83 research outputs found
A stream processing framework based on linked data for information collaborating of regional energy networks
Β© 2005-2012 IEEE. Coordinating of energy networks to form a city-level multidimensional integrated energy system becomes a new trend in Energy Internet (EI). The collaborating in the information layer is a core issue to achieve smart integration. However, the heterogeneity of multiagent data, the volatility of components, and the real-time analysis requirement in EI bring significant challenges. To solve these problems, in this article we propose a stream processing framework based on linked data for information collaboration among multiple energy networks. The framework provides a universal data representation based on linked data and semantic relation discovery approach to model and semantically fuse heterogeneous data. Semantics-based information transmission contracts and channels are automatically generated to adapt to structural changes in EI. A multimodel-based dynamic adjusting stream processing is implemented using data semantics. A real-world case study is implemented to demonstrate the adaptability, feasibility, and flexibility of the proposed framework
Domain size and charge defects on the polarization switching of antiferroelectric domains
The switching behavior of antiferroelectric domain structures under the
applied electric field is not fully understood. In this work, by using the
phase field simulation, we have studied the polarization switching property of
antiferroelectric domains. Our results indicate that the ferroelectric domains
nucleate preferably at the boundaries of the antiferroelectric domains, and
antiferroelectrics with larger initial domain sizes possess a higher coercive
electric field as demonstrated by hysteresis loops. Moreover, we introduced
charge defects into the sample and numerically investigated their influence. It
is also shown that charge defects can induce local ferroelectric domains, which
could suppress the saturation polarization and narrow the enclosed area of the
hysteresis loop. Our results give insights into understanding antiferroelectric
phase transformation and optimizing the energy storage property in experiments
Septic arthritis with osteomyelitis due to Salmonella enterica serotype Dublin: A case series
BackgroundSeptic arthritis with osteomyelitis due to Salmonella enterica serotype Dublin is rare. We reviewed and analyzed cases of septic arthritis with osteomyelitis due to Salmonella enterica serotype Dublin seen at our institution.MethodsThe medical records of all patients diagnosed with Salmonella septic arthritis and/or Salmonella osteomyelitis during 2017β2022 were included. We reviewed the diagnosis, medical history, clinical management, and outcome of all cases.ResultsFive patients with Salmonella septic arthritis or Salmonella osteomyelitis were identified during the 5-year study period. They were all male; the median age was 53 years (range 15β56). Only one was immunodeficient. All five patients were infected at the hip joint and ipsilateral femur, while two suffered bilateral hip septic arthritis with femoral osteomyelitis. Salmonella Dublin was isolated from the hip joint fluid of all patients. Four presented with fever and constitutional signs within four weeks of symptom onset. Four had positive blood cultures, and only one patient had gastrointestinal symptoms. Four patients underwent surgical debridement as the primary surgical plan, and two underwent secondary two-stage exchange after primary surgical debridement failure. The last patient had a two-stage exchange directly as the first surgical treatment. All patients received intravenous antimicrobial therapy for a median duration of 6 (range 4β12) weeks and oral antimicrobial therapy for a median duration of 4 (range 4β6) weeks. All patients had a median duration of follow-up of 12 months (range 9β25), and none had evidence of recurrence of infection.ConclusionsSeptic arthritis due to Salmonella Dublin remains rare. It frequently occurs with ipsilateral femur osteomyelitis adjacent to the infected hip joint in our cases. Surgical debridement or two-stage exchange, along with 4β12 weeks of effective intravenous and followed by 4β6 oral antimicrobial therapy, could successfully eradicate the infection
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