Miracle-dz/UniFAR-FTUs huggingface dataset:
Solar system genealogy revealed by extinct short-lived radionuclides in meteorites

Context. Little is known about the stellar environment and the genealogy of our solar system. Short-lived radionuclides (SLRs, mean lifetime τ shorter than 100 Myr) that were present in the solar protoplanetary disk 4.56 Gyr ago could potentially provide insight into that key aspect of our history, were their origin understood.Aims. Previous models failed to provide a reasonable explanation of the abundance of two key SLRs, 26 Al (τ 26 = 1.1 Myr) and 60 Fe (τ 60 = 3.7 Myr), at the birth of the solar system by requiring unlikely astrophysical conditions. Our aim is to propose a coherent and generic solution based on the most recent understanding of star-forming mechanisms.Methods. Iron-60 in the nascent solar system is shown to have been produced by a diversity of supernovae belonging to a first generation of stars in a giant molecular cloud. Aluminum-26 is delivered into a dense collected shell by a single massive star wind belonging to a second star generation. The Sun formed in the collected shell as part of a third stellar generation. Aluminum-26 yields used in our calculation are based on new rotating stellar models in which 26 Al is present in stellar winds during the star main sequence rather than during the Wolf-Rayet phase alone. Our scenario eventually constrains the time sequence of the formation of the two stellar generations that just preceded the solar system formation, along with the number of stars born in these two generations.Results. We propose a generic explanation for the past presence of SLRs in the nascent solar system, based on a collect-injection-and-collapse mechanism, occurring on a diversity of spatial/temporal scales. In that model, the presence of SLRs with a diversity of mean lifetimes in the solar protoplanetary disk is simply the fossilized record of sequential star formation within a hierarchical interstellar medium. We identify the genealogy of our solar system’s three star generations earlier. In particular, we show that our Sun was born together with a few hundred stars in a dense collected shell situated at a distance of 5−10 pc from a parent massive star having a mass greater than about 30 solar masses and belonging to a cluster containing ~1200 stars.
A New Image Enhancement Based on the Fuzzy C-Means Clustering

The enhancement of the infrared dim small target image is a very important pretreatment in automatic recognition of target and infrared target tracking system. The paper proposed a new image enhancement algorithm based on the Fuzzy C-Means clustering. The algorithm conducted cluster analysis on the pixel and gray of the infrared image and increased the image gray level difference between the various objects so as to achieve the enhanced purpose for infrared small target image. The experimental results showed that this algorithm is able to enhance small target image to the maximum extent with ensuring no loss of the target information Streszczenie. W artykule za[proponowano nowy algorytm poprawy jakości obrazu otrzymanego w podczerwieni bazujący na klastrach rozmytych typu C. Algorytm analizuje piksle i odcień szarości obrazu i rozszerza poziom różnic szarości. Symulacje potwierdziły przydatność algorytmu dla małych zbiorów. (Nowy algorytm poprawy obrazu w podczerwieni bazujący na rozmytych klastrach typu C).
Knowledge and practice of primary health-care physicians regarding the dengue fever in Makkah Al-Mokarramah city, 2013 -

Background: Since 1994, Makkah province became a dengue-endemic area with high rate of dengue infection during spring and early summer. The primary-care physician plays a key role in dengue diagnosis, management, and prevention. Objective: To assess the knowledge and practice of the primary-care physicians in the Ministry of Health regarding the preventive and clinical aspects of dengue fever in Makkah Al-Mokarramah city in 2013. Materials and Methods: A cross-section analytical study was conducted including physicians working in selected primary health–care centers in Makkah Al-Mokarramah city. Self-administered validated questionnaire was applied. It comprised three main parts: sociodemographic data, questions to assess knowledge regarding preventive and clinical part of dengue fever, and questions to assess the practice regarding preventive and clinical part of dengue fever. Results: A response rate of 90.9% was obtained among primary health–care physicians in Makkah. Almost one-third of them (34.8%) were aged 25–30 years and only 8.6% were over 45 years. Physicians in the age group 25–30 years constituted 42.1% of the participants. More than half of them (54.1%) were females. Overall, knowledge regarding dengue fever was excellent among 43.4% of the respondents and only insufficient among 10.1%. Almost three-quarters (74.2%) of the physicians always or most of the time performed dengue test if they suspect dengue compared to 16.4% never performed dengue test for suspected cases. Among those who did not perform dengue test and responded to the question, the most common reported cause was the unavailability of the test at their workplace (82.6%). Almost two-thirds of physicians (61.6%) reported that their center did not provide to the patients any type of preventive methods to avoid mosquito bite. Conclusion: The results of this survey provide a useful opportunity to identify strengths and areas in need of improved knowledge and practice in primary-care management of dengue.
Non-suicidal Self-injury in the Over 40s: Results from a Large National Epidemiological Survey

