From the Editor’s Desk     

Ruth Trinidad Galván  Enrique G. Murillo 《Journal of Latinos & Education》2017,16(4):273-275

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Going with the affective flows of digital school absence text messages     

Linnea Bodén 《Learning, Media and Technology》2017,42(4):406-419

Focusing on digital text messages containing information about students’ absences and sent to parents by schools, the paper investigates the way school absenteeism is produced within affective assemblages. The paper unfolds a theoretical and methodological approach of ‘going with’ the text messages, in entanglements of affective flows. The empirical engagements, produced together with multiple agents in two Swedish schools, show that within the assemblages of human and nonhuman bodies, the text messages can become ‘stirrers’ that evoke nervousness and anxiety, but also excitement and feelings of control that affect the production and conception of absenteeism. The affective flows of text messages thus travel in all directions, with and against notions of linearity. The conclusion emphasizes how the text messages, as affective materialities, are an inextricable part of the production of school absenteeism in multiple and sometimes unexpected ways.  相似文献   

ASP：应用软件销售的革命     

潘绍杰  孙志斌 《科技与管理》2001,3(2):17-19,43

国际互联网的迅速发展，使应用软件的销售模式发生了翻天覆地的变化。企业可以不必购买先进昂贵的应用软件，只需通过ASP就可以在网上及时获得所需的应用软件以及相关的服务。因此，对ASP的定义、分类、市场培育以及前景作了详细分析，并对中国ASP市场的发展做出展望。  相似文献   

分子伴侣与蛋白质折叠   总被引：2，自引：0，他引：2  

井明艳  孙建义 《科技通报》2004,20(5):407-411

新合成的多肽链必须先经折叠和装配后形成特定的三维结构才具有活性．在多肽链折叠过程中，往往会产生折叠异常蛋白，形成集聚体．分子伴侣可有效地调控多肽链的正确折叠，从而避免集聚体的形成．文章主要对分子伴侣的定义、作用、种类、特性等做一介绍。  相似文献   

Estimation of 2-D ARMA model parameters by using equivalent AR approach     

Ayd?n K?z?lkaya 《Journal of The Franklin Institute》2005,342(1):39-67

In this paper, the problem of estimating the parameters of a two-dimensional autoregressive moving-average (2-D ARMA) model driven by an unobservable input noise is addressed. In order to solve this problem, the relation between the parameters of a 2-D ARMA model and their 2-D equivalent autoregressive (EAR) model parameters is investigated. Based on this relation, a new algorithm is proposed for determining the 2-D ARMA model parameters from the coefficients of the 2-D EAR model. This algorithm is a three-step approach. In the first step, the parameters of the 2-D EAR model that is approximately equivalent to the 2-D ARMA model are estimated by applying 2-D modified Yule-Walker (MYW) equation to the process under consideration. Then, the moving-average parameters of the 2-D ARMA model are obtained solving the linear equation set constituted by using the EAR coefficients acquired in the first step. Finally, the autoregressive parameters of the 2-D ARMA model are found by exploiting the values obtained in first and second steps. The performance of the proposed algorithm is compared with other 2-D ARMA parameter and spectral estimation algorithms available in the technical literature by means of three different criteria. As a result of this comparison, it is shown that the parameters and the corresponding power spectrums estimated by using the proposed algorithm are converged to the original parameters and the original power spectrums, respectively.  相似文献   

The impact of a peer-tutoring program on quality standards in higher education     

José L. Arco-Tirado  Francisco D. Fernández-Martín  Juan-Miguel Fernández-Balboa 《Higher Education》2011,62(6):773-788

The purposes of this study were, on one had, to determine the impact of a peer tutoring program on preventing academic failure and dropouts among first-year students (N = 100), from Civil Engineering, Economics, Pharmacy, and Chemical Engineering careers; while, on the other hand, to identify the potential benefits of such tutoring program on the cognitive and metacognitive learning strategies and social skills of student mentors in their last year of studies or already in a postgraduate program (N = 41) at the University of Granada (Spain). After building and selecting the measurement instruments necessary to gather demographic and academic relevant information on both samples, and assigning first-year students to either an experimental or control group, the intervention consisted of ten 90-min tutoring sessions during the first semester lead by student tutors who, in turn, had undergone four 3-h training sessions on tutoring contents like planning and time management, cognitive and metacognitive learning strategies, motivational strategies and the use of materials designed ad hoc for this program. The results show differences in favour of the treatment group on grade point average, performance rate, success rate and learning strategies and, also, statistically significant pre-post differences for the tutors on learning strategies and social skills.  相似文献   

Early contribution of phonological awareness and later influence of phonological memory throughout reading acquisition     

Christelle Nithart  Elisabeth Demont  Marie‐Noëlle Metz‐Lutz  Steve Majerus  Martine Poncelet  Jacqueline Leybaert 《Journal of Research in Reading》2011,34(3):346-363

