Miracle-dz/UniFAR-FTUs huggingface dataset:
Optimization for Maximizing Sum Secrecy Rate in SWIPT-Enabled NOMA Systems

In this paper, we study secrecy simultaneous wireless information and power transfer (SWIPT) in downlink non-orthogonal multiple access (NOMA) systems comprising a base station (BS), multiple information receivers (IRs), and multiple energy receivers (ERs) that have potential to wiretap the IRs. The goal of this paper is to maximize the sum secrecy rate (SSR) of the system subject to the individual IR’s minimum data rate requirement and the individual ER’s minimum harvested energy requirement. The corresponding problem involves resource allocation via max-min function, which is non-convex and difficult to solve directly. In order to tackle this, we first transform the original non-convex problem to a sequence of convex sub-problems which can be solved simultaneously. Hence, a closed-form solution of the optimal power allocation policy is derived based on the Karush-Kuhn-Tucker conditions. Numerical results validate the theoretical findings and demonstrate that the significant performance gain over the orthogonal multiple access scheme in terms of SSR can be achieved by the proposed algorithm in a SWIPT-enabled NOMA system.
Alignment of EphA4 and ephrin‐B2 expression patterns with developing modularity in the lateral cortex of the inferior colliculus

In the multimodal lateral cortex of the inferior colliculus (LCIC), there are two neurochemically and connectionally distinct compartments, termed modular and extramodular zones. Modular fields span LCIC layer 2 and are recipients of somatosensory afferents, while encompassing extramodular domains receive auditory inputs. Recently, in developing mice, we identified several markers (among them glutamic acid decarboxylase, GAD) that consistently label the same modular set, and a reliable extramodular marker, calretinin, (CR). Previous reports from our lab show similar modular–extramodular patterns for certain Eph–ephrin guidance members, although their precise alignment with the developing LCIC neurochemical framework has yet to be addressed. Here we confirm in the nascent LCIC complementary GAD/CR‐positive compartments, and characterize the registry of EphA4 and ephrin‐B2 expression patterns with respect to its emerging modular–extramodular organization. Immunocytochemical approaches in GAD67‐GFP knock‐in mice reveal patchy EphA4 and ephrin‐B2 domains that precisely align with GAD‐positive LCIC modules, and are complementary to CR‐defined extramodular zones. Such patterning was detectable neonatally, yielding discrete compartments prior to hearing onset. A dense plexus of EphA4‐positive fibers filled modules, surrounding labeled ephrin‐B2 and GAD cell populations. The majority of observed GABAergic neurons within modular boundaries were also positive for ephrin‐B2. These results suggest an early compartmentalization of the LCIC that is likely instructed in part through Eph–ephrin guidance mechanisms. The overlap of developing LCIC neurochemical and guidance patterns is discussed in the context of its seemingly segregated multimodal input–output streams.
Distinct roles of prefrontal and parietal areas in the encoding of attentional priority

Significance During search, information about the similarity of stimuli to the searched-for target is thought to be encoded in spatial priority maps, which signal the behavioral relevance of stimuli across the visual field. The frontal eye field (FEF) and the lateral intraparietal area (LIP) have both been reported to hold priority maps, but it is unknown whether the two areas have identical or distinct roles in encoding attentional priority. Here, we show that whereas LIP responses reflect the similarity of stimuli to the target, FEF responses integrate perceptual relevance with oculomotor decisions. Moreover, although feature-based attention effects are stronger within FEF, they emerge at similar latencies in subpopulations of the two areas, implying parallel processing of priority information. When searching for an object in a crowded scene, information about the similarity of stimuli to the target object is thought to be encoded in spatial priority maps, which are subsequently used to guide shifts of attention and gaze to likely targets. Two key cortical areas that have been described as holding priority maps are the frontal eye field (FEF) and the lateral intraparietal area (LIP). However, little is known about their distinct contributions in priority encoding. Here, we compared neuronal responses in FEF and LIP during free-viewing visual search. Although saccade selection signals emerged earlier in FEF, information about the target emerged at similar latencies in distinct populations within the two areas. Notably, however, effects in FEF were more pronounced. Moreover, LIP neurons encoded the similarity of stimuli to the target independent of saccade selection, whereas in FEF, encoding of target similarity was strongly modulated by saccade selection. Taken together, our findings suggest hierarchical processing of saccade selection signals and parallel processing of feature-based attention signals within the parietofrontal network with FEF having a more prominent role in priority encoding. Furthermore, they suggest discrete roles of FEF and LIP in the construction of priority maps.
Low-Complexity Design of Decode-Forward Relaying in Massive MIMO Heterogeneous Networks

