Miracle-dz/UniFAR-FTUs huggingface dataset:
Planar Aperture Antenna With High Gain and High Aperture Efficiency for 60-GHz Applications

This paper presents two new planar aperture antennas (PAAs) with high gain and high aperture efficiency. Each antenna is composed of an opening cavity and differentially fed by the grounded coplanar waveguides at two parallel edges. In order to improve the gain of the original PAA, physical aperture has been extended and patches are introduced on the aperture to uniform the electric field to improve the aperture efficiency. Two corresponding prototypes are designed. Experimental results show that for the first prototype whose aperture is extended in the guided-wave propagation direction, the reflection coefficient can maintain less than −15 dB from 55 to 66 GHz. The maximum gain is 19.7 dBi at 63 GHz with the aperture efficiency of 66.03%, and the 3-dB gain bandwidth is 57–65 GHz. The second prototype, whose aperture is extended in the transverse direction, can achieve −15-dB impedance bandwidth from 56.4 to 66 GHz. The maximum gain is 20.3 dBi at 61 GHz with the aperture efficiency of 63.06%, and the 3-dB gain bandwidth is 57–64 GHz. Due to their outstanding performance and fabrication merits, the proposed PAAs are good candidates for the future cost-efficient fifth-generation wireless systems.
The Dual Role of Senescence in Tumorigenesis

La relacion entre senescencia y transformacion maligna ha sido objeto de particular atencion, debido a una aparente dualidad de funciones, en la que la senescencia participaria tanto en la induccion como en la inhibicion de la malignidad. El objetivo del trabajo fue revisar algunos de los hallazgos mas recientes sobre el papel de la senescencia en la progresion maligna y analizarlos a la luz del concepto de la pleiotropia antagonica y de su posible utilizacion como blanco terapeutico contra el cancer. Se considera a la senescencia como un mecanismo supresor tumoral, debido al efecto protector contra el cancer que ejerce en organismos jovenes, en caso de activacion de oncogenes o de inactivacion de genes supresores tumorales. Ademas de este efecto beneficioso, se le han adjudicado efectos deletereos asociados con la edad pues, en apariencia, la senescencia no solo recapitula el envejecimiento y por tanto la perdida de funcion y capacidad de regeneracion tisular, sino tambien puede inducir cambios preneoplasicos en las celulas del estroma adyacente, provocar enfermedades degenerativas o inducir la secrecion de factores promotores del crecimiento de celulas tumorales. La aparicion de defectos en el programa de senescencia puede contribuir a la transformacion tumoral, lo que la ha convertido en un atractivo blanco terapeutico contra el cancer. El avance en el estudio de los aspectos biologicos de la senescencia proporcionara valiosa informacion para el desarrollo de nuevas estrategias terapeuticas que detengan la progresion tumoral.
Tunable Ultranarrow Dual-Channel Filter Based on Sampled FBGs

A new kind of ultranarrow dual-bandpass fiber Bragg grating is proposed and demonstrated, for the first time to the author's best knowledge, with a symmetrical technique in which the first and second half gratings are sampled with the period of 0-and-pi and pi-and-0, respectively. This kind of grating can achieve dual-wavelength operation with a symmetrical spectrum. The unique spectral property of the proposed gratings is analyzed by means of Fourier theory and confirmed experimentally. By integrating the proposed grating with the 0-and-pi sampling grating, an ultranarrow dual-channel filter is designed in principle and demonstrated experimentally whose 3-dB bandwidth is less than 1 pm. By stretching the gratings, the two wavelengths of the proposed filter can be tuned whereas their channel spacing remains unchanged.
The role of subgroups in the communication patterns of global virtual teams

In this paper, we explore the emergence of subgroups in global virtual teams and consider the impact that subgroups have on the communication patterns and interactions of these teams. The study presented here takes the case of eight virtual teams that were formed between two universities in two different countries. Our findings reveal that subgroups exert different degrees of impact on the team as a whole. Where the impact was high, boundaries were created between team members in different subgroups while the development of team cohesiveness was restricted. Nevertheless, all teams were able to produce high quality outcomes, suggesting that the emergence of subgroups may not always have a negative influence on team performance. We discuss the implications of these findings for research and practice.
Data Structure Shape Inference and Verification for OO Programs

