bluuebunny/crossref_metadata_2025 huggingface dataset:
EXPLOITATION OF DIGITAL SURFACE MODELS GENERATED FROM WORLDVIEW-2 DATA FOR SAR SIMULATION TECHNIQUES
Authors: Ilehag R. , Auer S. , d’Angelo P.
Published: June 2017

Abstract. GeoRaySAR, an automated SAR simulator developed at DLR, identifies buildings in high resolution SAR data by utilizing geometric knowledge extracted from digital surface models (DSMs). Hitherto, the simulator has utilized DSMs generated from LiDAR data from airborne sensors with pre-filtered vegetation. Discarding the need for pre-optimized model input, DSMs generated from high resolution optical data (acquired with WorldView-2) are used for the extraction of building-related SAR image parts in this work. An automatic preprocessing of the DSMs has been developed for separating buildings from elevated vegetation (trees, bushes) and reducing the noise level. Based on that, automated simulations are triggered considering the properties of real SAR images. Locations in three cities, Munich, London and Istanbul, were chosen as study areas to determine advantages and limitations related to WorldView-2 DSMs as input for GeoRaySAR. Beyond, the impact of the quality of the DSM in terms of building extraction is evaluated as well as evaluation of building DSM, a DSM only containing buildings. The results indicate that building extents can be detected with DSMs from optical satellite data with various success, dependent on the quality of the DSM as well as on the SAR imaging perspective.
VERIFICATION OF THE SENTINEL-4 FOCAL PLANE SUBSYSTEM
Authors: Williges C. , Hohn R. , Rossmann H. , Hilbert S. , Uhlig M. , Buchwinkler K. , Reulke R.
Published: June 2017

Abstract. The Sentinel-4 payload is a multi-spectral camera system which is designed to monitor atmospheric conditions over Europe. The German Aerospace Center (DLR) in Berlin, Germany conducted the verification campaign of the Focal Plane Subsystem (FPS) on behalf of Airbus Defense and Space GmbH, Ottobrunn, Germany. The FPS consists, inter alia, of two Focal Plane Assemblies (FPAs), one for the UV-VIS spectral range (305 nm … 500 nm), the second for NIR (750 nm … 775 nm). In this publication, we will present in detail the opto-mechanical laboratory set-up of the verification campaign of the Sentinel-4 Qualification Model (QM) which will also be used for the upcoming Flight Model (FM) verification. The test campaign consists mainly of radiometric tests performed with an integrating sphere as homogenous light source. The FPAs have mainly to be operated at 215 K ± 5 K, making it necessary to exploit a thermal vacuum chamber (TVC) for the test accomplishment. This publication focuses on the challenge to remotely illuminate both Sentinel-4 detectors as well as a reference detector homogeneously over a distance of approximately 1 m from outside the TVC. Furthermore selected test analyses and results will be presented, showing that the Sentinel-4 FPS meets specifications.
THE EFFECT OF IMAGE ENHANCEMENT METHODS DURING FEATURE DETECTION AND MATCHING OF THERMAL IMAGES
Authors: Akcay O. , Avsar E. O.
Published: June 2017

Abstract. A successful image matching is essential to provide an automatic photogrammetric process accurately. Feature detection, extraction and matching algorithms have performed on the high resolution images perfectly. However, images of cameras, which are equipped with low-resolution thermal sensors are problematic with the current algorithms. In this paper, some digital image processing techniques were applied to the low-resolution images taken with Optris PI 450 382 x 288 pixel optical resolution lightweight thermal camera to increase extraction and matching performance. Image enhancement methods that adjust low quality digital thermal images, were used to produce more suitable images for detection and extraction. Three main digital image process techniques: histogram equalization, high pass and low pass filters were considered to increase the signal-to-noise ratio, sharpen image, remove noise, respectively. Later on, the pre-processed images were evaluated using current image detection and feature extraction methods Maximally Stable Extremal Regions (MSER) and Speeded Up Robust Features (SURF) algorithms. Obtained results showed that some enhancement methods increased number of extracted features and decreased blunder errors during image matching. Consequently, the effects of different pre-process techniques were compared in the paper.
LANDSAT-8 OPERATIONAL LAND IMAGER CHANGE DETECTION ANALYSIS
Authors: Pervez W. , Khan S. A. , Hussain E. , Amir F. , Maud M. A.
Published: June 2017

Abstract. This paper investigated the potential utility of Landsat-8 Operational Land Imager (OLI) for change detection analysis and mapping application because of its superior technical design to previous Landsat series. The OLI SVM classified data was successfully classified with regard to all six test classes (i.e., bare land, built-up land, mixed trees, bushes, dam water and channel water). OLI support vector machine (SVM) classified data for the four seasons (i.e., spring, autumn, winter, and summer) was used to change detection results of six cases: (1) winter to spring which resulted reduction in dam water mapping and increases of bushes; (2) winter to summer which resulted reduction in dam water mapping and increase of vegetation; (3) winter to autumn which resulted increase in dam water mapping; (4) spring to summer which resulted reduction of vegetation and shallow water; (5) spring to autumn which resulted decrease of vegetation; and (6) summer to autumn which resulted increase of bushes and vegetation . OLI SVM classified data resulted higher overall accuracy and kappa coefficient and thus found suitable for change detection analysis.
ROBUST CYLINDER FITTING IN THREE-DIMENSIONAL POINT CLOUD DATA
Authors: Nurunnabi A. , Sadahiro Y. , Lindenbergh R.
Published: June 2017

