Transportmetrica最新文献

Correlation of levels of lactic acid and glucose in cerebrospinal fluid of cerebral hemorrhage patients with the occurrence of postoperative intracranial infection and clinical prognosis. 脑出血患者脑脊液中乳酸和葡萄糖水平与术后颅内感染发生及临床预后的相关性。

IF 2.5

Transportmetrica Pub Date : 2024-01-25 DOI: 10.5937/jomb0-44058

Lei Zhang, Yan Zhang, Xiaotian Wang, Yun Zhao

{"title":"Correlation of levels of lactic acid and glucose in cerebrospinal fluid of cerebral hemorrhage patients with the occurrence of postoperative intracranial infection and clinical prognosis.","authors":"Lei Zhang, Yan Zhang, Xiaotian Wang, Yun Zhao","doi":"10.5937/jomb0-44058","DOIUrl":"10.5937/jomb0-44058","url":null,"abstract":"Background: Cerebral haemorrhage is a critical condition that often requires surgical treatment, and postoperative intracranial infection can significantly impact patient outcomes. The aim of the study was to examine the relationship between the levels of lactic acid and glucose in cerebrospinal fluid (CSF) of patients with cerebral haemorrhage and their postoperative intracranial infection and clinical prognosis.Methods: The study selected the clinical data of 324 patients with cerebral haemorrhage who underwent surgical treatment in our hospital from March 2020 to March 2022 for retrospective analysis and divided these patients into the intracranial infection group (Group A, n=22, leukocyte values in CSF>5×106/L) and the non-intracranial infection group (Group B, n=302, leukocyte values in CSF 5×106/L) according to the occurrence of postoperative intracranial infection in patients to detect the levels of lactic acid and glucose in CSF at different times in the two groups. Pearson method was adopted to analyze the correlation of the levels of lactic acid and glucose in CSF of patients with intracranial infection, and the Glasgow Outcome Scale (GOS) was used to assess the clinical prognosis of patients. According to their scores, these patients were divided into the good prognosis group (GPG, scores of 4-5 points, n=178) and the poor prognosis group (PPG, scores of 1-3 points, n=146). The levels of lactic acid and glucose in the CSF of patients in the two groups were measured, and the Pearson method was adopted to analyze the relationship between these levels and clinical prognosis.","PeriodicalId":49416,"journal":{"name":"Transportmetrica","volume":"1 1","pages":"36-42"},"PeriodicalIF":2.5,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10943468/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82565044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the spatiotemporal correlation among traffic crashes on arterials with signal coordination 基于信号协调的交通事故时空相关性研究

Transportmetrica Pub Date : 2020-12-17 DOI: 10.1080/23249935.2020.1860154

Yingfei Fan, Runhua Guo, Xinguo Jiang, Mengqing Xu, Guopeng Zhang, Xiang Li, Shiwei Xu, Qi Liang

引用次数: 2

The stochastic multi-modal hub location problem with direct link strategy and multiple capacity levels for cargo delivery systems 具有直连策略和多容量水平的货物运输系统随机多式联运枢纽定位问题

Transportmetrica Pub Date : 2020-07-28 DOI: 10.1080/23249935.2020.1776787

Xiaoting Shang, Kai Yang, B. Jia, Ziyou Gao

引用次数: 16

Service quality effects on air passenger intentions: a service chain perspective 服务质量对航空旅客意愿的影响:服务链视角

