Miracle-dz/UniFAR-FTUs huggingface dataset:
Women in Power? Examining Gender and Promotion in Policing Through an Organizational Perspective

Women bring important strengths to the field of policing, such as communication skills, the ability to lead teams, as well as the ability to coach and nurture subordinates. Despite these contributions, the rate of women entering policing has stagnated in recent years, and the percentage of women in supervisory, command, and leadership positions remains low. To explain this, we use an organizational structure perspective to explore how characteristics of police agencies (e.g., department size, officer demographics, and formalization) may influence the promotion of women to leadership positions. We make suggestions regarding hiring and retention and provide recommendations for further research.
Circular Economy of Construction and Demolition Waste: A Literature Review on Lessons, Challenges, and Benefits

Conventionally, in a linear economy, C&D (Construction and Demolition) waste was considered as zero value materials, and, as a result of that, most C&D waste materials ended up in landfills. In recent years, with the increase in the awareness around sustainability and resource management, various countries have started to explore new models to minimize the use of limited resources which are currently overused, mismanaged, or quickly depleting. In this regard, the implementation of CE (Circular Economy) has emerged as a potential model to minimize the negative impact of C&D wastes on the environment. However, there are some challenges hindering a full transition to CE in the construction and demolition sectors. Therefore, this review paper aims to critically scrutinize different aspects of C&D waste and how CE can be integrated into construction projects. Reviewing of the literature revealed that the barriers in the implementation of CE in C&D waste sectors fall in five main domains, namely legal, technical, social, behavioral, and economic aspects. In this context, it was found that policy and governance, permits and specifications, technological limitation, quality and performance, knowledge and information, and, finally, the costs associated with the implementation of CE model at the early stage are the main barriers. In addition to these, from the contractors’ perspective, C&D waste dismantling, segregation, and on-site sorting, transportation, and local recovery processes are the main challenges at the start point for small-scale companies. To address the abovementioned challenges, and also to minimize the ambiguity of resulting outcomes by implementing CE in C&D waste sectors, there is an urgent need to introduce a global framework and a practicable pathway to allow companies to implement such models, regardless of their scale and location. Additionally, in this paper, recommendations on the direction for areas of future studies for a reduction in the environmental impacts have been provided. To structure an effective model approach, the future direction should be more focused on dismantling practices, hazardous material handling, quality control on waste acceptance, and material recovery processes, as well as a incentivization mechanism to promote ecological, economic, and social benefits of the CE for C&D sectors.
Reconstruction of Fibroin Nanofibers (FNFs) via Electrospinning: Fabrication of Poly(vinyl alcohol)/FNFs Composite Nanofibers from Aqueous Solution

Fibroin nanofibers (FNFs) achieved from physical treated silk can keep its original crystal structure, showing excellent mechanical properties, however, processing the FNFs into fibers is still a challenge. Herein, a brand-new environmentally friendly approach is proposed to manufacture FNFs-based composite nanofibers. The water-soluble polymer, poly(vinyl alcohol) PVA, was applied to increase the viscoelasticity of the spinning dope, and the content of FNFs can reach up to 20 wt%. The established phase image of spinning suggested that the concentrations ranging from 6 wt% to 8 wt% are premium to achieving relatively homogenous FNFs/PVA nanofibers. Random fibers were deposited on a fixed collector, while the fiber orientation intensity increased with the rotational speed of drum and started decreasing after 12 m/s. The mechanical properties of the composite nanofibers showed the similar tendency of variation of fiber orientation. In addition, chemical changes, crystallinity, and thermal properties of the composite nanofibers were further clarified by means of FTIR, DSC, and TG. As a result, high FNFs contained nanofibers with excellent thermal properties were created from an aqueous solution. This study is the first original work to realize the spinnability of FNFs, which provides a new insight of the FNFs.
Application of UG/WAVE Technology in the Design of Automobile Front Axle

In this paper, principles and methods of UG / WAVE technology and the main function of WAVE are introduced, designs of some parts in the automobile front axle illustrates the steps and methods of UG / WAVE top-down modeling. Automatic update feature of the technology can shorten the design cycle, greatly reduce the duplication of design, make the design and management of product is very convenient and efficient, improve the market competitiveness of enterprise, and full play to concurrent engineering advantages.
Fault Diagnosis Model Based on Feature Compression with Orthogonal Locality Preserving Projection

