Miracle-dz/UniFAR-FTUs huggingface dataset:
North-Holland DIVIDEND YIE [ 2 DS AND EXPECIED ST ( KX RETURNS *

The power of dividend yields to fol~. -cast s'~ck returns, measured by regression R 2, inrA-eases with the return horizon. We offer a two-part explnnatio~. (1) ]-Iieh at~c}o~rfe]ation causes the variance of expected returns to grow faster than the return horizon. (2) The growth of the vari~ce of ,_me~cted returns with the return horizon is attenuated by a discount-rate effectshocks to expected returns generate opposite shocks to current prices. We estimate that, on average, the future price increases implied by hl. l~ ~ 0 e ~ ' ~ returns ~e just offset by the decline in the current price. Thus, time-varying expected returns generate 'temporary' components of prices.
Integração Multifuncional no Desenvolvimento de Produtos: Estudo de Múltiplos Casos em Indústrias de Laticínios Mineiras

O exercicio da inovacao em produtos reveste-se de ampla complexidade, que engloba as necessidades volateis dos consumidores, o avanco da tecnologia e o dinamismo da legislacao, dentre outros fatores. Essas incertezas causam dependencia entre as areas da organizacao, pois requerem inputs e cooperacao entre os agentes dos diversos departamentos funcionais, como Marketing, Producao, Pesquisa e Desenvolvimento (P&D) e Controle de Qualidade, no intuito de alcancar a congruencia da gestao da inovacao. Sob essas condicoes, este estudo pretendeu analisar a integracao interfuncional no desenvolvimento de produtos em empresas de laticinio de grande porte. Procedeu-se a um estudo de multiplos casos em duas industrias de laticinios mineiras. Os dados foram coletados por analise de documentos internos e entrevistas semi-estruturadas com os profissionais dos departamentos de Marketing, Pesquisa e Desenvolvimento, Producao e Controle de Qualidade, sendo trabalhados a partir da tecnica de analise de conteudo. Os resultados obtidos mostram que, mesmo com o desenvolvimento de produtos ja existentes no mercado, presencia-se a uma integracao entre as areas funcionais de forma distinta daquela preconizado por alguns autores. Entretanto, a percepcao positiva da integracao debate-se com a limitacao da mensuracao da eficiencia do processo integrativo. No entendimento dos entrevistados, os indicadores do produto norteiam os projetos desenvolvidos, mas nao ha uma reflexao sobre a contribuicao de cada departamento para o sucesso ou fracasso do projeto. Para eles, com a integracao houve a disseminacao das informacoes, evitando retrabalho e erros de lancamento, mas isso nao e considerado como indicador de desempenho da equipe.
Modeling distal pointing on large screens : the influence of target depth

Pointing is a fundamental task within many interactions in current computer applications. It is incorporated into everything from selecting buttons to dragging files or positioning objects in a virtual environment. Thus, understanding, modeling and predicting pointing performance is crucial to the design and evaluation of many computer interfaces. Fitts’s Law (1954) is the basis for modeling human pointing performance in the international standard on pointing device evaluation (ISO 9241-400:2007). However, while it is extremely robust for many standard desktop applications, previous work by Shoemaker et al. (2012) has suggested that Fitts’s Law may not be robust enough to accurately model pointing at more extreme levels of gain and has proposed alternatives to Fitts’s Law based on earlier work by Welford (1968). This thesis extends preliminary research by Rajendran (2012) that further examined these alternatives to Fitts’s Law for distal pointing. Distal pointing is common in virtual and augmented reality interfaces. We first reänalyze results reported by Rajendran using a variety of Welford-style models to explore the relationship between target depth and a parameter k that was first suggested by Kopper et al. (2010) but is inherent in Welford’s model. We then present a new experiment that removes the confound of system latency from Rajendran’s approach. Our analyses provide evidence that k varies monotonically (possibly linearly) with target depth, which further supports the claim by Shoemaker et al. that Welford-style two-part models are preferable to Fitts-style one-part models in some situations. Our analyses also challenge Kopper et al.’s suggestion that angular measures of task difficulty are superior to linear measures for pointing models. We close with a discussion of how our findings about the variation of k with target depth might be used in calibration procedures for virtual environments.
Graph Classification with Differential Privacy Graph Classification and Differential Privacy

