bluuebunny/crossref_metadata_2025_split huggingface dataset:
The High-Pressure/High-Temperature Completion Landscape—Yesterday, Today, and Tomorrow
Authors: Lehr Douglas J. , Collins Scott D. 
Published: August 2015

Summary
High-pressure/high-temperature (HP/HT) wells demand the highest-performance equipment and services for the safe and successful completion of these high-risk and high-cost projects. The demands associated with logging, shoe-track isolation, equipment longevity and service life, completion and intervention options, and regulatory compliance push the limits of materials and services. The successful completion of HP/HT wells requires advanced materials evaluations, collaboration among many disciplines, and sufficient time for product development and assessment to meet current industry and regulatory standards.
The tools used in HP/HT completions are usually developed to meet the demands of a well or a family of wells. These tools include, but are not limited to, wellbore-isolation plugs, production packers, liner hangers, perforating guns, casing-collar-locator (CCL) tools, formation-evaluation tools, seal assemblies, and subsurface safety valves. The methods used for HP/HT tool development are evolving, and the development cycles are lengthening, particularly for ultra-HP/HT applications in which materials screening and stability assessments are required.
The development of tools for several recent Gulf of Mexico ultra-HP/HT wells required a multiyear schedule for development to industry and regulatory requirements. Because of their extreme depths, ultra-HP/HT wells are typically constructed architecture emphasizing small production casings across production intervals. This complicates cementing procedures, and severely limits product options. From an intervention standpoint, work-string options also become limited. Achieving mechanical success in these applications requires the operator to manage not only traditional resources such as time, people, and cash, but also the development of new high-performance technologies in an evolving regulatory environment.
What can the industry anticipate for future HP/HT wells in terms of architecture, product development, and regulatory challenges? This paper reviews the industry’s history in these areas, identifies current development paradigms, and discusses the future challenges in well planning and product development.
Oil-Rate Forecast by Inferring Fractional-Flow Models From Field Data With Koval Method Combined With the Capacitance/Resistance Model
Authors: Cao Fei , Luo Haishan , Lake Larry W. 
Published: August 2015

SummaryMany empirical and analytical models were developed to forecast oil production. Empirical models (including data-driven models) can, for example, find correlations between oil cut and production, but they lack explicit knowledge of the physical behavior. Classic analytical models are loyal to reservoir physics. Nevertheless, they often require estimation of water saturation as a function of time, which is difficult to obtain for multiwell reservoirs. It is desirable to combine advantages of both empirical and analytical models and develop a physical-model-based method that uses field data to infer oil rate.In this paper, we propose to infer fractional-flow models from field data by use of the Koval (1963) theory. We inversely solved the Koval fractional-flow equation to obtain a relationship between water cut and dimensionless time. By history matching field water-cut data, two model parameters, the Koval factor and the producer-drainage volume, are estimated. Nevertheless, it is challenging to use the Koval approach as a predictive model directly because the injection contribution into each producer in a future-time horizon must be evaluated first.To address this issue, we combine the Koval approach with the capacitance/resistance model (CRM), which characterizes the injector/producer connectivities and response time. The material balance of fluids is established in a producer-based drainage volume to consider the contributions from nearby injectors and the time lag in production caused by reservoir/fluids compressibility. A regression approach is simultaneously advanced to minimize the model error. Because of robustly integrating the reservoir physical behavior and the data-driven approach, the combination of the Koval theory and the CRM can result in a synergy that leads to accurate oil-rate predictions.We validated this integrated method in synthetic homogeneous and heterogeneous reservoirs to test its reliability, and further applied it to a field case in western Venezuela. Case studies demonstrate that one can use this integrated model as a real-time tool to characterize interwell connection and to predict future oil production accurately.
A Contemporary Analysis of Accounting Professionals' Work-Life Balance
Authors: Buchheit Steve , Dalton Derek W. , Harp Nancy L. , Hollingsworth Carl W. 
Published: August 2015