Using data drawn from a national community study of Non-suicidal Self-injury (NSSI) in 12,006 Australians aged 10-100 years, we focused on 78 subjects aged ≥ 40 years (53 females, 25 males) reporting NSSI in the previous 12 months. Mean onset was 25.4 years (SD 14.66, range 5-60, mode 15 years), 60.3% beginning before 25 years. Seventeen people began self-injury after 40 (13 females (9.9%); 4 males (6%)). For the month prior, 19 older females claimed 1-50 episodes (mean 10.5), 9 males 1-28 episodes (mean 7.4). Compared to younger self-injurers, older self-injurers more likely had a psychiatric diagnosis (OR21.22, 95% CI [3.90, 115.52]), higher psychological distress (OR9.41, CI [1.73, 51.24]), and lifetime suicide attempts (38.2% to 28.0%, NS). However, younger self-injurers were more likely to report feeling suicidal in the previous four weeks (OR3.16, 95% CI [1.18,8.45]) with 80.0% (versus 55.8% of ≥ 40 years) scoring high on a brief suicidal ideation scale. Most common motivation for NSSI was ‘emotion regulation’, with self-injurers ≥ 40 years (68.6%) more likely to endorse this than <25 years (54.5%) (NS). Compared to those ceased for over two years, current older self-injurers reported higher psychological distress (OR2.39, 95% CI [1.06, 5.40]) and self-blame (OR3.79, CI [1.75, 8.21]). Respondents ≥ 40 years with no NSSI for two years (n=239) reported they had ‘grown up’ or ‘gotten over it’ (33.9%), ‘talked to a mental health professional’ (26.8%), ‘learned better ways to cope with stress’ (25.5%) and ‘received support from other people’ (25.1%). Only 25.7% asked for professional help. Barriers to help-seeking were ‘feeling as if their NSSI problem was not severe enough’ (29.7%), ‘feeling ashamed or embarrassed’ (24.3%), ‘feeling no-one would be able to help’ (21.6%) and ‘not wanting or needing help’ (21.6%). It appears NSSI in the over 40s reflects a hidden and very troubled group. The potential seriousness of self-injury in this group has implications for families, general practitioners, mental health clinicians, emergency departments, and community services.
Effect of SiO2 nanoparticles on the hydrophobic properties of waterborne fluorine-containing epoxy coatings

A nano-composite coating was developed by adding nano-SiO 2 to a home-made Waterborne fluorine-containing epoxy resin. The surface hydrophlicity of the coating was investigated by the contact angle with water. As the particle sizes of SiO2 changed from 7-18nm, the water contact angle of the films changed from 62.8° to 85.6°. The surface energy of the coating was calculated out through measuring the contact angles of the coating with water and 1-bromonaphthalene. The presence of SiO2 significantly enhanced the corrosion resistance of the composite coatings, which showed two times than that of the neat waterborne fluorine-containing epoxy coatings. And the thermos dynamic stability of the composite coatings has been significantly improved. When the silica content is 2.0%, the coating has the largest contact angle. Other performance of the coating was investigated in terms of their thickness, flexibility, pencil hardness, impact resistance.
Perception : Pacial Differences : Secondary EducatIon ; Student Att 4 tudes : Student Participation : Student Reaction :

