastocyst production. The best result was achieved by supplementing the IVM medium with NAC. In our study condition, antioxidants and glycine could improve the developmental competence of vitrified/warmed ovine immature oocytes, especially when added during IVM.
Positive affect regulation in youth: Taking stock and moving forward
Authors: Gentzler Amy L. , Root Amy E. 
Published: January 2019

AbstractThis article summarizes the four articles in the Social Development quartet focused on positive affect regulation in youth. Each article in the quartet shows that parents’ socialization of youth positive affect (e.g., encouraging, enhancing, savoring, or dampening responses) is associated with youth positive affect regulation and depressive symptoms. Further, three of the studies provide novel evidence for an indirect relationship whereby parental socialization predicts youth depressive symptoms through youth positive affect regulation. The studies include samples of youth across mid‐childhood and adolescence (7–18‐year‐olds) from three countries (the United States, Belgium, and India), and utilize several methods of assessing youth positive affect regulation or parental socialization (parent‐reported surveys, youth‐reported surveys, coded parent–child discussions). This integrative article also identifies several ways in which the study of youth positive affect regulation can be advanced. We address the conceptualization of positive affect regulation and the socialization of children's positive affect, constraints on the adaptiveness of upregulating positive emotions, methodological directions, potential moderated effects based on child characteristics such as sex or temperament, and the importance of studying outcomes beyond depression.
An extended high‐frequency ultrasound protocol for assessing and quantifying of inflammation and fibrosis in localized scleroderma
Authors: Ranosz‐Janicka Irmina , Lis‐Święty Anna , Skrzypek‐Salamon Alina , Brzezińska‐Wcisło Ligia 
Published: January 2019

AbstractBackgroundClinical characteristics of the lesions are used to identify activity and damage in localized scleroderma (LoS). For high‐frequency ultrasound (HF‐US), the features of active lesions were described.Materials and MethodsClinical signs of activity and damage in LoS lesions were assessed with the use of Localized Scleroderma Cutaneous Assessment Tool (LoSCAT) and HF‐US by two examiners independently. All US images were obtained using a 20 MHz HF‐US (DermaLab System, Cortex Technology, Hadsund, Denmark). The dermal thickness (DT) and echogenicity (intensity score, IS) of the LoS lesional dermis were measured in the area of each lesion with the highest score for erythema (ER), skin thickness (ST), and dermal atrophy (DAT). Measurements were compared to the site‐matched unaffected skin. The relative difference of DT and IS values was calculated between each lesion and its normal control for comparison among different clinical scores for ER, ST, and DAT.ResultsA total of 92 lesions in 40 adult patients were examined with HF‐US. Thirty one lesions were erythematous, 26 were in sclerosis, and 35 were in atrophy. A correlation between the clinical evaluation of the LoS lesions and US measurements was found. The sensitivity and specificity of HF‐US were 97% and 90%, respectively. The positive predictive value was 83%, negative predictive value—98%. Interrater reliability was excellent for LoSCAT and HF‐US findings.ConclusionHigh‐frequency ultrasound allows an accurate assessment of the inflammatory and fibrotic skin lesions in LoS.
Making knowledge and meaning in communities of practice: What role may science play? The case of sustainable soil management in England
Authors: Krzywoszynska Anna 
Published: January 2019

AbstractSocial learning is gaining popularity as a tool for understanding and designing interactions between experts and farming communities to enhance the uptake of sustainable and innovative farming practices. To date, the literature has mainly focused on the technical role scientists and researchers play in social learning, as sources of or co‐producers of knowledge. Social learning, however, implies a dynamic between the creation of knowledge (what can be done) and the creation of meaning (what is considered worth doing). This paper addresses this research gap by exploring the roles that “expert” actors and their narratives perform in meaning‐creation. I argue that a sustainable soil management community of practice is emerging in England and discuss the dynamics of farmer participation in this community. I further argue that members of this community use scientific “experts” and narratives to inspire, justify and legitimise sustainable soil management as a valid way of being a “good farmer.” This paper thus stresses the role that scientific or “expert” actors and narratives play in communities of practice as contributors to meaning‐creation inherent to social learning. How soil degradation will be addressed is as much a technical question, a question of what can be done, as a question of meaning, a question of what land managers consider worthwhile doing. The scientific community thus needs to work with the farming community not only to co‐produce technical solutions, but also to co‐produce shared visions of agrarian futures which put soils at their heart.
Meloxicam vs robenacoxib for postoperative pain management in dogs undergoing combined laparoscopic ovariectomy and laparoscopic‐assisted gastropexy
Authors: Bendinelli Cristiano , Properzi Roberto , Boschi Paolo , Bresciani Carla , Rocca Erica , Sabbioni Alberto , Leonardi Fabio 
Published: January 2019

