Miracle-dz/UniFAR-FTUs huggingface dataset:
Evaluation of Learning Schemes Used in Information Retrieval

Searching within the context of information retrieval may be viewed as a communication process between the users and the indexers (or the authors). It is known that in expressing the same concept or idea, different people tend to use different words or phrases, and also that the meaning of words attached to document surrogates tends to change over time. To overcome these phenomena, various learning schemes have been designed so as to automatically infer knowledge about document content from the relevance assessments of past queries. Thus, in contrast to most retrieval models that represent the semantic content of documents as static entities, these adaptive search models might change the descriptions of documents through an inductive learning scheme. The evaluation of such dynamic document space strategies may be based on retrospective tests within which the same set of queries is applied to train and test the system. Based on cross-validation principles, this paper suggests a more "honest" evaluation methodology that demonstrates a radically different perspective relative to retrieval effectiveness measures used by current information retrieval learning schemes. Moreover, this paper demonstrates that the size of the test-collection might also lead to misleading conclusions about the search performance of a retrieval scheme.
Interaction patterns for auditory user interfaces

This paper proposes the use of interaction patterns in the design process of auditory displays in human-computer interaction. To avoid introducing visual concepts in auditory design, a common ground for developing user interfaces without determining their means of representation is proposed. This meta domain allows for the design of user interfaces which can be equally realised in different interaction modalities or multi-modal settings. Although this work focuses on the auditory domain the concept shown is developed keeping in mind that it should be equally applicable in other modalities. A set of mode independent interaction patterns for design in the meta domain are introduced along with their transformation into the auditory domain. A real world application was chosen to evaluate the approach. MS Explorer was analysed, described through the mode independent interaction patterns and transformed into the auditory domain making extensive use of 3D audio rendering techniques. The result, a virtual audio reality version of a file manager, was evaluated with normally sighted persons as well as visually impaired and blind participants showing the feasibility and usability of the approach.
Register File customization for low power embedded processors

Power consumption is a critical design issue in embedded processors. One common component in the processor is the Register File (RF). RF takes a large portion of processor area and consumes a significant amount of power. This paper proposes a customization approach at the hardware description modeling level to reduce the register file power consumption. The customization does not alter the RF interface to other hardware components and is completely transparent to software code. Therefore, it can be readily integrated into any processor design tool. We have applied our approach to a set of benchmarks. Our experimental results show that the power savings range from 18.3% to 45.5%; on average, 30.625% of register file power can be reduced.
A Resource Allocation Algorithm in Cognitive Radio Networks Based on Cooperative Game Theory Approach

In cognitive networks, the parameters of radios were adapted to achieve end-to-end or network objectives such as spectral or energy efficiency, reliability, or throughput maximization. In these networks, the licensed spectrum and dynamic spectrum sharing based on opportunistic communication play an important role of resource allocation. Since the resource allocation networks always cooperate and coexist in cognitive, Game theory has been employed to analysis that. In really case, the cooperator only have partial or no information concerning in advance to making decision. However, the current game theory models in cognitive radio networks always regard they have enough information. In this paper, we take Incomplete Information into account and propose an algorithm base on game theory to resource allocation. Compare traditional algorithms, this one can improve the in the cognitive radio networks as the simulations showing.
A Modified Doherty Power Amplifier With Extended Bandwidth and Reconfigurable Efficiency

This paper derives the theory and presents measurements of a new power amplifier based on the Doherty power amplifier topology. It is theoretically shown that the proposed amplifier can simultaneously provide high efficiency at both full output power and at output power back-off, over a much improved bandwidth compared to the conventional Doherty power amplifier. It is also shown that the proposed amplifier allows reconfiguration of the efficiency in power back-off without the need of tunable elements.
GreenDCN: A General Framework for Achieving Energy Efficiency in Data Center Networks

The popularization of cloud computing has raised concerns over the energy consumption that takes place in data centers. In addition to the energy consumed by servers, the energy consumed by large numbers of network devices emerges as a significant problem. Existing work on energy-efficient data center networking primarily focuses on traffic engineering, which is usually adapted from traditional networks. We propose a new framework to embrace the new opportunities brought by combining some special features of data centers with traffic engineering. Based on this framework, we characterize the problem of achieving energy efficiency with a time-aware model, and we prove its NP-hardness with a solution that has two steps. First, we solve the problem of assigning virtual machines (VM) to servers to reduce the amount of traffic and to generate favorable conditions for traffic engineering. The solution reached for this problem is based on three essential principles that we propose. Second, we reduce the number of active switches and balance traffic flows, depending on the relation between power consumption and routing, to achieve energy conservation. Experimental results confirm that, by using this framework, we can achieve up to 50 percent energy savings. We also provide a comprehensive discussion on the scalability and practicability of the framework.
A gain-of-function mutation of JAK2 in myeloproliferative disorders.