An approach to static analysis and verification of linked data structures found in OO programs is to firstly infer the “shape” of the object/data structures that may be produced by the program, and secondly to verify that these shapes are consistent with a programmer-specified “correct” data structure. A feature of the approach is that the shapes of the data structures may be graphed at any time, and are easy to understand. The underlying formalism is presented in abstract interpretation form, and a prototype tool has been developed.
Magnetic Resonance Imaging of Brain Edema in the Neonatal Rat: A Comparison of Short and Long Term Hypoxia-ischemia

ABSTRACT: Diffusion-weighted and transversal relaxation time (T2)-weighted magnetic resonance imaging were used to study the relationship between the duration of hypoxia-ischemia [unilateral common carotid artery (CCA) ligation and exposure to 8% oxygen] and the in vivo visualization of brain edema in 7-d-old rats. After CCA ligation, 35 animals were divided into five groups according to the length of exposure to 8% oxygen: no exposure (n = 9), 15 min (n = 12), 30 min (n = 5), and 1 h (n = 9) exposure; six animals served as controls. Diffusion weighted images were acquired 2 h after the hypoxic-ischemic insult, sequential T2 weighted images were recorded for up to 7 d and the outcome was documented by histologic examination at 21 d. The apparent diffusion coefficient of water in the ipsilateral cortex was significantly decreased in all animals recovering from prolonged hypoxic-ischemic insult (30 min and longer), whereas this was the case in only 40% of animals exposed to 15 min of hypoxia. Moreover, T2 prolongation of brain tissue occurred only in the former group. These results indicate transient and reversible alterations of physiologic water compartmentation for short term hypoxia-ischemia, but irreversible edema formation for long term hypoxia-ischemia. They support the hypothesis that the duration of hypoxia-ischemia determines whether a vasogenic edema and infarction follows the initial cytotoxic edema.
Primacy Effects in Clinical Judgments of Contingency

In contingency judgment a primacy effect exists when a conclusion about the relationship between clinical variables is inordinately influenced by cases seen earlier rather than later in a presentation sequence. In this study, medical and nursing trainees evidenced this behavior in a hypothetical clinical judgment situation. The behavior was tied to an attention decrement explanation, by which inattention to the later-presented cases leads to inaccurate recall of the relative frequencies of observed cases, which in turn induces a misjudgment of a disease-finding contingency. An explicit intervention based on this hypothesis, forcing attention to later cases by warning that recall of the case frequencies would be required, was effective in reducing primacy effects among medical students. A related, but less explicit, intervention was also tried. This intervention did not significantly reduce primacy effects among nursing students, but was somewhat effective among general undergraduate students performing a non-clinical contingency judgment task. Key words: clinical judgment; diagnosis; decision making. (Med Decis Making 8:216-222, 1988)
The Move to Make Social Data Portable

Social networks such as Bebo, Flickr, Facebook, Friendster, Linkedln, MySpace, and Orkut have attracted millions of users who are involved in blogging, participatory book reviewing, personal networking, photo sharing, and other similar activities. The users have freely submitted personal data to proprietary databases so that they can communicate and share with other participants. However, some have begun to grumble that the networks' proprietary code and lack of APIs don't allow them to export data from one site to another. For social-network operators, this information lock-in was supposed to be an advantage. Forcing participants to re-enter data for each service ostensibly would encourage them to stay with the same service. " Data portability allow us to take data, increasing competition [among sites] and creating a better environment for everyone using the Web.
Evaluation of investigations to diagnose the cause of dizziness in elderly people: a community based controlled study

