Miracle-dz/UniFAR-FTUs huggingface dataset:
Diversity and MIMO Performance Evaluation of Common Phase Center Multi Element Antenna Systems

The diversity and Multiple Input Multiple Output (MIMO) performance provided by common phase center multi element antenna (CPCMEA) systems is evaluated using two practical methods which make use of the realized active element antenna patterns. These patterns include both the impact of the mutual coupling and the mismatch power loss at antenna ports. As a case study, two and four printed Inverted F Antenna (IFA) systems are evaluated by means of Effective Diversity Gain (EDG) and Capacity (C). EDG is measured in terms of the signal-to-noise ratio (SNR) enhancement at a specific outage probability and in terms of the SNR reduction for achieving a desired average bit error rate (BER). The concept of receive antenna selection in MIMO systems is also investigated and the simulation results show a 43% improvement in the 1% outage C of a reconfigurable 2x2 MIMO system over a fixed 2x2 one.
A P2P-Based Incremental Web Ranking Algorithm

In this paper, we propose an incremental algorithm for web ranking in the Peer-to-Peer (P2P) environments. Not the same as the non-incremental algorithm, the proposed algorithm can partition the web link graphs, the graphs represented the connectivity structure among the web pages, into the changed sub graphs, and the unchanged sub graphs. Subsequently, the algorithm processes only the necessary data in order to compute the ranking. The experiments have been conducted to evaluate the efficiency of the algorithm, comparing with the non-incremental algorithm in various P2P environments. We report the efficiency in terms of both computational and communication costs. It has been found that in terms of communication cost, the proposed algorithm can out perform the traditional one in all configurations. For the computational cost, the proposed algorithm can out perform the traditional one in all P2P network sizes but it has slightly higher computational cost when the web link graph size is large.
Performance comparison of four turbulence models for modeling of secondary flow cells in simple trapezoidal channels

Abstract Due to the importance of channel flow characteristics in the water conveyance, the study of it is a noteworthy problem for hydraulics experts and much attempts has been accomplished for the modeling of the flow characteristics. One significant problem in this respect is the secondary flow cells and their effect on flow specifications. Widespread experimental and analytical investigations have been accomplished on this phenomenon. However, researchers are trying to replace the expensive and time-consuming experimental approaches and ad hoc analytical models with numerical simulation procedures using computational fluid dynamics (CFD). Selection of the proper turbulence model is one of the most important problems for this type of the numerical modeling. In the present study, after evaluating several turbulence models including k–ε, shear stress transport (SST) and three versions of the Reynolds stress model (RSM) (i.e. LRR-IP, LRR-QI, and SSG models), for the numerical simulation of the secondary flow cells and their effects on trapezoidal channels flow, the more efficient model was selected. Available experimental data and theoretical model was used to validate the selected turbulence model. The results were validated in terms of the free water surface, depth-averaged velocity, and boundary shear stress. The results confirmed the performance and efficiency of SSG version of the Reynolds stress model for the numerical modeling of the secondary flow cells.
TITLE: Identification and Characterization of Ovarian Carcinoma Peptide Epitopes Recognized by Cytotoxic T Lymphocytes

The TAG-1, TAG-2a, TAG-2b, and TAG-2c cancer/testis genes, known to be expressed in an unusually high percentage of melanoma cell lines, are shown here to be expressed in a variety of tumor lines of diverse histological type including cancers of the brain, breast, colon, lung, ovary, pharynx, and tongue. The genes are also expressed in fresh, uncultured melanoma and ovarian cancer cells. Epitope prediction algorithms were used to identify potential HLA-A1, -A2, -A3, -B7, and -B8 epitopes, and these potential epitopes were tested for their ability to stimulate a peptide-specific cytotoxic T lymphocyte response using lymphocytes from healthy donors. Three candidate epitopes were identified using this approach and included two HLA-A2-restricted epitopes (SLGWLFLLL and LLLRLECNV) and one HLA-B7restricted epitope (LPAQEGAPT). Cytotoxic T lymphocytes specific for each of these peptides were capable of recognizing tumor cells expressing both the corresponding class I major histocompatibility complex encoded molecule and the TAG genes. These results indicate that TAG-derived peptides would be good components of a therapeutic vaccine designed to target melanoma and a variety of epithelial cell-derived malignancies.
Monosynaptic transmission of respiratory drive to phrenic motoneurons from brainstem bulbospinal neurons in rats

