Subjects: Statistics >> Social Statistics submitted time 2024-03-27 Cooperative journals: 《中国科学院院刊》
Abstract： As an important carbon emitter, China faces the stress of carbon peaking and carbon neutrality goals and international carbon reduction duty. The accurate data of carbon emissions are important to evaluate the carbon peaking and carbon neutrality goals and fulfill the international duty of carbon reduction. The Intergovernmental Panel on Climate Change (IPCC) report recommends the combination of top-down atmospheric CO2 observation with atmospheric inversion to verify the bottom-up inventory of carbon emissions, and the atmospheric 14CO2 observation can make the verification more accurate. Radiocarbon (14C) is the most precise tracer of fossil fuel CO2 and is widely recommended by the international community to evaluate the carbon emissions. Based on the international developing trends and the situation in China for atmospheric 14CO2 observation, this study suggests to establish the atmospheric 14CO2 observation network as soon as possible, with more supporting; to conduct training to unify the standard, and to participate in international exchanges; and to combine the 14CO2 observation with atmospheric inversion to obtain the carbon emissions. The purpose of the 14CO2 observation is to make the research level of Chinese carbon emissions in line with the international standards, to improve the reliability of carbon emission data in China, and then to serve the carbon peaking and carbon neutrality goals and climate diplomacy negotiations.
Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》
Abstract：本文介绍了电视节目音频响度的定义与行业标准要求,针对我国电视节目响度目前尚存的争议进行了具体分析,并构思了一种可实现的电视节目响度监测系统设计。
Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2023-07-03 Cooperative journals: 《中国全科医学》
Abstract： Background Understanding the real experiences of elderly patients with chronic diseases during hospital#2;to-home transition and their expectations of care services can help promote the quality improvement of care services during the transition. In recent years，qualitative studies on real experiences of elderly patients with chronic diseases during the hospital-to#2;home transition and their experience of care services have gradually increased，however，the results of single qualitative study may not be generalizable and representative. Objective To systematically evaluate qualitative studies on the real experiences of elderly patients with chronic diseases during the hospital-to-home transition and their experience of care services. Methods In May 2022，PubMed，Web of Science Core Collection，EmBase，CINAHL，CNKI，and Wanfang Data Knowledge Service Platform were searched for the qualitative studies on the real experiences of elderly patients with chronic diseases during hospital#2;to-home transition and their experience of care services from inception to May 2022. Two researchers separately screened the literature and extracted data，evaluated the quality of included studies according to the Critical Appraisal Skills Programme（CASP）developed by evidence-based medicine center of University of Oxford. Meta synthesis was applied to integrate the results of the studies. Results A total of 13 studies were included with 45 research results extracted，and 3 synthesized findings were integrated from 8 categories grouped by similar findings，including barriers to care services during hospital-to-home transition for elderly patients with chronic diseases；facilitators of care services during hospital-to-home transition for elderly patients with chronic diseases；expectations of elderly patients with chronic diseases for care services during hospital-to-home transition. Conclusion Hospital-to-home transition of elderly patients with chronic diseases is a challenging process，and there is still much room for improvement in the quality of care services during the transition. Families，communities，medical institutions，government，and society should actively improve the transition conditions for elderly patients at the individual，community，and social levels. The safe hospital-to-home transition of elderly patients with chronic diseases can be promoted by enhancing education for patients during transition，improving self-management abilities of patients，and providing nurse-led care services during transition.
