Miracle-dz/UniFAR-FTUs huggingface dataset:
Use of School Libraries by Teachers: the Case of Oman

This study, which was conducted in the first half of 2005, investigated the nature and extent of use of school libraries by teachers in preparatory and secondary schools in Oman. It evaluated in detail the types of material and the range of services used. It also assessed the extent of teachers' satisfaction with provision. The results of the survey revealed a low use of school libraries by teachers. School libraries held poor collections, especially of audiovisual materials, journals and electronic resources, and access to the Internet. Teachers expressed their dissatisfaction with library services which appeared poorly developed and tended to be traditional in character.
Induction chemotherapy plus radiation compared with surgery plus radiation in patients with advanced laryngeal cancer.

BACKGROUND We performed a prospective, randomized study in patients with previously untreated advanced (Stage III or IV) laryngeal squamous carcinoma to compare the results of induction chemotherapy followed by definitive radiation therapy with those of conventional laryngectomy and postoperative radiation. METHODS Three hundred thirty-two patients were randomly assigned to receive either three cycles of chemotherapy (cisplatin and fluorouracil) and radiation therapy or surgery and radiation therapy. The clinical tumor response was assessed after two cycles of chemotherapy, and patients with a response received a third cycle followed by definitive radiation therapy (6600 to 7600 cGy). Patients in whom ther was no tumor response or who had locally recurrent cancers after chemotherapy and radiation therapy underwent salvage laryngectomy. RESULTS After two cycles of chemotherapy, the clinical tumor response was complete in 31 percent of the patients and partial in 54 percent. After a median follow-up of 33 months, the estimated 2-year survival was 68 percent (95 percent confidence interval, 60 to 76 percent) for both treatment groups (P = 0.9846). Patterns of recurrence differed significantly between the two groups, with more local recurrences (P = 0.0005) and fewer distant metastases (P = 0.016) in the chemotherapy group than in the surgery group. A total of 59 patients in the chemotherapy group (36 percent) required total laryngectomy. The larynx was preserved in 64 percent of the patients overall and 64 percent of the patients who were alive and free of disease. CONCLUSIONS These preliminary results suggest a new role for chemotherapy in patients with advanced laryngeal cancer and indicate that a treatment strategy involving induction chemotherapy and definitive radiation therapy can be effective in preserving the larynx in a high percentage of patients, without compromising overall survival.
An Adjustable Compliant Joint for Lower-Limb Exoskeletons

The field of exoskeletons and wearable devices for walking assistance and rehabilitation has advanced considerably over the past few years. Currently, commercial devices contain joints with stiff actuators that cannot adapt to unpredictable environments. These actuators consume more energy and may not be appropriate for human-machine interactions. Thus, adjustable compliant actuators are being cautiously incorporated into new exoskeletons and active orthoses. Some simulation-based studies have evaluated the benefits of incorporating compliant joints into such devices. Another reason that compliant actuators are desirable is that spasticity and spasmodic movements are common among patients with motor deficiencies; compliant actuators could efficiently absorb these perturbations and improve joint control. In this paper, we provide an overview of the requirements that must be fulfilled by these actuators while evaluating the behavior of leg joints in the locomotion cycle. A brief review of existing compliant actuators is conducted, and our proposed variable stiffness actuator prototype is presented and evaluated. The actuator prototype is implemented in an exoskeleton knee joint operated by a state machine that exploits the dynamics of the leg, resulting in a reduction in actuation energy demand and better adaptability to disturbances.
Genome‐wide linkage analysis for human longevity: Genetics of Healthy Aging Study

