从历年命案积案现场指纹查询比对分析小议现场指纹提取与指纹正查的工作机制

通过对近期云南省公安厅组织开展的历年采集存储命案积案现场指纹攻坚查询比对工作结果的分析,可知,案件侦查与指纹查询比对的联动不足、提升现场指纹提取的主观能动性不强、入库现场指纹质量不高、发现、提取现场指纹的技术局限。对策:建立、规范刑事技术与情报信息联动工作机制,强化现场指纹信息采集意识,加强对入库现场指纹质量的管理,强化装备保障及人员保障工作。

论沈钦韩《苏诗查注补正》的考据价值

乾嘉时期的学者沈钦韩善于补注经、史,尤重于地理、职官典制、史事的考据,他的这一学术特点亦贯穿于诗歌注释中。《苏诗查注补正》作为沈的代表作,对苏诗查慎行注的地理、职官典制、史事等方面进行了严谨缜密的考据,纠正、补充了查慎行及前代其余苏诗注家的大量错误和疏漏,形成了"以考据注诗"的特点,在苏轼研究史与清代诗歌注释史上占有重要地位。

论沈钦韩的“以考证注诗”方法——以《苏诗查注补正》为例

乾嘉学者沈钦韩以经史考证见长,兼具诗文创作的才能。他综合两方面的长处,以严谨的治学态度与精深的考证功力从事诗歌注释,形成了"以考证注诗"的方法。在《苏诗查注补正》中,沈钦韩针对宋代苏诗的类注本、施顾注本、清代邵长蘅的补施本、查慎行注本的错误作了详尽精细的补正:首先针对性苏诗所用的古典作了补注。其次,沈钦韩拓展了宋代以来诗歌注释中的"以史证诗"方法的内涵,将"证"的重点从"印证"转移到"考证"上来,从而将"以史证诗"方法上升为"以考证注诗"的方法,对苏诗诗题与诗句中涉及的人物、时事等史实作了严密的考证,尤其将重点放在职官典制、地理方面,从而对苏诗的句意、篇意作了完整可靠的补充。

基于关系数据库的复合型BOM的设计与实现

物料清单(BOM)作为ERP(enterprise resource planning)系统的重要的基础数据,其存储模型的好坏直接影响到分解效率。分析了在关系型数据库中BOM存储的2种基本的存储模型并设计实现了一种复合型BOM存储结构。在此基础上,给出了常用的正查与反查算法以及订单分解算法。实践证明该存储结构和算法能很好地满足实际应用。

Condition survey and analysis of epoxy asphalt concrete pavement on Second Nanjing Yangtze River Bridge:a ten-year review

To obtain a complete picture of the epoxy asphalt pavement condition on the Second Nanjing Yangtze River Bridge, an on-site survey is conducted to collect information regarding traffic composition and extents of pavement distresses. The survey shows that 30 m2 out of the entire 3.8 × 104 m2 pavement exhibits potholes and alligator cracks. Other surface cracks are also found, including regular longitudinal cracks, short hairline cracks, bubble cracks, and ring cracks. Rutting and shoving are not observed on the pavement. The causes of pavement distresses are discussed by analyzing the pavement mechanical response with actual traffic composition. Research results indicate that the regular longitudinal cracks occurring at ribs near wheelpaths are due to fatigue damage. Short hair cracking and bubble cracking are mainly related to construction defects. Alligator cracks are the results of the development of regular, short hair and bubble cracks lacking effective maintenance. Potholes are induced by the cracking and moisture ingression.

关于指纹自动识别系统使用过程中的新思考

计算机指纹自动识别系统,是指以指纹自动处理为核心的指纹处理、管理、识别计算机系统,具有存储容量大、比对速度快、效率高、质量好、便于应用等诸多优越性。指纹自动比对系统不仅提高了速度,最主要的是提高了比中率。但系统的使用是离不开人的,其中捺印指纹入库质量、现场指纹入库特征标识准确性、系统的维护等工作都离不开技术人员,各个环节的技术员的综合能力的优劣,及对系统性能的熟悉程度,均直接影响到检索比对的结果。

Robustness of Minimum Norm Quadratic Unbiased Estimator of Variance Under the General Linear Model

Necessary and sufficient conditions for equalities between a 2 y′(I-P Xx)y and minimum norm quadratic unbiased estimator of variance under the general linear model, where a 2 is a known positive number, are derived. Further, when the Gauss? Markov estimators and the ordinary least squares estimator are identical, a relative simply equivalent condition is obtained. At last, this condition is applied to an interesting example.

