bluuebunny/crossref_metadata_2025 huggingface dataset:
Real Time Fracture Placement and Completion Design Using an Azimuthal LWD Sonic and Spectral Gamma Ray Analysis for an Anisotropic Unconventional Reservoir Evaluation
Authors: Amorocho Claudia , Langford Cory , Mejia Camilo
Published: October 2014

The geological complexities of shale formations dominated by lamination deposition mechanisms make formation evaluation a challenge for hydraulic fracture operations. Logging While Drilling technologies have evolved to provide valuable information for a reliable approach in anisotropic shales. One of the most frequent considerations is well productivity and how the new technologies and evaluation methods can help to mitigate the uncertainty of the completion and improve fracturing performance. The incorporation of the TIV anisotropy evaluation from LWD azimuthal acoustic measurements can help characterize the impact of the laminations stage by stage or even a more detailed cluster by cluster analysis.

Information from the LWD azimuthal sonic tool can help provide a better understanding in regards to the rock mechanical behavior in horizontal shale wells, as well as the brittleness interpretation providing a more realistic approach to the lamination structure of the shale deposition. Quantifying TIV anisotropy is a very important key evaluation factor to optimize the completion program likewise the well productivity. In conjunction with the LWD azimuthal sonic information, the LWD spectral gamma ray measures isotope concentrations (such as Uranium, Potassium, and Thorium) can be confidently integrated into the unconventional petrophysical interpretation calculations of Total Organic Content. This analysis is incorporated with the geomechanical and anisotropy evaluation to select the best fracture placement and design in an unconventional environment.

The anisotropic brittleness analysis identifies the zones where the best fracture propagation will be achieved while the petrophysical analysis indicates how productive these fractures should be. Through the geometric fracture simulation the best set of recommendations for the fracturing operation are developed to predict the conductivity area which contributes to the well productivity.

This paper will show the impact of the TIV anisotropy into the geomechanical evaluation, beginning with the unique real-time fracture placement methodology leading to an optimization of the anisotropy analysis to generate the best frac design to avoid expensive completion programs and reduce uncertainty on fracture placement evaluation.
Recovering the confidence to drill in a Field after dealing with a Blowout, the Managed Pressure Drilling approach. Operator finds an effective way to address the high potential for blowouts and drilling challenges in a field in Utah
Authors: Hernandez J. , Arnone M. , Callison R. , Shirley G.
Published: October 2014

After a blowout event that destroyed a rig, incurring in environmental issues as well as personnel injuries, loss of credibility for all parties involved in the drilling operation and loss of confidence for several other operators drilling in the area, a specific operator decided to proactively plan ahead for facing the possible challenges using a full automatic Managed Pressure Drilling technology called Microflux Control System (MFCS).

MFCS enabled the well to reach total depth with enhanced safety, drilling efficiency, and with fewer casing strings than originally planned. Early influx detection along with the ability to quickly increase BHP allowed for the use of a mud weight which was approximately 2.0 ppg lower than offset well data provided. Lower mud weights resulted in an increased ROP and improved drilling efficiency. The use of lower mud weights also enabled the exact pore pressure to be identified when overpressure zones where encountered. Ballooning events were quickly identified and unnecessary mud weight increases were avoided. Compared to offset wells, MPD saved 20 hrs to weight up mud given the apparent water influxes, which in the current MPD well were identified as a ballooning. For the offset well, at the depth of 4,260 ft, 17 hrs were spent increasing the MW from 9.1 ppg to 10.3 ppg due to the apparent water flow, in the MPD well case the MW was raised from 8.8 to 9.0 and it was done in MPD mode.

The casing was run through the RCD and returns aligned to the MPD system in order to maintain BHP constant and monitor for influxes/losses while running the casing to bottom. Without and MPD system, the well would have required to be rolled over to a Kill Mud Weight, which may have led to fluid losses while circulating with the casing at bottom. The casing cementing operation was conducted having the MPD system aligned to the returns as a closed loop system, obtaining excellent process quality monitoring and pressure control.
First Installation of Efficient and Accurate Multilaterals Stimulation Technology in Carbonate Oil Application
Authors: Rice Kevin , Jorgensen Thomas , Waters Jeremy
Published: October 2014

In many cases, carbonate oil wells are stimulated with open hole acid flush or acid fracturing treatments to increase productivity. Some of the challenges with fracturing stimulation are reservoir related, such as consistently stimulating all targeted intervals and intersecting the natural fracture network. The growth of hydraulic fractures in the vertical direction is difficult to predict, leading to the risk for entering unsought gas or water-bearing formation. Operations can be complex, costly and pose environmental challenges. A multilaterals stimulation technology (MST) has been developed and field tested to be a simple, efficient and more controllable method of stimulation with less environmental impact. The method uses less fluid, reduces the risk of groundwater contamination and eliminates stimulation fluid flowback disposal. This paper discusses the evolution of the technology, leading to the first pilot installation in a horizontal well in the Austin Chalk carbonate reservoir in Texas, during April of 2014. The pilot installation proved the stimulation technology's efficiency by creating 60 laterals, each 40 feet long, in a few hours pumping time. This installation is believed to be a world record for creating 60 laterals in less than 5 hours. The well's production response was significant, and productivity index was increased by 30 times compared to before the stimulation.
Wellbore Instability of Inclined Wells in Highly Layered Rocks — Bakken Case Study
Authors: Ostadhassan M. , Jabbari H. , Zamiran S. , Osouli A. , Oster B. , Lentz N.
Published: October 2014

