Miracle-dz/UniFAR-FTUs huggingface dataset:
Un estudio bibliométrico en scopus sobre finanzas en el periodo 2004-2011

The importance of searches for lines of research in the academic databases of universities is crucial to improve the scientific management of the various researchers organized in academic groups of their respective academic units. Knowledge of recent years authors have conducted studies on finance is relevant in scientific articles bibliographic search of this issue in SCOPUS in the period 2004-2011, given that it allows those investigating financial problems to know what the new financial theories are at the frontier of knowledge and are developing in recent days to thereby raise issues of academic research bodies and the various graduate programs to which they belong. The search strategy was on finance SCOPUS to know how many articles have been published, its authors, number of publications by author, subject areas, types of documents, journals, keywords, authors' institutional affiliation, country and language. To design networks crosses authors were developing SQL statements with Visual Fox Pro 6.0 and 5.1 CmaapTools. Were 12 networks in total, we analyze the 5 biggest, most publications the authors had in 2004-2011 belong to networks, hence the importance of collaborative work, in the analyzed networks are studied and published international finance topics, financial institutions, finance and law, the evolution of finance, portfolio theory, financial markets and portfolio selection.
Secure Tag Search in RFID Systems Using Mobile Readers

One of the important features of an RFID system is its ability to search for a particular tag among a group of tags. In order to ensure privacy and security of the tags, the search has to be conducted in a secure fashion. To our knowledge not much work has been done in this secure search area of RFID. The minimal work that has been done do not comply with the EPC C1G2 (Class-1 Gen-2) standard since most of them use expensive hash operations or sophisticated encryption schemes that cannot be implemented in the low-cost passive tags that are highly resource constrained. Our work aims to fill this gap by proposing a protocol that is based on simple XOR encryption and 128 bit pseudo random number generators (PRNG), operations that can be easily implemented on low-cost passive tags. Thus, our protocol enables large scale implementations and achieves EPC C1G2 compliance while meeting the security requirements. The protocol provides additional protection by hiding the pseudo-random number during all transmissions using a blind-factor.
Role of chemotherapy prior to orchiectomy in metastatic testicular cancer—is testis really a sanctuary site?

A germ-cell tumour (GCT) of the testis is a chemosensitive tumour with high cure rates even in advanced disease. Radical inguinal orchiectomy is the initial procedure used to diagnose it which helps to risk-stratify these patients. However, in patients with life-threatening metastases, primary chemotherapy was attempted in a few studies, followed by delayed orchiectomy. The aim of this review is to study the histopathological findings of delayed orchiectomy and the retroperitoneal lymph node dissection (RPLND) specimens, to assess difference and concordance in response rates in histological types of GCTs in pathological specimens. Overall, 352 patients received initial chemotherapy followed by orchiectomy, and 235 of them had undergone RPLND. Delayed orchiectomy specimens had viable tumour in 74 (21%) patients, scarring/necrosis in 171 patients (48.5%), and teratoma in 107 (30.3%) patients. RPLND specimens had residual disease in 36 (15.3%) patients, scarring/necrosis in 100 patients (42.5%), and teratoma in 99 patients (42.3%). Patients with seminoma who underwent delayed orchiectomy had complete disappearance of tumour in 81.3% of cases, and in non-seminomatous GCT, it was 43.4%. These results raise the question of the existence of a blood–testis barrier in patients with advanced GCT and argue against the testis as a sanctuary site.
Definition of histopathologic changes in gastroesophageal reflux disease.

A series of 71 patients with multiple measured biopsies of the gastroesophageal junctional region permitting assessment of the presence and length of different glandular epithelial types is presented. All but nine of 53 patients in whom a 24-hour pH study was performed had abnormal reflux, suggesting that endoscopic recognition of an abnormal columnar mucosa at the gastroesophageal junction sufficient to precipitate multiple-level biopsies indicates a high probability of abnormal reflux. All patients had cardiac mucosa (CM) or oxyntocardiac mucosa (OCM). CM was present in 68 of 71 patients. The prevalence of intestinal metaplasia increased with increasing CM+OCM length, and was present in all 22 patients with a CM+OCM length >2 cm and in 20 of 49 patients with a CM+OCM length <2 cm. Patients with a CM+OCM length >2 cm had a markedly higher acid exposure than patients with a CM+OCM length <2 cm. The findings suggest that the presence of CM and OCM in the junctional region are predictive of abnormal acid exposure, and that increasing OCM+CM length correlates strongly with the amount of acid exposure. The histologic finding of CM and OCM represents a sensitive histologic criterion for gastroesophageal reflux rather than normal epithelia. These diagnostic criteria represent the first useful histologic definitions for assessing the presence and severity of reflux.
The Career Is Dead--Long Live the Career. A Relational Approach to Careers. The Jossey-Bass Business & Management Series.

