bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of Lean Methodology in Community Development to Improve Infrastructure Projects Delivery
Authors: Asomba Meshack , Mustapha Adetoun , Odunwa Peter , Onaolapo Bolarinwa , Mshelbila Philip , Osayande Nedo 
Published: July 2013

Abstract
Shell companies and its Joint Venture partners spend millions of dollars per year on social investments in host communities as commitment to corporate social responsibility. Lack of community ownership and participation in identifying developmental needs and delivery process were seen as gaps in realizing full benefits of the social investments. A participatory interface management and development model– The Global Memorandum of Understanding (GMoU) with host communities was introduced to address these gaps.
In the GMoU model, the communities take charge and drive developmental initiatives, Shell and its Joint Venture partners provide funding/capacity building while government oversees process governance. However, the quality of most GMoU infrastructure projects has been a source of concern among stakeholders. To address these concerns, improvement opportunities were identified in the infrastructure projects' delivery process. For example, in one instance, over 488 infrastructure project designs were generated by 244 GMoU communities in one year with each community, developing different designs for similar infrastructure. This process requires communities to spend significant amount of development fund to pay for projects design. Similarly quality-checking and approving designs become burdensome for supervising engineers often leading to frustration, erosion of work-life balance and design flaws going undetected.
A Lean methodology that involves elimination of wastes through utilization of the knowledge of the people who do the job to deliver value to customers was therefore deployed to improve the GMoU Infrastructure Projects Delivery process. Stakeholders jointly produced results that eliminate wastes in the process, reduce approval cycle time, improve project quality and save cost. This paper will share this experience with learnings for cross industry collaboration in infrastructure projects design for betterment of the host communities.
New Empirical Correlation for Predicting Hydrate Formation Conditions
Authors: Salufu Samuel O , Nwakwo Princes 
Published: July 2013

Abstract
Natural gas hydrates pose serious difficulties to pipeline operators, gas producers and processors in the oil industries where they plug the production lines, transmission lines, and choke production equipment. Thus, reducing production capacity or even stop production. Several models have been developed using thermodynamic method and numerous correlations have been developed using gravity method in order to predict the conditions for hydrates formation without considering water vapour pressure has one of the parameters that hydrates formation depend on. Thus, the existing correlations have some limitations.
The proposed empirical correlation was developed using gravity method and statistical analysis software to illustrate the mathematical expression that correlate hydrate-formation temperature, pressure, water vapour pressure, and specific gravity of hydrocarbon systems. The correlation was developed using 300 data points from literature. The correlation was validated with 26 data points not included in the optimization and compared with some of the existing correlations.
The results of statistical analysis show that the proposed correlation indicates highest value of correlation coefficient (R2 = 0.996), and lowest average absolute deviation value (AAD = 1.84 °F) and lowest value of average absolute percentage relative error (AAPRE = 0.284°F) among the existing correlation compared with. These results indicate that the proposed empirical correlation predicts closest to the experimental values compared to the existing ones.
Compilation Of Instantaneous Source Functions For Varying Architecture Of A Layered Reservoir With Mixed Boundaries And Horizontal Well Completions; Part VI: Letter ‘E’ Architecture
Authors: Adewole E. S. 
Published: July 2013

Abstract
Useful instantaneous source functions for a two-layered reservoir with architecture akin to letter ‘E’ are compiled for all possible external boundary types assuming that each layer of the reservoir has a horizontal well. Both crossflow and no-crossflow interface cases in a normal and inverted architecture are considered.
Results show that sixteen (16) different boundary variations are possible each for normal and inverted architecture. Among these variations only two (2) may have the maximum six (6) similar external boundary combinations of either no-flow or constant-pressure. There are two (2) mandatory infinite-acting external boundaries in each architecture. With the interface considered as a constant-pressure interlayer boundary, the more the number of constant-pressure external boundaries, the fewer the number of uniform flux (sealed boundaries or no-flow) instantaneous source functions that can be written down and vice versa. Only single edged external fluid drive is possible in any architecture irrespective of the nature of the interface. Similarly, only one (1) top and one (1) bottom external fluid drive is possible for crossflow interface. For no-crossflow interface, only the top layer can be subject to top external fluid drive and only the bottom layer can be subject to a bottom external fluid drive.
In the inverted architecture, the heel of the horizontal well becomes the toe and vice versa. The predominant instantaneous source function in all the combinations is the infinite-acting source function of the kind I(x). The influence of this dominant function, and therefore, that of the entire layered reservoir, can be optimized especially where the interface is crossflow. The optimization is possible by completing the well as far away from the sealing boundary as possible to decelerate arrival of pseudosteady state and from a constant-pressure boundary to guarantee prolong clean oil production.
Cased Hole Section Milling And Under Reaming Operation In Converting Oil Well Into A Water Disposal Well, Onshore Amukpe Oil Field
Authors: Okogbe Bolaji , Orimoloye Samuel , Adewale Olufemi , Avanoma Ese , Alikor Emejiri O. , Papuc Victor 
Published: July 2013