Clear evidence exists for heritability of human longevity, and much interest is focused on identifying genes associated with longer lives. To identify such longevity alleles, we performed the largest genome‐wide linkage scan thus far reported. Linkage analyses included 2118 nonagenarian Caucasian sibling pairs that have been enrolled in 15 study centers of 11 European countries as part of the Genetics of Healthy Aging (GEHA) project. In the joint linkage analyses, we observed four regions that show linkage with longevity; chromosome 14q11.2 (LOD = 3.47), chromosome 17q12‐q22 (LOD = 2.95), chromosome 19p13.3‐p13.11 (LOD = 3.76), and chromosome 19q13.11‐q13.32 (LOD = 3.57). To fine map these regions linked to longevity, we performed association analysis using GWAS data in a subgroup of 1228 unrelated nonagenarian and 1907 geographically matched controls. Using a fixed‐effect meta‐analysis approach, rs4420638 at the TOMM40/APOE/APOC1 gene locus showed significant association with longevity (P‐value = 9.6 × 10−8). By combined modeling of linkage and association, we showed that association of longevity with APOEε4 and APOEε2 alleles explain the linkage at 19q13.11‐q13.32 with P‐value = 0.02 and P‐value = 1.0 × 10−5, respectively. In the largest linkage scan thus far performed for human familial longevity, we confirm that the APOE locus is a longevity gene and that additional longevity loci may be identified at 14q11.2, 17q12‐q22, and 19p13.3‐p13.11. As the latter linkage results are not explained by common variants, we suggest that rare variants play an important role in human familial longevity.
Diagnostic accuracy of magnetic resonance imaging and magnetic resonance arthrography for triangular fibrocartilaginous complex injury: a systematic review and meta-analysis.

BACKGROUND Triangular fibrocartilaginous complex (TFCC) tears are common sources of ulnar-sided wrist pain and resultant functional disability. Diagnosis is based on the history and clinical examination as well as radiographic evidence of a TFCC central perforation or a radial/ulnar tear. The purpose of this study was therefore to evaluate the diagnostic accuracy of magnetic resonance imaging (MRI) and magnetic resonance arthrography (MRA) in the detection of TFCC injury in the adult population. METHODS Published and unpublished literature databases were searched. Two-by-two tables were constructed to calculate the sensitivity and specificity of MRI or MRA investigations against arthroscopic outcomes. Pooled sensitivity and specificity values and summary receiver operating characteristic curve evaluations were performed. The methodological quality of each study was assessed with use of the QUADAS (Quality Assessment of Diagnostic Accuracy Studies) tool. RESULTS Twenty-one studies were included in the review, and these series included a total of 982 wrists. On meta-analysis, MRA was superior to MRI in the investigation of full-thickness TFCC tears, with a pooled sensitivity of 0.75 and a pooled specificity of 0.81 for MRI compared with 0.84 and 0.95, respectively, for MRA. MRA and MRI performed at greater field strengths were reported to have greater sensitivity and specificity than those performed at lower field strengths. There were insufficient data to assess the diagnostic test accuracy for partial-thickness TFCC tears. CONCLUSIONS Given its acceptable diagnostic test accuracy, it is recommended that MRA, rather than MRI, be performed in when there are questions about the diagnosis and subsequent management of patients with ulnar-sided wrist pain.
Police and the Policed: A Comparison of Value Orientations and Ideological Perspectives

The local foundations of law enforcement, public schools, and numerous types of special purpose governments are intended to ensure a close relationship between prevailing community values and policy preferences. Community policing is one of such attempts to promote police and resident partnership in reducing local social disorder and crimes. This article makes use of Rokeach's theory of human values and his survey instrument and analytical methodology to assess the degree to which the values and ideological perspectives of police officers differ from those of the citizens they serve in a typical medium-sized city (about 170 000 population) in the Western region of the United States. The results reported here indicate that there is a substantial difference in value orientations and in ideological perspectives between police officers and citizens in this city. The implications of these findings are discussed with respect to the successful implementation of community policing.
Sources of Mathematics Self‐Efficacy in High School Students