PrefaceThe Authors Introduction: Long Live the Career - A Relational Approach Part One: What's Happening in the New Organization? 1. The New Protean Career: Psychological Success and the Path with a Heart 2. Beyond the Social Contract : An Analysis of the Executive View at Twenty-Five Large Companies 3. New Organizational Forms and the New Career Part Two: Relational Influences on Career Development 4. A Relational Approach to the Protean Worker 5. A Relational Approach to Career Development 6. Secure Base Relationships at Work 7. Growth-Enhancing Relationships Outside Work 8. Career Issues for Single Adults Without DepAndent Children Part Three: What Shoud I Do About It? 9. Creating Safe Havens at Work 10. Experience Is the Best Teacher, if You Can Learn from It: Real-Time Reflection and Development 11. The Value of Diversity in Career Self-Development 12. Career Development for the Older Worker 13. Finding Sanctuary in Post-Modern Life 14. Implications: The New Role of the Career Practitioner Final Reflections: Long Live the Career!
de Madrid Duality Between the Local Spectrum of a Signal andits Inverse Fourier Transform , the Local Signal

In this paper we study the local spectrum of a signal and its corresponding representation in the time/space domain, what we call the local signal. The local spectrum at the origin is interpreted as a low-pass variant ltering of the Fourier transform of the signal, and we show that, when self-similar scaled lters are used, the same relationship exists between the original and the local signals. In the two dimensional case the local signal corresponds to another important concept in vision, that of a foveated image. Furthermore, there is a large class of self-dual lters for which a perfect duality exists, that is, the kernel applied in the low-pass variant ltering is exactly the same in both the time/space and the frequency/spatial frequency domains. Some relevant properties, as well as connections with other multi-scale and time/frequency schemes, such as the wavelet transform or the scale transform, are reported. Finally, we present an eecient implementation using steerable lters and suggest potential applications.
An analysis of different variations of ant colony optimization to the minimum weight vertex cover problem

Ant colony optimization (ACO) has previously been applied to the Minimum Weight Vertex Cover Problem with very good results. The performance of the ACO algorithm can be improved with the use of different variations of the basic Ant Colony System algorithm, like the use of Elitism, Rank based approach and the MinMax system. In this paper, we have made an analysis of effectiveness of these variations applied to the Minimum Weight Vertex Covering Problem for different problem cases. This analysis is done by the observation of several properties of acquired solutions by these algorithms like best found solution, average solution quality, dispersion and distribution of solutions.
Chapter 14 Face Recognition at a Distance

Face recognition, and biometric recognition in general, have made great advances in the past decade. Still, the vast majority of practical biometric recognition applications involve cooperative subjects at close range. Face Recognition at a Distance (FRAD) has grown out of the desire to automatically recognize people out in the open, and without their direct cooperation. The face is the most viable biometric for recognition at a distance. It is both openly visible and readily imaged from a distance. For security or covert applications, facial imaging can be achieved without the knowledge of the subject. There is great interest in iris at a distance, however it is doubtful that iris will outperform face with comparable system complexity and cost. Gait information can also be acquired over large distances, but face will likely continue to be a more discriminating identifier. In this chapter, we will review the primary driving applications for FRAD and the challenges still faced. We will discuss potential solutions to these challenges and review relevant research literature. Finally, we will present a few specific activities to advance FRAD capabilities and discuss expected future trends. For the most part, we will focus our attention on issues that are unique to FRAD. Some of the main challenges of FRAD are shared by many other face recognition applications, and are thoroughly covered in other dedicated chapters of this book. Distance itself is not really the fundamental motivating factor for FRAD. The real motivation is to work over large coverage areas without subject cooperation.
New compound upper bound on MIMO channel capacity

MIMO channel capacity may be severely degraded due to correlation between individual sub-channels of the matrix channel. Several models, which are limited to some specific scenarios, have been developed to date to account for this effect. In this letter, we derive a new upper bound on the mean (ergodic) MIMO capacity, which is not limited to a particular scenario and accounts for both transmit (Tx) and receive (Rx) end correlations in such a way that their impact can be estimated separately and compared. Thus, a conclusion can be made as to which end contributes more to capacity reduction. In general, the higher correlated end has a dominant effect on the capacity.
The Cognitive Side of Odor Perception

Although often underrated in importance, the human sense of smell has both evolutionary and contemporary significance: our ability to perceive odors provides information that guides our responses to our environments. For example, the rich aromas wafting from a bakery encourage us to linger and savor them, whereas the smell of rotting garbage impels us to move away. No account of the role of smell in our lives would be complete, however, without an acknowledgment that people vary in their perception of ambient odors in their environment. Some of this variability has been attributed to inter-individual variation in sensitivity: some people have a keener sense of smell than others. However, recent findings in olfactory research has revealed that an important source of differences in response to ambient, environmental odors may also stem from cognitive factors, such as an individual’s beliefs and expectations about the consequences of exposure to an odor.
Noise cancelling for microphone arrays

