bluuebunny/crossref_metadata_2025 huggingface dataset:
A Review of Visual-LiDAR Fusion based Simultaneous Localization and Mapping
Authors: Debeunne César , Vivet Damien
Published: April 2020

Autonomous navigation requires both a precise and robust mapping and localization solution. In this context, Simultaneous Localization and Mapping (SLAM) is a very well-suited solution. SLAM is used for many applications including mobile robotics, self-driving cars, unmanned aerial vehicles, or autonomous underwater vehicles. In these domains, both visual and visual-IMU SLAM are well studied, and improvements are regularly proposed in the literature. However, LiDAR-SLAM techniques seem to be relatively the same as ten or twenty years ago. Moreover, few research works focus on vision-LiDAR approaches, whereas such a fusion would have many advantages. Indeed, hybridized solutions offer improvements in the performance of SLAM, especially with respect to aggressive motion, lack of light, or lack of visual features. This study provides a comprehensive survey on visual-LiDAR SLAM. After a summary of the basic idea of SLAM and its implementation, we give a complete review of the state-of-the-art of SLAM research, focusing on solutions using vision, LiDAR, and a sensor fusion of both modalities.
A Comparative Study of Brachial–Ankle Pulse Wave Velocity and Heart–Finger Pulse Wave Velocity in Korean Adults
Authors: Cho Jaegeol , Baek Hyun Jae
Published: April 2020

Arterial stiffness is considered an index of vascular aging. The brachial–ankle pulse wave velocity (baPWV) method is widely used because of its proven effectiveness; and the pulse wave velocity measurement method using both electrocardiogram (ECG) and photoplethysmogram (PPG) is actively being studied due to the convenience of measurement and the possibility of miniaturization. The aim of this study was to evaluate and compare the effects of age and gender in Korean adults using both the baPWV method and the PWV method with ECG and finger PPG (heart–finger PWV). The measurements have been carried out for 185 healthy subjects of Korean adults, and the results showed that the baPWV was highly correlated with age in both genders (r = 0.94 for both males and females). However, the correlation values in heart–finger PWV measurement were significantly lower than those of baPWV (r = 0.37 for males and r = 0.71 for females). Although the heart–finger PWV method is suitable for mobile applications because it can be easily miniaturized while maintaining its signal quality, these results show that the heart–finger PWV method is not as effective as baPWV at evaluating the arterial stiffness.
Joint Resource Optimization for Orthogonal Frequency Division Multiplexing Based Cognitive Amplify and Forward Relaying Networks
Authors: Qin Dong , Zhou Tianqing
Published: April 2020

This paper investigates two resource allocation problems in cognitive relaying networks where both secondary network and primary network coexist in the same frequency band and adopt orthogonal frequency division multiplexing (OFDM) technology. The first one is the sum rate maximization problem of a secondary network under total power budget of a secondary network and tolerable interference constraint of a primary network. The second one is the sum rate maximization problem of a secondary network under separate power budgets of a secondary network and tolerable interference constraint of a primary network. These two optimization problems are completely different from those in traditional cooperative communication due to interference management constraint condition. A joint optimization algorithm is proposed, where power allocation and subcarrier pairing are decomposed into two subproblems with reasonable cost. The first one is a closed form solution of power allocation of the secondary network while managing the interference to a primary network under a constraint condition. The other is optimal subcarrier pairing at given power allocation. Simulation results reveal aspects of average signal to noise ratio (SNR), interference level, relay position, and power ratio on the sum rate of a secondary network.
Self-Calibration for the Time Difference of Arrival Positioning
Authors: Sidorenko Juri , Schatz Volker , Bulatov Dimitri , Scherer-Negenborn Norbert , Arens Michael , Hugentobler Urs
Published: April 2020

The time-difference-of-arrival (TDOA) self-calibration is an important topic for many applications, such as indoor navigation. One of the most common methods is to perform nonlinear optimization. Unfortunately, optimization often gets stuck in a local minimum. Here, we propose a method of dimension lifting by adding an additional variable into the l 2 norm of the objective function. Next to the usual numerical optimization, a partially-analytical method is suggested, which overdetermines the system of equations proportionally to the number of measurements. The effect of dimension lifting on the TDOA self-calibration is verified by experiments with synthetic and real measurements. In both cases, self-calibration is performed for two very common and often combined localization systems, the DecaWave Ultra-Wideband (UWB) and the Abatec Local Position Measurement (LPM) system. The results show that our approach significantly reduces the risk of becoming trapped in a local minimum.
Automatic Calibration of the Step Length Model of a Pocket INS by Means of a Foot Inertial Sensor
Authors: Bousdar Ahmed Dina , Diaz Estefania Munoz , García Domínguez Juan Jesús
Published: April 2020