The termination patterns in the rat phrenic nucleus of neurons within two respiratory cell groups of the ventrolateral medulla (Bötzinger Complex and the rostral ventral respiratory group) were determined. The plant lectin, Phaseolus vulgaris leuco‐agglutinin, was used as an anterograde tracer to label presynaptic processes of bulbospinal neurons, and horseradish peroxidase was used simultaneously to label phrenic motoneurons. Labeled bulbospinal axons ended with dense terminal arborizations within the phrenic cell column and on radial phrenic motoneuron dendrite bundles, which represented the exclusive site of termination of Bötzinger Complex and rostral ventral respiratory group neurons in the lower cervical spinal cord. Terminals of these descending axons formed presumptive synaptic contacts within longitudinal and radial dendrite bundles, and on the cell somata of phrenic motoneurons.
Cardiopulmonary Resuscitation Quality: Improving Cardiac Resuscitation Outcomes Both Inside and Outside the Hospital A Consensus Statement From the American Heart Association

The "2010 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care" increased the focus on methods to ensure that high-quality cardiopulmonary resuscitation (CPR) is performed in all resuscitation attempts. There are 5 critical components of high-quality CPR: minimize interruptions in chest compressions, provide compressions of adequate rate and depth, avoid leaning between compressions, and avoid excessive ventilation. Although it is clear that high-quality CPR is the primary component in influencing survival from cardiac arrest, there is considerable variation in monitoring, implementation, and quality improvement. As such, CPR quality varies widely between systems and locations. Victims often do not receive high-quality CPR because of provider ambiguity in prioritization of resuscitative efforts during an arrest. This ambiguity also impedes the development of optimal systems of care to increase survival from cardiac arrest. This consensus statement addresses the following key areas of CPR quality for the trained rescuer: metrics of CPR performance; monitoring, feedback, and integration of the patient’s response to CPR; team-level logistics to ensure performance of high-quality CPR; and continuous quality improvement on provider, team, and systems levels. Clear definitions of metrics and methods to consistently deliver and improve the quality of CPR will narrow the gap between resuscitation science and the victims, both in and out of the hospital, and lay the foundation for further improvements in the future.
An approach to improve direct sensor orientation using the integration of photogrammetric and lidar datasets

ABSTRACT The Direct Sensor Georeferencing (DSG) can co-register both photogrammetric and light detection and ranging (lidar) datasets in a common mapping reference system. This procedure is based on the information (position and orientation) derived from Global Navigation Satellite System (GNSS) and Inertial Measurement Unit (IMU) data. Due to inaccurate system mounting parameters, the attitudes and positions are badly calculated. In this scenario, the accuracy of the boresight misalignment angles (physical mounting angles between digital camera and IMU) is critical to obtain models free of y-parallaxes. Therefore, a system calibration procedure is required to improve DSG using photogrammetric and lidar datasets. In this sense, this article aims to develop an approach to improve DSG based on the enhancements of the accuracies of the photogrammetric and lidar datasets integration. For this purpose, one sub-block was extracted at the centre of the entire block. Then, the in situ camera calibration was performed using the sub-block and sets of Lidar Control Points. Sequentially, a boresight calibration was performed using Virtual Lidar Control Points. The quality assessment of the approach was measured in both image and object spaces, using two-ray checkpoints at the entire block. The overall results from the performed experiments showed significant improvements of the Root Mean Square Error of the checkpoint discrepancies computed by direct georeferencing.
Mobile robot positioning: Sensors and techniques

Exact knowledge of the position of a vehicle is a fundamental problem in mobile robot applications. In search for a solution, researchers and engineers have developed a variety of systems, sensors, and techniques for mobile robot positioning. This paper provides a review of relevant mobile robot positioning technologies. The paper defines seven categories for positioning systems: 1. Odometry; 2. Inertial Navigation; 3. Magnetic Compasses; 4. Active Beacons; 5. Global Positioning Systems; 6. Landmark Navigation; and 7. Model Matching. The characteristics of each category are discussed and examples of existing technologies are given for each category. The field of mobile robot navigation is active and vibrant, with more great systems and ideas being developed continuously. For this reason the examples presented in this paper serve only to represent their respective categories, but they do not represent a judgment by the authors. Many ingenious approaches can be found in the literature, although, for reasons of brevity, not all could be cited in this paper. 1) (Corresponding Author) The University of Michigan, Advanced Technologies Lab, 1101 Beal Avenue, Ann Arbor, MI 48109-2110, Ph. : 313-763-1560, Fax: 313-944-1113. Email: johannb@umich.edu 2) Naval Command, Control, and Ocean Surveillance Center, RDT&E Division 5303, 271 Catalina Boulevard, San Diego, CA 92152-5001, Email: Everett@NOSC.MIL 3) The University of Michigan, Advanced Technologies Lab, 1101 Beal Avenue, Ann Arbor, MI 481092110, Email: Feng@engin.umich.edu 4) The University of Michigan, Dept. of Nuclear Engineering and Radiological Sciences, 239 Cooley Bldg. , Ann Arbor, MI 48109, Email: dkw@umich.edu Report Documentation Page Form Approved OMB No. 0704-0188 Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number.
Fifteen years of GSS in the field: a comparison across time and national boundaries

