16 results on '"Adam Bouras"'
Search Results
2. Breast Cancer Population Screening Program Results in Early Detection and Reduced Treatment and Health Care Costs for Medicaid
- Author
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Adam Bouras, Shumei Yun, Sherri G. Homan, Chester L. Schmaltz, Jill Lucht, and Philomina Gwanfogbe
- Subjects
Marginal cost ,Pediatrics ,medicine.medical_specialty ,MEDLINE ,Breast Neoplasms ,Context (language use) ,03 medical and health sciences ,0302 clinical medicine ,Breast cancer ,Health care ,medicine ,Humans ,030212 general & internal medicine ,Stage (cooking) ,Early Detection of Cancer ,health care economics and organizations ,030505 public health ,Medicaid ,business.industry ,Health Policy ,Public Health, Environmental and Occupational Health ,Health Care Costs ,medicine.disease ,United States ,Cancer registry ,Female ,Health Expenditures ,0305 other medical science ,business - Abstract
Context The National Breast and Cervical Cancer Early Detection Program has increased access to screening services for low-income females since 1991; however, evaluation information from states implementing the program is sparse. This study evaluates the impact of the Missouri program, Show Me Healthy Women (SMHW), on early detection and treatment cost. Objective To estimate breast cancer treatment and health care services costs by stage at diagnosis among Missouri's Medicaid beneficiaries and assess the SMHW program impact. Design Analyzed Missouri Medicaid claims linked with Missouri Cancer Registry data for cases diagnosed 2008-2012 (N = 1388) to obtain unadjusted and incremental costs of female breast cancer treatment and follow-up care at 6, 12, and 24 months following diagnosis. Noncancer controls (N = 3840) were matched on age, race, and disability to determine usual health care cost. Regression analyses estimated the impact of stage at diagnosis on expenditures and incremental cost. Show Me Healthy Women participants were compared with other breast cancer patients on stage at diagnosis. A comparison of SMHW participants to themselves had they not been enrolled in the program was analyzed to determine cost savings. Results Expenditures increased by stage at diagnosis from in situ to distant with unadjusted cost at 24 months ranging from $50 245 for in situ cancers to $152 431 for distant cancers. Incremental costs increased by stage at diagnosis from 6 months at $7346, $11 859, $21 501, and $20 235 for in situ, localized, regional, and distant breast cancers, respectively, to $9728, $17 056, $38 840, and $44 409 at 24 months. A significantly higher proportion of SMHW participants were diagnosed at an early stage resulting in lower unadjusted expenditures and cost savings. Conclusions Although breast cancer treatment costs increased by stage at diagnosis, the population screening program's significant impact on early diagnosis resulted in important cost savings over time for Medicaid.
- Published
- 2019
3. Efficacy of Short Message Service Text Messaging Interventions for Postoperative Pain Management: Systematic Review
- Author
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Christoph Buck, Christian Keweloh, Adam Bouras, Eduardo J Simoes, and Publica
- Subjects
Pain, Postoperative ,Text Messaging ,short message service (SMS) ,systematic literature review ,Reproducibility of Results ,Information technology ,Review ,T58.5-58.64 ,Telemedicine ,United States ,pain management ,Research Design ,opioid ,Humans ,postoperative ,Public aspects of medicine ,RA1-1270 - Abstract
BackgroundAddiction to opiates and synthetic opioids poses a major threat to public health worldwide, with pharmaceutical opioids prescribed to manage pain constituting the main problem. To counteract this threat, suitable pain management strategies should be implemented in health care. Monitoring pain management seems to be feasible using telemedicine with a certain degree of resource intensity and digitization. As a communication channel for this type of monitoring, SMS appears to be a valid alternative. ObjectiveThe aim of this systematic literature review was to (1) provide information on the state of research regarding postoperative pain management via SMS, (2) establish a basic understanding of SMS-based pain management, and (3) provide insight into the feasibility of these management strategies. The research question was as follows: Is postoperative pain management feasible and effective utilizing SMS? MethodsA systematic literature review was performed mainly following the PRISMA guidelines and another guide