We investigate the impact of massive MIMO on the uplink transmission design for a heterogeneous network (HetNet) where multiple users communicate with a macro-cell base station (MCBS) through multiple small-cell BSs (SCBSs). We develop a new scheme in which the SCBSs deploy decode-forward (DF) relaying, multi-layer binning, and time division transmission, where the number of binning layers (resp. time slots) is equal to the number of SCBSs (resp. users). The MCBS separately and sequentially decodes the binning indices and each user's message that belongs to those indices. The proposed scheme is simpler than schemes with common transmission of all users' messages by each SCBS and joint decoding at the MCBS: 1) the codebook size and the decoding complexity increase linearly with the number of users instead of exponentially, 2) every transmission-decoding step is similar to the conventional point-to-point communication, and 3) the same set of time slot durations at all SCBSs is sufficient to achieve the maximum rate. Despite its simplicity, the proposed scheme is effective since it achieves the same rate performance of more complex schemes with joint decoding.
The influence of peer mentoring on critical care nursing students’ learning outcomes

Purpose The purpose of this paper is to explore the influence of peer mentoring on critical care nursing students’ learning outcomes in critical care units. Design/methodology/approach A qualitative exploratory research design was used to conduct the study. Ten critical care nursing students were recruited from critical care units in the five private and two public hospitals. Descriptions of their experiences were gained through individual face-to-face interviews. Findings The study reinforces peer mentoring as a vital strategy in helping the critical care nursing students to attain their learning outcomes. However, peer mentoring was not consistent in all hospitals and there were no structured support systems to ensure that peer mentoring was formalized. Making peer mentoring a vital component in the registered nurses core competencies would enable efficiency and guarantee the viability of peer mentoring. Research limitations/implications Mentors for the critical care nursing students were not included in the study. Practical implications The study identified a need for incorporating a formalized mentorship programme into the core competencies of all qualified critical care nurses, the unit mentor to familiarise themselves with the prescribed learning objectives of the critical care nursing student and an allocation of supernumerary time for the critical care nursing student and mentors to allow for formal mentoring responsibilities to take place. Originality/value The study reinforces peer mentoring as a vital strategy in helping the critical care nursing students to attain their learning outcomes and conscietises registered nurses of their responsibility as mentors.
All That Glitters Is Not Grit: Three Studies of Grit in University Students

The present research looked at the importance of the concept of grit in University students based on a mixed-method approach. Study 1 comprised 440 University students. All were given the Grit Scale, the Perceived Stress Scale, the short Warwick–Edinburgh Mental Well-being Scale, the Office of National Statistics Well-being items and the Self-Control Scale. Levels of grit were significantly higher in female students, older students and postgraduates. Grit correlated highest with self-control. Study 2 looked at 340 University students. In addition to measuring self-control, mental well-being and grit, measures of resilience and mindsets were also added. A construct validity test of the Grit Scale showed that high grit scorers had significantly higher levels of self-control and mental well-being, were more resilient and were more likely to have a more growth oriented mindset. Grit varies with age and is most closely associated with the concept of self-control. The third study was a qualitative investigation with 10 successful graduates. Semi-structured interviews were coded using thematic analysis. Three broad themes emerged. The first, Passion and Perseverance, included themes of having short and long terms goals, resilience, dedication, and endurance. The second, Self-Control, included time management, self-awareness, prioritizing tasks and knowing strengths and weaknesses. The third theme identified was Positive Mindsets. This included having a positive attitude toward learning, the importance of feedback and constructive criticism and that success is not materialistic. The qualitative research has helped “unpack” concepts from the grit research and may enable University tutors to guide students better. Though these studies were only conducted in one English University, they have been stepping stones in our quest to discover what are the most important factors in determining student academic success? The development and piloting of our new Uni-Stride Scale, is the next step in this process.
The ACO-NM algorithm for controller tuning for an inverted cart-pendulum

The control of a cart-pendulum system consists to swing the pendulum up and to maintain it in its upright position. In many publications, one controller is used for the swing-up action and one for the stabilization mode. Both controllers are usually tuned separately and frequently by trial-and-error, as is the handling of system constraints. This paper proposes the simplified Ant Colony Optimization algorithm combined to a constrained Nelder-Mead method (ACO-NM) for cart-pendulum control structure tuning. A new cost function is proposed to manage cart-rail length. Simulation and experimental results confirm the efficiency of the ACO-NM algorithm to optimize the control structure for four cart-pendulum parameter sets.
Fast and Precise High-Speed Channel Modeling and Optimization Technique Based on Machine Learning

