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  • Hindawi Limited  (36)
Medientyp
Verlag/Herausgeber
  • Hindawi Limited  (36)
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Erscheinungszeitraum
  • 1
    Online-Ressource
    Online-Ressource
    Hindawi Limited ; 2022
    In:  Security and Communication Networks Vol. 2022 ( 2022-3-22), p. 1-14
    In: Security and Communication Networks, Hindawi Limited, Vol. 2022 ( 2022-3-22), p. 1-14
    Kurzfassung: Alzheimer’s disease (AD), a growing global health concern, has been posing a significant threat to the health of the aging population. The factors contributing to the occurrence and development of AD are extremely complex, including multiple neural networks and multiple targets, which join together to formulate enormous challenges in AD treatment. Traditional Chinese medicine (TCM) possesses the characteristics to regulate multiple targets at the same time, which is consistent with the pathogenesis of AD, moreover, clinical results in TCM treating AD reveal promising effects. In this paper, we first collected anti-Alzheimer’s prescriptions and their therapeutic effects from commonly used literature databases and expanded the data to form the anti-Alzheimer’s TCM dataset. Next, we combined machine learning models to train and analyze the dataset, which was used to predict the effectiveness of new TCM prescriptions. For the first time, we proposed to use the artificial intelligence method to train the properties of nature, flavor, and channel tropism in TCM prescriptions. The accuracy of the prediction model for the effectiveness of anti-Alzheimer’s can reach up to 85%. The experimental results demonstrated that our method can precisely predict the effectiveness of prescriptions against Alzheimer’s disease, and have great value in providing guidance for the development of new anti-Alzheimer’s drugs. Finally, we built a distributed model training architecture based on federated learning to train and predict the effectiveness of TCM prescriptions under the premise of ensuring data security.
    Materialart: Online-Ressource
    ISSN: 1939-0122 , 1939-0114
    Sprache: Englisch
    Verlag: Hindawi Limited
    Publikationsdatum: 2022
    ZDB Id: 2415104-X
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  • 2
    Online-Ressource
    Online-Ressource
    Hindawi Limited ; 2017
    In:  Complexity Vol. 2017 ( 2017), p. 1-10
    In: Complexity, Hindawi Limited, Vol. 2017 ( 2017), p. 1-10
    Kurzfassung: Recurrent neural network (RNN) has been widely applied to many sequential tagging tasks such as natural language process (NLP) and time series analysis, and it has been proved that RNN works well in those areas. In this paper, we propose using RNN with long short-term memory (LSTM) units for server load and performance prediction. Classical methods for performance prediction focus on building relation between performance and time domain, which makes a lot of unrealistic hypotheses. Our model is built based on events (user requests), which is the root cause of server performance. We predict the performance of the servers using RNN-LSTM by analyzing the log of servers in data center which contains user’s access sequence. Previous work for workload prediction could not generate detailed simulated workload, which is useful in testing the working condition of servers. Our method provides a new way to reproduce user request sequence to solve this problem by using RNN-LSTM. Experiment result shows that our models get a good performance in generating load and predicting performance on the data set which has been logged in online service. We did experiments with nginx web server and mysql database server, and our methods can been easily applied to other servers in data center.
    Materialart: Online-Ressource
    ISSN: 1076-2787 , 1099-0526
    Sprache: Englisch
    Verlag: Hindawi Limited
    Publikationsdatum: 2017
    ZDB Id: 2004607-8
    SSG: 11
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  • 3
    Online-Ressource
    Online-Ressource
    Hindawi Limited ; 2013
    In:  Computational and Mathematical Methods in Medicine Vol. 2013 ( 2013), p. 1-9
    In: Computational and Mathematical Methods in Medicine, Hindawi Limited, Vol. 2013 ( 2013), p. 1-9
    Kurzfassung: Previous studies have shown that the dorsal premotor cortex (PMd) neurons are relevant to reaching as well as grasping. In order to investigate their specific contribution to reaching and grasping, respectively, we design two experimental paradigms to separate these two factors. Two monkeys are instructed to reach in four directions but grasp the same object and grasp four different objects but reach in the same direction. Activities of the neuron ensemble in PMd of the two monkeys are collected while performing the tasks. Mutual information (MI) is carried out to quantitatively evaluate the neurons’ tuning property in both tasks. We find that there exist neurons in PMd that are tuned only to reaching, tuned only to grasping, and tuned to both tasks. When applied with a support vector machine (SVM), the movement decoding accuracy by the tuned neuron subset in either task is quite close to the performance by full ensemble. Furthermore, the decoding performance improves significantly by adding the neurons tuned to both tasks into the neurons tuned to one property only. These results quantitatively distinguish the diversity of the neurons tuned to reaching and grasping in the PMd area and verify their corresponding contributions to BMI decoding.