Abstract. This paper investigates the problems of cylinder fitting in laser scanning three-dimensional Point Cloud Data (PCD). Most existing methods require full cylinder data, do not study the presence of outliers, and are not statistically robust. But especially mobile laser scanning often has incomplete data, as street poles for example are only scanned from the road. Moreover, existence of outliers is common. Outliers may occur as random or systematic errors, and may be scattered and/or clustered. In this paper, we present a statistically robust cylinder fitting algorithm for PCD that combines Robust Principal Component Analysis (RPCA) with robust regression. Robust principal components as obtained by RPCA allow estimating cylinder directions more accurately, and an existing efficient circle fitting algorithm following robust regression principles, properly fit cylinder. We demonstrate the performance of the proposed method on artificial and real PCD. Results show that the proposed method provides more accurate and robust results: (i) in the presence of noise and high percentage of outliers, (ii) for incomplete as well as complete data, (iii) for small and large number of points, and (iv) for different sizes of radius. On 1000 simulated quarter cylinders of 1m radius with 10% outliers a PCA based method fit cylinders with a radius of on average 3.63 meter (m); the proposed method on the other hand fit cylinders of on average 1.02 m radius. The algorithm has potential in applications such as fitting cylindrical (e.g., light and traffic) poles, diameter at breast height estimation for trees, and building and bridge information modelling.
GEOMETRIC STITCHING METHOD FOR DOUBLE CAMERAS WITH WEAK CONVERGENCE GEOMETRY
Authors: Zhou N. , He H. , Bao Y. , Yue C. , Xing K. , Cao S.
Published: June 2017

Abstract. In this paper, a new geometric stitching method is proposed which utilizes digital elevation model (DEM)-aided block adjustment to solve relative orientation parameters for dual-camera with weak convergence geometry. A rational function model (RFM) with affine transformation is chosen as the relative orientation model. To deal with the weak geometry, a reference DEM is used in this method as an additional constraint in the block adjustment, which only calculates the planimetry coordinates of tie points (TPs). After that we can use the obtained affine transform coefficients to generate virtual grid, and update rational polynomial coefficients (RPCs) to complete the geometric stitching. Our proposed method was tested on GaoFen-2(GF-2) dual-camera panchromatic (PAN) images. The test results show that the proposed method can achieve an accuracy of better than 0.5 pixel in planimetry and have a seamless visual effect. For regions with small relief, when global DEM with 1 km grid, SRTM with 90 m grid and ASTER GDEM V2 with 30 m grid replaced DEM with 1m grid as elevation constraint， it is almost no loss of accuracy. The test results proved the effectiveness and feasibility of the stitching method.
TOWARDS THE OPTIMAL PIXEL SIZE OF DEM FOR AUTOMATIC MAPPING OF LANDSLIDE AREAS
Authors: Pawłuszek K. , Borkowski A. , Tarolli P.
Published: June 2017

Abstract. Determining appropriate spatial resolution of digital elevation model (DEM) is a key step for effective landslide analysis based on remote sensing data. Several studies demonstrated that choosing the finest DEM resolution is not always the best solution. Various DEM resolutions can be applicable for diverse landslide applications. Thus, this study aims to assess the influence of special resolution on automatic landslide mapping. Pixel-based approach using parametric and non-parametric classification methods, namely feed forward neural network (FFNN) and maximum likelihood classification (ML), were applied in this study. Additionally, this allowed to determine the impact of used classification method for selection of DEM resolution. Landslide affected areas were mapped based on four DEMs generated at 1 m, 2 m, 5 m and 10 m spatial resolution from airborne laser scanning (ALS) data. The performance of the landslide mapping was then evaluated by applying landslide inventory map and computation of confusion matrix. The results of this study suggests that the finest scale of DEM is not always the best fit, however working at 1 m DEM resolution on micro-topography scale, can show different results. The best performance was found at 5 m DEM-resolution for FFNN and 1 m DEM resolution for results. The best performance was found to be using 5 m DEM-resolution for FFNN and 1 m DEM resolution for ML classification.
ON THE DESIGN OF HIGH RESOLUTION IMAGING SYSTEMS
Authors: Eckardt A. , Reulke R.
Published: June 2017

Abstract. The design of high-resolution systems is always a consideration of many parameters. Technological parameter of the imaging system, e.g. diameter of the imaging system, mass and power, as well as storage and data transfer, have an direct impact on spacecraft size and design. The paper describes the essential design parameters for the description of high-resolution systems.
Automated local line rolling forming and simplified deformation simulation method for complex curvature plate of ships
Authors: Zhao Yao , Hu Changcheng , Dong Hongbao , Yuan Hua
Published: June 2017