Abstract
The Amukpe field operated by Seplat Petroleum Development Company was discovered in 1970 by the exploration well Amukpe 1. The field is located within OML 38 and lies about 40km NNW of Warri in the greater Ugheli Depobelt within the same microstructure as the Sapele Field, in Nigeria. A total of 3 wells have been drilled in this field; Amukpel, Amukpe 2 and Amukpe 3.
Seplat Petroleum generally classifies its oil fields into Amukpe, Sapele and Oben fields, on which workover and drilling activities have been executed.
The operator had challenge of how to dispose the over 30,000bbl of produced water from oil wells. Amukpe 2 oil well was then being proposed for workover and conversion to a water disposal well. The old completion string was successfully recovered and the old perforation squeezed off.
The paper is focus on how the operator successfully convert Amukpe 2, an oil well to a water disposal well through a record achieved cased hole section milling and, under-reaming operation within budget and time.
Improved Well and Reservoir Production Performance in Waterflood Reservoirs-Revolutionalizing the Hall Plot
Authors: Amedu Jonah , Nwokolo Christopher 
Published: July 2013

Abstract
Overtime waterflood has proven to be the most versatile of reservoir development strategies as the relative flexibility, relatively mature technology and adaptability in a variety of environments and patterns makes it frequently the economic and safe option. This paper presents experiences garnered from a high resolution well and reservoir surveillance in a waterflood asset and clearly demonstrates that effective waterflood performance management is key to realizing the full potentials of waterflood developments especially in sedimentary systems with marked micro and macro stratigraphic and structural heterogeneities.
Field W has been under waterflood for over twenty years and the recovery to date has more than doubled the initial depletion based estimate clearly demonstrating the widely proven benefits of waterflood developments. However poor injectivity, varying reservoir pressure and increased fracture growth have been recognized of late as major factors militating against effective water injection performance in the field.
This paper will demonstrate the applicability of Hall's plot towards a robust well and reservoir performance monitoring and management in Field W. The conventional and primary use of the Hall plot has been to track the quality of water injection/or general performance in/of injectors, but it will be demonstrated that field trends of oil and water cut, interference testing, reservoir pressure evolution, static and dynamic formation evaluation data and the general reservoir drainage pattern can be better understood with development ambiguities greatly illuminated with the judicious use of the Hall plot integrated with other associated diagnostic plots.
The paper will also clearly establish that for Field W the combination of the Hall plot techniques and other conventional waterflood diagnostic plots to field production data has significantly improved an understanding of field-wide well and reservoir performance, injector-producer pair interaction, effectiveness of injection regime/production policy, delineation of drainage patterns and a high resolution reservoir characterization for optimization of new well placements.
Which Drug For Which Patient? Is There a Fluoxetine Responding Versus a Bupropion Responding Personality Profile?
Authors: Bell D. Stewart , Shipman W. Mark , Cleves Mario A. , Siegelman Jill 
Published: July 2013