All non-foot-mounted inertial localization systems have a common challenge: the need for calibrating the parameters of the step length model. The calibration of the parameters of a step length model is key for an accurate estimation of the pedestrian’s step length, and therefore, for the accuracy of the position estimation. In a previous work, we provided a proof of concept on how to calibrate step length models with a foot inertial navigation system (INS), i.e., an INS based on an inertial measurement unit (IMU) mounted on the upper front part of the foot. The reason is that the foot INS does not require calibration thanks to the implementation of the strapdown algorithm. The goal of this article is to automatically calibrate the parameters of a step length model of the pocket INS by means of the foot INS. The step length model of the pocket INS has two parameters: the slope and offset of a first-order linear regression that relates the amplitude of the thigh pitch with the user’s step length. Firstly, we show that it is necessary to estimate the two parameters of the step length model. Secondly, we propose a method to automatically estimate these parameters by means of a foot INS. Finally, we propose a practical implementation of the proposed method in the pocket INS. We evaluate the pocket INS with the proposed calibration method and we compare the results to the state of the art implementations of the pocket INS. The results show that the proposed automatic calibration method outperforms the previous work, which proves the need for calibrating all the parameters of the step length model of the pocket INS. In this work, we conclude that it is possible to use a foot INS to automatically calibrate all parameters of the step length model of the pocket INS. Since the calibration of the step length model is always needed, our proposed automatic calibration method is a key enabler for using the pocket INS.
Obfuscation of Malicious Behaviors for Thwarting Masquerade Detection Systems Based on Locality Features
Authors: Maestre Vidal Jorge , Sotelo Monge Marco Antonio
Published: April 2020

In recent years, dynamic user verification has become one of the basic pillars for insider threat detection. From these threats, the research presented in this paper focuses on masquerader attacks, a category of insiders characterized by being intentionally conducted by persons outside the organization that somehow were able to impersonate legitimate users. Consequently, it is assumed that masqueraders are unaware of the protected environment within the targeted organization, so it is expected that they move in a more erratic manner than legitimate users along the compromised systems. This feature makes them susceptible to being discovered by dynamic user verification methods based on user profiling and anomaly-based intrusion detection. However, these approaches are susceptible to evasion through the imitation of the normal legitimate usage of the protected system (mimicry), which is being widely exploited by intruders. In order to contribute to their understanding, as well as anticipating their evolution, the conducted research focuses on the study of mimicry from the standpoint of an uncharted terrain: the masquerade detection based on analyzing locality traits. With this purpose, the problem is widely stated, and a pair of novel obfuscation methods are introduced: locality-based mimicry by action pruning and locality-based mimicry by noise generation. Their modus operandi, effectiveness, and impact are evaluated by a collection of well-known classifiers typically implemented for masquerade detection. The simplicity and effectiveness demonstrated suggest that they entail attack vectors that should be taken into consideration for the proper hardening of real organizations.
Effects of Rapid Palatal Expansion on Chewing Biomechanics in Children with Malocclusion: A Surface Electromyography Study
Authors: Spolaor Fabiola , Mason Martina , De Stefani Alberto , Bruno Giovanni , Surace Ottavia , Guiotto Annamaria , Gracco Antonio , Sawacha Zimi
Published: April 2020

Malocclusion during childhood may affect both morphology and masticatory function and could greatly affect the subsequent growth and development of the jaws and face. The purpose of this study was to evaluate the efficiency of surface electromyography in describing the effects of the rapid palatal expansion (RPE) on Masseter (M) and Temporalis Anterior (T) muscles’ activity in 53 children with different types of malocclusion: bilateral posterior crossbite (BPcb), underdeveloped maxillary complex without crossbite (NOcb) and unilateral posterior crossbite on the right (UPCBr) and on the left (UPCBl). The muscular activities during chewing tasks were assessed bilaterally before and after RPE application and three months after removal. Both the envelope’s peak (µV) and its occurrence (% of chewing task) were extracted from the surface electromyography signal. Our results showed the presence of statistically significant differences (p < 0.05) on temporomandibular joint muscles, across different assessments, in all the tested populations of subjects. Surface electromyography demonstrated a relationship between the correction of a maxillary transverse discrepancy and the restoration of a muscle’s activation patterns comparable to healthy subjects for both T and M.
A New Capacitance Sensor for Measuring the Void Fraction of Two-Phase Flow Through Tube Bundles
Authors: Ahmed Wael , Fatayerji Adib , Elsaftawy Ahmed , Hassan Marwan , Weaver David , Riznic Jovica
Published: April 2020

Evaluating the two-phase flow parameters across tube bundles is crucial to the analysis of vibration excitation mechanisms. These parameters include the temporal and local variation of void fraction and phase redistribution. Understanding these two-phase parameters is essential to evaluating the stability threshold of tube bundle configurations. In this work, capacitance sensor probes were designed using finite element analysis to ensure high sensor sensitivity and optimum response. A simulation-based approach was used to calibrate and increase the accuracy of the void fraction measurement. The simulation results were used to scale the normalized capacitance and minimize the sensor uncertainty to ±5%. The sensor and required conditioning circuits were fabricated and tested for measuring the instantaneous void fraction in a horizontal triangular tube bundle array under both static and dynamic two-phase flow conditions. The static calibration of the sensor was able to reduce the uncertainty to ±3% while the sensor conditioning circuit was able to capture instantaneous void fraction signals with frequencies up to 2.5 kHz.
Minitabela Periódica Interativa
Authors: César Eloi Teixeira , Reis Rita de Cássia , Aliane Cláudia Sanches de Mello , Geraldo Patrícia Abranches , Martins Loren
Published: April 2020