Subjects: Geosciences >> Geography submitted time 2023-04-07 Cooperative journals: 《干旱区地理》
Abstract： Habitat quality is an important basis for human well-being and regional sustainable development and has important practical significance for protecting regional biodiversity, improving regional ecosystem services, and building regional ecological security patterns. Based on the three-phase land use raster data from 2000, 2010, and 2020, this study comprehensively applied the InVEST model, topographic position index, distribution index, geographic detector, and spatial statistical analysis methods to analyze the spatiotemporal evolution characteristics and spatial distribution of habitat quality in the Weihe River Basin in China. The pattern and its topographic gradient effects and influencing factors were comprehensively analyzed. The results are as follows: (1) From 2000 to 2020, the habitat quality index of the Weihe River Basin exhibited a yearly increasing trend. The habitat quality index increased from 0.607 to 0.624, and the growth rate was 2.463%. It showed a polarized distribution pattern in space. The area of low habitat quality and high habitat quality continued to increase, whereas the area of medium and good habitat quality decreased. (2) The spatial distribution pattern of habitat quality in the Weihe River Basin was significantly affected by topographic factors, with a significant topographic gradient effect. It is extensively distributed on the topographic gradient, and its distribution index is the highest, whereas high habitat quality occupies a dominant position on the high topographic gradient. (3) From the perspective of different influencing factors, the land use type is the main reason for the spatial differentiation pattern of habitat quality in the Weihe River Basin. Influencing factors and the interaction of any two factors on the spatial differentiation of habitat quality have a greater impact than the independent effect of a single driving factor. Among them, the interactive determinants of land use type and natural factors such as rainfall, temperature, altitude, and normalized vegetation index are >0.6. The research results can provide scientific theoretical and decision support for the sustainable development of the Weihe River Basin, as well as ecological protection and high-quality development.
Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-31 Cooperative journals: 《腐蚀科学与防护技术》
Abstract： Microbiologically influenced corrosion (MIC) is an important corrosion form in marine environment. The development of novel technology for MIC inhibitionis of great significance for the utilization of marine source. In this research, a three-step procedure, including electrochemical etching, surface modification, and infusion of lubricant, was utilized to fabricate slippery liquid-infused porous surface (SLIPS) over Al. The effect of SLIPS on the adherence of sulfate reducing bacteria (SRB) and the SRB induced corrosion was studied. It was found that the SLIPS can inhibit the SRB adherence for the liquid- like property of SLIPS, which hardly provides anchors for the SRB adherence. Furthermore, the lubricant layer existed over aluminum substrate can inhibit the penetration of corrosive medium, and thus provide an effective barrier between corrosive medium and Al-substrate. The as- fabricated SLIPS can maintain high stability in both static and dynamic seawater with SRB. This research will provide a sound reference for developing a novel method for MIC protection.
Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-31 Cooperative journals: 《材料研究学报》
Abstract： A solution for electro-spinning of fibers was prepared via non-hydrolytic sol-gel method with ethanol and dimethyl formamide (DMF) as solvent, MgCl2 and AlCl3 as raw material and polyvinylpyrrolidone (PVP) as additive. With the above solution, precursor fibers of magnesia- alumina spinel were prepared by electrospinning technology, which then were calcined at 900℃ to finally produce fibers of magnesia-alumina spinel. The effect of gelation temperature, the content of gel and PVP on the phase composition and microstructure of magnesia-alumina spinel fibers was studied by XRD, FTIR, SEM and TEM. The result shows that magnesia-alumina spinel fibers could be produced with the fiber precursor prepared with the fresh solution which was not subjected to sol-gel treatment, but such fibers were crosslinked seriously and on which there existed significant amount of moniliform particles; For those made of the fiber precursor prepared with the solution after gelation at 120℃, such fibers were apt to fracture and the diameter of which increased with the increasing dosage of gel and PVP; For those made of the fiber precursor prepared with the solution after gelation at 100℃ with a dosage of 0.068 mol/L gel and 0.045 g/mL PVP, the fibers were smooth, continuous and homogeneous with an average diameter 121 nm, and furthermore, these fibers still showed good a morphology even after calcined at 1600℃.