SYNOPSIS
In recent years, work-life balance surpassed compensation as the most important job satisfaction factor among AICPA members (American Institute of Certified Public Accountants [AICPA] 2004). Despite the continued importance of this issue in the accounting profession (AICPA 2011), prior research has not examined work-life balance perceptions across different segments of the profession. We survey 1,063 practicing CPAs in order to assess the comparative work-life balance perceptions across (1) Big 4 versus smaller public accounting firms, (2) audit versus tax functions, and (3) public accounting versus industry work contexts. Consistent with predictions based on institutional logics theory, we find that work-family conflict and job burnout perceptions (our proxies for work-life balance) are highest in the Big 4. We are the first study to measure both support-for and viability-of traditional alternative work arrangements (AWAs), and we report an important distinction between these two constructs. Specifically, while CPAs across all public accounting firms (i.e., Big 4, national, regional, and local firms) report similar levels of organizational support-for AWAs, Big 4 professionals report significantly lower perceived viability-of AWAs (i.e., the ability to use AWAs and remain effective at one's job) compared to accounting professionals at smaller public accounting firms. Further, we find no differences between audit and tax professionals' perceptions across any of our work-life balance measures. We also document nuanced differences regarding work-life balance perceptions in public accounting versus industry. For example, contrary to conventional wisdom, work-life balance is not uniformly “better” in industry (e.g., burnout is actually lower in smaller public accounting firms compared to industry). Finally, we use open-ended responses from a follow-up survey to provide several recommendations for firms to improve their work-life balance efforts.
Playskin Lift: Development and Initial Testing of an Exoskeletal Garment to Assist Upper Extremity Mobility and Function
Authors: Lobo Michele A. , Koshy John , Hall Martha L. , Erol Ozan , Cao Huantian , Buckley Jenner M. , Galloway James C. , Higginson Jill 
Published: August 2015

BackgroundA person's ability to move his or her arms against gravity is important for independent performance of critical activities of daily living and for exploration that facilitates early cognitive, language, social, and perceptual-motor development. Children with a variety of diagnoses have difficulty moving their arms against gravity.ObjectiveThe purpose of this technical report is to detail the design process and initial testing of a novel exoskeletal garment, the Playskin Lift, that assists and encourages children to lift their arms against gravity.DesignThis report details the design theory and process, the device, and the results of field testing with a toddler with impaired upper extremity function due to arthrogryposis multiplex congenita.ResultsThe Playskin Lift is an inexpensive (&lt;$30 material costs), easy to use (5/5 rating), comfortable (5/5 rating), and attractive (4/5 rating) device. While wearing the device, the child was able to contact objects more often throughout an increased play space, to look at toys more while contacting them, and to perform more complex interactions with toys.LimitationsThis report details initial testing with one child. Future testing with more participants is recommended.ConclusionsThese results suggest that by considering the broad needs of users, including cost, accessibility, comfort, aesthetics, and function, we can design inexpensive devices that families and clinicians can potentially fabricate in their own communities to improve function, participation, exploration, and learning for children with disabilities.
Multiple recurrent cerebral hydatidosis: A case report with review of literature
Authors: Nikhita P , Vani HN , Dattatreya P , Nijaguna N 
Published: August 2015

Echinococcisis is an emerging zoonotic parasitic disease worldwide and is a significant health burden among developing nations. Cystic hydatidosis is more commonly found in lungs and liver but rarely cerebral involvement can occur. Multiple hydatid cysts of brain are uncommon and may be wither primary or secondary. Hydatid cyst shoud be considered as a differential diagnosis for cystic lesions of the brain. Here we are reporting a 8 year old boy with multiple cerebral hydatid cysts recurring within three months after surgical rupture of a primary large cerebral hydatid cyst.Asian Journal of Medical Sciences Vol.7(1) 2015 105-107
Budhigandaki Hydroelectric Project is Unlikely to be Implemented as Recommended by Tractebel Engineering
Authors: Shrestha Hari Man 
Published: August 2015

Tractebel Engineering SA France has recommended 263 m high double curvature arch dam for the Budhigandaki Hydroelectric Project for generation of 1200 MW. The author, based on findings of the Tractebel’s feasibility study itself, gives reasons why the project is unlikely to be implemented as recommended by the consultant. Further, the author raises the question with the government why this project was declared as one of the projects of national pride and was ready for committing to funding beforehand for the preparation of detail design, tender documents and tender drawings in a single package contract along with the feasibility study when the investment decision could only be taken after ascertaining the soundness/ attractiveness of the project on technical, economical, financial and socio-environmental grounds through feasibility and Environmental Impact Assessment (EIA) studies. The author also believes that the project could become more attractive if the downstream benefits from flow regulation in existing irrigation project in India could be accounted for and two potential hydroelectric projects in Nepal at the downstream reaches could be implemented first to derive additional power benefits in these two projects from flow regulation. HYDRO Nepal JournalJournal of Water, Energy and EnvironmentIssue: 17, July 2015
Report of whole-brain radiation therapy in a patient with an implanted deep brain stimulator: important neurosurgical considerations and radiotherapy practice principles
Authors: Kotecha Rupesh , Berriochoa Camille A. , Murphy Erin S. , Machado Andre G. , Chao Samuel T. , Suh John H. , Stephans Kevin L. 
Published: August 2015