O Centro de Ciências da Universidade Federal de Juiz de Fora é um órgão suplementar da Reitoria, tendo como principais objetivos a divulgação da Ciência e o de promover a formação inicial e continuada de professores em espaços nãoescolares de ensino.  A atual proposta pretende continuar e ampliar a realização de nossas atividades de divulgação relacionadas à classificação periódica dos elementos químicos. Para tanto, utilizaremos, como objetos educacionais, a Tabela Periódica Interativa e a Minitabela Periódica Interativa, ambas inteiramente produzidas e desenvolvidas no Centro de Ciências. Desta forma, podemos dividir as ações a serem executadas em dois grupos: o primeiro estará relacionado à Tabela Periódica Interativa. Este é um objeto fixo, que contém amostras reais de 83 elementos químicos, materiais do cotidiano e minerais relacionados aos elementos, e que fica em permanente exposição em um espaço específico no Centro de Ciências, o qual vem recebendo visitas desde 2009. A segunda ação refere-se à Minitabela Periódica Interativa, que tem também amostras reais de 83 elementos químicos, mas com o diferencial de ser em tamanho reduzido, o que permite o seu fácil deslocamento para Escolas, eventos de divulgação ou outros locais em que possa ser exposta com o intuito de permitir a interação com a tabela. Neste caso, pretendemos ter como foco principal o atendimento ao público escolar, disponibilizando as duas minitabelas para serem levadas para as escolas. Para tanto, iremos oferecer um curso de formação continuada de professores de Química e Ciências para posterior aplicação das atividades em suas respectivas salas de aula.
Jurassic lithostratigraphy and stratigraphic development onshore and offshore Denmark
Authors: Michelsen Olaf , Nielsen Lars H. , Johannessen Peter N. , Andsbjerg Jan , Surlyk Finn
Published: April 2020

A complete updated and revised lithostratigraphic scheme for the Jurassic succession of the onshore and offshore Danish areas is presented together with an overview of the geological evolution. The lithostratigraphies of Bornholm, the Danish Basin and the Danish Central Graben are described in ascending order, and a number of new units are defined. On Bornholm, the Lower–Middle Jurassic coal-bearing clays and sands that overlie the Lower Pliensbachian Hasle Formation are referred to the new Sorthat Formation (Lower Jurassic) and the revised Bagå Formation (Middle Jurassic). In the southern Danish Central Graben, the Middle Jurassic succession formerly referred to the Lower Graben Sand Formation is now included in the revised Bryne Formation. The Lulu Formation is erected to include the uppermost part of the Middle Jurassic succession, previously referred to the Bryne Formation in the northern Danish Central Graben. The Upper Jurassic Heno Formation is subdivided into two new members, the Gert Member (lower) and the Ravn Member (upper). The organic-rich part of the upper Farsund Formation, the former informal ‘hot unit’, is established formally as the Bo Member. Dominantly shallow marine and paralic deposition in the Late Triassic was succeeded by widespread deposition of offshore marine clays in the Early Jurassic. On Bornholm, coastal and paralic sedimentation prevailed. During maximum transgression in the Early Toarcian, sedimentation of organic-rich offshore clays took place in the Danish area. This depositional phase was terminated by a regional erosional event in early Middle Jurassic time, caused by uplift of the central North Sea area, including the Ringkøbing–Fyn High. In the Sorgenfrei–Tornquist Zone to the east, where slow subsidence continued, marine sandy sediments were deposited in response to the uplift. Uplift of the central North Sea area was followed by fault-controlled subsidence accompanied by fluvial and floodplain deposition during Middle Jurassic time. On Bornholm, deposition of lacustrine muds, fluvial sands and peats dominated. The late Middle Jurassic saw a gradual shift to shallow marine deposition in the Danish Central Graben, the Danish Basin and Skåne, southern Sweden. During the Late Jurassic, open marine shelf conditions prevailed with deposition of clay-dominated sediments while shallow marine sands were deposited on platform areas. The Central Graben received sand by means of sediment gravity flows. The clay sediments in the Central Graben became increasingly rich in organic matter at the Jurassic–Cretaceous transition, whilst shallow marine coarse-grained deposits prograded basinwards in the Sorgenfrei– Tornquist Zone.
Middle Jurassic – Early Cretaceous rifting of the Danish Central Graben
Authors: Møller Jens J. , Rasmussen Erik S.
Published: April 2020

During the Jurassic – Early Cretaceous, the Danish Central Graben developed as a N–S- to NNW– SSE-trending graben bounded by the Ringkøbing–Fyn High towards the east and the Mid North Sea High towards the west. The graben consists of a system of half-grabens and evolved by faultcontrolled subsidence; three main rift pulses have been recognised. The first pulse ranged from the Callovian to the Early Oxfordian, the second pulse was initiated in the latest Late Kimmeridgian and lasted for most of the Early Volgian, and the third and final pulse occurred within the Ryazanian in the Early Cretaceous. The first pulse was characterised by subsidence along N–S-trending faults. The most pronounced fault-controlled subsidence occurred in the east, especially along N–S-striking segments of the boundary fault to the Ringkøbing–Fyn High. During this period, minor salt movements occurred with the development of salt pillows. The activity along the N–S-trending faults ceased during the Oxfordian. During the second pulse, in Early Volgian times, subsidence was concentrated along new NNW–SSE-trending faults and the main depocentre shifted westward, being most marked within the Tail End Graben, the Arne–Elin Graben, and the Feda Graben. This tectonic event was accompanied by the accumulation of a relatively thick sediment load resulting in the development of salt diapirs, especially within the Salt Dome Province. The third tectonic pulse was essentially a reactivation of the NNW–SSE-trending structures and there is clear evidence of subsidence controlled by faulting and salt movements. Despite the overall extensional tectonic regime, local compressional tectonics resulted in thrusting. For instance, the Gert Ridge is interpreted to have formed by readjustment at the boundary fault between two subsiding blocks. The structural framework during graben evolution controlled, to some degree, the distribution of reservoir sandstones. Reservoir sandstones associated with periods of rotational tilt include Middle Jurassic deposits referred to the Bryne and Lulu Formations, and Upper Jurassic sandstones referred informally to the ‘Fife Sandstone Formation’. Sands deposited during tectonic relaxation are represented by the Heno Formation and Upper Jurassic turbidites interbedded in the Farsund Formation. Sea-level changes were probably most important during periods of tectonic relaxation, particularly with respect to the deposition of lowstand sandstones in basinal areas.
Explanatory notes to the Geological Map of Greenland, 1:100 000, Ussuit 67 V.2 Nord
Authors: Van Gool Jeroen A.M. , Marker Mogens
Published: April 2020

