检索结果-南通市图书馆

Nestling sex ratio is unaffected by individual and population traits in the griffon vulture

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2023年第3期69卷 227-235页

作者： Guillermo Gomez-lopez Felix Martinez Ana Sanz-Aguilar Martina Carrete Guillermo Blanco Department of Evolutionary Ecology National Museum of Natural Sciences(MNCN)Spanish National Research Council(CSiC)Jose Gutierrez Abascal 228006 MadridSpain Escuela Internacional de Doctorado Universidad Rey Juan Carlos(URJC)Tulipan s/n28933 MostolesMadridSpain Animal Demography and Ecology Group Institut Mediterrani d'Estudis Avangats(IMEDEA)Miquel Marques 217020 EsporlesMallorcaSpain Applied Zoology and Conservation Group Universitat de les Illes Balears(UIB)Ctra.De Valldemossa km.7.507122PalmaSpain Department of Physical Chemical and Natural SystemsUniversidad Pablo de Olavide(UPO)Ctra.de Utrera km.141013 SevillaSpain

Variation in offspring sex ratios is a central topic in animal demography and population *** studies have focused on bird species with marked sexual dimorphism and multiple-nestling broods,where the offspring sex ratio is often biased due to different individual or environmental ***,biases in offspring sex ratios have been far less investigated in monomorphic and single-egg laying species,and few studies have evaluated long-term and large-scale variations in the sex ratio of nestling ***,we explore individual and environmental factors potentially affecting the secondary sex ratio of the monomorphic griffon vulture Gyps *** used information collected at three breeding nuclei from central Spain over a 30-year period(1990–2020)to analyse the effects of nestling age,parental age,breeding phenology,conspecific density,population reproductive parameters,and spatial and temporal variability on nestling *** ratio did not differ from parity either at the population or the nuclei *** significant between-year differences were detected,even under highly changing conditions of food availability associated with the mad-cow *** found that tree nesting breeders tend to have more sons than daughters,but as this nesting behavior is rare and we consequently have a small sample size,this issue would require additional *** further research is needed to assess the potential effect of breeder identity on nestling sex ratio,this study contributes to understanding the basic ecology and population dynamics of Griffon Vultures,a long-lived species with deferred maturity and low fecundity,whose minor deviations in the offspring sex ratio might imply major changes at the population level.

关键词： offspring sex ratio nestling sex Gyps fulvus monomorphism mad-cow crisis demography

Technical reports and theoretical studies about the structural behaviour of masonry domes in the 18th century

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Architectural Research 2023年第1期12卷 42-66页

作者： Gema M.lopez-Manzanares Department of Architecture Universidad de AlcalaAlcala´de HenaresSpain

The development of the scientific theory on the stability of vaulted structures was driven mainly during the 18th century based on applying the laws of Mechanics and the knowledge of the properties of *** the specific case of structures such as domes,the development of the theory is closely related to the theory of arches and ***,the main contributions are made in technical reports on the construction,stability,and repair of domes,such as the dome of Saint Peter’s in Rome and Sainte-Genevie`ve or Pantheon in *** article,therefore,analyses the relationship between theory and practice and the development achieved in the specific subject of masonry domes during the 18th century from the point of view of the Limit Analysis of Masonry *** a more general sense,the objective of this research is to study in greater depth the theory of Limit Analysis itself,that is,to learn from the work carried out in the 18th century by mathematicians,architects,and engineers,who,although unaware of the existence of the theoretical framework of Limit Analysis as such,moved within it.

关键词： Structural analysis Masonry structures Limit analysis Technical reports Pathology Reinforcement Iron rings Domes

重症监护室护士限制治疗努力的能力:整合性综述

在线全文

学校读者我要写书评

暂无评论

International Journal of Nursing Sciences 2024年第1期11卷 143-154,I0003页

作者： Elvia R.lopez-Panza Vanessa C.Pacheco-Roys Kelly J.Fernandez-Ahumada Diana C.Díaz-Mass María Y.Exposito-Concepcion Elizabeth Villarreal-Cantillo Cesar I.Aviles Gonzalez Nursing Department Universidad del NorteBarranquillaColombia Nursing Program Faculty of Health SciencesUniversidad Popular del CesarValleduparColombia Clínica Valledupar ValleduparColombia Hospital Universidad del Norte SoledadColombia Department of Medical Sciences and Public Health University of CagliariCittadella Universitaria di MonserratoCagliariItaly

目的在重症监护病房(IntensiveCareUnit,ICU),护土难免会遇到需要限制治疗努力(limiting therapeutie efort,LTE)的患者,尽管多数护士还缺乏为这些临终患者及其家庭提供支持的准备。本综述旨在描述ICU护士在LTE中需要具备的能力。方法对... 详细信息

