bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hábitos de alimentación en adolescentes embarazadas de acuerdo a su estado civil
Authors: Guzmán-Mercado Elizabeth , Vásquez-Garibay Edgar M. , Troyo-Sanroman Rogelio , Romero-Velarde Enrique 
Published: June 2016

Objetivo: identificar los hábitos alimentarios de adolescentes embarazadas en cuatro estados civiles diferentes: casada, cohabita con una pareja, soltera sin pareja y soltera con una pareja. Métodos: en estudio transversal, se incluyeron 321 adolescentes embarazadas de 13-19 años que acudieron al Hospital Civil de Guadalajara Dr. Juan I Menchaca, Guadalajara (Jalisco, México). Se encontraban sanas, en cualquier trimestre del embarazo y pertenecían a un nivel socioe-conómico bajo o medio-bajo. El estado civil se estratificó en: casadas; en unión libre; soltera con una pareja y soltera sin pareja. Se incluyeron datos socio-demográficos, económicos y de hábitos de alimentación. Se utilizaron pruebas de ANOVA, pruebas post-hoc para Chi 2 , razón de momios y modelos de regresión logística. Resultados: la frecuencia de las adolescentes casadas fue de 9,3%, 59,8% en unión libre, 15,3% eran solteras sin pareja y 15,6% solteras con pareja. La baja escolaridad (RM 2,6 [1,5-4,4]) y la ocupación en el hogar (RM 4,47 [1,99-10,0]) predominaron entre las adolescentes en unión libre; la ocupación en el hogar (RM 0,28 [0,127-0,61]) y cenar sin compañía (RM 4,12 [1,62-10,8]) fueron significativamente más frecuentes en adolescentes sin pareja. El consumo de verduras fue menor en las adolescentes casadas y en quienes cohabitaban con pareja; el consumo de frijoles y pan dulce fue menor en adolescentes embarazadas casadas. Conclusión: debido a que ciertas variables y hábitos de alimentación mostraron diferencias entre los grupos es pertinente analizar las adolescentes embarazadas de acuerdo a su estado civil.
Niveles de oligoelementos en el suero de niños con bronconeumonía y sin ella
Authors: Wang Bingsong , Li Yijun , Wu Xiaolu , Liu Qingqing , Tang Xue , Wang Zuo 
Published: June 2016

Objetivos: oligoelementos como zinc (Zn), hierro (Fe) y cobre (Cu) tienen una influencia significativa en el mantenimiento de la función inmune y del metabolismo normales; modulan la función immune e influyen en la susceptibilidad del organismo ante infecciones. Pero la relación entre trazas de estos elementos y la bronconeumonía resultó incierta. Métodos: en este estudio fueron incluidos 28 niños con bronconeumonía y 46 niños sanos agrupados por edad. Se determinaron los niveles de Zn, Cu, Fe, calcio (Ca) y/o magnesio (Mg) en el suero de los niños con bronconeumonía y sin ella mediante espectrofotometría de absorción atómica. Resultados: los resultados muestran que varios niveles de microelementos como Zn, Ca, Mg y Fe en el grupo con bronconeumonía son menores que en el grupo control. En el grupo de niños con bronconeumonía el nivel de Ca en el suero está asociado positivamente con el zinc (Zn) (p < 0,05) y el hierro (Fe) (p < 0,05), mientras que hay una correlación positiva entre el cobre (Cu) y el calcio (Ca) (p < 0,05), magnesio (mg) (p < 0,05). Conclusión: el nivel de oligoelemento en el suero puede estar asociado con el riesgo de bronconeumonía entre los niños.
Asociación entre el estado nutricional y la prevalencia de pie plano en niños chilenos de 6 a 10 años de edad
Authors: López-Fuenzalida Antonio , Rodríguez Canales Carolina , Reyes Ponce Álvaro , Contreras Molina Ángela , Fernández Quezada Javiera , Aguirre Polanco Carolina 
Published: June 2016