The relation of four hypothesized sources of self-efficacy information to high school students' math self-efficacy was explored. Results indicated that (a) of the hypothesized sources, prior performance was the most efficient predictor of self-efficacy; (b) global academic self-concept did not explain unique self-efficacy variation beyond prior performance; and (c) the effect of self-efficacy on the perceived utility of math to future life and work plans was mediated by students' math/science interests.
Effects of Different Practice Conditions on Advanced Instrumentalists' Performance Accuracy

The purpose of this study was to examine the relative effects of five practice conditions on instrumentalists' performance of a musical composition. The authors assigned 60 college music students to one of five practice conditions and asked them to perform the composition after a brief practice session. Practice conditions were modeling, singing, silent analysis, free practice, and control. The authors evaluated each subject's performance in terms of correct notes, rhythms, phrasing or dynamics, articulation, and tempo. The authors found significant differences among the practice techniques in subjects' performance of correct rhythms, phrasing or dynamics, and tempo and nonsignificant differences among subjects' performances of correct notes and articulation. Further analysis demonstrated that modeling and practice were most effective in facilitating mastery of the selection. Singing and silent analysis were, in general, no more effective than sight-reading, with the exception of subjects in the silent analysis group, who were more accurate in their performance of the rhythms of the selection.
Inequality in Ethiopian higher education: reframing the problem as capability deprivation

The revitalization of Ethiopian higher education (HE) has been underway since the early 2000s. As well as the economic optimism evident in the ‘knowledge-driven poverty reduction’ discourse, social equity goals underscore the reform and expansion of the system. Notwithstanding the widening participation and the equity policy provisions put in place, the problem of inequality has persisted along the lines of ethnicity, gender, rurality and socio-economic background. This paper reviews major equity policy instruments and highlights the enduring inequalities in Ethiopian HE. It argues that this persistence is related in part to the ways in which the problem is represented in policy, and that redressing the problem necessitates framing inequality as capability deprivation rather than as issues of access and disparities in enrolment.
Economic and reproductive consequences of retained placenta in dairy cattle

The financial losses due to retained placenta in Dutch dairy cattle were estimated by using two different methods of calculation. A data-set containing the birth records of 160,188 Meuse-Rhine-Yssel cows provided data on the reproductive performance of cows with and without retained placenta. The fertility of cows after retention of the placenta appeared to be affected. An economic calculation made by adding the losses due to increased calving interval, increased culling rate, loss of milk production and the costs of veterinary treatment and drugs revealed that the total loss due to retained placenta was 471 pounds per year for a 100-cow farm with an average incidence of the condition (6.6 per cent). For a 'problem' farm with a 30 per cent rate, the loss was 2139 pounds per year. A computer farm simulation model, based on a stochastic determination of events, was used to make calculations for circumstances closely resembling those on farms. A 6.6 per cent rate of retained placenta caused a small but significant decrease in net return on labour and management; however, a 30 per cent rate caused highly significant changes. The economic effects of retained placenta were similar in magnitude in herds of high or low productivity and high or low fertility. Sensitivity analysis showed that the greatest financial losses were caused by loss of milk production, followed by the number of animals suffering from complications. The financial losses in herds with an average rate of retained placenta were thus of limited economic importance and therapeutic measures alone should be adequate. (ABSTRACT TRUNCATED AT 250 WORDS)
Retrospective approximation algorithms for the multidimensional stochastic root-finding problem

The stochastic root-finding problem (SRFP) is that of solving a system of q equations in q unknowns using only an oracle that provides estimates of the function values. This paper presents a family of algorithms to solve the multidimensional (q /spl ges/ 1) SRFP, generalizing Chen and Schmeiser's one-dimensional retrospective approximation (RA) family of algorithms. The fundamental idea used in the algorithms is to generate and solve, with increasing accuracy, a sequence of approximations to the SRFP. We focus on a specific member of the family, called the Bounding RA algorithm, which finds a sequence of polytopes that progressively decrease in size while approaching the solution. The algorithm converges almost surely and exhibits good practical performance with no user tuning of parameters, but no convergence proofs or numerical results are included here.
Longitudinal Study of Nonsuicidal Self-Injury Among Young Adolescents