Abstract. Local line rolling forming is a common forming approach for the complex curvature plate of ships. However, the processing mode based on artificial experience is still applied at present, because it is difficult to integrally determine relational data for the forming shape, processing path, and process parameters used to drive automation equipment. Numerical simulation is currently the major approach for generating such complex relational data. Therefore, a highly precise and effective numerical computation method becomes crucial in the development of the automated local line rolling forming system for producing complex curvature plates used in ships. In this study, a three-dimensional elastoplastic finite element method was first employed to perform numerical computations for local line rolling forming, and the corresponding deformation and strain distribution features were acquired. In addition, according to the characteristics of strain distributions, a simplified deformation simulation method, based on the deformation obtained by applying strain was presented. Compared to the results of the three-dimensional elastoplastic finite element method, this simplified deformation simulation method was verified to provide high computational accuracy, and this could result in a substantial reduction in calculation time. Thus, the application of the simplified deformation simulation method was further explored in the case of multiple rolling loading paths. Moreover, it was also utilized to calculate the local line rolling forming for the typical complex curvature plate of ships. Research findings indicated that the simplified deformation simulation method was an effective tool for rapidly obtaining relationships between the forming shape, processing path, and process parameters.
Multilayer Microstructure of Idiopathic Epiretinal Macular Membranes
Authors: Azzolini Claudio , Congiu Terenzio , Donati Simone , Passi Alberto , Basso Petra , Piantanida Eliana , Mariotti Cesare , Testa Francesco , Caprani Simona M. , Cattaneo Jennifer , Vinciguerra Riccardo
Published: June 2017

Purpose

To identify the ultramicroscopic structure of idiopathic epiretinal macular membranes (iEMMs) by scanning electron microscopy (SEM).

Methods

We examined 28 iEMMs surgically removed from 28 eyes of 28 patients. All specimens, previously observed at stereomicroscope, were treated with an osmium maceration technique. Fine resolution of iEMMs’ 3D architecture and their interaction with the retina were studied using a Philips SEM-FEG XL-30 microscope.

Results

The specimens appeared as laminar connective structures partially or completely adherent to the inner limiting membrane (ILM). We identified 4 types of structures: ( 1 ) distinct layers of thin sheets of woven fibers; ( 2 ) folded layers of inhomogeneous thickness of fibrous material more consistent; ( 3 ) thicker and more rigid layers recognizable as collagen fibrils with typical 64-nm period, collagen fibrils isolated or intermingled between them; ( 4 ) lacunar structures with inflammatory and/or necrotic material. The first 3 types of structures appear to thicken towards a centripetal direction from the ILM to the vitreous in order from 1 to 3. The interface of ILM-iEMM tissue shows particular small bridges of connection. Cells are rarely found, especially in the tissue near the ILM.

Conclusions

Layers of various materials follow one another in iEMMs. Cells are rarely found. The interface ILM-iEMM tissue shows particular small bridges of connection. The dynamic modeling of bended layers begins in soft tissue.
Iris reconstruction using artificial iris prosthesis for management of aniridia
Authors: Mostafa Yehia S. , Osman Amr A. , Hassanein Dina H. , Zeid Ashraf M. , Sherif Ahmed M.
Published: June 2017

Purpose:

To discuss the limitations and benefits of the BrightOcular prosthetic artificial iris device in management of aniridia associated with aphakia or cataract.

Methods:

This is a retrospective study including 5 eyes of 4 patients who underwent implantation of the BrightOcular iris prosthesis (Stellar Devices) for total or partial aniridia. The cases included 2 eyes of 1 patient with congenital aniridia associated with congenital cataract and 3 eyes with traumatic aniridia: 1 with subluxated cataractous lens and 2 with aphakia. In all cases, the iris prosthesis was implanted after a 3-piece acrylic intraocular lens was implanted. We evaluated the clinical course with a minimum follow-up period of 6 months, the intraoperative and postoperative complications, and the cosmetic satisfaction of patients.

Results:

All patients had improved uncorrected distance visual acuity and best-corrected distance visual acuity. All patients had a transient corneal edema that resolved within the first postoperative week. Only the patient with congenital aniridia had a permanent increase in intraocular pressure and developed a band keratopathy throughout a 2-year follow-up period. The prosthesis was well-centered in all eyes except for one case that required scleral suture fixation after 3 months. All patients had a satisfactory cosmetic appearance.

Conclusions:

BrightOcular iris prosthesis is a safe and useful tool to correct aniridia associated with pseudophakia or aphakia. Being foldable, it is easy to be implanted through a small incision and placed in the ciliary sulcus without sutures when properly sized. Cosmetic results are satisfactory. Sizing methods should be improved.
Evaluation of Color Changes of Dental Luting Materials in Food Colorant Solutions
Authors: Akay Canan , Taniş Merve Ç.
Published: June 2017

Background

The purpose of this study was to compare the color stability and water absorption of 3 commercially available resin cements in vitro by storing them in 0.15% erythrosine, dark brown and sunset yellow for 30 days.

Methods

2 self-adhesive resin cements and 1 dual/light curing, resin-based dental luting material were evaluated (total 120 samples). The CIE L, a, b of 10 mm diameter-2.0 mm height disk shaped samples was measured using a spectrophotometer for color stability on a white background, 10 mm diameter-1.0 mm height disk shaped samples were measured for water absorption before and after storage in food colorant solutions.

Results

The self-adhesive resin cement-sunset yellow group caused the most severe discoloration (27.89 ± 3.64) that is clinically unacceptable. The lowest discoloration was seen in the self-adhesive resin cement control group (3.35 ± 1.13). The highest water absorption was observed in the self-adhesive resin cement-dark brown group (2.41 ± 0.60) and the lowest water absorption in the dental luting material-control group (0.65 ± 0.17).