目的在重症监护病房(IntensiveCareUnit,ICU),护土难免会遇到需要限制治疗努力(limiting therapeutie efort,LTE)的患者,尽管多数护士还缺乏为这些临终患者及其家庭提供支持的准备。本综述旨在描述ICU护士在LTE中需要具备的能力。方法对2010年--2023年发表的文献进行综述。系统检索了5个数据库:Medline、Wiley Online Library、SciELO、ScienceDirect和Web of Science。使用关键评估项目工具西班牙语版(Critical Appraisal Skills Programme in Spanish,CASPe)作为评判性阅读工具。使用牛津循证医学中心(Center for Evidence-Based Medicine.,CEBM)评估工具确定证据级别和推荐强度。结果共纳入25篇文献。ICU护士LTE护理的能力包括对患者的直接护理、以家庭为中心的护理以及护士在团队中的作用。该综述确定了3个类别的能力:作为患者、家庭与跨学科团队之间维护者的能力,在LTE方面的决策能力,在患者生命末期治疗和护理干预的能力。结论ICU护士在LTE方面需要具备相应的能力,这对患者的生活质量死亡尊严以及患者家庭应对悲伤的全面支持至关重要。

关键词：重症监护家庭支持重症监护病房护士的作用安宁疗护专业能力

Bulk lateral shearing interferometry for spatiotemporal study of time-varying ultrashort optical vortices

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonics Research 2022年第4期10卷 922-931页

作者： Miguel lopez-Ripa Inigo J.Sola Benjamin Alonso Grupo de Aplicaciones del Laser y Fotonica(ALF) Departamento de Fisica AplicadaUniversidad de Salamanca37008 SalamancaSpain

The spatiotemporal measurement of ultrashort laser beams usually involves techniques with complex set-ups or limited by instabilities that are unable to accurately retrieve the frequency-resolved wavefront. Here, we solve these drawbacks by implementing a simple, compact, and ultra-stable spatiotemporal characterization technique based on bulk lateral shearing spectral interferometry using a birefringent uniaxial crystal. We apply it to retrieve complex spatiotemporal structures by characterizing ultrafast optical vortices with constant and time-varying orbital angular momentum. This technique can operate in all the transparency range of the anisotropic elements,enabling the characterization in different spectral ranges like infrared, visible, or ultraviolet.

关键词： ultrashort shearing interferometry

Abiraterone plus prednisone improves survival in metastatic castration-resistant prostate cancer

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2011年第6期13卷 785-786页

作者： Scott T Tagawa Himisha beltran Departments of Medicine and Urology Weill Comell Medical College Weill Cornell Cancer Center New York NY 10065 USA

In essentially just 1 year＇s time, we have seen science translated into exciting new therapeutic agents for men with metastatic castration-resistant prostate cancer （CRPC）, most recently with the United States Foo... 详细信息

关键词： translated therapeutic agents

A Data Mining Approach to Detecting Bias and Favoritism in Public Procurement

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Intelligent Automation & Soft Computing 2023年第6期36卷 3501-3516页

作者： Yeferson Torres-Berru Vivian F.lopez-Batista Lorena Conde Zhingre University of Salamanca Salamanca37008Spain Instituto Tecnológico Superior Sudamericano Loja1101608Ecuador Universidad Internacional del Ecuador Loja1101608Ecuador

In a public procurement process,corruption can occur at each stage,favoring a participant with a previous agreement,which can result in over-pricing and purchases of substandard products,as well as gender *** paper’s aim is to detect biased purchases using a Spanish Language corpus,ana-lyzing text from the questions and answers registry platform by applicants in a public procurement process in ***,gender bias is detected,pro-moting both men and women to participate under the same *** order to detect gender bias and favoritism towards certain providers by contracting enti-ties,the study proposes a unique hybrid model that combines Artificial Intelli-gence algorithms and Natural Language Processing(NLP).In the experimental work,303,076 public procurement processes have been analyzed over 10 years(since 2010)with 1,009,739 questions and answers to suppliers and public insti-tutions in each *** bias and favoritism were analyzed using a Word2-vec model with word embedding,as well as sentiment analysis of the questions and answers using the VADER *** 32%of cases(96,984 answers),there was favoritism or gender bias as evidenced by responses from contracting *** proposed model provides accuracy rates of 88% for detecting favor-itism,and 90%for detecting gender *** one-third of the procure-ment processes carried out by the state have indications of corruption and *** Latin America,government corruption is one of the most significant challenges,making the resulting classifier useful for detecting bias and favoritism in public procurement processes.