Introducción: dado el incremento del sobrepeso y obesidad infantil, es relevante estudiar no solo las consecuencias metabólicas, sino también aquellas de índole musculoesqueléticas que pueden afectar la funcionalidad motriz, como es el pie plano, en esta población. Objetivo: identificar la asociación entre el estado nutricional y la prevalencia de pie plano en niños y niñas chilenos de 6 a 10 años. Métodos: el z-score del índice de masa corporal (IMC) y el registro y análisis de las huellas plantares según la metodología de Hernández-Corvo fue llevado a cabo en 388 escolares (52,3% niñas). Un test de diferencia para dos proporciones fue utilizado para evaluar las diferencias entre los grupos. Se considera una significancia estadística con p ≤ 0,05. Resultados: la prevalencia del exceso de peso fue de más del 40%. Esta prevalencia fue más alta en las niñas (47,8%) que en los niños (42,7%). La prevalencia de pie plano en todos los niños fue del 17%, presentando valores más elevados el pie derecho (18,3%) que el izquierdo (15,7%). Hay un incremento significativo de la prevalencia de pie plano en los niños obesos en relación con los niños con sobrepeso y normopeso. Conclusión: el estado nutricional está asociado con incrementos en la prevalencia de pie plano en niños. En la población infantil de 6 a 10 años de edad, la obesidad está asociada con la alteración morfológica del pie.
<p>Learning Styles: Teaching Technology Subjects Can Be More
Effective</p>
Authors: Sutliff Ronald I. , Baldwin Virginia 
Published: June 2016

Learning style theory has been developed and applied in various curricula for all
levels of education. Kolb (1985) developed one particular method of assessing student
learning style. The use of this method has been documented in the engineering and
technology programs of several universities. Variations in learning style due to
cultural diversity have been studied and are described in the literature. This
article describes and recommends the use of learning style theory to assess individual
learning styles in the classroom and the use of teaching methods to accommodate various
learning styles. Sutliff (one of the authors) administered the Learning Style Inventory
(LSI) to his computer-aided drafting class in the School of Technology at Eastern
Illinois University. Results of this study are offered here, as well as examples drawn
from the literature, to show the potential helpfulness of this process in accommodating
the various learning styles of students of engineering and technology, including those
that result from cultural diversity.
<p>Learning &amp; Growing: Integrating Technology Undergraduates into the
Development of an Industrial Case Study</p>
Authors: Newton Kathryne , Schmidt Edie 
Published: June 2016

A national industrial distribution association approached us to develop a case
study for its association members. The national association assumed responsibility for
identifying educational needs of upper level, mid level, and lower level personnel in
the industry. In the previous year, a case study had been developed to educate upper
level managers in the strategic nature of distribution in their industry. The
association found that upper level management had a great learning experience and wanted
lower level workers to have the same opportunity to refine and enhance their knowledge
on making inventory and warehousing decisions. The project objective was to develop a
case study that would be used in a weekend workshop to educate operations and customer
service personnel involved in making logistics-related decisions. The mid level
operations and customer service personnel were to attend a two-day workshop to learn
basic terminology, analyze the case study, and refine their current knowledge
surrounding their job duties. This article describes the process of developing a
case study for a national trade association and integrating learning opportunities for
undergraduate technology students at Purdue University. The needs assessment phase of
this project became an Inventory and Warehouse Management course project. The
educational goal for the weekend industrial workshop, based on the case study, was to
accomplish the following: Be valuable for companies with $5 million to $400
million in sales. Address the environment where employees typically handle 3,000 to
8,000 stock-keeping units. Teach the attendees in a highly participative
setting. Incorporate small group activities. The educational materials
to be developed for the weekend workshop were a new case study, workbook, supporting
reading materials, PowerPoint presentation, glossary of common terms, and an evaluation
instrument. The topic areas to be covered in the case study and the weekend
workshop were: Inventory management and control. Product backorder and
returned goods. Facility selection and layout. New product introduction.
Order fulfillment routines. Selection of transportation modes. Multiple branch
issues. New technology adoption. Human resource management. Key
productivity measures. International issues.
<p>Perceived Life Satisfaction of Workplace Specialist I Faculty and Mentors
Participating in a First-Year STEM Teacher Training Project</p>
Authors: Nickolich David , Feldhaus Charles , Cotton Sam , Barrett II Andrew J. , Smallwood Jim 
Published: June 2016