BACKGROUND Polycythemia vera, essential thrombocythemia, and idiopathic myelofibrosis are clonal myeloproliferative disorders arising from a multipotent progenitor. The loss of heterozygosity (LOH) on the short arm of chromosome 9 (9pLOH) in myeloproliferative disorders suggests that 9p harbors a mutation that contributes to the cause of clonal expansion of hematopoietic cells in these diseases. METHODS We performed microsatellite mapping of the 9pLOH region and DNA sequencing in 244 patients with myeloproliferative disorders (128 with polycythemia vera, 93 with essential thrombocythemia, and 23 with idiopathic myelofibrosis). RESULTS Microsatellite mapping identified a 9pLOH region that included the Janus kinase 2 (JAK2) gene. In patients with 9pLOH, JAK2 had a homozygous G-->T transversion, causing phenylalanine to be substituted for valine at position 617 of JAK2 (V617F). All 51 patients with 9pLOH had the V617F mutation. Of 193 patients without 9pLOH, 66 were heterozygous for V617F and 127 did not have the mutation. The frequency of V617F was 65 percent among patients with polycythemia vera (83 of 128), 57 percent among patients with idiopathic myelofibrosis (13 of 23), and 23 percent among patients with essential thrombocythemia (21 of 93). V617F is a somatic mutation present in hematopoietic cells. Mitotic recombination probably causes both 9pLOH and the transition from heterozygosity to homozygosity for V617F. Genetic evidence and in vitro functional studies indicate that V617F gives hematopoietic precursors proliferative and survival advantages. Patients with the V617F mutation had a significantly longer duration of disease and a higher rate of complications (fibrosis, hemorrhage, and thrombosis) and treatment with cytoreductive therapy than patients with wild-type JAK2. CONCLUSIONS A high proportion of patients with myeloproliferative disorders carry a dominant gain-of-function mutation of JAK2.
Understanding Engagement: How Team Engagement Drives Performance

There is a growing consensus among academic and practitioner communities alike that building an engaged workforce is key to enhancing employee wellbeing and organizational performance. Despite the growing body of research into the structure, antecedents and consequences of engagement, there is still no agreed definition of engagement, and the focal point of engagement varies considerably across studies. In this paper we report on two studies that examined the relationships among the different components of engagement, as well as how each of these components contributed to performance-related outcomes. Drawing on Hart and Cooper's (2001) organizational health framework, we predicted that transformational leadership and organizational climate would contribute positively to different components of engagement, and that employees' perceptions of group affective tone would predict performance outcomes. In Study 1, we drew on two waves of longitudinal data obtained from 318 academic staff to investigate the role of engagement in determining the quality of teaching and research. In Study 2, we drew on data obtained from 46,706 employees and 263,977 students, from 1,020 government schools, to examine how transformational leadership and an engaged workforce contributed to the socio-emotional outcomes of students. Results demonstrated that employees' experiences of the positive emotional tone of their teams was the only indicator of engagement that consistently predicted performance. Moreover, organizational climate was a strong predictor of an engaged workforce.
Electrocaloric Effect In Relaxor Ferroelectric Ceramics and Single Crystals

In the last two decades, the electrocaloric (EC) effect which is associated to the temperature (thetas) dependence of the macroscopic polarization P(E,thetas) under electric field E has been spasmodically studied in ferroelectric materials in order to find an alternative to the classical refrigeration devices using freon. Basically, large electrocaloric temperature variation Deltathetas originates from electric field-induced phase transition at the Curie temperature, but temperature changes of the sample are difficult to measure and depend on the experimental conditions. In this paper, the EC effect has been quantified directly and precisely by measuring the thermal energy exchanged under isothermal conditions using a modified Differential Scanning Calorimetry (DSC) apparatus. The DSC technique allowed comparing the EC properties in the vicinity of ferroelectric-paraelectric phase transition in both high-dielectric-constant pyroelectric ceramics and single crystals of the same formulation. It is showed that although having a much higher pyroelectric coefficient, single crystals exhibit very close ECE compared to ceramics. Indeed, the ECE is around 0.2J/g for an electric field step of 2.5kV/mm for both crystals and ceramics, but the pyroelectric coefficient of <111> single crystal is found to be around 1300 pC.m2.K-1where it is limited to 750 pC.m-2.K-1 for ceramic. This observation is discussed in the paper.
A particle swarm optimization for the quay crane scheduling problem with non-interference constraints