With increasing usage of online services such as email, social networks and online shopping more data than ever before is being gathered. Many types of data for which structure, flow and relationships are important may naturally be represented by graphs. Services may want to use machine learning algorithms to gain insight about their customers or users, and to successfully use the concepts of machine learning they must take the structure and properties of graph data into account. Seemingly innocuous data could potentially be used to infer sensitive information about individuals and should be kept private, the algorithms and techniques used must therefore take privacy into consideration. In this thesis we consider the combination of machine learning and privacy by bringing together the concepts of support vector machines and differential privacy. We examine the classification of graphs by means of kernel methods and present a framework for constructing private representations of two well known graph kernels, the random walk kernel and graphlet kernels. Furthermore, to allow for classification of large graphs we present a novel sampling scheme for approximation of subgraph counts. We evaluate both sampling and classification using four real world datasets consisting of social, road and protein networks.
Produtividade E Competição No Mercado De Produtos: Uma Visão Geral Da Manufatura No Brasil

Increased productivity in a market economy appears as a symptom of operation expected the competition among companies. These variations in productivity with more competition may come from both the selection of firms mechanism, ie, the exit of less productive firms and entry of relatively more productive firms, such as the improvement of productivity itself of businesses that continue to operate. This paper presents initial evidence on this dimension of productivity developments seeking first identify the effects of competition in general on increasing productivity in manufacture in Brazil for 1997-2010 through decompositions; and second, combining elements of these decompositions with general measures of competition. The results suggest that the selection mechanism is quite relevant to explain the evolution of productivity (measured here as value added per worker), but productivity growth of companies operating trend remains also the direction of aggregate productivity growth, either for increases to such reductions over time. Palavras Chave: Competição, Realocação, Produtividade, Entrada e Saída de empresas.
The Paradoxes of Happiness in Economics " 21-23 March 2003

for the Conference "The Paradoxes of Happiness in Economics" 21-23 March 2003 Department of Economics University of Milano-Bicocca The not-so-fragile fragility of goodness by Vittorio Pelligra Università di Cagliari e-mail: pelligra@vaxca1.unica. it
PRODUCTIVE SYSTEMS AND THE STRUCTURING ROLE OF ECONOMIC AND SOCIAL THEORIES

The institutions of productive systems are structured by mutual interests and relative power. Securing mutually beneficial cooperation in production requires resolving distributional differences. These objectives are secured in liberal economic theory by the working of markets which mediate the power of individuals and reward individual success. The centrality of individuals and hierarchies in market theory contrasts with developments in labour management theory which identifies group activity and decentralised responsibility as productive factors and organisations as unitary. This neglects the separate interest that productive partners have and the role of institutions in resolving conflicts in productive systems to secure productive co-operation. JEL Codes: G34,, J51, J53, L22, L23, M12
"O meu corpo mudou tão depressa": as repercussões da gravidez na sexualidade feminina

Com objetivo de investigar as repercussoes psicologicas advindas das mudancas ocorridas no corpo da mulher durante o periodo gestacional, em especial no que tange a sexualidade, este estudo propos uma pesquisa teorica a partir das publicacoes realizadas, nos ultimos dez anos, em periodicos nacionais e bibliografias relevantes sobre esta tematica. A analise dos resultados mostrou que os novos contornos corporais da mulher gravida podem interferir no âmbito emocional da mulher, sendo que a barriga saliente e a principal fonte de confirmacao do estado gravidico. A respeito da sexualidade, destaca-se que essa sofre intensas mudancas, exigindo, muitas vezes, da mulher gravida e do casal a busca por novas formas de satisfacao do prazer sexual, para alem da penetracao vaginal, que envolve caricias, cuidado e aumento da intimidade.
Grožnje varnosti, varnostna tveganja in izzivi v sodobni družbi : razreševanje nekaterih terminoloških dilem

