Miracle-dz/UniFAR-FTUs huggingface dataset:
Concentração da propriedade nas empresas brasileiras de capital aberto

RESUMO Este artigo analisa as causas e conseqiiencias da concentracao da propriedade das empresas brasileiras de capital aberto, tomando por base uma amostra constitukla por 278 companhias. Os testes realizados tern como referencia os estudos de Demsetz e Lehn (1985) e Thomsen e Pedersen (1997), que procuraram responder as questOes referentes aos determinantes do grau de concentracao do controle acionario das empresas e seus respectivos impactos sobre a performance economico-financeira. 0 estudo realizado permite concluir que o grau de concentracao do controle acionario das companhias brasileiras sofre influencia da regulamentagao de mercado, do tamanho da firma e da estrutura de capital. Em relacao aos impactos da concentracao da propriedade sobre o desempenho economico-financeiro, apenas urn dos modelos testados apresentou resultados com significancia estatistica. Embora o ajustamento tenha alcancado urn R 2 muito baixo, verificou-se urn efeito negativo corn significancia da concentracao da propriedade sobre a performance econornico-financeira das companhias. Esse resultado indica que as empresas corn maior dispersao do controle acionario tendem a apresentar urn melhor desempenho. ABSTRACT This paper analyzes the causes and consequences of the concentration of stockholding control of Brazilian open-capital companies, based on a sample of 278 companies. The tests conducted are founded on the research of Demsetz and Lehn (1985) and Thomsen and Pedersen (1997), which sought to answer the question of the determinantes of the degree of stockholding control of the companies and its impact on economic and financial performance. The research concluded that the degree of stockholding control of Brazilian companies is influenced by market regulations, the size of the company and the capital structure. Only one of the models tested obtained results of any statistical significance in relation to the impact of the concentration of control on economic and financial performance. Although the approximation obtained a very low R2, a significant negative effect of the concentration of control on economic financial performance was verified. The result indicates that companies with greater dispersion in their stockholding structure tend to have better performance.
Design of 2-Port penta band, DECA frequency antenna using HFSS operating at NATO C, L, S, C and X bands

This paper presents a novel design of a penta band antenna which operates at ten (Deca) different frequencies (0.86 GHz, 1.57 GHz, 2.2 GHz, 2.82 GHz, 3.53 GHz, 7.1 GHz, 7.6 GHz, 8.3 GHz, 8.9 GHz, and 9.4 GHz) covering 5 different frequency bands (NATO C Band, L, S, C and X) bands. To achieve multi band operation, multi ring slotted circular patch is designed with dual port microstrip feed line. In this design Rogers RT Duroid 5880 substrate is sandwiched between circular multi ring structured patch and ground plane. The antenna is modeled and simulated using HFSS software. Since the antenna operates at five different bands and results in ten different frequencies hence called penta band, deca frequency antenna.
The Joint Flanker Effect and the Joint Simon Effect: On the Comparability of Processes Underlying Joint Compatibility Effects

Previous studies observed compatibility effects in different interference paradigms such as the Simon and flanker task even when the task was distributed across two co-actors. In both Simon and flanker tasks, performance is improved in compatible trials relative to incompatible trials if one actor works on the task alone as well as if two co-actors share the task. These findings have been taken to indicate that actors automatically co-represent their co-actor's task. However, recent research on the joint Simon and joint flanker effect suggests alternative non-social interpretations. To which degree both joint effects are driven by the same underlying processes is the question of the present study, and it was scrutinized by manipulating the visibility of the co-actor. While the joint Simon effect was not affected by the visibility of the co-actor, the joint flanker effect was reduced when participants did not see their co-actors but knew where the co-actors were seated. These findings provide further evidence for a spatial interpretation of the joint Simon effect. In contrast to recent claims, however, we propose a new explanation of the joint flanker effect that attributes the effect to an impairment in the focusing of spatial attention contingent on the visibility of the co-actor.
Estimation of endogenous noradrenaline release in rat brain in vivo using [3H]RX 821002

