nils-herrmann/clean_scirepeval huggingface dataset:
El concepto de organizacion, tan cerca y tan lejos
Year: 2019

La disciplina administrativa encuentra en la Teoria Organizacional (TO) su respaldo cientifico. Esto es cierto aun cuando muchos practicantes de la Administracion lo desconozcan o sean inconscientes de ello. Con la TO se remueve la exclusividad de la racionalidad instrumental en el mundo organizacional y en su lugar se incorporan nuevas visiones. Para tal fin, el presente capitulo hace un recorrido simple por multiples visiones de la Organizacion para acopiar elementos que permitan entender la Organizacion como un fenomeno complejo. El capitulo esencialmente sigue la propuesta de Hatch y Cunliffe (2013) y la complementa con aportes de otros autores y esta organizado como sigue: Inicialmente se muestran los problemas y las ventajas de los elementos comunes en la definicion de la Organizacion. Estos se explican, a continuacion, en relacion a su contexto historico. Este ultimo ha establecido un imperativo aplicado sobre la TO tal que audita la pertinencia de la creacion de teoria. Tal es el tema siguiente. Luego, se pasa a la revision de las perspectivas de estudio de la TO para cerrar con la propuesta de las nuevas influencias que recaen en ella.
Design of a 1 MHz High Efficiency High Power Density Bidirectional GaN Based CLLC Converter for Electric Vehicles
Venue: IEEE Transactions on Vehicular Technology
Year: 2019

In this paper, a bidirectional CLLC converter operating at MHz level switching frequency is proposed to achieve high power density and high efficiency. An optimized stacked printed circuit board winding based planar transformer with adjustable leakage inductance is modeled and designed for the proposed converter. It is enabled using gallium nitride devices to achieve fast switching with low switching losses. A detailed power loss model is established for the efficient thermal design of the converter. A proof of concept hardware of 3.3 kW, 400 450 VDC input, 250 420 VDC output CLLC converter with 1 MHz operating frequency is built and tested over a wide range of loading conditions. The power density of the system is 9.22 W/cm3 (151.1 W/in3) and the peak efficiency achieves over 97%
Assessing Distribution of Migratory Fishes and Connectivity following Complete and Partial Dam Removals in a North Carolina River
Year: 2014

AbstractFish, especially migratory species, are assumed to benefit from dam removals that restore connectivity and access to upstream habitat, but few studies have evaluated this assumption. Therefore, we assessed the movement of migratory fishes in the springs of 2008 through 2010 and surveyed available habitat in the Little River, North Carolina, a tributary to the Neuse River, after three complete dam removals and one partial (notched) dam removal. We tagged migratory fishes with PIT tags at a resistance board weir located at a dam removal site (river kilometer [rkm] 3.7) and followed their movements with an array of PIT antennas. The river wide distribution of fish following removals varied by species. For example, 24 31% of anadromous American Shad Alosa sapidissima, 45 49% of resident Gizzard Shad Dorosoma cepedianum, and 4 11% of nonnative Flathead Catfish Pylodictis olivaris passed the dam removal site at rkm 56 in 2009 and 2010. No preremoval data were available for comparison, but reach connecti.
Crystal structure of a novel polymorph of trans dichlorobis (triphenylphosphine) palladium (II) and its application as a novel, efficient and retrievable catalyst for the amination of aryl halides and stille cross coupling reactions
Year: 2017

In this study, synthesis, characterization and X ray crystal structural characterization of trans [PdCl 2 (PPh 3 2 complex are described. This compound has been fully characterized by elemental analysis (CHN) FT IR, 1 H, 13 C and 31 P NMR and also X ray crystallographic. In this structure, the geometry around palladium atom is a slightly distorted square planar. It was found that this compound can act as an efficient catalyst for amination of aryl halides to afford primary amines and has also been successfully employed in the catalytic stille cross coupling reaction with satisfactory results. The catalyst showed recyclability and it can be reused without essentially losing its catalytic activity frequently.
Energy efficiency optimisation in supply chain networks: impact of inventory management
Year: 2020

