Estimation of return stock rate by using wavelet and kernel smoothers

This article aim to estimate the Return Stock Rate of the private banking sector, with two banks, by adopting a Partial Linear Model based on the Arbitrage Pricing Model (APT) theory, using Wavelet and Kernel Smoothers. The results have proved that the wavelet method is the best. Also, the results of the market portfolio impact and inflation rate have proved an adversely effectiveness on the rate of return, and direct impact of the money supply

A piecewise-linear reduced-order model of squeeze-film damping for deformable structures including large displacement effects

This paper presents a reduced-order model for the Reynolds equation for deformable structure and large displacements. It is based on the model established in [11] which is piece-wise linearized using two different methods. The advantages and drawbacks of each method are pointed out. The pull-in time of a microswitch is determined and compared to experimental and other simulation data.Comment: Submitted on behalf of EDA Publishing Association (http://irevues.inist.fr/handle/2042/16838

Trapping cold atoms using surface-grown carbon nanotubes

We present a feasibility study for loading cold atomic clouds into magnetic traps created by single-wall carbon nanotubes grown directly onto dielectric surfaces. We show that atoms may be captured for experimentally sustainable nanotube currents, generating trapped clouds whose densities and lifetimes are sufficient to enable detection by simple imaging methods. This opens the way for a novel type of conductor to be used in atomchips, enabling atom trapping at sub-micron distances, with implications for both fundamental studies and for technological applications

Prevalence, Clinical Picture, and Risk Factors of Dry Socket in a Jordanian Dental Teaching Center

Aims: The aims of this study were to determine the prevalence, clinical picture, and risk factors of dry socket at the Dental Teaching Center of Jordan University of Science and Technology (DTC/JUST). Methods and Materials: Two specially designed questionnaires were completed over a four-month period. One questionnaire was completed for every patient who had one or more permanent teeth extracted in the Oral Surgery Clinic. The other questionnaire was completed for every patient who returned for a post-operative visit and was diagnosed with dry socket during the study period. Results: There were 838 dental extractions carried out in 469 patients. The overall prevalence of dry socket was 4.8%. There was no statistically significant association between the development of dry socket and age, sex, medical history, medications taken by the patient, indications for the extraction, extraction site, operator experience, or the amount of local anesthesia and administration technique used. The prevalence of dry socket following non-surgical extractions was 3.2%, while the prevalence following surgical extractions was 20.1% (P< 0.002). The prevalence of dry socket following surgical and non-surgical extractions was significantly higher in smokers (9.1%) than in non-smokers (3%) (P = 0.001), and a direct linear trend was observed between the amount of smoking and the prevalence of dry socket (P = 0.034). The prevalence of dry socket was significantly higher in the single extraction cases (7.3%) than in the multiple extraction cases (3.4%) (P = 0.018). The clinical picture and management of dry socket at DTC/JUST were similar to previous reports in the literature. The prevalence of dry socket, its clinical picture, and management at DTC/JUST are similar to those reported in the literature. Abstract 2 The Journal of Contemporary Dental Practice, Volume 8, No. 3, March 1, 2007 Introduction Dry socket is one of the most common complications of tooth extraction and is characterized by severe pain starting usually on the second or third day postoperatively. Its prevalence has been reported to vary from 0%1 to more than 35%2 and is more common following mandibular third molar extraction. 3-9 Patients experience pain and may experience loss of productivity. This makes the condition costly to both patient and society, as 45% of patients require multiple postoperative visits in the process of managing this painful condition. 10 The exact pathogenesis of dry socket is not well understood. However, disintegration of the blood clot by fibrinolysis remains the most widely accepted theory.11 Several contributing factors have been reported to be associated with an increased risk of dry socket. They include traumatic extraction, 3-4,11 preoperative infection, 11-12 smoking,13 sex, 11,14 site of extraction, 8,14 use of oral contraceptives, 15 use of local anesthetics with vasoconstrictors, 16 inadequate postoperative irrigation, 17 and low level of operator experience. 4,8 Several methods have been advocated to reduce the incidence of dry socket including the use of antiseptic mouthwashes18-20 antifibrinolytic agents, 21 antibiotics, 22-23 steroids, 24 clot supporting agents, 25 and other intra-alveolar dressings and medicaments. 9,27-28 While this condition cannot be completely treated as long as the exact etiology is not firmly established, its management appears to be simple and effective. It usually involves reassurance of the patient, cleaning and irrigation of the affected socket, and insertion of a medicated pack. 2,25,29-30 This is the first study of dry socket at the Dental Teaching Center of Jordan University of Science and Technology (DTC/JUST) and in Jordan . Its aims were to identify the prevalence and risk factors as well as to describe the clinical picture of this painful condition at this Jordanian dental teaching center. Methods and Materials The DTC/JUST was the setting for the study. This center is located in Irbid, in North Jordan, and is involved in the training of undergraduate and postgraduate dental students. It serves the community of the city of Irbid and its neighboring towns and villages, which have a total population of approximately 750,000. This prospective study was totally observational without any interference with any of the clinical procedures normally followed at DTC/JUST. Description of the Sample During the study period, 838 permanent tooth extractions were carried out in 469 patients. There were 225 (48.0%) male patients and 244 (52.0%) female patients. The age of patients Conclusion: Smoking and surgical trauma are associated with an increased incidence of dry socket. Moreover, patients who had single extractions were more likely to develop dry socket than those who had multiple extractions in the same visi