An application of the noise cancelling method for suppression of noise of a microphone array system is discussed. First an overview of the noise cancelling approach is given. This is followed by a description of the employment of the method in a realized microphone array system. The limiting factors are described and theoretical limits of the noise suppression are derived. Experimental results, which are obtained in a realistic environment, are presented. The results show that depending on the recording situation the noise cancelling approach applied to a microphone array system leads to a significant enhancement of the signal to noise ratio of the array output signal.
An Algorithm for Extraction of Near Infrared Sublingual Veins

Sublingual vein is one important diagnostic measurement in Tongue Diagnosis. Segmentation method of sublingual veins from the near infrared sublingual images is proposed in this paper. According to the characteristic of the captured near infrared sublingual images, the radial projection method based on watershed algorithm is firstly applied to acquire the entire contour of the sublingual region, and then Dynamic thresholding is utilized to complete the binarization of the obtained effective sublingual region, and further confirm the candidate sublingual veins regions by considering the intensity feature of near infrared sublingual vein image. Finally, region growing is iteratively performed, which is restricted by original intensity feature of the near infrared sublingual image, to trace the contour of sublingual veins. Experimental results reveal that, the proposed methods did effectively isolate the sublingual veins and the surrounding tongue proper, and precisely trace the boundary of the sublingual veins.
Genomic targets, and histone acetylation and gene expression profiling of neural HDAC inhibition

Histone deacetylase inhibitors (HDACis) have been shown to potentiate hippocampal-dependent memory and synaptic plasticity and to ameliorate cognitive deficits and degeneration in animal models for different neuropsychiatric conditions. However, the impact of these drugs on hippocampal histone acetylation and gene expression profiles at the genomic level, and the molecular mechanisms that underlie their specificity and beneficial effects in neural tissue, remains obscure. Here, we mapped four relevant histone marks (H3K4me3, AcH3K9,14, AcH4K12 and pan-AcH2B) in hippocampal chromatin and investigated at the whole-genome level the impact of HDAC inhibition on acetylation profiles and basal and activity-driven gene expression. HDAC inhibition caused a dramatic histone hyperacetylation that was largely restricted to active loci pre-marked with H3K4me3 and AcH3K9,14. In addition, the comparison of Chromatin immunoprecipitation sequencing and gene expression profiles indicated that Trichostatin A-induced histone hyperacetylation, like histone hypoacetylation induced by histone acetyltransferase deficiency, had a modest impact on hippocampal gene expression and did not affect the transient transcriptional response to novelty exposure. However, HDAC inhibition caused the rapid induction of a homeostatic gene program related to chromatin deacetylation. These results illuminate both the relationship between hippocampal gene expression and histone acetylation and the mechanism of action of these important neuropsychiatric drugs.
Phcmaple: a Maple Interface to the Numerical Homotopy Algorithms in Phcpack

Our Maple package PHCmaple provides a convenient interface to the functions of PHCpack, a collection of numeric algorithms for solving polynomial systems using polynomial homotopy continuation, which was recently extended with facilities to deal with positive dimensional solution sets. The interface illustrates the benefits of linking computer algebra with numerical software. PHCmaple serves as a first step in a larger project to integrate a numerical solver in a computer algebra system.
Toward Next-Generation Networks : Consolidation , Integration & Network Control

During the late 1990’s “internet boom”, following the passage of the 1996 Telecommunications Act, it seemed that nothing could stand in the way of rapid development of a radically new telecommunications infrastructure. Doubts were occasionally raised about the wisdom of particular business plans for internet applications, but everyone accepted the basic premise that bandwidth-hungry applications would proliferate and require ever faster broadband networks. While some expressed reservations about the long-term survival chances of many dot-com plays, few questioned the future economic health of the ‘plumbers’ of the internet –whatever combination of ebusinesses would survive, they would create massive business opportunities for those making and deploying the networks’ switching gear, routers, and fiber optics.
Dust collector localization in trouble of moving freight car detection system

For a long time, trouble detection and maintenance of freight cars have been completed manually by inspectors. To realize the transition from manual to computer-based detection and maintenance, we focus on dust collector localization under complex conditions in the trouble of moving freight car detection system. Using mid-level features which are also named flexible edge arrangement (FEA) features, we first build the edge-based 2D model of the dust collectors, and then match target objects by a weighted Hausdorff distance method. The difference is that the constructed weighting function is generated by the FEA features other than specified subjectively, which can truly reflect the most basic property regions of the 3D object. Experimental results indicate that the proposed algorithm has better robustness to variable lighting, different viewing angle, and complex texture, and it shows a stronger adaptive performance. The localization correct rate of the target object is over 90%, which completely meets the need of practical applications.
How Good Is Your Tag?: RFID Backscatter Metrics and Measurements

