bluuebunny/crossref_metadata_2025 huggingface dataset:
Design and fabrication of a dual-polarized, dual-band reflectarray using optimal phase distribution
Authors: ARYANIAN IMAN , AHMADI ARASH , RABBANI MEHDI , HASSIBI SINA , KARIMIPOUR MAJID
Published: March 2019

Two main factors limiting the reflectarray bandwidth are different phase slopes versus the frequency at every point on the aperture and the phase limitation of comprising elements at different frequencies. Considering these two factors, a novel design method is proposed to implement a dual-band, dual-polarized reflectarray antenna in X and Ku bands. An optimization algorithm is adopted to find the optimum phase for each unit cell on the reflectarray aperture. The best geometrical parameters of the phasing elements are suggested based on the phase variation of the element versus frequency and the element position with respect to the antenna feed. Many different classes of phasing elements with identical base structures are investigated to provide a lookup table for the optimization algorithm. The optimum phases are obtained so that two collimated beams are realized within the frequencies of 10.95 GHz to 11.7 GHz and 14 GHz to 14.5 GHz with vertical and horizontal polarizations, respectively. From the experimental results, the peak directivity of 27.1 dBi and 30.6 dBi, aperture efficiency of 42% and 67%, and cross-polarization level of less than –15 dB and –20 dB were obtained in the lower and upper bands, respectively.
Fitting a recurrent dynamical neural network to neural spiking data: tackling the sigmoidal gain function issues
Authors: DORUK REŞAT ÖZGÜR
Published: March 2019

This is a continuation of a recent study (Doruk RO, Zhang K. Fitting of dynamic recurrent neural network models to sensory stimulus-response data. J Biol Phys 2018; 44: 449-469), where a continuous time dynamical recurrent neural network is fitted to neural spiking data. In this research, we address the issues arising from the inclusion of sigmoidal gain function parameters to the estimation algorithm. The neural spiking data will be obtained from the same model as that of Doruk and Zhang, but we propose a different model for identification. This will also be a continuous time recurrent neural network, but with generic sigmoidal gains. The simulation framework and estimation algorithms are kept similar to that of Doruk and Zhang so that we can have a solid base to compare the results. We evaluate the estimation performance in two different ways. First, we compare the firing rate responses of the original and the estimated model. We find that responses of both models to the same stimuli are similar. Secondly, we evaluate variations of the standard deviations of the estimates against a number of samples and stimulus parameters. They show a similar pattern to that of Doruk and Zhang. We thus conclude that our model serves as a reasonable alternative provided that firing rate is the response of interest (to any stimulus).
La trayectoria italiana de Julio Aquiles en el círculo de Rafael
Authors: Martínez Jiménez Nuria
Published: March 2019

En este artículo se presentan noticias inéditas sobre la vida y obra del artista italiano Julio Aquiles, pintor formado en el taller de Giovanni da Udine en Roma y colaborador de Perino del Vaga en Génova, que, tras su intervención en los palacios de Francisco de los Cobos y en la Casa Real Vieja de la Alhambra, acabó convirtiéndose en uno de los artistas más influyentes en la pintura mural del Renacimiento en España
“Escribimos libertad con mano encadenada”. Notas sobre una pintura realizada por Agustín Ibarrola en la cárcel de Burgos
Authors: De Haro García Noemi
Published: March 2019

Las pinturas realizadas clandestinamente por Agustín Ibarrola en la Prisión Central de Burgos entre 1962 y 1965 fueron expuestas por toda Europa y reproducidas en diversas publicaciones en apoyo a campañas pro-amnistía. Este artículo estudia una de estas pinturas, la única de todas ellas que se ha podido localizar hasta la fecha.
Una nueva especie de Paradoneis Hartman, 1965 (Annelida: Paraonidae) procedente del NE de la península Ibérica (SE del golfo de Vizcaya, NE del océano Atlántico)
Authors: Martínez Julián
Published: March 2019

Una especie nueva del género Paradoneis Hartman, 1965 (Annelida, Paraonidae) ha sido identificada en fondos blandos del País Vasco (NE de la península Ibérica, SE del golfo de Vizcaya). La nueva especie se caracteriza principalmente por su pequeña talla, tres segmentos setígeros prebranquiales, cinco (excepcionalmente seis) pares de delgadas branquias simples, notosedas modificadas liriformes, y una región pigidial con siete cirros. En el presente artículo se realiza una descripción, ilustración y discusión de la nueva especie, aportándose también información sobre su ecología y distribución. Complementariamente, se aporta una clave de identificación de todas las especies conocidas de Paradoneis. El Material Tipo ha sido depositado en el Museo Nacional de Ciencias Naturales, Madrid.
La pesada mochila del origen de clase. Escolaridad y movilidad intergeneracional de clase en Argentina, Chile y México
Authors: Solís Patricio , Dalle Pablo
Published: March 2019

