基于Python的文件统计程序开发

为解决考试过程中学生提交文件数量大、类型多、易出错等问题,以“实用软件应用”课程考核为例,采用Python语言及第三方库Pandas开发文件统计程序,按照需求分析、总体设计、模块实现,阐述开发流程,侧重介绍交互设计与精确统计函数。此程序既可满足日常作业统计需求,亦可满足考试文件即时统计需求,有效提升了统计的效率和准确性,且易于扩展和移植,具有较好的应用价值与推广价值。

基于统计特征值的文件类型识别算法

恶意篡改文件的类型属性以掩盖文件真实结构达到诱骗用户访问、回避检测、隐藏数据等目的是计算机犯罪行为中最常用的手段。该文提出的一种基于统计特性识别文件类型的方法能有效识别被篡改的文件类型属性。依据同类型文件在多维空间中的统计特征值具有相似性的规律,给出了判断其相似性的基本假设,设计了基于欧几里德距离的球体模型及k-球体模型,同时根据文件统计特征值权重的加权欧几里德距离优化两种模型,解决了相似性判断的正确性和效率。

高校办公自动化系统中公文统计自动化的设计实现

介绍了办公自动化(OA)系统中文件统计信息的重要性,提出了实现文件统计信息自动化的解决方案,阐述文件统计信息的自动化在提高公文流转效率中的作用。

高校OA系统中公文统计自动化的设计实现

介绍了OA系统中文件统计信息的重要性,提出了实现文件统计信息自动化的解决方案,阐述文件统计信息的自动化在提高公文流转效率中的作用。

加入CDDS与我国人口就业统计的发展

2002年4月15日,国际货币基金组织(IMF)首次以英文公布了中国统计数据文件,标志着中国正式成为IMF“数据公布通用系统”(General Data Dis-semination System,缩写为GDDS)的正式成员。我国加入GDDS是适应经济全球化、金融市场一体化的需要,也是我国进一步改革和扩大对外开放的需要。 一、GDDS的主要要求 (一)统计范围 GDDS将国民经济活动划分为5大经济部门:实际部门、财政部门、金融部门、对外部门和社会人口部门。对每一部门各选定一组能够反映其活动实绩和政策以及可以帮助理解经济发展和结构变化的最为重要的数据类别。系统提出了五大部门综合框架和相关的数据类别和指标编制、公布的目标,鼓励以适当的。

NoteExpress在撰写文章综述时的技巧解析

介绍文献管理软件NoteExpress(NE)在撰写文章综述时的技巧。文件夹信息统计功能可以系统地为使用者提供分析统计信息;引文自动调整顺序、快速格式化功能使得参考文献管理高效省时;迁移数据库功能方便研究者在更换工作地点的情况下顺利接续研究工作。

Storage Management Strategy of Flash-Based Platform

Storage management strategy can be expressed by a file system. Commercial file system for embedded application is generally complicated and resource wasted. In this paper, a specified file system adapted to embedded system with flash-based memory is developed. To guarantee the average usage of flash storage sectors, the strategy of wear leveling and adaptive damage management is introduced, in which a dynamic storage space management mode and the strategy of first in first out (FIFO) are adopted. Moreover, the strategy of redundancy design and fast-calculation and tracing is also adopted to extend the life of kernel sector, which can guarantee the reliable service of system booting. The practical application in an embedded CNC (computerized numerical control) platform proves that the file system has effective performance. Furthermore, the flash file system can be transplanted to different embedded platforms by changing a few bottom hardware parameters with universality.

An Interactive Model for Analyzing the Development of the Communication Discipline： Israel as a Case Study

Our paper presents an interactive four-dimensional model for studying the long- and short-term development of the communication discipline with Israel serving as a case study： institutional-contextual, institutional-in-field, intellectual-contextual, and intellectual-in-field. Our empirical analysis utilized personal interviews, archive documents, and statistical data. Four main processes were discerned： transition from integration to alienation between institutions of higher learning and the larger political and ideological context; a shift from Hebrew University Institute of Communication＇s institutional monopoly to a multiplicity of increasingly competitive communication schools/departments; transition from intellectual hegemony to limited intellectual diversity; and gradually improving status for the communication field among social science disciplines. Our case-study analysis validated the interactive relationship among the model＇s conceptual dimensions, calling for future cross-national comparisons.