A counseling analogue study was designed to evaluate the effects of tounselor ethnicity and counselor trustworthiness on American Indian student ratings of perceived counselor "'. rustwortirtness. " Forty-four American Indian high school students viewed a '. wo-segment videotape analogue of two counseling interviews in which an American Indian student discussed a problem about future educational plans. Four ,:onditions were defined by (a) two male interviewers (Indian and non-Indian); and (b) trustworthy and untrustworthy interview performance. SubjectE then rated the counselors' perceived level of trustworthiness on the Counselor Effectiveness Rating Scale and the Counselor Rating Form. Results indicated that the role manipulation of trustworthy interview behaviors was successful.
A Poincaré-Birkhoff-Witt theorem for quantized universal enveloping algebras of type A n

In this paper, we construct an explicit basis of the quantized universal enveloping algebra Uq(slN + 1(C)). Let A = (%-)i<jj<;v be a symmetrizable generalized Cartan matrix, and &(A) the Kac-Moody Lie algebra of A. Motivated by studies of quantum YangBaxter equations, Jimbo [6] and Drinfeld [2, 3] introduced a Hopf algebra Uq(&(A)) with a nonzero complex parameter q. This Hopf algebra, which is also called [3] a "quantum group", can be considered as a natural ^-analogue of the universal enveloping algebra U(&(A)) of &(A). For example, it is known that the representation theory of Uq(&(A)) is quite analogous to that of U(&(A)). See Lusztig [9] and Rosso [11]. The purpose of this paper is to show that, if &(A) is of type AN, and q 8 =£ 1, then Uq(&(A)) has a PoincareBirkhoff-Witt type basis. Let R be a commutative ring with 1. Denote by slN+l(R), the Lie algebra of (N + 1) x (N + 1) matrices over R of trace 0. It has the standard J^-basis consisting of the elements
Strict Priority Scheduler for Rate Controlled Transmission

The paper proposes a modification to the strict priority scheduler, to guarantee the Quality of Service (QoS) of a network with variable and undetermined bandwidth capacity. The proposed modifications make it possible to accomplish QoS along the path. The presented solution allows providing the minimum guaranteed transmission rates for all active flows with the respect to their priorities and to provide the fair share of the additional bandwidth. The scheduler also rejects flows, for which the minimum rate requirements exceed the available bandwidth. Moreover, a simple algorithm for mapping the WiMAX traffic classes to the strict n-priority scheduler bands is described. This allows providing WiFi WiMAX internetworking with the QoS support. The presented test results show that the proposed scheduler preserves the defined, minimum transmission rates and improves the performance of the delay and throughput. Keywords-packet scheduling; strict priority scheduler; Quality of Service; wireless network.
Analysis on fitting capability to human aberrations of bimorph deformable mirrors

This study adapted simulations to analyze the fitting capabilities to human aberration of three kinds of Bimorph Deformable Mirrors (DMs) with different spatial resolutions, especially the capability to fit to 3~ 35th orders of Zernike static aberrations and the human aberrations, including the eye of diseases. It's shown that Bimorph DM is well suitable for fitting to low-order aberrations with the error less than 0.15. As the spatial resolution increased, the capability of fitting aberrations enhanced totally. Compared with traditional discrete piezoelectric DM, 35-element Bimorph DM had smaller fitting error on the first 20th Zernike aberration. This simulated analysis provided an analytical method for the selection of Bimorph DMs for high-resolution human eye imaging systems. In addition, it provided a research foundation of further improvement of the Bimorph DM in fitting aberrations capability.
Evaluación de los sistemas QA de dominio abierto frente a los de dominio especializado en el ámbito biomédico

Resumen. Los sistemas QA se presentan como una alternativa a los sistemas tradicionales de recuperacion de informacion tratando de ofrecer respuestas precisas a preguntas factuales. Hemos realizado un estudio para evaluar la eficiencia de estos sistemas como fuentes terminologicas para los especialistas y para usuarios en general. Con este fin, se ha evaluado el funcionamiento de cuatro sistemas QA, dos especializados en el dominio biomedico (MedQA y HONqa) y dos de dominio general (START y QuALiM). El estudio ha utilizado una coleccion de 150 preguntas biomedicas definicionales (What is.? ), obtenidas del sitio web medico WebMD. Para determinar el funcionamiento, se han evaluado las respuestas ofrecidas utilizando una serie de medidas especificas (precision, MRR, TRR, FHS). El estudio permite confirmar que los cuatro sistemas son utiles para la recuperacion de informacion definicional en este ambito, ya que han proporcionado respuestas coherentes y precisas con un grado de aceptabilidad adecuado.
on n-ary Algebraic Structures