Analizamos el papel de la escolaridad en la movilidad intergeneracional de clase en Argentina, Chile y México. Para entender el papel de la escolaridad es importante identificar sus efectos como mediadora, ecualizadora y atenuante. Especificamos conceptual y metodológicamente estos efectos y generamos indicadores empíricos para ellos, usando datos de encuestas nacionales de movilidad social. Nuestros resultados indican que la escolaridad es un fuerte mediador en los tres países. Sin embargo, su papel como ecualizador varía entre países y no existe de un papel significativo como atenuante de la asociación entre orígenes y destinos de clase. Por tanto, cualquier interpretación simplista del efecto de la escolaridad en la movilidad de clase en América Latina se confrontará con una realidad más compleja, en la que la escolaridad es claramente una variable interviniente importante, pero tiene una contribución limitada en la neutralización de los efectos de los orígenes en los destinos de clase.
Meritocracia y desigualdad económica: Percepciones, preferencias e implicancias
Authors: Castillo Juan C. , Torres Alex , Atria Jorge , Maldonado Luis
Published: March 2019

La idea de meritocracia está relacionada con la distribución de bienes y beneficios basada en el talento y esfuerzo individual, constituyendo un principio que legitima la distribución desigual de los recursos en sociedades modernas. Pese a las constantes referencias a la meritocracia en la investigación de desigualdad y estratificación social en sociología, existen pocos intentos conceptuales y empíricos que busquen entender hasta qué punto los individuos perciben y prefieren la meritocracia, así como también sus consecuencias. La presente investigación propone un marco conceptual y empírico para el estudio de las percepciones y preferencias meritocráticas que, posteriormente, es relacionado con una serie de variables relativas a la desigualdad social. Utilizando datos de la encuesta chilena “Justicia social y participación ciudadana” (N= 1.245), los resultados del análisis sugieren que las preferencias y percepciones de la meritocracia son constructos distintos y que quienes perciben un adecuado funcionamiento de la meritocracia también perciben menos desigualdad social.
Calidad de respuesta y modo de administración del cuestionario
Authors: Díaz de Rada Vidal
Published: March 2019

En este trabajo se lleva a cabo una comparación entre una encuesta presencial y otra telefónica a teléfonos fijos realizada en Andalucía utilizando dos muestras equivalentes. El cuestionario tiene preguntas de respuesta única con disposición vertical de las respuestas y preguntas de batería. En las primeras se compara la presencia de efectos de respuesta (primacía y recencia) y el número de respuestas “no sabe”. La encuesta telefónica presenta una menor falta de respuesta parcial y la presencia de un efecto recencia en preguntas con disposición vertical con 4 y 5 categorías.
En las preguntas de batería se comprueba, además, si las encuestas telefónicas tienen un menor grado de diferenciación en las escalas, una mayor elección de respuestas extremas, así como una mayor aquiescencia. Este fenómeno se detecta en las preguntas de 5 y 10 categorías de respuesta, no detectando un efecto primacía en preguntas administradas con tarjeta.
Elección escolar y selección de familias: reproducción de la clase media alta en Santiago de Chile
Authors: Gayo Cal Modesto , Otero Cabrol Gabriel , Méndez María Luisa
Published: March 2019

La elección de colegio ha sido identificada como un momento clave en el proceso de reproducción social de la clase media alta. En Chile, en las últimas décadas, el modelo escolar ha dependido en su mayor parte, de lo que se entiende como la elección del colegio por parte de las familias. Este modelo de política pública ha convivido con la selección de los estudiantes que han hecho, a su vez, las instituciones de enseñanza. En este artículo aportamos algunos hallazgos novedosos que indican que la superación de las barreras de entrada a los colegios, principalmente a los subvencionados y privados, ha tenido una relación particularmente fuerte con la disponibilidad que las familias tienen de capital económico junto con su identificación con el catolicismo y sus prácticas religiosas. Los capitales social, cultural y educativo, junto a la clase social, también muestran diferencias importantes.
Far-Infrared Drying Effects onto the Physical Characteristics of Aquilaria malaccensis Leaves
Authors: Alwi Habsah , Zain Nurul Shazana Mohd , Abidin Hanafiah Zainal , Jaafar Jefri , Hamid Ku Halim Ku
Published: March 2019

Drying also known as dehydration is commonly used as a unit operation in herbs manufacturing industry to preserve the food product by removing the moisture content in the herbs. Unfortunately, most drying process degraded the product quality because the feedstock is exposed to a very high temperature within a long period of time by using conventional oven Therefore this research has focused on the alternatives technique in overcoming the degradation of nutrients by applying the irradiation concepts. The objectives of this research were to investigate the effect of drying onto the physical properties of Aquilaria Malaccensis leaves by using fabricated far-infrared dryer. The experiments were conducted at various temperature ranging from 40, 50 and 60°C. The color difference and the moisture content of the leaves before and after drying were examined. The color measurements data shows that at 60°C, the brightness and the chroma were the highest. On the other hand, the hue angles were the highest for 60°C when the time was reached 100 minutes.
Musa Sapientum (Banana) Peels as Green Corrosion Inhibitor for Mild Steel
Authors: Rosli Nor Roslina , Yusuf Suriatie Mat , Sauki Arina , Razali Wan Muhamad Razlan Wan
Published: March 2019