The importance of the geomechanical modeling and wellbore instability analysis is increasing in the petroleum industry with recent growth of drilling plans in unconventional reservoirs. Recently, a large majority of field developments are occurring in shale oil and shale gas reservoirs as a novel source of energy. Many of these reservoirs are thin and highly layered, anisotropic and naturally fractured; these make their geomechanical modeling and wellbore instability analysis remarkably crucial; subsequently a good understanding of elastic properties of the formation such as Young's modulus, Poison's ratio and in-situ stresses are necessary for accurate results.

Bakken Formation is one of the major unconventional plays in North America which is identified by three distinct members: layered upper and lower shale and fractured middle dolomite. The thin beddings within the formation have made them extremely anisotropic, which originates from the platey shaped clay particles, high kerogen content plus the existence of natural fractures thus the wellbore instability analysis and modeling of this formation has become highly challenging. For this study elastic properties along with the petrophysical values are collected and reported from several numbers of core plugs along with wireline log data. Then, these values are used as input parameters in poroelasticity equations to calculate the magnitude of the principal stresses. Finally instability analysis especially in the inclined section of the well is carried out.

Finite Difference 3D numerical modeling was conducted under Mohr-Coulumb failure criterion with anisotropic assumptions to evaluate the deformations around the wellbore to locate instable regions. In addition, the effects of different inclination angles of the wellbore versus depth were studied. Results indicated a strong relation between the magnitude of the wellbore deformations with the the drilling inclination angle changing from vertical to horizontal which takes place in the direction of maximum horizontal principal stress. Stress contours are plotted around the wellbore shows zones of higher stress concentration and deformation. Various type of failure regions are developed as well.
The Association between Audit-Partner Quality and Engagement Quality: Evidence from Financial Report Misstatements
Authors: Wang Yanyan , Yu Lisheng , Zhao Yuping
Published: October 2014

We study whether audit-partner quality influences the probability of annual report misstatements (measured by restatements) and whether various levels of quality control attenuate such influences. We measure audit-partner quality with audit failure rate (i.e., the total number of audit failures associated with an audit partner divided by the total number of audit reports signed by the same partner). We report the following key findings. First, an audit partner's past audit failure rate is positively associated with the probability that the current year annual report that he/she audits is subsequently restated. This positive association is more pronounced for engagement partners (i.e., partners who actually conduct the audits) than for review partners (i.e., partners who review the audits). Incorporating audit-partner audit failure rates substantially increases the predictive power for future financial report restatements. Second, neither engagement-team-level nor audit-firm-level quality controls consistently attenuate engagement audit partners' influence on the probability of future restatements. Third, engagement audit partners' influence on the probability of future restatements becomes stronger for audits of more important clients. Taken together, the evidence suggests that, despite various levels of quality control, audit-partner quality significantly influences engagement quality and that such influences are exacerbated by the audit partners' own economic incentives.

JEL Classifications: M42.

Data Availability: Data used in this study are available from public sources.
Diamond Foods, Inc.: Anatomy and Motivations of Earnings Manipulation
Authors: Gujarathi Mahendra R.
Published: October 2014

Diamond Foods is America's largest walnut processor specializing in processing, marketing, and distributing nuts and snack products. This real-world case presents financial reporting issues around the commodities cost shifting strategy used by Diamond's management to falsify earnings. By delaying the recognition of a portion of the cost of walnuts acquired into later accounting periods, Diamond Foods materially underreported the cost of sales and overstated earnings in fiscal 2010 and 2011. The primary learning goal of the case is to help students understand the anatomy and motivations of earnings manipulation. Specifically, students will have the opportunity to (1) apply the FASB's Conceptual Framework to a real-world context, (2) determine the nature of errors and compute their numerical effects on financial statements, (3) understand motivations for earnings management and actions needed for managing earnings of future years, (4) explain the anatomy of financial reporting fraud by reconstructing journal entries, (5) prepare comparative financial statements for retroactive restatements, (6) explain the rationale for clawback provisions in compensation contracts, and (7) understand the difference between the real and accrual-based earnings management.
Using the Codification to Research a Complex Accounting Issue: The Case of Goodwill Impairment at Jackson Enterprises
Authors: McNellis Casey J. , Premuroso Ronald F. , Houmes Robert E.
Published: October 2014

This case is designed to help students develop research skills using the Financial Accounting Standards Board's (FASB) Accounting Standards Codification (Codification or ASC). The case also helps develop students' abilities to analyze and recommend alternatives for a complex accounting issue, goodwill impairment, which is very relevant in today's business world. This case can be used in an undergraduate or graduate accounting class, either in groups of students or as an individual student project.
Impaired cAMP Generation Contributes to Defective Glucose-Stimulated Insulin Secretion After Long-term Exposure to Palmitate
Authors: Tian Geng , Sol E-ri Maria , Xu Yunjian , Shuai Hongyan , Tengholm Anders
Published: October 2014