关键词： Favoritism bias natural language processing Word2vec sentiment analysis word embeddings

Generalized Multiscale RBF Networks and the DCT for Breast Cancer Detection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Automation and computing 2020年第1期17卷 55-70页

作者： Carlos beltran-Perez Hua-Liang Wei Adrian Rubio-Solis Department of Automatic Control and Systems Engineering University of SheffieldSheffield S13JDUK Tecnologico de Monterrey Campus TolucaEduardo Monroy Cardenas 2000San Antonio BuenavistaToluca 50110Mexico

The use of the multiscale generalized radial basis function(MSRBF)neural networks for image feature extraction and medical image analysis and classification is proposed for the first time in this *** MSRBF networks hold a simple and flexible architecture that has been successfully used in forecasting and model structure detection of input-output nonlinear *** this work instead,MSRBF networks are part of an integrated computer-aided diagnosis(CAD)framework for breast cancer detection,which holds three stages:an input-output model is obtained from the image,followed by a high-level image feature extraction from the model and a classification module aimed at predicting breast *** the first stage,the image data is rendered into a multiple-input-single-output(MISO)*** order to improve the characterisation,the nonlinear autoregressive with exogenous inputs(NARX)model is introduced to rearrange the available input-output data in a nonlinear *** forward regression orthogonal least squares(FROLS)algorithm is then used to take advantage of the previous arrangement by solving the system as a model structure detection problem and finding the output layer weights of the NARX-MSRBF *** the second stage,once the network model is available,the feature extraction takes place by stimulating the input to produce output signals to be compressed by the discrete cosine transform(DCT).In the third stage,we leverage the extracted features by using a clustering algorithm for classification to integrate a CAD system for breast cancer *** test the method performance,three different and well-known public image repositories were used:the mini-MIAS and the MMSD for mammography,and the BreaKHis for histopathology images.A comparison exercise was also made between different database partitions to understand the mammogram breast density effect in the performance since there are few remarks in the literature on this *** results show that

关键词： Nonlinear system identification image processing discrete cosine transform radial basis functions computer-aided diagnosis neural networks

Solution to the quadratic assignment problem usingsemi-Lagrangian relaxation

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2016年第5期27卷 1063-1072页

作者： huizhen zhang cesar beltran-royo bo wang liang ma ziying zhang school of management university of shanghai for science and technologyShanghai 200093China department of statistics and operations research rey juan carlos universityMostoles(Madrid)28933Spain school of materials engineering shanghai university of engineering scienceShanghai 201620China

The semi-Lagrangian relaxation （SLR）, a new exactmethod for combinatorial optimization problems with equality constraints,is applied to the quadratic assignment problem （QAP）.A dual ascent algorithm with finite convergence is developed forsolving the semi-Lagrangian dual problem associated to the *** perform computational experiments on 30 moderately difficultQAP instances by using the mixed integer programming solvers,Cplex, and SLR＋Cplex, respectively. The numerical results notonly further illustrate that the SLR and the developed dual ascentalgorithm can be used to solve the QAP reasonably, but also disclosean interesting fact： comparing with solving the unreducedproblem, the reduced oracle problem cannot be always effectivelysolved by using Cplex in terms of the CPU time.

关键词： quadratic assignment problem (QAP) semi-Lagrangian relaxation (SLR) Lagrangian relaxation dual ascentalgorithm.

Ventilator-associated events: From surveillance to optimizing management

在线全文

学校读者我要写书评

暂无评论

Journal of Intensive Medicine 2023年第3期3卷 204-211页

作者： Sergio Ramirez-Estrada Yolanda Peña-lopez Tarsila Vieceli Jordi Rello Intensive Care Department Hospital Sanitas CIMABarcelona 08034Spain Paediatric Critical Care Department Hospital Universitari Vall d’HebronBarcelona 08035Spain Clinical Research/Epidemiology in Pneumonia and Sepsis(CRIPS) Vall d’Hebron Research InstituteBarcelona 08035Spain Infectious Diseases Department Hospital de Clínicas de Porto AlegrePorto Alegre RS 90035-007Brazil Universitat Internacional de Catalunya Barcelona 08195Spain

Mechanical ventilation(MV)is a life-support therapy that may predispose to morbid and lethal complications,with ventilator-associated pneumonia(VAP)being the most *** 2013,the Center for Disease Control(CDC)defined criteria for ventilator-associated events(VAE).Ten years later,a growing number of studies assessing or validating its clinical applicability and the potential benefits of its inclusion have been *** with VAE criteria is retrospective and the focus is often on a subset of patients with higher thanlower *** date,it is estimated that around 30%of ventilated patients in the intensive care unit(ICU)develop *** surveillance enhances the detection of infectious and non-infectious MV-related complicationsthat are severe enough to impact the patient’s outcomes,there are still many gaps in its classification and *** this review,we provide an update by discussing VAE etiologies,epidemiology,and *** strategies on optimizing ventilation,sedative and neuromuscular blockade therapy,and restrictivefluid management are *** ideal VAE bundle is likely to minimize the period of *** believethat it is time to progress from just surveillance to clinical ***,with this review,we have aimed toprovide a roadmap for future research on the subject.

关键词： Intensive care Mechanical ventilation Infection control Ventilator-associated pneumonia