AbstractObjectiveTo compare meloxicam and robenacoxib for short‐term postoperative pain management after combined laparoscopic ovariectomy and laparoscopic‐assisted gastropexy.Study designDouble‐blind, prospective, randomised clinical trial.AnimalsTwenty‐six client‐owned female dogs.MethodsDogs undergoing combined laparoscopic ovariectomy and laparoscopic‐assisted gastropexy were randomly divided into 2 groups. Before induction of anesthesia, 13 dogs received meloxicam (0.2 mg/kg subcutaneously), and 13 dogs received robenacoxib (2 mg/kg subcutaneously). Pain was scored with the Glasgow Composite Pain Scale (short form) before surgery and at 1, 6, 12, 18, and 24 hours after extubation. Rescue analgesia (tramadol, 3 mg/kg) was provided to dogs with a Glasgow pain score (GPS) ≥5. Glasgow pain scores were analyzed by ANOVA with treatment, age, and surgical time as fixed factors.ResultsGlasgow pain scores were higher at 24 hours postsurgery in dogs treated with robenacoxib (2.18 ± 0.29) compared with those treated with meloxicam (0.68 ± 0.41, P = .04). Two dogs treated with meloxicam and 7 dogs treated with robenacoxib required rescue analgesia. Regardless of the treatment, the overall GPS was lower at 18 and 24 hours postsurgery when the surgical time was >40 minutes compared with surgical times ≤40 minutes, but surgical site inflammation was likely a confounding factor in this finding. Glasgow pain score was not affected by patient age.ConclusionMeloxicam was more effective than robenacoxib at controlling pain in the population of dogs reported here.Clinical significancePreoperative administration of meloxicam effectively controls pain for 24 hours after combined laparoscopic ovariectomy and laparoscopic‐assisted gastropexy, but rescue analgesia may be required.
Vulnerability of Buried Pipelines to Landslides
Authors: Ferris Gerald , Newton Sarah , Porter Michael 
Published: January 2019

The movement of a mass of rock, debris or earth down a slope is a landslide, which in the pipeline industry is often referred to as ground movement. Landslides continue to cause pipeline failures throughout the industry, sometimes as the singular cause of failure and in others cases as a contributing factor to failures (such as stress corrosion cracking on slopes). Landslides can originate on slopes above a pipeline and cause impact loads; they can originate below a pipeline and cause unintended spans; and they can encompass the ground crossed by a pipeline, which can lead to high compressive (or tensile) strains and pipeline buckling. This paper focuses on the latter scenario.
Similar to the approach recently outlined for watercourses [1], the term ‘vulnerability’ refers to the conditional probability of pipeline failure given that landslide movement spatially impacts a pipeline. This paper presents the development of a statistical and judgment-based vulnerability model for pipeline crossings of slopes that are subject to landslides that can be used to rank the relative importance of slopes at a screening level of assessment. The model is based on case histories where this type of landslide scenario caused pipeline failures (defined as holes, leaks and ruptures), or buckling of pipelines that resulted in the need for immediate repairs. Vulnerability has two main uses: on its own to help prioritize large numbers of slope crossings for further investigation; and, once combined with estimates of the probability of landslide movement, to provide a probability of pipeline failure estimate that can be used to guide integrity management programs.
Modeling of Outflow Following Full-Bore Rupture in a Gas Pipeline
Authors: Leung Teresa , Botros Kamal K. , Tomic Aleksandar , Kariyawasam Shahani 
Published: January 2019

Accurate prediction of the gas release rate following a full-bore pipeline rupture is key to risk assessment, safe pipeline routing, effective emergency planning and valve closure strategy. Typical tools adopted by the pipeline industry are developed for a perfect gas and are designed to simulate an isolated line rupture event or for simplistic boundary conditions (e.g. constant inlet pressure or no inflow). In the case of a real-life rupture event, a mainline block valve (MLBV) does not respond instantaneously at the time of rupture. Depending on the operation of the pipeline and the configuration of the network itself, the ruptured section might not be isolated for a period of time. Meanwhile, the inlet boundary condition is driven by the upstream network configuration, valve characteristics and operation protocols. As a result, the amount of mass release can be significantly under-estimated by a predictive tool that does not account for these factors.
A program based on the Method of Characteristics was developed, which allows an accurate equation of state and complex boundary conditions that reflect proper upstream conditions and valve closure strategy to be incorporated. An example case demonstrates that a shut-in scenario cannot provide correct out-flow prediction. The resulting outflow amount in a real-life rupture can be a few times higher than a shut-in scenario. This holds important implications in pipeline design, valve closure strategy and risk management.
Valve Characteristics and Their Effect on Transient Surge Pressures in Delivery Terminals
Authors: Perez Emma , El-Bayoumi Ahmed 
Published: January 2019