The purpose of this study was to measure perceived professional and personal life
satisfaction of Indiana Workplace Specialist I (WS I) faculty and their mentors.
Workplace Specialist I teachers are all first-year career and technical education (CTE)
faculty who must complete the WS I training program to be eligible for the Workplace
Specialist II teaching license. These new teachers bring significant professional skills
and experience to the secondary classroom; however, none had completed traditional
teachers college training before they were licensed. WS I faculty are assigned mentors
during the first year of training. Mentors must have at least five years of
kindergarten-12 (K-12) teaching experience, and typically they are CTE faculty
members. During a WS I / Mentor training workshop, 84 first-year WS I faculty and
68 mentors were asked to take the Life Satisfaction Index for the Third Age (LSITA) in
an effort to determine perceived overall life satisfaction; 105 total people
participated in the study. Of these 105, 45 mentors perceived life satisfaction as
higher than did the 60 first-year WS I CTE teachers. The results of the statistical
analyses revealed statistical significance at the 0.1 level (0.068). When analyzing
only participants (both mentors and WS I teachers who were 50 years of age or older, the
results of the statistical analyses revealed a statistical significance at the 0.05
level (0.023) between the perceived life satisfaction results of the 10 first-year WS I
faculty and the 28 mentors. Mentors who were 50 years of age or older had a higher level
of perceived life satisfaction than did the first-year WS I faculty members of the same
age group.
<p>Sustainable Design: An Educational Imperative</p>
Authors: Klein David , Phillips Kenneth R. 
Published: June 2016

This contribution presents a curriculum model and pedagogy for teaching
sustainability concepts to industrial design students at the Metropolitan State College
of Denver (MSCD). The curriculum provides students with instruction about low-impact
material and process selection (renewable, toxic, embodied energy); energy efficiency
(transportation, processing, use of product); quality and durability; design for
reuse/recycling; and social relevancy/value, consumer value, responsible
production/procurement (fair labor). Although the authors are aware of the
interrelationship of these categories, they isolated each one to make them easier to
teach, explain, and assess. In our industrial design studio courses, sustainability
and product life cycle assessment are established as design parameters for all projects
throughout the curriculum. Sustainable principles are internalized as students devise
practical design solutions. This pedagogy enables students to practice sustainability in
relation to product design as they conduct product feasibility studies, design
development, and production planning. This article aims to advance design education
by serving as an example of how sustainability may be taught and integrated into a
curriculum and by providing case studies of completed student design projects.
<p>Developing Occupational Programs: A Case Study of Community
Colleges</p>
Authors: Doyle Duane E. 
Published: June 2016

A progressively more technological and competitive employment environment in
today’s world economy requires employees to have a firm understanding of critical
technical skills to build on when they arrive at the workplace. This study examines how
differences in the environmental conditions and organizational factors facing four
community colleges contributed to the development of occupational and technical
education programs. This study was driven by one primary research question: What
environmental conditions and organizational factors influence the nature of the
strategic response in the form of technical education program development within
community colleges? To answer this question, a qualitative study of both stakeholders in
higher education (which included individuals at four community colleges in the state of
Arkansas) and individuals at the Arkansas Department of Higher Education was conducted.
The institutions selected represented the widest possible range of organizations. A
conceptual framework was developed that included previous research on normative,
regulative, and cultural-cognitive environments and organizational response processes.
The framework served as a guide to identify how external conditions in these processes
influence the nature of the development of occupational and technical education programs
at community colleges in Arkansas.
<p>Addressing Safety and Liability in STEM Education: A Review of Important
Legal Issues and Case Law<sup>1</sup></p>
Authors: Love Tyler S. 
Published: June 2016

