Results 1 - 10 of 519
Results 1 - 10 of 519. Search took: 0.021 seconds
|Sort by: date | relevance|
[en] In reviewing the literature and industry reports, a number of organizations have approached KM metrics from a Balanced Scorecard, Intellectual Capital (e.g., Skandia’s Intellectual Capital Navigator), Activity-Based Costing, or other borrowed approaches from the accounting and human resources disciplines. Liebowitz in his edited book, Making Cents Out of Knowledge Management (Scarecrow Press, 2008), shows case studies of organizations trying to measure knowledge management success. A few methodologies have examined ways to measure return on knowledge, such as Housel and Bell’s Knowledge Value-Added (KVA) methodology (Housel and Bell, 2001). Liebowitz analysed over 80 publications on knowledge management metrics, whereby KM metrics can be divided into system measures, output measures, and outcome measures. (author)
[en] This study aimed to investigate influence of multiple sociodemographic characteristics on the patient satisfaction levels in outpatient public and private dental practices of Riyadh, Saudi Arabia. Methods: Questionnaire-based survey data were collected from 500 patients, 250 each from the public and private dental clinics of Riyadh, Saudi Arabia from September to December, 2017. Questions related to demographic factors and service attributes were included. A Likert scale of 5 points was used to measure satisfaction levels. Data was analyzed to calculate the descriptive and inferential statistics (analysis of variance and multiple regression analysis) to find the statistical difference (p < 0.01). Results: Satisfaction level differed significantly by education level (P < 0.001) and the type of clinic(P<0.001). The multiple regression analysis suggest that all variables influenced satisfaction, except age and marital status. The satisfaction score was higher by 27% for private clinics compared to public clinics. Conclusion: This study was exploratory and revealed an effect of individual variables on overall satisfaction score of the services attributes. Future plans for patient care could be developed with the help of this research. (author)
[en] Highlights: • An on-line steady-state detection method is proposed. • The training sample is classified into the steady-state and unsteady-state. • Gaussian mixture model is built for the unsteady-state process. • The parameters of the Gaussian mixture model are optimized by k-means++ and AIC. • The accuracy of the detection model is validated by a real gas turbine. - Abstract: In the unsteady-state process, the relationship among the state variables of the gas turbine cannot reflect the current performance level accurately. In order to monitor the condition deterioration of the gas turbine in the peak-shaving timely, an on-line steady-state detection model for gas turbine is proposed in this paper. First, the change rate of the out-power is presented as the key indicator of the difference between the steady-state and unsteady-state process, and the difference value of out-power at adjacent time is available as the characteristic test statistic. Second, the interval estimation of the statistical mean value is used to classify the historical data into the steady-state samples and the unsteady-state samples. Then, these classified samples are employed to train the detection model based on Gaussian discriminant analysis. Because the change rate of the out-power in the unsteady-state process is not a fixed value, the Gaussian mixture model is built for the unsteady-state process, and the initial value of the parameters and the number of sub-models are optimized by k-means++ and AIC evaluation criteria respectively. Finally, the detection model was verified by using the data of a real gas turbine for 10 days.
[en] Public administrations have in recent years developed programs of public funding for innovation to boost the competitiveness of business. The study of how companies have used these funding sources generates knowledge to improve the design of support for private innovation and to provide advice for innovative companies. This paper investigates these issues in the agri-food sector which is of particular interest as it is comprised mainly of small and medium enterprises with a wide regional presence and interaction with their local environment. A survey on technological innovation was used to estimate panel logit models with random effects, taking as dependent variables three types of funding: regional, state and European Union. The results generally show a positive relationship between innovation efforts and access to public funding, but also significant differences between types of funding and between sectors. Food companies that obtain public funding tend to have a more innovative profile than Agriculture ones. Both types of firm present higher probabilities than others companies when it comes to gaining access to regional funding, though the opposite often occurs in the case of state funding. Firm size is not significant for regional funding and no overlap was detected between regional and state funding. The financial crisis has adversely affected regional and national aid, which experienced a significant decrease in the period from 2008 to 2013.
[en] Highlights: • Dynamic mixed copula model is built to explore risk spillover between WTI and OVX. • The dynamic and asymmetric dependence between WTI and OVX is studied. • WTI and OVX present negative dependence most of the time, but not always negative. • Risk spillover from OVX to WTI is significant under the extreme condition. • OVX is verified as a gauge of investor fear instead of risk preference. - Abstract: This study investigates the risk level in the oil market measured by Value-at-Risk (VaR) and conditional VaR (CoVaR), as well as the dynamic and asymmetric dependence between WTI returns and crude oil volatility index (OVX), by constructing six time-varying mixed copula models. Results show that mixed copula between t copula and the 270-degree rotated Clayton copula is the optimal fitting copula to measure dynamic dependence. The estimated time-varying Kendall coefficients indicate that WTI returns and OVX present negative dependence most of the time. There exists a structural change point of dependence between WTI returns and OVX changes on April 17, 2009, while the dependence characteristics within the subsamples are similar to that in the whole sample, indicating the rationality of our time-varying mixed copula models. Finally, the tests show significant risk spillover from OVX to WTI returns and also asymmetric effects for CoVaRs in response to different upside and downside extreme OVX movements.