The Ussuit map area is situated around the inner Nassuttooq (Nordre Strømfjord) in central West Greenland, in the core of the Palaeoproterozoic Nagssugtoqidian orogen. The orogen largely consists of reworked Archaean gneisses, as well as Palaeoproterozoic ortho- and paragneisses in its central part. Easy access through the branched fjord system and good exposures along its coastlines, combined with less intense reworking compared to neighbouring areas to the west and south, have made the Ussuit map area the most intensely studied and best known part of the orogen. The most recent research and mapping projects were organised by the Danish Lithosphere Centre (1994–1999) and the Geological Survey of Denmark and Greenland (2000–2001).

The predominant rocks are late Archaean tonalitic and granodioritic orthogneisses, intruded by postkinematic granites. Archaean supracrustal rocks are predominantly of mafic composition, but only few have been recognised. Palaeoproterozoic rocks occur as tectonic sheets (the Ussuit unit) which are always in tectonic contact with the Archaean orthogneisses. The most abundant Palaeoproterozoic rock types are biotite schist and biotite-bearing paragneiss, besides orthogneiss of the Arfersiorfik intrusive suite. The latter rocks are mainly deformed quartz diorites intrusive into the metasedimentary rocks and interpreted as remnants of a magmatic arc above a subduction zone. The Ussuit unit also includes amphibolite, marble and calc-silicate rocks, and lenses of ultrabasic rocks. Small bodies of younger syn- and post-tectonic granites occur throughout the map area. The interleaved Palaeoproterozoic and Archaean rocks form a major anticlinal fold structure between two crustal-scale shear zones, the Nordre Strømfjord shear zone in the north and the Nordre Isortoq steep belt in the south. These shear zones formed during the latest ductiledeformation event (D4), following ductile thrusting (D1) and kilometre-scale folding (D2 and D3). The deformation and high grade metamorphism are the result of collision of two Archaean blocks at c. 1850 Ma, with a presumed strongly deformed suture rooted in the southern Ussuit area.

No economically feasible mineral occurrences have been discovered to date within the Ussuit map area. Minor sulphide mineralisation related to hydrothermal activity occurs in faults and shear zones, and minor stratabound iron formations have been observed. The most promising industrial mineral deposits are minor diopside occurrences and potential dimension stone in migmatised orthogneiss.
Surface albedo as a proxy for the mass balance of Greenland’s terrestrial ice
Authors: Colgan William , Box Jason E. , Fausto Robert S. , Van As Dirk , Barletta Valentina R. , Forsberg Rene
Published: April 2020

Satellite observations are critical to understanding the mass balance of Greenland’s terrestrial ice (Fig. 1). The Gravity Recovery and Climate Experiment (GRACE) satellite constellation provides monthly gravimetry observations that can directly assess mass balance. Temporal data gaps have begun to appear in the GRACE record due to declining satellite function. In anticipation of further deterioration in the coverage of GRACE, we have explored an empirical relation between ice-surface albedo (or reflectance) and ice-mass balance to fill the gaps in the gravimetry record of Greenland’s ice-mass balance. As surface albedo observed by the moderate-resolution imaging spectroradiometer (MODIS) aboard the Terra satellite is available in near real-time, employing a MODIS-derived proxy permits near real-time estimates of Greenland ice-mass balance. The Geological Survey of Denmark and Greenland has begun employing the albedo – mass-balance relation described here to issue near real-time estimates of Greenland ice-mass balance during the summer melt season at www.polarportal.org.
Effect of coconut shell particles, coir fiber and husk powder on static & dynamic characteristic of polymer composites
Authors: Bhaskar Jitendra , Kumar Satyendra
Published: April 2020

Polymer composites based on agriculture waste or wood industry waste are becoming popular due to better utilization of natural wastes and availability of low cost material for structural and dynamic applications. Availability of coconut shell, coir fiber and husk powder have attracted the development and characterization of coconut reinforced wood plastic composites. Coconut shell particles have capability of introducing the behaviour of particulate composites and coir fibers have the capability of long fibers. But chopping of coir fiber into small sizes and crushing coconut shell into various sizes of particles is the source of managing the structural and dynamic properties. Husk powders consist of very fine and light particles. So, reinforcing husk powder into polymer matrix would enhance the properties of polymer. Various samples consisting of these coconut fruit waste were fabricated for structural and dynamic characterization. Effects of these elements were evaluated. Non-contact type vibration measuring system-Laser Doppler Vibrometer was used for better accuracy in results in dynamic characteristic
Teachers Bridging the Digital Divide in Rural Schools with 1:1 Computing
Authors: Powers Jillian R , Musgrove Ann T , Nichols Bryan H
Published: April 2020