The inhibition efficiency of Musa sapientum (banana) peel extracts at different concentrations and temperatures on mild steel corrosion in acidic solution of 1 M hydrochloric acid (HCl) were investigated by using weight loss method. The banana peel extract concentrations were tested from 300 to 500 ppm at temperature range between 25°C to 60°C. The performance of banana peel extract as an inhibitor was found compatible in the tested solution. The corrosion rates, which were calculated from the weight loss data, showed that the inhibition efficiency of the extract increased from 86.9% to 89.0% as the concentration of banana peel extract increased from 300 ppm to 500 ppm. It was also observed that the inhibition efficiency decreased as the temperature was increased from 25°C to 60°C. Characterization of the peel extract by using gas chromatography-mass spectrometry (GC-MS) has detected the presence of bioactive compounds which are responsible for the corrosion inhibition and adsorption properties on mild steel surface. Eleven major compounds have been identified as having corrosion inhibition properties. FTIR analysis confirmed the presence of functional groups of alcohols, alkanes, carbonyls, aromatics, ethers, and esters that can prevent corrosion by adsorption on steel surface.
Investigation of Corrosion Mechanisms in a Continuous Catalytic Regeneration (CCR) Platformer Unit
Authors: Rusli Nur Balqis , Yaakob Najmiddin , Savory Robert Mikhail
Published: March 2019

— Corrosion is prevalent throughout the world, none less so than in the oil and gas industry. Managing and mitigating corrosion in refining complexes is of paramount importance in order to prevent undesirable consequences such as major fires, explosions and Boiling Liquid Expanding Vapor Explosion (BLEVE) due to Loss of Primary Containment caused by the thinning and ultimate failure of pipelines and vessel walls. Analysis of a platformer unit at a Malaysian refinery has identified the occurrence of thermal fatigue and erosion corrosion on the Vent Gas Tower (VGT) Caustic Circulation line, which in turn has led to the excessive degradation of the walls of a venturi scrubber and the 8’’ caustic circulation line with initial thickness of 12.70mm. The rate of corrosion (0.88 mm/year) of the 8’’ caustic circulation line exceeds the standard allowable carbon steel corrosion rate (0.1 mm/year) as stated in API 571 Damage Mechanisms Affecting Fixed Equipment in the Refining Industry. This indicates that the circulation line has significant potential to fail which would lead to a major HSE incident. Based on these findings it is recommended that the refinery in question modifies the line by increasing the thickness of the line and include a cooling system to reduce temperature swing (ΔT) to below 93°C. Besides that, it is suggested that the implementation of Corrosion-Resistant Alloys (CRA) is conducted on the line. According to ASME B31.3 and supported by ASTM A 193, the line can be replaced with nickel-based alloy, alloy 800H and killed carbon steel which have high resistivity to corrosion than carbon steel. However, more comprehensive studies need to be conducted to identify the viable mitigation methods that are suitable to be implemented on the Vent Gas Tower (VGT) Caustic Circulation line.
Erythrocytosis and fatigue fractures associated with hepatoblastoma in a 3-year-old gelding
Authors: Tirosh-Levy Sharon , Perl Shmuel , Valentine Beth A. , Kelmer Gal
Published: March 2019

Hepatoblastoma was diagnosed in a 3-year-old Thoroughbred gelding presented with forelimb lameness with bilateral fatigue fractures of the proximal third metacarpal bones. An abdominal mass was detected on ultrasound examination of the abdomen. Absolute erythrocytosis was diagnosed after clinical and haematological evaluation. The fractured metacarpal bones were surgically removed but complications after surgery were fatal. The liver mass was diagnosed as a hepatoblastoma based on histology and immunochemical staining. The combination of hepatoblastoma and fatigue fractures has not been described previously in horses. A potential link between the hepatic and orthopaedic pathologies is hypothesised.
Table of Contents Vol 65, No 1 (2018)
Authors: Office Editorial
Published: March 2019

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Diagnostic test accuracy: application and practice using R software
Authors: Shim Sung Ryul , Kim Seong-Jang , Lee Jonghoo
Published: March 2019

The objective of this paper is to describe general approaches of diagnostic test accuracy (DTA) that are available for the quantitative synthesis of data using R software. We conduct a DTA that summarizes statistics for univariate analysis and bivariate analysis. The package commands of R software were “metaprop” and “metabin” for sensitivity, specificity, and diagnostic odds ratio; forest for forest plot; reitsma of “mada” for a summarized receiver-operating characteristic (ROC) curve; and “metareg” for meta-regression analysis. The estimated total effect sizes, test for heterogeneity and moderator effect, and a summarized ROC curve are reported using R software. In particular, we focus on how to calculate the effect sizes of target studies in DTA. This study focuses on the practical methods of DTA rather than theoretical concepts for researchers whose fields of study were non-statistics related. By performing this study, we hope that many researchers will use R software to determine the DTA more easily, and that there will be greater interest in related research.
A Picture of Bias Crime in New South Wales
Authors: Mason Gail
Published: March 2019