It has been over two decades since group support systems (GSS) emerged on the information technology (IT) scene. GSS have now been commercialized and are present in an increasing number of domestic and international contexts but only lightly studied in real organizational settings. A criticism of studies has been that many of the organizations involved had a vested interest in the outcome that extended beyond that which would normally occur in a typical organization. An additional challenge has been made with respect to the generalizability of field study results across corporate and national cultures. This paper compares and contrasts findings from International Business Machines (IBM) and Boeing Aircraft Corporation in the US with those from two European companies: Nationale-Nederlanden (NN), the largest insurance firm in the Netherlands and European Aeronautic Defense and Space company, Military division (EADS-M). Attention is given to aspects of efficiency, effectiveness, and user satisfaction as well as group dynamics.
Personalized Education; Solving a Group Formation and Scheduling Problem for Educational Content

Wether teaching in a classroom or a Massive Online Open Course it is crucial to present the material in a way that benefits the audience as a whole. We identify two important tasks to solve towards this objective; (1.) group students so that they can maximally benefit from peer interaction and (2.) find an optimal schedule of the educational material for each group. Thus, in this paper we solve the problem of team formation and content scheduling for education. Given a time frame d, a set of students S with their required need to learn different activities T and given k as the number of desired groups, we study the problem of finding k group of students. The goal is to teach students within time frame d such that their potential for learning is maximized and find the best schedule for each group. We show this problem to be NP-hard and develop a polynomial algorithm for it. We show our algorithm to be effective both on synthetic as well as a real data set. For our experiments we use real data on students’ grades in a Computer Science department. As part of our contribution we release a semi-synthetic dataset that mimics the properties of the real data.
ADSORPTION MODELS FOR TREATMENT OF EXPERIMENTAL DATA ON REMOVAL FLUORINE FROM WATER BY OXIHYDROXIDESOF ALUMINUM

The adsorption of fluorine ions from aqueous solutions by oxihydroxides of aluminum was studied. The equilibrium sorption was explained by using the Lengmuire, Freundlich, Bet and Redlich-Peterson models of isotherms. The results obtained allow one to conclude that the mathematical model of adsorption Freundlich is the best for describing the measured experimental data, which testifies to the heterogeneity of the surface. The parameters of all equations of adsorption were calculated.
Visual Hallucinations and Cognitive Impairment in Parkinson's Disease

Abstract: Background: Visual hallucination (VH) is a common psychotic symptom in patients with Parkinson's disease (PD) and may be a significant predictor of cognitive impairment (CI) in such patients. Objective: This study aimed to investigate the pattern of glucose metabolism of VH and the relationship between VH and CI in PD. Methods: We studied 28 PD patients, including 15 with VH (PD-VH) and 13 without VH (PD-NVH). Of the 15 PD-VH patients, 8 patients had cognitive impairment (PD-VHCI) whereas 7 did not (PD-VHNCI). All patients underwent [18F] fluorodeoxyglucose positron emission tomography ([18F] FDG PET) followed by statistical parametric mapping (SPM) analyses. Results: Compared to the patients with PDNVH, PD-VHNCI patients showed glucose hypometabolism in the inferior and middle temporal cortices, fusiform gyri, and frontal areas, suggesting the involvement of the ventral visual pathway. Compared to the patients with PDNVH, PD-VHCI patients showed glucose hypometabolism in the temporoparietal association cortices with scattered frontal areas. Conclusion: Dysfunction of ventral visual pathway involving the temporal lobe may play a key role in VH development in PD patients. The evolving distribution from the ventral visual pathway to more extensive posterior cortices in PD-VHCI patients suggests that VH may be a prodromal symptom occurring prior to CI in PD patients.
Pre-eclampsia and risk of cardiovascular disease and cancer in later life: systematic review and meta-analysis