    Materialart: Online-Ressource
    ISSN: 1748-670X , 1748-6718
    Sprache: Englisch
    Verlag: Hindawi Limited
    Publikationsdatum: 2013
    ZDB Id: 2256917-0
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  • 4
    Online-Ressource
    Online-Ressource
    Hindawi Limited ; 2022
    In:  Evidence-Based Complementary and Alternative Medicine Vol. 2022 ( 2022-6-24), p. 1-6
    In: Evidence-Based Complementary and Alternative Medicine, Hindawi Limited, Vol. 2022 ( 2022-6-24), p. 1-6
    Kurzfassung: Objective. To investigate the correlation between Chinese medicine syndrome and cognitive dysfunction in patients with mild cognitive impairment (MCI). Methods. 121 MCI patients were included for syndrome differentiation and syndrome scoring according to the Chinese medicine syndrome classification standard of senile dementia. The cognitive function and cognitive subitems (including visual space and executive function, naming, attention, language, abstraction, delayed recall, and orientation) of patients with different Chinese medicine syndromes were scored with the Montreal Cognitive Assessment (MoCA). Correlation analysis was made on Chinese medicine syndromes and cognitive domain damage. Results. Chinese medicine syndromes from most to least were kidney deficiency and marrow reduction syndrome, turbid phlegm obstructing orifices syndrome, deficiency of heart and spleen syndrome, qi stagnation and blood stasis syndrome, and yin deficiency of heart and liver syndrome. There were no significant differences in MoCA scores among different Chinese medicine syndromes ( P 〉 0.05 ).In the kidney deficiency and marrow reduction syndrome, the delayed recall score was 1.74 ± 1.23 and the difference was statistically significant when compared with deficiency of heart and spleen syndrome or the yin deficiency of heart and liver syndrome ( P 〈 0.05 ). In the turbid phlegm obstructing orifices syndrome, the delayed recall score was 1.81 ± 1.33 and the difference was statistically significant when compared with the yin deficiency of heart and liver syndrome ( P 〈 0.05 ). There was a significant negative correlation between the kidney deficiency and marrow reduction syndrome’s Chinese medicine syndrome scores and MoCA scores ( P 〈 0.01 ), and there was a negative correlation between the turbid phlegm obstructing orifices syndrome’s Chinese medicine syndrome scores and MoCA scores ( P 〈 0.05 ). Correlation analysis showed that the kidney deficiency and marrow reduction syndrome was significantly negatively correlated with delayed recall scores ( P 〈 0.01 ), and it was also negatively correlated with visual space and executive function scores ( P 〈 0.05 ). The turbid phlegm obstructing orifices syndrome was significantly negatively correlated with delayed recall scores ( P 〈 0.01 ). Conclusion. The kidney deficiency and marrow reduction syndrome and the turbid phlegm obstructing orifices syndrome were the most common syndromes in MCI. Patients with kidney deficiency and marrow reduction syndrome might have obvious damage in delayed recall function and have damage in visual space and executive function. Patients with turbid phlegm obstructing orifices syndrome might have obvious damage in delayed recall function.
