Miracle-dz/UniFAR-FTUs huggingface dataset:
Impact of noise on amplitude-phase measurement precision and improvement of microwave receiver

This paper aims at the analysis and improvement of amplitude-phase measurement precision, on the basis of the signal model accompanied by additive noise and its classical probability density functions. In the presence of narrowband Gaussian noise, the relationship between measurement precision and output signal-to-noise ratio is discussed and analyzed in detail. The work presented in this paper includes an improved microwave-millimeter wave receiver, characterized. by DSBSC and low-IF quadrature demodulation. Its high precision and some other advantages have been proved by practical tests.
A genetic approach to mixed H/sub 2//H/sub /spl infin// optimal PID control

Mixed H/sub 2//H/sub /spl infin// control designs are quite useful for robust performance design for systems under parameter perturbation and uncertain disturbance. However, the conventional output feedback designs of mixed H/sub 2//H/sub /spl infin// optimal control are very complicated and not easily implemented for practical industrial applications. In this article, a PID design algorithm for mixed H/sub 2//H/sub /spl infin// control is proposed via the technique of genetic searching algorithms. Genetic algorithms are optimization and machine learning algorithms, initially inspired from the processes of natural selection and evolutionary genetics. The proposed design algorithm will bridge the gap between the theoretical mixed H/sub 2//H/sub /spl infin// optimal control and classical PID industrial controls. Two design examples are given to illustrate the design procedure and the performance of the proposed algorithm. >
Encyclopedia of spectroscopy and spectrometry

"The Second Edition of the Encyclopedia of Spectroscopy and Spectrometry" pulls key information into a single source for quick access to answers and/or in-depth examination of topics. "SPEC-2" covers theory, methods, and applications for researchers, students, and professionals - combining proven techniques and new insights for comprehensive coverage of the field. The content is available in print and online via ScienceDirect, the latter of which offers optimal flexibility, accessibility, and usability through anytime, anywhere access for multiple users and superior search functionality. No other work gives analytical and physical (bio)chemists such unprecedented access to the literature. With 30% new content, "SPEC-2" maintains the 'authoritative, balanced coverage' of the original work while also breaking new ground in spectroscopic research. The key features of the book include: incorporates more than 150 color figures, 5,000 references, and 300 articles (30% of which are new), for a thorough examination of the field; highlights new research and promotes innovation in applied areas ranging from food science and forensics to biomedicine and health; and features a new co-editor: David Koppenaal of Pacific Northwest National Laboratory, Washington, USA, whose work in atomic mass spectrometry has been recognized internationally.
Evaluating and improving undergraduate teaching : in science, technology, engineering, and mathematics

Economic, academic, and social forces are causing undergraduate schools to start a fresh examination of teaching effectiveness. Administrators face the complex task of developing equitable, predictable ways to evaluate, encourage, and reward good teaching in science, math, engineering, and technology. Evaluating, and Improving Undergraduate Teaching in Science, Technology, Engineering, and Mathematics offers a vision for systematic evaluation of teaching practices and academic programs, with recommendations to the various stakeholders in higher education about how to achieve change. What is good undergraduate teaching? This book discusses how to evaluate undergraduate teaching of science, mathematics, engineering, and technology and what characterizes effective teaching in these fields. Why has it been difficult for colleges and universities to address the question of teaching effectiveness? The committee explores the implications of differences between the research and teaching cultures-and how practices in rewarding researchers could be transferred to the teaching enterprise. How should administrators approach the evaluation of individual faculty members? And how should evaluation results be used? The committee discusses methodologies, offers practical guidelines, and points out pitfalls. Evaluating, and Improving Undergraduate Teaching in Science, Technology, Engineering, and Mathematics provides a blueprint for institutions ready to build effective evaluation programs for teaching in science fields.
Avaliação fotoelástica de overdentures mandibulares sobre implantes com três diferentes sistemas de retenção e prótese protocolo de Branemark