This article shares the findings of a mixed method study about the implementation of 1:1 computing in a small rural Florida school district. Researchers used multiple regression analyses to examine whether Davis’ (1989) Technology Acceptance Model helped explain teachers’ adoption of 1:1. The results indicated that the rural teachers’ perceived ease of use and perceived usefulness of 1:1 were significant predictors of both whole class and individualized instructions with 1:1.  The qualitative phase of the study explored the ways in which the teachers integrated 1:1 into their instructional practices and what factors motivated them to do so. The analysis showed that the teachers used 1:1 largely to foster digital literacy and collaboration as well as to conduct student assessment.  Reasons why the teachers integrated 1:1 into instruction included increasing student engagement, personalizing learning, and facilitating teacher productivity.
PROCEDURES OF FOREIGNIZING CULTURE- SPECIFIC- TERMS IN THE NOBLE QUR’AN
Authors: Ayyad Ghada Rajeh , Tengku Mahadi Tengku Sepora
Published: April 2020

Due to the differences between cultures, translating terms that are related to a specific culture is a hard row to hoe. These terms are deeply rooted in culture. Therefore, it is almost impossible to find an equivalent for such terms. In fact, the task becomes more difficult in case of religious texts such as the Noble Qur’an. This problem has been a major focus of translation theorists and scholars. To solve such a problem, Venuti (1995) introduced the foreignization strategy that aims at transferring both the meaning and the culture of the source language to the target language. This strategy requires the translators to use some translation procedures to apply it. This paper tends to discuss the procedures used by the translators of the Noble Qur’an to foreignize culture-specific-terms.
Privacy Preservation in Big Data using Web Log Analyzer and Attribute Based Encryption
Authors: KRISHNANKUTTY VINIT , Sajal Tanvir , Fiaidhi Jinan
Published: April 2020

Big Data faces many challenges with respect to the security while storing them on a cloud server. There is high chance of getting data viewed by the hacker and the server for performing various
operations. In order to provide high
level of confidentiality and integrity, a new
Encryption technique is introduced known as Attribute Based Encryption (ABE), which instead of making use of the receiver’s public key for
encryption, uses various attributes.
As a future scope, ABE can be combined with Homomorphic Encryption (HE) to
provide a secure transfer of the
identity. In order to provide more privacy of
data, web log Analyzer is used to find out the loopholes and the unauthorized access
to the web data
FACTORS THAT AFFECT WOMEN'S MOTIVATION TO ENTREPRENEURS IN PEKANBARU (CASE STUDY ON VILLA BUNGA ARENGKA RESIDANCE PEKANBARU)
Authors: Febrina Dian
Published: April 2020

The entrepreneurship sector is one of the business fields which is the choice for women to prove their ability in entrepreneurship. This study aims to determine the motivation of women, especially housewives in entrepreneurship in Pekanbaru. The data used are primary and secondary data with qualitative descriptive methods. From the pre-survey conducted on housewives in Villa Bunga Arengka Residance, 27.5% of housewives are involved in entrepreneurship which mostly use online services in marketing their sales products. Independent variables used in this study are independence, capital, emotional and education. While the dependent variable in this study is entrepreneurial motivation of housewives. Data collection using online questionnaires and data analysis techniques using quantitative analysis techniques with multiple linear regression analysis tools.
PENGARUH KONFLIK TERHADAP KINERJA PEGAWAI DI SEKRETARIAT DPRD KABUPATEN SIAK
Authors: Putra Eka
Published: April 2020

This research was conducted at the DPRD Secretariat Of The Siak Regency. The purpose of this study was to determined the effect of conflict on the performance of employees in the DPRD Secretariat of Siak Regency. The population in this study were 44 people from the DPRD Secretariat Of The Siak Regency. While the number of samples set in this study are all of the population of 44 people. Data analysis using simple linear regression analysis with SPSS 16.00 for Windows. Based on a simple linear regression equation Y = 18,397 + 0,656X. Conflict variables (X) with t count (4,336) > t table (2,018) and probability (0,00) <0,05. Then Ho is rejected and Ha is accepted, meaning that the conflict variable has a positive and significant effect on the performance of the DPRD Secretariat Of The Siak Regency. R-square value can be obtained (coefficient of determination) of 0.309 or 30.9%. This shows that conflict contributes to the performance of the Siak Regency DPRD Secretariat employees by 30.9%, while the remaining 60.1% is influenced by other variables outside the variables in this study. The recommendation given that better to be able to create a conducive atmosphere related to the delegation of tasks from a work unit to another work unit in order to facilitate the performance of employees with measurable to avoid accumulating a job in a work unit. In the other side, employees must know and  understand about their task and job desk in order to improve their performance.
Multicentric and multifocal breast cancer diagnostics (review and portfolio)
Authors: Zavizion V. , Kulikova F. , Davlietova N.
Published: April 2020

Breast cancer in (42-48) % of cases is a multicentric or multifocal process. Multicentricity of the tumor is the presence of several tumor foci located in different quadrants (segments) of the breast; multifocality is the presence of several tumor foci in one square or segment.
Multifocal and multicentric cancers evidently are biologically different diseases. The importance of identifying all the foci is that with a multicentric lesion, more radical types of surgical treatment are applied. With cancer monocentricity, organ-preserving surgery is predominantly chosen, and with multicentricity – radical mastectomy. Multifocality not detected at the preoperative stage and, especially, multicentricity is the cause of relapses in more than 40 % of cases.
The purpose of the review is to consider the information content and effectiveness of radiation diagnostic technologies in the aspect of identification of multicentric and multifocal breast cancer.
X-ray mammography, full-format digital X-ray mammography, magnetic resonance imaging, multispiral computed tomography, infrared thermography of transmission optical tomography, sonography, digital tomosynthesis, mammoscintigraphy, electric impedance mammography are considered.
Key words: multifocal and multicentric cancer, mammography, magnetic resonance mammography, multispiral computer tomography, mammoscintigraphy, sonography, electric impedance mammography.
O agrário e o ambiental na gestão de águas
Authors: Martins Rodrigo Constante
Published: April 2020