Conclusions:

Storage food colorant solutions affected the color stability and water absorption of different resin cement materials.
Development of a Prolonged Warm Ex Vivo Perfusion Model for Kidneys Donated after Cardiac Death
Authors: Urcuyo Daniel , Blum Matthew F. , Liu Qiang , Nassar Ahmed , Buccini Laura D. , Uso Teresa Diago , Poggio Emilio D. , Baldwin William M. , Goldfarb David A. , Quintini Cristiano
Published: June 2017

Purpose

Ex vivo perfusion of marginal kidney grafts offers the chance to expand the donor pool, but there is no current clinical standard for the prolonged warm perfusion of renal grafts. This exploratory pilot study seeks to identify a stable ex vivo kidney perfusion model that can support low intravascular resistance and preserve histologic architecture in a porcine donation after cardiac death (DCD) model.

Methods

15 kidneys were preserved in 1 of 3 settings: normothermic whole blood (NT-WB), normothermic Steen Solution™ (XVIVO Perfusion) with whole blood (NT-Steen/WB), or subnormothermic Steen Solution™ at 21°C (SNT-Steen). Kidneys were primarily assessed using hemodynamic parameters and histologic analysis.

Results

NT-WB perfusion resulted in high vascular resistance and glomerular necrosis. NT-Steen/WB and SNT-Steen resistance ranged between 0.18–0.45 mmHg/mL per minute and 0.25–0.53 mmHg/mL per minute, respectively, enabling stable perfusion for up to 24 hours. NT-Steen/WB demonstrated tubular and glomerular necrosis, while the histologic architecture of SNT-Steen was preserved with the exception of numerous proteinaceous casts.

Conclusions

Our results suggest that ex vivo kidney perfusion with Steen Solution™ at 21°C supports low and stable vascular resistance and provides adequate histologic preservation during 24-hour perfusion.
A New Approach Combining Venoarterial Extracorporeal Membrane Oxygenation and CRRT for Adults: A Retrospective Study
Authors: Zhou Xing-Liang , Chen Yan-He , Wang Qing-Yun
Published: June 2017

Purpose

This study aimed to assess a new approach combining venoarterial (VA) extracorporeal membrane oxygenation (ECMO) and continuous renal replacement therapy (CRRT) in adults, while monitoring CRRT circuit pressures.

Methods

The inlet and outlet of the CRRT circuit were connected to preoxygenator port and postoxygenator port, respectively. Then, complications and CRRT circuit pressures were evaluated.

Results

7 patients underwent combined VA-ECMO and CRRT; 16 filters were used. CRRT blood flow ranged from 150 to 200 mL/min; the CRRT to ECMO blood flow ratio was <0.1. The CRRT pressures at treatment initiation were normal. No complications were reported.

Conclusions

This approach combining VA-ECMO and CRRT in adults did not compromise the accuracy of pressure monitoring systems for CRRT circuit function, and caused no complications. Hence, it may be a feasible method for performing combined VA-ECMO and CRRT in adults.
ECMO and Cytokine Removal for Bridging to Surgery in a Patient with Ischemic Ventricular Septal Defect – a Case Report
Authors: Marek Stefanie , Gamper Gunnar , Reining Georg , Bergmann Peter , Mayr Harald , Kliegel Andreas
Published: June 2017

Even in the modern era of percutaneous coronary intervention, postinfarction ventricular septal defect (VSD) remains a serious and often lethal complication. Whether or not immediate surgical repair or delaying surgery a few days aided by intra-aortic counterpulsation provides the optimal strategy remains a matter of debate. An interdisciplinary approach of intensivists and cardiac surgeons in this setting is mandatory. We report the use of veno-arterial extracorporeal membrane oxygenation and extracorporeal blood purification therapy (CytoSorb®) as bridging to surgical closure in a patient with an ischemic VSD leading to protracted cardiogenic shock after posterior myocardial infarction.
Des-Gamma-Carboxy Prothrombin in Hepatocellular Cancer Patients Waiting for Liver Transplant: A Systematic Review and Meta-Analysis
Authors: Lai Quirino , lesari Samuele , Sandri Giovanni Battista Levi , Lerut Jan
Published: June 2017

Background

The use of des-gamma-carboxy prothrombin (DCP) as a predictor of the risk of recurrence of hepatocellular cancer (HCC) after liver transplant (LT) has recently gained interest, especially in view of the recent extension of the eligibility criteria of these patients for LT. The aim of the present study is to look into this important matter based on a systematic review and meta-analysis.

Methods

A systematic literature review about the role of DCP in the specific setting of LT for HCC has been conducted.

Results

Three selected studies, which showed a high rate of homogeneity (I2 = 0.0%), confirmed that the tumor marker DCP is a useful predictive factor, indicating a 5-fold increased risk for HCC recurrence after LT (p<0.001).

Conclusions

The meta-analysis enabled us to underline the importance of DCP in the refinement of the eligibility criteria of HCC patients for LT. This information, based on Japanese studies performed in the setting of living-donor LT only, needs further validation in the Western world both in the setting of post-mortem and living-donor LT.
Meta-Analysis of Prognostic Role of Ki-67 Labeling Index in Gastric Carcinoma
Authors: Pyo Jung-Soo , Kim Nae Yu
Published: June 2017

Background

This meta-analysis aimed to elucidate the prognostic role of the Ki-67 labeling index (LI) in gastric cancer (GC).