Objective: The purpose of this study was to evaluate of stress patterns produced by mandibular implant overdentures with three different attachment systems and fixed implant prosthesis, through the photoelastic method. Method: A mandibular model was fabricated PL-2 photoelastic resin having 4 screw-type implants (3.75 × 10 mm) embedded in the parasymphyseal area. Four clinical situations were evaluated: A Overdenture with 3 plastic Hader clips on bar; B Overdenture with 2 ERA attachment was in cantilever to the terminal implant and 1 anterior Hader clip; C Overdenture with 3 ball/O-ring attachment on bar and D implant-supported fixed partial denture (FPD). Vertical occlusal forces from 100 N were applied between of central incisor and unilaterally to the right and left second premolars and second molars for all the designs. In FPD were applied vertical loads in the first molars in order to allow analysis of the cantilever extension. Stresses that developed in the supporting structure were monitored photoelastically and recorded photographically. Results: Anterior loading, there was high stress concentration in medium implant in the situation A, mainly apical area. The premolar loading generated high stress to the ipsilateral implants with larger intensity from the FPD and situation A. The molar loading, the overdenture with 3 ball/O-ring attachment away the caused more uniform stress distribution in the posterior edentulous ridge with less overload in the terminal implant. The FPD cantilever increase caused high stress to the terminal implant and traction to the medium implant. All the situations demonstrated a low stress transfer at the level of the contralateral implants neck. Conclusion: Vertical forces applied to the bar-clip overdenture and FPD created immediate stress patterns of greater magnitude and concentration on ipsilateral implants while the ball/O-ring attachments transferred minimal stress to implants. The clinical implication of the FPD cantilever increase is significantly negative to the terminal implant longevity.
Secure Device Authentication Mechanisms for the Smart Grid-Enabled Home Area Networks

In this paper, we propose secure and intuitive device authentication techniques for the Smart Grid enabled Home Area Networks (HANs). We assume a distributed architecture for the HAN in which the smart appliances can communicate both with the smart meter and the gateway. Further, operating schedules of the smart appliances are controlled by the gateway based on the pricing and control messages from the smart meter. We propose three different authentication mechanisms for devices in the HAN: (1) between the gateway and the smart meter, (2) between the smart appliances and the HAN, and (3) between the transient devices and the HAN. We show that the proposed mechanisms are resilient against insider attackers performing serious attacks such as man-in-the-middle or impersonation during device authentication. Further, the proposed authentication mechanisms are intuitive and require no (or minimum) user effort.
Teacher Enrollment in MITx MOOCs: Are We Educating Educators?

Participants in Massive Open Online Courses (MOOCs) come from an incredibly diverse set of backgrounds and act with a wide range of intentions (Christensen 2013, Ho 2014). Interestingly, our own recent surveys of 11 MITx courses on edX in the spring of 2014 show that teachers (versus traditional college students) are a significant fraction of MITx MOOC participants. This suggests many ways to improve and harness MOOCs, including the potential arising from the collective professional experience of participants, opportunities for facilitating educator networks, MOOCs as a venue for expert-novice interactions, and possible added value from enhancing teacher experience through accreditation models and enabling individual teacher re- use of MOOC content. Here, we present data in detail from these teacher enrollment surveys, illuminate teacher participation in discussion forums, and draw lessons for improving the utility of MOOCs for teachers.
Deep neural network: Recognize Data Management of Artificial Intelligence in Retail

Deep neural networks with the artificial intelligence on Machine Learning (ML) algorithms constitute the best design specifically to deal with vast amount of data for retail business. The limited research approach is referred towards reducing memory consumption on integrating ML algorithms on data management system. This paper proposed combining data management and deep neural networks, ideas to build systems, which vast amount data can share in the database system. Therefore, ML algorithm has a pattern with multi-hidden layer that can use to synthesis different decision within a minimum processing. Finally, system precede and follow a NoSQL layers of a model employs in-memory database compression techniques and executes data management challenges with large datasets successfully.
Autonomous Control of an Underground Mining Vehicle

This paper examines the kinematics and control of a Load Haul Dump Vehicle used in underground mining operations. The aim of the work is to develop an autonomous guidance strategy. A linear, state-space, mathematical model of the vehicle is derived purely from geometric consideration of the vehicle and its desired path. Autonomous regulation of the vehicle is shown to be theoretically feasible using state variable feedback of displacement, heading and curvature error. A relationship between stability and vehicle speed is derived. This expression forms the basis of an adaptive tuning strategy which optimises the vehicle’s dynamic response.
Disclosing Unwanted Pursuit Victimization: Indirect Effects of Negative Reactions on PTSD Symptomatology Among Undergraduate Women

A growing literature has documented that negative social reactions to disclosures of sexual and intimate partner violence (IPV), such as victim blaming or disbelief, can negatively affect survivors’ recovery. However, despite growing recognition of the frequency of unwanted pursuit behaviors (UPBs; for example, stalking, excessive or threatening contact) following romantic relationships and their negative effects on survivors, research to date has not explored disclosures, social reactions, or their impacts among victims of UPBs. The purpose of the present study was to assess the frequency of disclosures of UPB victimization to various sources, social reactions received, and their associations with symptoms of posttraumatic stress disorder (PTSD). Among a sample of 318 undergraduate women (ages 18-24) who reported a breakup within the past 3 years, 59.7% (n =190) reported experiencing UPBs. Nearly all of the women (92.6%; n =176) who experienced UPBs disclosed their victimization to others. Among women who disclosed, the most frequent recipient of disclosure was a female friend (93.2%, n = 164) and women reported receiving higher mean positive than negative social reactions (p < .001). Results supported the hypothesized indirect effect of UPB victimization on PTSD symptoms through increases in negative social reactions (p < .001); these results suggest that negative social reactions to UPB victimization may increase the risk for PTSD symptomatology. By contrast, there was no indirect effect via positive social reactions (p = .205). Implications for research and clinical practice will be discussed.
Nonsuicidal Self-Injury-Related Differences in the Experience of Negative and Positive Emotion.

