583 research outputs found
Institutional duality and human resource management practice in foreign subsidiaries of multinationals
We examine how institutional context affects the decisions that subsidiaries of multinational corporations (MNCs) make in pursuing particular human resource management (HRM) practices in response to institutional duality. Drawing on Varieties of Capitalism, along with the concept of intermediate conformity, we argue that the use of particular HRM practices by MNC subsidiaries will differ depending on both the combination of home and host institutional contexts, and on the nature of the particular practice under consideration. Using data from a survey of HRM practices in 1196 firms across ten countries, we compare HRM practices in subsidiaries located and headquartered in different combinations of liberal and/or coordinated market economies. Our study suggests MNC subsidiaries conform only to the most persuasive norms, while exercising their agency to take advantage of the opportunities presented by institutional duality to adopt practices that distinguish them from indigenous competitors
CHANGES OF IMMUNOLOGICAL RESISTANCE AS A POSSIBLE CRITERION FOR THE RISK OF THE POPULATION RESIDING INDUSTRIAL ZONE
No abstrac
Electrochemical Treatment of Arsenic in Drinking Water: Effect of Initial As3+ Concentration, pH, and Conductivity on the Kinetics of Oxidation
Many technologies for the treatment of arsenic-containing drinking water are available, but most of them are more effective on arsenic oxidized forms. Therefore, the pre-oxidation of As3+ is necessary. The electrochemical processes represent a very promising method due to the simultaneous oxidation of compounds using electrochemical conditions and the reactive radicals produced. In this work, As3+ oxidation was experimentally studied at a pilot scale using an electrochemical oxidation cell (voltage: 10 V; current: 1.7 A). The effect of the initial arsenite concentration, pH, and conductivity of drinking water on the oxidation of As3+ into As5+ was investigated. The results showed that the initial As3+ concentration strongly directly influences the oxidation process. Increasing the initial arsenite concentration from 500 to 5000 ”g Lâ1, the pseudo-first order kinetic constant (k) strongly decreased from 0.521 to 0.038 minâ1, and after 10 min, only 21.3% of As3+ was oxidized (vs. 99.9% in the case of As3+ equal to 500 ”g Lâ1). Slightly alkaline conditions (pH = 8) favored the electrochemical oxidation into As5+, while the process was partially inhibited in the presence of a more alkaline or acidic pH. The increase in conductivity up to 2000 ”S cmâ1 enhanced the kinetic of the oxidation, despite remaining on the same order of magnitude as in the case of conductivity equal to 700 ”S cmâ1. After 10 min, 99.9 and 95% of As3+ was oxidized, respectively. It is the opinion of the authors that the influence of other operational factors, such as voltage and current density, and the impact of the high concentration of other pollutants should be deeply studied in order to optimize the process, especially in the case of an application at full scale. However, these results provide helpful indications to future research having highlighted the influence of initial As3+ concentration, pH, and conductivity on the electrochemical oxidation of arsenic
Predicting the outcome of heart failure against chronic-ischemic heart disease in elderly population â Machine learning approach based on logistic regression, case to Villa Scassi hospital Genoa, Italy
Totally 167 patients were admitted at cardiology ward in Villa Scassi hospital, Genoa, Italy. We worked with two control groups: heart failure 59 patients (mean age: 71.37 ± 13.27 years) and chronic-ischemic heart disease 108 patients (mean age: 68.85 ± 11.3 years). Nine parameters: Hb, Serum Creatinine, LDL, HDL, Triglycerides, ALT, AST, hs-cTnI, CRP were evaluated onset to hospitalization. We aimed to identify significant independent predictors relative to the outcome of heart failure versus chronic-ischemic heart disease and select combination of biochemical parameters in logistic regression-based model that would provide on average excellent discrimination to the outcome of heart failure versus chronic-ischemic heart
disease in elderly population. Applying 20-fold repeated stratified cross-validation, 4:1 train/test ratio split, we have found that probability of heart failure, provides best discrimination of the outcome of heart failure against chronic-ischemic heart disease
Basilar artery fenestration
The posterior circulation of the brain constitutes the vertebrobasilar system and
its branches, which are responsible for about 30% of the brain’s blood supply.
The aim of this study was to describe the anomalies of the basilar artery, especially
fenestrations. For that purpose, we examined 50 patients with computed
tomography (CT) angiography during an 8-month period. In the CT reports of
2 (4%) patients of the 50 analysed, fenestration was found at the proximal basilar
trunk. The two fenestrations in our series were not associated with aneurysms.
No collateral branches originated from the two limbs of the fenestration. In conclusion,
basilar artery fenestrations are a rare finding. The data derived from this
study are useful teaching material for anatomists, and for the radiologists and
neurosurgeons they are important for diagnostic and intervention procedures
such as CT, magnetic resonance imaging, angiography, and surgical and endovascular
procedures. (Folia Morphol 2011; 70, 2: 80–83
Extreme Fluctuations in Wnt/beta-Catenin Signaling as an Approach for Colon Cancer Prevention and Therapy
Abstract: Mutations in the Wnt/beta-catenin (Wnt) signaling pathway initiate most cases of sporadic colon cancers (CC); therefore one approach for CC prevention and therapy is to suppress Wnt activity. However, the prolonged suppression of the signaling pathway is detrimental to the intestinal stem cells that rely on Wnt signaling for survival. Furthermore, CC cells exposed for an extended period of time to a single Wnt signaling -modulating agent may develop resistance to it. A possible solution is suggested by our findings that: (a) butyrate, a colonic metabolite of dietary fiber, and synthetic histone deacetylase inhibitors that mimic the effects of butyrate, hyperactivate Wnt transcriptional activity in CC cells with mutations in the pathway, and (b) high fold changes of Wnt signaling induce high apoptotic levels in the mutated cells. Therefore, diet-and drug-based regimens that result in alternating periods of suppressed and hyper-activated Wnt signalling may become powerful anti-CC preventive and therapeutic approaches. The hypothesis can be tested by (1) evaluating the effects of drug-and dietbased regimens, which induce maximal fluctuations in Wnt signaling, on the adenoma burden of Apc/min mice, an established in vivo model of intestinal cancer, (2) epidemiological studies analyzing the dietary habits, such as daily fasting hours and fiber intake, of healthy individuals and patients with positive colonoscopies, and 352 D. L. Lazarova and M. Bordonaro (3) examining the ability of different diets to produce colonic lumen content with apoptotic and Wnt-modulatory functions
An Interoperable Electronic Health Record System for Clinical Cardiology
Currently in hospitals, there are several separate information systems that manage, very often autonomously, the patientâs personal, clinical and diagnostic data. An electronic health record system has been specifically developed for a cardiology ward and it has been designed âab initioâ to be fully integrated into the hospital information system and to exchange data with the regional health information infrastructure. All documents have been given as Health Level 7 (HL7) clinical document architecture and messages are sent as HL7-Version 2 (V2) and/or HL7 Fast Healthcare Interoperability Resources (FHIR). Specific decision support sections for specific aspects have also been included. The system has been used for more than three years with a good level of satisfaction by the users. In the future, the system can be the basis for secondary use for clinical studies, further decision support systems and clinical trials
Scientific mindfulness: a foundation for future themes in international business
We conceptualize new ways to qualify what themes should dominate the future IB
research agenda by examining three questions: Whom should we ask? What should we ask and which selection criteria should we apply? What are the contextual forces? We propose scientific mindfulness as the way forward for generating themes in IB research
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