Noradrenaline plays an important role in many normal brain functions, e.g., attention, memory, and emotion. Dysfunction in the noradrenergic system is thought to lead to a number of abnormal brain conditions. The lack of suitable in vivo tracers to monitor noradrenaline release, levels, and regulation has hampered our fully understanding the roles that it plays in the brain. Presented here are data showing that the in vivo binding of the α2‐adrenoceptor antagonist [3H]RX 821002 is sensitive to endogenous noradrenaline. Elevation of extracellular noradrenaline, using three different pharmacological challenges in rat, led to a reduction in the binding potential (BP) of [3H]RX 821002 when compared with vehicle controls. The challenges used were i.p. administration of D‐amphetamine, the imidazoline2 binding site‐selective ligand BU224, and L‐deprenyl. Of the cortical regions measured, the reduction in BP reached significance in the anterior cingulate cortex for all of these pharmacological challenges. These initial observations in rat indicate that labelling of the α2‐adrenoceptors with RX 821002 can be used to estimate changes in extracellular noradrenaline concentration in the cortex. This has the potential to enable the investigation of the role that noradrenaline plays both in the normal and abnormal brain and, if the ligand can be radiolabelled with a suitable positron‐emitting isotope at high specific radioactivity, it could be an invaluable PET tracer. Synapse 55:126–132, 2005. © 2004 Wiley‐Liss, Inc.
Isotypic analysis of Plasmodium falciparum-specific antibodies and their relation to protection in Madagascar

We previously reported that antibodies to the central repeat (DDEHVEEPTVA) of Pf155/RESA, a major Plasmodium falciparum antigen, were negatively related to antimalarial protection. We measured levels of isotype antibodies to this epitope and to P. falciparum in 76 Madagascan subjects. Immunoglobulin G (IgG) and isotype antibodies specific for P. falciparum had similar levels in individuals who were considered protected and those who were not (as determined during a longitudinal follow-up). The levels of IgG1 antibodies to (DDEHVEEPTVA)3 were higher in nonprotected subjects. The levels of total IgG and of other isotype antibodies had a similar tendency to be higher in nonprotected than in protected individuals.
Effects of the Pluriativity of Brazilian Rural Establishments on Technical Efficiency

This paper examines Brazilian rural establishments that perform agricultural and non-agricultural activities. The combination of these activities, in the same agricultural unit, characterizes and defines pluriactivity. In this way, this research aims to verify the effect of pluriactivity on the efficiency of rural establishments, in technical terms. In order to reach the proposed goal, the Propensity Score Matching (PSM) was used to pair the sample in two groups, treated (pluriative) and untreated (non-pluriative). After the identification of these groups, a Probit model was estimated, followed by estimation of the production stochastic frontier to obtain the technical efficiency scores. The data used refer to a special tabulation based on the micro-data of the 2006 Census of Agriculture. Among the results found, establishments that carry out exclusively agricultural activities make better use of the available resources compared to the pluriactive ones, being technically more efficient. Acknowledgement :
An Inductive Approach to Documenting the "Core" and Evolution of the IS Field

This article inductively examines the question of the IS field’s core. We argue that as a socially constructed field, the core aspects of IS can be identified from the work conducted and published by members of the IS community. The abstracts (including titles) of 1,197 IS studies in three premier IS journals for the past 26 years were examined to identify the core of the field and explore its evolving nature with the help of a neural network software as the analysis tool. The field, contextual, transitory, and evolving core of IS are identified through the analysis of 267,034 words in the knowledge base constructed. The results show both stability and evolution of the core of IS field. The three journals examined show sufficient commonality on the core of the field, with slightly different preferences for research topics and methods. Given the diverse nature of the IS field, we believe that such a retrospective and descriptive study can document evidence of the “core” and facilitate a better understanding of the evolution of the field.
LucentMaps: 3D Printed Audiovisual Tactile Maps for Blind and Visually Impaired People

