基于OpenMP的星载SAR回波信号并行仿真

本文首先介绍了星载SAR回波信号仿真相关技术,包括星地空间几何模型、回波信号数学模型和距离频域脉冲相干法。在此基础上给出了一种星载SAR回波信号仿真方案,并详细给出了其仿真算法流程。然后通过对仿真算法流程的并行性分析,以并行编程标准OpenMP为基础对仿真算法进行了并行化。仿真实验结果证明了并行仿真算法的正确性和高效性。     

脆弱生丝的成因研究

研究发现霉变是造成丝条脆弱的主要原因,缫丝工艺条件的变化也是诱发脆弱丝的重要因素．通过扫描电镜照片对脆弱丝表面形态进行了观察．     

Comparison of children’s free-living physical activity derived from wrist and hip raw accelerations during the segmented week

This study assessed children’s physical activity (PA) levels derived from wrist-worn GENEActiv and hip-worn ActiGraph GT3X+ accelerometers and examined the comparability of PA levels between the two devices throughout the segmented week. One hundred and twenty-nine 9–10-year-old children (79 girls) wore a GENEActiv (GAwrist) and ActiGraph GT3X+ (AGhip) accelerometer on the left wrist and right hip, respectively, for 7 days. Mean minutes of light PA (LPA) and moderate-to-vigorous PA (MVPA) per weekday (whole-day, before-school, school and after-school) and weekend day (whole-day, morning and afternoon–evening) segments were calculated, and expressed as percentage of segment time. Repeated measures analysis of variance examined differences in LPA and MVPA between GAwrist and AGhip for each time segment. Bland–Altman plots assessed between-device agreement for LPA and MVPA for whole weekday and whole weekend day segments. Correlations between GAwrist and AGhip were weak for LPA (r = 0.18–0.28), but strong for MVPA (r = 0.80–0.86). LPA and MVPA levels during all weekday and weekend day segments were significantly higher for GAwrist than AGhip (p < 0.001). The largest inter-device percent difference of 26% was observed in LPA during the school day segment. Our data suggest that correction factors are needed to improve raw PA level comparability between GAwrist and AGhip.     

增设"非货币性资产交易"科目核算换入原材料

增设“非贸币性资产交易”科目核算非货币性交易换入原材料等存货事项，其作用：具有全面性，包括非货币性资产换出短期投资存货、固定资产、无形资产、长期投资等。具有明晰性，以会计分录列示非货币性资产交易账务处理程序。具有客观性，非货币性资产交易损益资本化可以避免操纵利润。具有可操性，会计科目括号内附有记录数据的来龙去脉。     

鲁智深形象源流考

鲁智深是《水浒传》中唯一有着两个名号的英雄：鲁达和鲁智深。鲁氏僧、俗两形象是来自两个不同的素材系统，、而俗人鲁达形象很可能是较晚进入《水浒》文本的。这一莽和尚形象的塑造，最初大概受“杨家将”人物杨五郎的启迪，并借鉴参考了“董西厢”、“王西厢”中法聪、惠明等形象。宋洪迈《夷坚志》也为花和尚的故事提供了不少素材。鲁智深出奇寻沽、大闹禅室、醉打山门、倒拔垂杨等情节，都与《夷坚志》有着直接的关联。     

从毛入学率角度看我国高教发展

本文应用计量经济学和国际比较的方法,从高等教育毛入学率的角度入手,选取具有代表性的20个国家的相关数据,针对1999年的世界高教发展水平做了相应的回归分析,并在此基础之上对影响我国高等教育发展的若干因素做了初步探讨。     

“定额成本法”与“标准成本法”的比较

通过对“定额成本法”与“标准成本法”的比较,说明两种方法在概念、核算内容、计算方法、账务处理的异同及其评价,以便在计算产品成本中,能够做到灵敏运用和行之有效地控制产品成本费用。     

生鲜猪肉新鲜度的检测及贮藏品质评价

目的检测市售生鲜猪肉新鲜度并评价其贮藏品质.方法不同时间段选择代表性市场采集样品,在冷藏（0℃）条件下对样品进行新鲜度检测和贮藏品质分析.结果综合感官评分、pH检测、挥发性盐基氮检测和细菌总数检测表明生鲜猪肉在0-6d内符合新鲜肉相关的指标规定.结论生鲜猪肉0-6d内具有较好的新鲜度且贮藏品质相对稳定.     

普洱生茶、熟茶与红茶主要化学成分的比较研究

用高效液相色谱仪（HPLC）分析普洱生茶、熟茶与红茶的主要化学成分含量（质量分数）.结果表明：普洱生茶、熟茶及红茶在278 nm处具有截然不同的色谱图及化学成分.普洱生茶保留了较多的ECG,EGCG以及C等多酚类物质;红茶因其酶促作用形成了一系列的氧化产物—茶黄素类和茶红素类,也保留了一定量的未氧化的多酚类物质;而普洱熟茶的湿热作用却只形成一定量的TR,未氧化多酚类物质的含量（质量分数）也较低,ECG和EGCG几乎完全氧化,且氧化产物中不含茶黄素类.     

浅谈食品加工企业不合格原材料的会计核算方法

食品加工企业中原材料的质量问题直接影响到产成品的质量,在采购环节对原材料的验收有严格的要求,在入库前会剔除一些不合格的原材料,这些不合格原材料无论是从企业会计制度的角度还是从企业的纳税筹划的角度都不应计入采购成本。