on performing a systematic literature review for information systems–related research. A search string was developed based on the objectives and research question, and eight databases were searched. ResultsThe initial search resulted in 2083 records, which could be narrowed down by applying various exclusion criteria. Thereby, 11 articles were identified as relevant, which were accordingly analyzed and evaluated by full-text screening. In all articles, pain management interventions were performed using SMS communication between health care professionals and patients or their legal guardians. A prospective approach was predominantly chosen as the study design (91%) with the leading research objective of determining the intervention’s feasibility (73%). The primary reason for sending SMS messages was to monitor patients (64%). Overall, the use of SMS improved adherence, acceptance, and satisfaction regarding postoperative pain management. With an average response rate of approximately 89.5% (SD 3.8%), the reliability of SMS as a communication and monitoring tool was further emphasized. This response rate is significantly higher than that for email interventions (66.63%, P
- Published
- 2021
4. Correction: Non-Hispanic White Mothers’ Willingness to Share Personal Health Data With Researchers: Survey Results From an Opt-in Panel (Preprint)
- Author
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Adam Bouras, Eduardo J Simoes, Suzanne Boren, Lanis Hicks, Iris Zachary, Christoph Buck, Satvinder Dhingra, and Richard Ellis
- Abstract
UNSTRUCTURED Advances in information communication technology provide researchers with the opportunity to access and collect continuous and granular data from enrolled participants. However, recruiting study participants who are willing to disclose their health data has been challenging for researchers. These challenges can be related to socioeconomic status, the source of data, and privacy concerns about sharing health information, which affect data-sharing behaviors. This study aimed to assess healthy non-Hispanic white mothers’ attitudes in five areas: motivation to share data, concern with data use, desire to keep health information anonymous, use of patient portal and willingness to share anonymous data with researchers. This cross-sectional study was conducted on 622 healthy non-Hispanic white mothers raising healthy children. From a Web-based survey with 51 questions, we selected 15 questions for further analysis. These questions focused on attitudes and beliefs toward data sharing, internet use, interest in future research, and sociodemographic and health questions about mothers and their children. Data analysis was performed using multivariate logistic regressions to investigate the factors that influence mothers’ willingness to share their personal health data, their utilization of a patient portal, and their interests in keeping their health information anonymous. The results of the study showed that the majority of mothers surveyed wanted to keep their data anonymous (440/622, 70.7%) and use patient portals (394/622, 63.3%) and were willing to share their data from Web-based surveys (509/622, 81.8%) and from mobile phones (423/622, 68.0%). However, 36.0% (224/622) and 40.5% (252/622) of mothers were less willing to share their medical record data and their locations with researchers, respectively. We found that the utilization of patient portals, their attitude toward keeping data anonymous, and their willingness to share different data sources were dependent on the mothers’ health care provider status, their motivation, and their privacy concerns. Mothers’ concerns about the misuse of personal health information had a negative impact on their willingness to share sensitive data (ie, electronic medical record: adjusted odds ratio [aOR] 0.43, 95% CI 0.25-0.73; GPS: aOR 0.4, 95% CI 0.27-0.60). In contrast, mothers’ motivation to share their data had a positive impact on disclosing their data via Web-based surveys (aOR 5.94, 95% CI 3.15-11.2), apps and devices designed for health (aOR 5.3, 95% CI 2.32-12.1), and a patient portal (aOR 4.3, 95% CI 2.06-8.99). The findings of this study suggest that mothers’ privacy concerns affect their decisions to share sensitive data. However, mothers’ access to the internet and the utilization of patient portals did not have a significant effect on their willingness to disclose their medical record data. Finally, researchers can use our findings to better address their study subjects concerns and gain their subjects trust to disclose data.