Abstract Objective: To compare the findings in dizzy elderly people with those in controls of a similar age to identify which investigations differentiate dizzy from non-dizzy patients and to design an investigational algorithm. Design: Community based study of clinical and laboratory findings in dizzy and control elderly people. Setting: Research outpatient clinic at a teaching hospital. Subjects: 149 dizzy and 97 control subjects aged over 65 years recruited from a community survey and articles in the local press. Main outcome measures: Findings on physical examination, blood testing, electrocardiography (at rest and over 24 hours), electronystagmography, posturography, and magnetic resonance imaging of head and neck (125 (84%) dizzy subjects and 86 (89%) controls); hospital anxiety and depression score; responses to hyperventilation, carotid sinus massage, and the Hallpike manoeuvre. Results: Blood profile, electrocardiography, electronystagmography, and magnetic resonance imaging failed to distinguish dizzy from control subjects because of the frequency of asymptomatic abnormalities in controls. Posturography and clinical assessment (physical examination, dizziness provocation, and psychological assessment) showed significant differences between the groups. A cause of the dizziness was identified from clinical diagnostic criteria based on accepted definitions in 143 subjects, with 126 having more than one cause. The most common diagnoses were central vascular disease (105) and cervical spondylosis (98), often accompanied by poor vision and anxiety. Conclusion: Expensive investigations are rarely helpful in dizzy elderly people. The cause of the dizziness can be diagnosed in most cases on the basis of a thorough clinical examination without recourse to hospital referral. Key messages Expensive investigations are rarely helpful in the diagnosis of dizziness in elderly people The most common causes of dizziness in older people are central vascular disease and cervical spondylosis Poor vision and anxiety often accompany but are rarely the sole cause of dizziness These findings point to a definitive role for the general practitioner in the assessment of dizzy elderly patients
A voting method for stereo egomotion estimation

The development of vision-based navigation systems for mobile robotics applications in outdoor scenarios is a very challenging problem due to frequent changes in contrast and illumination, image blur, pixel noise, lack of image texture, low image overlap and other effects that lead to ambiguity in the interpretation of motion from image data. To mitigate the problems arising from multiple possible interpretations of the data in outdoor stereo egomotion, we present a fully probabilistic method denoted as probabilistic stereo egomotion transform. Our method is capable of computing 6-degree of freedom motion parameters solely based on probabilistic correspondences without the need to track or commit key point matches between two consecutive frames. The use of probabilistic correspondence methods allows to maintain several match hypothesis for each point, which is an advantage when ambiguous matches occur (which is the rule in image feature correspondence problems), because no commitment is made before analysing all image information. Experimental validation is performed in simulated and real outdoor scenarios in the presence of image noise and image blur. Comparison with other current state-of-the-art visual motion estimation method is also provided. Our method is capable of significant reduction of estimation errors mainly in harsh conditions of noise and blur.
PV Emulation by using DC Programmable Sources 11

The paper describes fast emulation of one selected photovoltaic system. This type of emulation reduces emulation time multiple times regarding standard emulation. By speeding up emulation time it is possible to predict electricity generation in advance on a daily basis. This facilitates the evaluation and comparison of electricity generation of photovoltaic systems of different power and/ or different photovoltaic (PV) modules. The emulated electrical energy of the selected photovoltaic systems will make it possible to put forward recommendations concerning the choice of the optimal photovoltaic system with regard to the climate elements of the region.
Clinical characteristics of chronic kidney disease patients with and without diabetes: a subanalysis of the PAERI study.