Razkorak med dejanskimi in zaznanimi grožnjami varnosti je privedel do mnogih terminoloskih problemov. Razvoj netradicionalisticnega pojmovanja varnosti je se dodatno prispeval k kognitivni zmedi, saj smo naenkrat sooceni z vojaskimi, politicnimi, gospodarskimi, okoljskimi, teroristicnimi, kriminalnimi, zdravstvenimi, identitetnimi in kulturnimi grožnjami varnosti posameznika, družbe, naroda, države ali mednarodne skupnosti. Avtor v nadaljevanju opredeli pomen groženj varnosti, varnostnih tveganj, nevarnosti in varnostnih izzivov ter njihova razmerja. Potrebno pa je tudi razlikovati med grožnjami varnosti, interesom, stabilnosti, miru in vrednotam referencnih objektov.
Warum) Sind Jungen Verlierer in der Schule

Trotz des verstarkten medialen und offentlichen Interesses steht die wissenschaftliche Forschung um den Bildungserfolg von Jungen und mogliche Hindernisse erst am Anfang. In diesem Beitrag soll untersucht werden, inwieweit Jungen als neue Bildungsverlierer betrachtet werden konnen und inwieweit das medial inszenierte Scheitern von Jungen durch Schuler/-innen wahrgenommen wird. Darauf aufbauend wird untersucht, ob die Wahrnehmung der Inkompatibilitat von Jungen und Schule negative Auswirkungen auf die Leistung und die Motivation von Schulern hat. Die Diskussion fokussiert die Frage, inwiefern mogliche Nachteile von Jungen im schulischen Kontext vermieden und/oder ausgeglichen werden konnen.
The Mixed-Strategy Approach in Other Projects

We summarize experiences from other projects in which we applied mixed-strategy. We observed similar benefits in terms of maintainability and reusability as in the Buffer library experiment described in Chapter 8 and 9, and FRS. Also, the structure of x-frameworks were similar in all the project. XVCL addresses issues changeability, evolution and reuse by applying the same underlying principles of genericity and adaptability, with relatively simple mechanisms. Mixed-strategy focuses on unifying software similarity patterns that cannot be unified with conventional techniques alone. In Chapter 9, we hinted at common reasons why similarity patterns arise, and common problems that make it difficult to come up with generic solutions with conventional programming techniques. As the mixed-strategy approach deals with similarities at the root level, the uniform structure of solutions across very different program domains should not be very surprising.
I. Photon Counting in Vision

Imagine sitting quietly in a dark room, staring straight ahead. A light flashes. Do you see it? Surely if the flash is bright enough the answer is yes, but how dim can the flash be before we fail? Do we fail abruptly, so that there is a well defined threshold—lights brighter than threshold are always seen, lights dimmer than threshold are never seen—or is the transition from seeing to not seeing somehow more gradual? These questions are classical examples of " psychophysics, " studies on the relationship between perception and the physical variables in the world around us, and have a history reaching back at least into the nineteenth century. In 1911, the physicist Lorentz was sitting in a lecture that included an estimate of the " minimum visible, " the energy of the dimmest flash of light that could be consistently and reliably perceived by human observers. But by 1911 we knew that light was composed of photons, and if the light is of well defined frequency or wavelength then the energy E of the flash is equivalent to an easily calculable number of photons n, n = E/ω. Doing this calculation, Lorentz found that just visible flashes of light correspond to roughly 100 photons incident on our eyeball. Turning to his physiologist colleague Zwaa-dermaker, Lorentz asked if much of the light incident on the cornea might get lost (scattered or absorbed) on its way through the gooey interior of the eyeball, or if the experiments could be off by as much as a factor of ten. In other words, is it possible that the real limit to human vision is the counting of single photons? Lorentz' suggestion really is quite astonishing. If correct , it would mean that the boundaries of our perception are set by basic laws of physics, and that we reach the limits of what is possible. Further, if the visual system really is sensitive to individual light quanta, then some of the irreducible randomness of quantum events should be evident in our perceptions of the world around us, which is a startling thought. In this Chapter, we will see that humans (and other animals) really can detect the arrival of individual pho-tons at the retina. Tracing through the many steps from photon arrival to perception we will see a sampling of the physics problems posed by biological systems, ranging from the dynamics of single …
The impact of cerebrospinal fluid viral analysis on empiric antibiotic use in children admitted to Tygerberg Children’s hospital with suspected meningitis