Subjects: Geosciences >> Geography submitted time 2023-03-28 Cooperative journals: 《干旱区研究》
Abstract： This study used the Lhasa River Basin, which is a typical plateau basin to clarify the spatiotemporal characteristics of land use change and its impact on a plateau basin habitat quality. The google earth engine (GEE) platform and random forest classification algorithm were used to interpret the land use information of the Lhasa River Basin from 1990 to 2020, and to analyze the spatiotemporal dynamic changes of land use in the past 30 years. The InVEST model was integrated to evaluate the habitat quality of the basin, and to explore the characteristics of its habitat quality changes. The results showed that the efficiency and accuracy of land use classification improved by selecting the vegetation growing season, supplementing and replacing missing data with images obtained in the previous and following years, and generating annual composite cloud free images for land use classification in the alpine and high- altitude areas. An optimal RF classification model combining the spectral, textural, and topographical features of Landsat images was established to classify land use information in the plateau basin. The observed OA, Kappa coefficient, and the F1- score were 88.16% , 0.84, and 0.70, respectively. Since the 1990, the features of the land use change in the Lhasa River Basin have been characterized by “five increases and three decreases,” with an increase being observed in the areas under grassland, construction, forest land, wetland, and water, while the areas under cultivated land, glaciers, and permanent snow or unused land having a decrease. Among them, the growth rate of construction land had the largest increase of 288.35% , while the largest decrease was detected in cultivated land with 50.18% , which could mainly be attributed to overpopulation in the urban areas. Most significant decrease occurred in the unused land area, and the changed area was mainly converted with grassland. During the study period, high quality habitats were mainly distributed in the downstream areas, southwest, and the main source areas of the basin, included the grassland, water, glaciers, permanent snow, and wetland. Poor qualities of habitats were observed in the Lhasa municipal district, Dazi District, Linzhou County, Qushui County, and Mozhugongka County, as well as in the unutilized land in the middle and upper reaches of the basin. The overall habitat quality of the watershed showed an alternating transition pattern of initial decrease, then increase, followed by a decrease, and a slowed down transition, while the habitat quality index increased from 0.53 to 0.57. Population growth and rapid urbanization accelerated the expansion of urban areas and the reduction of arable land, while climate change and ecological engineering played a positive role in improving the quality of habitat in Lhasa River Basin. This study provides a scientific basis and reference for formulating ecological restoration strategies, sustainable land use, and habitat quality improvement in a plateau area.
Subjects: Psychology >> Social Psychology submitted time 2023-03-27 Cooperative journals: 《心理学报》
Abstract： Previous studies on self-other welfare tradeoff focus more on the gain situations than the loss situations. Numerous studies have explored the influence of social distance on the tradeoff but ignored the complex interactions among gain and loss situations, others’ reference points, and psychological distance. This study investigated the influences of others’ reference points and psychological distance on self-other welfare tradeoff in gain and loss situations by using welfare tradeoff rate (WTR) as an index of altruistic degree in self-other welfare tradeoff. In Experiment 1, the effect of WTR on the gain and loss situations and its mechanism were explored. In Experiment 2, others’ reference points were added as another factor to examine their influence on WTR and interaction with the gain and loss situations. In Experiment 3, the psychological distance variable was further introduced to investigate its influence on WTR and interaction with the gain and loss situations and others’ reference points. Results of Experiment 1 showed no significant difference in WTR between gain and loss situations. In Experiment 2, WTR in the gain situation was found to be significantly higher than that in the loss situation, and WTR was reduced when others approached the bottom line, goal, and status quo. Further analyses showed that the WTR under the gain situation was significantly higher than that under the loss situation when others approached the bottom line. Meanwhile, no significant difference was observed in the WTR under the gain and loss situations when others approached the status quo and goal. In Experiment 3, the WTR of close psychological distance was found to be higher than that of far psychological distance, and the main effect of gain and loss situations disappeared. Psychological distance had complex interaction effects with gain and loss situations and others’ reference points. These findings contribute to a deep understanding of the asymmetric effects of gain and loss situations, tri-reference-point theory, and related findings from studies on social discounting and self-other decision- making differences. They also have certain practical implications for individuals, organizations, and countries in understanding and dealing with the relationships between ones’ selves and others.
Subjects: Nursing >> Nursing submitted time 2022-08-17
Abstract： Objective To investigate the sleep status of patients with type 2 diabetes and analyze the influencing factors. Methods This study is a cross-sectional study using convenience sampling method and questionnaire-based survey. The Pittsburgh Sleep Quality Index Scale (PSQI) was used to assess the sleep status of patients. Results Totally 223 patients were recruited in this study. The patient''s PSQI score ranged from 0 to 16, with an average score of (4.00�3.10). Totally 173 (77.58%) patients had good sleep quality, 39 (17.49%) had average sleep quality, 10 (4.48%) had poor sleep quality, and 1 (0.45%) had very poor sleep quality. Univariate analysis showed that the patients'' PSQI scores were higher in female patients, aged 45 years old or older, with education level of senior high school /technical secondary school or below, non-employed patients, with family monthly per-capita income 5000 RMB or less, and those who had symptoms of hypoglycemia (P<0.05). Multivariate logistic regression analysis showed that low education level (P=0.007) and occurrence of hypoglycemia (P=0.016) were independent influencing factors for patients with sleep disorders. Conclusion Patients with type 2 diabetes had a higher proportion of sleep disturbances. Patients with education level of senior high school or technical secondary school education and below, and who have had hypoglycemia are more likely to have sleep disorders.