- Published
- 2020
5. Efficacy of Short Message Service Text Messaging Interventions for Postoperative Pain Management: Systematic Review (Preprint)
- Author
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Christoph Buck, Christian Keweloh, Adam Bouras, and Eduardo J Simoes
- Abstract
BACKGROUND Addiction to opiates and synthetic opioids poses a major threat to public health worldwide, with pharmaceutical opioids prescribed to manage pain constituting the main problem. To counteract this threat, suitable pain management strategies should be implemented in health care. Monitoring pain management seems to be feasible using telemedicine with a certain degree of resource intensity and digitization. As a communication channel for this type of monitoring, SMS appears to be a valid alternative. OBJECTIVE The aim of this systematic literature review was to (1) provide information on the state of research regarding postoperative pain management via SMS, (2) establish a basic understanding of SMS-based pain management, and (3) provide insight into the feasibility of these management strategies. The research question was as follows: Is postoperative pain management feasible and effective utilizing SMS? METHODS A systematic literature review was performed mainly following the PRISMA guidelines and another guide on performing a systematic literature review for information systems–related research. A search string was developed based on the objectives and research question, and eight databases were searched. RESULTS The initial search resulted in 2083 records, which could be narrowed down by applying various exclusion criteria. Thereby, 11 articles were identified as relevant, which were accordingly analyzed and evaluated by full-text screening. In all articles, pain management interventions were performed using SMS communication between health care professionals and patients or their legal guardians. A prospective approach was predominantly chosen as the study design (91%) with the leading research objective of determining the intervention’s feasibility (73%). The primary reason for sending SMS messages was to monitor patients (64%). Overall, the use of SMS improved adherence, acceptance, and satisfaction regarding postoperative pain management. With an average response rate of approximately 89.5% (SD 3.8%), the reliability of SMS as a communication and monitoring tool was further emphasized. This response rate is significantly higher than that for email interventions (66.63%, P CONCLUSIONS This study provides a comprehensive picture of the current status on postoperative pain management by SMS. Communication via SMS was beneficial in all interventions, even preoperative. Six SMS interventions could be certified by the respective institutional review board and three were Health Insurance Portability and Accountability Act–compliant. Therefore, the results of this study could be leveraged to address the opioid epidemic. Overall, the research question could be confirmed. Future research should extend this systematic literature review regarding preoperative pain management. Based on these findings, a pre- and postoperative communication model should be developed to address the opioid epidemic effectively.
- Published
- 2020
6. RNA-Seq reveals differential expression profiles and functional annotation of genes involved in retinal degeneration in Pde6c mutant Danio rerio
- Author
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Adam Bouras, Hu Huang, Anton Lennikov, and Madhu Sudhana Saddala
- Subjects
Retinal degeneration ,FastQC ,Light Signal Transduction ,genetic structures ,Trinity ,lcsh:QH426-470 ,lcsh:Biotechnology ,Neural degeneration ,Retina ,03 medical and health sciences ,Pde6c ,0302 clinical medicine ,lcsh:TP248.13-248.65 ,Gene expression ,Genetics ,medicine ,Animals ,Gene Regulatory Networks ,RNA-Seq ,KEGG ,Zebrafish ,Gene ,030304 developmental biology ,0303 health sciences ,Cyclic Nucleotide Phosphodiesterases, Type 6 ,Retinal pigment epithelium ,biology ,Retinal Degeneration ,Zebrafish Proteins ,biology.organism_classification ,medicine.disease ,Cell biology ,lcsh:Genetics ,medicine.anatomical_structure ,Mutation ,Gene ontology ,030217 neurology & neurosurgery ,Biotechnology ,Visual phototransduction ,Research Article - Abstract
Background Retinal degenerative diseases affect millions of people and represent the leading cause of vision loss around the world. Retinal degeneration has been attributed to a wide variety of causes, such as disruption of genes involved in phototransduction, biosynthesis, folding of the rhodopsin molecule, and the structural support of the retina. The molecular pathogenesis of the biological events in retinal degeneration is unclear; however, the molecular basis of the retinal pathological defect can be potentially determined by gene-expression profiling of the whole retina. In the present study, we analyzed the differential gene expression profile of the retina from a wild-type zebrafish and phosphodiesterase 6c (pde6c) mutant. Results The datasets were downloaded from the Sequence Read Archive (SRA), and adaptors and unbiased bases were removed, and sequences were checked to ensure the quality. The reads were further aligned to the reference genome of zebrafish, and the gene expression was calculated. The differentially expressed genes (DEGs) were filtered based on the log fold change (logFC) (±4) and p-values (p Conclusions Our data strongly indicate that, among these genes, the above-mentioned pathways’ genes as well as calcium-binding, neural damage, peptidase, immunological, and apoptosis proteins are mostly involved in the retinal and neural degeneration that cause abnormalities in photoreceptors or retinal pigment epithelium (RPE) cells.