Temas relativos à governança de recursos ambientais em territórios rurais têm recebido especial destaque na literatura sociológica recente. Envolto na temática das novas ruralidades, o debate sobre a composição de distintos interesses sociais em instâncias de gestão ambiental segue demandando reflexões junto às ciências sociais. Visando contribuir com novos subsídios para tal debate, este artigo apresenta uma pesquisa sociológica sobre conflitos territoriais na gestão das instâncias regionais de política de águas no estado de São Paulo. Através de um estudo de caso, o trabalho discute como distintos interesses agrícolas relacionam-se com instrumentos modernos de regulação pública ambiental – notadamente os Comitês de Bacias Hidrográficas.
Processos de diferenciação dos movimentos sociais do campo no Sul do Brasil:
Authors: Picolotto Everton Lazzaretti
Published: April 2020

Os movimentos sociais do campo têm passado por mudanças significativas nos últimos anos. Buscando contribuir na compreensão destes processos, este artigo objetiva analisar as mudanças recentes nas identidades coletivas, na articulação política e nos projetos dos movimentos que se articulam na Via Campesina e na FETRAF. Estes movimentos tiveram origem comum nos anos de 1970 e 1980, passaram por diferentes fases em suas trajetórias, mantendo certa unidade de ação. Porém, a partir de meados dos anos 1990, suas estratégias de ação diferenciaram-se, ocorrendo mudanças nas identidades e projetos. A FETRAF passou a identificar suas bases como agricultores familiares, adotou a tática de obter maiores espaços na institucionaldade através da busca de sua democratização e, enquanto projeto, tem procurado ressignificar positivamente a pequena agricultura através do reconhecimento desta como “produtora de alimentos para a Nação”. Os movimentos da Via Campesina passaram a identificar suas bases como camponeses, adotaram a tática de construção de resistência ao capitalismo no campo e seus projetos visam fortalecer o modo camponês de produzir e viver e transformar as estruturas socioeconômicas.
Via campesina:
Authors: Niemeyer Carolina Burle de
Published: April 2020

Este artigo visa analisar a gênese e o processo de consolidação da Via Campesina, no período entre 1992, ano de surgimento da rede, e 2005. A Via Campesina é, hoje, a maior rede transnacional de movimentos sociais rurais e não urbanos, formada por um conjunto plural de atores amalgamados sob o conceito amplo de camponês, e pode ser identificada tanto com os “antigos movimentos sociais de classe”, pela base material e pelo interesse em gerar mudanças nas políticas individuais dos estados, como com os “novos movimentos sociais”, por incorporar o foco na identidade e nas especificidades culturais. Os seus ativistas mantêm uma forte relação com a base (os movimentos sociais locais e nacionais), enquanto, simultaneamente, agem em nível transnacional, engajando-se em políticas informacionais e “de accountability”, e empreendendo alianças com outros movimentos sociais contestatórios à globalização neoliberal, em fóruns e coalizões sociais.
Sustentabilidade, ação pública e meio rural no Brasil:
Authors: Bursztyn Marcel , Bursztyn Maria Augusta A.
Published: April 2020

O texto analisa o papel do conceito de sustentabilidade no mundo atual, cuja marca é a rápida transformação. Aspectos relevantes da regulação pública são discutidos, com destaque para a proteção social, do ambiente e da segurança. O tema governança é tratado principalmente para enfatizar os riscos inerentes à adesão apenas formal a preceitos considerados politicamente corretos. Partindo de uma abordagem abrangente, o artigo traz o foco para o debate sobre o meio rural no Brasil. Como consideração final, destaca-se o fato de que a simples inserção do termo sustentabilidade não é garantia de práticas efetivamente sustentáveis.
A articulação das dimensões da sustentabilidade
Authors: Guerra Gutemberg Armando Diniz
Published: April 2020

O termo sustentabilidade passou a ser usado com mais pertinência como substantivo depois de ter sido freqüente o uso do qualificativo de mesma raiz, em particular como crítica ao viés econômico em que se considerava como virtudes aspectos específicos, como volume da produção física e liquidez de recursos monetários que pudesse proporcionar nas trocas entre interessados. Esse termo traz em si mesmo a crítica ao efêmero, inconstante, oscilante, finito e parcial. Traduzido ou associado à durabilidade, permanência, constância, harmonia, infinitude, complexidade, o conceito de sustentabilidade merece tratamento sobre o que traz embutido, fundamentalmente e essencialmente nas dimensões temporal, espacial e temática, em contextos em que a apropriação social impõe a compreensão das relações homem x natureza. O debate envolve mudança de paradigmas no que concerne à postura dos seres humanos diante do mundo e suas possibilidades de usufruto, agora e no mais que se possa estender.
The Ag- and Au-bearing phases in the Escondida epithermal vein, Cerro Moro deposit, Santa Cruz, Argentina
Authors: Mugas Lobos Ana C. , Márquez-Zavalía María Florencia , Hernández Laura B.
Published: April 2020

