从朦胧走向清晰——我国东亚钳蝎及其有效成分研究进展中的启示

本文叙述了我国东亚钳蝎及其有效成分的研究进展，揭示了科学研究中研究方法对于科学认识的推动作用以及辨证唯物主义理论体系中系统论的科学性及重要性。     

Comparing the Effects of Unknown-Known Ratios on Word Reading Learning Versus Learning Rates

An extension of G. L. Cates et al. (2003) investigation was conducted to determine if students’ cumulative learning rates would be superior for words read under a traditional drill and practice condition (as they were for spelling in the previous study) than under interspersal conditions of varying ratios of unknown to known words. Participants consisted of three intermediate grade students who were delayed readers. They received a less challenging ratio of unknown to known word (High-P sequencing) interspersal procedure, a more challenging ratio of unknown to known word interspersal training procedure, and a traditional drill and practice procedure in an alternating fashion across several tutoring sessions. Cumulative words read with mastery and cumulative rates of words read with mastery were measured across sessions for each participant under each instructional condition. Findings were consistent with the Cates et al., study revealing that children learn more words per minute of instructional time under the traditional drill and practice condition. These results further support examining instructional efficiency as well as effectiveness when making decisions about selecting and implementing interventions.     

From da Vinci to CAD and beyond

Here what I would like to accomplish is to set something of the stage from which the growing recognition of what I shall now term technoscience’s visualism—a term which can accommodate both sciences and engineering, and both imaging and design practices—takes its recognition. I shall very briefly look at the ‘godfathers and peers’ who help set this stage, and then proceed to an examination of a few moments in the development of visualism from da Vinci to computer assisted design (CAD) and beyond.     

Spatio-temporal constraints on upright children's coordination when hitting a moving target

To determine if the spatial and/or temporal context affected the coordination patterns of children under five in upright interceptive tasks, 3-year-olds hit a ball dropped from a ramp from five heights (1.5, 2, 2.5, 3, and 3.5 m) to control drop time. We studied the initiation time of hitting a ball with a cinematic analysis of the different joint movements (foot, knee, hip, shoulder, and hand). Two patterns of joint coordination were observed according to the rolling height of the ball: a de-synchronized pattern for heights of 2 m or above where the foot was the first to move and the hand the last, and a “synchronized” pattern, for the lowest height (1.5 m) where all joints started moving at the same time due to a strong temporal pressure. These two coordination patterns highlight a functional adaptation of body joints according to the spatio-temporal constraints among children from the age of three.     

Word acquisition, retention, and transfer: findings from contextual and isolated word training

Successful reading instruction entails not only acquiring new words but also remembering them after training has finished and accessing their word-specific representations when they are encountered in new text. We report two studies demonstrating that acquisition, retention, and transfer of unfamiliar words were affected differentially by isolated word and context training. Materials were individualized to include only those words that average readers in second grade were unable to name in context. Different words were trained in each condition; context training presented words in stories, and isolated word training presented words on flashcards. Together, the studies show that context training promotes word acquisition beyond that experienced from reading words in isolation. Contrary to the prevailing opinion, memory performance for words trained in context and in isolation did not differ; children demonstrated excellent retention over an 8-day interval in both conditions. Finally, transfer was maximized when the congruency between training and testing was high. Therefore, when reading trained words in novel circumstances, the best method of training was mediated by the transfer task employed at test.     

The Continuing Role of Hardiness and Grit on Performance and Retention in West Point Cadets

Being an army reservist involves stress and uncertainty. While some individuals use exercise to cope with stress, no previous research has ever studied the relationship between army reservists exercise habits and perceived stress. The current study examined the hypothesis that Israeli army reserves in combat roles would report greater perceived stress and (to cope with the stress) exhibit more intensive exercise habits, as well as higher risk for exercise addiction, than the army reserves who are in a non-combat (i.e., office job) role and controls who are not in the army reserve. Participants (n = 277) completed questionnaires assessing their regular exercises habits, perceived stress, and risk for exercise addiction. The results showed that combat reserves scored higher on all dependent measures than non-combat reserves and controls. Perceived stress accounted for 38.8% to 56.6% of the variance in the risk of exercise addiction. Findings suggest that Israeli army reserves in combat role exercise more, for longer episodes, with greater reported intensity, and are at a greater risk for exercise addiction than the reserves in non-combat roles and controls. The higher risk for exercise addiction in the combat reserves, accompanied by a lower predictive power of the perceived stress, reflects a weaker association between these two variables in this group, most likely because combat reserves feel obliged to be physically fit in case of active deployment. This is the first study to show that differences in reservists’ roles is associated with different levels of risk for exercise addiction.