- Published
- 2019
7. Five Fruit and Vegetable a Day Does Not Reflect the Upward Trend of Obesity in the U.S
- Author
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Adam Bouras, Eduardo J. Simoes, Yilin Yoshida, Chester L. Schmaltz, Jeannette Jackson-Thompson, and Esmaeel Rahmani
- Subjects
medicine.medical_specialty ,Calorie ,5 fruit and vegetable a day ,Behavioral Risk Factor Surveillance System ,business.industry ,Public health ,Ethnic group ,Odds ratio ,medicine.disease ,Logistic regression ,Obesity ,Article ,Health promotion ,Medicine ,Trends ,BRFSS ,business ,Demography - Abstract
Objective: After almost three decades of U.S. surveillance in fruit and vegetable (F&V) intake and obesity, it is important to evaluate their usefulness for monitoring prevention and health promotion efforts in public health. We used U.S. surveillance data to evaluate whether the 16-year trends of F&V intake, measured by the prevalence of eating five or more servings of fruits and vegetables a day (FV5/day) is related to obesity trend as measured by its prevalence in the same period. We also evaluated whether trends in the prevalence of FV5/day by important sociodemographic factors (age, race/ethnicity, etc.) could explain the findings. Study design: A secondary analysis of U.S. adults (≥ 18 years) from the Behavioral Risk Factor Surveillance System (BRFSS) (1994–2009). Methods: We categorized survey subjects for their F&V intake derived from the BRFSS six-question food frequency questionnaire into two groups: < FV5/day vs. ≥ FV5/day. Obesity was defined as BMI ≥ 30. We used logistic regressions to compute predicted prevalence of FV5/day and obesity, and to estimate the odds ratio of FV5/day by obesity and levels of sociodemographic, stratified by year. Results: Between 1994 and 2009, the prevalence of FV5/day hovered around 25% among U.S. adults, while the obesity prevalence steadily increased from 14.8% to 27.4%. As measured through odds ratio, an inverse association between FV5/day and obesity was only observed in 55+, but not in other age, racial/ethnic or education groups. Conclusions: Between 1994 and 2009, we could not confirm a decrease in the prevalence of FV5/day associated with an increase in obesity prevalence, except for age 55+ group. Known disparities in FV5/day and obesity across sociodemographic factors persisted over the study period. FV5/day may be an inappropriate measure of total calories derived from eating fruits and vegetables. Its use to measure impact of public health strategies to improve nutrition and prevent obesity may be questionable.