Chronic palmitate exposure impairs glucose-stimulated insulin secretion and other aspects of β-cell function, but the underlying mechanisms are not known. Using various live-cell fluorescence imaging approaches, we show here that long-term palmitate treatment influences cAMP signaling in pancreatic β-cells. Glucose stimulation of mouse and human β-cells induced oscillations of the subplasma-membrane cAMP concentration, but after 48 h exposure to palmitate, most β-cells failed to increase cAMP in response to glucose. In contrast, GLP-1–triggered cAMP formation and glucose- and depolarization-induced increases in cytoplasmic Ca2+ concentration were unaffected by the fatty acid treatment. Insulin secretion from control β-cells was pulsatile, but the response deteriorated after long-term palmitate exposure. Palmitate-treated mouse islets showed reduced expression of adenylyl cyclase 9, and knockdown of this protein in insulinoma cells reduced the glucose-stimulated cAMP response and insulin secretion. We conclude that impaired glucose-induced generation of cAMP is an important determinant of defective insulin secretion after chronic palmitate exposure.
Determinants of child malnutrition in Bangladesh - A Multivariate Approach
Authors: Fazle Rabbi Ahbab Mohammad , Karmaker Shamal Chandra
Published: October 2014

Objective: Malnutrition is referred as the greatest single threat to the world’s public health, especially for the developing countries. Nutritional status is determined anthropometrically and it is outcome of complex interactions between biological, socio-economical variables. This study is conducted to identify the significant determinants of child malnutrition in Bangladesh. Method: Using BDHS-2007 data, Total 5312 cases are included in the present study. Multivariate techniques have been applied in this study to obtain significant determinants of child malnutrition. Results: Factor analysis revealed six factors as covariate of malnutrition; where two factors are socio-economical, others are biological and bio-social. Hence linear discriminant analysis is used to clarify the efficiency of obtained factors in malnutrition scenario; which imply that the obtained factors are accurate for approximately 60 percent observations. Conclusion: The obtained results suggest that, consciousness should be raised to improve socio-economic and maternal health conditions to improve the scenario of child malnutrition. DOI: http://dx.doi.org/10.3126/ajms.v6i2.10404   Asian Journal of Medical Sciences Vol.6(2) 2015 85-89
A neglected case of Sacrococcygeal teratoma in a neonate
Authors: Mondal Monojit , Biswas Biswajit , Roy Atanu , Ari Abhijit , Nayek Kaustav , Datta Asok Kumar , Rana Kriti Sundar , Banerji Nayan
Published: October 2014

Sacrococcygeal teratoma (SCT), although rare, is the most common congenital neoplasm in neonates. A mass in the sacrococcygeal region at the time of birth is the usual presentation. Routine antenatal abdominal ultrasound of mother can detect almost all the cases. The prognosis is favorable when diagnosis is done antenatally and proper management is instituted soon after the baby is born. Presented herein a 2 days old neonate with a neglected SCT who died unfortunately due to massive bleeding from the tumor. A brief review of the literature has been presented to make everyone aware of the condition so that future recurrence of such sad events may be avoided.DOI: http://dx.doi.org/10.3126/ajms.v6i2.10448Asian Journal of Medical Sciences Vol.6(2) 2015 108-110
ERCP complicated by pseudoanerysm of right hepatic artery: A rare case report
Authors: Wagay Mohmed Imran , Wani Gh Mohammad , Choh Naseer Ahmad , Dar Owvass Hamied
Published: October 2014

Endoscopic Retrograde Cholangio-Pancreatography (ERCP) has advantage of having bothdiagnostic and therapeutic utility and most common indication for endoscopic sphinterotomyis choledocholithiasis. Therapeutic ERCP is quite often associated with complications, mostcommon being acute pancreatitis followed by bleeding. Most common source of bleedingis small branches of pancreaticoduodenal artery (PDA) which lie close to papilla. We reporta rare case of leaking right hepatic artery pseudoanerysm following clearance of commonbile duct (CBD) stones by ERCP presenting with shock and upper GI bleed.DOI: http://dx.doi.org/10.3126/ajms.v6i2.10546Asian Journal of Medical Sciences Vol.6(2) 2015 115-117
Usage of diuretics among diabetic-hypertensive patients
Authors: Shastry Rajeshwari , Adhikari M.R. Prabha , Ullal Sheetal D. , Kotian Shashidhar
Published: October 2014