Points of Interest Coverage with Connectivity Constraints using Wireless Mobile Sensors

Part 7: Network Topology ConfigurationInternational audienceThe coverage of Points of Interest (PoI) is a classical requirement in mobile wireless sensor applications. Optimizing the sensors self-deployment over a PoI while maintaining the connectivity between the sensors and the sink is thus a fundamental issue. This article addresses the problem of autonomous deployment o f mobile sensors that need to cover a predefined PoI with a connectivity constraints and provides the solution to it using Relative Neighborhood Graphs (RNG). Our deployment scheme minimizes the number of sensors used for connectivity thus increasing the number of monitoring sensors. Analytical results, simulation results and real implementation are provided to show the efficiency of our algorithm

FIRST experiment: Fragmentation of Ions Relevant for Space and Therapy

Nuclear fragmentation processes are relevant in different fields of basic research and applied physics and are of particular interest for tumor therapy and for space radiation protection applications. The FIRST (Fragmentation of Ions Relevant for Space and Therapy) experiment at SIS accelerator of GSI laboratory in Darmstadt, has been designed for the measurement of different ions fragmentation cross sections at different energies between 100 and 1000 MeV/nucleon. The experiment is performed by an international collaboration made of institutions from Germany, France, Italy and Spain. The experimental apparatus is partly based on an already existing setup made of the ALADIN magnet, the MUSIC IV TPC, the LAND2 neutron detector and the TOFWALL scintillator TOF system, integrated with newly designed detectors in the interaction Region (IR) around the carbon removable target: a scintillator Start Counter, a Beam Monitor drift chamber, a silicon Vertex Detector and a Proton Tagger for detection of light fragments emitted at large angles (KENTROS). The scientific program of the FIRST experiment started on summer 2011 with the study of the 400 MeV/nucleon 12C beam fragmentation on thin (8mm) carbon targe

Application of the Environmental Design Treatments in the Steps of Design Process, in Hot –Dry Climate

Due to the cyclical changes of the climate during the year, it is imperative in the building design process that special consideration and treatments should be taken in order to protect the building from the climatic changes. These treatments should be used in the designing process in order to upgrade the building so that it should be highly efficient in its thermal control and accomplish the desired comfort to the occupants. The multiplicity of the environmental treatments used in design and the wide spectrum of its effect that differ in accordance with the strategic target that was used for, resulted that its somewhat difficult for designer to be adequate by basic knowledge necessary in dealing with these treatments in the design. The research finds conclusion that correlate the environmental design treatments with the thermal control strategies (for hot and cold seasons) and the steps of the design process. These conclusions stressed the importance of having a programmable theoretical order of the environmental design treatments to produce thermally efficient buildings. Keywords: Environmental treatment, The efficiency of thermal performance, Hot-dry climate treatments

Colonic delivery of indometacin loaded PGA-co-PDL microparticles coated with Eudragit L100-55 from fast disintegrating tablets