- Published
- 2019
8. Conceptual specifications of a cooperative inter-machines dialogue
- Author
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Adam Bouras, Nizar Jebli, and Fathia Azzouzi
- Subjects
Cognitive science ,Action (philosophy) ,Human intelligence ,Logical conjunction ,Computer science ,Interpretation (philosophy) ,Dialogical self ,Inference ,Cognition ,Science, technology and society ,Coherence (linguistics) ,Task (project management) - Abstract
Beside the universe which enhances the interaction of its different components and the alive world which boots its inner interactions with a certain intelligence related to reproduction and communication, it is obvious that the art of invention, manipulation and interpretation are the main features of human intelligence. How is the cooperative dialogue playing a key role in all of that? And precisely between, in one hand, a dominated sense environment conceived with a huge sophisticated concepts, in other hand, a billions of bits reaching, within any executive task, two possible states, in order to rich at the end an amazing interpretable responses. In this paper we are going to stress on those dialogue mechanisms which are based essentially on a philosophical, logical and scientific concept of induction which is tied to deduction or also inference but which in all case lead to action. We will therefore present a general model of dialogue between any type of participants (humans, machines or other) that guarantees both the structural coherence of the conversations and the cognitive coherence of the dialogical acts.
- Published
- 2019
9. Non-Hispanic White Mothers’ Willingness to Share Personal Health Data With Researchers: Survey Results From an Opt-in Panel (Preprint)
- Author
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Adam Bouras, Eduardo Simoes, Suzanne Boren, Lanis Hicks, Iris Zachary, Satvinder Dhingra, and Richard Ellis
- Abstract
BACKGROUND Advances in information communication technology provide researchers with the opportunity to access and collect continuous and granular data from enrolled participants. However, recruiting study participants who are willing to disclose their health data has been challenging for researchers. These challenges can be related to socioeconomic status, the source of data, and privacy concerns about sharing health information, which affect data-sharing behaviors. OBJECTIVE This study aimed to assess healthy non-Hispanic white mothers’ attitudes in five areas: motivation to share data, concern with data use, desire to keep health information anonymous, use of patient portal and willingness to share anonymous data with researchers. METHODS This cross-sectional study was conducted on 622 healthy non-Hispanic white mothers raising healthy children. From a Web-based survey with 51 questions, we selected 15 questions for further analysis. These questions focused on attitudes and beliefs toward data sharing, internet use, interest in future research, and sociodemographic and health questions about mothers and their children. Data analysis was performed using multivariate logistic regressions to investigate the factors that influence mothers’ willingness to share their personal health data, their utilization of a patient portal, and their interests in keeping their health information anonymous. RESULTS The results of the study showed that the majority of mothers surveyed wanted to keep their data anonymous (440/622, 70.7%) and use patient portals (394/622, 63.3%) and were willing to share their data from Web-based surveys (509/622, 81.8%) and from mobile phones (423/622, 68.0%). However, 36.0% (224/622) and 40.5% (252/622) of mothers were less willing to share their medical record data and their locations with researchers, respectively. We found that the utilization of patient portals, their attitude toward keeping data anonymous, and their willingness to share different data sources were dependent on the mothers’ health care provider status, their motivation, and their privacy concerns. Mothers’ concerns about the misuse of personal health information had a negative impact on their willingness to share sensitive data (ie, electronic medical record: adjusted odds ratio [aOR] 0.43, 95% CI 0.25-0.73; GPS: aOR 0.4, 95% CI 0.27-0.60). In contrast, mothers’ motivation to share their data had a positive impact on disclosing their data via Web-based surveys (aOR 5.94, 95% CI 3.15-11.2), apps and devices designed for health (aOR 5.3, 95% CI 2.32-12.1), and a patient portal (aOR 4.3, 95% CI 2.06-8.99). CONCLUSIONS The findings of this study suggest that mothers’ privacy concerns affect their decisions to share sensitive data. However, mothers’ access to the internet and the utilization of patient portals did not have a significant effect on their willingness to disclose their medical record data. Finally, researchers can use our findings to better address their study subjects concerns and gain their subjects trust to disclose data.