AIMS Diabetes is the leading cause of chronic kidney disease (CKD) in the United States, and cardiac disease is the primary cause of death in patients with CKD and diabetes. The Prevalence of Anemia in Early Renal Insufficiency (PAERI) study evaluated the prevalence of anemia and associated comorbidities in a community-based sample of patients with CKD. The purpose of this post hoc analysis was to identify differences, if any, in the prevalence and severity of anemia (hemoglobin < or = 12 g/dl (120 g/l)) and other clinical characteristics between CKD patients with diabetes and patients with CKD who did not have diabetes. MATERIALS AND METHODS The PAERI study was a prospective, cross-sectional, multicenter survey. Eligible patients were > or = 18 years old with CKD, defined as serum creatinine 1.5 - 6.0 mg/dl (132.6 - 530.4 micromol/l) in females and 2.0 - 6.0 mg/dl (176.8 530.4 micromol/l) in males within 12 months before enrollment. Study duration for each patient was a single site visit. RESULTS Of the original 5,222 patients enrolled, 3,361 had diabetes and 1,861 did not. A family history of diabetes was present in 72.7% of diabetic patients vs. 27.2% of nondiabetic patients (p < 0.0001). Patients with diabetes had a significantly higher prevalence of anemia (52.7 vs. 39.4%, p < 0.0001) and cardiac disease (55.7 vs. 42.9%, p < 0.0001). The prevalence of hypertension was high in both groups (91.5 and 89.3%). Significantly more diabetic patients than nondiabetic patients received angiotensin-converting enzyme inhibitors (60.4 vs. 43.8%, p < 0.0001). Hyperlipidemia was more common in patients with diabetes (73.9 vs. 55.4%, p < 0.0001). Patients with diabetes were slightly younger and had a significantly higher mean body mass index and lower transferrin saturation compared with nondiabetic patients. In diabetic and nondiabetic patients, more than 97% had glomerular filtration rate < 60 ml/min/1.73 m2 and more than 70% had serum creatinine < 2.5 mg/dl (221.0 micromol/l). CONCLUSIONS These findings underscore the extent and severity of concurrent illnesses in patients with both diabetes and CKD. In those patients, diabetes was associated with a greater prevalence of serious cardiac-related comorbidities than observed in nondiabetic patients.
Characterization of two different genes (cDNA) for cytochrome c oxidase subunit VIa from heart and liver of the rat.

By antibody screening of a rat liver and a rat heart cDNA library in lambda gt11 two clones coding for the liver‐ and heart‐specific subunit VIa of rat cytochrome c oxidase were isolated. In the heart cDNA sequence a TAA stop codon was found in frame 18 bp 5′ upstream of the first methionine codon, thus excluding a leader sequence for this protein. The two cDNAs contain the full‐length coding region of two subunits. The amino acid sequences of the two subunits show only 50% homology, whereas 74% homology was found between rat heart and bovine heart subunit VIa. By Northern blot analysis it is shown that the gene for subunit VIa from heart is only expressed in heart and skeletal muscle, whereas that from liver is also expressed in kidney, brain, heart and weakly in muscle.
Noise tolerance of frequency-locked dynamics.

We study the effect of noise on systems having two competing frequencies. In a mode-locked state, random perturbations are effectively suppressed, while outside a locking interval relatively high levels of broadband noise are observed, a correspondence first noted in experiments on charge-density waves. This correspondence is a general phenomenon and can be understood by simple dynamical considerations, as illustrated by the noisy circle map. We compare our analytic results for the observed power spectrum with digital simulations, and suggest tests of the theory for future experiments.
Factors contributing to work-ability for injured workers: literature review and comparison with available measures

Purpose. Despite a range of factors being proposed in research literature to be key to ‘work-ability’, agreed definitions and boundaries of this concept are lacking. This review sought to identify and clarify key factors thought to contribute to individual work-ability, then compare these against existing measures of work-ability for people with injury. Method. A literature search was undertaken based on principles of systematic review. MEDLINE, AMED, Scopus and Web of Science databases were searched. All potentially relevant articles were obtained and, if they met inclusion criteria, evaluated for quality. The search was expanded and repeated to identify currently available measures of work-ability for people with injury. These measures were then compared against components from the first search. Results. Thirty-four articles were obtained from the first search, and 23 provided information about factors that contribute to work-ability. Six broad categories were identified: physical, psychological, cognitive, social/behavioural, workplace factors, and factors outside the workplace. The follow-up search identified 10 measures. No one measure captured all six identified categories. Conclusions. Components contributing to work-ability go beyond the ability to perform particular work tasks. Measures intended to be used to inform vocational rehabilitation arguably need to consider all these factors to maximise likelihood of a sustainable return to work.
Treating Anterior Knee Pain in the Post-Arthroplasty Patient by Isolated Patellar Resurfacing (IPR)

