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- Thomas, HS, et al.
(författare)
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- 2019
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swepub:Mat__t
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| 2. |
- Sarkar, Santosh Kumar, et al.
(författare)
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Chilika lake
- 2012. - 1
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Ingår i: Encyclopedia of lakes and reservoirs. - Dordrecht : Springer. - 9781402056161 - 9781402044106 ; , s. 148-156
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Bokkapitel (refereegranskat)
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| 3. |
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| 4. |
- Jena, Kalyan Kumar, et al.
(författare)
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E-learning course recommender system using collaborative filtering models
- 2023
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Ingår i: Electronics. - : MDPI. - 2079-9292. ; 12:1
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Tidskriftsartikel (refereegranskat)abstract
- e-Learning is a sought-after option for learners during pandemic situations. In e-Learning platforms, there are many courses available, and the user needs to select the best option for them. Thus, recommender systems play an important role to provide better automation services to users in making course choices. It makes recommendations for users in selecting the desired option based on their preferences. This system can use machine intelligence (MI)-based techniques to carry out the recommendation mechanism. Based on the preferences and history, this system is able to know what the users like most. In this work, a recommender system is proposed using the collaborative filtering mechanism for e-Learning course recommendation. This work is focused on MI-based models such as K-nearest neighbor (KNN), Singular Value Decomposition (SVD) and neural network–based collaborative filtering (NCF) models. Here, one lakh of Coursera’s course review dataset is taken from Kaggle for analysis. The proposed work can help learners to select the e-Learning courses as per their preferences. This work is implemented using Python language. The performance of these models is evaluated using performance metrics such as hit rate (HR), average reciprocal hit ranking (ARHR) and mean absolute error (MAE). From the results, it is observed that KNN is able to perform better in terms of higher HR and ARHR and lower MAE values as compared to other models.
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| 8. |
- Lobin, Kanta Kumar, et al.
(författare)
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A meta-analysis of climatic conditions and whitefly Bemisia tabaci population: implications for tomato yellow leaf curl disease
- 2022
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Ingår i: JOURNAL OF BASIC AND APPLIED ZOOLOGY. - : Springer Nature. - 2090-9896 .- 2090-990X. ; 83:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Tomato yellow leaf curl disease (TYLCD), which is caused by the genus Begomovirus, is basically transmitted by the vector whitefly, Bemisia tabaci (B. tabaci). It remains a destructive disease of tomato across the world. The disease is present in many tomato growing countries, and it has a broad geographical distribution. The population and distribution of the vector are therefore an important factor in disease spread. This study assesses the determinants of the relationship between climatic factors and whitefly population. A thorough search of relevant papers was first initiated, and eventually 16 articles with 142 estimates were selected. A meta-regression analysis, especially the random-effects model with a restricted maximum likelihood (REML) estimator, was applied.Results: Summarization of effect sizes revealed a mean effect size for the study of r = 0.15. The forest plot suggested a significant amount of study heterogeneity. No evidence of significant publication bias was uncovered. The meta-analysis revealed that the population of whiteflies was significantly related to climatic independent variables such as maximum and minimum temperature and rainfall. Other factors such as altitude, number of symptoms, pesticide policy, type of soil, number of references, impact factor and publication status were found to significantly influence the effect sizes.Conclusions: Whiteflies are playing a major role in spreading the TYLCD. Several factors were identified to have a significant impact on the climatic conditions-whitefly population nexus. Since climatic factors, altitude, existing pesticide laws and type of soil were found to have a significant impact on the effect sizes, agricultural management policies could be enacted by specifically considering those factors in a view to minimize the impact of whiteflies. In general, all the above factors could be considered in strategy to manage TYLCD.
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| 9. |
- Raza, Karim, et al.
(författare)
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Delays in assessment of patients with rheumatoid arthritis: variations across Europe
- 2011
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Ingår i: Annals of the Rheumatic Diseases. - London : BMJ. - 1468-2060 .- 0003-4967. ; 70:10, s. 1822-1825
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Tidskriftsartikel (refereegranskat)abstract
- Objective The first 3 months after symptom onset represent an important therapeutic window for rheumatoid arthritis (RA). This study investigates the extent and causes of delay in assessment of patients with RA in eight European countries. Method Data on the following levels of delay were collected from 10 centres (Berlin, Birmingham, Heraklion, Lund, Prague, Stockholm, Umea, Vienna, Warsaw and Zurich): (1) from onset of RA symptoms to request to see healthcare professional (HCP); (2) from request to see HCP to assessment by that HCP; (3) from initial assessment by HCP to referral to rheumatologist; and (4) from referral to rheumatologist to assessment by that rheumatologist. Results Data were collected from 482 patients with RA. The median delay across the 10 centres from symptom onset to assessment by the rheumatologist was 24 weeks, with the percentage of patients seen within 12 weeks of symptom onset ranging from 8% to 42%. There were important differences in the levels underlying the total delays at individual centres. Conclusions This research highlights the contribution of patients, professionals and health systems to treatment delay for patients with RA in Europe. Although some centres have strengths in minimising certain types of delay, interventions are required in all centres to ensure timely treatment for patients.
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| 10. |
- Simons, Gwenda, et al.
(författare)
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Perceptions of first-degree relatives of patients with rheumatoid arthritis about lifestyle modifications and pharmacological interventions to reduce the risk of rheumatoid arthritis development : a qualitative interview study
- 2018
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Ingår i: BMC Rheumatology. - : Springer Nature. - 2520-1026. ; 2:1
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Tidskriftsartikel (refereegranskat)abstract
- BackgroundThere is increasing interest in the identification of people at risk of rheumatoid arthritis (RA) to monitor the emergence of early symptoms (and thus allow early therapy), offer lifestyle advice to reduce the impact of environmental risk factors and potentially offer preventive pharmacological treatment for those at high risk. Close biological relatives of people with RA are at an increased risk of developing RA and are therefore potential candidates for research studies, screening initiatives and preventive interventions. To ensure the success of approaches of this kind, a greater understanding of the perceptions of this group relating to preventive measures is needed.MethodsTwenty-four first-degree relatives of patients with an existing diagnosis of RA from the UK, three from Germany and seven from Austria (age: 21-67 years) took part in semi-structured interviews exploring their perceptions of RA risk, preventive medicine and lifestyle changes to reduce RA risk. Interviews were audio-recorded, transcribed verbatim and analysed using thematic analysis.ResultsMany first-degree relatives indicated that they anticipated being happy to make lifestyle changes such as losing weight or changing their diet to modify their risk of developing RA. Participants further indicated that in order to make any lifestyle changes it would be useful to know their personal risk of developing RA. Others implied they would not contemplate making lifestyle changes, including stopping smoking, unless this would significantly reduce or eliminate their risk of developing RA. Many first-degree relatives had more negative perceptions about taking preventive medication to reduce their risk of RA, and listed concerns about potential side effects as one of the reasons for not wanting to take preventive medicines. Others would be more willing to consider drug interventions although some indicated that they would wish to wait until symptoms developed.ConclusionsInformation targeted at those considered to be at risk of RA should contain information about RA, the extent to which risk can be quantified at an individual level and how risk levels may differ depending on whether early symptoms are present. The benefits (and risks) of lifestyle changes and pharmacological interventions as potential preventive measures should be clearly described.
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