- Published
- 2019
10. Correction: Non-Hispanic White Mothers’ Willingness to Share Personal Health Data With Researchers: Survey Results From an Opt-in Panel
- Author
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Adam Bouras, Eduardo J Simoes, Suzanne Boren, Lanis Hicks, Iris Zachary, Christoph Buck, Satvinder Dhingra, and Richard Ellis
- Subjects
Biomedical Engineering ,Medicine (miscellaneous) ,Health Informatics - Published
- 2020
11. Non-Hispanic White Mothers’ Willingness to Share Personal Health Data With Researchers: Survey Results From an Opt-in Panel
- Author
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Christoph Buck, Adam Bouras, Eduardo J. Simoes, Iris Zachary, Lanis L. Hicks, Richard Ellis, Satvinder S. Dhingra, and Suzanne Austin Boren
- Subjects
medicine.medical_specialty ,020205 medical informatics ,Biomedical Engineering ,Medicine (miscellaneous) ,Health Informatics ,02 engineering and technology ,Affect (psychology) ,03 medical and health sciences ,0302 clinical medicine ,0202 electrical engineering, electronic engineering, information engineering ,medicine ,Confidentiality ,030212 general & internal medicine ,Socioeconomic status ,Original Paper ,business.industry ,Medical record ,Patient portal ,Odds ratio ,fitness trackers ,confidentiality ,Corrigenda and Addenda ,mobile applications ,Data sharing ,electronic health records ,Family medicine ,surveys and questionnaires ,The Internet ,Psychology ,business ,logistic models - Abstract
Background Advances in information communication technology provide researchers with the opportunity to access and collect continuous and granular data from enrolled participants. However, recruiting study participants who are willing to disclose their health data has been challenging for researchers. These challenges can be related to socioeconomic status, the source of data, and privacy concerns about sharing health information, which affect data-sharing behaviors. Objective This study aimed to assess healthy non-Hispanic white mothers’ attitudes in five areas: motivation to share data, concern with data use, desire to keep health information anonymous, use of patient portal and willingness to share anonymous data with researchers. Methods This cross-sectional study was conducted on 622 healthy non-Hispanic white mothers raising healthy children. From a Web-based survey with 51 questions, we selected 15 questions for further analysis. These questions focused on attitudes and beliefs toward data sharing, internet use, interest in future research, and sociodemographic and health questions about mothers and their children. Data analysis was performed using multivariate logistic regressions to investigate the factors that influence mothers’ willingness to share their personal health data, their utilization of a patient portal, and their interests in keeping their health information anonymous. Results The results of the study showed that the majority of mothers surveyed wanted to keep their data anonymous (440/622, 70.7%) and use patient portals (394/622, 63.3%) and were willing to share their data from Web-based surveys (509/622, 81.8%) and from mobile phones (423/622, 68.0%). However, 36.0% (224/622) and 40.5% (252/622) of mothers were less willing to share their medical record data and their locations with researchers, respectively. We found that the utilization of patient portals, their attitude toward keeping data anonymous, and their willingness to share different data sources were dependent on the mothers’ health care provider status, their motivation, and their privacy concerns. Mothers’ concerns about the misuse of personal health information had a negative impact on their willingness to share sensitive data (ie, electronic medical record: adjusted odds ratio [aOR] 0.43, 95% CI 0.25-0.73; GPS: aOR 0.4, 95% CI 0.27-0.60). In contrast, mothers’ motivation to share their data had a positive impact on disclosing their data via Web-based surveys (aOR 5.94, 95% CI 3.15-11.2), apps and devices designed for health (aOR 5.3, 95% CI 2.32-12.1), and a patient portal (aOR 4.3, 95% CI 2.06-8.99). Conclusions The findings of this study suggest that mothers’ privacy concerns affect their decisions to share sensitive data. However, mothers’ access to the internet and the utilization of patient portals did not have a significant effect on their willingness to disclose their medical record data. Finally, researchers can use our findings to better address their study subjects concerns and gain their subjects trust to disclose data.