Tactile maps support blind and visually impaired people in orientation and to familiarize with unfamiliar environments. Interactive approaches complement these maps with auditory feedback. However, commonly these approaches focus on blind people. We present an approach which incorporates visually impaired people by visually augmenting relevant parts of tactile maps. These audiovisual tactile maps can be used in conjunction with common tablet computers and smartphones. By integrating conductive elements into 3D printed tactile maps, they can be recognized by a single touch on the mobile device's display, which eases the handling for blind and visually impaired people. To allow multiple elevation levels in our transparent tactile maps, we conducted a study to reconcile technical and physiological requirements of off-the-shelf 3D printers, capacitive touch inputs and the human tactile sense. We propose an interaction concept for 3D printed audiovisual tactile maps, verify its feasibility and test it with a user study. Our discussion includes economic considerations crucial for a broad dissemination of tactile maps for both blind and visually impaired people.
Bis(cyclohexylammonium) tetrachloridodiphenylstannate(IV)

The title compound, (C6H14N)2[Sn(C6H5)2Cl4], contains cyclohexylammonium cations in general positions and a stannate(IV) anion that is located on a twofold rotation axis. The SnIV atom in the complex anion is surrounded by four Cl− ligands and two trans-phenyl groups in a distorted octahedral configuration. The anions are connected with the cations through N—H⋯Cl hydrogen bonds. Every cation is involved in three N—H⋯Cl bonds to the chloride ligands of three different anions, and each chloride ligand is linked to two cations. This arrangement leads to a layered structure parallel to (010).
Progress of Microfinance in India under SHG-Bank Linkage Model

The Indian Microfinance Sector has witnessed a phenomenal growth over the past few years. In India, microfinance is provided majorly through two modelsthe SHG-Bank Linkage Model (SHGBLM) and Microfinance Institution (MFI)Bank Linkage Model. The SHG-BLM developed by NABARD is the most widely used model of micro finance in India. National Bank for Agriculture and Rural Development (NABARD) launched the pilot phase of the SHG-BLP in February 1992,as per which Self Help Groups (SHGs) were connected to banks for both savings and credit disbursement. Since1992, the programme has grown manifold. Today, the SHG Bank Linkage Programme (SHG-BLP) is the largest microfinance programme in the world because of its size and the population it touches. In this background the paper attempts to study the progress made under the SHG-Bank Linkage Model in India during the last decade.While the SBLP model remains the most widely used model of micro finance in India, the MFI model has also gained momentum in the recent past. The MFI Model is more recent and has grown rapidly from less than one million borrowers in 2003 to nearly 40 million borrowers in 2017.
Opportunities and Boundaries of Transport Network Telematics

Demographic changes in peripheral areas pose serious challenges on regional public transport systems. Recently, the response to such pressures has led to evaluate Internet of Things (IoT) technologies as a means to tackle mobility challenges in rural areas, thus leading to the concept of smart land. The urban areas usually provide suitable conditions for the successful application of IoT technologies, as proven by the successful outcome of several smart city projects. Framed within the context of the INTERREG Central Europe project RUMOBIL, this paper’s main goal is to understand whether it is possible to successfully deploy smart mobility systems on the rural context as it is on the urban context. To this aim, on the basis of a comprehensive literature review, we compared the ease of implementation of different IoT solutions on the urban and the rural context for planners, travellers, and operators, and, also, the degree of complexity of common smart mobility issues in both the urban and the rural context. Indeed, the novelty of this study resides in the comparison of the opportunities’ feasibility and challenges’ complexity of the application of IoT technologies to rural and urban mobility solutions. We found that both smart cities and smart lands are suitable to benefit from smart mobility solutions. Even considering the different levels of population scattering, technological infrastructures, social maturity, and economic opportunities, both rural and urban areas offer comparable advantages.
MITIGATE: An Innovative Cyber-Security Maritime Supply Chain Risk Management System