Methods

The current study included 3,615 GC patients in 20 eligible studies, and evaluated the prognostic role of Ki-67 LI in GC. Subgroup analysis was conducted based on depth of invasion and cutoff value for high Ki-67 LI.

Results

A high Ki-67 LI correlated significantly with worse survival (hazard ratio [HR] = 1.214, 95% confidence interval [CI], 1.004-1.468). However, there was no significant correlation between high Ki-67 LI and worse survival in advanced GC (HR = 1.252, 95% CI, 0.801-1.956). The subgroup with cutoff value ≤25% showed a significant correlation with worse survival, but this was not seen in the subgroup with cutoff >25% (HR = 1.433, 95% CI, 1.094-1.876 vs. HR = 1.005, 95% CI, 0.801-1.262). In addition, in the 10% < Ki-67 LI ≤ 20% range, there was a significant correlation between high Ki-67 LI and worse overall survival (HR = 1.931, 95% CI, 1.013-3.310).

Conclusions

A high Ki-67 LI correlated significantly with a worse prognosis in GC patients. Further cumulative studies for the optimal cutoff value for high Ki-67 LI are needed before application in clinical practice.
Acellular Dermal Matrix and Heel Reconstruction: A New Prospective
Authors: Scalise Alessandro , Torresetti Matteo , Verdini Federica , Capecci Marianna , Andrenelli Elisa , Mengarelli Alessandro , Ceravolo Maria Gabriella , Fioretti Sandro , Di Benedetto Giovanni
Published: June 2017

Background

Heel reconstruction represents a challenge for all plastic surgeons due to the anatomical and functional features of this weight-bearing area. In the last decade a combined use of acellular dermal matrices and skin grafts has been proposed as a reliable and less invasive alternative for complex wound management; nevertheless only a few cases have been reported in the literature.

Methods

We describe the long-term outcome of 2 cases of severe degloving trauma of the plantar region with massive soft tissue defects of the foot, that underwent surgical reconstruction with artificial dermis and skin grafts. At the fifth year of follow-up, both patients underwent a clinical and a computerized gait analysis to study their functional outcomes and the kinematics of their gait.

Results

Both patients recovered functional ambulation and returned to their own work and vocational activities, showing a symmetric gait and parameters of upright posture fully comparable to normality.

Conclusions

Despite the initial concerns about the use of acellular dermal matrices and skin grafts for this kind of injury, they seem to be a simple and safe alternative for weight-bearing reconstruction of the degloved foot. The authors believe that the current study yields useful information and reassurance about their long-term reliability.
Effect of Storage Medium and Aging Duration on Mechanical Properties of Self-Adhesive Resin-Based Cements
Authors: Liebermann Anja , Ilie Nicoleta , Roos Malgorzata , Stawarczyk Bogna
Published: June 2017

Background

The aim of this study was to investigate the effects of storage medium and aging duration on Martens hardness (HM) and indentation modulus (EIT) of self-adhesive resin-based cements (SARCs).

Methods

A total of 416 discs were fabricated from 8 SARCs (n = 52 per SARC): (i) BeautyCem (BEA), (ii) Bifix SE (BIF), (iii) Clearfil SA Cement Automix (CLE), (iv) RelyX Unicem2 Automix (RXU), (v) SeT (SET), (vi) SmartCem 2 (SMC), (vii) SoloCem (SOC) and (viii) SpeedCEM (SPC). The specimens were ground and stored in (a) physiological saliva, (b) artificial saliva, (c) sodium chloride and (d) distilled water, at 37°C for 1, 7, 14, 28, 90 and 180 days. Non-aged specimens (3 hours after photo-initiation) of each SARC acted as control groups. HM and EIT were assessed using a universal hardness testing machine. Data were analyzed using Kolmogorov-Smirnov and Kruskal-Wallis tests and paired t-test, and 3-, 2- and 1-way ANOVA with post hoc Scheffé test (p<0.05).

Results

SARC materials exerted the highest influence on HM and EIT values (p<0.001, partial eta squared [ηP²] = 0.753 and 0.433, respectively), closely followed by aging duration (p<0.001, ηP² = 0.516 and 0.255) and storage medium (p<0.001, ηP² = 0.043 and 0.033). The interaction effect of the combinations of the 3 independent parameters was also significant (p<0.001, ηP² = 0.163 and 0.133). The lowest initial HM and EIT was presented by CLE, followed by SET and SPC; highest HM was for BIF, followed by RXU and SMC. SET gave a greater HM and EIT percentage decrease than SOC, SPC, BEA, SMC, RXU or CLE.

Conclusions

Aging duration is a major factor affecting the micromechanical properties of SARCs, while storage medium was shown to have a significant but minor role.
Multicentre Experience with ZSI 375 Artificial Urinary Sphincter for the Treatment of Stress Urinary Incontinence in Men
Authors: Ostrowski Ireneusz , Blewniewski Mariusz , Neugart Frank , von Heyden Burkhard , Selvaggio Oscar , Iori Francesco , Foley Steeve , Fernández Arjona Manuel , Carvajal Obando Alejandro , Pottek Tobias
Published: June 2017

Objectives

The aim of this study was to evaluate the safety and efficacy of the artificial urinary sphincter ZSI 375 device in male patients with stress urinary incontinence (SUI) at 10 centres.

Methods

This was a retrospective, nonrandomised, multicentre study. From January 2012 to December 2014, and follow-up to February 2016, men with SUI were treated with the ZSI 375 device. The primary outcome was continence. The secondary outcome was complications rate.