The Influence of Social Dimensions on Bribery in Public Sector Institutions in Libya

This paper investigates social dimensions in the Libyan family and their relationship to the common practice of bribery. In Libya, bribery is most noticeable in administrative contexts where other practices such as favouritism, fraud and forgery are also found. The paper aims to make an original contribution to knowledge in a little-researched area by examining social dimensions and cultural practices. The paper is based on the basic assumption that there is a relationship between accepting bribes and social dimensions surrounding the family in Libya and will thus also examine bribery as a social culture, by means of a set of variables such as gifts, promises, assistance and loans. The study took place in Benghazi, Libya, where the number of employees exceeded 200. The study was conducted using an interpretative epistemology and a quantitative method. Data were collected using quantitative research instruments and the Statistical Package for the Social Sciences （SPSS） was used to analyse the data. The findings of the study suggest that there is a relationship between family relationships, social status and the commission of the crime of bribery except for variables of social status and cultural background, in addition to the social relationship＇s effect on administration.

Hazardous Events on the Black Sea Rivers, Their dynamics and Regulation

The historical, informational and literary sources regarding flooding have been studied. Based on the statistical processing of multiyear stationary observation data the river maximal discharge parameters are specified. According tendency of their dynamics the flooding strengthening has been revealed on rivers nourished by glaciers, on the contrary in other rivers they reduced, in some regions evaporation has been increased and desertifieation has been detected. For mitigation negative impacts of those processes the recommendations of prevention measures are drafted.

Comparisons of GCM cloud cover parameterizations with cloud-resolving model explicit simulations

Three kinds of the widely-used cloudiness parameterizations are compared with data produced from the cloud-resolving model(CRM) simulations of the tropical cloud system. The investigated schemes include those based on relative humidity(RH), the semi-empirical scheme using cloud condensate as a predictor, and the statistical scheme based on probability distribution functions(PDFs). Results show that all three schemes are successful in reproducing the timing of cloud generation, except for the RH-based scheme, in which low-level clouds are artificially simulated during cloudless days. In contrast, the low-level clouds are well simulated in the semi-empirical and PDF-based statistical schemes, both of which are close to the CRM explicit simulations. In addition to the Gaussian PDF, two alternative PDFs are also explored to investigate the impact of different PDFs on cloud parameterizations. All the PDF-based parameterizations are found to be inaccurate for high cloud simulations, in either the magnitude or the structure. The primary reason is that the investigated PDFs are symmetrically assumed, yet the skewness factors in deep convective cloud regimes are highly significant, indicating the symmetrical assumption is not well satisfied in those regimes. Results imply the need to seek a skewed PDF in statistical schemes so that it can yield better performance in high cloud simulations.

Impact of eddies on ocean diapycnal mixing in Gulf Stream region

Based on high-resolution,Array for Real-time Geostrophic Oceanography(Argo)profiles and Sea Level Anomaly(SLA)data,this study statistically analyzes and compares turbulent diapycnal mixing profiles inside and outside mesoscale eddies in the Gulf Stream region.The result indicates that average diapycnal diffusivity at 300–540 m depths in anticyclonic eddies reaches4.0×10-5 m2 s-1.This is significantly higher than the 1.6×10-5 m2 s-1 outside eddies and 0.8×10-5 m2 s-1 in cyclonic eddies.Probabilities of diapycnal diffusivity greater than 10-4 m2 s-1 within anticyclonic and cyclonic eddies and outside eddies are29%,5%and 12%,respectively.However,magnitudes of average diapycnal diffusivity at 540–900 m depths in these three cases are of the same order,10-5 m2 s-1.Twenty-four of a total 38 anticyclonic eddies had enhanced mixing in the ocean interior,and 22 were observed during or shortly after strong winds.The coincidence between enhanced mixing and strong wind stress indicates that more wind-induced,near-inertial wave energy propagates downward in anticyclonic eddies.The deeper part of 12 profiles(below 540 m)in anticyclonic eddies had vertical overturns with Thorpe scale exceeding 5 m,among which three profiles had overturns reaching 20 m.Enhanced mixing may have occurred in deep layers of some profiles,although it was not evident in average conditions.

Chemical deception among ant social parasites

Deception is widespread throughout the animal kingdom and various deceptive strategies are exemplified by social parasites. These are species of ants, bees and wasps that have evolved to invade, survive and reproduce within a host colony of another social species. This is achieved principally by chemical deception that tricks the host workers into treating the invading parasite as their own kin. Achieving levels of acceptance into typically hostile host colonies requires an amazing level of decep- tion as social insects have evolved complex species- and colony-specific recognition systems. This allows the detection of for- eigners, both hetero- and con-specific. Therefore, social parasitic ants not only have to overcome the unique species recognition profiles that each ant species produces, but also the subtle variations in theses profiles which generate the colony-specific profiles We present data on the level of chemical similarity between social parasites and their hosts in four different systems and then discuss these data in the wider context with previous studies, especially in respect to using multivariate statistical methods when looking for differences in these systems.