Purpose: Patellar resurfacing during prosthetic replacement of the knee is associated with loosening and the need for secondary revision. In many cases the patella is left unreplaced during this procedure in order to decrease the revision risk. Some of these patients remain symptomatic after knee replacement. Secondary isolated resurfacing of the previously unresurfaced patella in total knee arthroplasty remains controversial. The aim of this retrospective study was to evaluate the outcome after isolated patellar resurfacing (IPR) as a second stage procedure. Methods: The study included 33 patients (22 females/11 males) who underwent resurfacing of the patella with a mean follow-up of 44.8±12.2 months. The mean age of the patients was 70.3±15 (range 39–95) years at the time of operation. The average period between total knee arthroplasty and patellar resurfacing was 23.3±15.2 months. The patient’s subjective satisfaction was assessed according to the Knee Society Score (KSS) questionnaire. Results: The mean objective KSS improved significantly from 41.6±9 to 64.9±11 (P < .01). The mean functional KSS also improved significantly from 41.6 ± 8 to 60. 5 ± 9 (P < .01). Two patients (6%) needed further operative revision. Multivariate analysis indicates that results are better in males and in nonobese patients. Conclusions: Although clinical scores showed significant improvement, some patients have pain and remain dissatisfied following IPR. IPR should be considered in patients who underwent prosthetic knee bicompartmental. Patellar resurfacing should be considered if there is no evidence of prosthetic components malalignment and at least 12 months have passed since the primary implantation.
Hiérarchisation des déterminants de la composition atmosphérique future en Europe

La composition chimique atmospherique depend principalement des emissions de polluants, de leurs precurseurs et de la meteorologie. Les strategies de gestion de la qualite de l’air ambitionnent des reductions substantielles d’emissions a long terme. Mais il est legitime d’evaluer si l’impact du changement climatique pourrait compenser ces efforts.Afin de repondre a cette problematique, on a recours a la modelisation qui permet de faire des projections a long terme, sous differents scenarios de sensibilite pour isoler les principaux facteurs. Se pose alors le probleme des incertitudes dans la modelisation. L’approche privilegie pour les etudes d’impact du climat est la modelisation ensembliste. Cependant du fait de l'important cout de calcul, on constate qu’aucune etude passee d’impact du climat sur la qualite de l’air ne repose sur un ensemble large de projections climatiques. C’est pourquoi, nous avons developpe une methode statistique alternative, entrainee sur des grands ensembles de simulation, pour caracteriser l'impact des emissions et de la meteorologie sur la qualite de l'air dans un contexte de changement climatique.Nous avons montre qu'un modele statistique permettait d'obtenir des reponses sur l'impact du climat sans forcement avoir a realiser explicitement des modelisations d'ensemble. La methode developpee donne des resultats avec une incertitude faible sur le long terme, meme si nous avons montre ses limites lorsqu'il s'agit de traiter des cas de pollution extremes.Afin de quantifier l'erreur induite par les donnees climatiques des modeles actuellement conservees de maniere partielle, nous avons realise une etude de sensibilite a la resolution verticale des modeles climatiques regionaux. Nous avons montre qu'un minimum de dix niveaux verticaux, ainsi que des variables supplementaires a l'existant etaient indispensables si l'on voulait que l'erreur de simulation reste inferieure au signal climatique etudie.Enfin, nous avons utilise le modele statistique pour confronter l’impact du changement climatique aux reductions d'emissions anthropiques attendues a l’avenir. Les resultats ont permis de mettre en evidence que le benefice climatique pour les particules fines, PM2.5, etait du meme ordre de grandeur que les baisses realisees dans le secteur le plus influent de chaque pays etudie. Ces baisses d'emissions vont donc etre renforcees par le changement climatique. Au contraire, pour le SOMO35, la penalite climatique va contrebalancer les efforts de reductions d'emissions realises entre 2050 et 2010. Pour les pays analyses, on peut estimer la date approximative de l’emergence du signal induit par le changement climatique malgre la reduction des emissions attendue dans la legislation actuelle.
Prenatal stress and affective disorders in a population birth cohort

Kleinhaus K, Harlap S, Perrin M, Manor O, Margalit‐Calderon R, Opler M, Friedlander Y, Malaspina D. Prenatal stress and affective disorders in a population birth cohort. Bipolar Disord 2012: 00: 000–000. © 2012 John Wiley & Sons A/S.Published by Blackwell Publishing Ltd.