This paper proposes that a certain premorbid personality type – that of hard driving, achievement-oriented, often exercise-oriented individuals – correlates with bupropion response; conversely, patients without these premorbid traits and whose depression is marked by mood swings, irritability and rumination are likely fluoxetine responders.
The authors developed the Fluoxetine Bupropion Assessment Scale (FBAS), a 10-question, self-administered rating scale, to assess these traits and hypothesized that its use would improve outcomes.
A Marriage and Family Therapist (MFT) and a Registered Nurse/Nurse Practitioner (RN/NP) retrospectively reviewed 72 charts from one psychiatrist’s office for two time periods: before and after the psychiatrist utilized the questionnaire to guide antidepressant selection (33 charts before and 39 charts after). Raters were blinded to the theory and to the treatment time period. On the basis of clinical information in the charts, they formulated Clinical Global Impression assessments of treatment response in patients with Beck Depression Inventory scores ≥17 who were not on either drug at the time of intake, and who were prescribed either fluoxetine or bupropion.
The data were in the direction of better results in the FBAS-guided group, particularly after adjusting for age, gender and marital status (efficacy p = 0.087). When global improvement data were combined into three groups describing treatment response (improved, minimal to no improvement, and worse) there were statistically significant better results (p = 0.047) in the FBAS-guided treatment group. Revision and validation of the questionnaire and a larger, randomized study seem indicated.
The Role of Pain Catastrophizing in the Prediction of Acute and Chronic Postoperative Pain
Authors: Kremer Ran , Granot Michal , Yarnitsky David , Crispel Yonathan , Fadel Shiri , Anson Best Lael , Nir Rony-Reuven 
Published: July 2013

Background and Objectives:
Despite the established association between greater pain catastrophizing and enhanced postoperative pain, it is still unclear: (i) what is the relative contribution of each of the pain catastrophizing scale (PCS) dimensions in the prediction of acute and chronic postoperative pain; and (ii) whether PCS scores mediate the association between acute and chronic postoperative pain intensity.

Methods:
The current prospective, observational study was conducted at Rambam Health Care Campus, Haifa, Israel. PCS was obtained in 48 pain-free patients a day before an elective thoracotomy in response to tonic heat pain. Acute postthoracotomy pain (APTP) was assessed during rest, including general pain (Restgeneral), and incision-related pain (Restincision), and in response to provoked physical activity, including hand elevation (Provokedhand) and cough (Provokedcough).
Chronic postthoracotomy pain (CPTP) was assessed after 4.5±2.3 months.

Results:
Of the PCS subscales, only rumination: (i) was correlated with Restgeneral scores (r=0.337, P=0.027); and (ii) predicted chronic postthoracotomy pain in a regression analysis (P=0.001). General PCS and its subscales mediated the correlation between Restgeneral and chronic postthoracotomy pain intensity (Ps<0.006).

Conclusions:
Findings may elucidate the unique role of the rumination subscale in reflecting an individual's postopertive acute and chronic pain responsiveness. The transition from acute to chronic postoperative pain seems to be facilitated by enhanced pain catastrophizing.
Greater Frequency of Depression Associated with Chronic Primary Headaches Than Chronic Post-Traumatic Headaches
Authors: McMurtray Aaron M. , Saito Erin K. , Diaz Natalie , Mehta Bijal , Nakamoto Beau 
Published: July 2013

Objective: To compare the prevalence of co-morbid depression between patients with chronic primary headache syndromes and chronic posttraumatic headaches. Method: A prospective cross-sectional analysis of all patients presenting sequentially to a community-based general neurology clinic during a 2-year period for evaluation of chronic headache pain was conducted. Headache diagnosis was determined according to the International Headache Society's Headache Classification criteria. Depression was determined through a combination of scores on the clinician administered Hamilton Rating Scale for Depression and patients' self-report. An additional group of patients who suffered traumatic brain injuries (TBI) but did not develop post-traumatic headaches was included for comparison. Results: A total of 83 patients were included in the study: 45 with chronic primary headaches (24 with chronic migraine headaches, 21 with chronic tension headaches), 24 with chronic post-traumatic headaches, and 14 with TBI but no headaches. Depression occurred less frequently among those with chronic post-traumatic headaches (33.3%) compared to those with chronic migraine (66.7%) and chronic tension (52.4%) headaches (Chi-Square = 7.68; df = 3; p = 0.053), and did not significantly differ from TBI patients without headaches. A multivariate logistic regression model using depression as the outcome variable and including headache diagnosis, gender, ethnicity, and alcohol and illicit substance use was statistically significant (Chi-Square = 27.201; df = 10; p < 0.01) and identified primary headache (migraine and tension) diagnoses (Score = 7.349; df = 1; p = 0.04) and female gender (Score = 15.281; df = 1; p < 0.01) as significant predictor variables. The overall model accurately predicted presence of co-morbid depression in 74.7% of the cases. Conclusions: Co-morbid depression occurs less frequently among patients with chronic post-traumatic headaches and TBI without headaches than among those with chronic primary headaches.
Evaluation of the Relationship between the Znf804A Single Nucleotide Polymorphism Rs1344706 a/c Variant and Schizophrenia Subtype in Han Chinese Patients
Authors: Yang Yongfeng , Li Wenqiang , Yang Ge , Xiao Bo , Wang Xiujuan , Ding Minli , Zhao Jingyuan , Song Xueqing , Yue Weihua , Zhang Dai , Zhang Hongxing , Lv Luxian 
Published: July 2013

