779 research outputs found

    Fingerprint positioning of users devices in long term evolution cellular network using K nearest neighbour algorithm

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    The rapid exponential growth in wireless technologies and the need for public safety has led to increasing demand for location-based services. Terrestrial cellular networks can offer acceptable position estimation for users that can meet the statutory requirements set by the Federal Communications Commission in case of network-based positioning, for safety regulations. In this study, the proposed radio frequency pattern matching (RFPM) method is implemented and tested to determine a user’s location effectively. The RFPM method has been tested and validated in two different environment. The evaluations show remarkable results especially in the Micro cell scenario, at 67% of positioning error 15m and at 90% 31.78m for Micro cell scenario, with results of 75.66m at 67% and 141.4m at 90% for Macro cell scenario

    Enhancement of permeability estimation by high order polynomial regression for capillary pressure curve correlation with water saturation

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    Suggesting a cost-effective and straightforward approach is indispensable for obtaining permeability estimates in carbonate reservoirs utilizing available well logs. In this study, several procedures were conducted to reach an optimum approach, primarily by constructing a correlation between capillary pressure and water saturation using core data plotted and utilized a good polynomial regression to obtain a better relationship, which leads to calculating the permeability. The second step is to use different theoretical models which Tixier introduces, Timur, Coats, and Dumanior, which resulted not good matching with the permeability from core analysis and modified Brown and Husseini correlation which used and gave better matching than others correlations by comparing the results with the calculated permeability depending on core data. The proposed approach in this study based on modified Husseini equation using the well logs data by applying Statistical regression techniques within capillary pressure prediction to enhance reservoir characterization can potentially advantage reservoir simulation efforts. Obtained results of permeability prediction based on capillary pressure correlation was examined for a certain well and compared with the measured permeability value of cores. There was a good matching between the predicted and measured permeability

    An Enhanced Analysis of Traffic Intelligence in Smart Cities Using Sustainable Deep Radial Function

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    Smart cities have revolutionized urban living by incorporating sophisticated technologies to optimize various aspects of urban infrastructure, such as transportation systems. Effective traffic management is a crucial component of smart cities, as it has a direct impact on the quality of life of residents and tourists. Utilizing deep radial basis function (RBF) networks, this paper describes a novel strategy for enhancing traffic intelligence in smart cities. Traditional methods of traffic analysis frequently rely on simplistic models that are incapable of capturing the intricate patterns and dynamics of urban traffic systems. Deep learning techniques, such as deep RBF networks, have the potential to extract valuable insights from traffic data and enable more precise predictions and decisions. In this paper, we propose an RBF based method for enhancing smart city traffic intelligence. Deep RBF networks combine the adaptability and generalization capabilities of deep learning with the discriminative capability of radial basis functions. The proposed method can effectively learn intricate relationships and nonlinear patterns in traffic data by leveraging the hierarchical structure of deep neural networks. The deep RBF model can learn to predict traffic conditions, identify congestion patterns, and make informed recommendations for optimizing traffic management strategies by incorporating these rich and diverse data To evaluate the efficacy of our proposed method, extensive experiments and comparisons with real world traffic datasets from a smart city environment were conducted. In terms of prediction accuracy and efficiency, the results demonstrate that the deep RBF based approach outperforms conventional traffic analysis methods. Smart city traffic intelligence is enhanced by the model capacity to capture nonlinear relationships and manage large scale data sets.Comment: 25 pages, 6 figures, and 3 Table

    Inferior alveolar nerve injury with laryngeal mask airway: a case report

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    <p>Abstract</p> <p>Introduction</p> <p>The incidence of damage to the individual cranial nerves and their branches associated with laryngeal mask airway use is low; there have been case reports of damage to the lingual nerve, hypoglossal nerve and recurrent laryngeal nerve. To the best of our knowledge we present the first reported case of inferior alveolar nerve injury associated with laryngeal mask airway use.</p> <p>Case presentation</p> <p>A 35-year-old Caucasian man presented to our facility for elective anterior cruciate ligament repair. He had no background history of any significant medical problems. He opted for general anesthesia over a regional technique. He was induced with fentanyl and propofol and a size 4 laryngeal mask airway was inserted without any problems. His head was in a neutral position during the surgery. After surgery in the recovery room, he complained of numbness in his lower lip. He also developed extensive scabbing of the lower lip on the second day after surgery. The numbness and scabbing started improving after a week, with complete recovery after two weeks.</p> <p>Conclusion</p> <p>We report the first case of vascular occlusion and injury to the inferior alveolar nerve, causing scabbing and numbness of the lower lip, resulting from laryngeal mask airway use. This is an original case report mostly of interest for anesthetists who use the laryngeal mask airway in day-to-day practice. Excessive inflation of the laryngeal mask airway cuff could have led to this complication. Despite the low incidence of cranial nerve injury associated with the use of the laryngeal mask airway, vigilant adherence to evidence-based medicine techniques and recommendations from the manufacturer's instructions can prevent such complications.</p

    A study of Immune Response in Cyprinus carpio Infected with Aeromonas hydrophila and Treated by Alhagi maoururum Powder.