Labs of today are less safe, students are inadequately instructed in safety, and
faculty members do not have adequate experience to lead students safely (Haynie, 2008).
Technology education, career and technical education (CTE), industrial education,
engineering education, and science education laboratories are potentially dangerous
places, which is why faculty members working in these areas must not only be concerned
with student and faculty safety, but also protection against their own liability
(Gathercoal & Stern, 1987; Frantz, Friedenberg, Gregson, & Walter, 1996; Hall
& Marsh, 2003; Toglia, 2009). Injuries resulting from school laboratory activities
are a harsh reality due to the hands-on design-based learning that is the cornerstone of
science, technology, engineering, and mathematics (STEM) education. Despite potential
injuries, STEM educators cannot fear liability and sacrifice the advantages of
laboratory experiences that foster inquiry-based science and are essential to student
learning (Zirkel & Barnes, 2011). Studying and following developing case law
can serve as a viable means for institutions, administrators, and faculty members
potentially to prevent an accident and to avoid being found liable. STEM education
teacher preparation programs must adequately prepare pre-service and in-service teachers
and administrators through coursework, professional development, and developing case
law. Being proactive about potential litigation will save time, money, and other costly
measures that are important considering today’s tight budgets and trying to prevent
losses (Janosik, 2005). This article examines current legal cases regarding classroom
and laboratory safety issues for grades P-16 STEM education programs. In addition,
strategies for managing these risks and reducing liability will be discussed.
<p>Examining the Demographics and Preparation Experiences of Foundations of
Technology Teachers</p>
Authors: Love Tyler S. 
Published: June 2016

When the Standards for Technological Literacy were released in 2000, Technology
and Engineering (T&E) educators were expected to integrate concepts from other
content areas within the context of engineering design and problem solving (ITEA/TTEEA,
2000/2002/2007). Fourteen years later, the Next Generation Science Standards called for
science educators to teach engineering content and practices within their cunicula (NGSS
Lead States, 2014). These integrative standards have increased the demands placed on
pie- and in-service teacher preparation efforts to ensure science and T&E educators
are properly prepared to teach cross-disciplinary concepts. However, requisite for
suggesting changes to adequately prepare educators for teaching such concepts, the
demographics and preparation expenences of those teaching within these content areas
must be thoroughly examined. This is especially important m T&E education, where
there arc fewer highly qualified T&E educators than openings m the United States
(Move, 2009). Given this shortage it begs to question, “What are the demographic and
preparation expenences of those tasked with teaching T&E courses?” This study
examined the demographic and background charactensncs of 55 individuals who were
teaching Foundations of Technology (FoT). the International Technology and Engineering
Educators Association’s (1TEHA) flagship course. Furthermore, this research investigated
the types and amount of formal and informal preparation expenences that participating
FoT teachers completed within science and T&E education. The findings revealed
substantial variations among the preparation expenences of those participants in this
study. From these findings, recommendations to better prepare FoT teachers for integr
ating science concepts were suggested.
Second Semilog Pressure Derivative in Pressure Transient Analysis of Gas-Condensate Wells with Strong Phase Redistribution: Field Case Study
Authors: Adrian P. M. , Moreno R. B. 
Published: June 2016

Abstract
Well testing data is usually affected by different wellbore effects. Phase redistribution is one of the most important in gas wells with high liquid production (condensate or water) and volatile oil wells. The longer the wellbore phenomena, the higher the probability to distort reservoir pressure behavior (infinite acting flow regime, linear flow, etc.).
In this situation, the conventional pressure transient analysis would be hard to perform, increasing the probability to obtain erroneous values of permeability and skin factor. Nevertheless, in the last years, the use of primary and secondary pressure derivative as a diagnostic plots (Semilog and Log-Log plots), demonstrated to be very useful in low permeability gas wells and weak phase redistribution gas wells.
This paper evaluates of the second semilog pressure derivative technique for different types of phase redistribution. It also presents the application of this diagnostic plot in the interpretation of two gas-condensate well test with strong phase redistribution phenomena. Results highlight the applicability of second semilog pressure derivative over other similar techniques.
Managing Well Interventions during Low Oil Prices
Authors: Nkeisha Francis 
Published: June 2016