Objective: Recent genome wide association studies (GWASs) assessing the relationship between schizophrenia (SZ) and the ZNF804A gene, particularly the single nucleotide polymorphism (SNP) rs1344706, have yielded conflicting results. Schizophrenia is a heterogeneous disorder, so it is possible that an association may be restricted to specific SZ subtypes and that population heterogeneity may obscure a contribution of ZNF804A allelic variation to SZ risk. We thus evaluated the association between rs1344706 and different clinical SZ subtypes in a large Han Chinese patient population. Method: The rs1344706 genotype was determined in 1,025 SZ patients and 977 healthy controls using polymerase chain reaction restriction fragment length polymorphisms (PCR-RFLPs). The clinical SZ subtypes included paranoid, catatonic, disintegrated, and undifferentiated, diagnosed according to the Diagnostic and Statistical Manual of Mental Disorders-Fourth Edition IV (DSM-IV). Results: No significant differences in genotype and allele frequencies were found between controls and either the total SZ population (A > C, χ2 = 4.339, 2.994; p = 0.227, 0.087, respectively) or paranoid SZ patients (χ2 = 2.053, 0.002; p = 0.562, 0.973, respectively). However, there was a significant association between genotype frequency and SZ subtype (χ2 = 12.632, p = 0.049). Conclusions: We found no evidence that the ZNF804A SNP rs1344706 is a susceptibility locus for SZ. However, conflicting results from previous association studies may be due to genetic heterogeneity between different patient SZ subtypes.
Revisiting the Make-or-Buy Decision: Conveying Information by Outsourcing to Rivals
Authors: Arya Anil , Mittendorf Brian , Yoon Dae-Hee 
Published: July 2013

ABSTRACT
The textbook make-or-buy decision is typically described as choosing the cheaper of the two sourcing options. However, research in accounting has consistently demonstrated that strategic and informational considerations often complicate such seemingly straightforward criteria. In a similar vein, this paper shows that when a firm becomes privy to accounting information pertaining to its profitability, its sourcing choice has powerful informational reverberations. This is because input procurement from an outsider serves to convey both profitability information and strategic positioning. Conveying profitability information refers to the fact that the size of the input order provides the supplier a credible signal of the firm's internal accounting information and, thus, its relative ability to compete in the marketplace. Conveying strategic positioning refers to the fact that the upfront placement of the input order also informs the supplier about the firm's chosen strategic choices in the marketplace. We demonstrate that both sources of information conveyance together can point to a firm preferring to buy inputs from a retail rival even when it can make them internally at a lower cost. This penchant for outsourcing to a rival is more pronounced the more accurate the firm's accounting system.
Finnish–Hungarian Cooperation in Bryology; Memories from Excursions, Congresses and Research with Professor Tamás Pócs
Authors: Koponen Timo 
Published: July 2013

Abstract The paper describes Professor Tamás Pócs’ cooperation with Finnish bryologists and other cryptogam taxonomists. Cooperation began with exchange of reprints in 1966 and identification of African bryophyte specimens in 1973. In 1976, Timo Koponen visited Budapest and Eger, and joint work continued during a University of Helsinki Department of Botany student excursion to Tanzania in 1988. Tamás Pócs, then a professor at Sokoine Agricultural University, arranged the logistics for the preparatory visit of four teachers as well as for the excursion itself. Later, Pócs participated in the Congress of Eastern Asiatic Bryology, the EU-funded ‘Advanced instruction in bryology and lichenology’ (Large Scale Facility) program and the ‘Bryophyte Flora of the Huon Peninsula, Papua New Guinea’ project organized in Helsinki. He was elected a corresponding member of the Finnish Bryological Society in 2009.
Pleurozia Pocsii Sp. Nov. (Pleuroziaceae) from New Caledonia
Authors: Müller Frank 
Published: July 2013