Background: Hypertension is more common in diabetics than in non-diabetic patients. An aggressive approach to the diagnosis and treatment of hypertension in patients with diabetes is required in order to substantially reduce the incidence of both macro-vascular and micro-vascular complications. The role of diuretics in the treatment of hypertension as first line or second line drugs is a provoking debate, hence we studied the usage of diuretics and their effects on BP and glycemic control among diabetic-hypertensive patients.Methods: This cross sectional study was carried out for a period of six months in a tertiary care teaching hospital. Patients’ details such as age, gender, height, weight, comorbid diseases, blood pressure, eGFR along with duration of diabetes and hypertension and drugs prescribed for hypertension were noted. Data were analyzed using descriptive statistics.Results: A total of 336 diabetic-hypertensiveswith a mean age of 64.55±9.51 years were included. Fortyfive patients were on diuretics,two (4.4%) of whom were on diuretic monotherapy, 16 (35.6%) on two drug combinations (Diuretic + ACEI or ARB), 21 (46.7%) on three drug combinations (diuretics + ARB & BBs or diuretic + ACEI & BB or diuretic + ARB &CCB) and six (13.3%) were on four drug combinations (diuretics + ARB, CCB & BB). Among the patients on diuretic combination therapy BP was well controlled in 23 (51%) patients and the glycemic control was comparable to those not on diuretics.Conclusion: In the present study the usage of diuretics was consistent with the guidelines. About 13% of diabetic-hypertensive patients were on diuretic treatment. The control of BP in patients on diuretics was not satisfactory, but there was no worsening of glycemic control compared to other antihypertensive therapy. This shows that low dose thiazides in combination with other antihypertensives can be safe in diabetic-hypertensive patients however their efficacy needs further scrutiny. DOI: http://dx.doi.org/10.3126/ajms.v6i2.10582Asian Journal of Medical Sciences Vol.6(2) 2015 15-18
Oral Health status of 3-6 year old children and their mother’s oral health related knowledge, attitude and practices in Mysore City, India
Authors: Bennadi Darshana , Reddy C. V.K. , Sunitha S. , Kshetrimayum Nandita
Published: October 2014

Aims and Objectives: The study was carried out to assess oral health status of 3-6 year old children and their mother’s oral health related knowledge, attitude and practices in Mysore city. Moreover, this study also carried out to determine whether mother’s oral health related knowledge, attitude and practices influences oral health of their children. Materials and Methods: A total of 500 children belonging to the age group of 3-6 years old attending both governments sponsored and private preschools from five sectors accompanied by their mothers formed the study group. Oral health status was assessed by using decayed missing filled teeth index (dmft) and plaque index. Mother’s knowledge, attitude and practices were assessed by direct contact with mothers using closed ended questionnaire. Results: The results of the study showed that the prevalence of dental caries among children was 64% with mean dmft of 3.20 ± 3.08 and mean plaque scores was 0.87 ± 0.33. There was significant correlation between plaque scores and dmft. dmft and plaque score was higher in older individuals and the difference was highly significant. Mean plaque score was more among the government preschool children (1.02 ± 0.31). 46% of mothers had medium level knowledge, 63.2% mothers had average attitude and 51% mothers had high level practices related to oral health. An inverse relationship was found between mean dmft, caries prevalence, mean plaque score in children and mother’s knowledge, attitude and practices about oral health and the findings were highly significant. Conclusion: Results showed that mother’s oral health related knowledge; attitude and practices had influence on oral health status of their children  DOI: http://dx.doi.org/10.3126/ajms.v6i2.11097 Asian Journal of Medical Sciences Vol.6(2) 2015 66-71
Hepatic encephalopathy in chronic liver disease; predisposing factors in a developing country
Authors: Qazi Arisar Fakhar Ali , Khan Shameem Behram , Umar Anam
Published: October 2014

Objective: To find out the risk factors for developing Hepatic Encephalopathy in patients suffering from Chronic liver disease.Background: Hepatic encephalopathy (HE) is a neuropsychiatric disorder that is caused by liver damage.  In its pathology, alterations in normal brain function are associated with an increase in blood ammonia, benzodiazepine like substances, products of neurotoxic fatty acids, and other gut derived toxins, which gain access to the brain as a result of liver dysfunction. Study Design: Hospital based descriptive, cross sectional study. Setting: Medical Unit 1, Ward- 5, Jinnah Post Graduate Medical Centre, Karachi.Duration:  July 2013 to December 2013Patients and Methods: About 150 patients admitted in medical unit 1 with a diagnosis of chronic liver disease in a state of hepatic encephalopathy were included in this study. Patients suffering from viral or bacterial encephalitis, stroke, brain tumor, Wernicke’s encephalopathy were excluded from the study.Results and Observations: There were 96 (64%) female and 54 (36%) were male patients. Mean age of the patients was 52.45 (±12.271) years. 80 (53.33%) patients were having constipation. Infection was found in 55 (36.66%) cases. Upper GI Bleed was present in 51 (34%) patients. 44 (29.33%) patients had moderate to severe electrolyte imbalance as the cause. Constipation alone was the cause in 11.33% of cases. More than one factor was found to be responsible in around 56% of patients while in 6.6% of cases none of these precipitating factors was isolated.Conclusion: Constipation is the commonest cause of hepatic encephalopathy followed by infection, upper GI bleed and electrolyte imbalance.DOI: http://dx.doi.org/10.3126/ajms.v6i2.11099Asian Journal of Medical Sciences Vol.6(2) 2015 36-43
Effect of prolong consumption of crude Aloe barbadensis (Aloe vera) gel on haematological indices in rats
Authors: Nku C. O. , Ofem O. E. , Okon U. A.
Published: October 2014