Bias Crime is crime where the victim is targeted because of an aspect of their identity, including race, ethnicity, religion or sexuality. It is an extreme manifestation of cultural tension and conflict. Bias crime remains under-researched in Australia. While there has been some investigation into different types of bias crime, such as racist and homophobic offences, there is little analysis of the nature and extent of bias crime across these categories. For the first time, this article presents the results of a study into official records of bias crime held by the New South Wales Police Force. The study shows that crimes motivated by bias based on the victim’s race/ethnicity and religion are by far the most common types of bias crime reported in NSW. People from Asian, Indian/Pakistani and Muslim backgrounds are the most likely victims to report bias crime. The study also shows that there is much work to be done to encourage bias crime reporting amongst marginalised communities and improve the capacity of police to identify and accurately record bias crime. We argue that civil society has an important role to play in building partnerships with police to achieve positive change in the policing of bias crime.
Solar-eclipse-induced perturbations at mid-latitude during the 21 August 2017 event
Authors: Adekoya Bolarinwa J. , Adebesin Babatunde O. , David Timothy W. , Ikubanni Stephen O. , Adebiyi Shola J. , Bolaji Olawale S. , Chukwuma Victor U.
Published: March 2019

Abstract. A study of the response of some ionospheric parameters and their relationship
in describing the behaviour of ionospheric mechanisms during the solar
eclipse of 21 August 2017 is presented. Mid-latitude stations located along
the eclipse path and with data available from the Global Ionospheric radio
Observatory (GIRO) database were selected. The percentage of obscuration at
these stations ranges between 63 % and 100 %. A decrease in electron
density during the eclipse is attributed to a reduction in solar radiation
and natural gas heating. The maximum magnitude of the eclipse consistently
coincided with a hmF2 increase and with a lagged maximum decrease in
NmF2 at the stations investigated. The results revealed that the
horizontal neutral wind flow is as a consequence of the changes in the
thermospheric and diffusion processes. The unusual increase and decrease in
the shape and thickness parameters during the eclipse period relative to the
control days points to the perturbation caused by the solar eclipse. The
relationships of the bottomside ionosphere and the F2 layer
parameters with respect to the scale height are shown in the present work as
viable parameters for probing the topside ionosphere during the eclipse.
Furthermore, this study shows that in addition to traditional ways of
analysing the thermospheric composition and neutral wind flow, proper
relation of standardized NmF2 and hmF2 can be conveniently
used to describe the mechanisms.
Light-dependent calcification in Red Sea giant clam Tridacna maxima
Authors: Rossbach Susann , Saderne Vincent , Anton Andrea , Duarte Carlos M.
Published: March 2019

Abstract. Tropical giant clams of the Tridacninae family, including the species Tridacna maxima, are unique among bivalves as they live in a symbiotic relationship with unicellular algae and generally function as net photoautotrophic. Light is therefore crucial for these species to thrive. Here we examine the light-dependency of calcification rates of T. maxima in the Central Red Sea as well as the patterns of its abundance with depth in the field. Red Sea T. maxima show highest densities in a depth of 3 m with 0.82 ± 0.21 and 0.11 ±  0.03 individuals m−2 (mean ± SE) at sheltered and exposed sites, respectively. Experimental assessment of net calcification (μmol CaCO3 cm−2 h−1) and gross primary production (μmol O2 cm−2 h−1) under seven light levels (1061, 959, 561, 530, 358, 244 and 197 μmol quanta m−2 s−1) showed net calcification rates to be significantly enhanced under light intensities corresponding to a water depth of 4 m (0.65 ± 0.03 μmol CaCO3 cm−2 h−1; mean ± SE), while gross primary production was 2.06 ± 0.24 μmol O2 cm−2 h−1 (mean ± SE). We found a quadratic relationship between net calcification and tissue dry-mass (DM in gram), with clams of an intermediate size (about 15 g DM), showing the highest calcification. Our results show that the Red Sea giant clam T. maxima stands out among bivalves as a remarkable calcifier, displaying calcification rates comparable to other tropical photosymbiotic reef organism, such as corals.
Technical note: Comparison between two generalized Nash models with a non-zero initial condition
Authors: Yan Baowei , Yuan Aoyu , Li Zhengkun , Cao Chen
Published: March 2019

Abstract. Initial condition can impact the forecast precision especially in a real-time forecasting stage. The discrete linear cascade model (DLCM) and the generalized Nash model (GNM), expressed in different ways, are both the generalization of the Nash cascade model considering the initial condition. This paper investigates the relationship and difference between DLCM and GNM both mathematically and experimentally. Mathematically, the main difference lies in the way to estimate the initial storage state. In the case of n = 1, it was shown theoretically that the difference between the two models is whether the current outflow is estimated (DLCM) or observed (GNM). The GNM is the unique solution of the Nash cascade model with a non-zero initial condition, while the DLCM is an approximate solution and it can be transformed to the GNM when the initial storage state is calculated by the approach suggested in the GNM. At last, a test example obtained by the solution of the Saint-Venant equations is used to illustrate this difference. The results show that the GNM provides a unique solution while the DLCM has multiple solutions depending on the estimate accuracy of the current state.
Load-resistance analysis: An alternative approach to tsunami damage assessment applied to the 2011 Great East Japan tsunami
Authors: Suppasri Anawat , Pakoksung Kwanchai , Charvet Ingrid , Chua Constance Ting , Takahashi Noriyuki , Ornthammarath Teraphan , Latcharote Panon , Leelawat Natt , Imamura Fumihiko
Published: March 2019