OBJECTIVE Emotional experience is argued to contribute to the initiation and maintenance of nonsuicidal self-injury (NSSI). We investigated whether individuals with/without a history of NSSI differed in their dispositional experience of negative and positive emotion, as well as their state responses to negatively and positively valenced movie clips. METHOD Undergraduates (n = 214, Mage = 21.33, 73.8% female, 35.5% reporting NSSI) completed measures of NSSI and dispositional emotional experience. Participants also viewed a sad and amusing movie clip and provided sadness/amusement ratings at seven time-points. RESULTS Relative to participants with no history of self-injury, participants reporting NSSI indicated more reactivity, intensity, and perseveration of dispositional negative emotion; however, differences were negated after adjusting for mental illness. Unexpectedly, individuals with a history of NSSI responded less intensely to the sad clip, although they demonstrated perseveration of sadness over time. Participants reporting NSSI also indicated less reactivity, intensity, and perseveration of dispositional positive emotion and, in response to the amusing film, reported less amusement at all time-points. CONCLUSIONS Considering different dimensions of negative and positive emotion may enhance understanding of NSSI. Future research should disentangle which dimensions of emotional experience are unique to NSSI and which are shared with mental illness more generally.
Linking the evolution of development of stem vascular system in Nyctaginaceae and its correlation to habit and species diversification

Background Alternative patterns of secondary growth in stems of Nyctaginaceae is present in all growth habits of the family and have been known for a long time. However, the interpretation of types of cambial variants have been controversial, given that different authors have given them different developmental interpretations. The different growth habits coupled with an enormous stem anatomical diversity offers the unique opportunity to investigate the evolution of complex developments, to address how these anatomies shifted within habits, and how the acquisition of novel cambial variants and habit transitions impacted the diversification of the family. Methods We integrated developmental data with a phylogenetic framework to investigate the diversity and evolution of stem anatomy in Nyctaginaceae using phylogenetic comparative methods, reconstructing ancestral states, and examining whether anatomical shifts correspond to species diversification rate shifts in the family. Results Two types of cambial variants, interxylary phloem and successive cambia, were recorded in Nyctaginaceae, which result from four different ontogenies. These ontogenetic trajectories depart from two distinct primary vascular structures (regular or polycyclic eustele) yet, they contain shared developmental stages which generate stem morphologies with deconstructed boundaries of morphological categories (continuum morphology). Unlike our a priori hypotheses, interxylary phloem is reconstructed as the ancestral character for the family, with three ontogenies characterized as successive cambia evolving in few taxa. Cambial variants are not contingent on habits, and their transitions are independent from species diversification. Conclusions Our findings suggest that multiple developmental mechanisms, such as heterochrony and heterotopy, generate the transitions between interxylary phloem and successive cambia. Intermediate between these two extremes are present in Nyctaginaceae, suggesting a continuum morphology across the family as a generator of anatomical diversity.
Performance vs. Preference

One of the main tenets of most company-sponsored quality programs is that the customer is always right. Designers frequently evaluate the goodness of their systems by simply asking users whether or not they like the interface. The fallacy of this approach is that users genrally make judgements based on their “preferences” and tend to ignore the more important performance issues. System designers frequently use their own preferences to make decisions, and then make major inferences about how users will perform with their system. Several past studies are reviewed to show that users can perform well and not like a system, or like a system and still not perform well. Two recent studies are reported showing a mismatch between designer's preferences for certain interface decisions, and measured user performance when using the resulting interfaces. It is proposed that better user interfaces are possible if we clearly separate the performance and preference concepts, recognize the limitations of each, and work to optimize one or the other (there is usually not sufficient time to optimize both). The only way to ensure that systems will elicit acceptable levels of performance is to conduct performance-oriented usability tests.
THE EFFECT OF WORK STRESS AND LEADERSHIP STYLES ON EMPLOYEE PERFORMANCE PT. BNI (PERSERO) TBK. MANADO BRANCH

