不经历风雨，怎么见彩虹？——机诫制造及自动化专业简介

机械制造行业是人们广为熟知的一个行业，担负着为各行各业制造并提供机械设备和电器装置的任务。机械制造行业中既有规模庞大、员工过万的国有超大型企业，也有遍布城乡的集体和个体企业，几十年来，它们为国民经济的发展和综合国力的增强作出了巨大的贡献。近年来，随着新技术突飞猛进的发展以及我国改革开放的深化，传统的机械制造企业已难以适应蓬勃发展的市场经济的要求，逐渐陷入经营困难的境地。各行各业为提高效率、增强竞争力，争先引进国外先进的机械装备，这对我国机械制造企业无疑是雪上加霜。     

An experimental, observational investigation of children's responses to peer provocation: developmental and gender differences in middle childhood

The primary goal of this research was to use an experimental, observational method to study the development of anger expression during middle childhood. Eight-, 10-, and 12-year-old girls and boys (N = 382) were observed during a laboratory play session that was provoking in two ways: Participants lost a computer game they were playing for a desirable prize, and their play partner was a same-age, same-gender confederate actor who taunted them. Children's responses to the provoking play sessions--facial expressions, verbalizations, and gestures--were reliably coded. Overall, children in these age groups maintained a remarkable degree of composure. Girls made fewer negative comments than boys did, and fewer negative gestures. Older children maintained more neutral facial expressions, made fewer gestures, and were more likely to remain silent when provoked. When they spoke, older children made fewer negative comments, fewer remarks about the game, and fewer positive comments about themselves or the actor.     

A Spanish perspective on LD

This article offers an overview of special education in Spain, specifically in the area of learning disabilities (LD). The term LD in Spain implies a different conception of the definition that enjoys considerable international agreement and consensus. We give a historical perspective of Spanish legislation and place the proposed definition of LD in the context of recent school reform in Spain. The support services model and the assessment practices and instructional approaches in the LD field are described. Finally, some educational implications of the new school reform regarding teacher training programs to assist special educational needs are presented.     

How neighborhoods influence child maltreatment: a review of the literature and alternative pathways

OBJECTIVE: To review the literature on the relationships between neighborhoods and child maltreatment and identify future directions for research in this area. METHOD: A search of electronic databases and a survey of experts yielded a list of 25 studies on the influence of geographically defined neighborhoods on child maltreatment. These studies were then critically reviewed by an interdisciplinary research team. RESULTS: Numerous studies demonstrate that child maltreatment cases are concentrated in disadvantaged areas. A number of socio-economic characteristics of neighborhoods have been shown to correlate with child maltreatment rates as measured by official reports to child protective service agencies. Only a few studies examine direct measures of parenting behaviors associated with maltreatment, and these show a weaker relationship with neighborhood disadvantage. Moreover, the processes that link neighborhood conditions to either maltreatment reports or parenting behaviors are not yet confirmed by the research literature. Selection bias, neighborhood definitions and spatial influences are largely uncontrolled in the existing research. CONCLUSIONS: We propose a framework for pursuing further study of neighborhoods and child maltreatment that addresses the gaps in the current literature. Neighborhood-based strategies to prevent and reduce child maltreatment will be enhanced by research that provides a better understanding of how neighborhood conditions act as stressors or supports for families at risk of child maltreatment.     

Childhood sexual abuse, attachment, and trauma symptoms in college females: the moderating role of attachment

OBJECTIVE: The present study tests a model linking attachment, childhood sexual abuse (CSA), and adult psychological functioning. It expands on previous work by assessing the degree to which attachment security moderates the relationship between a history of child sexual abuse and trauma-related symptoms in college females. METHOD: Self-reports of attachment, childhood sexual abuse, and adult psychological functioning were obtained from 324 female undergraduate students attending a Southeastern U.S. university. Separate analyses were conducted examining the potential moderating role for close-adult, parent-child, and peer attachment styles. RESULTS: In this sample, 37.7% of participants reported sexually abusive experiences prior to age 16. History of child sexual abuse was consistently associated with higher levels of trauma-related symptoms and lower levels of attachment security in close-adult, parent-child, and peer relations. Additionally, attachment security was consistently associated with trauma-related symptoms. Close-adult, parent-child, and peer attachment differentially moderated trauma-related symptoms. Specifically, in peer relationships, the strength of the relationships between attachment measures and trauma symptoms were greater for CSA survivors than for non-abused participants. The opposite pattern of results was found for attachment in parental and close-adult relationships. CONCLUSION: Results suggest that attachment security in peer and parent relationships protects against the negative effects of CSA, while only weak, marginally significant protective effects were observed for close-adult relationships. Only modest support was found for the conceptualization of attachment as a moderator of the relationship between CSA and trauma-related symptoms. However, the results suggest that attachment security at least partially protects against negative CSA outcomes.     