Abstract. Tsunami fragility functions describe the probability of structural damage to tsunami flow characteristics. Fragility functions developed from past tsunami events (e.g. 2004 Indian Ocean tsunami) are often applied directly, without modifications, to other areas at risk of tsunami for the purpose of damage and loss estimations. Consequentially, estimates carry uncertainty due to disparities in construction standards and coastal morphology between the specific region for which the fragility functions were originally derived and the region where they were being used. The main objective of this study is to provide an alternative approach to assessing tsunami damage, especially for buildings in regions where previously developed fragility functions do not exist. A damage assessment model is proposed in this study, where load-resistance analysis is performed for each building by evaluating hydrodynamic forces, buoyancies and debris impacts and comparing them to the resistance forces of each building. Numerical simulation was performed in this study to reproduce the 2011 Great East Japan tsunami in Ishinomaki city, which is chosen as a study site. Flow depths and velocities were calculated for approximately 20 000 wooden buildings in Ishinomaki city. Similarly, resistance forces (lateral and vertical) are estimated for each of these buildings. The buildings are then evaluated for its potential to collapse. Results from this study reflect a higher accuracy in predicting building collapse when using the proposed load-resistance analysis as compared to previously developed fragility functions in the same study area. Damage is also observed to have likely occurred before flow depth and velocity reach maximum values. With the above considerations, the proposed damage model might well be an alternative for building damage assessments in areas which have yet to be affected by modern tsunami events.
Analysis of trip generation rates in residential commuting based on mobile phone signaling data
Authors: Shi Fei , Zhu Le
Published: March 2019

In this paper, mobile phone signaling data are first processed to extract information such as the trip volume and spatial distribution from the starting point to the termination point. This information is then used to identify the residential and employment locations of users. Next, multiple Thiessen polygons based on cell towers are aggregated into Traffic Analysis Zones (TAZs) to minimize differences between the actual cell tower coverage and the theoretical coverage. Then, based on TAZ cluster analysis involving transport accessibility and commuting population density, multiple stepwise regression is applied to obtain the commuting trip production rates and attraction rates for overall residential land and each subdivided housing type during the peak morning hours. The obtained commuting trip generation rates can be directly applied to local transport analysis models. This paper suggests that as information and data sharing continue, mobile phone signaling data will become increasingly important for use in future trip rate research.
Perenniporia mopanshanensis sp. nov. from China
Authors: Zhao Chang-Lin , Ma Xiang
Published: March 2019

A new poroid, white-rot, wood-inhabiting fungal species, Perenniporia mopanshanensis, is proposed based on morphological and molecular characters. This species from Yunnan Province, China, is characterized by resupinate basidiomes with a cream to buff to straw pore surface, dimitic
hyphal system with strongly dextrinoid, unbranched, interwoven skeletal hyphae, and ellipsoid, non-truncate basidiospores (5.5–6.5 × 4–5 μm) with hyaline, distinctly thick, smooth, strongly dextrinoid walls. Phylogenetic analyses of ITS+nLSU sequences showed that P.
mopanshanensis is a distinct taxon in the Perenniporia sensu stricto clade and is sister to P. bannaensis.
New records of Hymenoscyphus, Parascutellinia, and Scutellinia for Turkey
Authors: Keleş Ali
Published: March 2019

Three ascomycetous macrofungi—Hymenoscyphus kathiae, Parascutellinia violacea, and Scutellinia crinita—are recorded for the first time from Turkey, with P. violacea serving also the first record of the genus for the country. The species are described
briefly and accompanied by photographs illustrating their macro- and micro-morphologies.
Does Ethics Reward on Public Markets: Empirical Evidences Ten Years After the Great Recession
Authors: Landi Catello Giovanni , Rapone Valerio , Tuccillo Danilo , Rey Andrea
Published: March 2019

In the aftermath of the last Great Recession in 2007, firms’ commitment to social responsibility and sustainability started to be considered a corporate leverage to make extra-returns as well as to improve corporate reputation on institutional markets. This in turn has implied a lower uncertainty among investors and a higher trust from stakeholders’ categories, rising virtuous firms’ returns to over-perform their less responsible peers. Hence, this paper investigates the positive externalities of CSR on Italian stock exchange market, focusing on Blue Chips’ financial performance over the ten years post-crisis. In particular, we examined whether a listed company has been rewarded by its stakeholders over a high volatility periods, leveraging on CSR and Sustainability issues. Empirical findings highlight, ceteris paribus, two implications in regards to the impact of sustainability rating on corporate financial health. Indeed, the effect of CSR and corporate sustainability improves significantly companies’ earning performance (Return on Asset), although firms do not benefit from economic outperformances (Earning per Share) on stock exchange market.
An Empirical Analysis of Underpricing and Oversubscription between Venture-Backed IPO and Non-Venture-Backed IPO in Italy
Authors: Rija Maurizio
Published: March 2019