Peer Review Status:
Awaiting Review
Subjects: Psychology >> Other Disciplines of Psychology submitted time 2019-09-22
Abstract： Death awareness refers to thinking about and the recognition of the inevitability of personal death. As a critical component of the human-unique ability of autonoetic consciousness, death awareness can be viewed as a cognitive adaptation for time management. We hypothesize that activating death awareness may affect intertemporal choice, in which people make tradeoffs between rewards across different time points. Such effects of death awareness on intertemporal choice may be mediated by time perception, a subjective assessment of the speed of time passage. In this research, we investigate the impact of death awareness on time perception and intertemporal choice, and the relationships among them. Study 1 examined the relationship between death awareness and time estimation. Eighty-three college students were randomly assigned to either a death awareness activation group where mortality was made salient to the participants or a control group where the participants imagined their toothache experience. After a word-search distraction task, the participants in both groups completed a time-passage (400ms, 800ms, 1200ms, 1600ms) estimation task. The results showed that the participants in the group of death awareness activation gave significantly shorter estimates than the participants in the control group. Study 2 (n = 123) extended the measure of time perception to a more extended period and also measured the delay discounting rate of the participants from their intertemporal choices between a smaller-and-sooner reward and a larger-and-later reward. The participants were randomly assigned to either a death awareness activation group or a toothache awareness activation group. The participants then indicated how long ten years was to them by marking on a line with the statement “10 years is very short” on the left end side of the line and the statement “10 years is very long” on the right end side. The participants in the death-awareness activation group marked the line closer to the left end (“life is short”) than those in the control group. As predicted, the participants in the death-awareness activation group had a lower delay discounting rate and were more future-oriented in making intertemporal choices. Moreover, bootstrapping analysis revealed a partial mediation effect of time-passage estimation between death awareness and delay discounting. In conclusion, death awareness serves adaptive functions in time management. Activating death awareness makes people feel that time passes more quickly and promotes future-oriented decisions.
Subjects: Environmental Sciences, Resource Sciences >> Basic Disciplines of Environmental Science and Technology submitted time 2019-03-07 Cooperative journals: 《干旱区地理》
Abstract： 以海原县为研究对象，以2000、2005、2010和2015年遥感数据为基础数据，综合运用土地利用动态度、生态系统服务价值评价模型、地理探测器等模型对海原县2000—2015年的生态系统服务价值时空变化进行研究。结果显示：2000—2015年海原县土地利用类型发生明显变化，林地、建设用地、水域以及园地面积分别增加24 532.56hm2、13 233.71hm2、1 093.58hm2和812.16hm2，而耕地、草地和未利用地面积呈下降趋势，其中未利用面积下降幅度最大，共减少21 333.05hm2；研究期间海原县生态系统服务价值呈现出逐年增加的变化趋势，由2000年的37.25×108元增加至2015年的62.23×108元，变化率为67.07%，而林地、园地和水域面积的增加是海原县生态系统服务价值增加的关键；从态系统服务价值空间分布来看，海原县生态系统服务价值在空间呈现出由西南向东北递减的变化趋势；研究期间研究区生态系统单项服务价值均呈现出增加的变化趋势，其中废物处理和水源涵养增加量最大，其次是生物多样性和气候调节，而食物生产、原材料生产以及娱乐文化增加量最低，说明海原县的生态系统调节服务>支持服务>供给服务>文化服务；通过地理探测器诊断发现草地、园地、林地、气候调节、土壤形成与保护、生物多样性保护的决定力q值均＞0.8，说明这6项因子对研究区生态系统服务价值变化具有重要的影响作用。
Subjects: Biology >> Zoology submitted time 2018-12-24 Cooperative journals: 《动物营养学报》
Abstract：辣木是一种有特种经济价值的热带落叶乔木，具有产量高、适应性广、栽培简便、抗逆性强的优势，而且辣木营养价值高，叶片干物质中粗蛋白质含量高达27%，氨基酸组成合理，含有丰富的维生素、矿物元素和不饱和脂肪酸，是一种不可多得的饲料资源。为此，本文就辣木的生物学特性和营养水平进行介绍，并综述其作为饲料资源对动物生长发育、产品品质的影响，以及在动物养殖上的保健作用，旨在为辣木作为新型饲料资源的推广与应用提供参考。
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-10-11 Cooperative journals: 《计算机应用研究》
Abstract： Traditional personalized recommendation algorithm generally suffers from the problem of data sparseness, which affects the accuracy of recommendation. The Slope one algorithm is simple and efficient, but the algorithm is only based on the user - project score matrix to analyze the data, ignoring the type characteristics of the project and the user's preference for the type of the project. In order to solve the above problems, the LR-Slope one algorithm is proposed. Firstly, the user's preference matrix is constructed based on user project score matrix and project type information. Secondly, the weight of each type is calculated by linear regression model and optimized by random gradient descending algorithm. Finally, the score is predicted combined by Slope one, and the scoring matrix is filled, which improves the quality of recommendation. Experimental results show that the proposed algorithm improves the accuracy of recommendation and alleviates data sparseness effectively.