Results

A total of 147 patients with moderate-to-severe stress incontinence and mean age of 70.67 (26-85) years underwent implantation of the ZSI 375 device at 10 centres. The most common indication for placement was incontinence after radical prostatectomy (121 patients: 82.31%). The ZSI 375 device was considered successful in 86.40% of cases after 12 months follow-up, 83.52% after 24 months follow-up and 78.26% after 36 months follow-up. The infection rate was 6.12%, urethral erosion was 12.92% and mechanical failure was limited to 3.40% leading to ZSI 375 improvement.

Conclusions

This study confirmed safety and efficacy of ZSI 375 device to treat moderate-to-severe SUI in men.
Intention to leave among health care professionals: The importance of working conditions and social capital
Authors: Strömgren Marcus
Published: June 2017

Hospitals in Sweden are redesigning their care processes to increase efficiency. However, related to these changes, there is a risk of increased staff intention to leave and turnover due to increased workload and work pace. The literature on work engagement and job demands and resources suggests that specific job resources can buffer negative effects; i.e., intention to leave because of job demands. Social capital is suggested to have the potential to be a resource associated with staff intention to leave. The aim of this study was to investigate the associations between social capital and intention to leave and to test if social capital moderates the relationship between job demands and intention to leave. A sample of five hospitals working under conditions of improvements of care processes were studied using a questionnaire administered to the healthcare clinicians (n = 849). High levels of social capital were associated with low levels of intention to leave. However, the moderating effect of social capital was not confirmed. Intention to leave among occupational groups was influenced differently by social capital, other job resources, and job demands.
Fitness Landscape and Tax Planning: NK Model for Fiscal Federalism
Authors: Faggini Marisa , Parziale Anna
Published: June 2017

This paper rises from the idea to highlight how traditional models of Fiscal Federalism are not be able to capture adequately the behavioral dynamics of economic systems. We stress the innovative aspects of complexity theory and the premises on which to base the analysis of Fiscal Federalism in this perspective. For this purpose, we consider Fiscal Federalism as a network of economic relationships between different complex adaptive and co-evolving systems, the jurisdictions, linked by strong interdependencies. We will proceed to model a landscape in which co-evolving jurisdictions have to find the optimal path to organize the local tax planning and to optimize their local economy.
A Canvas of Data & Indian Card Industry
Authors: Ghosh Shounak , Koley Tapomoy
Published: June 2017

Indian card industry has gone through several interesting changes in the recent past. We wanted to explore this fascinating world both from card issuing and merchant acquiring perspective within our chosen study period of around 6 years - from Q2, 2011 to Q4, 2016. However rather than hunting the data to prove any pre-defined notion we wanted to listen to the data to capture the story it wants to tell us. We took a canvas of raw primary data from a no. of sources ranging from Reserve Bank of India to World Bank, from Ministry of Finance to Ministry of Statistics & Implementation (of Govt. of India) and a no. of other sources like Yahoo Finance, Index Mundi data portal. As a choice of tool we have used R (an open source software) and Excel for our study. In order to uncover the underlying story behind the data we have used an array of techniques ranging from descriptive trend chart, heat map, multidimensional bubble plot, outlier chart to advanced data analytics techniques like clustering using machine learning algorithm. We also uncovered the correlations of card industry parameters with other economic and social indicators and went ahead in building optimum casual predictive model as well as time series forecasting model.
Determinants of the Regional Role of Qatar
Authors: Al-Maatouk Nouf Saud , Kama Mohamed
Published: June 2017

Aim: The present study aims to demonstrate the passive and active impact for the regional role of Qatar which played heavily on the Middle East countries through the limitations and capabilities possessed by the performance of this regional role towards the countries of the region's issues that could be detrimental to the strategic interests. Methodology: The researcher fellowed a descriptive analytical methodology for description and analysis of a scientific phenomenon of Qatar's role on the Middle East countries through the limitations and capabilities possessed by the performance of this regional role towards the countries of the region's issues that could be detrimental to the strategic interests. Results: The current study has revealed 3 main points: 1st The national policy regional and international roles selectors are not in accordance with the standards of the international force generally accepted in the political and strategic doctrine, 2nd The Consequent obligations calculated in the framework of the competition between the major powers, but according to the size of the state in terms of the location, population and limited capabilities in the regional competition and 3rd was that Physical force, and political statesmanship can be substituted in the diplomatic game management, all the way to the strategic goals and the task of maintaining the state and its political system that burgles them, not by the big powers, but by competing regional powers to dominate the region. Conclusion: Qatar plays a key role in the Middle East region. This role mainly connected to the size of determinants, elements, and potentials, which constitute the elements of the State of Qatar's power. The size of the impact of the State's role could be expected, according to the tasks have been undertaken by the State, which depend on the potentials of the state.
De flexibele onderneming: een kwestie van competitie én imitatie
Authors: Dekker Fabian
Published: June 2017

The flexible firm: A matter of competitive and institutional pressures

In recent decades, the Dutch labour market has become more flexible. Flexible labour contracts enable firms to adjust employment to a changing market environment and to competitive pressures. Almost without exception, academic studies on the drivers behind the use of flexible labour contracts at the company level, are motivated by competitive pressures. However, companies may be susceptible to institutional pressures as well. Based on a survey among more than 650 managers in the Netherlands, we conclude that firms are vulnerable to institutional (mimetic) forces. This finding has several implications for policy-making and labour flexibility research.
Deliberatieve democratie: ervaringen met diversiteit in burgertop Amsterdam
Authors: Smets Peer , Vlind Marloes
Published: June 2017