Based on feature compression with orthogonal locality preserving projection(OLPP),a novel fault diagnosis model is proposed in this paper to achieve automation and high-precision of fault diagnosis of rotating machinery.With this model,the original vibration signals of training and test samples are first decomposed through the empirical mode decomposition(EMD),and Shannon entropy is constructed to achieve high-dimensional eigenvectors.In order to replace the traditional feature extraction way which does the selection manually,OLPP is introduced to automatically compress the high-dimensional eigenvectors of training and test samples into the low-dimensional eigenvectors which have better discrimination.After that,the low-dimensional eigenvectors of training samples are input into Morlet wavelet support vector machine(MWSVM) and a trained MWSVM is obtained.Finally,the low-dimensional eigenvectors of test samples are input into the trained MWSVM to carry out fault diagnosis.To evaluate our proposed model,the experiment of fault diagnosis of deep groove ball bearings is made,and the experiment results indicate that the recognition accuracy rate of the proposed diagnosis model for outer race crack、inner race crack and ball crack is more than 90%. Compared to the existing approaches,the proposed diagnosis model combines the strengths of EMD in fault feature extraction,OLPP in feature compression and MWSVM in pattern recognition,and realizes the automation and high-precision of fault diagnosis.
Wide-Band Network Modeling of Interacting Inductive Irises and Steps

Methods of field and network theory are jointly applied to the problem of deriving wide-band models for interacting inductive irises and steps in standard and oversize lossless rectangular guides. The resulting equivalent network is a cascade of lumped multiports, described by means of their reactance matrix, given in the canonical Foster's form, and of several parallel transmission lines, connecting the interacting discontinuities. The required frequency band and the accuracy of the model can be prescribed at will. The features of the approach are: the solution of the field problem yields a reactance matrix with monotonic convergence properties; small matrices only need be manipulated; the frequency dependence is explicit, so that the field analysis need not be repeated at each frequency point; a true network model (and not a "spot frequency" equivalent circuit) is produced, which is prerequisite for exact synthesis.
Robust Control in Task Space for Redundant Manipulator

This paper presents a robust control law for a redundant robotic arm that manipulates an unknown load attached to its end effector. As it is considered that the robot manipulator may interact with the environment, the control law is expressed in terms of the operational space variables. An extended dynamic model of the robot, considering the uncertain load and intentional simplifications in the kinematic model, is presented for the control system design. The objective of the work is to develop, based in a sliding control mode, a robust motion control law featuring robustness in face of the above mentioned model uncertainties and simplifications, and to prove, with Lyapunov’s theory, the stability of the closed loop system. The kinematic redundancy of the manipulator is exploited to enhance the performance. It is shown, through simulations done on a 7-DOF KUKA LBR iiwa 14 R820 robot model, that the errors remain bounded when the box is following a trajectory even with different values of loads.
Establishing and Testing a Quantitative Measure for Evolving Third-Place Characteristics

Third places offer and promote social experiences beneficial for building interpersonal relationships. This study has two goals: 1) establish a scale that tests if an environment is characteristic of third place characteristics and 2) use this scale with four virtual environments (Facebook, Snapchat, Instagram, and Twitter) to test the proficiency of third place characteristics as representative of virtual third places. A research-informed scale was created and tested with a sample of 354 participants. Confirmatory factor analysis verified a nine-factor solution, with each subscale reporting acceptable reliability (range: .89 to .96). This scale was tested with 140 participants to verify if certain social media qualified as third places. MANOVAs revealed that Facebook adheres most closely to the majority of third place characteristics, followed by Snapchat, Instagram, and Twitter respectively. The proposed scale can be used with other virtual environments to measure if they qualify as third places.
Human body phantoms for evaluation of wearable and implantable antennas

For research and development of wearable and implantable antennas to be used for body-centric wireless communication systems, it is indispensable to evaluate interactions between the human body and the electromagnetic waves radiated from the antennas. In these investigations, instead of a real human body, numerical models or tissue-equivalent experimental phantoms are usually used. The present paper describes such numerical and experimental human body phantoms. (6 pages)
280 W output power single-ended amplifier using single-die GaN-FET for W-CDMA cellular base stations

A single-ended amplifier using a single-die GaN-FET was successfully developed for W-CDMA cellular base-station systems. The developed amplifier delivers a peak saturated output power of 280 W with a linear gain of 12.6 dB at a drain voltage of 48 V under 2.15 GHz 3GPP W-CDMA signal input. It is believed that the 280 W output power is the record output power in sigle-ended amplifiers at 2 GHz band. A high drain efficiency of 29% is also obtained at 8 dB power back off from the saturated output power.
Geometrical Analysis of Simple Contours Deposited by a 3D Printing Hexacopter

Current limitations in vertical and horizontal mobility for ground robots in 3D printing of medium to large-scale objects have recently led to the development of a 3D printing hexacopter testbed at the University of Texas at Austin. This testbed can ﬂy to a desired location and deposit polylactic acid on ﬂat surfaces. A previous study has shown the feasibility of this approach but has not yet quantiﬁed the testbed’s printing capabilities. In this paper, we quantify the printing capabilities. We print square contours of di ﬀ erent sizes and quantify the printed results based on their geometric dimensions. We also quantify the testbed’s trajectory tracking to assess the testbed’s positioning accuracy during printing. In quantifying the testbed, we lay the groundwork for using aerial robots in printing applications of medium to large-scale objects, such as concrete printing.
Energy Harvesting From Controlled Buckling of a Horizontal Piezoelectric Beam