Background: Aloe vera is a succulent perennial plant that belongs to the liliaceae family and to a large family called xeroids. It is a magical plant with vast healing properties, but there is paucity in scientific literature on it effects on haematological parameters. The effect of persistent consumption of crude aqueous extract of Aloe vera on haematological indices of albino Wistar rats was investigated in this study.Methods: Twenty four rats were randomly assigned into three groups of eight rats each. Group 1 (control) received 0.26mL of normal saline o.p. Group 2 received 0.26mL of aloe vera extract for 2 weeks while group 3 received 0.26mL of aloe vera extract for 4 weeks p.o. once daily. All animals received drinking water and normal rat chow ad libitum.Results: Results revealed that the control group had a mean PCV of 37.50 ±0.98%; Hb, 11.40 ±0.39g/dL; RBC, 6.91 ±0.35 x106 cells/µL; WBC, 4.36 ±0.54 x103 cells/µL and platelet count, 670.13 ±41.01 x103 cells/µL. These blood parameters were not significantly different in group 2 animals compared with controls, but were significantly higher in group 3 rats compared with controls. Differential WBC counts were as follows for control values: neutrophils, 23.25 ±2.39%; lymphocytes, 72.88 ± 2.55%; monocytes, 0.13 ±0.13%; eosinophils, 3.00 ±0.71% and basophils, 0.13 ±0.12%. Lymphocytes were significantly (p<0.05) higher in group 3 compared with control group.Conclusion: Aloe vera extract contains phytochemicals that boost blood parameters and immunity on prolong consumption. DOI: http://dx.doi.org/10.3126/ajms.v6i2.11106Asian Journal of Medical Sciences Vol.6(2) 2015 58-61
Influence of Temperature and Ultrasonic Treatment on Preparation of Titanium Phosphates and Their Powder Properties
Authors: Onoda Hiroaki , Fujikado Syohei
Published: October 2014

Catalytically active titanium dioxide is conventionally used as a white pigment for cosmetics, but undesirably induces a certain degree of decomposition of sebum on the skin on exposure to ultraviolet radiation in sunlight. In this work, titanium phosphates were prepared as a novel white pigment for cosmetics using titanium sulfate and phosphoric acid at various temperatures, with/without ultrasonic treatment. The chemical composition, powder properties, photocatalytic activity, color phase, moisture retention, and smoothness of the phosphates were evaluated. These titanium phosphates had less photocatalytic activity than titanium dioxide, which should be beneficial for protecting sebum on the skin. Samples prepared with ultrasonic treatment had lower visible light absorption than those not subjected to ultrasonication. The sample prepared at 40 °C with ultrasonic treatment had higher moisture retention capacity than those prepared under other conditions. Samples prepared at 40 °C had lower slipping resistance than samples prepared at 7 °C.
Characterization and Quantification of the Compounds of the Ethanolic Extract from Caesalpinia ferrea Stem Bark and Evaluation of Their Mutagenic Activity
Authors: Wyrepkowski Carlos , Gomes da Costa Daryne , Sinhorin Adilson , Vilegas Wagner , De Grandis Rone , Resende Flavia , Varanda Eliana , Dos Santos Lourdes
Published: October 2014

Caesalpinia ferrea Martius has traditionally been used in Brazil for many medicinal purposes, such as the treatment of bronchitis, diabetes and wounds. Despite its use as a medicinal plant, there is still no data regarding the genotoxic effect of the stem bark. This present work aims to assess the qualitative and quantitative profiles of the ethanolic extract from the stem bark of C. ferrea and to evaluate its mutagenic activity, using a Salmonella/microsome assay for this species. As a result, a total of twenty compounds were identified by Flow Injection Analysis Electrospray Ionization Ion Trap Mass Spectrometry (FIA-ESI-IT-MS/MSn) in the ethanolic extract from the stem bark of C. ferrea. Hydrolyzable tannins predominated, principally gallic acid derivatives. The HPLC-DAD method was developed for rapid quantification of six gallic acid compounds and ellagic acid derivatives. C. ferrea is widely used in Brazil, and the absence of any mutagenic effect in the Salmonella/microsome assay is important for pharmacological purposes and the safe use of this plant.
Active Sensing and Its Application to Sensor Node Reconfiguration
Authors: Lee Sooyong
Published: October 2014

This paper presents a perturbation/correlation-based active sensing method and its application to sensor node configuration for environment monitoring. Sensor networks are widely used as data measurement tools, especially in dangerous environments. For large scale environment monitoring, a large number of nodes is required. For optimal measurements, the placement of nodes is very important. Nonlinear spring force-based configuration is introduced. Perturbation/correlation-based estimation of the gradient is developed and it is much more robust because it does not require any differentiation. An algorithm for tuning the stiffness using the estimated gradient for node reconfiguration is presented. The performance of the proposed algorithm is discussed with simulation results.
Comparison and Characterization of Android-Based Fall Detection Systems
Authors: Luque Rafael , Casilari Eduardo , Morón María-José , Redondo Gema
Published: October 2014