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    أجري البحث لغرض تقدير الاستجابة المناعية لاسماك الكارب الاعتيادي المخمجة ببكتريا Aeromonas hydrophila والمعالجة بمسحوق جذور نبات العاقول ، ولهذا الغرض فقد استعمل بالبحث 60 سمكة كارب اعيادي ووزعت على ستة معاملات , المعاملة الاولى اعطيت 2.5% غم من مسحوق جذور نبات العاقول و3.0% غم الى الحوض الثاني و3.5% للحوض الثالث اما الحوض الرابع فقد اعطيت الاسماك فيه على عليقة سيطرة بدون اضافات وحقنت باللقاح المميت لبكتريا الهايدروفيلا والحوض الخامس اعطيت الاسماك فيه على عليقة سيطرة بدون اضافات وحقنت بالماء الملح الوظيفي , اما المعاملة السادسة عدت معاملة سيطرة بعد تغذيتها على عليقة السيطرة . بينت نتائج البحث الى&nbsp; تفوق معنوي (p&lt;0.05) في مستوى البروتين الكلي من جراء اضافة مسحوق جذور نبات العاقول على باقي المعاملات وادى التخميج ببكتريا الهايدروفيلا الى اعلى استجابة مناعية ثانوية وكانت الاستجابة المناعية الثانوية في اعلى المستويات لدى استعمال مسحوق جذور نبات العاقول بنسبة 3.5% لعيار تلازن 1280 وتم تشخيص البلاعم الكبيرة ذات الميلانين في المقاطع النسيجية للطحال عند استعمال مسحوق جذور نبات العاقول بكل التراكيز والبكتريا المقتولة بالحرارة والسيطرة ونستخلص من هذه الدراسة ان مسحوق جذور نبات العاقول بتركيز 3.5% له دور كبير في التحفيز المناعي مقارنة مع معاملة السيطرة. &nbsp;The research was conducted to estimate the immune response of cyprinuscarpio fishes which are infected with A.hydrophila and treated by Alhagi root powder, for this reason atotal number of 60 fishes were used, those fishes were allotted on 6 treatments, The 1st treatment was given 2.5% of Alhagi root powder, The 2nd treatment was given 3.0% , The 3rdtreatment was given 3.5% Alhagi root powder. Mean while the 4thtreatment was given a control diet with out any supplement but fishes in this treatment were injected by A..hydrophila vaccine, the 5thtreatment was given a control diet and injected by the normal saline. Moreover the the 6th treatment was considered as a control treatment and fed on the control diet. Results showed a significant surpassing (p&lt;0.05)of total protein in fishes due to supplementing the powder of Alhagirooton other treatments. Infection with A.hydrophila induced the highest secondary immune response. The war increase of Melano Macrophage Center in the spleen tissues due to supplementing the powder 3.5% of Alhagi root powder as compared to normal spleen . Alhagi root powder was shown to be expand the immune axis when compared to control. &nbsp

    Reductions in plasma endocannabinoids following bariatric surgery in morbidly obese females with impaired glucose homeostasis: a non-randomized prospective study

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    Reductions in plasma endocannabinoids following bariatric surgery in morbidly obese females with impaired glucose homeostasis: A non-randomized prospective study • Endocannabinoids (ECs) are bioactive lipid mediators − N-arachidonyl ethanolamine (AEA) − N-palmitoyl ethanolamine (PEA) − N-oleoyl ethanolamine (OEA) − related N-acylethanolamine (NAE) derivatives − 2-arachidonyl glycerol (2-AG) • Endocannabinoid system (ECS) plays a critical role in regulation of body weight and may have a role in aetiopathogenesis of Type 2 Diabetes (T2DM) • Elevated circulating levels of AEA and 2-AG in obese people compared to non-obese controls of both genders • Little information available on the effects of extreme weight loss associated with bariatric surgery in relation to the ECS

