Joint rate control and scheduling for wireless uplink video streaming

INTRODUCTION Video streaming is becoming one of the major driving forces of next generation wireless networks. For the currently deployed cellular networks, the practical data rates are not enough to support full rate, high quality video applications. As a result, many research efforts have been devoted to adapting video content to reconcile the conflict between the high demand of video quality and the limited wireless communication resources among users. A large body of literature utiliz…     

Psychosocial correlates of child abuse potential in multiply disadvantaged adolescent mothers

OBJECTIVE: This study had two aims: First to examine psychosocial correlates of child maltreatment risk, and second to assess the validity of the CAP Inventory (Milner, 1986) with multiply disadvantaged teenage mothers. METHOD: Participants were 75 adolescent mothers who were wards of the Illinois child protection system. Mothers (aged 14-18) and infants participated in home-based psychosocial assessment of personal and parenting functioning. Group comparisons examined differences for mothers with elevated versus normal versus invalid CAP scores due to faking good. RESULTS: Findings indicated that abuse risk groups differed on emotional distress, social support satisfaction, reading achievement, and years of education, but not on parenting beliefs or quality of child stimulation. Differences favored the normal over the elevated risk group in all significant comparisons, whereas mothers with elevated faking good differed from normals only in lower reading achievement. Multiple regression analysis highlighted emotional distress, support dissatisfaction, and low achievement as significant predictors of greater abuse risk. CONCLUSIONS: Despite sharing multiple disadvantages, adolescent wards are a heterogeneous group who show different levels of psychosocial functioning corresponding to levels of child maltreatment risk. The findings provide support for the concurrent validity and clinical applicability of the CAP Inventory with disadvantaged teenage mothers.     

舞动的心

“鲍勃!鲍勃!”我身旁的女人大声命令着,“告诉她你去年为什么不愿跟那个女人结婚!”桌子对面的鲍勃顺从地粗着嗓子回答：“哦,她呀!那真是糟透了!她对我说,要是想跟她结婚的话,我就再也不能去跳舞了!我就告诉她,‘噢,我想我做不到。’”     

Instructing adolescents with learning disabilities: converting a meta-analysis to practice

A previous meta-analysis indicated that eight instructional factors--Questioning, Sequencing and Segmentation, Skill Modeling, Organization and Explicit Practice, Small-Group Setting, Indirect Teacher Activities (e.g., homework), Technology, and Scaffolding-captured the majority of successful intervention programs for adolescents with learning disabilities (LD). Most important was the Organization/Explicit factor, which contributed significant variance (16%) to effect size. This factor included two important instructional components: advance organization and explicit practice. In this article, we convert these findings into practical guidelines to direct instructional practice.     

校园网建设要注重前期的规划与设计

提出在校园网建设前期应明确其使用对象及功能；讨论了其规划与设计中在基础建设、软件建设、队伍建设及依据学校自身特点等方面应注重的几个主要问题。     

张爱玲——开在尘埃中的花

有人说,在饥寒交迫、心事煎熬的时候,你不要读张爱玲,因为她笔下的场景会使你有一种奢华的反感。但是,如果你丰衣足食、快乐欢欣的时候,你也不要读张爱玲,因为她讲的故事会让你感觉有一股阴森的冷气透入骨髓,会让你有一种苍凉和幻灭感。     

浅谈“For sb.+to do与“of sb.+to do”的用法上的区别

1两个句型的不同用法英语中多次出现It is+adj.+for sb.+to do与It+is adj.+of sb.+to do这两种很相似的句型,到底是for sb.+to do还是of sb.+to do?大家会对此句型的掌握有些模糊,可以从几点来区别使用它们。以下谈谈我的理解与看法。这两个句型中何时用"for",何时用"of";如果既描述行为,又描述作出这     

北太平洋巨型章鱼

北太平洋巨型章鱼是170余种巨型章鱼中的一种。人们曾经误把它们看成为海怪,实际上,它们性格平和,并不像古老传说描述的那样会攻击船只。     

战胜冰淇淋的秘密武器

妈妈只要一想到夏天,就头疼,因为家有捣蛋鬼之后,夏天让人不那么省心。孩子总是大汗淋漓地到处奔跑,嚷嚷着要吃冰淇淋,妈妈要费不少的力气和口舌来对付,因为吃冰淇淋多了,对孩子的健康并不是好事。这个夏天,妈妈们一定要准备一些战胜冰淇淋的秘密武器哦。