This work describes the development of a model to address sustainability in supply chain networks in comparing environmental impact to cost optimisation. It takes into account the effect of inventory management policies on energy consumption in transportation and storage. This work first focusses on a base case with one product type, involving one transportation link (from the supplier to the distributor) and one storage node. In addition, an extended case is considered, including additionally the transportation from the distributor to the customers. Based on real data, our results show that the most energy efficient solution is not necessarily detrimental to the economic profits. Also, a higher performance does not always mean a higher energy use: increasing the service level can indeed decrease the energy use. Finally, our analysis shows that the model can be extended to an entire supply chain network.
UJI AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL, FRAKSI n HEKSANA, ETIL ASETAT DAN AIR DARI EKSTRAK ETANOL DAUN KUCAI (Allium schoenoprasum L. TERHADAP BAKTERI Streptococcus mutans ATCC 25175 SECARA in vitro
Year: 2019

Chives leaves contain chemical compounds such as saponins, triterpenoids, tannins, flavonoids, and allicin. This research aimed to find out antibacterial activity of n hexane, ethyl acetate, and water fractions of chives ethanol extract, to find out the most active extract or fraction and to find out Minimum Inhibiting Concentration and Minimum Killing Concentration of most active extract or fraction on Streptococcus mutans ATCC 25175. Chives leaf powder was extracted by maceration method with 70% ethanol. The extract obtained was fractionated with n hexane, ethyl acetate, and water solvents. The fractionation results were tested for antibacterial activity against Streptococcus mutans ATCC 25175 using a diffusion method with a concentration of 50, 25, 12.5% to find out the most active fraction. The most active fraction was continued using the dilution method to determine the Minimum Inhibitory Concentration and Minimum Killer Concentration with concentrations of 50, 25, 12.5, 6.25, 3.125, 1.562, 0.781, 0.391, 0.195, and 0.098% The results showed that the n hexane, ethyl acetate, and water fractions of the ethanol extract of chives leaves had antibacterial activity against Streptococcus mutans ATCC 25175. The 50% concentration of ethyl acetate fraction had an average inhibition diameter of 16,67 mm. The most active fraction of Streptococcus mutans ATCC 25175 was the ethyl acetate fraction with an unknown Minimum Inhibitory Concentration and a Minimum Killer Concentration of 12.5%  Chives (Allium schoenoprasum L. antibacterial, fraction, Streptococcus mutans ATCC 25175
Effect of client feedback on couple psychotherapy outcomes.
Venue: Psychotherapy
Year: 2010

Using outcome data to monitor the progress of treatment and the therapeutic alliance, also known as "client feedback" or "patient focused research," has yielded impressive results in individual psychotherapy. Client feedback has demonstrated reductions in premature terminations and improved psychotherapy outcomes. However, little research has been conducted using this paradigm with couples receiving therapy. The purpose of this study was to investigate whether the effectiveness of client feedback would extend to couple therapy. Results from a randomized couple clinical trial conducted in a naturalistic setting indicated that couples in a client feedback condition demonstrated statistically significantly more improvement compared with couples receiving treatment as usual and that improvement occurred more rapidly. Also, 4 times as many couples in the feedback condition reported clinically significant change by the end of treatment.
Direct Design of Near Perfect Reconstruction Linear Phase Nonuniform Filter Banks with Rational Sampling Factors
Venue: 2006 IEEE International Conference on Acoustics Speech and Signal Processing Proceedings
Year: 2006

A direct method of designing linear phase (LP) near perfect reconstruction (NPR) nonuniform filter banks (NUFBs) with rational sampling factors is presented. Conditions on the possible sampling factors of NUFBs are given. The band position relations and phase relations of the significant aliasing components are also analyzed. Based on these two relations, we derive a necessary condition on the elimination of significant aliasing distortion (ALD) Meanwhile LP property is met. Moreover, a set of relations of the filters are presented to minimize the ALD further. In our proposed method, the LP NUFBs with high stopband attenuation and low system delay can be easily designed without nonlinear optimization procedure
Preterm Birth: Causes, Consequences, and Prevention
Year: 2007