The acquisition of reading skills is known to rely on early phonological abilities, but only a few studies have investigated the independent contribution of the different steps involved in phonological processing. This 1‐year longitudinal study, spanning the initial year of reading instruction, aimed at specifying the development of phonological discrimination, awareness and various aspects of phonological memory and at assessing their respective contributions to early reading acquisition. Our results show an increase in performance at each phonological processing step, but also suggest a qualitative evolution in their relative importance. Hierarchical regression analyses indicate that reading skills are mainly predicted by phonological awareness measured at the kindergarten stage and, subsequently, by phonological memory abilities measured at the end of first grade. More precisely short‐term memory for serial‐order information seems to contribute to the development of decoding abilities, while phonological knowledge stored in long‐term memory seems to influence word recognition.  相似文献   

Contextual predictive factors of child sexual abuse: the role of parent-child interaction     

Ramírez C  Pinzón-Rondón AM  Botero JC 《Child abuse & neglect》2011,35(12):1022-1031

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Emotion recognition in fathers and mothers at high-risk for child physical abuse     

Asla N  de Paúl J  Pérez-Albéniz A 《Child abuse & neglect》2011,35(9):712-721

Objective

The present study was designed to determine whether parents at high risk for physical child abuse, in comparison with parents at low risk, show deficits in emotion recognition, as well as to examine the moderator effect of gender and stress on the relationship between risk for physical child abuse and emotion recognition.

Methods

Based on their scores on the Abuse Scale of the CAP Inventory (Milner, 1986), 64 parents at high risk (24 fathers and 40 mothers) and 80 parents at low risk (40 fathers and 40 mothers) for physical child abuse were selected. The Subtle Expression Training Tool/Micro Expression Training Tool ( [Ekman, 2004a] and [Ekman, 2004b]) and the Diagnostic Analysis of Nonverbal Accuracy II (Nowicki & Carton, 1993) were used to assess emotion recognition.

Results

As expected, parents at high risk, in contrast to parents at low risk, showed deficits in emotion recognition. However, differences between high- and low-risk participants were observed only for fathers, but not for mothers. Whereas fathers at high risk for physical child abuse made more errors than mothers at high risk, no differences between mothers at low risk and fathers at low risk were found. No interaction between stress, gender, and risk status was observed for errors in emotion recognition.

Conclusions and practice implications

The present findings, if confirmed with physical abusers, could be helpful to further our understanding of deficits in processing information of physically abusive parents and to develop treatment strategies specifically focused on emotion recognition. Moreover, if gender differences can be confirmed, the findings could be helpful to develop specific treatment programs for abusive fathers.  相似文献   

Intrafamilial conflict and emotional well-being: a population based study among Icelandic adolescents     

Gunnlaugsson G  Kristjánsson AL  Einarsdóttir J  Sigfúsdóttir ID 《Child abuse & neglect》2011,35(5):372-381

Objectives

During intrafamilial conflicts children are often innocent bystanders, caught in the crossfire. In such situations, they are at increased risk to become directly involved in abusive verbal behavior of the perpetrator, and exposed to being shouted or yelled at, threatened, rejected and even physically abused. The present study has two main objectives: (1) ascertain a national base rate of intrafamilial conflicts and physical violence at home among Icelandic adolescents; and (2) to investigate the association of witnessing and/or having been a part of intrafamilial conflict or physical violence at home with variables that relate to mental health and well-being.

Methods

The participants were 3,515 students, 14- and 15-year-old, in the national compulsory school system in Iceland. As a part of the 2003 ESPAD survey, each pupil was asked about experiences of severe verbal arguments and physical violence at home as well as their background, behaviors, and mental health assessed with the use of tested measurement scales such as the Symptom Distress Checklist 90 (SCL-90) and the Rosenberg Self-Esteem Scale.

Results

About 22% of the participants stated that they had witnessed a severe verbal argument between parents and 34% stated that they had been involved in a severe verbal argument with parents. This rate was slightly higher for girls compared to boys. All together 7% of adolescents had witnessed physical violence at home where an adult was involved and 6% of the participants stated that they had experiences of being involved in physical violence at home where an adult was involved. Witnessing or being involved in severe verbal arguments at home and/or witnessing or being involved in physical violence with an adult was significantly associated with greater levels of depression, anger, and anxiety, and negatively related with self-esteem (p < 0.01).

Conclusions

Many adolescents in Iceland witness severe parental verbal arguments or physical violence between adults in their homes and some are directly involved in such acts. It affects their long-term emotional and behavioral development and well-being.

Practice implications

Preventive measures have to be implemented at an early age and should include, but not be limited to, information on disciplining and upbringing of children and the negative impact of intrafamilial conflicts on the long-term health of their children. Due attention should be given to the health and well-being of children where such violence is known to occur.  相似文献