- Published
- 2020
12. Empowering diabetes self-management by gamifying intelligent system: MyTrybeCare concept
- Author
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Adam Bouras, Kat Usop, and Mihail Popescu
- Subjects
Knowledge management ,020205 medical informatics ,business.industry ,InformationSystems_INFORMATIONSYSTEMSAPPLICATIONS ,Intelligent decision support system ,Diabetes self management ,02 engineering and technology ,Type 2 diabetes ,medicine.disease ,03 medical and health sciences ,Social support ,0302 clinical medicine ,Informatics ,0202 electrical engineering, electronic engineering, information engineering ,medicine ,030212 general & internal medicine ,Psychology ,business - Abstract
The objective of this paper is to provide a new solution for self-managing diabetes mainly Type 2 diabetes and prevent pre-diabetes by using gamification and social networking platform. Our solution is based on improving social support and help patients with diabetes and those that are at high risk of diabetes learn more about their condition in an interactive way. myTrybeCare is a holistic user — centered app that aims to connect between social networking and gamification capabilities so to encourage and empower its users to interact with each other. Among designated features are setting challenges and activities that can help members' self-manage their goals.
- Published
- 2018
13. Productive Efficiency And Optimal Firm Size: The Case Of US Health Services Industry
- Author
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Adam Bouras, Abhirjun Dutta, Roberto M. Ike, David Bouras, Aloyce R. Kaliba, Emmanuel I.S. Ajuzie, and Felix M. Edoho
- Subjects
Microeconomics ,Productive efficiency ,Market capitalization ,Firm offer ,Restructuring ,Mergers and acquisitions ,Core competency ,Economics ,General Medicine ,Socially optimal firm size ,Divestment - Abstract
This paper examines the link between firm size and productive efficiency. In so doing, it attempts to determine optimal firm sizes in terms of market capitalization and total asset thereby allowing firms to achieve higher level of productive efficiency. The results indicate that the optimal firm size in terms of market capitalization is $13.1 billion. In terms of total asset, the optimal firm size is $10.3 billion. The results also suggest that there is a threshold above which an increase in firm size adversely affects the level of productive efficiency. The results have important implications for managerial policies regarding firm restructuring. To achieve higher productive efficiency, smaller firms have to pursue expansion strategies through mergers and acquisitions. Larger firms, on the other hand, have to pursue divestment strategies to reduce the size of their assets, particularly by refocusing on core competencies.
- Published
- 2011
14. Numerical magneto hydro dynamic flow simulation of velocity and pressure for electrically conducting, incompressible fluids
- Author
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Raoudha Chaabane, Sassi Ben Nasrallah, and Adam Bouras
- Subjects
Physics ,velocity-pressure formulation ,Differential equation ,projection method ,Mechanical Engineering ,Applied Mathematics ,General Engineering ,Aerospace Engineering ,Micropump ,Mechanics ,Industrial and Manufacturing Engineering ,Lorentz force ,Flow velocity ,Incompressible flow ,Automotive Engineering ,Projection method ,Compressibility ,Magnetohydrodynamic drive ,Magnetohydrodynamics ,finite difference scheme ,magneto-hydrodynamics equations - Abstract
In this paper, we report on numerical simulations of incompressible MagnetoHydroDdynamic flows by a two dimensional finite difference scheme associated to an appropriate projection method performed to characterize velocity-pressure formulations along the specified MHD duct by solving the set of differential equations of magnetohydrodynamics. In the present calculation, a working electrolytic solution is considered in order to bring up the application of the magnetohydrodynamic micropump. Numerical results show the characteristics of flow velocity, pressure distribution and their convergence tests. The computations aim to optimize the flow rate of a given MHD micropump regarding to its geometrical dimensions and the external electromagnetic excitation.