Over the years, in order to meet the financial needs of companies, new forms of financing alternative to the traditional banking channel have been developed. These include the institutional investment in risk capital, which is defined by the terms Anglo-Saxon venture capital and private equity. In this empirical analysis, the divestment of the venture capitalist's participation will be emphasized by listing the invested companies in the stock market, a channel not widely used in Italy, but highly desired because of the various benefits it can bring. Analyzing the IPOs that were carried out in Italy on the main list from 2007 to 2017, we will verify what is described in the economic literature, which is that a venture capitalist, by performing a certification role, is able to reduce the information asymmetries presented in the listing process and, as a result, contain underpricing and improve oversubscription. By using the presence of a venture capitalist within the venture capital as the only variable, it has been observed that on average the underpricing and oversubscription of the venture-backed IPOs slightly differentiate from the non-venture-backed IPOs. However, the study carried out shows that this difference, although not significant, turns out to be very interesting.
Economic Cost Analysis of New Energy Vehicle Policy -Empirical Research Based on Beijing’s Data
Authors: Ju Xuenan , Sun Baowen , Jin Jieying
Published: March 2019

In recent years, in order to improve Beijing's air quality and reduce vehicle emissions, the Beijing Municipal Government promotes the popularization of new energy vehicles through purchase subsidies, plate lottery, and driving restriction policy. However, the increase in the number of new energy vehicles and the increase in the number of vehicles travelling on roads have intensified the traffic pressure in Beijing. Traffic congestion has increased the emissions of motor vehicle exhaust in turn, resulting in higher socio-economic costs. Based on the actual data of Beijing, this paper quantitatively analyzes the economic cost of new energy vehicle policies by discussing the impact of current new energy vehicle policies on time, energy consumption and tail gas cost. Empirical results show that during the implementation period of the new energy vehicle policy, time cost and tail gas cost increase, energy consumption cost decreases, and the overall economic cost of the policy implementation period increases from 50 million yuan to 321 million yuan.
Factors of the Internal Environment and Their Impact on Organizational Excellence in the Public Universities in Southern Jordan from the Point of View of Workers
Authors: Al – Rawashdeh Eyad Taha
Published: March 2019

This study aimed at analyzing the internal environment factors and their impact on organizational excellence in the public universities in southern Jordan from the point of view of the workers.

To achieve the objectives of the study, a questionnaire was developed to cover the study variables. The study was conducted on a community consisting of (4) public universities distributed in the southern governorates: Mu'tah University, Tafila Technical University, Al Hussein Bin Talal University, the University of Jordan-Aqaba Branch.

Administrative employees at the middle administrative levels reached (301). The researcher conducted a comprehensive survey of the study community through using the analytical descriptive statistic methods, by using the Statistical Package for the Social Sciences (SPSS).

The study reached a number of results, most important are: The general arithmetic mean of the respondents' perceptions of the dimensions of the internal environment factors in public universities in southern Jordan has reached a medium rating. Also, the general arithmetic mean of the respondents' perceptions of the dimensions of organizational excellence in the public universities in southern Jordan reached a medium rating. Among other results, there is a statistically significant positive relationship between the independent variable (internal environment factors), and its different dimensions and the dependent variable (organizational excellence) and its different dimensions.

In light of the results of the study, the study recommended a number of recommendations, most important are: the necessity of preparing a working environment and its factors and the appropriate conditions that increase the organizational excellence, paying attention to developing the capabilities of the employees and training them according to studied scientific programs as well as the need to increase the volume of expenditure on research and development activities, because spending on such activities has become an investment spending.
TRIBOLOGICAL PROPERTIES OF Al2O3/ZrO2 SINTERED CERAMICS
Authors: WIĄZANIA Grzegorz , KOT Marcin , WOJTECZKO Agnieszka , PĘDZICH Zbigniew
Published: March 2019

The paper presents mechanical and tribological properties of Al2O3/ZrO2 composite sinters with different proportions of Al2O3 and ZrO2 phases. These materials are commonly used in dry friction contact due to relatively low manufacturing costs of even complex shapes of products and the possibility of working at elevated temperatures. The tests were carried out by the ball-on-disc method at temperatures of 20, 150, 300, and 500°C. A ball made of Al2O3 was used as a counterpart. The results were compared with the following sintered mono-phase materials: Al2O3(alumina) and tetragonal yttria-stabilized ZrO2 polycrystallines (Y-TZP). The tests showed the significantly better properties of composite materials.
THEORY VERSUS PRAXIS. RESEARCH AS TOOL IN THE AUDIENCE DEVELOPMENT AT THE JÓZEF
PIŁSUDSKI MUSEUM IN SULEJÓWEK
Authors: Nessel-Łukasik Beata
Published: March 2019