Subjects: Biology >> Bioengineering submitted time 2017-09-20
Abstract： Vitamin K2 (VK2) is a series of menaquinone compounds with isoprene side chains, which are represented by MK-n depending on the length of the side chains. Highly active VK2 is mainly synthesized by microorganisms and has the physiological function of preventing and treating diseases such as osteoporosis, hemorrhage, liver cirrhosis and Parkinson's disease. Flavobacterium is an important production strain and can synthesize a variety of VK2 homologs including MK4, MK5 and MK6. We found that by regulating the fermentation temperature, the type and yield of VK2 homologs synthesized by Flavobacterium can be controlled. In the range of 20~37℃, Flavobacterium sp. M1-14 grows best at 25℃, the biomass reaches 8.8 g/L, but the fermentation product is completely MK6, the yield is 13.9 mg/L, and the unit cell yield is 1.6 mg/L g. When the fermentation temperature is higher than 30°C, Flavobacterium can synthesize MK4, MK5 and MK6 at the same time. At 37°C, the yields of MK4 and MK5 are the highest, which are 1.6 mg/L and 1.7 mg/L, respectively, and the total amount of VK2 is 12.5 mg/L. At this time, the biomass was only 5.5g/L, and the unit cell yield was 2.3mg/g. In view of the difference in the optimum temperature for the growth of Flavobacterium cells and the synthesis of VK2 homologs, variable temperature fermentation was considered to increase biomass and VK2 production. After optimization of multiple factors, we developed a two-stage temperature change strategy with low temperature first and then high temperature, that is, fermentation at 25°C for 48 hours, and then fermented at 37°C for 96 hours, the VK2 yield reached 20.9 mg/L (among which MK4 was 2.1 mg). /L, MK5 is 2.3 mg/L, MK6 is 16.5 mg/L), the biomass is 8.8 g/L, and the unit cell yield is 2.4 mg/g. Then, on the 30L fermenter, we investigated the oxygen demand of fermentation at different temperatures by controlling the ventilation rate and rotation speed. It was found that at 25℃ and 37℃, the optimum kLa for VK2 synthesis by Flavobacterium fermentation was 360 h-1 and 60 h-1, respectively. A two-stage variable kLa control strategy was developed for the changes in the oxygen demand of bacteria during variable temperature fermentation. After optimization, the kLa was 360 h-1 in the first 24 hours of variable temperature fermentation, and the kLa was 60 h-1 in the next 120 hours. was 22.5 mg/L), which was 107% higher than the initial value, the biomass was 15.5 g/L, and the unit cell yield was 1.9 mg/g. The staged fermentation regulation strategy of changing temperature and kLa can change the type of homologues of Flavobacterium synthesizing VK2, significantly increase the production of VK2, and lay an optimized foundation for realizing the industrialization of VK2 bioproduction.
