肝硬化患者中血小板参数联合D-二聚体检测的临床意义

探讨血小板参数联合D-二聚体检测在肝硬化患者中的临床意义。选取73例肝硬化患者按Child-pugh评分分为A、B、C级并进行血清PLT、PDW、MPV及D-二聚体的检测,同时检测肝硬化患者中消化道出血及无消化道出血患者的上述参数。30例健康体检者作为对照组。发现肝硬化患者PI。T显著降低,PDW、MPV、D-二聚体显著升高,肝硬化出血组与非出血组亦有明显差异。表明肝硬化患者血小板参数与联合D-二聚体检测可以间接反映临床出血倾向及肝功能变化。     

Remote identification of psychophysiological parameters for a cognitive-emotional conflict

The contradiction between the conscious and emotional assessment of situations often arises when there is a discrepancy between reality and ideal view. The purpose of this study is to identify a system of remotely diagnosed parameters (by video recording using Skype tools), which can objectively indicate the presence of a cognitive-emotional conflict during a dialogue. The current study has become particularly relevant in the COVID-19 environment, where face-to-face communication is limited, and all interactions must occur in a remote online format. In such an environment, the identification of formal signs indicating latent conflicts in online interactions comes to the fore. To stimulate an outburst and fix the cognitive-emotional conflict remotely, various schemes were used: interviews based on the self-attitude technique, discussions based on the transactional analysis model, free reasoning about situations that were selected by the age, and other parameters of participants, as well as watching video clips with an unexpected end. For automatic marking of people's emotional reactions in video data, a computer program was developed using neural network algorithms based on VGG16.Furthermore, the neural network for emotion recognition was pretrained based on open sources by the P. Ekman FACS model. Finally, video recordings were marked according to the expert assessment results regarding the presence of cognitive-emotional conflict. We conducted 27 interviews with the participation of both genders, including ten high school students (from 12 to 17 years old), a total of 338,075 frames were received. As a result, it was found that the two facial expression parameters identified by the program reliably distinguish the presence of a cognitive-emotional conflict. Furthermore, in all the studied schemes of telecommunication dialogue, the «happy» parameter was significantly more pronounced in a situation of conflict.     

Sysmex血细胞分析仪检测中血小板参数不显示的原因分析

Sysmex血细胞分析仪是医院临床检验常规仪器。用于白细胞,红细胞,血小板及其相应参数的检测。由于其在检测过程中存在血小板参数不显示的现象,本文通过分析其不显示的原因,提示临床检验工作者努力减少血小板参数不显示的现象,从而提高血小板参数的检出率及准确率。     

Effect of Bilateral and Unilateral Plantarflexor Muscle Fatigue on Blind Navigation Precision and Gait Parameters

Abstract

The objective was to evaluate the impact of bilateral and unilateral fatigue of the plantarflexor muscles on blind navigation. Thirty-eight young adults walked 8-m without vision before fatigue (pre-fatigue), then fatigued either one or both of their plantarflexor muscles by performing isometric contractions. After each fatigue, two blind navigation trials were performed (post-fatigue trials 1 and 2). Results revealed no effect of bilateral muscle fatigue on navigation precision and gait parameters. Unilateral muscle fatigue led to longer linear distance travelled during post-fatigue trial 2 compared to pre-fatigue and to a change in angular deviation between pre- and post-fatigue. In general, results suggest that participants were able to make adaptive changes to counter muscle fatigue during blind navigation.     

The Relationship between Response-Time Effort and Accuracy in PISA Science Multiple Choice Items

The study examined the relationship between examinees’ test-taking effort and their accuracy rate on items from the PISA 2015 assessment. The 10% normative threshold method was applied on Science multiple-choice items in the Cyprus sample to detect rapid guessing behavior. Results showed that the extent of rapid guessing across simple and complex multiple-choice items was on average less than 6% per item. Rapid guessers were identified, and for most items their accuracy was lower than the accuracy for students engaging in solution-based behavior. A number of plausible explanations were graphically evaluated for items for which accuracy was higher for the rapid guessing subgroup. Overall, this empirical investigation presents original evidence on test-taking effort as measured by response time in PISA items and tests propositions of Wise’s (2017 Wise, S. L. (2017). Rapid‐guessing behavior: Its identification, interpretation, and implications. Educational Measurement: Issues and Practice, 36(4), 52–61. doi:10.1111/emip.12165[Crossref], [Web of Science ®] , [Google Scholar]) Test-Taking Theory.