This letter proposes a fast and precise high-speed channel modeling and optimization technique based on machine learning algorithms. Resistance, inductance, conductance, and capacitance (RLGC) matrices of a high-speed channel are precisely modeled by design-of-experiment method and artificial neural network. In addition, an optimal channel design, which achieves minimum channel loss and crosstalk, is investigated within short time by a genetic algorithm. The performance of the proposed technique is validated by simulations up to 20 GHz.
Online dating is associated with sex addiction and social anxiety

Background and aims There is an increasing use of the Internet for dating and sexual purpose. The aim of this study was to investigate the contribution of social anxiety and sensation seeking to ratings of sex addiction among those who use dating Internet sites. Methods A total of 279 participants (128 males and 151 females), with overall mean age being 25 years (SD = 2.75) and age range of 18–38, answered questionnaires on the Internet. Questionnaires included demographic details, Leibowitz Social Anxiety Scale, Zuckerman Sensation Seeking Scale, and Sexual Addiction Screening Test (SAST). Results The users of Internet-dating applications showed higher scores on the SAST than non-users. Second, participants who had low scores of sex addiction had lower social anxiety scores than the participants with high scores of sexual addiction. There was no difference in sensation-seeking scores between participants with low and high scores of sexual addiction. Discussion and conclusions The results of this study indicate that social anxiety rather than sensation seeking or gender is a major factor affecting the use of Internet-dating applications for obtaining sexual partners.
TIP: A Web Server for Resolving Tumor Immunophenotype Profiling.

: Systematically tracking the tumor immunophenotype is required to understand the mechanisms of cancer immunity and improve clinical benefit of cancer immunotherapy. However, progress in current research is hindered by the lack of comprehensive immune activity resources and easy-to-use tools for biologists, clinicians, and researchers to conveniently evaluate immune activity during the "cancer-immunity cycle. " We developed a user-friendly one-stop shop web tool called TIP to comprehensively resolve tumor immunophenotype. TIP has the capability to rapidly analyze and intuitively visualize the activity of anticancer immunity and the extent of tumor-infiltrating immune cells across the seven-step cancer-immunity cycle. Also, we precalculated the pan-cancer immunophenotype for 11,373 samples from 33 The Cancer Genome Atlas human cancers that allow users to obtain and compare immunophenotype of pan-cancer samples. We expect TIP to be useful in a large number of emerging cancer immunity studies and development of effective immunotherapy biomarkers. TIP is freely available for use at http://biocc.hrbmu. edu.cn/TIP/. SIGNIFICANCE: TIP is a one-stop shop platform that can help biologists, clinicians, and researchers conveniently evaluate anticancer immune activity with their own gene expression data.See related commentary by Hirano, p. 6536.
High-Resolution Remote-Sensing Image Registration Based on Angle Matching of Edge Point Features

Remote-sensing image registration is an important prerequisite for many remote-sensing applications. The accuracy, efficiency, and automatic degree of registration have direct impacts on follow-up applications. With the improving of remote-sensing resolution, the size and the data amount of remote-sensing image are constantly increasing. Meanwhile, with the development of remote-sensing application, the performance of registration is also put forward increasing requirement. Therefore, this paper proposes an automatic and fast image registration method based on the angle matching of edge point features (EPFs). First, the original image is transformed by the Haar wavelet to get the approximate image to improve the registration speed. Second, edges in different source images are extracted by different edge detectors. Then, edge line features are transformed into EPFs to get accurate positioning and stable features. Third, the initial matching point pairs (MPPs) are determined by the ratio—the minimum angle to the second minimum angle between feature vectors of EPFs—which is less than a threshold. Fourth, in order to enhance the registration accuracy, the random sample consensus is improved by adding the quality constraint condition to delete error MPPs. Finally, the block thought is used to uniformly choose MPPs to calculate the affine transform parameters, which avoids the local optimal problem and further improves the registration accuracy. Multiple high-resolution remote-sensing datasets of registration experimental results indicate that the proposed method is fast implemented and has high accuracy and effectiveness in processing efficiency.
Treewidth-Two Graphs as a Free Algebra

We give a new and elementary proof that the graphs of treewidth at most two can be seen as a free algebra. This result was presented last year at MFCS and was proved through an elaborate analysis of the structure of K4-free graphs, ultimately reproving the well-known fact that the graphs of treewidth at most two are precisely those excluding K4 as a minor. Our new proof is based on a confluent and terminating rewriting system for treewidth-two graphs and does not involve graph minors anymore. The new strategy is simpler and robust in the sense that it can be adapted to subclasses of treewidth-two graphs. It could also be amenable to handle graphs of larger treewidth, where the excluded minors are typically unknown.
Capturing Electrocardiogram Signals from Chairs by Multiple Capacitively Coupled Unipolar Electrodes