This study examined rates, correlates and an interpersonal model of nonsuicidal self-injury (NSSI) among a sample of 508 sixth, seventh, and eighth graders. Questionnaires assessing NSSI, related health-risk behaviors, and relationships with parents were administered two times over an 11-month period. Overall, 7.5% reported engaging in NSSI within the past year with no significant differences across genders, ethnicities, or grade. Those engaging in NSSI were more likely to report having smoked cigarettes, taken drugs, and engaged in maladaptive eating behaviors. Consistent with an interpersonal model, those engaging in NSSI reported significant increases in the quality of their relationships with fathers over time. Clinical implications include considering the role of family members in efforts to prevent and treat NSSI.
Reduced Susceptibility of a Biomphalaria tenagophila Population to Schistosoma mansoni after Introducing the Resistant Taim/RS Strain of B. tenagophila into Herivelton Martins Stream

Studies performed in the last 30 years demonstrated that a strain of B. tenagophila from the Taim Biological Reserve is completely resistant to Schistosoma mansoni infection. This resistance to parasite infection is a dominant characteristic during crossbreeding with susceptible B. tenagophila strains. These experiments also identified a 350 bp molecular marker that is exclusive to the Taim strain and does not occur in other geographic strains of this snail species. The Taim strain (Taim/RS) of Biomphalaria tenagophila was bred on a large scale, physically marked and introduced into a stream in which previous malacological analyses had revealed the presence of only parasite-susceptible B. tenagophila. Samples of offspring captured 4, 11 and 14 months after the introduction of the Taim strain were examined, and the susceptibility of the snails to S. mansoni infection dropped from 38.6–26.5% to 2.1% during the 14 months after the introduction of the Taim snail strain. A significant correlation was also observed between the absence of infection and the identification of the Taim molecular marker. These results demonstrate that the genetic marker from the Taim strain was successfully introduced into the wild snail population. In addition, a significant relationship exists between the marker and resistance to infection.
Interrater reliability of job performance ratings: Growth to asymptote level with increasing opportunity to observe.

The interrater reliabilities of ratings of 9,975 ratees from 79 organizations were examined as a function of length of exposure to the ratee. It was found that there was a strong, nonlinear relationship between months of exposure and interrater reliability. The correlation between a logarithmic transformation of months of experience and reliability was . 73 for one type of ratings and . 65 for another type. The relationship was strongest during the first 12 months on the job. Implications for estimating reliabilities in individual and meta-analytic studies and for performance appraisal were presented, and possible explanations of the reliability-variance relationship were advanced
Comparison of surgical variables in cats undergoing single-incision laparoscopic ovariectomy using a LigaSure or extracorporeal suture versus open ovariectomy.

OBJECTIVE To evaluate the applicability of single-incision laparoscopic ovariectomy (SILOVE) in cats using a single-incision laparoscopic port (SILP); to compare surgical time, complications, and postoperative pain after SILOVE using a LigaSure (SILOVE-LS) or extracorporeal suture (SILOVE-ECS), and open ovariectomy (open-OVE). STUDY DESIGN Randomized, blinded, prospective study. ANIMALS Healthy, domestic female cats (n = 24). METHODS Cats underwent physical examination, packed cell volume, total solids and blood urea nitrogen analysis. Cats were randomly assigned to 1 of 3 groups: SILOVE-LS (n = 8), SILOVE-ECS (8) or open-OVE (8). Surgical time, complications, and postoperative pain scores were recorded. RESULTS Single-incision laparoscopic ovariectomy was successful in (n = 8) SILOVE-LS cats and (n = 5) SILOVE-ECS cats. Surgical time was significantly longer for the SILOVE-ECS group compared with the SILOVE-LS (P < .0001) and open-OVE (P < .0001) groups, which were not different (P = .55). Complications were more frequent in the SILOVE-ECS group and removal of the SILP was required to complete ovariectomy in 3 cats. Cumulative 4-hour pain scores were not different between groups. CONCLUSIONS Single-incision laparoscopic ovariectomy using a SILP is a feasible method for OVE in cats. Single-incision laparoscopic ovariectomy using an extracorporeal suture is more time consuming and associated with more complications than either the SILOVE-LS or open-OVE methods.
Non-Linear Neuronal Responses as an Emergent Property of Afferent Networks: A Case Study of the Locust Lobula Giant Movement Detector