Deliberative democracy: experiences with diversity in a citizens’ summit in Amsterdam

This paper will show how citizens’ summits in the Netherlands cope with diversity of participants and the impact of this on those initiatives. This provides insight in why diversity is hard to reach and what can be done to improve it. Presently, dissatisfaction about the Dutch democratic system is widespread. Solutions are being sought to strengthen Dutch participatory democracy. For this objective, citizens’ summits develop different kind of initiatives. However, citizens participating in these summits are a homogeneous group, namely mainly white, middle aged and highly educated. Mechanisms of exclusion, selection of candidates, homogeneous composition of the organization, and a dominating intellectual/rational way of debating are playing a role here. Citizens with different backgrounds need to be included in these initiatives to obtain a better representation of society’s voices. This notion has been strengthened by theory, which shows that diversity enables more creativity and innovation.
Leucemia Mieloide Aguda (LMA): as condições psicológicas do paciente adulto
Authors: Nascimento Carlos Alberto Domingues , Cartaxo Charmênia Maria Braga , Lopes Katiuscia Araújo de Miranda , Bushatsky Magaly , Batista Alexciana Farias
Published: June 2017

Este estudo objetivou caracterizar a condição psicológica, vivenciada por pacientes adultos em relação à Leucemia Mieloide Aguda (LMA). Para tanto, utilizou-se uma investigação qualitativa, de natureza descritiva e exploratória, da qual, segundo o critério de saturação do conteúdo, participaram 16 mulheres atendidas num serviço de referência da cidade do Recife-PE, em 2012. Os dados evidenciaram um conhecimento correto e errôneo, baseado, respectivamente, em informações do senso comum e científico. Mostraram, ainda, que os pacientes, ao receberem o diagnóstico, podem apresentar uma condição de desajustamento emocional, por exemplo, recorrendo à negação, todavia, durante o tratamento, é possível que evoluam para uma condição de ajustamento emocional. Permitiu, ainda, observar que o adoecimento induz ao desenvolvimento de atitudes positivas para o estilo e a qualidade de vida. Os dados reforçam a necessidade de que os profissionais de saúde, contrapondo-se a uma perspectiva biomédica, assistam o paciente e seus familiares de forma humanizada.
A new minute species of Pristimantis (Amphibia: Anura: Craugastoridae) with a large head from the Yanachaga-Chemillén National Park in central Peru, with comments on the phylogenetic diversity of Pristimantis occurring in the Cordillera Yanachaga
Authors: Lehr Edgar , Moravec Jiří , Cusi Juan Carlos , Gvoždík Václav
Published: June 2017

We describe a new minute species of the genus Pristimantis, P. boucephalus sp. nov., from the Yanachaga-Chemillén National Park, Región Pasco, Peru. The description is based on a freshly collected male specimen found at 2950 m a.s.l. in a cloud forest and four previously unidentified museum specimens consisting of two adult males, one subadult female and a juvenile from the Yanachaga-Chemillén National Park. The new species is mainly characterized by a snout–vent length of 13.4–14.5 mm in adult males (n = 3), and 12.5 mm in the only known subadult female, and is compared morphologically and genetically with other taxonomically and biogeographically relevant species of Pristimantis. The new species is characterized by its small size, disproportionally large head with short snout, absence of a tympanic annulus and membrane, and reddish-copper iris. Phylogenetically it belongs to a speciose clade, an as yet unnamed species group, comprising both montane (Andes, Guiana Shield) and lowland (Amazon) taxa from the northern part of South America. The new species is genetically close to the sympatric P. cruciocularis. Species of Pristimantis occurring in the Cordillera Yanachaga region in the Andes of central Peru are members of six divergent phylogenetic lineages.
Surgical treatment of Schwannoma in lower lip
Authors: Melzer Rafaela Savio , Ferreira Vitor Hugo Candido , Parise Guilherme Klein , Schussel Juliana Lucena , Sassi Laurindo Moacir
Published: June 2017

Introduction: Of unknown aetiology, the schwannoma is a benign tumor that originates from the Schwann cells of the peripheral nerves. Around 25% to 45% of these tumors affect the head and neck region and are rare when affect the oral cavity. Presents itself as a lump of smooth surface, soft consistency and sessile. Histologically presents two standards, being the first known as Antoni A and the second, called Antoni B. Objective: To present a case of schwannoma in lower lip. Case report: Male patient sought specialized care of a maxillofacial surgeon due to volume increase painless in lower lip. An incisional biopsy was performed and the diagnosis was of schwannoma. The lesion was removed in your entirety, the patient is well and no signs of recurrence. Conclusion: The schwannomas occur infrequently in head and neck region, and it is rare when the lip is the site of involvement. The treatment of choice is surgical excision.
Synchronized HIV assembly by tunable PIP2 changes reveals PIP2 requirement for stable Gag anchoring
Authors: Mücksch Frauke , Laketa Vibor , Müller Barbara , Schultz Carsten , Kräusslich Hans-Georg
Published: June 2017