Despite the importance of Critical Information Infrastructures (CIIs) and dynamic ICT-based maritime Supply Chains (SCs) for ports operations, state-of-the-art Risk Management (RM) methodologies for maritime environments pay limited attention to cyber-security and do not adequately address security processes for international SCs. Motivated by these limitations, we have developed and will validate a novel RM system which will empower stakeholders’ collaboration for the identification, assessment and mitigation of risks associated with cyber assets and SC processes. This collaborative system will boost transparency in risk handling, while enabling the generation of unique evidence about risk assessment and mitigation. At the heart of this system is an open simulation environment enabling stakeholders to collaboratively simulate risks and evaluate risk mitigation actions. Emphasis is paid on the estimation of cascading effects in SCs, as well as on prediction of future risks. The system is compliant with prominent security standards and regulations for the maritime sector, i.e. ISPS, ISO 27001, ISO 27005, ISO 28000 etc.
EFFECT OF PROFITABILITY ON SHAREHOLDER VALUE OF BANKS LISTED AT THE NAIROBI SECURITIES EXCHANGE

Whereas profitability is expected to affect the value of firms, it is not clear how they affect the shareholder value for banks listed at the Nairobi Securities Exchange (NSE). Accordingly, this study evaluated the effect of profitability on the shareholders’ value of the banks listed at the Nairobi Securities Exchange. The target population was commercial banks companies listed on the Nairobi Securities Exchange. The study was designed as a census study due to the small size of population of eleven listed banks at the NSE. The study used secondary data. The secondary data was sourced from published audited financial statements of NSE listed banks for the years 2012 to 2016 on a quarterly basis. This formed 20 quarterly observations for each variable. Further data on share prices and market value of banks was sourced from the NSE database. The study adopted a descriptive research design. It used linear regression analysis of shareholder value on profitability to establish the statistical significance of the coefficient of profitability indicator at 95% confidence interval using the t-statistic and p-value to test the null hypothesis that profitability has no significant effect on shareholder value. The findings indicated that firm’s profitability had a positive effect on shareholders’ value. The study was limited by the sole focus on listed commercial banks and therefore did not take into account the uniqueness of non-listed commercial banks. It also only focused on banks and left out analysis of non-bank listed firms at the NSE. It was therefore suggested that a similar study be carried out not only for all banks both quoted and unquoted, but also for non-bank companies listed at the Nairobi Securities Exchange. Key Words: Profitability, Financial Performance, NSE
mIGF‐1/JNK1/SirT1 signaling confers protection against oxidative stress in the heart

Oxidative stress contributes to the pathogenesis of aging‐associated heart failure. Among various signaling pathways mediating oxidative stress, the NAD+‐dependent protein deacetylase SirT1 has been implicated in the protection of heart muscle. Expression of a locally acting insulin‐like growth factor‐1 (IGF‐1) propeptide (mIGF‐1) helps the heart to recover from infarct and enhances SirT1 expression in cardiomyocytes (CM) in vitro, exerting protection from hypertrophic and oxidative stresses. To study the role of mIGF‐1/SirT1 signaling in vivo, we generated cardiac‐specific mIGF‐1 transgenic mice in which SirT1 was depleted from adult CM in a tamoxifen‐inducible and conditional fashion. Analysis of these mice confirmed that mIGF‐1‐induced SirT1 activity is necessary to protect the heart from paraquat (PQ)‐induced oxidative stress and lethality. In cultured CM, mIGF‐1 increases SirT1 expression through a c‐Jun NH(2)‐terminal protein kinase 1 (JNK1)‐dependent signaling mechanism. Thus, mIGF‐1 protects the heart from oxidative stress via SirT1/JNK1 activity, suggesting new avenues for cardiac therapy during aging and heart failure.
Evaluation of GOES-16 ABI on-orbit performance using GSICS