The increasing prevalence of preterm birth in the United States is a complex public health problem that requires multifaceted solutions. Preterm birth is a cluster of problems with a set of overlapping factors of influence. Its causes may include individual level behavioral and psychosocial factors, sociodemographic and neighborhood characteristics, environmental exposure, medical conditions, infertility treatments, and biological factors. Many of these factors co occur, particularly in those who are socioeconomically disadvantaged or who are members of racial and ethnic minority groups. While advances in perinatal and neonatal care have improved survival for preterm infants, those infants who do survive have a greater risk than infants born at term for developmental disabilities, health problems, and poor growth. The birth of a preterm infant can also bring considerable emotional and economic costs to families and have implications for public sector services, such as health insurance, educational, and other social support systems. Preterm Birth assesses the problem with respect to both its causes and outcomes. This book addresses the need for research involving clinical, basic, behavioral, and social science disciplines. By defining and addressing the health and economic consequences of premature birth, this book will be of particular interest to health care professionals, public health officials, policy makers, professional associations and clinical, basic, behavioral, and social science researchers.
Generalized linear mixed models: a practical guide for ecology and evolution.
Venue: Trends in ecology evolution
Year: 2009

How should ecologists and evolutionary biologists analyze nonnormal data that involve random effects? Nonnormal data such as counts or proportions often defy classical statistical procedures. Generalized linear mixed models (GLMMs) provide a more flexible approach for analyzing nonnormal data when random effects are present. The explosion of research on GLMMs in the last decade has generated considerable uncertainty for practitioners in ecology and evolution. Despite the availability of accurate techniques for estimating GLMM parameters in simple cases, complex GLMMs are challenging to fit and statistical inference such as hypothesis testing remains difficult. We review the use (and misuse) of GLMMs in ecology and evolution, discuss estimation and inference and summarize 'best practice' data analysis procedures for scientists facing this challenge.
Symmetric carrier assisted differential detection receiver with low complexity signal signal beating interference mitigation.
Venue: Optics express
Year: 2020

Low cost, spectrally efficient self coherent detection capable of optical field recovery is desired for inter data center connections and metro networks. In this work, a simplified symmetric carrier assisted differential detection (S CADD) receiver structure is proposed, which removes the single ended photodiode branch and saves one ADC in standard asymmetric CADD (A CADD) receivers. To compensate for the signal signal beating (SSBI) impairment, a low complexity iterative SSBI mitigation algorithm is put forward as well. The computational complexity is reduced by moving equalization, de modulation and modulation out of each iteration. Based on single carrier twin single sideband (SSB) pulse and quadrature amplitude modulation (PAM and QAM) signals, the OSNR sensitivity with different carrier to signal power ratios (CSPRs) at back to back (BTB) scenario, the bit error rates (BER) performance after 1000km fiber transmission, and the received optical power sensitivity at BTB are theoretically and numerically compared for both S CADD and A CADD receivers, respectively.
Accelerated Volume Rendering with Chebyshev Distance Maps
Venue: SIGGRAPH Asia Technical Briefs
Year: 2019

Volume rendering has useful applications with emerging technologies such as virtual and augmented reality. The high frame rate targets of these technologies poses a problem for volume rendering because of its very high computational complexity compared with conventional surface rendering. We developed an efficient empty space skipping algorithm for accelerating volume rendering. A distance map is generated which indicates the Chebyshev distance to the nearest occupied region (with non transparent voxels) within a volume. The distance map is used to efficiently skip empty regions while volume ray casting. We show improved performance over state of the art empty space skipping techniques.
From multidrug resistant to extensively drug resistant tuberculosis in Lisbon, Portugal: the stepwise mode of resistance acquisition.
Venue: The Journal of antimicrobial chemotherapy
Year: 2013