The aim of this work was to investigate the efficient targeting and delivery of indometacin (IND), as a model anti-inflammatory drug to the colon for treatment of inflammatory bowel disease. We prepared fast disintegrating tablets (FDT) containing IND encapsulated within poly(glycerol-adipate-co-ɷ-pentadecalactone), PGA-co-PDL, microparticles and coated with Eudragit L100-55 at different ratios (1:1.5, 1:1, 1:0.5). Microparticles encapsulated with IND were prepared using an o/w single emulsion solvent evaporation technique and coated with Eudragit L-100-55 via spray drying. The produced coated microparticles (PGA-co-PDL-IND/Eudragit) were formulated into optimised FTD using a single station press. The loading, in vitro release, permeability and transport of IND from PGA-co-PDL-IND/Eudragit microparticles was studied in Caco-2 cell lines. IND was efficiently encapsulated (570.15 ± 4.2 μg/mg) within the PGA-co-PDL microparticles. In vitro release of PGA-co-PDL-IND/Eudragit microparticles (1:1.5) showed significantly (p < 0.05, ANOVA/Tukey) lower release of IND 13.70 ± 1.6 and 56.46 ± 3.8% compared with 1:1 (89.61 ± 2.5, 80.13 ± 2.6%) and 1:0.5 (39.46 ± 0.9 & 43.38 ± 3.12) after 3 and 43 h at pH 5.5 and 6.8, respectively. The permeability and transport studies indicated IND released from PGA-co-PDL-IND/Eudragit microparticles had a lower permeability coefficient of 13.95 ± 0.68 × 10−6cm/s compared to free IND 23.06 ± 3.56 × 10−6cm/s. These results indicate the possibility of targeting anti-inflammatory drugs to the colon using FDTs containing microparticles coated with Eudragit

Feasibility and clinical utility of Bates-Jensen wound assessment tool among nurses caring of patients having pressure ulcers

Aims:&nbsp;One of the vital roles of nurses is to perform pressure ulcer risk assessment that enables them to appropriately assess and track healing progress of wound and pressure ulcers among patients. Our aim was to assess the feasibility and clinical utility of the Bates-Jensen Wound Assessment Tool (BWAT) among nurses caring of patients with pressure ulcer. Methods:&nbsp;A descriptive cross-sectional design used to collect data from 177 registered nurses caring of patients who developed or have a risk of developing pressure ulcers working in three hospitals in Jordan. Results:&nbsp;The mean feasibility score of the BWAT was 28.3 out of 36 (SD=3.4) with a median score of 29. Most of nurses reported that the BWAT was easy to use on a scale of 1-4 (best) (M=3.40/4, SD=0.62) and can successfully assess wound characteristics (M=3.40/4, SD=0.59). The mean utility score of the BWAT was 21.3 out of 28 (SD=2.7) with a median of 21. Nurses had a perception that using the BWAT enhances care of patients with wounds (M=3.36/4, SD=0.61) and makes communication easier between nurses and physicians.&nbsp; Conclusion:&nbsp;This study provided evidence that support the use of the Bates-Jensen Wound Assessment Tool for patients with pressure ulcer. Nurses perceived BWAT as easy to use, understandable, and relevant for assessing patients with pressure ulcers. Funding statement:&nbsp;This work was supported by supported and funded by The Deanship of Scientific Research at The University of Jordan, Amman, Jordan [number1953/2017/19]

Vortical Flow Topology on Windward and Leeward side of Delta Wing at Supersonic Speed

area of interest for flow control due to coherent vortical structures existing on the leeward side of wing. In the present research, a numerical study was carried out by using two different turbulence models at Mach No. 1.6, to identify the influence of turbulence modeling and wing on overall pressure distribution and onset of flow separation. Fully structured multi-block grid was used with the grid refinement near the wall to resolve the vortical flow structures accurately. Different turbulence models used were SA (Spalart-Allmaras) and kω-SST (Shear-stress Transport). An under prediction in pressure distribution was observed by using SA Turbulence model, in comparison with known experimental data at fixed Mach No. The analysis of results presented showed that the height of primary vortex increases by increasing the angle of attack and by keeping the Mach No. as fixed. Moreover, the vortex formation on cambered wing seems less pronounced as compared with that of sharp wing at high angle of attack