Passive ultra-high-frequency (UHF) radio-frequency identification (RFID) has developed rapidly over the past two decades. In 2012 alone, about 4 billion tags were sold worldwide [1]. Manufacture and deployment at this volume has been made possible by minimizing tag cost, making a strong disincentive for the added expense of RF performance testing. As a result, performance metrics and test methods are not yet unified or generally adopted. Large customers in industry and government, however, wish to compare products with parameters like read range and inventory rate, so this problem is attracting more attention, and test standards are improving. This article discusses the history, state of the art, and some future challenges in this rapidly evolving area of study. In particular, we consider two metrics for digitally modulated backscatter of passive UHF RFID tags and how tests can be simplified for reduced costs. Examples for some 860-960 MHz commercial tags and applications are given to illustrate the method.
Optimization of circuit trajectories: an auxiliary network approach

On optimizing circuit trajectories, i.e. continuous paths of circuit parameters, the paper presents an auxiliary network approach, which utilizes Pontryagin's minimum principle. Based on a set of circuit element correspondence rules, the introduced approach establishes an auxiliary network for a given circuit to be optimized, and then circuit trajectories are optimized in a process of simulating the given circuit and the auxiliary network. The auxiliary network approach facilitates establishing analytic models in designing high-performance circuits that require fine tuning circuit trajectories. The paper details the theoretical framework of auxiliary network, and provides practical examples of its application in adiabatic circuit design
Semiparametric Estimation of Instrumental Variable Models for Causal Effects

This article introduces a new class of instrumental variable (IV) estimators of causal treatment effects for linear and nonlinear models with covariates. The rationale for focusing on nonlinear models is to improve the approximation to the causal response function of interest. For example, if the dependent variable is binary or limited, or if the effect of the treatment varies with covariates, a nonlinear model is likely to be appropriate. However, identification is not attained through functional form restrictions. This paper shows how to estimate a well-defined approximation to a nonlinear causal response function of unknown functional form using simple parametric models. As an important special case, I introduce a linear model that provides the best linear approximation to an underlying causal relation. It is shown that Two Stage Least Squares (2SLS) does not always have this property and some possible interpretations of 2SLS coefficients are brie y studied. The ideas and estimators in this paper are illustrated using instrumental variables to estimate the effects of 401(k) retirement programs on savings.
Constraints and the Adaptive Decision Maker Hypothesis

Participants examined sets of apartments described along 4 dimensions. Attribute values were manipulated to provide a way to infer strategy from response patterns. Experiment 1 established baseline behavior in unconstrained search, whereas Experiments 2-4 constrained participants to search either by alternative or by dimension. Dimensionwise presentation resulted in higher accuracy and reduced looking times. In 3-alternative choice, mere was no evidence that strategy use depended on constraint condition. Evidence for possible strategy differences across constraint conditions was found when either multiple judgments rather than a single choice had to be made or the number of alternatives was increased to 5. These results supported features of the adaptive decision maker hypothesis (J. W. Payne, J. R. Bettman, & E. J. Johnson, 1988) but suggested that strategy use is not always strongly linked to acquisition pattern.
Prevalence of and interventions for sarcopenia in ageing adults: a systematic review. Report of the International Sarcopenia Initiative (EWGSOP and IWGS)

Objective: to examine the clinical evidence reporting the prevalence of sarcopenia and the effect of nutrition and exercise interventions from studies using the consensus definition of sarcopenia proposed by the European Working Group on Sarcopenia in Older People (EWGSOP). Methods: PubMed and Dialog databases were searched (January 2000–October 2013) using pre-defined search terms. Prevalence studies and intervention studies investigating muscle mass plus strength or function outcome measures using the EWGSOP definition of sarcopenia, in well-defined populations of adults aged ≥50 years were selected. Results: prevalence of sarcopenia was, with regional and age-related variations, 1–29% in community-dwelling populations, 14–33% in long-term care populations and 10% in the only acute hospital-care population examined. Moderate quality evidence suggests that exercise interventions improve muscle strength and physical performance. The results of nutrition interventions are equivocal due to the low number of studies and heterogeneous study design. Essential amino acid (EAA) supplements, including ∼2.5 g of leucine, and β-hydroxy β-methylbutyric acid (HMB) supplements, show some effects in improving muscle mass and function parameters. Protein supplements have not shown consistent benefits on muscle mass and function. Conclusion: prevalence of sarcopenia is substantial in most geriatric settings. Well-designed, standardised studies evaluating exercise or nutrition interventions are needed before treatment guidelines can be developed. Physicians should screen for sarcopenia in both community and geriatric settings, with diagnosis based on muscle mass and function. Supervised resistance exercise is recommended for individuals with sarcopenia. EAA (with leucine) and HMB may improve muscle outcomes.