Falls are a foremost source of injuries and hospitalization for seniors. The adoption of automatic fall detection mechanisms can noticeably reduce the response time of the medical staff or caregivers when a fall takes place. Smartphones are being increasingly proposed as wearable, cost-effective and not-intrusive systems for fall detection. The exploitation of smartphones’ potential (and in particular, the Android Operating System) can benefit from the wide implantation, the growing computational capabilities and the diversity of communication interfaces and embedded sensors of these personal devices. After revising the state-of-the-art on this matter, this study develops an experimental testbed to assess the performance of different fall detection algorithms that ground their decisions on the analysis of the inertial data registered by the accelerometer of the smartphone. Results obtained in a real testbed with diverse individuals indicate that the accuracy of the accelerometry-based techniques to identify the falls depends strongly on the fall pattern. The performed tests also show the difficulty to set detection acceleration thresholds that allow achieving a good trade-off between false negatives (falls that remain unnoticed) and false positives (conventional movements that are erroneously classified as falls). In any case, the study of the evolution of the battery drain reveals that the extra power consumption introduced by the Android monitoring applications cannot be neglected when evaluating the autonomy and even the viability of fall detection systems.
Full-Time Student, Part-time Employee: Capturing the Effects of Socialization Influences On Affective Commitment for Student Employees
Authors: Odio Michael A. , Wells Janelle , Kerwin Shannon
Published: October 2014

Student employees are a valuable human resource for university sports venues, recreation, and athletic departments. This study examines sources of socialization influence (i.e., orientation, coworkers, student supervisors, and administration) and their role in fostering the affective organizational commitment of part-time student employees of a university-operated sports and entertainment venue. The student employees' organizational identity is used as a mediator to explain how socialization affects commitment. Results show that student supervisors and administrators as agents of socialization are significant predictors of affective commitment and that organizational identity fully mediates the relationship between student supervisors and affective commitment and partially mediates the relationship between administrators and affective commitment. This finding is conceptually relevant given the part-time and transient nature of student employees, and leaders in this context typically represent stable figures that can help facilitate identity formation.
The Nature of Perceived Organizational Support for Sport Event Volunteers
Authors: Aisbett Laura , Hoye Russell
Published: October 2014

This article presents the findings of a study that explored the nature of perceived organizational support (POS) of volunteers at Bicycle Victoria's 2010Around the Bay in a Daycycling event. It presents evidence of the antecedents that exist for volunteers at a sport event, based on a series of focus groups and individual interviews with both general and team leader volunteers. The results suggest that sport event volunteers' POS largely comprises the support of their immediate supervisor, and the volunteers' ability to make decisions regarding their role, rather than other drivers that are evident within paid employment settings.
MATHEMATICAL MODEL OF ELECTRODIFFUSION, DISSOCIATION AND RECOMBINATION IN THE DIFFUSIVE LAYER
Authors: Shobukhov Andrey V. , Savenkova Nadejda P. , Kuzmin Runar N. , Maximov Dmitry S.
Published: October 2014

We study a mathematical model of electrochemical processes in the thin diffusive layer of polymer electrolyte between the electrode and the bulk. We consider diffusion, migration, dissociation and recombination of positive and negative ions in the electric field that take place in this region under various boundary conditions. We demonstrate that the unique stable steady state of the electrochemical system is determined by the ratio of dissociation to recombination. This state attracts time-dependent solutions of the model, but their convergence strongly depends on the electroneutrality of the bulk.
QUANTITATIVE ECONOMICS AS A SCIENTIFIC APPROACH TO THE SOLUTION OF PROBLEMS OF A COMPLEX NATURE – IN HONOR OF PROFESSOR WILLEM KAREL M. BRAUERS ON THE OCCASION OF HIS 90TH BIRTHDAY
Authors: Masri Hatem
Published: October 2014

In the previous century Quantitative Economics substantially evolved in the direction of Mathematical Economics, Econometrics and Operational Research. Professor Willem Karel M. Brauers sees it mainly as a scientific approach to the solutions of problems of a complex nature by Methods such as Input-Output Analysis and Multi-Objective Optimization. At the occasion of his 90th birthday this article highlights the research of Professor Willem Karel M. Brauers, presents a review of his extensive scientific work and lists some of his publications.
Quand la dépendance est une question de survie : pratique clinique auprès de patients dialysés
Authors: Riazuelo Hélène , Cupa Dominique , Chaudoye Guillemine
Published: October 2014

À l’annonce d’une insuffisance rénale terminale, une certitude : à plus ou moins long terme le patient sera mis en dialyse ou greffé. Il ne peut compter sur son propre corps devenu incapable de le faire vivre. Cela lui inflige une profonde blessure narcissique, un narcissisme primaire qui peut être touché, lui montrant son impuissance radicale puisqu’il est obligé de faire appel à une machine ou au rein d’un autre pour survivre. La machine et les soignants en charge du rein artificiel peuvent devenir, au niveau fantasmatique, une sorte de mère toute-puissante, un vampire dangereux ou une autre figure de notre univers psychique archaïque. Le dialysé est, comme le nourrisson, dépendant de façon absolue (au sens de Winnicott) de la machine et de l’équipe médicale et soignante. Face aux incertitudes liées à son état, le patient peut chercher auprès des soignants une aide pour les rendre supportables psychiquement, pour les contenir. Face à la maladie chronique, face à ce traitement érodant (physiquement et psychiquement) qu’est la dialyse, le narcissisme comme gardien de vie est alors central.
Le sens incorporé (visite aux animaux)
Authors: Bailly Jean-Christophe
Published: October 2014