The quay crane scheduling problem discussed in this paper is to schedule a fixed number of cranes in order to load and unload containers into and from a vessel considering interference between cranes. This study proposes a particle swarm optimization (PSO) algorithm to obtain solutions, and the performance of it is assessed by comparing with the lower bound which is calculated from CPLEX by relaxing the noninterference constraints.
Who is Key? - Value Adding Users in Enterprise Social Networks

Whereas the use of Enterprise Social Networks (ESN) is a pervasive topic in research and practice, both parties are still struggling to come to a better understanding of the role and impact of ESN in and on knowledge-intensive corporate work. As a part of this phenomenon, employees who communicate their knowledge in ESN helping other users to do their daily work play a decisive role. We need to come to a better understanding of the role and behaviour of such value adding users. This is a prerequisite, for example, for understanding knowledge support hubs or for enabling more effective internal information and knowledge sharing. Against this background, we investigate the structural characteristics of value adding users in ESN using qualitative text analysis and Social Network Analysis. Based on a large scale dataset of a global consulting company using the ESN Yammer.com we analyse the social relationships of value adding users. We confirm their significant position and draw conclusions for research and practice.
Improving Bound Propagation

This paper extends previously proposed bound propagation algorithm [11] for computing lower and upper bounds on posterior marginals in Bayesian networks. We improve the bound propagation scheme by taking advantage of the directionality in Bayesian networks and applying the notion of relevant subnetwork. We also propose an approximation scheme for the linear optimization subproblems. We demonstrate empirically that while the resulting bounds loose some precision, we achieve 10-100 times speedup compared to original bound propagation using a simplex solver.
MicroRNA-218 Enhances the Radiosensitivity of Human Cervical Cancer via Promoting Radiation Induced Apoptosis

We previously reported frequent loss of microRNA-218 (miR-218) in cervical cancer, which was associated with tumor progression and poor prognosis. As microRNAs were found invovled in the regulation of radiosensitivity in various human cancers, we therefore aim to investigate the effects of miR-218 on radiosensitivity of cervical cancer in the present study. The clonogenic survival assay demonstrated that loss of miR-218 could predict radioresistance in the primary cervical cancer cells (R2=0.6516, P<0.001). In vitro, abundant miR-218 increased the radiosensitivity in cervical cancer cells (P<0.001 for HeLa, P=0.009 for SiHa, P=0.016 for C33A and P=0.01 for CaSki). Upregulation of miR-218 significantly enhanced the radiation-induced apoptosis, which was further enhanced by the combination of miR-218 overexpression and radiation In xenograft growth assay, combination of miR-218 overexpression and radiation notably induced cellular apoptosis and suppressed tumor growth. In conclusion, we demonstrated that miR-218 resensitized cervical cancer cells to radiation via promoting cellular apoptosis. Moreover, we proved that miR-218 as a potent predictor of radiosensitivity in cervical cancer, especially for those patients with loss of miR-218.
Correctness of a Mechanism for Precise Nested Processing of Interrupts in Pipelined Designs

This paper speciies an interface which permits to design the software protocol and the hardware support of an interrupt mechanism independently. Thereby, it is also studied how preciseness and nested processing impact the resulting constraints, and how they can be implemented in a pipelined design. Furthermore, the paper pinpoints the major problems involved in the design of a correct pipelined interrupt mechanism, and deenes the status data required. It further provides provably correct solutions for freezing the pipeline and for resuming the program.
Localization of Access Points Based on Signal Strength Measured by a Mobile User Node

The issue of locating access points (APs) in a building is investigated in detail in this paper. The signal strength of beacon frames from a selected AP is measured at multiple positions, and the location of the selected AP is estimated based on the distance information inferred from the measured signal strength and a modified version of the Hata-Okumara model. A strategy is proposed to select three measurement points to improve localization accuracy for a selected target AP when signal strength is measured at multiple positions. The accuracy of the proposed scheme is evaluated through experiment.
Feed intake and performance of growing lambs raised on concentrate-based diets under cafeteria feeding systems.