A piezoelectric vibration energy harvester is designed to generate electricity under the weight of passing crowds. The piezoelectric beam buckles to a controlled extent when the device is stepped on. The device is a seven bar mechanism. The upper and lower bars as well as the lateral links are rigid. The middle horizontal beam is a bimorph piezoelectric beam. Damages to the piezoelectric beam are avoided by constraining its axial deformation. This constrain is implemented by limiting squeezing of the mechanism. When a person moves over the mechanism or steps off the devices it causes the bimorph to buckle or return to the unbuckled condition. The transitions result in vibrations of the piezoelectric beam and thus generate energy.In this paper, the energy harvester is analytically modeled. The electro-mechanical coupling and the geometric nonlinearities have been included in the model for the piezoelectric beam. The design criteria for the device are discussed. It is demonstrated that the device can be realized with commonly used piezoelectric patches and can generate hundreds of milliwatts of power. A three part beam is also investigated. The effect of design parameters on the generated power and required tolerances are illustrated.The proposed device could be implemented in the sidewalks producing energy from the weight of people passing over it. Other possible applications are portable smart phones chargers and shoe hill energy harvesting. Dance floor of a club is another applicable example for using this harvester. The main advantage of using horizontal configuration instead of a vertical arrangement is the ease of placement in the pavements. © 2014 ASME
Creation Capacity and Dispersion Capacity the Role of Opportunity to Learn in Knowledge Creation Performance

This article aimed to investigate the opportunity to learn into the capacity of creation (team orientation and learning) and the capacity of dissemination (memory and system orientation). The capacity of creation and dispersion can each increase practice and exploitation in the creation of knowledge. We use survey questionnaires to collect data from 145 members of IKAPI in Central Java. In this research, creation capacity and dispersion capacity are expected to increase knowledge creation performance. Providing opportunities for learning that is expected to be able to increase the creation capacity and dispersion capacity and potentially affect the increase in knowledge creation performance. This article provides information on the importance of providing opportunities to learn in developing and managing creation capacity and dispersion capacity that support the practice of exploration and exploitation and develop knowledge creation performance. In improving organizational competence it is important to provide learning opportunities as large as human resources so that they are able to provide accessibility to the exchange and creation of knowledge.
Optimized design of a TOF laser range finder based on time-correlated single-photon counting

A time-of-flight (TOF) laser range finder based on time-correlated single photon counting (TCSPC) has been developed. By using a Geiger-mode avalanche photodiode (G-APD) with the ability of detecting single-photon events and Time-to-Digital Converter (TDC) with picosecond resolution, a good linearity with 4.5 cm range precision can be achieved in the range of 1-10 m. This paper highlights a significant advance in improving the key parameters of this system, including the range precision and measurement dynamic range. In our experiments, it was found that both of the precision and the measurement dynamic range were limited by the signal to noise rate (SNR) and the inherent jitter of system. The range precision can be improved by enhancing the SNR of system. However, when the SNR is high enough, the main factors affecting the range precision will turn into the inherent jitter, which makes the range precision can not be improved infinitely. Moreover, the inherent jitter generated by pulsed laser and the signal processing module has been measured, and its influence on the system performance has also been discussed. Taking all of these factors into account, some optimized designs have been proposed to improve range precision and dynamic range simultaneously. The final experiment results show that, after all of these optimization designs, the range precision of system is better than 1.2 cm and the measurement dynamic range is enlarged to 54 m when the sampling time is as short as 1 ms, which is sufficient for many applications of 3D object recognition, computer vision, reverse engineering and virtual reality.
Global vaccination strategies in Modular Networks

We study the effect of vaccinating networks with different growing strategies, using various techniques that require the complete knowledge of the network. The goal is to restrain the epidemic before it spreads throughout the network and target the few key nodes that will help contain it. Our target networks are chosen to have relatively large modularity index and various immunization techniques are applied to them.
Risk Factors of Pulmonary Hypertension in Patients on Hemodialysis: A Single Center Study