Transportmetrica Pub Date : 2012-11-01 DOI: 10.1080/18128602.2010.548837

Yu-Chiun Chiou, Yen-Heng Chen

{"title":"Service quality effects on air passenger intentions: a service chain perspective","authors":"Yu-Chiun Chiou, Yen-Heng Chen","doi":"10.1080/18128602.2010.548837","DOIUrl":"https://doi.org/10.1080/18128602.2010.548837","url":null,"abstract":"This study divides entire airline services into eight service stages and uses a second-order confirmatory factor analysis (CFA) to constitute service quality and to examine the causal relationships between two consecutive service stages from a service chain perspective. Two conceptual frameworks – overall framework and service chain framework are proposed. The former incorporates the constructs of service quality, sacrifice, servicescape, service value, satisfaction, switching barriers, and behavioural intentions combined with seven hypothetical causal relationships. The latter depicts seven hypothetical causal relationships between two consecutive service stages. The proposed models are validated by a case study of Spring Airlines, a low-cost carrier (LCC) based in China. The empirical results support all hypotheses except hypothesis 7 that service quality positively impacts behavioural intentions. Notably, test results for the interrelationships between two consecutive service stages suggest that a lack of satisfaction at a specific service stage will affect customer perception of the consequent service stage. Therefore, to improve the service quality for a service stage, the service quality of all upstream service stages must be improved first. This study also found that service quality has a large effect although not direct on behavioural intentions while sacrifice has the smallest effect. A low-fare strategy may not be effective when an airline fails to deliver high-quality service.","PeriodicalId":49416,"journal":{"name":"Transportmetrica","volume":"8 1","pages":"406 - 426"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/18128602.2010.548837","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59925806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 50

The impact of traffic images on travel time valuation in stated-preference choice experiments 状态偏好选择实验中交通图像对出行时间评价的影响

Transportmetrica Pub Date : 2012-11-01 DOI: 10.1080/18128602.2010.551524

L. Rizzi, Juan Pablo Limonado, S. Steimetz

引用次数: 27

Three new models for the flow–density relationship: derivation and testing for freeway and urban data 三种新的流量-密度关系模型:高速公路和城市数据的推导和检验

Transportmetrica Pub Date : 2012-11-01 DOI: 10.1080/18128602.2011.556680

J. M. del Castillo

引用次数: 58

An ant colony system-based hybrid algorithm for an emergency roadway repair time-space network flow problem 基于蚁群系统的道路应急修复时空网络流问题混合算法

Transportmetrica Pub Date : 2012-09-01 DOI: 10.1080/18128602.2010.515550

S. Yan, Y. Shih

引用次数: 48

Testing the capacity within an extended theory of planned behaviour to reduce the commission of driving violations 在扩展的计划行为理论中测试减少违章驾驶的能力

Transportmetrica Pub Date : 2012-09-01 DOI: 10.1080/18128602.2010.502548

M. Elliott

{"title":"Testing the capacity within an extended theory of planned behaviour to reduce the commission of driving violations","authors":"M. Elliott","doi":"10.1080/18128602.2010.502548","DOIUrl":"https://doi.org/10.1080/18128602.2010.502548","url":null,"abstract":"The capacity within an extended theory of planned behaviour (TPB) to change young drivers’ intentions and reduce their commission of driving violations was tested using regression-based statistical simulations. Participants (N = 198) completed questionnaire measures of TPB variables, plus moral norm and anticipated regret, each with respect to 11 different driving violations. One month later, subsequent behavioural performance was measured, again using self-completion questionnaires. Statistical simulations indicated substantial capacity within the extended TPB to reduce driving violations, with maximum changes to all of the cognitive predictors generating large degrees of intention and behaviour change (i.e. d > 0.80). However, the degree of intention change that was generated was greater than the degree of behaviour change, and sensitivity analyses demonstrated that behavioural interventions need to successfully change multiple cognitive variables in order to achieve meaningful reductions in driving violations. Implications of the findings for developing behaviour change interventions are discussed.","PeriodicalId":49416,"journal":{"name":"Transportmetrica","volume":"31 1","pages":"321 - 343"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/18128602.2010.502548","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"59925368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

Attribute exclusion strategies in airline choice: accounting for exogenous information on decision maker processing strategies in models of discrete choice 航线选择中的属性排除策略:考虑离散选择模型中决策者加工策略的外生信息

Transportmetrica Pub Date : 2012-09-01 DOI: 10.1080/18128602.2010.506897

J. Rose, D. Hensher, W. Greene, S. Washington

引用次数: 26

Regret theory-based route choices and traffic equilibria 基于后悔理论的路径选择与交通均衡

Transportmetrica Pub Date : 2012-07-01 DOI: 10.1080/18128602.2010.498391

C. Chorus

引用次数: 114