Two trials were undertaken to study the effects of cafeteria feeding systems on the feed intake, animal performance and carcass characteristics of growing lambs. Trial 1 was designed to compare conventional and cafeteria feeding systems in terms of the growth of individually reared lambs. For this assay, 26 weaned Merino lambs (15.5 ± 0.20 kg live weight) were assigned to three dietary treatment groups: (1) a control group fed barley straw and commercial concentrate under a conventional feeding system, (2) group W100S, fed soya-bean meal, whole barley grain and a mineral-vitamin supplement under a cafeteria feeding system, and (3) group W100S-T, fed as in the W100S treatment but allowing the lambs an initial training period so they could learn to identify a number of feeds. The feeding system had no significant effect ( P>0.05) on either average daily live-weight gain, carcass weight, or carcass conformation. The food conversion ratio was lower ( P < 0.05) for the cafeteria-reared animals (2.9 ± 0.16 v. 2.5 ± 0.08 g dry-matter intake per g average daily gain) than those of the control group. This might be related to the higher crude protein intake seen in the cafeteria groups (150 ± 5.6 v. 208 ± 12.5 g per animal per day; P < 0.001). In trial 2, cafeteria and conventional feeding system were compared in terms of the growth of feedlot lambs. Two hundred weaned Merino lambs (13.1 ± 0.10 kg) were divided into two experimental groups: (1) a control group, offered commercial concentrate and barley straw, and (2) a cafeteria group fed the same diet as W100ST in trial 1. The average daily gain (282 ± 5.8 and 309 ± 6.5; P < 0.01) was greater in the cafeteria than in the control group. Whereas neither carcass conformation nor fatness were affected by the feeding system, the dressing percentage was slightly higher ( P>0.001) in the conventional than in the cafeteria system lambs.The use of cafeteria systems for fattening lambs can improve the feed conversion efficiency and body growth rate over those achieved with conventional feeding systems, although the crude protein intake in these systems seems to be in excess of requirements.
Dynamic Simulating of Robotic Joint Driven by Lowered Hydraulic Pressure

An original robotic joint is introduced, in which an elastomeric bellows with pliability is driven by lowered hydraulic pressure. A manipulator can be befittingly made of the joint. The structure of the joint are described, and the mathematical expression is established according to an analysis of the static force, between the angular displacement of the joint and the pressure inside the bellows. The integral equation is also found between holistic bending angle of the bellows and its inner volume, and the dynamic model between the angular displacement of the joint and time variable is presented. The simulation of dynamics is further given from a demonstration. Theory model has been validated from the outcome of the simulation: the angular displacement has been damply oscillating at system equipoise point at a maximal hydraulic pressure, and its error is less, compared the displacement of equipoise point with the static maximal angular displacement
An SCA-based Approach for Social and Pervasive Communications in Home Environments

In home environments, the customization of applications according to in- habitant's information requires the integration of heterogenous event sources and services. To do that, the events have to be collected and processed, and the volatile services identified and used. The information collection and ser- vice access have to be done considering the identity of users in order to avoid unexpected behaviors in the customized applications or unauthorized accesses. However, although the event flow, service mobility and user iden- tity are key issues in the customization of applications, existing solutions fail to deal with them in a simple and flexible way. Therefore, in this paper we propose to face these issues by combining the SCA (Service Component Architecture) standard, micro-blogging services and discovery technologies. In particular, we benefit from the SCA extensibility to introduce support for social communications enabling asynchronous event exchange (via Twitter), and for pervasive communications to deal with mobility (by means of stan- dard discovery protocols such as UPnP). Furthermore, we exploit the intents from SCA in order to allow user identification in home environments. We bring the new communications and user identity support into the F RA SCATI, a platform for SCA applications. We illustrate our work with a smart home scenario requiring the integration of heterogeneous technologies.
De invloed van Europese verzorgingsstaten op financiële overdrachten binnen families

The role of European welfare states in intergenerational monetary transfers: A micro-level perspective This article integrates sociological and economical theory to provide a compre-hensive explanation for why parents send money to particular children, and tests more explicit hypotheses on how differences in welfare state provisions can explain divergent patterns between countries. The spending on various welfare domains as a percentage of Gross Domestic Product is used to determine whether intergenerational solidarity is shaped by welfare state provisions. We use data from the Survey of Health and Retirement in Europe (SHARE) to analyse the influence of welfare state provisions on the likelihood of intergenerational transfers in ten European countries. The results indicate that parental resources and reciprocity expectations as well as children’s needs are important determinants of monetary transfers. Although differences between countries are found, they do not seem to justify the distinct division between “the three worlds of welfare” often used in sociological work.
Obstacle detection with 3D camera using U-V-Disparity

Obstacle detection has been one of the most critical features for reliable driving scene analysis. This paper presents an approach for an automatic obstacle detection system. The proposed system makes use of depth information generated by a 3D camera mounted on the front of a moving vehicle. Obstacles projected as line features in the V-U-Disparity map can be extracted to detect the road surface and obstacles. A Steerable Filter is employed at an early stage to dramatically lower the noise. Furthermore, a modified Hough Transform is placed to extract the straight line feature from the depth map with improved accuracy. The system is robust in dealing with fault detection caused by roadside features which is a commonly shared problem in many other obstacle detection approaches.