A prototype of an electrocardiogram (ECG) signal acquisition system with multiple unipolar capacitively coupled electrodes is designed and experimentally tested. Capacitively coupled electrodes made of a standard printed circuit board (PCB) are used as the sensing electrodes. Different from the conventional measurement schematics, where one single lead ECG signal is acquired from a pair of sensing electrodes, the sensing electrodes in our approaches operate in a unipolar mode, i.e., the biopotential signals picked up by each sensing electrodes are amplified and sampled separately. Four unipolar electrodes are mounted on the backrest of a regular chair and therefore four channel of signals containing ECG information are sampled and processed. It is found that the qualities of ECG signal contained in the four channel are different from each other. In order to pick up the ECG signal, an index for quality evaluation, as well as for aggregation of multiple signals, is proposed based on phase space reconstruction. Experimental tests are carried out while subjects sitting on the chair and clothed. The results indicate that the ECG signals can be reliably obtained in such a unipolar way.
UAV-aided Large-scale Map Building and Road Extraction for UGV

Due to the limited visual field of UGV, it is difficult to detect the accessible zone in a wide range of area in real time. This paper proposes a UAV-aided autonomous road network construction method where roads are previously unknown for UGV navigation. First, SIFT and RANSAC algorithms are applied to obtain the homography of UAV sequential images, through which these images are stitched to a large-scale map. Next, least square fitting algorithm and RDP algorithm are applied to extract initial road area and then obtain road network suitable for UGV navigation by topological processing and skeleton extraction. The experiments show that this UAV-aided method is effective in generating a large-scale road network map for UGV driving through unknown environment without human intervention.
Team Sport in the Workplace? A RE-AIM Process Evaluation of ‘Changing the Game’

Background The workplace is a priority setting to promote health. Team sports can be an effective way to promote both physical and social health. This study evaluated the potential enablers and barriers for outcomes of a workplace team sports intervention programme ‘Changing the Game’ (CTG). This study was conducted in a FTSE 100 services organisation. This process evaluation was conducted using the RE-AIM framework. Methods A mixed methods approach was used. Data were collected from the participants in the intervention group prior to, during and at the end of the intervention using interviews (n = 12), a focus group (n = 5), and questionnaires (n = 17). Organisational documentation was collected, and a research diary was recorded by the lead author. The evidence collected was triangulated to examine the reach, efficacy, adoption, implementation and maintenance of the programme. Data was assessed through template analysis, and questionnaire data were analysed using multiple regression and a series of univariate ANOVAs. Results CTG improved VO2 Max, interpersonal communication, and physical activity behaviour (efficacy) over 12-weeks. This may be attributed to the supportive approach adopted within the design and delivery of the programme (implementation). Individual and organisational factors challenged the adoption and maintenance of the intervention. The recruitment and communication strategy limited the number of employees the programme could reach. Conclusion The process evaluation suggests addressing the culture within workplaces may better support the reach, adoption and maintenance of workplace team sport programmes. Future research should consider investigating and applying these findings across a range of industries and sectors.
An Energy-Efficient Approach Towards Power Allocation in Non-Orthogonal Multiple Access Full-Duplex AF Relay Systems

An optimization problem for non-orthogonal multiple access full-duplex (FD) amplify-and-forward relay system is formulated to maximize the system energy efficiency, subject to a total transmit power. By introducing a variable transformation, the original non-convex fractional problem is transformed into a tractable one via successive convex approximation approach and Dinkelbach's method. Further, the near-optimal solution is obtained through Lagrangian dual decomposition. Numerical results show that the proposed algorithm in FD mode significantly outperforms conventional orthogonal multiple access and sum rate maximization schemes.
The Development of the Piezoelectric Driven Micro-Positioning Stage Controller using DSP

Due to the advantages of high resolution, simple structure and small size, the piezoelectric driven micro-positioning stage has been widely used in the field of IC manufacturing and cell operation. However, it is difficult to deal with the nonlinear characteristics, such as hysteresis characteristic. And the traditional hysteresis compensation controller cannot meet the accuracy requirements and response speed of micro-positioning stage system. In this paper, by analyzing the model of the piezoelectric micro-positioning stage, the EUPI inverse hysteresis model (EUPI-IM) is used to compensate the internal hysteresis phenomena of piezoelectric driven micro positioning stage. In order to implement the proposed control algorithm, a DSP based embedded controller is designed and developed. TMS320F2812 is chosen to be the main controller. The hardware circuit and software program are designed and tested. Experiments show effectiveness of the proposed algorithm and the designed embedded controller. The average static tracking error ratio of EUPI-IM controller is about 2.86%. Thus, this method achieves a good control effect.