Patients with implanted neuromodulation devices present potential challenges for radiation therapy treatment planning and delivery. Although guidelines exist regarding the irradiation of cardiac pacemakers and defibrillators, fewer data and less clinical experience exist regarding the effects of radiation therapy on less frequently used devices, such as deep brain stimulators. A 79-year-old woman with a history of coarse tremors effectively managed with deep brain stimulation presented with multiple intracranial metastases from a newly diagnosed lung cancer and was referred for whole-brain radiation therapy. She was treated with a German helmet technique to a total dose of 30 Gy in 10 fractions using 6 MV photons via opposed lateral fields with the neurostimulator turned off prior to delivery of each fraction. The patient tolerated the treatment well with no acute complications and no apparent change in the functionality of her neurostimulator device or effect on her underlying neuromuscular disorder.
This represents the first reported case of the safe delivery of whole-brain radiation therapy in a patient with an implanted neurostimulator device. In cases such as this, neurosurgeons and radiation oncologists should have discussions with patients about the risks of brain injury, device malfunction or failure of the device, and plans for rigorous testing of the device before and after radiation therapy.
Association of traumatic brain injury with subsequent neurological and psychiatric disease: a meta-analysis
Authors: Perry David C. , Sturm Virginia E. , Peterson Matthew J. , Pieper Carl F. , Bullock Thomas , Boeve Bradley F. , Miller Bruce L. , Guskiewicz Kevin M. , Berger Mitchel S. , Kramer Joel H. , Welsh-Bohmer Kathleen A. 
Published: August 2015

OBJECT
Mild traumatic brain injury (TBI) has been proposed as a risk factor for the development of Alzheimer’s disease, Parkinson’s disease, depression, and other illnesses. This study’s objective was to determine the association of prior mild TBI with the subsequent diagnosis (that is, at least 1 year postinjury) of neurological or psychiatric disease.

METHODS
All studies from January 1995 to February 2012 reporting TBI as a risk factor for diagnoses of interest were identified by searching PubMed, study references, and review articles. Reviewers abstracted the data and assessed study designs and characteristics.

RESULTS
Fifty-seven studies met the inclusion criteria. A random effects meta-analysis revealed a significant association of prior TBI with subsequent neurological and psychiatric diagnoses. The pooled odds ratio (OR) for the development of any illness subsequent to prior TBI was 1.67 (95% CI 1.44–1.93, p < 0.0001). Prior TBI was independently associated with both neurological (OR 1.55, 95% CI 1.31–1.83, p < 0.0001) and psychiatric (OR 2.00, 95% CI 1.50–2.66, p < 0.0001) outcomes. Analyses of individual diagnoses revealed higher odds of Alzheimer’s disease, Parkinson’s disease, mild cognitive impairment, depression, mixed affective disorders, and bipolar disorder in individuals with previous TBI as compared to those without TBI. This association was present when examining only studies of mild TBI and when considering the influence of study design and characteristics. Analysis of a subset of studies demonstrated no evidence that multiple TBIs were associated with higher odds of disease than a single TBI.

CONCLUSIONS
History of TBI, including mild TBI, is associated with the development of neurological and psychiatric illness. This finding indicates that either TBI is a risk factor for heterogeneous pathological processes or that TBI may contribute to a common pathological mechanism.
A mixed-methods exploration of an environment for learning computer programming
Authors: Mather Richard 
Published: August 2015

A mixed-methods approach is evaluated for exploring collaborative behaviour, acceptance and progress surrounding an interactive technology for learning computer programming. A review of literature reveals a compelling case for using mixed-methods approaches when evaluating technology-enhanced-learning environments. Here, ethnographic approaches used for the requirements engineering of computing systems are combined with questionnaire-based feedback and skill tests. These are applied to the ‘Ceebot’ animated 3D learning environment. Video analysis with workplace observation allowed detailed inspection of problem solving and tacit behaviours. Questionnaires and knowledge tests provided broad sample coverage with insights into subject understanding and overall response to the learning environment. Although relatively low scores in programming tests seemingly contradicted the perception that Ceebot had enhanced understanding of programming, this perception was nevertheless found to be correlated with greater test performance. Video analysis corroborated findings that the learning environment and Ceebot animations were engaging and encouraged constructive collaborative behaviours. Ethnographic observations clearly captured Ceebot’s value in providing visual cues for problem-solving discussions and for progress through sharing discoveries. Notably, performance in tests was most highly correlated with greater programming practice (p≤0.01). It was apparent that although students had appropriated technology for collaborative working and benefitted from visual and tacit cues provided by Ceebot, they had not necessarily deeply learned the lessons intended. The key value of the ‘mixed-methods’ approach was that ethnographic observations captured the authenticity of learning behaviours, and thereby strengthened confidence in the interpretation of questionnaire and test findings.Keywords: evaluation; mixed methods; video analysis; computer programming(Published: 28 August 2015)Responsible Editor: Meg O’Reilly, Southern Cross University, Australia.Citation: Research in Learning Technology 2015, 23: 27179 - http://dx.doi.org/10.3402/rlt.v23.27179
Planes, Pucks, Automobiles: Migration and Youth Hockey
Authors: Mountain Alexandra 
Published: August 2015