HIV-1 assembles at the plasma membrane (PM) of infected cells. PM association of the main structural protein Gag depends on its myristoylated MA domain and PM PI(4,5)P2. Using a novel chemical biology tool that allows rapidly tunable manipulation of PI(4,5)P2 levels in living cells, we show that depletion of PI(4,5)P2 completely prevents Gag PM targeting and assembly site formation. Unexpectedly, PI(4,5)P2 depletion also caused loss of pre-assembled Gag lattices from the PM. Subsequent restoration of PM PI(4,5)P2 reinduced assembly site formation even in the absence of new protein synthesis, indicating that the dissociated Gag molecules remained assembly competent. These results reveal an important role of PI(4,5)P2 for HIV-1 morphogenesis beyond Gag recruitment to the PM and suggest a dynamic equilibrium of Gag-lipid interactions. Furthermore, they establish an experimental system that permits synchronized induction of HIV-1 assembly leading to induced production of infectious virions by targeted modulation of Gag PM targeting.
A gut response
Authors: Nicotra Matthew L
Published: June 2017

Unexpected findings from the immune system of sea urchin larvae potentially provide insights into immune signaling in ancestral animals.
Jobbtilfredshet og livskvalitet blant norske hjemmesykepleiere
Authors: Halvorsrud Liv , Kuburović Jelena , Andenæs Randi
Published: June 2017

Job Satisfaction and Quality of Life among Norwegian Homecare Nurses: a cross-sectional studyThe aim of this cross-sectional study was to investigate job satisfaction and quality of life among homecare nurses. A questionnaire including socio demographic variables, the Job Satisfaction Scale and the World Health Organization Quality of Life measurement was used to assess data (N = 126, mean age 39 years, 78 percent were women). The study showed moderate overall job satisfaction among homecare nurses. Satisfaction with colleagues had the highest item score in job satisfaction. Moderate satisfaction was displayed for the following items; responsibility you are given, variation on work, your opportunities to use your skills, freedom to choose your own methods of working, your physical working conditions, your work hours, and recognition you get for good achievements. Overall quality of life as well as the domains; physical, psychological, social relations and environment, showed high scores. Job satisfaction was significantly associated with both physical and environment domain of quality of life.
Effect of Tele-ICU on Clinical Outcomes of Critically Ill Patients
Authors: Pereira Adriano J. , Noritomi Danilo T. , dos Santos Maura Cristina , Corrêa Thiago D. , Ferraz Leonardo J. R. , Schettino Guilherme P. P. , Cordioli Eduardo , Morbeck Renata A. , Morais Lúbia C. , Salluh Jorge I. F. , Azevedo Luciano C. P. , Biondi Rodrigo S. , Rosa Regis G. , Cavalcanti Alexandre B. , Berwanger Otavio , Serpa Neto Ary , Ranzani Otavio T.
Published: October 2024

Importance

Despite its implementation in several countries, there has not been a randomized clinical trial to assess whether telemedicine in intensive care units (ICUs) could improve clinical outcomes of critically ill patients.

Objective

To determine whether an intervention comprising daily multidisciplinary rounds and monthly audit and feedback meetings performed by a remote board-certified intensivist reduces ICU length of stay (LOS) compared with usual care.

Design, Setting, and Participants

A parallel cluster randomized clinical trial with a baseline period in 30 general ICUs in Brazil in which daily multidisciplinary rounds performed by board-certified intensivists were not routinely available. All consecutive adult patients (aged ≥18 years) admitted to the participating ICUs, excluding those admitted due to justice-related issues, were enrolled between June 1, 2019, and April 7, 2021, with last follow-up on July 6, 2021.

Intervention

Remote daily multidisciplinary rounds led by a board-certified intensivist through telemedicine, monthly audit and feedback meetings for discussion of ICU performance indicators, and provision of evidence-based clinical protocols.

Main Outcomes and Measures

The primary outcome was ICU LOS at the patient level. Secondary outcomes included ICU efficiency, in-hospital mortality, incidence of central line–associated bloodstream infections, ventilator-associated events, catheter-associated urinary tract infections, ventilator-free days at 28 days, patient-days receiving oral or enteral feeding, patient-days under light sedation, and rate of patients with oxygen saturation values under that of normoxemia, assessed using generalized linear mixed models.

Results

Among 17 024 patients (1794 in the baseline period and 15 230 in the intervention period), the mean (SD) age was 61 (18) years, 44.7% were female, the median (IQR) Sequential Organ Failure Assessment score was 6 (2-9), and 45.5% were invasively mechanically ventilated at admission. The median (IQR) time under intervention was 20 (16-21) months. Mean (SD) ICU LOS, adjusted for baseline assessment, did not differ significantly between the tele–critical care and usual care groups (8.1 [10.0] and 7.1 [9.0] days; percentage change, 8.2% [95% CI, −5.4% to 23.8%]; P = .24). Results were similar in sensitivity analyses and prespecified subgroups. There were no statistically significant differences in any other secondary or exploratory outcomes.

Conclusions and Relevance

Daily multidisciplinary rounds conducted by a board-certified intensivist through telemedicine did not reduce ICU LOS in critically ill adult patients.

Trial Registration

ClinicalTrials.gov Identifier: NCT03920501
Seborrheic Dermatitis
Authors: Patel Tejesh S. , Dalia Yoseph
Published: October 2024

This Patient Page describes the symptoms, diagnosis, and treatment of seborrheic dermatitis.