The development and transmission of extensively drug resistant (XDR) tuberculosis (TB) constitutes a serious threat to the effective control of TB in several countries. Here, in an attempt to further elucidate the dynamics of the acquisition of resistance to second line drugs and investigate an eventual role for eis promoter mutations in aminoglycoside resistance, we have studied a set of multidrug resistant (MDR)/XDR TB isolates circulating in Lisbon, Portugal.  Forty four MDR TB or XDR TB isolates were genotyped and screened for mutations in genes associated with second line drug resistance, namely tlyA, gyrA, rrs and eis.  The most prevalent mutations found in each gene were Ins755GT in tlyA, A1401G in rrs, G 10A in eis and S91P in gyrA. Additionally, two genetic clusters were found in this study: Lisboa3 and Q1. The characteristic mutational profile found among recent XDR TB circulating in Lisbon was also found in MDR TB strains isolated in the 1990s. Also investigated was the resistance level conferred by eis G 10A mutations, revealing that eis G 10A mutations may result in amikacin resistance undetectable by widely used phenotypic assays.  The analysis of the distribution of the mutations found by genetic clustering showed that in the Q1 cluster, two mutations, gyrA D94A and rrs A1401G, were enough to ensure development of XDR TB from an MDR strain. Moreover, in the Lisboa3 cluster it was possible to elaborate a model in which the development of low level kanamycin resistance was at the origin of the emergence of XDR TB strains that can be discriminated by tlyA mutations.
Transcriptome Analysis of the Liver and Muscle Tissues of Black Carp (Mylopharyngodon piceus) of Different Growth Rates.
Venue: Marine biotechnology
Year: 2020

In this study, we used RNA seq to analyze the muscle and liver tissues of black carps (Mylopharyngodon piceus) of different growth rates from the same batch to evaluate their growth traits. We have two groups; they are the black carp group with fast growth rate and the slow growth rate. A total of 23,132 genes were enriched in the Gene Ontology analysis, and 285 related pathways were found in the Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis. The KEGG pathway analysis showed significant differences in the expression of some genes involved in growth and development related metabolic pathways such as the FoxO signaling pathway, p53 signaling pathway, PI3K Akt signaling pathway, apoptosis, TGF b signaling pathway, and insulin signaling pathway. The numbers of differentially expressed genes in muscle and liver are 1913 and 1775. Nine of the differently expressed genes involved in the different growth traits and accuracy of the transcriptome data were validated using quantitative real time PCR. We found that the expression levels of some growth related genes were significantly higher in the fast growth rate black carps than in the slow growth rate black carps. The large number of transcriptome sequences obtained in this study has enriched the black carp gene resources, and the obtained differentially expressed genes and related pathway analysis provide valuable information for understanding the growth traits of the black carp.
Impact of COVID 19 Pandemic on Colorectal Cancer Screening Program
Venue: Clinical Colorectal Cancer
Year: 2020

One of the main cluster of coronavirus disease 2019 (COVID 19) has been identified in Italy. Following European and local guidelines, Italian Endoscopy Units modulated their activity. We aimed at analyzing need and safety to continue selective CRCS colonoscopies during COVID 19 pandemic.  We carried out a retrospective controlled cohort study in our "COVID free" hospital to compare data of CRCS colonoscopies of the lockdown period (9th March 4th May 2020) with those of the same period of 2019 (control group) A pre/post endoscopic sanitary surveillance for COVID 19 infection was organized for patients and sanitary staff.  In the lockdown group, 60 out of 137 invited patients underwent endoscopy, whereas in the control group 238 CRCS colonoscopies (3.9 fold) were performed. In the lower number of examinations during the lockdown we found more colorectal cancers (5cases, 8% vs 3cases,1% p=0.002) The "high risk" adenomas detection rate was also significantly higher in the "lockdown group" than in controls (47%vs25%,p=0.001) A multiple regression analysis selected relevant symptoms (HR3.1) familiarity (HR1.99) and lockdown period (HR2.2) as independent predictors of high risk lesions (high risk adenomas and CRC) No COVID 19 infections were reported among staff and patients.  The overall adherence to CRCS decreased during the pandemic, but the continuation of CRCS colonoscopies was anyway efficacious and safe.
Participatory simulation modelling to inform public health policy and practice: Rethinking the evidence hierarchies
Venue: Journal of public health policy
Year: 2017