A hydraulic transient occurs when there is a sudden change in the steady state condition of a fluid in a pipeline. The rapid change in velocity of a fluid causes a pressure wave to travel along the pipeline, potentially causing damage to the equipment and piping. Usually, different scenarios are studied depending on whether the fluid is being injected or delivered from the pipeline into a tank. The most commonly studied causes of sudden fluid velocity change in a pipeline are: closing of a fast acting valve (ESD or control valves which close within seconds) and stopping or starting of pumps.
When a pipeline is delivering fluid into a tank, the closure of a valve can completely block the flow and create transient surge pressures that exceed acceptable pressure limits, and require mitigation. Although the closure of a fast acting valve is a commonly analyzed scenario, the closure of a motor operated valve (MOV), which is less commonly analyzed, can also create surge pressures which can put the pipeline at risk. There are three characteristics of an MOV that can significantly impact the surge pressures it creates when it is closed. These valve characteristics are: flow coefficient, valve curve and stroke time.
Hydraulic simulations were performed to study the effect of these three valve characteristics on transient responses when delivering from pipelines into tanks. Simulation results show that a faster stroke time leads to higher pressure surges, as well as a valve with a quick closing or linear curve. However, the flow coefficient of the valves will have varying effects on transients depending on the piping system being analyzed. The purpose of this paper is to not only highlight the importance of valve characteristics when modeling transient surge events but also to provide key learnings that can be used to design safer delivery terminals.
Pipeline Route Planning for Multiphase Pipelines
Authors: Kitt Benjamin J. , Licker Aaron , Cull Joshua 
Published: January 2019

Pipelines transporting multiphase products (i.e. mixtures of liquids and gas) are common in the upstream oil and gas industry. However, there are numerous flow assurance challenges to the operation of multiphase pipelines, particularly in hilly terrain. For multi-phase pipelines the flow pattern, pressure drop, and associated liquid hold-up within the pipeline is highly dependent on the elevation profile, the gas to liquid ratio, the fluid properties, and the rate of flow. It is desirable to consider how multiphase pipelines can be routed to minimize these operational challenges.
Variation from project to project and the complex nature of multi-phase flow can create challenges to developing common rules of thumb to be used in pipeline routing. There are commercially available software programs that model steady-state and transient flow conditions for multiphase flow, but these programs accept only one set of inputs for a particular routing scenario and the process of finding an optimal pipeline profile through the landscape can become tedious. Consequently, in the author’s experience, it is still common practice to develop pipeline routes for multiphase pipelines using traditional pipeline routing methods that are biased towards pipeline construction rather than operational factors. However, operational cost-savings can be realized through the application of multi-phase flow optimization in early pipeline routing and facility siting.
This paper proposes an alternate method to routing multiphase pipelines using Geographic Information Systems (GIS) based design tools to simultaneously evaluate route options at a landscape level and model the hydraulic behavior of the multiphase flow to identify optimal pipeline routes that minimize the challenges related to multiphase flow. This method allows for proper consideration of the potential construction and operational challenges of multiphase pipelines to be integrated into the pipeline design and balance against various other factors which includes land use, construction methods, terrain challenges and environmental or social impacts. Considering these challenges early in the conceptual design process will help operators realize capital and operational cost savings while allowing for safer and more reliable pipeline operations.
The method uses a multi-criteria approach coupled with a hydraulic model with the ability to balance the influence each factor has on the calculated “least cost path” to route options that improve the flow assurance aspects by strategically navigating the terrain while respecting the host of other factors that contribute or influence the final chosen pipeline route. Using this method, operators can be assured that where opportunities exist to improve the hydraulic performance of a pipeline through route selection, these opportunities will be presented as outputs of the model and expert judgment can be used to determine the final pipeline alignment.
Influence of Cold Formed Bending on Strain Based Design Buckling Limits
Authors: Oldfield Tom , Turner Tim , Young Andy 
Published: January 2019

Cold formed bends are regularly used in onshore pipeline design to follow the profile and contours of the ground and to ensure any necessary bending is performed under controlled conditions. The cold forming process induces compressive and tensile plastic strains in the pipe wall which remain in the line pipe throughout the service life of the pipeline.
Strain based design of oil and gas pipelines is well established in the offshore environment, where high operating temperatures and pressures have pushed engineers to design more efficient structures through a better understanding of post yield material behaviour and loading mechanisms. The industry standard code DNV-OS-F101 covers the design and limit states for offshore pipeline environments.
There is less experience of strain based design in onshore pipelines, and some of the problems unique to the onshore environment have not been fully investigated.
Low lateral and vertical soil restraints can be observed on a pipeline operating in a desert environment, this in combination with high operational temperature and pressure loading can result in the potential for displacement of the bends. This displacement can induce significant strains in the pipeline. The compressive strains may be sufficient to develop local buckling. Consequently, the local buckling strain represents a key performance limit for the design of the bends.
There is currently no code guidance to include the additional strain component generated by the cold forming process for onshore strain based design. This results in overestimation of the allowable strain capacity of the bends.
This paper investigates how the fabrication of cold formed bends affects the local buckling strain limit and how this reduces the structural capacity of the bend.
Finite Element analysis has been used to assess how the additional strain components, induced during cold formed bending affects the operational capacity of the pipeline. Sensitivity analysis was carried out on a range of unpressurised line pipe, with a diameter to wall thickness ratio varying between 25 and 60, using a specific material model.
Sensitivity analysis indicated a strong correlation between the Finite Element results and those calculated from the local buckling strain limit equation within the industry standard code DNV OS-F-101. The results suggest that an increase in wall thickness, at the bends within a pipeline, could be a solution to offsetting the overestimation in allowable strain capacity due to the cold formed bending process.
Fully understanding the effect that cold form bending has on reducing the local buckling strain limit will promote a more robust design of onshore buried bends under high temperature loads.