Résumé Jean-Christophe Bailly est écrivain, poète, dramaturge, essayiste. Le texte suivant est extrait d’un récent ouvrage Le Sens incorporé (visite aux animaux) . En 1991, il avait publié avec Gilles Aillaud un très beau livre sur les animaux L’Oiseau Nyiro , aux éditions La Dogana. Dans La Fin de l’hymne , il leur consacrait le chapitre intitulé Un abîme de la pensée. Dans ce passage, Jean-Christophe Bailly approche et décrit la mobilité inventive de la nature. Il montre comment celle-ci dément toute prétention théorique à réduire son activité à une stricte reproduction de formes, qui serait réglementée par l’arrêt sur la butée de l’instinct.
Les morts-vivants
Authors: Rouabhi Mohamed
Published: October 2014

Résumé À quelques exceptions près, Mohamed Rouabhi a écrit dans Vacarme des textes sur les séjours qu’il a passés en Palestine, sur les ateliers d’écriture qu’il a animés à Ramallah, Bethléem, Jérusalem. Sa pièce El menfi (L’exilé) a été créée en juillet 2000 à Ramallah dans la mise en scène de Nadine Varoutsikos ; elle sera reprise en janvier 2001 à Épinay-sur-Seine. Cette fois-ci, il a préféré écrire sur les morts-vivants.
Les voix du tram
Authors: Tiberghien Gilles A.
Published: October 2014

Résumé Rencontre entre Gilles A. Tiberghien et Rodolphe Burger.
Research of ITO Transparent Conductive
Authors: He Ping , Zhai Bo Li , Yi Yan
Published: October 2014

Indium tin oxide (ITO) as a transparent conductive film (TCO) is a kind of oxide film of the most widely used which is the N type semiconductor material In2O3 doped with Sn, which has many excellent properties based on: conductivity, optical property, processing property and chemical stability etc.In recent years, which has attracted widespread attention, and it is widely used in all aspects of life such as transportation, aerospace, defense, building, solar energy and high-tech fields. Therefore, it is an inevitable trend of social development in the future understanding and improving basic properties and preparation methods of the ITO thin film. This paper summarized the present research situation of ITO transparent conductive film current from the two aspects of characteristics and manufacturing process of ITO films; then reviewed the application status of ITO transparent conductive films in recent years; finally, the future development trend of Ito transparent conductive made a brand-new outlook by analyzing the current situation of the above.
Study of Three-Kettle Coagulating Process in Production of Cis-1,4-Polybutadiene Rubber
Authors: Xu Jing
Published: October 2014

with the economic development, the three-kettle condensation process is more and more widely applied. This paper introduces three-kettle condensation and its features and advantages. Comparing the changes of steam consumption and solvent residue in rubber before and after the modification of the cis-1,4-polybutadiene rubber condensation system, the obtained result shows that compared with the two-kettle condensation, the three-kettle condensation system can steam by 25%, and also can reduce 50% of the solvent residual liquid in rubber. The results after the process optimization on three-kettle condensation system show that the bottom temperature of No.1 kettle is 85 °C, and the top pressure is 48 kPa; the bottom temperature of No. 2 kettle is 102 °C, and the top pressure is 90 kPa; and the top pressure of No. 3 kettle is 10 kPa. In addition, here points out the differences in optimization, and gives suggestions to the optimization.
Study on the Model of Household Electrical Appliances
Authors: Wang Dan , Liu Bao Jing
Published: October 2014

It is demonstrated that the benign development in the small household electrical appliances market, industrial design is indispensable, enterprises should improve product development system, enhance the competitiveness of enterprises, must rely on the industrial design, enterprises should establish the development needs of the product development mode, must change the traditional mode of development, introduction to industrial design as the leading product development new pattern industrial design, let industrial design to dominate the whole product development process.
Research on Modeling Design in Composite Molding
Authors: Liu Yun Ling
Published: October 2014

According to the design of composite mould manufacturing technology, the paper discusses the present situation and development trends of domestic and international research, focuses on the analysis of forming processes for composite materials, composite molding technology. At the same time, this paper presents a design method of composite technology of INVAR steel mold structure based on multi point forming of RTM technology, this method can well solve the design and manufacturing of composite mold problems.
Study on Form Process of Resin Composite Material and Graphic Artist Designer
Authors: Wu Li Ying
Published: October 2014

The paper analyze development process of the advanced resin matrix composite materials forming technology, that is low pressure molding, pultrusion process, molding, filament winding forming process, placement molding process, molding process of RTM, and analyze the key technology in the development process, to study the evolvement of advanced composite material molding process, so as to explore the future development direction of forming resin based composite material technology.
Cushion Packaging CAD System Based on Pro/Engineer
Authors: Yuan Yan , Cao Le
Published: October 2014