    Oxide nanoparticle exsolution in Lu-doped (Ba,La)CoO3

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    This study investigated Lu doping of BaLaCoO and its influence on the exsolution of oxide nanoparticles (NPs). As a result of Lu doping, we observed the phase segregation into the main BaLaCoLuO (BLCO-Lu) phase and the secondary BaLaCoLuO (BCO-Lu) phase. We noticed the exsolution of BCO-Lu nanoparticles on the main BLCO-Lu phase. Moreover, the BLCO-Lu phase exsolved in the form of nanoparticles on the adjacent BCO-Lu grains. That shows that the phases are covered with mutually exsolved oxide NPs. In addition, trace amounts of the BaLuCoO phase are detected. We noticed that the exsolved oxides even in the as-prepared sample were fine (average size of 18 nm), and well distributed with a dense population of NPs above 280 per 1 μm. Furthermore, we showed that the size and shape of the exsolved oxide NPs can be controlled by varying the annealing temperature. For example, at 800 °C the exsolved oxides segregate and form two different shapes; spherical and cuboidal, with an average size of 31 nm and NP population of about 23 NPs per μm. Meanwhile, with lowering the temperature to 400 °C the oxides form only spherical and quite evenly distributed NPs with the occurrence of 137 NPs per 1 μm. The obtained results open the possibility of tailoring a novel, more catalytically active material for future applications in electrochemical devices.Project FunKeyCat is supported by the National Science Centre, Poland under the M-ERA.NET 2, which has received funding from the European Union's Horizon 2020 research and innovation program under grant agreement no 685451. The Research Council of Norway is also acknowledged for support to the Norwegian Center for Transmission Electron Microscopy (NORTEM) (no. 197405/F50)

    Robust anti-nociceptive effects of MAG lipase inhibition in a model of osteoarthritis pain

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    BACKGROUND AND PURPOSE: Chronic pain is often a symptom of knee osteoarthritis (OA) for which current analgesics are either inadequate, or are associated with serious side effects. The endocannabinoid system may offer alternative targets for pain-relief. We evaluated the effects of a potent and selective MAG lipase inhibitor (MJN110) on OA pain behaviour, spinal mechanisms of action and joint histopathology in the rat. Experimental approach: Intra-articular injection of monosodium iodoacetate (MIA) models OA pain and mimics clinical joint pathology. Effects of MJN110 on MIA-induced weight bearing asymmetry and lowered paw withdrawal thresholds (PWTs), changes in spinal gene expression and brain levels of relevant lipids were determined. Key results: Acute MJN110 (5 mg·kg−1) significantly reversed MIA induced weight bearing asymmetry (MIA /vehicle: 68 ± 6g; MIA /MJN110: 35 ± 4g, p<0.05) and lowered ipsilateral PWTs (MIA /vehicle: 7 ± 0.8g; MIA /MJN110: 11 ± 0.6g, p<0.05), via both CB1 and CB2 receptors. Repeated treatment with MJN110 (5 mg·kg−1) resulted in anti-nociceptive tolerance. A lower dose of MJN110 (1 mg·kg−1) acutely inhibited pain behaviour, which was maintained for one week of repeated administration, but had no effect on joint histology. MJN110 significantly inhibited expression of MPGES1 (p<0.05) in the ipsilateral dorsal horn of the spinal cord of MIA rats, compared to vehicle treated MIA rats. Both doses of MJN110 significantly elevated brain levels of the endocannabinoid 2-AG. Conclusions and Implications: Our data support the further investigation of the therapeutic potential of MAG lipase inhibitors for the treatment of OA pain

    Remote Ischaemic Conditioning after Stroke Trial (RECAST): a pilot randomised placebo controlled phase II trial in acute ischaemic stroke (ISRCTN 86672015)

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    Background:Repeated episodes of limb ischaemia and reperfusion (remote ischaemic conditioning, RIC) may improve outcome after acute stroke.Methods:We performed a pilot blinded placebo-controlled trial in patients with acute ischaemic stroke, randomised 1:1 to receive four cycles of RIC within 24 hours of ictus. The primary outcome was tolerability and feasibility. Secondary outcomes included safety, clinical efficacy (day 90), putative biomarkers (pre- and post intervention, day 4) and exploratory haemodynamic measures.Findings:Twenty-six patients (13 RIC, 13 sham) were recruited 15.8 hours (SD 6.2) post onset, age 76·2 years (10.5), blood pressure 159/83mmHg (25/11) and NIHSS 5 [IQR 3.75-9.25]. RIC was well tolerated with 49/52 cycles completed in full. Three patients experienced vascular events in the sham group: two ischaemic strokes and two myocardial infarcts versus none in the RIC group (p=0·076, log-rank test). Compared to sham, there was a significant decrease in day 90 NIHSS in the RIC group, median NIHSS 1 [0.5-5] versus 3 [2-9.5], p=0.04; RIC augmented plasma heat shock protein (HSP) 27 (
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