- Published
- 2007
15. Supervisory-language Grammar to Appeal for Intelligent Instrument Coalition and Automatically Task Allocation
- Author
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Adam Bouras
- Subjects
General Computer Science ,Grammar ,business.industry ,Computer science ,media_common.quotation_subject ,Interoperability ,Semantic interoperability ,Swarm intelligence ,Negotiation ,Conceptual framework ,Hybrid system ,Graph (abstract data type) ,Artificial intelligence ,business ,Software engineering ,media_common - Abstract
This paper considers that field devices, such as sensors and actuators, are the most appropriate tools to create Swarm Intelligence Systems. In this paper we present a formal modeling of a distributed intelligence based on the interconnection of filed devices. We propose an open conceptual framework to study interoperability on equipments of various origins. An external approach is adopted. It uses graph and language theories to assign interoperability and to specify the global operating rules. The supervisory-language grammar, for a distributed manipulation is mathematically calculated. It defines a mathematical basis for a semantic information exchange. In this work, we extract the operating sequences that can be delegated to a distributed negotiation process. An illustrative example is proposed.
- Published
- 2014
16. A priority health index identifies the top six priority risk and related factors for non-communicable diseases in Brazilian cities
- Author
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Ali H. Mokdad, Eduardo J. Simoes, Deborah Carvalho Malta, Lenildo de Moura, Adam Bouras, Otaliba Libanio de Morais Neto, Denise Lopes Porto, and Juan Jose Cortez-Escalante
- Subjects
Adult ,Male ,Gerontology ,medicine.medical_specialty ,Urban Population ,Health Behavior ,Hypercholesterolemia ,Psychological intervention ,Binge drinking ,Public health surveillance ,Risk Factors ,Environmental health ,Epidemiology ,Diabetes Mellitus ,Prevalence ,Health Status Indicators ,Humans ,Medicine ,Obesity ,Sex Distribution ,Risk factor ,Disease burden ,Aged ,business.industry ,Public health ,Smoking ,Public Health, Environmental and Occupational Health ,Middle Aged ,Overweight ,Chronic Disease ,Hypertension ,Female ,Biostatistics ,business ,Brazil ,Research Article - Abstract
Background In Brazil, 72% of all deaths in 2007 were attributable to non-communicable diseases (NCD). We used a risk and related factor based index to prioritize NCD prevention programs in the combined 26 capital cities and the federal district (i.e., Brasilia) of Brazil. Methods We used 2006–2011 data (adults) from census and Brazil's surveillance of 12 NCD risk factors and 74 disease group mortality. The risk and related factors were: smoking, physical inactivity, overweight-obesity, low fruits and vegetables intake, binge drinking, insufficient Pap smear screening (women aged 25 to 59 years), insufficient mammography screening (women aged 50 to 69 years), insufficient blood pressure screening, insufficient blood glucose screening, diagnosis of hypercholesterolemia, diagnosis of hypertension and diagnosis of diabetes. We generated six indicators: intervention reduction of the risk factor prevalence, intervention cost per person, prevalence of risk factor, deaths attributable to risk factor, risk factor prevalence trend and ratio of risk factor prevalence between people with and without a high school education. We transformed risk and related factor indicators into priority scores to compute a priority health index (PHI). We implemented sensitivity analysis of PHI by computing it with slightly altered formulas and altering values of indicators under the assumption of bias in their estimation. We ranked risk factors based on PHI values. Results We found one intermediate (i.e., overweight-obesity) and six top risk and related factors priorities for NCD prevention in Brazil's large urban areas: diagnosed hypertension, physical inactivity, blood pressure screening, diagnosed hypercholesterolemia, smoking and binge drinking. Conclusion Brazil has already prioritized the six top priorities (i.e., hypertension, physical inactivity, blood pressure screening, hypercholesterolemia, smoking and binge drinking) and one intermediate priority (i.e., overweight-obesity) for NCD prevention identified in this report. Because effective interventions to reduce disease burden associated with each of the six priority risk factors are available, strategies based on these interventions need to be sustained in order to reduce NCD burden in Brazil. PHI can be used to track NCD prevention and health promotion actions at the local and national level in Brazil and in countries with similar public health surveillance systems. Electronic supplementary material The online version of this article (doi:10.1186/s12889-015-1787-1) contains supplementary material, which is available to authorized users.
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