This project positions the professionalization of youth hockey as a small component of a much larger process of the “globalization” of sport. Youth hockey players have moved to Canada internationally and among Canadian provinces locally. This study traces the movement and advances of young players (ages 16-20), 1980-2012, of the London Knights (London, Ontario), tapping into already compiled data on players’ team affiliation that many historians might overlook. This database shows an emerging pattern of transnational and internal migration among professional youth players.
Aggregation, Evaluation, and Social Choice Theory
Authors: Patty John W. , Penn Elizabeth Maggie 
Published: August 2015

AbstractWe argue that political theory, regardless of whether it is “positive” or “normative” in nature, is structured and unified by social choice theory. We point out that the central conclusions of social choice theory are context-free and thus apply to any aggregation of multiple factors. The generality of the basic framework of social choice theory implies its results are relevant to any consideration of trade-offs and, because any interesting theory must deal with a situation in which there are at least two plausible predictions or prescriptions, these results unify all interesting theories of politics.
Molecular Testing in Anatomic Pathology and Adherence to Guidelines: A College of American Pathologists Q-Probes Study of 2230 Testing Events Reported by 26 Institutions
Authors: Volmar Keith E. , Idowu Michael O. , Souers Rhona J. , Nakhleh Raouf E. 
Published: August 2015

Context
The appropriate and timely performance of molecular testing in anatomic pathology is an indicator of quality. The National Comprehensive Cancer Network (NCCN) publishes a comprehensive treatment guideline that includes recommendations for ancillary testing.

Objective
To establish benchmarks for rates of adherence to NCCN testing recommendations through a multi-institutional study.

Design
Participants in a 2013 Q-Probes study of the College of American Pathologists reported data from molecular testing on anatomic pathology cases, excluding hematolymphoid neoplasms, breast primary carcinomas, and gynecologic cytology.

Results
Twenty-six institutions reported data from 2230 molecular testing events. In a retrospective study limited to colon, lung, and melanoma, there was strict adherence to guidelines in a median 71% (10th to 90th percentile range, 33%–90%) and there was at least loose adherence in a median 95% (10th to 90th percentile range, 57%–100%). There was adequate tissue to complete testing in a median 98% (10th to 90th percentile range, 86%–100%); in aggregate the adequacy rate for cell blocks was lower (84%, P &lt; .001). Median test turnaround time was 8 days (10th to 90th percentile range, 4–13 days). In a prospective collection of all organ sites, there was strict adherence to guidelines in a median 53% (10th to 90th percentile range, 20%–71%), and there was at least loose adherence in a median 94% (10th to 90th percentile range, 75%–100%). Adherence to guidelines was higher for lung specimens and in institutions with more multidisciplinary conferences.

Conclusions
This multi-institutional study provides benchmarking data on appropriateness and timeliness of molecular testing in anatomic pathology.
Pathology and Laboratory Medicine Support for the American Expeditionary Forces by the US Army Medical Corps During World War I
Authors: Wright James R. , Baskin Leland B. 
Published: August 2015

ContextHistorical research on pathology and laboratory medicine services in World War I has been limited. In the Spanish American War, these efforts were primarily focused on tropical diseases. World War I problems that could be addressed by pathology and laboratory medicine were strikingly different because of the new field of clinical pathology. Geographic differences, changing war tactics, and trench warfare created new issues.ObjectivesTo describe the scope of pathology and laboratory medicine services in World War I and the value these services brought to the war effort.MethodsAvailable primary and secondary sources related to American Expeditionary Forces' laboratory services were analyzed and contrasted with the British and German approaches.ResultsThe United States entered the war in April 1917. Colonel Joseph Siler, MD, a career medical officer, was the director, and Colonel Louis B. Wilson, MD, head of pathology at the Mayo Clinic, was appointed assistant director of the US Army Medical Corps Division of Laboratories and Infectious Disease, based in Dijon, France. During the next year, they organized 300 efficient laboratories to support the American Expeditionary Forces. Autopsies were performed to better understand treatment of battlefield injuries, effects of chemical warfare agents, and the influenza pandemic; autopsies also generated teaching specimens for the US Army Medical Museum. Bacteriology services focused on communicable diseases. Laboratory testing for social diseases was very aggressive. Significant advances in blood transfusion techniques, which allowed brief blood storage, occurred during the war but were not primarily overseen by laboratory services.ConclusionsBoth Siler and Wilson received Distinguished Service Medals. Wilson's vision for military pathology services helped transform American civilian laboratory services in the 1920s.