Multiresolution analysis of point processes and statistical thresholding for wavelet-based intensity estimation

We take a wavelet based approach to the analysis of point processes and the estimation of the first order intensity under a continuous time setting. A multiresolution analysis of a point process is formulated which motivates the definition of homogeneity at different scales of resolution, termed $J$-th level homogeneity. Further to this, the activity in a point processes' first order behavior at different scales of resolution is also defined and termed $L$-th level innovation. Likelihood ratio tests for both these properties are proposed with asymptotic distributions provided, even when only a single realization of the point process is observed. The test for $L$-th level innovation forms the basis for a collection of statistical strategies for thresholding coefficients in a wavelet based estimator of the intensity function. These thresholding strategies are shown to outperform the existing local hard thresholding strategy on a range of simulation scenarios.Comment: 48 pages, 8 figure

Characterization and treatment of effluents loaded with sulphides from two tanneries: Modern and Artisanal

The objective of this work is to characterize and treat wastewater loaded with sulphide ions from two types of modern and artisanal tanneries.  A preliminary diagnosis was made of both types of artisanal and modern tanneries and showed that modern tanneries consume more water and chemicals than traditional tanneries. The most sulphide-laden steps are those of unhairing-liming and lime baths for modern and artisanal tanneries respectively.The physicochemical characterization of the wastewater from the different operating units of the two types of tanneries shows that the unhairing-liming and lime baths steps are the most loaded with sulphides, in addition to their high load of non-biodegradable organic material.However, we note that wastewater from artisan tanneries is less polluting than that from modern tanneries. The treatment of sulphide ions was first carried out on a synthetic solution at different concentrations by precipitating sulphides with ferric chloride at pH adjusted according to the Pourbaix diagram. The results of the treatment of the synthetic solution of concentration 1500 mg.L-1 allowed the reduction of 91% of sulphide to pH = 8.5.The analysis of the precipitate formed by the X-ray diffraction records the presence of gypsum. The treatment of wastewater from the unhairing-liming units of modern and artisanal tanneries by ferric chloride 1.2 and 0.8 mol.L-1 respectively under the optimum conditions raised leads to a reduction of the non-biodegradable organic load of almost 96% and those of sulphide ions of about 90% for both types of tanneries.

Communicating risk under high uncertainty: developing cross-disciplinary knowledge

The primary purpose of this Special Issue is to coalesce different perspectives on the theme of ‘Communicating Risk Under High Uncertainty’ from across a range of subject areas. These areas include environmental studies, international relations, engineering, sociology, psychology, media studies, the health sciences, criminology and anthropology. By bringing different perspectives together, we anticipate that commonalities and points of concurrence will help to identify cross-disciplinary synergies and provide opportunities to explore the potential for a more holistic understanding of risk communication in the academy and beyond

A Dynamic Service Level Negotiation Mechanism for QoS Provisioning in NGEO Satellite Networks

科研費報告書収録論文(課題番号:17500030/研究代表者:加藤寧/インターネットと高親和性を有する次世代低軌道衛星ネットワークに関する基盤研究

Inappropriate prescribing in hospitalized elderly patients

Inappropriate prescribing (IP) is a major healthcare problem in elderly patients. The risk of this problem increases during hospitalization. This is due to increase morbidity and thus increases the use of medications by the inpatients. This study will clarify the problem of IP for elderly people during hospitalization and will identify the different types of it. It also will highlight some tools that are used to assess the different types of IP and the prevalence of it in elderly patients during hospitalization. Finally, the study will address the consequences of IP in the elderly inpatients and the risks associated with the use of some potentially inappropriate medications (PIMs) in the elderly.

Evaluation of inappropriate prescribing to the hospitalized elderly patients in Al Shifa hospital, Gaza, Palestine

Background: The current study aimed to assess the prevalence of inappropriate prescribing (IP) for hospitalized elderly patients at Al Shifa Hospital, Gaza, Palestine.Methods: This study was a retrospective cross-sectional study. A total of 2385 prescribed drugs for 380 elderly inpatients in internal, cardiology, and respiratory departments were screened for IP. Four criteria were used to detect IP using chart review method; Drug-drug interactions (DDIs), drug contra-indications (CI), duplication of therapy and Beers' criteria 2012.Results: The results showed that 44.2% of patients had at least one IP. Around 33.2% of the patients had DDIs, 19.2% had IP according to Beers' criteria and 1.1% had drug CI. There was no duplication of therapy. A total of 323 IP instances were detected. Of them, 74% for DDIs and 24.8% for Beers' criteria. The prevalence of overall IP was significantly influenced by age (p-value=0.024), polypharmacy (p-value<0.001), degree of morbidity (p-value<0.001), and departments (p-value=0.018). The prevalence of DDIs was influenced by polypharmacy (p-value<0.001), degree of morbidity (p-value=0.001), and departments (p-value=0.005). Finally, the prevalence of IP according to Beers' criteria was significantly influenced by departments with the highest in the cardiology department (29.7%) (P-value=0.007).Conclusions: Although the overall IP was common, it was not far higher than that reported worldwide. The majority of IP was DDIs. Age, polypharmacy, degree of morbidity and departments influenced the occurrence of IP

On how to Mitigate the Packet Reordering Issue in the Explicit Load Balancing Scheme

科研費報告書収録論文(課題番号:17500030/研究代表者:加藤寧/インターネットと高親和性を有する次世代低軌道衛星ネットワークに関する基盤研究

Uncommon mimics of appendicitis: Giant mucocele

Appendiceal mucocele is an infrequent but well recognized entity that can present with a variety of clinical syndromes or can be asymptomatic and discovered incidentally. A 55 years old patient was admitted in the emergency department for acute right lower quadrant pain. A diagnosis of appendicitis was made. At operation an appendiceal mucocele was found. An appendectomy was performed. The diagnosis of appendiceal mucocele is an important one in that it can be associated with malignancies and other serious gastrointestinal, ovarian, and urological complications

A Stable Routing Protocol to Support ITS Services in VANET Networks

科研費報告書収録論文(課題番号:17500030/研究代表者:加藤寧/インターネットと高親和性を有する次世代低軌道衛星ネットワークに関する基盤研究