We review the basic definitions and properties of two types of n-ary structures, the Generalized Lie Algebras (GLA) and the Filippov (≡ n-Lie) algebras (FA), as well as those of their Poisson counterparts, the Generalized Poisson (GPS) and Nambu-Poisson (N-P) structures. We describe the Filippov algebra cohomology complexes relevant for the central extensions and infinitesimal deformations of FAs. It is seen that semisimple FAs do not admit central extensions and, moreover, that they are rigid. This extends Whitehead’s lemma to all n ≥ 2, n = 2 being the original Lie algebra case. Some comments on n-Leibniz algebras are also made.
Youth Treatment Adherence at a Rural Community Mental-Health Clinic

This study examined the relationships between youth and adult psychopathology, and sociodemographic factors and treatment adherence for youth attending outpatient treatment at a rural community mental-health clinic. “Adherence” was defined as attending more than five sessions, while “non-adherence” was defined as attending fewer than or equal to five sessions. Results revealed no significant differences between youth adhering or not adhering to treatment depending on the relation of caregiver to youth or the mode of transportation taken to the clinic. Furthermore, caregiver and youth psychopathology and caregiver’s estimated travel time to the clinic did not predict treatment adherence. Incidentally, examination of sociodemographic variables revealed that caregivers and youth who spoke Spanish in the home were more likely to adhere to treatment. Additionally, supplemental analyses examining psychopathology and treatment adherence using a “total treatment” operational definition found that higher levels of youth anxiety predicted adherence to treatment. Implications of these results are discussed.
Impact of Related Acquisition Strategy on Bidding Company Performance

This paper presents the results of a classroom-based study which I conducted for my PhD thesis. It is an experimental study on the comparative benefits of Isolated and Integrated FFI in primary EFL education. Greek 5th year primary learners aged 10-11 were exposed to Integrated FFI (n= 75) on the English Past Tense and their learning gains were compared to the gains of their peers who were exposed to Isolated FFI (n = 73), as these were first defined by Spada and Lightbown (2008). Integrated FFI was operationalised as the provision of comprehension and production structure-based communicative tasks; that is, tasks that were especially crafted to provide meaningful contexts for the practice of the English Past tense and its progressive aspect. In completing those tasks, learners focused on comprehension and the expression of meaning while they produced the target structures and received corrective feedback on their errors. Isolated FFI was operationalised as the explicit presentation and meta-linguistic explanations of the rules that govern the formation and use of the same target structures, coupled with grammatical consciousness-raising tasks, structural grammar exercises and controlled oral and written production activities. I taught the groups myself as a teacher researcher throughout the intervention, which lasted for 12 hours. The two groups were tested four times; each test was given after completing six hours of treatment and two months after the end of the intervention. The tests included grammaticality judgments, multiple-choice tests, tense formation tests, an open cloze, a question formation task, picture description, sentence matching and text completion tests. I will present the results of the statistical analyses from the comparisons of these groups. One suggestion is that, planned Integrated FFI targeting specific structures in context, if applied consistently for some time, produces equivalent learning gains to Isolated FFI even for elementary-level EFL learners whose opportunities for productive use of the language are generally limited within the classroom context.
Spatial estimation of mean temperature and precipitation in areas of scarce meteorological information