Abstract
During the last quarter of 2014, WTI crude oil price dropped precipitously from an average US$75 to a startling US$42. Production targets were difficult to achieve as the economic margin for well interventions narrowed. The revised objective was increasing oil production while minimizing investment cost and ensuring profitability of the well interventions. Identification of quick-win initiatives which required minimal investment to reactivate wells or increase their production included rig less interventions such as coiled tubing clean out campaigns and coiled tubing gas lift. Candidates which required heavy workovers were assessed through the RAPID process: R(eview) A(ssess) P(lan) I(mplement) D(iscuss). This process, though a part of our daily operations, was not aggressively implemented as oil prices further declined but was applied to the well review process to allow Petrotrin to be better prepared for more favourable oil prices. A revision to the economic feasibility of all well interventions was also re-evaluated to more lenient parameters. The estimated production from the quick-win initiatives was 500 bopd (unrisked) with a risked gain of (375bopd), whilst the estimated production increase from the application of the RAPID technique is expected the realize 1800 bopd (unrisked) with a risked production of 1080bopd. Well testing though significant, remained a challenge for proper evaluation of both the quick-wins and heavy workovers. In its absence Tubing Head Pressure (THP) and Line Pressure (LP) were monitored along with total transfer volumes at metering points to ensure expected gains were as was modelled. The economics of these projects were evaluated ensuring a Discounted Cash Flow Rate of Return (DCFROR) greater than 25%. Wells which did not meet the economic hurdle rate after the application of the RAPID technique were omitted pending more favourable oil prices, for cost optimization, Petrotrin proposes to implement the RAPID technique by project basis for operations such as fishing and well control for high pressure (HP) wells. Upon its approval, it would be included in the company's Standard Operating Procedure.
Application of Markov Chain Monte Carlo Proxy Modelling Based Workflow to Demonstrate Robust Convergence of In-place & Recoverable Volumes
Authors: Singh Sidharth , Zimmer Colin , Jamankulov Arman , Martinez Alejandro 
Published: June 2016

Abstract
A dry gas reservoir offshore North Trinidad has been on production since 2002 with a high recovery to date. Notwithstanding this maturity, significant volumetric uncertainty was suspected and this had the potential to alter the field development plan. Hence, a robust quantification of hydrocarbon volumes was deemed necessary through a study that rigorously captured risks and uncertainties and provided higher confidence in the predicted remaining reserves.
Experimental design based uncertainty analysis, Markov Chain Monte Carlo for Bayesian optimization and proxy modelling assisted history matching methodologies were used. Scoping Latin Hypercube (LHC) simulations were run to test a wide range of volumetric scenarios. MCMC allowed Bayesian optimization to be done in an unbiased manner but being computationally expensive, a proxy modelling workflow was utilized. Top LHC cases were selected to train a proxy. The efficiency of the proxy workflow enabled hundreds of full field proxy simulations to be run in a short time. All experiments were combined and an optimum filtering criterion established to short list potentially matched cases. Finally, stochastic volumes were selected from this filtered pool.
Due to the use of Bayesian algorithm, posterior uncertainty distributions were often different, and thus quite insightful, when compared to the prior distributions. The shape of prior distributions had limited impact on the final result. A limited number of LHC runs scoping a wide sample space were sufficient to train a robust proxy model. Acceptable history matches for all wells could be achieved just after the second MCMC cycle. LHC workflow allowed wider uncertainty sampling but typically poor matches, whereas MCMC proved to be a rapid & highly effective history matching technique but it tended to smooth out extremes volumetric results and converged towards a high confidence median. A key result was the observation of a very strong correlation between the "global" history matching error and field gas-in-place or recoverable volumes.
Use of this Proxy based workflow allowed significant reduction in computational costs. A powerful cross-plot analysis methodology is presented that demonstrates convergence of hydrocarbon volumes to a narrow range. Results showed that irrespective of the deterministic starting inputs, reduction in history match error was only achieved for a narrow posterior range of uncertainties and volumes, even where a large initial uncertainty was believed to exist. These results were successful in achieving the objective by largely reducing the volumetric uncertainty and re-confirming the initial view.