Contrasting AAC and ABC renewal: the role of context associations

Rats were used in a lick suppression preparation to assess the contribution of conditioned-stimulus (CS)–context and context–unconditioned-stimulus (US) associations to experimental extinction. Experiment 1 investigated whether strengthening the CS–acquisition context association enhances extinction by determining whether stronger extinction is observed when CS-alone trials (i.e., extinction treatment) are administered in the acquisition context (AAC renewal), relative to a context that is neutral with respect to the US (ABC renewal). Less recovery of responding to the CS was observed in the former than in the latter case, extending the finding that AAC renewal is weaker than ABC renewal to our lick suppression preparation. Experiment 2 assessed the contribution of the acquisition context–US association to extinction of a CS by examining the effect of postextinction exposure to the acquisition context on responding to the extinguished CS. This manipulation enhanced responding to the extinguished CS in AAC, but not ABC, renewal. Experiment 3 addressed the contribution of the CS–acquisition context association by examining the potential of a neutral stimulus, presented in compound with the target CS during extinction treatment, to overshadow the CS–acquisition context association. This manipulation enhanced responding to the extinguished CS in AAC, but not ABC, renewal. The results stress the important role of contextual association in extinction and renewal.     

Attributions and Attitudes of Mothers and Fathers in the United States

OBJECTIVE.: The present study examined mean level similarities and differences as well as correlations between U.S. mothers' and fathers' attributions regarding successes and failures in caregiving situations and progressive versus authoritarian attitudes. DESIGN.: Interviews were conducted with both mothers and fathers in 139 European American, Latin American, and African American families. RESULTS.: Interactions between parent gender and ethnicity emerged for adult-controlled failure and perceived control over failure. Fathers reported higher adult-controlled failure and child-controlled failure attributions than did mothers, whereas mothers reported attitudes that were more progressive and modern than did fathers; these differences remained significant after controlling for parents' age, education, and possible social desirability bias. Ethnic differences emerged for five of the seven attributions and attitudes examined; four remained significant after controlling for parents' age, education, and possible social desirability bias. Medium effect sizes were found for concordance between parents in the same family for attributions regarding uncontrollable success, child-controlled failure, progressive attitudes, authoritarian attitudes, and modernity of attitudes after controlling for parents' age, education, and possible social desirability bias. CONCLUSIONS.: This work elucidates ways that parent gender and ethnicity relate to attributions regarding U.S. parents' successes and failures in caregiving situations and to their progressive versus authoritarian parenting attitudes.     

Family adversity,positive peer relationships,and children's externalizing behavior: a longitudinal perspective on risk and resilience

Peer acceptance and friendships were examined as moderators in the link between family adversity and child externalizing behavioral problems. Data on family adversity (i.e., ecological disadvantage, violent marital conflict, and harsh discipline) and child temperament and social information processing were collected during home visits from 585 families with 5-year-old children. Children's peer acceptance, friendship, and friends' aggressiveness were assessed with sociometric methods in kindergarten and grade 1. Teachers provided ratings of children's externalizing behavior problems in grade 2. Peer acceptance served as a moderator for all three measures of family adversity, and friendship served as a moderator for harsh discipline. Examination of regression slopes indicated that family adversity was not significantly associated with child externalizing behavior at high levels of positive peer relationships. These moderating effects generally were not qualified by child gender, ethnicity, or friends' aggressiveness, nor were they accounted for by child temperament or social information-processing patterns. The need for process-oriented studies of risk and protective factors is stressed.     

Sexual victimization and adolescent weight regulation practices: a test across three community based samples

OBJECTIVE: This study had four objectives: 1) to examine the association between sexual victimization and weight regulation across three samples of adolescent girls, 2) to assess whether sexual victimization is associated with more extreme forms of weight regulation in girls, 3) to discern whether sexual victimization has implications for the use of multiple forms of weight regulation, and 4) to address the role of physical victimization in explaining these relationships. METHOD: Data from three separate samples of 9th-12th graders were used to test these hypotheses. Girls from the upper Midwest responded to survey questions related to victimization and weight regulation in a largely urban sample (N = 2,086), a rural sample (N = 2,629), and a statewide sample (N = 966). RESULTS: Logistic regression revealed that sexual victimization was consistently associated with weight regulation in adolescent girls, independent of the effects of physical victimization. In the urban sample, being sexually victimized was associated with an increase in the probability of purging by 18% relative to not being sexually victimized. Sexual victimization was associated more strongly with extreme forms of weight regulation and significantly discriminated whether girls would choose multiple weight regulation forms. CONCLUSIONS: Sexual victimization contributes unique variance to the probability that girls will practice weight regulation techniques. Data from three independent samples confirms that being violated sexually places girls at risk for various health compromising eating behaviors.     

Relating quality of center-based child care to early cognitive and language development longitudinally

How quality of center-based child care relates to early cognitive and language development was examined longitudinally from 6 to 36 months of age in a sample of 89 African American children. Both structural and process measures of quality of child care were collected through observation of the infant classroom. Results indicated that higher quality child care was related to higher measures of cognitive development (Bayley Scales of Infant Development), language development (Sequenced Inventory of Communication Development), and communication skills (Communication and Symbolic Behavior Scales) across time, even after adjusting for selected child and family characteristics. In addition, classrooms that met professional recommendations regarding child:adult ratios tended to have children with better language skills. Classrooms that met recommendations regarding teacher education tended to have girls with better cognitive and receptive language skills. These findings, in conjunction with the growing child-care literature, provide further evidence that researchers and policymakers should strive to improve the quality of child care to enhance early development of such vulnerable children.