83 research outputs found
The architecture of coopetition: strategic intent, ambidextrous managers, and knowledge sharing
The study investigates the significance of strategic intent, manager's ambidexterity, and knowledge sharing routines for firms in their quest to pursue coopetition. We utilize the resource-based view and the dynamic capabilities theory to ground our hypotheses. We test the hypotheses using the data collected from 313 firms that engage in coopetition relationships through an online survey. The findings forward knowledge sharing and ambidextrous managers as intervening variables, in that when complemented with knowledge sharing, a firm's strategic intent could better guide the firm's managers to pursue coopetition successfully. Findings further advocate that knowledge sharing complements to enable the relationship between a firm's strategic intent and its ambidextrous managers, as well as the relationship between strategic intent and coopetition. Furthermore, results also indicate that ambidextrous managers, with a skillset of a combination of exploration and exploitation, are positively associated to coopetition. Overall, the findings make important theoretical as well as empirical contributions to the coopetition and strategic alliance literature
Low birth weight infants outcome in a government general hospital of South India
Introduction: Globally, four million newborns die in the neonatal period. In India, 1.2 million neonatal deaths are reported every year. Low birth weight (LBW) is still a significant cause of neonatal deaths in India. Aim: The aim of the study was to determine the morbidity and mortality pattern of LBW neonates admitted in neonatal intensive care unit (NICU). Materials and Methods: A hospital based retrospective study was conducted at NICU of a government hospital of South India. Neonates admitted from April 2014 to March 2019 were included in the study and events from admission to discharge were recorded. Information was extracted retrospectively during admission from patient records and death certificates, using a pretested questionnaire. All neonates with incomplete and insufficient data were excluded from this study. The data collected were analyzed by frequency and percentages of various parameters of morbidity and mortality were calculated. Results: The data analysis showed that 7238 neonates were admitted to NICU during the study period. The majority of the neonates were males and the majority (4214, 58.22%) were born at full term of gestation, whereas preterm neonates born between 34 and 37 weeks were 1704 (23.54%) and <34 weeks were 1320 (18.23%). Of 3157 LBW neonates admitted, 2012 (63.73%) were discharged, whereas 651 (20.81%) expired, 277 (8.77%) left against medical advice, and 217 (6.87%) were referred to other departments or higher center. Conclusion: LBW is one of the most common causes of admission in NICU in the government hospital in South India. The study showed that as weight of the neonate decreased, the duration of hospital stay increased, and respiratory distress syndrome and death rates were reported to increase as the weight decreased
NEUROCYSTICERCOSIS IN CHILDREN PRESENTING WITH AFEBRILE SEIZURE: CLINICAL PROFILE, IMAGING AND SERODIAGNOSIS
Neurocysticercosis (NCC) is one of the major causes of childhood seizures in developing countries including India and Latin America. In this study neurological pediatric cases presenting with afebrile seizures were screened for anti-Cysticercus antibodies (IgG) in their sera in order to estimate the possible burden of cysticercal etiology. The study included a total of 61 pediatric afebrile seizure subjects (aged one to 15 years old); there was a male predominance. All the sera were tested using a pre-evaluated commercially procured IgG-ELISA kit (UB-Magiwell Cysticercosis Kit ™). Anti-Cysticercus antibody in serum was positive in 23 of 61 (37.7%) cases. The majority of cases with a positive ELISA test presented with generalized seizure (52.17%), followed by complex partial seizure (26.08%), and simple partial seizure (21.73%). Headaches were the major complaint (73.91%). Other presentations were vomiting (47.82%), pallor (34.78%), altered sensorium (26.08%), and muscle weakness (13.04%). There was one hemiparesis case diagnosed to be NCC. In this study one child without any significant findings on imaging was also found to be positive by serology. There was a statistically significant association found between the cases with multiple lesions on the brain and the ELISA-positivity (p = 0.017). Overall positivity of the ELISA showed a potential cysticercal etiology. Hence, neurocysticercosis should be suspected in every child presenting with afebrile seizure especially with a radio-imaging supportive diagnosis in tropical developing countries or areas endemic for taeniasis/cysticercosis.Neurocisticercose Ă© uma das causas mais comuns de crises em crianças em paĂses em desenvolvimento incluindo ĂŤndia e AmĂ©rica Latina. Neste estudo casos neurolĂłgicos pediátricos, apresentando crises afebris foram selecionados atravĂ©s de anticorpos anti-Cysticercus (IgG) no seu soro para avaliar possĂvel etiologia de Cysticercus. O estudo incluiu total de 61 casos pediátricos de indivĂduos com crises afebris (idade de um a 15 anos); houve predominância de pacientes do sexo masculino. Todos os soros foram testados usando um kit comercial IgG-ELISA (UB-Magiwell Cysticercosis kit™) avaliado previamente. O anticorpo anti-Cysticercus no soro foi positivo em 23 de 61 casos (37,7%). A maioria dos casos com teste de ELISA positivo apresentava crises generalizadas (52,17%), seguida por casos de crises parciais complexas (26,08%) e crises parciais simples (21,73%). Dores de cabeça foram a queixa principal (73,91%). Outras manifestações foram vĂ´mitos (47,82%), palidez (34,78%), sensĂłrio alterado (26,08%) e fraqueza muscular (13,04%). Houve um caso de hemiparesia diagnosticado como NCC. Neste estudo uma criança sem quaisquer achados significantes Ă s imagens apresentou sorologia positiva. Houve associação estatĂstica significante entre os casos com mĂşltiplas lesões no cĂ©rebro e a positividade pelo ELISA (p = 0,017). No seu conjunto a positividade pelo ELISA demonstra etiologia potencial para a cisticercose. Portanto neurocisticercose deve ser suspeitada em qualquer criança apresentado crises afebris com imagem que sugira diagnĂłstico em paĂses tropicais em desenvolvimento ou em áreas endĂŞmicas para tenĂase/cisticercose