The Advanced Baseline Imager (ABI) is the primary payload for NOAA's Geostationary Operational Environmental Satellite R-series (GOES-R). The first of this new generation GOES was launched on November 19, 2016, and named GOES-16 when it reached the orbit on November 29, 2016. ABI incorporated numerous advanced technologies to meet the ever-demanding users' requirements. There is great interest in the GOES-R Program, user community, and international partners whether ABI lives up to its expectations and how does it compare to Imager, the existing GOES imaging system. This paper will offer a preliminary glimpse of answers addressing those questions.
Witness Finding in the Black-Box Setting

We propose an abstract framework for studying search-to-decision reductions for NP. Specifically, we study the following witness finding problem: for a hidden nonempty set W ⊆ {0, 1}, the goal is to output a witness in W with constant probability by making randomized queries of the form “is Q ∩ W nonempty? ” where Q ⊆ {0, 1}. Algorithms for the witness finding problem can be seen as a general form of search-to-decision reductions for NP. This framework is general enough to express the average-case search-to-decision reduction of Ben-David et al., as well as the Goldreich-Levin algorithm from cryptography. We show that the witness finding problem requires Ω(n) non-adaptive queries with the error-free oracle, matching the upper bound of Ben-David et al. We also give a new witness finding algorithm that achieves an improved error tolerance of O(1/n) with O(n) non-adaptive queries. Further, we investigate a list-decoding version of the witness finding problem, where a witness is unique, i.e., |W | = 1, and answers from the oracle may contain some errors. For this setting, it has been known that an improved version of the Goldreich-Levin algorithm with O(n/ε) non-adaptive queries and O(1/ε) list size solves the problem with any (1/2− ε)-error bounded oracle. We show that this query complexity is optimal up to a constant factor (if we want to keep the list size polynomially bounded) even if queries are adaptive. ISSN 1433-8092 Electronic Colloquium on Computational Complexity, Revision 1 of Report No. 2 (2012)
On the Degree of Participant Commitment in NonWork Settings

The traditional view on participation in participatory design of workplace technologies assumes a high degree of commitment by participants. In non-work settings, however, such a degree of commitment cannot necessarily be assumed. Similarly, the social organization differs from work to non-work. In work settings the role of peers is well defined, whereas in non-work settings participating peers are more elusive—like the familiar stranger at the parents’ evening at school. Furthermore, work practices are institutionalized and it is possible to enforce people to become aware of the participation activities of others. This is not the case in non-work settings with lower degrees of commitment and weaker ties to the ‘organization. ’ Here, the means of awareness and engagement needs to be interwoven with people’s day-to-day idiosyncratic activities. We exemplify this tension with a recent case on citizen participation in a Danish national park and, furthermore, discuss the impact of commitment on how we design approaches to support participation.
Noun–verb naming in aphasia: a voxel-based lesion-symptom mapping study

Single case and anatomo-correlative studies of aphasic participants have indicated that lesions in temporal regions cause predominant noun impairment, whereas lesions in frontal areas affect verb processing. These studies, however, relied mostly on arbitrary cut-offs, grouping participants according to whether or not they showed a noun or a verb deficit. Here, instead, we applied a recent anatomo-correlation technique, voxel-based lesion symptom mapping (VLSM) to a group of 16 left-hemisphere stroke participants tested on noun and verb naming tasks. Behavioral and lesion data were collected continuously without establishing a priori two different groups of participants. Noun naming was associated with regions located in the left superior temporal areas, whereas verb naming involved a larger region extending from the left prefrontal to the superior temporal areas. The differences and similarities of the two networks are discussed.
Ion Mobility Spectrometry: Arriving on Site and Moving beyond a Low Profile

Trends in the development of ion mobility spectrometry are reviewed. A discussion of general principles of operation includes an overview and examines drift tube technology and ionization and response. A discussion of the scope of applications examines detection and characterization of single substances and complex mixtures. The technology that permitted the development of hand-held instruments is reviewed. A discussion of barriers to hand-held ion mobility spectrometers includes gas-phase chemistry, ion characterization and separation, sample inlets, bacterial assays by ion mobility spectrometry, databases and artificial intelligence, and ion sources. Directions for future applications and research are examined.