Background: Viral meningitis is the most common form of aseptic meningitis and requires minimal investigation and treatment. Polymerase chain reaction (PCR) has become the ‘gold standard’ for identifying viruses in cerebrospinal fluid and can provide rapid results. The objective of the study was to describe the aetiology and epidemiology of viral meningitis at Tygerberg Children’s Hospital, as well as the impact of a positive cerebral spinal fluid (CSF) viral panel on the duration of empiric antibiotic treatment.Methods: This was a retrospective folder review of all children aged between 29 days and 13 years who had a CSF specimen on which a viral analysis was performed from January 1, 2010 to December 31, 2014.Results: A total of 288 specimens were identified from the laboratory database. Seventy-nine specimens were presented for data analysis. Thirty-seven specimens had a positive viral analysis. The median age was 11.3 months (IQR 3.7–49.16 months). The microscopy and chemistry results were similar for the two groups except for the CSF lymphocyte count, which was significantly higher in the group with a positive CSF viral analysis compared to those with a negative CSF viral analysis (median 52 vs. 12 × 106/l, p = 0.005). The most common identified virus was Epstein–Barr virus (EBV) (23%), followed by enterovirus (17%). Children with a positive viral analysis tended to receive antibiotics for longer than those who had negative results (p = 0.223). Conclusion: The addition of CSF viral analysis could be helpful in the management of children with meningitis, but at present appears to have little impact on the length of antibiotic use.
The girth of a Heegaard splitting

We construct simple curves from immersed curves in the setting of handlebodies and Heegaard splittings. We define a measure of complexity we call girth for closed curves in a handlebody. We extend this complexity to Heegaard splittings and pose a conjecture about all Heegaard splittings. We prove a test case of this conjecture. Let S be a compact surface embedded in the boundary of a handlebody H. Then the minimum girth over all curves in S can be achieved by a simple closed curve. We also present algorithms to compute the girth of curves and surfaces.
Executive Decision Support: Single-Agent Control of Multiple UAVs

IEEE Robotics & Automation Magazine JUNE 2009 1070-9932/09/$25.00a2009 IEEE 73 O ne challenge facing coordination and deployment of unmanned aerial vehicles (UAVs) today is the amount of human involvement needed to carry out a successful mission. Currently, control and coordination of UAVs typically involves multiple operators to control a single agent. The aim of this article is to invert this relationship, enabling a single pilot to control and coordinate a group of UAVs. Furthermore, decision support is provided to the pilot to facilitate effective control of the UAV team. In the scenario envisioned in this article, the human operator (the pilot) is operating along-side a team of UAVs. The pilot communicates with the UAV team remotely and controls the UAV team to execute a surveillance mission. An important aspect of this is the question of how much the pilot should interact with the UAV team and how much aid should be provided to the pilot without overloading the pilot with data and support. We address this issue by allowing two major modes of operations, namely autonomous mode and pilot-controlled mode. In both of these modes, the UAV team is controlled in a leader–follower manner, and the leader UAV is assigned by the pilot, where the followers are positioning themselves with respect to the other UAVs in the network. In the autonomous mode, the leader UAVexecutes the mission without intervention of the pilot. At any time, the pilot is allowed to take over and directly control the leader vehicle. Hence, the pilot can interrupt the mission to investigate an area or avoid certain threats. The pilot can also release control of the UAV, and the UAV team automatically resumes the execution of the given mission. The problem of controlling multiple agents in a coordinated fashion to achieve a set of goals, such as maintaining desired formations, ensuring coverage
Performance Differences between PID and Fuzzy Logic Controller in AVR System