Research into the public is a subject of
academic investigation, marketing campaigns, and also of
museologists’s interest. As a result of changes occurring
in culture, these involving Polish museology as well, a
closer knowledge of the public’s needs and expectations
has become today one of the tasks also challenged by
museums. However, as the initial investigation conducted
by the National Institute for Museums and Public Collections
(NIMOZ) in the 2017 research into the public demonstrates,
rare application of the knowledge of museum visitors has
seldom translated the results of this research into the
practical approach of definite institutions.
Several reasons that make museologists refrain from
applying the theories used in social sciences to museums can
be named. Some of them result from the lack of experience,
others from staff shortages; they, however, impede seeing
in social research a tool useful for planning changes and for
opening up to the community. Nevertheless, despite all these
difficulties it can be observed that promoting the research
into the public among museologists boosts the impact of the
theories on their practical approaches in respective museums.
Sharing with other professionals the examples illustrating
definite solutions that can be applied in this respect, along
with the factual support by NIMOZ providing national
research, trainings, and publications, have gradually and
effectively been increasing the influence of the knowledge
of the public on museum’s operating in social life. An
interesting instance of such a process can be seen in e.g.
the programme of the research into the public implemented
by the Józef Piłsudski Museum in Sulejówek.
Eksemplet som tænkemaskine: Med særligt henblik på Slavoj Žižek – The Example as Machine for Thought: The Case of Slavoj Zizek
Authors: Hansen Brian Benjamin
Published: March 2019

Når vi bruger eksempler, er det ofte for at tydeliggøre eller illustrere noget. Artiklens antagelse er imidlertid, at eksempler også kan bruges til at tænke med. Som centralt omdrejningspunkt har artiklen den slovenske filosof Slavoj Žižek, der meget ofte bruger eksempler på den måde: Žižeks eksempler udfordrer de begreber, de egentlig bare skulle være eksempler på, og det udlægges i artiklen, hvordan Žižeks eksempler mere fungerer som interventioner end som illustrationer. Artiklen beskriver herefter de strategier, som kendetegner Žižeks valg af eksempler. Og til sidst beskriver den, som en systematisering af Žižeks eksempelarbejde, tre greb i forhold til at arbejde med eksempler som tænkemaskiner. I sidste ende, argumenterer artiklen, må forholdet mellem eksempel og begreb potentielt kunne vendes helt om, så det er eksemplet, som skaber et nyt begreb og ikke omvendt. When we use examples, we primarily mean to clarify or illustrate something. The wager of this article is, however, that examples can also be used to spur thought. The article revolves around the Slovenian philosopher Slavoj Žižek, who often uses examples in this way: Žižek’s examples challenge and recast the concepts they were merely meant to exemplify, and the article shows how Žižek’s examples operate more like interventions than illustrations. The article moves on to describe the strategies that Žižek employ to choose his examples. Finally, as a systematization of Žižek’s use of examples, the article describes three ways of working with examples as tools for thought. The central point is, it is argued, to accept that the hierarchy of example and concept can potentially be turned upside down, so that it is the example, which creates a new concept and not the other way around.
Die Sicherungsverwahrung im Nationalsozialismus und ihre Fortentwicklung bis heute
Authors: Schuster Kristina
Published: March 2019

The analysis of historical injustices in the application of preventive custody during the period of National Socialism allows for the deduction of requirements pertaining to current developments in the field. Through the perspective of legal history, as well as the examination of case studies, I aim to pinpoint the various problems that are immanent to the laws surrounding preventive custody to this day. Case studies from the early years of its application (1935 – 1943) reveal the extent to which the practice interfered with the lives of individuals and successively eroded constitutional standards. By illustrating the consequences of implementing radical preventive measures, I intend to challenge continuing developments in the field of preventive custody and to offer up a number of demands pertaining to the status quo.
Modelagem da circulação atmosférica na região da usina termoelétrica de Candiota
Authors: Alves Rita de Cássia Marques , Dias Maria Assunção Faus da Silva , Moraes Osvaldo Luiz Leal de
Published: March 2019

In this paper it is used the Regional Atmospheric Modeling System (RAMS) in order to simulate the atmospheric circulation around the Candiota Thermoelectric Power Plant. Two numerical experiments are showed. The first one describes the sensitivity of the model to the local topography. In the second one the model is initialized with data from CPTEC/INPE and the results are compared with data obtained in fields campaigns. This comparison indicates that the RAMS outputs are an useful tools to be used in atmospheric dispersion models to describe the pollutant transport emitted by the Candiota source.
Modelo euleriano semi-analítico para a dispersão de contaminantes na Camada Limite Planetária
Authors: Moreira Davidson M. , Moura Angela B. D. , Vilhena Marco T. de , Degrazia Gervásio Annes
Published: March 2019

Um modelo de dispersão analítico baseado na discretização da Camada Limite Planetária em N subcamadas é apresentado. Em cada subcamada a equação de difusão-adevcção é resolvida pelo emprego da transformada de Laplace, considerando um valor médio para o coeficiente de difusão e para a velocidade do vento. O presente modelo emprega perfis realísticos semi-empíricos para o coeficiente de difusão e velocidade do vento, de modo que a turbulência não homogênea pode ser utilizada. A performance do modelo é testada confrontando as simulações com os dados experimentais de Prairie Grass e Copenhagen. A aplicação de índices estatísticos (Hanna, 1989) mostra que o modelo analítico de dispersão proposto produz bons resultados.
Use of Doppler Sodar in atmospheric measurements
Authors: Freitas Edmilson Dias de , Dias Maria Assunção Faus da Silva , Nair K. Narayanan , Dias Pedro Leite da Silva
Published: March 2019