In regions of complex relief and scarce meteorological information it becomes difficult to implement techniques and models of numerical interpolation to elaborate reliable maps of climatic variables essential for the study of natural resources using the new tools of the geographic information systems. This paper presents a method for estimating annual and monthly mean values of temperature and precipitation, taking elements from simple interpolation methods and complementing them with some characteristics of more sophisticated methods. To determine temperature, simple linear regression equations were generated associating temperature with altitude of weather stations in the study region, which had been previously subdivided in accordance with humidity conditions and then applying such equations to the area’s digital elevation model to obtain temperatures. The estimation of precipitation was based on the graphic method through the analysis of the meteorological systems that affect the regions of the study area throughout the year and considering the influence of mountain ridges on the movement of prevailing winds. Weather stations with data in nearby regions were analyzed according to their position in the landscape, exposure to humid winds, and false color associated with vegetation types. Weather station sites were used to reference the amount of rainfall; interpolation was attained using analogies with satellite images of false color to which a model of digital elevation was incorporated to find similar conditions within the study area.
A very early estimation of software development time and effort using neural networks

In spite of years of research and development, formal structured estimation of time and effort required to develop a Management Information System (MIS) is still an open problem. Usual estimation techniques applied by now are supported by the not so realistic premise of requirements stability, and often human experts are required to apply them. This paper considers models of estimation based on metrics available on early design phase. Our research work aims to develop formal estimation models for time and effort needed for MIS development. These models use development team efficiency, requirements volatility, development speed and system complexity as input parameters. We also identify which input metrics are adequate for measuring system’s cognitive complexity and found that useful metrics can be obtained automatically from the system users data views very early on the life cycle with independence of the technology used and without human intervention. We tested the metrics estimation capability using Artificial Neural Networks (ANN), and thus confirmed an existing functional relation among input and output metrics (time and effort). Once trained, the ANN predicts effort needed with a 15% average error and time needed with a 30% average error.
On the Discrete-Time Geo / G / 1 Queue with Vacations in Random Environment

A discrete-time Geo/G/1 queue with vacations in random environment is analyzed. Using the method of supplementary variable, we give the probability generating function (PGF) of the stationary queue length distribution at arbitrary epoch. The PGF of the stationary sojourn time distribution is also derived. And we present the various performance measures such as mean number of customers in the system, mean length of the type-i cycle, and mean time that the system resides in phase 0. In addition, we show that theM/G/1 queue with vacations in random environment can be approximated by its discrete-time counterpart. Finally, we present some special cases of the model and numerical examples.
Relationship between family function and low back pain in nurses working in a tertiary hospital in North Central Nigeria

Aim: The study aimed to determine the relationship between family functioning and low back pain (LBP) in nurses in a tertiary hospital in North Central Nigeria. Methods: A cross-sectional study using structured questionnaires was done among 204 randomly selected, eligible, consenting nurses in a tertiary hospital between August-November 2011. Sociodemographic data and Family APGAR Scores were collected, collated and analyzed with SPSS version 21. Results: Results showed that 92.2% (188) were from high functioning families, while 7.8% had moderately dysfunctional families. None of the respondents were from severely dysfunctional families. Independent t-test did not show any significant difference in the family function scores for nurses with LBP and those that did not have LBP, t = 0.716, P = 0.475. Spearman’s rank correlation did not reveal any significant relationship between severity of back pain and Family APGAR. Spearman’s r = -0.046, P = 0.606. Conclusion: Family function scores did not significantly differ for nurses with LBP and those without LBP. The low level of family functioning might have been due to the self-reported nature of the Family APGAR tool. Further studies should consider other assessments of family functionality as a possible predictor of LBP in nurses.
Asymmetric Knowledge Spillovers in a Model of Regional Innovation and Growth

This paper formulates a theoretical model to investigate the determinants of the rate of innovation across economies that differ in important ways in industrial structure and face the possibility of asymmetric knowledge spillovers between industries. In particular, I wish to extend the model of expanding product variety in order to study the implications of a highly diversified sectoral composition across regional industrial bases on rates of economic innovation. A global knowledge spillover has long been recognized as a possible explanation for the absence of scale effects. What has not been appreciated is the unstable nature of the equilibrium associated with this explanation. The model can, therefore, be used to understand how, in a dynamic setting, certain regions, such as Silicon Valley or the high-tech corridor stretching along Route 28 from northern Massachusetts into southern New Hampshire, become centers of innovative activity while other regions' industries fade in importance. These results suggest a strong role for regional economics in interpreting the results of new growth theory.