In the past century, machine control consists mainly of analog technologies that are requiring a lot of maintenance and very time consuming to be tuned. In this paper, the construction of a fuzzy logic and a PID controller is presented. This work aims to develop a controller based on fuzzy logic to simulate an automatic voltage regulator in power system stability analysis. The application of the fuzzy logic controller as a power system stabilizer is investigated by means of simulation studies only on a single machine infinite bus system. The fuzzy logic controllers are based on empirical control rules. It was simulated one machine control to test if the fuzzy controller implementation was possible. The development of a fuzzy logic based power system stabilizer is to maintain stability and enhance the closed-loop performance of a power system is described. The performances have compared of both the fuzzy-based AVR and the conventional AVR for a single-machine-infinitebus test system. It has been shown that the stabilization of terminal voltage is enhanced with the presence of fuzzy-based AVR.
Nutritional awareness among pregnant women in Latvia

Background: Women's eating habits affect not only the course of pregnancy but also the later life's metabolic health of their off springs. In 2016 Latvian guidelines on healthy nutrition during preconception period, pregnancy and lactation were published. The aim of this study was to analyze the level of nutritional awareness among pregnant women in Latvia. Methods: A descriptive cross-sectional study was carried out in Riga Maternity Hospital. 110 pregnant women receiving antenatal care participated in the survey. Results: 64.5% of respondents received recommendations on proper nutrition from health care professionals during pregnancy, whereas only 20.9% were informed in the preconception period. 68.7% of participants, who received information about the principles of healthy nutrition, considered them to be sufficient. The majority of women got the recommendations from gynecologists-obstetricians4.9%. 39.1% of women used non-evidence-based sources when searching for the information about healthy nutrition. 34.5% of all pregnant women had at least one health or social risk factor, which required individualized diet planning, however, 26.3% of them did not receive any recommendations at all. 28.7% of respondents started pregnancy with abnormal Body Mass Index (BMI). Conclusions: Women should be advised to make diet corrections before pregnancy, therefore more consultations in preconception period are needed. Additional educational sources providing information about healthy nutrition should be considered.
Acoustic Analysis of Stuttering Children S Fluent Speech: Pre-and Post-therapy Hyun-sub Sim . Acoustic Analy Sis of Stuttering Children S Fluent Speech: Pre-and Post -t Herapy . K or Ean I. Intr Oduction

HyunSub Sim. Acoustic Analysis of Stuttering Children s Fluent Speech: Preand Post Therapy . K orean J ournal of Communicat ion D isorders, 2 , 119136. This study compared absolute durations of temporal acoustic parameters at the subsegmental level of fluent speech produced by stuttering children (N = 4) before and after Normal T alking Process therapy. These measures were compared with those of an ageand gender matched control group of normally fluent children. The findings indicated that voice onset time (VOT ) and CV(consonantvowel) transition duration decreased significantly after therapy. Children who stutter produced significantly longer vowel duration than control group both before and after therapy. The results were discussed in light of differential aspects of the treatment .
Electrónica de potencia: la otra electrónica

Si el lector se encuentra con la palabra “electronica”, seguramente pensara en computadoras, telefonos celulares, televisiones, radios y consolas de videojuegos, entre otros equipos modernos (todo lo relacionado con electronica digital, comunicaciones, sistemas de audio y video); sin embargo, existe otra rama de la electronica que tiene gran importancia, tanto en nuestra vida diaria como para el futuro de nuestra civilizacion: es la electronica de potencia
Running with the center of mass on the hip is far from optimal

Running robots often have their center of mass (CoM) located on the hip. This decouples the pitching and CoMdynamics and therefore allows for simple control schemes. However, by creating an offset between the CoM and the hip, and herewith introducing coupling between the pitching and CoMdynamics, the performance of the running robot might possibly increase. In this simulation study, we calculated the optimal CoMlocation for a running robot with hip actuation. We measured the performance of the system as the largest step-down and push that can be corrected in one or two steps. We found that the largest step-down can be corrected in one step when the CoM is located above the hip. The largest push on the other hand can be corrected when the CoM is located under the hip. For two-steps recovery strategies, placing the CoM exactly on the hip is the worst option out of all possible CoM-locations. In this case, the corresponding disturbance rejection is approximately a factor 10 worse than for the optimal CoM-location. Therefore, we conclude that placing the CoM of the torso on the hip is far from optimal.