Design of feedback control strategies in a plant-wide wastewater treatment plant for simultaneous evaluation of economics, energy usage, and removal of nutrients
Simultaneous removal of nitrogen and phosphorous is a recommended practice while treating wastewater. In the present study, control strategies based on proportional-integral (PI), model predictive control (MPC), and fuzzy logic are developed and implemented on a plant-wide wastewater treatment plant. Four combinations of control frameworks are developed in order to reduce the operational cost and improve the effluent quality. As a working platform, a Benchmark simulation model (BSM2-P) is used. A default control framework with PI controllers is used to control nitrate and dissolved oxygen (DO) by manipulating the internal recycle and oxygen mass trans-fer coefficient (KLa). Hierarchical control topology is proposed in which a lower-level control framework with PI controllers is implemented to DO in the sixth reactor by regulating the KLa of the fifth, sixth, and seventh reactors, and fuzzy and MPC are used at the supervisory level. This supervisory level considers the ammonia in the last aerobic reactor as a feedback signal to alter the DO set-points. PI-fuzzy showed improved effluent quality by 21.1%, total phosphorus removal rate by 33.3% with an increase of operational cost, and a slight increase in the production rates of greenhouse gases. In all the control design frameworks, a trade-off is observed between operational cost and effluent quality
Cost and performance of some carbon capture technology options for producing different quality COâ‚‚ product streams
A techno-economic assessment of power plants with CO2 capture technologies with a focus on process scenarios that deliver different grades of CO2 product purity is presented. The three leading CO2 capture technologies are considered, namely; oxyfuel combustion, pre-combustion and post-combustion capture. The study uses a combination of process simulation of flue gas cleaning processes, modelling with a power plant cost and performance calculator and literature values of key performance criteria in order to evaluate the performance, cost and CO2 product purity of the considered CO2 capture options. For oxyfuel combustion capture plants, three raw CO2 flue gas processing strategies of compression and dehydration only, double flash system purification and distillation purification are considered. Analysis of pre-combustion capture options is based on integrated gasification combined cycle plants using physical solvent systems for capturing CO2 and sulfur species via three routes; co-capture of sulfur impurities with the CO2 stream using Selexol™ solvent, separate capture of CO2 and sulfur impurities using Selexol™, and Rectisol® solvent systems for separate capture of sulfur impurities and CO2. Analysis of post-combustion capture plants was made with and without some conventional pollution control devices. The results highlight the wide variation in CO2 product purity for different oxyfuel combustion capture scenarios and the wide cost variation for the pre-combustion capture scenarios. The post-combustion capture plant with conventional pollution control devices offers high CO2 purity (99.99 mol%) for average cost of considered technologies. The calculations performed will be of use in further analyses of whole chain CCS for the safe and economic capture, transport and storage of CO2
NEUROCYSTICERCOSIS IN CHILDREN PRESENTING WITH AFEBRILE SEIZURE: CLINICAL PROFILE, IMAGING AND SERODIAGNOSIS
Neurocysticercosis (NCC) is one of the major causes of childhood seizures in developing countries including India and Latin America. In this study neurological pediatric cases presenting with afebrile seizures were screened for anti-Cysticercus antibodies (IgG) in their sera in order to estimate the possible burden of cysticercal etiology. The study included a total of 61 pediatric afebrile seizure subjects (aged one to 15 years old); there was a male predominance. All the sera were tested using a pre-evaluated commercially procured IgG-ELISA kit (UB-Magiwell Cysticercosis Kit ™). Anti-Cysticercus antibody in serum was positive in 23 of 61 (37.7%) cases. The majority of cases with a positive ELISA test presented with generalized seizure (52.17%), followed by complex partial seizure (26.08%), and simple partial seizure (21.73%). Headaches were the major complaint (73.91%). Other presentations were vomiting (47.82%), pallor (34.78%), altered sensorium (26.08%), and muscle weakness (13.04%). There was one hemiparesis case diagnosed to be NCC. In this study one child without any significant findings on imaging was also found to be positive by serology. There was a statistically significant association found between the cases with multiple lesions on the brain and the ELISA-positivity (p = 0.017). Overall positivity of the ELISA showed a potential cysticercal etiology. Hence, neurocysticercosis should be suspected in every child presenting with afebrile seizure especially with a radio-imaging supportive diagnosis in tropical developing countries or areas endemic for taeniasis/cysticercosis
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