Software development was conducted with Visual C++ based on Pro/ENGINEER system and its secondary development tool Pro/TOOLKIT, by taking the special-shaped products as research objects, thus to realize the cushion packaging CAD system integrating the product information data processing, cushion design calculation, corrugated case design calculation. The overall composition, main functional modules of cushion packaging CAD system, as well as the system design and implementation were illustrated.
Control System Design of Rotary Inverted Pendulum
Authors: Wang Li Qian , Hu Kai
Published: October 2014

In this paper we study the control system of single stage rotary inverted pendulum, and put forwards the controller design based on the core of STM32. In control strategy we use the classical control theory-PID control algorithm, which realizes the closed-loop control of rotating arm and swing rod for the single stage rotary inverted pendulum. The final test results show that the control strategy is effective.
Study on the Processing and Simulation of End-Gear Based on CNC Theory
Authors: Wang Li Mei
Published: October 2014

Based on NC machining principle of hypoid gears and NC machining with high efficiency quality, This paper discusses the feasibility of the hypoid gear processing, establishes the mathematical model of face gear wheel hypoid milling machining adjustment, that will be take the basic data into vertical machining center machine tool. Through analyze the principle of the oscillating tooth face gear transmission, and compared the structure differences between face gear and bevel gear, and the realization processing method of face gear is discussed by improving the bevel gear shaper.
Design of Wireless Sensor Network Database Based on Message Transfer
Authors: Liu Fu Mei , Qu Wen Liang
Published: October 2014

In this paper, according to the needs of the application, discussed the necessity of constructing the database of wireless sensor network, and analyzes the difference in function of the traditional database management system, and the problems faced in the implementation; the architecture of the system is analyzed in detail, including the database and network node on the function composition, and between nodes cooperate to complete the key technology of query.
Optimized Design of Scene Management Based on Program Tree Diagnosis
Authors: Xu Wei Min , Chen Xiao Ju , Lv Wei
Published: October 2014

The scene is considered as the management foothold of production, technology, quality, equipments, safety, and environment for workshop. Optimizing the scene management is not only a necessity for enhancing diathesis and strengthening development ability, but also a consciousness of strengthening the management involvement of employees. Therefore, scientific optimization of scene management is an inevitable requirement for promoting the overall management level.
Frequency Measurement Method Based on Signal Delay Detection
Authors: Wu Wen Quan , Yu Hua
Published: October 2014

A frequency measurement method based on signal delay detection is presented. The method adopts multi-path same delay line to generate multi-path delayed signal whose period is almost the same with that of the reference signal, the average delay time of two adjacent signals that are detected is selected as the interval between the reference signal's rising edge and gate's opening and closing time to calculate the frequency of the measured signal. Error analysis and measurement uncertainty evaluation show that the precision of measurement of the method is determined by the delay time. Experimental data verify that the method could ensure testing speed while effectively reduce the error of ± 1 count.
Design of Sine Wave Inverter Power Supply Based on STM32
Authors: Wang Ling
Published: October 2014

The paper design a high performance 20KW grid inverter based on STM processor, and describes the overall structure of the inverter, and design the hardware circuit and the software design scheme; finally produce the prototype and test. The experimental results show that: in the condition of rated power inverter can stabilize output valid values of 220V 3%, frequency is sine wave AC 50HZ, output voltage has small harmonic content and high reliability, and has a good application prospect in the field of photovoltaic power generation.
Study on the Properties of SiC/Mullite Porous Ceramics Based on ANSYS Numerical Simulation
Authors: Chao Yang
Published: October 2014

In this paper, we use foam injection coagulation method to fabricate SiC/mullite porous ceramic with porosity 38-80%. In order to study the performance of the ceramic, we use the principle of cavity to establish the fourteen surfaces model of the SiC/ mullite porous ceramics, and use the ANSYS finite element simulation software to simulate the performance of ceramic, and do simulation on the mechanical properties of the ceramics. In order to study the influence of different wall thickness and curvature on the properties of ceramics, we calculate the structure stress distribution of fourteen surfaces when wall thickness is 0.4 and 0.5mm. When the wall thickness is 0.2mm, we study the structure stress distribution with radius 0.1mm and 0.2mm. So we obtain the influence of wall thickness and curvature radius on the properties of porous ceramics. It provides valuable reference data for the study on porous ceramics.
Study of Thiophene in Phthalocyanine Sensitized SnO2 Photo Catalytic Oxidation’s Oil
Authors: Feng Cui Lan
Published: October 2014

Based on phthalocyanines --SnO2 as a photo catalyst, this paper uses the degrading difference of thiophene by various catalysts under ultraviolet and visible light irradiation conditions to compare the catalytic effects of the different phthalocyanine compounds --SnO2 photosensitive catalysts, and summarize the reasons and laws to influence the catalysts’ catalytic performance, and analyze the kinetic process of photocatalytic oxidation reaction, and initially discuss kinetics of photocatalytic oxidation reaction and its products.