The Cerro Moro deposit is located at 48°5′55″S, 66°39′1.6″W and 100 m.o.s.l. in Santa Cruz province, southern Argentina. It is a low sulfidation Au-Ag epithermal mineralization hosted by numerous NW–SE structurally controlled quartz veins developed in close spatial and temporal proximity to the products of Jurassic extension and magmatism. The Escondida vein is the most significant mineralized structure, as it hosts the base metal-rich and Au-Ag high grade mineralization. In this vein and the Zoe ore-shoot, ore minerals are abundant (sphalerite, galena, chalcopyrite, acanthite, and less abundant pyrite and marcasite) and frequently related to dark grey, fine-grained quartz with massive, porous, crustiform, and banded textures; variable quantities of fine-grained flakes of muscovite are locally present. The Ag- and Au-bearing mineral association is represented by acanthite, argyrodite, polybasite, pearceite, stromeyerite, mckinstryite, and jalpaite. Abundant acanthite occurs commonly associated with gold and silver; copper enrichments were detected and interpreted as nanoinclusions of Cu-bearing minerals. The occurrence of Se- and Te-enriched minerals (acanthite, argyrodite, polybasite, pearceite, stromeyerite, and mckinstryite), rather than silver selenides and/or tellurides, indicates the presence of reduced mineralizing fluids and may be ascribed to partial substitution of S by Se or Te. Polybasite and pearceite were differentiated by their chemistry. Although the presence of argyrodite in epithermal deposits with silver sulfosalts is relatively common, this first mention in Cerro Moro is highly encouraging for exploration for germanium, a critical element, which is also considered strategic by countries such as the USA and China.
ПРОДУКТИВНА ДІЯ ПІДКИСЛЮВАЧА КОРМУ АСІD STАГ S ВF НА ІНТЕНСИВНІСТЬ РОСТУ ТА ФУНКЦІОНАЛЬНИЙ СТАН ОРГАНІЗМУ МОЛОДНЯКУ КРОЛІВ ЗА ІНТЕНСИВНОГО ВИРОЩУВАННЯ НА М'ЯСО
Authors: Лучин І.С. , Дармограй Л.М.
Published: April 2020

Дослідження проводились у Прикарпатській державній сільськогосподарській дослідній станції. В господарстві застосовується розроблена технологія інтенсивного виробництва кролятини. Генотип кролів, що розводять в господарстві - трьох породні помісі білого велетня, шиншили та фландр (НТШ).

Для досліду, методом пар-аналогів, сформовано 5 груп молодняку кролів по 15 голів в кожній. Першій контрольній групі згодовували корм без підкислювача, 2, 3, 4 і 5- й дослідній групам з вмістом 0,1; 0,3; 0,5; 0,7% підкислювача корму Асіd Stаг S ВF.

Максимальною жива маса однієї голови в 90 добовому віці була в 4-ій дослідній групі, становила 2,967кг де використовувався підкислювач корму АСІD STАГ S ВF в кількості 0,5%, тимчасом, як при використанні цього підкислювача в раціоні годівлі молодняку кролів 2-ї групи (0,1%) була – 2,877 кг, 3-ї групи (0,3%) - 2,89кг, а 5-ї (0,7%) - 2,9 кг.

Середньодобові прирости за період 40-90 діб вищими були в четвертій дослідній групі (0,5%) - 42,1 г, дещо нищими при використанні підкислювача АСІD STАГ S ВF в раціонах дослідних груп кролів: 2-ї (0,1%) - 40,2г; 3-ї (0,3%) - 40,6г; та 5-ї (0,7%) – 40,9г.

Прижиттєвий показник м’ясності – ширина попереку в 3-місячному віці у кролів цих груп становив 5,9см, в 2 і 5-й групах при введені у раціон дослідних кролів підкислювача корму АСІD STАГ S ВF в кількості 1кг і відповідно 7 кг на тону готового корму цей показник становив 5,8 см.

Затрати корму у 1-, 2-, 3-, 5-й групах становили 3,55; 3,48; 3,4 кг і 3,41кг готового корму на 1 кг приросту, тимчасом як в 4-й групі вони були дещо ефективнішими і знаходилися на рівні 3,32 кг.

Кращі показники відгодівельної продуктивності при вводі 5кг підкислювача корму АСІD STАГ S ВF на тону готового корму(4 дослідна група) отримані за рахунок ефективності фізіологічного впливу низькомолекулярних органічних кислот на процес травлення моногастричних, рослиноїдних гризунів, що проявилось у кращому поїданні корму. При цьому зросли відгодівельні показники 4 дослідної групи до кролів до 1контрольної: жива маса в 90 добовому віці на, 190г; середньодобові прирости на 3,9г; ширина попереку на 0,2см; покращилась конверсія корму на 230г.

Зниження вартості корму на 1 ц приросту до 1 контрольної групи (2485 грн), відбувалось до 4 групи: 2 дослідна 2464грн; 3 дослідна 2461грн, 4 дослідна 2457грн. Вартість корму в структурі затрат 5 дослідної групи виявилась найвищою – 2578грн. Така динаміка вплинула на показник чистого прибутку і рентабельність виробництва.
Implementasi Kinematika Robot Lengan Pemindah Barang Dua Sendi (2 DOF) dengan Metode Kinematika Maju Untuk Menentukan Koordinat dalam Pemindahan Sebuah Object
Authors: Ardhi Setya , Syahiidutama Alamsyah , Sugiono Judi Prajetno , Sutiksno Hari
Published: April 2020

Pada industri rumahan minuman berwarna pekerja dituntut untuk dapat memilah botol berwarna secara cepat dan tepat. Untuk mengatasi masalah ini direncanakan dan dibuat alat pemilah botol berdasarkan warna dengan bantuan robot lengan. Sensor yang dipakai untuk pemilah warna menggunakan LED RGB dan resistor LDR yang mampu memilah 9 warna yaitu : merah, kuning, hijau, biru, merah muda, putih, ungu, sian, dan hitam dengan memanfaatkan robot lengan sebagai pemilah.