提高指纹比对时效性的方法

指纹比对工作是刑事技术工作的一个重点。如何高效地利用现场指纹尽快确定犯罪嫌疑人是提高案件侦破率的关键。因此,提高指纹入库比对的时效性就显得格外重要。

Clinical role of (18)~F-fluorodeoxyglucose positron emission tomography/computed tomography in post-operative follow up of gastric cancer: Initial results

AIM: To evaluate the clinical role of 18F-fluorodeo-xyglucose positron emission and computed tomography (18F-FDG PET/CT) in detection of gastric cancer recurrence after initial surgical resection. METHODS: In the period from January 2007 to May 2008, 23 patients who had previous surgical resection of histopathologically diagnosed gastric cancer underwent a total of 25 18F-FDG PET/CT scans as follow-up visits in our center. The standard of reference for tumor recurrence consisted of histopathologic confirmation or clinical follow-up information for at least 5 mo after PET/CT examinations. RESULTS: PET/CT was positive in 14 patients (61%) and negative in 9 (39%). When correlated with final diagnosis, which was confirmed by histopathologic evidence of tumor recurrence in 8 of the 23 patients (35%) and by clinical follow-up in 15 (65%), PET/CT was true positive in 12 patients, false positive in 2, true negative in 8 and false negative in 2. Overall, the accuracy of PET/CT was 82.6%, the negative predictive value (NPV) was 77.7%, and the positive predictive value (PPV) was 85.7%. The 2 false positive PET/CT findings were actually chronic inflammatory tissue lesions. For the two patients with false negativePET/CT, the f inal diagnosis was recurrence of mucinous adenocarcinoma in the anastomosis in one patient and abdominal wall metastasis in the other. Importantly, PET/CT revealed true-positive findings in 11 (47.8%) patients who had negative or no definite findings by CT. PET/CT revealed extra-abdominal metastases in 7 patients and additional esophageal carcinoma in one patient. Clinical treatment decisions were changed in 7 (30.4%) patients after introducing PET/CT into their conventional post-operative follow-up program. CONCLUSION: Whole body 18F-FDG PET/CT was highly effective in discriminating true recurrence in post-operative patients with gastric cancer and had important impacts on clinical decisions in a considerable portion of patients.

Pancreatico-biliary endoscopic ultrasound:A systematic review of the levels of evidence,performance and outcomes

Our aim was to record pancreaticobiliary endoscopic ultrasound(EUS) literature of the past 3 decades and evaluate its role based on a critical appraisal of published studies according to levels of evidence(LE).Original research articles(randomized controlled trials,prospective and retrospective studies),meta-analyses,reviews and surveys pertinent to gastrointestinal EUS were included.All articles published until September 2011 were retrieved from PubMed and classified according to specific disease entities,anatomical subdivisions and therapeutic applications of EUS.The North of England evidencebased guidelines were used to determine LE.A total of 1089 pertinent articles were reviewed.Published research focused primarily on solid pancreatic neoplasms,followed by disorders of the extrahepatic biliary tree,pancreatic cystic lesions,therapeutic-interventional EUS,chronic and acute pancreatitis.A uniform observation in all six categories of articles was the predominance of LE Ⅲ studies followed by LE Ⅳ,Ⅱb,Ⅱa,Ⅰb and Ⅰ a,in descending order.EUS remains the most accurate method for detecting small(< 3 cm) pancreatic tumors,ampullary neoplasms and small(< 4 mm) bile duct stones,and the best test to define vascular invasion in pancreatic and peri-ampullary neoplasms.Detailed EUS imaging,along with biochemical and molecular cyst fluid analysis,improve the differentiation of pancreatic cysts and help predict their malignant potential.Early diagnosis of chronic pancreatitis appears feasible and reliable.Novel imaging techniques(contrast-enhanced EUS,elastography) seem promising for the evaluation of pancreatic cancer and autoimmune pancreatitis.Therapeutic applications currently involve pancreaticobiliary drainage and targeted fine needle injection-guided antitumor therapy.Despite the ongoing development of extra-corporeal imaging modalities,such as computed tomography,magnetic resonance imaging,and positron emission tomography,EUS still holds a leading role in the investigation of the pancreaticobiliary area.The major challenge of EUS evolution is its expanding therapeutic potential towards an effective and minimally invasive management of complex pancreaticobiliary disorders.