O uso do Sodar Doppler tem trazido avanços significativos ao entendimento dos processos de camada limite atmosférica. Estes instrumentos têm demonstrado suas habilidades em um grande número de estudos, tais como circulações de brisa marítima/terrestre, escoamento em terrenos complexos, ondas de gravidade, jatos de baixos níveis e sistemas frontais, além de possibilitar estimativas quantitativas de parâmetros de turbulência tais como fluxo de calor sensível, balanço de energia cinética turbulenta, função estrutura de temperatura e a determinação da altura da camada de mistura.Neste trabalho, o princípio de funcionamento de diferentes tipos de Sodar, suas habilidades e limitações na instalação desses instrumentos são apresentados. No final, alguns fenômenos detectados por um Sodar Doppler do tipo “phased-array”, recentemente adquirido pelo IAG-USP, são apresentados.
Concrete Modular Pavements – Types, Issues And Challenges
Authors: Vaitkus Audrius , Gražulytė Judita , Kleizienė Rita , Vorobjovas Viktoras , Šernas Ovidijus
Published: March 2019

According to the European Asphalt Pavement Association, more than 90 per cent of the European road network is paved with asphalt. Constantly increasing traffic volume and climate change accelerate deterioration of current pavements. As a result, there arises a need to rehabilitate them prematurely. Repair and rehabilitation work lead to traffic congestion, which is one of the most significant concerns in highly trafficked roads and urban streets. Concrete modular pavements consisting of precast concrete slabs are a reasonable solution to deal with the road works since their construction, as well as repair, is time-saving. Repair works typically are implemented during a low traffic period (usually at night). A primary purpose of concrete modular pavements is heavily trafficked roads and other transport areas. This paper focuses on concrete modular pavements, their types, issues and challenges related to their design, slab fabrication and pavement construction. The conducted analysis revealed 15 different types of concrete modular pavements that differ from the techniques of slab joints and load transfer between the adjacent slabs. More than 20 issues and challenges related to the design of modular elements, slab fabrication and pavement construction were identified. Finally, the existing practice of concrete modular pavements was summarised and the gaps of scientific knowledge, as well as a need for comprehensive research, were defined.
You’re better than you think you are: A comparison of lecturer and student rated evaluations of teaching on a Professional Doctorate training programme
Authors: Patton Bob
Published: March 2019

Student evaluation of teaching content and delivery has been undertaken at the University of Surrey for many years. Typically students complete Module Evaluation Questions (MEQs) at the end of each teaching module. Feedback from the MEQs is provided to teaching staff and this contributes towards individuals’ assessment of their appraisal targets, and to course convenors to help the ongoing development of course materials and staff development. Trainees attending the PsychD Clinical Psychology Doctorate programme complete a “Feedback on Learning” questionnaire (based on the standard university MEQ) on a weekly basis for each lecture they attended. While the evidence base for student assessment of leaning is well founded, the university does not at present seek to understand lecturers own reflection on their delivery of teaching. By determining differences and commonalities between educators and students experiences of teaching, it is hoped that we may identify areas for further staff development and training, and to facilitate regular reflection of teaching performance from staff.
ENVIRONMENTAL CONCERNS OF ENERGY CHAIN AS A REFLECTION OF SUSTAINABILITY
Authors: Vučić Vlastimir , Radović Vučić Mirjana
Published: March 2019

Environmental policy integration (EPI) relates to the inclusion of environmental concerns in sectoral policies outside the conventional environmental policy domain. EPI has became a main concept in global environmental governance with the intention to link the incompatible objectives of economic competitiveness, social development and environmental protection with the concept of Sustainable Development (SD). Having to deal with the environmental concerns over, for example energy, is a necessity. There is an opinion that the environmental concerns of the energy chain are some of the most important drivers to influence European Union (EU) energy policy. Similarly, Renewable Energy Sources (RES) and energy efficiency created the stance for a sustainable energy system. The target for energy from RES (RES-E) in the gross final consumption in the Republic of Serbia is set to increase from 20.1% in 2014 to 27% in 2020. Each deviation from mandatory share of RES in gross final consumption in the Republic of Serbia would mean higher energy gross consumption than anticipated and more capacities for energy generation from RES. Analysis is required from the aspect of energy system possibilities, the impact on mandatory national goals for energy share from RES in total gross final energy consumption and long-term interest of the Republic of Serbia.
Key words: Environmental policy integration, Sustainable Development, Renewable Energy Sources.
FLEXIBLE WORK FORMS AND SAFE LABOR
Authors: Ilić Petković Aleksandra , Simić Jovan , Cvetković Milena
Published: March 2019

Conventional work forms are being steadily replaced with those work forms which correspond to the requirements of science, economy, global market trends, and interests of organizations, i.e. employers and employees. Flexible work stands for elastic and adaptable approach to work and all relevant questions regarding the organization and performance of labor. A special challenge in those forms of labor is securing the highest possible level of occupational safety and health for employees, which means that all unwanted consequences must be mitigated or reduced. This paper is about flexible work forms and safe labor. An insight into these work forms from the perspective of occupational safety and health will provide a much better understanding of these work forms of labor, as well as understanding of the problems of occupational safety of the employees who perform these forms of labor, with certain ideas on the improvement of the whole system of occupational safety and health.
Key words:labor relation, flexibility, occupational safety and health, employees