Robot didesain yang diadaptasi dari robot lengan me arm v1.0 dengan dimensi 15 cm x 19 cm, dan tinggi 50 cm. Untuk menjalankan alat ini botol berwarna diletakkan pada tempat sensor warna, setelah warna terdeteksi lengan robot akan bergerak mengambil dan meletakkan botol yang terdeteksi ke dalam wadah yang ditandai dengan reed switch (sensor magnet). Desain robot lengan menerapkan metode forward kinematic untuk mendapatkan titik koordinat robot.

Percobaan untuk menentukan titik koordinat robot memberikan hasil sebagai berikut: (19,15 cm, 8,92 cm) saat istirahat, (23,49 cm, 33,55 cm) saat mengangkat botol, dan (35,35 cm, 0 cm) saat mengambil botol. Tingkat keberhasilan sensor warna dan lengan robot dalam memilah botol berdasarkan warna adalah sebesar 74,07%. Lama proses untuk melakukan pemilahan botol berwarna dengan beban 100 ml adalah 40,2 detik untuk satu botol.
Website Gereja dengan Framework Laravel
Authors: Honggara Eric Sugiharto
Published: April 2020

Salah informasi adalah sebuah hal yang masih sering terjadi dikarenakan terlalu banyak informasi dan tidak memiliki sumber informasi acuan yang tepat dikarenakan banyak informasi yang beredar. Hal ini terjadi pada Gereja Reformed Injili Indonesia di mana jemaat mereka datang pada waktu yang salah untuk mengikuti acara karena informasi yang beredar salah atau telah dirubah karena suatu sebab.

      Sehingga untuk menyelesaikan masalah tersebut diperlukan sebuah situs web sebagai acuan informasi mengenai kegiatan atau acara pada gereja. Metode pembangunan  menggunakan prototype dikarenakan pihak gereja belum pernah membangun situs web dan membutuhkan panduan dalam membangun. Framework yang digunakan adalah laravel agar lebih efisien dalam membangun sebuah situs web. Situs yang dibangun akan berupa situs dinamis dengan penyimpanan data menggunakan database, agar pihak gereja dapat dengan leluasa melakukan perubahan dalam jadwal acara.

      Dengan adanya situs yang dibangun untuk gereja, diharapkan informasi kepada jemaat akan diambil dari stus web. Sehingga bila ada perubahan maka perubahan itu akan langsung terjadi dan dapat menjadi acuan bagi jemaat yang mencari info kegiatan. Pembangunan situs web menggunakan laravel dan metodologi prototyping membantu user dalam memperoleh gambaran mengenai situs web yang dibangun dan mereka dapat melakukan penyesuaian sesuai dengan kebutuhan user.
Measuring the Hubble Constant from the Cooling of the CMB Monopole
Authors: Abitbol Maximilian H. , Hill J. Colin , Chluba Jens
Published: April 2020

The cosmic microwave background (CMB) monopole temperature evolves with the inverse of the cosmological scale factor, independent of many cosmological assumptions. With sufficient sensitivity, real-time cosmological observations could thus be used to measure the local expansion rate of the universe using the cooling of the CMB. We forecast how well a CMB spectrometer could determine the Hubble constant via this method. The primary challenge of such a mission lies in the separation of Galactic and extra-Galactic foreground signals from the CMB at extremely high precision. However, overcoming these obstacles could potentially provide an independent, highly robust method to shed light on the current low-/high-z Hubble tension. An experiment with 3000 linearly spaced bins between 5 GHz and 3 THz with a sensitivity of 1 

per bin, could measure H
0 to 3% over a 10 yr mission, given current foreground complexity. This sensitivity would also enable high-precision measurements of the expected ΛCDM spectral distortions, but remains futuristic at this stage.
Magnetars from Neutron Star–White Dwarf Mergers: Application to Fast Radio Bursts
Authors: Zhong Shu-Qing , Dai Zi-Gao
Published: April 2020

It is widely believed that magnetars could be born in core-collapse supernovae (SNe), binary neutron star (BNS) or binary white dwarf (BWD) mergers, or accretion-induced collapse (AIC) of white dwarfs. In this paper, we investigate whether magnetars could also be produced from neutron star–white dwarf (NSWD) mergers, motivated by FRB 180924-like fast radio bursts (FRBs) possibly from magnetars born in BNS/BWD/AIC channels suggested by Margalit et al. (2019). By a preliminary calculation, we find that NSWD mergers with unstable mass transfer could result in the NS acquiring an ultra-strong magnetic field via the dynamo mechanism due to differential rotation and convection or possibly via the magnetic flux conservation scenario of a fossil field. If NSWD mergers can indeed create magnetars, then such objects could produce at least a subset of FRB 180924-like FRBs within the framework of flaring magnetars, since the ejecta, local environments, and host galaxies of the final remnants from NSWD mergers resemble those of BNS/BWD/AIC channels. This NSWD channel is also able to well explain both the observational properties of FRB 180924-like and FRB 180916.J0158+65-like FRBs within a large range in local environments and host galaxies.