Adapting Property Path for Polynomial-Time Evaluation and Reasoning on Semantic Web

Property path is the latest navigational extension of the standard query language SPARQL 1.1 for the Semantic Web.However,in the existing SPARQL query systems which support property path,the query efficiency is very low and does not support reasoning.This paper proposes a new existential semantics which has polynomial-time evaluation complexity and an equivalent relationship with the current semantics,and transforms the property path expressions to the extended nested regular expressions based on the existential semantics and proves the semantic equivalence after the transformation considering the RDFS semantics.The property path query engine is achieved by implementing the nested regular expressions algorithm and the transformation rules from the property path expressions to the nested regular expressions,which maintains the syntax simplicity of property path and the goal-oriented polynomial-time reasoning to avoid computing the RDF graph closure.The experiment results not only show the characteristics of query engine based on the existential semantics in efficiency and reasoning,but also further validate the equivalence between the results based on current semantics and those based on the existential semantics for property path after the removal of duplicate values.

Influence of Climatic Factors on the Recent Spread of Dubas Bug Ommatissus lybicus （Debergevin） on Date Palm Trees in Some Upper Euphrates Regions of AI-Anbar Province

The dubas bug Ommatissus lybicus （Debergevin） （Homoptera： Tropiduchidae） was almost absent in AI-Anbar Province during the past years, however, field survey conducted in different regions of the province during fall of 2007 indicated the presence of heavy infestation by this pest on date palm trees in some orchards toward the east of Hit city. Infestation was highly influencing in term of affected trees and accumulation of honey dew. Scattered infestations were also recorded in some orchards west of Hit city and near the cities of Haditha, Rawa and AI-Kaim near the Syrian border. However, a sharp decline of dubas population was observed during 2008 and subsequent years as a result of the influence of sever winter in 2008 and the continuous occurrence of dust storms which showed a detrimental effect on moving stages of dubas bug. Data showed that nymphs density reached to about 50 individuals/leaflet recorded during the last week of April and early May of 2008 and was reduced to less than 5 nymphs/leaflet by the end of the third week of May of the same year as a result of the indicated climatic factors. Farther samplings conducted in Spring and Fall seasons of 2009 and 2010 indicated that insects were mainly found on offshoots near the ground with a maximum density reached to 12 individuals/tree. Since the spread of the pest occurred in a discontinuous manner with no correlation to infestations in close by provinces indicating that the arrival or transportation of the pest was happened in a way other than the normal distribution, therefore, dubas bug may not persist in date palm orchards in A1- Anbar Province.

Evaluation of Reinforced Concrete Structures with Views for Rehabilitation

The increasing number of pathological occurrences is found in reinforced concrete structures, so does the demand for inspection and maintenance services in residential communities in the state of Pernambuco, which aim to detect damage to the structure in a timely manner to minimize repair costs, thus applying preventive maintenance in order to guarantee the estimated useful life of the project for the building. However, it is observed that the practice of periodic inspections is not yet part of the culture of a certain segment of the population that does not have economic means and knowledge of the importance of maintenance to ensure the integrity of the structure. It was used in this work an inspection script with use of tests and methodology to quantify damage and to check the state of degradation of two residential buildings with more than 20 years and built near the seafront where environmental aggression is strong. The deterioration found in each of the buildings has been differentiated due to different corrective maintenance performed at every building. The last maintenance, performed in Building A, was performed by corrective hand of unskilled labour guided by the community itself, which has no expertise in the field of civil engineering. In Building B, the situation is similar, compounded by the opinion of some tenants that there is no need for this routine, even the structure being in critical condition, as was confirmed with the application of the methodology employ. There should be a legislation that governs the execution of inspections and maintenance programs in addition to the existing technical standards. The methodologies presented suitable for checking the degree of degradation of the structures and performed tests confirmed the diagnosis obtained by visual inspection and quantification of damage.