Objective To quantify the risk of future cardiovascular diseases, cancer, and mortality after pre-eclampsia. Design Systematic review and meta-analysis. Data sources Embase and Medline without language restrictions, including papers published between 1960 and December 2006, and hand searching of reference lists of relevant articles and reviews for additional reports. Review methods Prospective and retrospective cohort studies were included, providing a dataset of 3 488 160 women, with 198 252 affected by pre-eclampsia (exposure group) and 29 495 episodes of cardiovascular disease and cancer (study outcomes). Results After pre-eclampsia women have an increased risk of vascular disease. The relative risks (95% confidence intervals) for hypertension were 3.70 (2.70 to 5.05) after 14.1 years weighted mean follow-up, for ischaemic heart disease 2.16 (1.86 to 2.52) after 11.7 years, for stroke 1.81 (1.45 to 2.27) after 10.4 years, and for venous thromboembolism 1.79 (1.37 to 2.33) after 4.7 years. No increase in risk of any cancer was found (0.96, 0.73 to 1.27), including breast cancer (1.04, 0.78 to 1.39) 17 years after pre-eclampsia. Overall mortality after pre-eclampsia was increased: 1.49 (1.05 to 2.14) after 14.5 years. Conclusions A history of pre-eclampsia should be considered when evaluating risk of cardiovascular disease in women. This association might reflect a common cause for pre-eclampsia and cardiovascular disease, or an effect of pre-eclampsia on disease development, or both. No association was found between pre-eclampsia and future cancer.
Prognostic values of distinct CBX family members in breast cancer

Chromobox (CBX) family proteins are canonical components in polycomb repressive complexes 1 (PRC1), with epigenetic regulatory function and transcriptionally repressing target genes via chromatin modification. A plethora of studies have highlighted the function specifications among CBX family members in various cancer, including lung cancer, colon cancer and breast cancer. Nevertheless, the functions and prognostic roles of distinct CBX family members in breast cancer (BC) remain elusive. In this study, we reported the prognostic values of CBX family members in patients with BC through analysis of a series of databases, including CCLE, ONCOMINE, Xena Public Data Hubs, and Kaplan-Meier plotter. It was found that the mRNA expression of CBX family members were noticeably higher in BC than normal counterparts. CBX2 was highly expressed in Basal-like and HER-2 subtypes, while CBX4 and CBX7 expressions were enriched in Luminal A and Luminal B subtypes of BC. Survival analysis revealed that CBX1, CBX2 and CBX3 mRNA high expression was correlated to worsen relapse-free survival (RFS) for all BC patients, while CBX4, CBX5, CBX6 and CBX7 high expression was correlated to better RFS in this setting. Noteworthily, CBX1 and CBX2 were associated with chemoresistance whereas CBX7 was associated with tamoxifen sensitivity, as well as chemosensitivity in breast tumors. Therefore, we propose that CBX1, CBX2 and CBX7 are potential targets for BC treatment. The results might be beneficial for better understanding the complexity and heterogeneity in the molecular underpinning of BC, and to develop tools to more accurately predict the prognosis of patients with BC.
Balancing Selection , Recombination Rate and Polymorphism : a Commentary

Producing new genetic variation is considered one of the major functions of recombination assisting in adaptation to environmental changes. All other things being equal, genetic variance in a sexual population with free recombination may be several times that for a population with no recombination (Charlesworth, 1993; Bürger, 1999). During the last decade, important evidence became available on association between recombina-tion and DNA sequence polymorphism (Two hypotheses were proposed to explain this association: selective sweep caused by spreading of new favorable mutations and background selection that considers the consequences of elimination of deleterious mutations. However, the remaining difficulties in interpreting the ever-increasing evidence on DNA sequence polymor-phism call for additional explanatory factors. Adaptive balanced poly-morphism caused by multilocus selection is a well-known deterministic mechanism that may complement the foregoing stochastic mechanisms. The numerical examples proposed in this article and based on diverse dynamic models, show that multilocus selection can cause opposite, either positive or negative, effects of recombination on sequence polymorphism. Abundant genetic variation found in natural populations results from complex interactions between deterministic and stochastic factors, historical and demographic aspects, including mutation, recombination, breeding system, selection, population subdivision and gene flow, random drift, population expansions and bottlenecks. Classical estimates from various Drosophila species indicated that up to 25-40% of the variation in fitness observed in natural populations can be regenerated by crossing over in one or two generations from a randomly drawn chromosome pair (Dobzhansky, 1959). Rich evidence is available on association between recombina-tion and DNA sequence polymorphism in natural populations. Drosophila studies were the first and still remain among the major sources of evidence. Begun and 2 Aquadro (1992) compared variation in recombination rate per physical DNA length in different regions of D. melanogaster with sequence polymorphism of these regions. Positive correlation between recombination and sequence polymorphism was established. Similar results were obtained in other species, including humans (Nach-Analysis of codon bias at 385 D. melanogaster loci conducted by Kliman and Hey (1993) showed that suppressed recombination in the residence region (e.g., near the centromeres or in chromosome 4) is correlated with low codon bias that was interpreted as relaxed selection for optimized translation. In our study of three Israeli natural populations of wild emmer wheat, positive correlation was found between variance in repeat number of dinucleotide microsatel-lite loci and their distance from the centromere (reviewed in Nevo et al., 2001; Li et al., 2002). In the light of …