Introduction Pulmonary hypertension (PH) is an underestimated cardiovascular consequence and a mortality predictor in patients on hemodialysis (HD). Thus, we studied its prevalence, risk factors, association with inflammation/oxidative stress, and cardiac changes in HD patients. Methods This was a single-center cross-sectional observational study conducted at a tertiary care hospital. Patients aged >18 years on hemodialysis for at least three months were included and divided into those with and without PH; patients with secondary causes for PH were excluded. Clinical characteristics, HD-related factors, lab parameters (C-reactive protein and malondialdehyde with thiol assay were used as markers of inflammation and oxidative stress, respectively), and echocardiography details were compared. PH was defined as a mean pulmonary artery pressure of >25 mmHg at rest, and it was further divided as mild (25–40 mmHg), moderate (40–60 mmHg), and severe (>60 mmHg). Results Of 52 patients, 28 patients had PH (mild 24, moderate 4, and none had severe PH) with prevalence of 54%. No difference was found in clinical characteristics, dialysis-related factors, biochemical parameters including inflammation (C-reactive protein; p=0.76), or oxidative stress (thiol; p=0.36 and MDA; p=0.46) between the groups. When compared to individuals without PH, HD patients with PH exhibited significantly more mitral regurgitation (p=0.002). Conclusion Hemodialysis patients have a high prevalence of PH. PH was significantly associated with the presence of mitral regurgitation on echocardiography. Our study did not find differences in traditional risk factors, HD-related factors, and inflammation/oxidative markers between the groups with and without PH.
Propulsive efficiency of a multilayer anisotropic fin in fluid–structure interaction

This study aims to evaluate the dynamic performances, in particular the drag and the lift forces, which are the two relevant parameters to quantify the propulsive efficiency of a fin. Some previous models are mostly either of discrete type or based on the behaviours of the organs of propulsion of certain marine cetaceans, and we use continuous models. Our work is mostly numerical and discusses the development of a continuous model in the framework of the fluid–structure interaction approach. To this end, we place ourselves in the frame reference attached to the foot of a swimmer. We use kinematics proposed by Read et al. (2003), including heaving and pitching. Indeed, the kinematics is expected to allow us, in the future, the development of new experimental protocol for measuring hydrodynamic parameters of a fin.
VOLTAGE STABILITY ANALYSIS USING CONTINUATION POWER FLOW UNDER CONTINGENCY

This paper presents the knowledge of a continuation power flow (CPF) analysis to be used in a voltage stability analysis (VSA) to regulate the power in huge systems. Prominent feature of the continuation power flow is that it remains well-conditioned at and around the critical point. As significance, divergence due to ill conditioning is not encountered at the critical point, even when solitary meticulousness computation is used. It begins with a few basic values of the process and leads to a critical stage. The quiescent attribute of this approach is that it ruins fit at the anticipated stage, even though a particular estimation is used. In this paper system voltage, active power losses, reactive power losses and voltage stability are analyzed using a continuation power flow algorithm with and without contingency under load changing condition.
A Wideband 9 GHz LC-VCO with Tail Current Source Array in 0.18-μm RF CMOS Process

A wideband 9 GHz LC-VCO with tail current source array based on TSMC 0.18-μm RF CMOS process is presented in this paper. After discussing the start-up conditions, the structure of tail current source array is utilized to lower the power consumption in high frequency bands and guarantee start-up at low frequency bands. Furthermore, to extend the frequency range, a 4-bit switched capacitor array is used. Based on our analysis, a NMOS cross-coupled VCO with 4-bit PMOS tail current source array is implemented. Post-simulation results show that the tuning range is from 6.372GHz to 9.154GHz and the phase noise at 1MHz offset is less than-110dBc/Hz in the entire tuning range. The operating current of the VCO core is from 8.24mA to 13.362mA in the entire tuning range under 1.8V supply voltage. And the area of the proposed VCO is 1177. 775μm × 577. 54μm, with two buffer stages and pads.
Complexity measurement of a project activity

Project managers very often describe their projects as simple or complex when discussing management issues. This indicates a practical acceptance that complexity makes a difference to the management of projects. The purpose of this paper is to propose a worker's skill-based metric for the complexity of a construction project activity using the concepts of functional decomposition and validate it. Based on a sample of 13 project activities from two construction projects, the empirical validation of the proposed metric using Spearman rank order coefficient exhibited a strong correlation between complexity of a project activity (CPA) and its completion time. The contribution of this paper is in identifying the influence of the skill of the worker(s) on the complexity of the project activity and as a support to project manager's intuitive understanding about the CPA. Moreover, the findings are applicable in assigning worker(s) to different project activities, based on their complexities.
Trajectoires et réseau des écrivains sur le Web. Construction de la notoriété et du marché

Mapping and analysing the network of sites and blogs in the online literature field unveils the existence of two strategies of web visibility: a majority of writers use the web as a mere marketing tool for self-promotion, while others use it as a networking resource and as a venue to experiment new forms of creative writing. The later constitute a dense network of interconnected writers seeking to move the boundaries of literature. They invent alternative models for digital journals and publishing ventures, which constructs visibility and a market to digital productions. Our research shows how a creative sector is reconfigured through digital technologies and how this forces the value chain of the book industry to transform its model. Also, as we reconstruct the trajectories of writing, the technical and social cost of this digital work and struggle for visibility are made visible.