Tumor budding as a potential histopathological biomarker in colorectal cancer:Hype or hope?

Colorectal cancer （CRC）, the third most commonly di- agnosed type of cancer in men and women worldwide is recognized as a complex multi-pathway disease, an observation sustained by the fact that histologically identical tumors may have different outcome, including various response to therapy. Therefore, particularly in early and intermediate stage （stages Ⅱ and Ⅲ, respec- tively） CRC, there is a compelling need for biomarkers helpful of selecting patients with aggressive disease that might benefit from adjuvant and targeted therapy. Histopathological examination shows that likely other solid tumors the development and progression of hu- man CRC is not only determined by genetically abnor- mal cells, but also by intricate interactions between malignant cells and the surrounding microenvironment. This has led to reconsider the features of tumor mi- croenvironment as potential predictive and prognostic biomarkers. Among the histopathological biomarkers, tumor budding （i.e., the presence of individual cells and small clusters of tumor cells at the tumor invasive front）has received much recent attention, particularly in the setting of CRC. Although its acceptance as a reportable factor has been held back by a lack of uniformity with respect to qualitative and quantitative aspects, tumor budding is now considered as an independent adverse prognostic factor in CRC that may allow for stratifica- tion of patients into risk categories more meaningful than those defined by tumor-node-metastasis staging alone, and also potentially guide treatment decisions, especially in T2-T3 NO （stage Ⅱ） CRCs.

Reflection of the supplemem and correction of the defective evidences

Since the implementation of the rules of the supplement and correction of the defective evidences, there are many problems in the practice. The actual investigations and researches also feedback that the judges also have a lot of problems in the face of the definition of the meaning of the defective evidences, the correction application, and the degree restrictions. Behind this reflects the contradiction between the stress of the prosecution organs in the criminal detection and the deepening of the resisting mechanism in the court. And the litigation structure of the ＂division of responsibilities among three authorities＂ and the trial mode of ＂the centralism of the book records of the cases＂ exacerbated this opposition. On the basis of clarifying the origin and the meanings of the defective evidences, the author of this paper analyzes the essence and its harm of the rule. Through the reflections of the problems existing in the practice, the author further defines the two types of the ＂defects＂ that shall not be allowed to correct.

A Study of College Students＇ Autonomous English Listening Ability

Based on the data got from questionnaire in which 75 college students from Heze University participated, the present study aims to explore the current situation of college students＇ autonomous listening ability, its gender difference and the correlation between autonomous listening ability and CET-4 listening achievement. The results indicate that the autonomous listening ability for college students is at the medium level with a great individual difference and there＇s a vast space to be promoted. Moreover, there＇s no significant gender difference in autonomous listening ability for college students and there＇s significant positive correlation between autonomous listening ability and CET-4 Listening achievement, especially the dimension of Application of Strategies. Thus, a conclusion can be drawn that in English listening teaching, teachers should change their teaching model and strengthen the application of network teaching; in English listening learning, English learners should promote their ability of using strategies in English listening in order to improve their autonomous learning ability.

The strong law for the integral of P-L estimate under left truncation and right censoring

For left truncated and right censored model, letF n be the product-limit estimate and φ a nonnegative measurable function. The almost sure limits of the cumulative hazard function based onF n pd the integral ∫ ?dF n are given. The results are useful in establishing strong consistent results of various estimates. For left truncated data, similar results were obtained in literature.

Combined radial and median nerve injury in diaphysea fracture of humerus： a case report

Radial nerve palsy is the most common neurological involvement in humeral shaft fractures.But combined radial and median nerve injury in a closed diaphyseal fracture of the humerus is rare.Combined injury to both radial and median nerve can cause significant disability.A detailed clinical examination is therefore necessary following humeral shaft fractures.We report a patient with closed diaphyseal humeral fracture （AO 12A-2.3） together with radial and median nerve palsy,its management and review of the literature.As the patient had two nerves involved,surgical exploration was planned.Fracture was reduced and fixed with a 4.5 mm narrow dynamic compression pla te.There was no external injury to both radial and median nerves on surgical exploration.Neurological recovery started at 3 weeks＇ follow-up.Complete recovery was seen at 12 weeks.Careful clinical examination is of the utmost importance in early diagnosis of combined nerve injuries,which allows better management and rehabilitation of the patient.