[en] The electrochemical behavior of a new type of stable diarylnitroxide radicals with bulky substituent in the ortho-position of one of the phenyl rings is described. The presence of the substituent results in broken conjugation of one of the phenyl rings with the NO moiety (the other ring stays conjugated) giving rise to so called “twisted nitroxides”. New diphenylnitroxides with t-Bu and/or CF3 substituents were synthesized and are the first examples of diarylnitroxides which are extremely stable in solution and form both stable oxidized and reduced forms (oxoammonium cations and aminoxyl anions). These compounds exhibit fast ET kinetics and reversible electrochemical oxidation and reduction. Varying the torsion angle θ shifts Eox and Ered values in the opposite directions thus increasing the electrochemical potential gap, contrary to the traditional effects of substituents that commonly shift both potential values in the same direction. The electronic effect of the substituents in the ortho-position as well as the total electronic effect of both rings on the electrochemical potential values was estimated using the linear fit for the relationship between vs. the sum of Hammett constants (σp + σo·cosθ). The ρ value (the slope in the linear fit) is 0.501 indicating significant sensitivity of the potential values to the electronic effects and wide possibilities for tuning. The results obtained shed light on the efficient principles of molecular design for stable electroactive nitroxide-based materials.
[en] KAERI is trying to build a communication oriented organizational culture as an organizational performance objective. We strategically developed E&T program to promote communication between KAERI staff. Our strategies consist of three different approaches: 1) Direct communication training program of major nuclear issues. 2) staff communication competency improvement. 3) Organizational activation program to provide communication opportunities. It contributes to achieving organizational important values and goals such as communication and trust. It is expected that the activation of internal communication will be able to establish a foundation to act as a channel for external communication.
[en] Aim of the study: Integrated information tools models are fundamental for analyzing supply chains as regards pattern of consumption and production. These models are very useful for availability estimations of natural resources when social and environmental uncertainties need to be addressed, as it is the case for forest wood supply chains. This work presents an analysis of a forest wood supply chain focusing on forest operations to estimate the availability of round-wood volume restricted by technical constraints using a local case study in Mexico. The theoretical and technical potentials of woody biomass availability were reviewed considering an assessment of forest operations for round-wood production. Area of the study: municipality of Santa Maria del Rio S.L.P. inside the forested land of San Antonio in Mexico. Material and methods: Geographical, historical and socioeconomic data and field work were used to develop technical constraints as extraction limits. Felling and extraction operations were analyzed resulting in a production rate of 2.48 m3 per productive machine hour. Main results: The theoretically produced standing timber accounted to 21,132 m3. After simulating technical constraints, the technically feasible supply of round-wood accounted to 2, 113 m3. Furthermore, a biomass flow chart for tracing biomass along the system boundaries was developed. Research highlights: With the given results, it is possible to give recommendations and conclusions for the improvement of wood supply chains supported by time studies values, technical constraints on terrain slope, harvesting intensity and mechanization level.
[en] Highlights: • Wetland loss and degradation due to agriculture is historic and global. • Wetland conservation and agro-development shift from competition to coexistence. • Wetland recreational agriculture can obtain a harmonious relationship between them. • Despite management challenges, joint actions are recommended for the implementation. - Abstract: Agricultural development at the expense of natural wetlands is an historic and global phenomenon. The wetland-agriculture shift in ecological interactions from competition to coexistence requires more sustainable modes of development to balance wetland conservation with agriculture. Considering that the recreational values of wetlands have been gaining recognition, the concepts, types, development pathways and management challenges of wetland recreational agriculture are proposed here based on an analysis of the evolution of wetland-agriculture interactions as well as lessons and experiences derived from case studies of wetland agriculture. Through learning from traditional eco-agricultural ideas and using modern agricultural technology, wetland recreational agriculture is committed to delivering multiple ecosystem services, increasing the profitability of wetland agriculture and realizing a balance between public and private interests. Six practical guidelines are proposed, and the joint action of local residents, enterprises, scientists, governments, NGOs, and volunteers is recommended to drive the implementation of specific wetland recreational agricultural practices.