    Materialart: Online-Ressource
    ISSN: 1741-4288 , 1741-427X
    Sprache: Englisch
    Verlag: Hindawi Limited
    Publikationsdatum: 2022
    ZDB Id: 2148302-4
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  • 5
    In: BioMed Research International, Hindawi Limited, Vol. 2019 ( 2019-03-26), p. 1-13
    Kurzfassung: Background. Accumulating evidence has demonstrated the pivotal role of long noncoding RNAs (lncRNAs) in competing endogenous RNA (ceRNA) networks for predicting survival and evaluating prognosis in cancer patients. However, the pathogenesis of head and neck squamous cell carcinoma (HNSCC) remains unclear, and prognostic biomarkers for HNSCC are still lacking. Methods. A total of 546 RNA sequencing profiles of HNSCC patients with clinical outcome data were obtained from the Cancer Genome Atlas (TCGA) database, providing a large sample of RNA sequencing data. From these, 71 Long noncoding RNAs lncRNAs, 8 microRNAs (miRNAs), and 16 messenger RNAs (mRNAs) were identified to construct a HNSCC-specific ceRNA network (fold change 〉 2, P 〈 0.05). Univariate and multivariate Cox proportional regression models were used to assess independent indicators of prognosis. Then the expression of lncRNAs harboring prognostic value was validated in human HNSCC cell lines and tumor samples from our cohort and another two datasets from GEO (Gene Expression Omnibus) databases. Results. As a result, a 3-mRNA signature and 6-lncRNA signature were identified. The six-lncRNA signature exhibited the highest prognostic value. Notably, in the six lncRNAs, HOTTIP showed the greatest prognostic value and was significantly correlated with clinical stage and histological grade of HNSCC patients. Furthermore, it was proved that HOTTIP was upregulated in HNSCC cell lines and cancerous tissues compared with corresponding normal cell lines and normal tissues. Functional assessment analysis revealed that HOTTIP might play a key role in the oncogenesis and progression of HNSCC. Conclusion . The present study deepened our understanding of the ceRNA-related regulatory mechanism in the pathogenesis of HNSCC and identified candidate prognostic biomarkers for clinical outcome prediction in HNSCC. HOTTIP may function as a key candidate biomarker in HNSCC and serve as a prognostic marker for HNSCC patients.
    Materialart: Online-Ressource
    ISSN: 2314-6133 , 2314-6141
    Sprache: Englisch
    Verlag: Hindawi Limited
    Publikationsdatum: 2019
    ZDB Id: 2698540-8
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  • 6
    Online-Ressource
    Online-Ressource
    Hindawi Limited ; 2014
    In:  BioMed Research International Vol. 2014 ( 2014), p. 1-6
    In: BioMed Research International, Hindawi Limited, Vol. 2014 ( 2014), p. 1-6
    Kurzfassung: Objective . To evaluate the effect of low body mass index (BMI) on blood loss during primary total hip arthroplasty (THA) in ankylosing spondylitis (AS) patients. Methods . Two hundred seventy-seven consecutive AS patients who underwent primary THA were retrospectively studied. The patients were divided by BMI into an underweight group (BMI 〈 18.5 kg/m 2 ) and a normal weight group (18.5 kg/m 2 〈 BMI 〈 25 kg/m 2 ). Demographics, perioperative laboratory values, intraoperative data, blood loss, transfusion rate, transfusion reactions, surgical complications, hospitalization cost, and length of stay (LOS) were collected and analyzed. Results . Of 277 AS patients, 236 were eligible for inclusion in the study. A total of 91 (39%) patients were underweight. The hidden blood loss, transfusion rate, transfusion reactions, and hospitalization cost in the underweight group were significantly higher than those in the normal weight group. Conclusions . For AS patients, BMI appears to be correlated with blood loss during primary THA. Compared with patients of normal weight, low BMI patients have the potential to suffer more postoperative hidden blood loss and to require a higher transfusion rate.
    Materialart: Online-Ressource
    ISSN: 2314-6133 , 2314-6141
    Sprache: Englisch
    Verlag: Hindawi Limited
    Publikationsdatum: 2014
    ZDB Id: 2698540-8
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  • 7
    In: BioMed Research International, Hindawi Limited, Vol. 2019 ( 2019-02-27), p. 1-8
    Kurzfassung: It is still vague for chronic hepatitis B (CHB) patients with normal or mildly increasing alanine aminotransferase (ALT) level to undergo antiviral treatment or not. The purpose of our study was to establish a noninvasive model based on routine blood test to predict liver histopathology for antiviral therapy. This retrospective study enrolled 258 CHB patients with liver biopsy from the First Hospital of Quanzhou (training cohort, n=126) and Huashan Hospital (validation cohort, n=132). Histologic grading of necroinflammation (G) and liver fibrosis (S) was performed according to the Scheuer scoring system. A novel model, ATPI, including aspartate aminotransferase (AST), total bilirubin (TBil), and platelets (PLT), was developed in training cohort. The area under ROC curves (AUC) of ATPI for predicting antiviral therapy indication was 0.83 in training cohort and was 0.88 in the validation cohort, respectively. Similarly, ATPI also displayed the highest AUC in predicting antiviral therapy indication in CHB patients with normal or mildly increasing ALT level. In conclusion, ATPI is a novel independent model to predict liver histopathology for antiviral therapy in CHB patients with normal and mildly increased ALT levels.
