园林种植工程的施工组织设计浅议

在实际的园林绿化工程活动中，施工组织设计不是可有可无的装饰品，而是任何一项工程施工都必不可少的程序，文章根据园林种植工程的特点，简述了种植工程施工组织的重要性、其质的衡量标准以及具体内容。     

CAWR: Buffer Replacement with Channel‐Aware Write Reordering Mechanism for SSDs

A typical solid‐state drive contains several independent channels that can be operated in parallel. To exploit this channel‐level parallelism, a variety of works proposed to split consecutive write sequences into small segments and schedule them to different channels. This scheme exploits the parallelism but breaks the spatial locality of write traffic; thus, it is able to significantly degrade the efficiency of garbage collection. This paper proposes a channel‐aware write reordering (CAWR) mechanism to schedule write requests to different channels more intelligently. The novel mechanism encapsulates correlated pages into a cluster beforehand. All pages belonging to a cluster are scheduled to the same channels to exploit spatial locality, while different clusters are scheduled to different channels to exploit the parallelism. As CAWR covers both garbage collection and I/O performance, it outperforms existing schemes significantly. Trace‐driven simulation results demonstrate that the CAWR mechanism reduces the average response time by 26% on average and decreases the valid page copies by 10% on average, while achieving a similar hit ratio to that of existing mechanisms.     

Automatic recommendation to appropriate log levels

A log statement is one of the key tactics for a developer to record and monitor important run-time behaviors of our system in a development phase and a maintenance phase. It composes of a message for stating log contents, and a log level (eg, debug or warn) to denote the severity of a message and controlling its visibility at run time. In spite of its usefulness, a developer does not tend to deeply consider which log level is appropriate in writing source code, which causes the system to be unmaintainable. To address this issue, this paper proposes an automatic approach to validating the appropriateness of the log level in consideration of the semantic and syntactic features and recommending a proper alternative log level. We first build the semantic feature vector to quantify the semantic similarity among application log messages using the word vector space, and the syntactic feature vector to capture the application context that surrounds the log statement. Based on the feature vectors and machine learning techniques, the log level is automatically validated, and an alternative log level is recommended if the log level is invalid. For the evaluation, we collected 22 open-source projects from three application domains, and obtained the 77% of precision and 75% of recall in validating the log levels. Also, our approach showed 6% higher accuracy than that of the developer group who has 7 to 8 years of work experience, and 72% of the developers accepted our recommendation.     

Adaptive network-traffic balancing on multi-core software networking devices

Software networking devices running on commercial-off-the-shelf hardware offer more flexibility and less performance than high-end, dedicated, networking devices. However, this lack of performance can be compensated, to some extent, by multi-core processors that can manage network packets in parallel. In order to efficiently utilize multi-core architectures, the processing load and the network traffic must be properly balanced to optimize the inter-core communication. Here, we analyze the traffic distribution on a per-packet and per-flow basis and verify the performance of the Linux Bridge networking device. A new, adaptive, traffic-distribution method is proposed, which combines packet-based and flow-based traffic distributions. The method was experimentally validated by two test cases – the “worst-case” scenario, with one dominant flow, and the “backbone-link” scenario, with a large number of flows that have a similar packet rate. In the case of one dominant flow, the performance in traffic throughput is improved by a factor of 2.8 by engaging four processing cores. In the case of a large number of traffic flows, the performance remains similar to the existing flow-based methods.     

数控车床加工椭圆的方法

数控车床加工椭圆常用的宏程序有条件语句和循环语句,坐标系设定方法也有直角坐标和极坐标2种。在此以数控系统FAUNC 0i Mate为例,介绍用条件语句直角坐标编程方法和循环语句极坐标编程方法加工椭圆。     

Oracle数据库维护中自动跟踪技术的应用分析

主要分析动跟踪技术在Oracle数据库维护中的应用。将自动跟踪技术应用至Oracle数据后台跟踪和SQL语句跟踪中,根据数据库信息和相关参数做全面解析。自动跟踪技术有助于数据库管理员优化日常维护工作流程和数据库性能,扩大用户使用范围。     

专利法第33条在专利申请及审查中的重要性

专利审查部门与实务界针对《专利法》第33条规定的“修改不得超范围”原则一直存在较多分歧与争论,并且上述分歧及矛盾在某种程度上并未得到有效解决.从专利审查员的审查意见及申请人的意见陈述两个层面出发,对若干实际案例做出具体分析,目的在于表明上述分歧及矛盾并非不可调和,双方可通过在审查意见及意见陈述中合理运用专利法第33条以使申请人的利益得到切实维护.     

Graph-based Lexicalized Reordering Models for Statistical Machine Translation

Lexicalized reordering models are very important components of phrasebased translation systems.By examining the reordering relationships between adjacent phrases,conventional methods learn these models from the word aligned bilingual corpus,while ignoring the effect of the number of adjacent bilingual phrases.In this paper,we propose a method to take the number of adjacent phrases into account for better estimation of reordering models.Instead of just checking whether there is one phrase adjacent to a given phrase,our method firstly uses a compact structure named reordering graph to represent all phrase segmentations of a parallel sentence,then the effect of the adjacent phrase number can be quantified in a forward-backward fashion,and finally incorporated into the estimation of reordering models.Experimental results on the NIST Chinese-English and WMT French-Spanish data sets show that our approach significantly outperforms the baseline method.     

企业现金流量表及附注编制对应关系的探讨

在编制现金流量表及其附注时,有些企业容易忽略了4个对应关系,从而使现金流表项目所反映的内容与附注的调整事项产生差异。笔者对4个对应关系分别进行分析和探讨,期望引起足够的重视。     

浅析医院建筑设计和建设的影响因素

本文是笔者在2010年参与某人民医院(二级甲等)异地新建项目设计过程中的切身体会(方案深化、初设及施工图设计)和所思所想,如有不妥之处,欢迎同行批评指正。