Drawing on the long tradition of evidence based medicine that aims to improve the efficiency and effectiveness of clinical practice, the field of public health has sought to apply 'hierarchies of evidence' to appraise and synthesise public health research. Various critiques of this approach led to the development of synthesis methods that include broader evidence typologies and more 'fit for purpose' privileging of methodological designs. While such adaptations offer great utility for evidence informed public health policy and practice, this paper offers an alternative perspective on the synthesis of evidence that necessitates a yet more egalitarian approach. Dynamic simulation modelling is increasingly recognised as a valuable evidence synthesis tool to inform public health policy and programme planning for complex problems. The development of simulation models draws on and privileges a wide range of evidence typologies, thus challenging the traditional use of 'hierarchies of evidence' to support decisions on complex dynamic problems.
Analyst Forecast Bundling
Venue: Manag. Sci.
Year: 2020

Changing economic conditions over the past two decades have created incentives for sell side analysts to both provide their institutional clients tiered services and to streamline their written research process. One manifestation of these changes is an increased likelihood of analysts' issuing earnings forecasts for multiple firms on the same day. We identify this bundling property and show that bundling has increased steadily over time. We provide field evidence that the practice is a cost saving measure, a natural by product of analysts focusing on thematic research, and a reflection of forecast updating that occurs in advance of important events. Our empirical analyses show that bundled forecasts are less accurate, less bold, and less informative to investors than nonbundled forecasts. We also find that analysts who produce bundled forecasts provide valuable specialized services to their institutional clients. Our findings ultimately demonstrate that forecast bundling has important implications for the properties of analysts' forecasts.This paper was accepted by Shiva Rajgopal, accounting.
A Low Profile, UWB Circular Patch Antenna with Monopole Like Radiation Characteristics
Venue: 2020 International Workshop on Antenna Technology (iWAT)
Year: 2020

a simple ultra wideband antenna with monopolelike radiation pattern is presented in this paper. The structure of this low profile antenna with height of the 7 mm (0.65 ;min) is based on annular ring circular patch. To improve the antenna's bandwidth, the main annular ring circular patch is loaded with two concentric rings and two rectangular slots. The result shows the antenna achieves a 10 dB return loss bandwidth from 2.85 GHz to 8.6 GHz. The monopole like radiation pattern is maintained throughout the frequency bands by combining four propagation modes of TM01, TM02, and TM03.
Effect of Tax Rates, Penalty Rate, Detection Probability, Cost of Compliance, Royalty Rates, Environmental Regulations, and Petroleum Profit Tax Compliance the Moderating Role of Trust in Government: A Conceptual Framework
Venue: Vol. 9, Number 2, 2019
Year: 2019

The paper presents a theoretical framework on the moderating effect of trust in authority on the relationship between tax rates, penalty, detection probability, cost of compliance, royalty rates, environmental regulations, and petroleum profit tax compliance. The objective of the proposed framework is to expand the Allingham and Sandmo (1972) model of tax compliance by adding two more predictor variables relevant to the oil and gas industry (royalty rates and environmental regulations) and moderating variable (trust) to better explain the relationship. Allingham and Sandmo (1972) model received a lot of criticisms for not considering other non human factors that can help in determining taxpayers' compliance behavior, hence the expansion of the model to include new variables, purely non human factors which are relevant to the industry in question. A thorough search of the following databases: Scopus database, Web of Science, Emerald, Google Scholar, among others was conducted to come up with the relevant and related literature on the subject matter. Providing empirical evidence through validation of this framework would have important implications for policymakers in host oil and gas producing countries, oil and gas operators, the deterrence theory as well as future research.