    Materialart: Online-Ressource
    ISSN: 2314-6133 , 2314-6141
    Sprache: Englisch
    Verlag: Hindawi Limited
    Publikationsdatum: 2019
    ZDB Id: 2698540-8
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  • 8
    Online-Ressource
    Online-Ressource
    Hindawi Limited ; 2014
    In:  Mathematical Problems in Engineering Vol. 2014 ( 2014), p. 1-17
    In: Mathematical Problems in Engineering, Hindawi Limited, Vol. 2014 ( 2014), p. 1-17
    Kurzfassung: The core concepts of rough set theory are information systems and approximation operators of approximation spaces. Approximation operators draw close links between rough set theory and topology. This paper is devoted to the discussion of fuzzy rough sets and their topological structures. Fuzzy rough approximations are further investigated. Fuzzy relations are researched by means of topology or lower and upper sets. Topological structures of fuzzy approximation spaces are given by means of pseudoconstant fuzzy relations. Fuzzy topology satisfying (CC) axiom is investigated. The fact that there exists a one-to-one correspondence between the set of all preorder fuzzy relations and the set of all fuzzy topologies satisfying (CC) axiom is proved, the concept of fuzzy approximating spaces is introduced, and decision conditions that a fuzzy topological space is a fuzzy approximating space are obtained, which illustrates that we can research fuzzy relations or fuzzy approximation spaces by means of topology and vice versa. Moreover, fuzzy pseudoclosure operators are examined.
    Materialart: Online-Ressource
    ISSN: 1024-123X , 1563-5147
    Sprache: Englisch
    Verlag: Hindawi Limited
    Publikationsdatum: 2014
    ZDB Id: 2014442-8
    SSG: 11
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  • 9
    Online-Ressource
    Online-Ressource
    Hindawi Limited ; 2021
    In:  Complexity Vol. 2021 ( 2021-4-20), p. 1-15
    In: Complexity, Hindawi Limited, Vol. 2021 ( 2021-4-20), p. 1-15
    Kurzfassung: Many industrial processes are operated in multiple modes due to different manufacturing strategies. Multimodality of process data is often accompanied with nonlinear and non-Gaussian characteristics, which makes data-driven monitoring more complicated. In this paper, statistics pattern analysis (SPA) is introduced to extract low- and high-order statistics from raw process data. Support vector data description (SVDD), which can deal with nonlinear and non-Gaussian problems, is applied to monitor multimode process in this paper. To improve detection performance of SVDD for training multimode data with outliers, modified local reachability density ratio (mLRDR) is proposed as a weight factor to be embedded in the weighted-SVDD (wSVDD) model, in which the local neighbors in terms of both space and time are considered. Finally, the effectiveness and superiority of our proposed method are demonstrated by the Tennessee-Eastman (TE) process and wastewater treatment process (WWTP).
    Materialart: Online-Ressource
    ISSN: 1099-0526 , 1076-2787
    Sprache: Englisch
    Verlag: Hindawi Limited
    Publikationsdatum: 2021
    ZDB Id: 2004607-8
    SSG: 11
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  • 10
    Online-Ressource
    Online-Ressource
    Hindawi Limited ; 2017
    In:  Complexity Vol. 2017 ( 2017), p. 1-14
    In: Complexity, Hindawi Limited, Vol. 2017 ( 2017), p. 1-14
    Kurzfassung: With the development of mobile communication technology, location-based services (LBS) are booming prosperously. Meanwhile privacy protection has become the main obstacle for the further development of LBS. The k -nearest neighbor ( k -NN) search is one of the most common types of LBS. In this paper, we propose an efficient private circular query protocol (EPCQP) with high accuracy rate and low computation and communication cost. We adopt the Moore curve to convert two-dimensional spatial data into one-dimensional sequence and encrypt the points of interest (POIs) information with the Brakerski-Gentry-Vaikuntanathan homomorphic encryption scheme for privacy-preserving. The proposed scheme performs the secret circular shift of the encrypted POIs information to hide the location of the user without a trusted third party. To reduce the computation and communication cost, we dynamically divide the table of the POIs information according to the value of k . Experiments show that the proposed scheme provides high accuracy query results while maintaining low computation and communication cost.
    Materialart: Online-Ressource
    ISSN: 1076-2787 , 1099-0526
    Sprache: Englisch
    Verlag: Hindawi Limited
    Publikationsdatum: 2017
    ZDB Id: 2004607-8
    SSG: 11
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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