Abstract A new species, Pleurozia pocsii (Pleuroziaceae) from New Caledonia, is described and illustrated. The species belongs in subgenus Diversifolia B. M. Thiers. Pleurozia pocsii is easily distinguished from the other species of the genus by the laciniate dorsal and ventral leaf lobe apices of the explanate-lobuled leaves, the laciniate bracts of the sterile gynoecia, and the strongly bulging cells at the apex of the dorsal lobules of the saccate-lobuled leaves.
A New Species of Mesoptychia (Lindb.) A. Evans from California
Authors: Crandall-Stotler Barbara , Stotler Raymond E. , Bakalin Vadim A. , Doyle William T. 
Published: July 2013

AbstractA small, endemic leafy liverwort found in the coastal redwood forests of Santa Cruz and Monterey Counties of California is described as a new species of Mesoptychia (Lindb.) A. Evans, i.e., Mesoptychia polymorpha Stotler, Crand.-Stotl. & Bakalin, sp. nov. This new taxon is morphologically related to the suite of small-leafed species of the genus, including M. badensis (Gottsche ex Rabenh.) L. Söderstr. & Váňa and M. morrisoncola (Horik.) L. Söderstr. & Váňa, but is unique within the genus in having mature vegetative leaves and bracts that are undivided and apically rounded to emarginate, with bilobed to retuse leaves of restricted occurrence. Although this polymorphic species is paroicous, perianths expand without fertilization and sporophytes are unknown.
New Taxa of Solenostoma and Plectocolea and Other Taxonomic Novelties Based on Study of Collections in the New York Botanical Garden Herbarium
Authors: Bakalin Vadim A. 
Published: July 2013

Abstract Six new taxa are described based on study of Jungermannia s.l. collections in herbarium NY. Solenostoma costaricanum Bakalin, sp. nov. is related to S. crassulum (Nees & Mont.) Steph., from which it differs in plant size, the presence of ventral stolons, perianth shape, spore and elater size. Plectocolea subbalfourii Bakalin, sp. nov. is related to Solenostoma (Plectocolea) balfourii (Váňa) Váňa, Hentschel & J. Heinrichs, from which it differs in rhizoid features and size of perigynium and midleaf cells. Solenostoma rubrum var. underwoodii Bakalin, var. nov., based on Nardia macounii Underwood, nom. nud., differs from var. rubrum in coloration and leaf structure features. Plectocolea yunnanensis Bakalin, sp. nov., belonging to the ‘Plectocolea truncata’ group, differs from related species in leaf structure and rhizoid features. Solenostoma gracillimum subsp. camiguinense Bakalin, subsp. nov. differs from the typical variety in perianth and leaf structure features. Solenostoma inundatum var. grandirete Bakalin, var. nov. differs from the typical variety in leaf structure. Additionally, it was found that the type specimen of Plectocolea micrantha Mitt. is paroicous, not dioicous. Critical study of type specimens of Jungermannia marcescens Mitt. and J. sanguinolentha Griff. showed that these taxa are not conspecific, and the new combination Solenostoma marcescens (Mitt.) Bakalin, comb. nov. is proposed.
Diplasiolejeunea Mayaykuensis (Lejeuneaceae, Marchantiophyta), a New Liverwort Species from Southern Ecuador
Authors: Schäfer-Verwimp Alfons , Nebel Martin , Heinrichs Jochen 
Published: July 2013

Abstract A new epiphytic species of Diplasiolejeunea (Spruce) Schiffn. from the Amazonian region of southern Ecuador is described and illustrated. Diplasiolejeunea mayaykuensis Schäf.-Verw. & Heinrichs, sp. nov. is characterized by ascending to squarrose leaves, narrowly ovate(-lanceolate) underleaf lobes with acute to subobtuse apices, well developed lobule teeth and lobules with strongly involute free margins. Morphologically, D. mayaykuensis closely resembles D. brunnea Steph. and D. cavifolia Steph. The locality is situated in the western escarpment of the Cordillera del Condor.