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. submitted time 2017-09-20
Abstract：维生素K2（VK2）是一类脂溶性甲萘醌类化合物，根据其侧链中异戊烯基单元个数的不同，可用Menaquinone-n (MK-n, n=1~14) 表示。研究表明，VK2具有促凝血、预防及治疗骨质疏松症、帕金森症及心血管疾病等生理功能。利用微生物发酵生产的VK2具有全反式侧链、生物相容性高等优势，作为食品和药品更易于被消费者接受。但是，其下游分离纯化过程中存在产物浓度低、成分复杂、纯化工艺繁琐、产品得率低等诸多问题，目前还鲜有高纯度VK2制备工艺的报道。 黄杆菌可以合成MK-5和MK-6等VK2同系物，本研究针对其发酵产物的特点，开发了一整套相应的分离纯化工艺。首先通过膜浓缩和离心的方法快速获得黄杆菌菌体，菌体经干燥后，采用甲醇进行固-液萃取，固-液比为4:1（ml/g），萃取时间为20分钟，连续萃取3次，获得的VK2甲醇萃取液的萃取得率可达99.1%以上。然后，通过大孔树脂吸附层析,以甲醇/二氯甲烷=1/1（V/V）为洗脱液，可获得纯度约为15%的VK2粗品；再经过分子筛层析，在高径比为255:15，二氯甲烷为流动相时，可获得纯度约为57%的VK2低纯度产品；之后，经过反相硅胶柱层析，分别以甲醇/二氯甲烷=9:1,6:1,3:1（V/V）依次进行梯度洗脱，即可分离并纯化各VK2的同系物，其HPLC纯度均达90%以上。最后采用冷却结晶的方法制得一系列淡黄色晶体。通过质谱、红外光谱及核磁共振氢谱检测，均符合相应的VK2光谱特征，确定其为MK-5和MK-6晶体。经HPLC检测，MK-5和MK-6晶体纯度分别达到98.0%和99.3%。经多次重复实验后，表明全套工艺稳定，产物回收率可以达到88%以上。各填料经过15次重复利用后，其对VK2的纯度及回收率无明显的影响。 本研究所建立的从黄杆菌发酵液中提取和纯化VK2的方法具有工艺简单、处理能力大、产品纯度及得率高等优点，其为实现VK2的生物制备及其产业化奠定了优化的基础。在整个的提取、纯化及结晶的过程中，只有两种有机溶剂被使用，这更有利于有机溶剂的回收利用和VK2的规模化生产。
Subjects: Biology >> Ecology submitted time 2017-03-22 Cooperative journals: 《生态学报》
Abstract：采用高通量测序技术分析了鄱阳湖典型湿地土壤细菌群落特征。测序结果表明，不同植被土壤细菌群落丰度与多样性的排序相同：苔草带 > 苔草-虉草带 > 芦苇带 > 泥滩带 > 藜蒿带。沿湖面至坡地，空间位置相近的土壤细菌群落结构具有更大的相似性，苔草-虉草带、苔草带和芦苇带的细菌群落结构相近，泥滩带和藜蒿带的细菌群落结构差异较大。变形菌门（30.0%）是湿地土壤平均相对丰度最高的门，其次为酸杆菌门（16.7%）和绿弯菌门（16.5%）；多数门分类细菌相对丰度沿湖面至坡地存在一定变化趋势。硝化螺菌属是第一大属分类水平细菌群落。在土壤化学指标中，与鄱阳湖湿地细菌群落相关性较大的是总磷、铵态氮和有机质含量。以上研究结果表明，鄱阳湖湿地不同植被土壤细菌群落具有结构性差异，但沿湖面至坡地存在规律性变化。
Subjects: Computer Science >> Information Security submitted time 2017-03-10
Abstract：随着信息技术的飞速发展，信息安全问题越来越得到全社会的重视。其中网络内容安全是最突出的问题之一，而作为网络内容安全处理核心技术的网络数据流过滤技术也面临着新的挑战。本文从网络数据流过滤问题出发，研究利用多通道信息进行网络数据流分类的技术，包括以下三方面的工作：（1）多通道 网络流分类模型研究，提出了可融合网络结构信息和网络内容信息的流分类模型；（2）分类模型索引技术 研究，提出一种基于 R-Tree 分类模型索引结构，极大地提高了网络数据流的判别速度；（3）多通道网络流 过滤系统 F9 实验平台建设，该系统支持多通道网络流判别过滤，可作为新模型与算法的实验平台。以上三 方面的工作从模型构造，模型索引，和模型实现三方面系统研究了面向信息过滤的多通道网络流分类系统。
Peer Review Status:Awaiting Review
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