In principle it appears advantageous for single neurons to perform non-linear operations. Indeed it has been reported that some neurons show signatures of such operations in their electrophysiological response. A particular case in point is the Lobula Giant Movement Detector (LGMD) neuron of the locust, which is reported to locally perform a functional multiplication. Given the wide ramifications of this suggestion with respect to our understanding of neuronal computations, it is essential that this interpretation of the LGMD as a local multiplication unit is thoroughly tested. Here we evaluate an alternative model that tests the hypothesis that the non-linear responses of the LGMD neuron emerge from the interactions of many neurons in the opto-motor processing structure of the locust. We show, by exposing our model to standard LGMD stimulation protocols, that the properties of the LGMD that were seen as a hallmark of local non-linear operations can be explained as emerging from the dynamics of the pre-synaptic network. Moreover, we demonstrate that these properties strongly depend on the details of the synaptic projections from the medulla to the LGMD. From these observations we deduce a number of testable predictions. To assess the real-time properties of our model we applied it to a high-speed robot. These robot results show that our model of the locust opto-motor system is able to reliably stabilize the movement trajectory of the robot and can robustly support collision avoidance. In addition, these behavioural experiments suggest that the emergent non-linear responses of the LGMD neuron enhance the system's collision detection acuity. We show how all reported properties of this neuron are consistently reproduced by this alternative model, and how they emerge from the overall opto-motor processing structure of the locust. Hence, our results propose an alternative view on neuronal computation that emphasizes the network properties as opposed to the local transformations that can be performed by single neurons.
Aggregation Framework and Patch-Based Image Representation for Optical Flow. (Méthode d'Agrégation et Représentation d'Images par Motifs pour le Flot Optique)

Nous nous interessons dans cette these au probleme de l'estimation dense du mouvement dans des sequences d'images, egalement designe sous le terme de flot optique. Les approches usuelles exploitent une parametrisation locale ou une regularisation globale du champ de deplacement. Nous explorons plusieurs facons de combiner ces deux strategies, pour surmonter leurs limitations respectives. Nous nous placons dans un premier temps dans un cadre variationnel global, et considerons un filtrage local du terme de donnees. Nous proposons un filtrage spatialement adaptatif, optimise conjointement au mouvement, pour empecher le sur-lissage induit par le filtrage spatialement constant. Dans une seconde partie, nous proposons un cadre generique d'agregation pour l'estimation du flot optique. Sous sa forme generale, il consiste en une estimation locale de candidats de mouvements, suivie de leur combinaison a l'etape d'agregation avec un modele global. Ce schema permet une estimation efficace des grands deplacements et des discontinuites de mouvement. Nous developpons egalement une methode generique de gestion des occultations. Notre methode est validee par une analyse experimentale consequente sur des bases de donnees de reference en vision par ordinateur. Nous demontrons la superiorite de notre methode par rapport a l'etat de l'art sur les sequences presentant de grands deplacements. La derniere partie de la these est consacree a l'adaptation des approches precedentes a des problematiques d'imagerie biologique. Les changements locaux importants d'intensite observes en imagerie de fluorescence sont estimes et compense par une adaptation de notre schema d'agregation. Nous proposons egalement une methode variationnelle avec filtrage local dediee au cas de mouvements diffusifs de particules.