Employees are the human resources of company and its most valuable asset. Company need to concern to all the factors that can affect the performance of their employee. This research is purposed to analyze the effect of work stress and leadership styles on employee performance at PT. BNI (Persero) Tbk. Branch Manado. The study took 50 employees as a sample from PT. BNI (Persero) Tbk. The data was analyzed by using multiple regression analysis. Work stress and leadership styles have negative significant effect on employee performance at PT. BNI (Persero) Tbk. Branch Manado influence. Higher level of stress existed with no managerial concern for solution consequently lowering the employee performance. Company have to aware the relationship between their employees, because it partially can lead to the conflict. Conflict that can not be handle by the company can damage and destructive the company and employee’s as well. Company should provide a comfortable working environment, give variety of task to employees that they are doing a good job and not demanding to much of their employees. Keywords: employee , performance, stress, leadership
An Analytical Study of Masters Dissertations on the Balme Library, University of Ghana, Legon

This paper analyses masters dissertations written on the Balme Library, University of Ghana by students of the Department of Information Studies, University of Ghana from 1998-2005, with a view to ascertaining how the management of Balme Library has implemented the recommendations from the dissertations. The analysis takes the form of the type and year of dissertation, subject of dissertation, and whether written by Balme Library staff or not. The findings indicate that most of the recommendations in the dissertations have not been implemented by the library. One of the reasons for this is that the Balme Library did not even know of the findings and recommendations. Some suggestions have been made to overcome this problem, including the need for staff of the Balme Library to supervise some of such dissertations or, failing this, and/or the need for the management of the library to, at least, be made aware of studies and recommendations relating to the Balme Library. West African Journal of Library, Archives and Information Science Vol. 16(2) 2006: 71-78
Lifted Inference with Tree Axioms

We consider the problem of weighted first-order model counting (WFOMC): given a first-order sentence ϕ and domain size n ∈ ℕ, determine the weighted sum of models of ϕ over the domain {1, . , n}. Past work has shown that any sentence using at most two logical variables admits an algorithm for WFOMC that runs in time polynomial in the given domain size (Van den Broeck 2011; Van den Broeck, Meert, and Darwiche 2014). In this paper, we extend this result to any two-variable sentence ϕ with the addition of a tree axiom, stating that some distinguished binary relation in ϕ forms a tree in the graph-theoretic sense.
What Are the Needs of Senior Tourists? Evidence from Remote Regions of Europe

Tourism is one of the fastest-growing industries in Europe, with growth mostly centered in major cities and urban locations. Nevertheless, remote destinations can also offer tranquility and accessibility, as well as both unexploited and unknown development potential for active senior travelers. The purpose of this paper is to analyze, on the basis of information gathered from 1705 questionnaires, senior touristic behavior, including motivations and decision-making issues for senior travelers in 11 remote regions of nine European countries (Finland, Latvia, Poland, Slovakia, Hungary, Bulgaria, Spain, Ireland, and Greece). A mixed-methods approach was used to fulfill the research objectives. Both interviews and the survey method were applied to generate data from senior tourists. The present study will focus on the key factors explaining senior tourists’ motivations and barriers to travel. The results of surveys conducted within the TOURAGE project indicate the significant potential of remote regions in the development of senior tourism. For senior respondents, a very important reason for going on holiday is the possibility of enjoying rest and silence. Safety, nature, historical sites, quality of services, and easy transportation connections are the top five attraction factors for seniors when choosing a destination. At the same time, according to the interviews, among the important problems negatively influencing the size of the senior tourism market in remote regions are: difficulties in reaching seniors with tourist offers, a lack of promotion of local tourist products aimed at seniors, and finally a lack of financial resources for the implementation of local projects supporting the development of senior tourism.
A Non-Isolated Bidirectional ZVS Active Clamped Dc–Dc Converter

Power electronic converter systems for applications such as telecom, automotive, and space can have dc voltage buses that are backed up with batteries or super capacitors. These batteries or super capacitors are connected to the buses with bidirectional dc–dc converters that allow them to be discharged or charged, depending on the operating conditions. Bidirectional dc–dc converters may be isolated or non-isolated depending on the application. A new soft-switched non-isolated bidirectional dc–dc converter is proposed in this paper. The proposed converter can operate with soft switching, a continuous inductor current, fixed switching frequency, and the switch stresses of a conventional pulse width modulation converter regardless of the direction of power flow and without any voltage spikes across the switches during turn-off. These features are due to a simple auxiliary active clamp circuit that is operational regardless of the direction of power flow.
Research and prospects of integrated optical beamforming network for phased array radar

In order to realize multi-function, the radar has wide instantaneous bandwidth and working bandwidth. Unfortunately, the traditional phased array radar antenna by microwave phase shifter or direct digital synthesis in the way of phasing. There are two limitations after increasing the instantaneous bandwidth: "beam squinting" and "aperture traverse delay", which cause the beam divergence and the beam broadening. In this paper, the integrated optical beamforming network technologies are discussed analyzed, which provide certain theoretical support for the research of the future multi-band broadband reconfigurable radar and even the engineering of microwave photonic radar.