《说文解字》取资纬书说

《说文解字》对先秦两汉经学的继承,前贤已从收字范围、确立部首、编辑原则、六书理论、释义依据等方面作了阐述,本文则从明用和暗用两方面证明了《说文》对纬书的取资和借鉴:明用指引秘书说二条,暗用则表现为在文字起源、六书理论、释字方法、释义依据、文化思想几个问题上《说文》与纬书的神契。

《金史·舆服志》的史料来源及订误三则

厘清《金史·舆服志》史料来源之间的关系,对于金代舆服研究以及《金史》的校正、释义、补充等方面,均有重要意义。然而,关于这个问题,学界却鲜有涉及。本文选取了今世尚存的相关史籍,和《金史·舆服志》作详细比对,以考察取资的具体情况,并对其取资手法进行分析。在明确这些史料关系的基础上,对《金史·舆服志》中的三则疏误进行了订正。

论荀悦的历史认识论

荀悦在前人的基础上 ,对历史认识的目的、方法、思维方式、检验标准等提出了许多有价值的见解。他阐明以史为鉴的必要性 ,将历史认识与取鉴资治有机结合起来 ;强调认识历史要透过现象看本质 ,通过区分类例 ,由此及彼 ,知微察著 ,去伪存真 ,获得对历史的理性认识 ;指出应以发展变易的观点审视历史 ,不能墨守成规 ,应当因时立制 ,分析事物时应看到其内部相互对立而又相互联系的不同方面 ;要求以儒家思想作为考察历史的理论原则 ,将主观认识与客观事实相参验 ,以真实作为检验历史认识的标准。

资木瓜乙酸乙酯萃取物对RBL-2H3细胞脱颗粒的影响

目的研究资木瓜乙酸乙酯萃取物对不同抗原诱导的RBL-2H3细胞脱颗粒的影响,并初步探讨其作用机制。方法采用MTT法测定不同浓度资木瓜乙酸乙酯萃取物对细胞活性的影响,采用底物法检测不同浓度资木瓜乙酸乙酯萃取物对不同抗原引起的细胞内β-氨基己糖苷酶释放的影响,采用流式细胞分析仪检测不同浓度资木瓜乙酸乙酯萃取物对细胞表面受体FcεRIα表达的影响。结果在一定浓度范围内,对细胞活性没有显著性影响的资木瓜乙酸乙酯萃取物可显著抑制细胞内β-氨基己糖苷酶的释放和降低细胞表面受体FcεRIα的表达,且呈量效关系。结论资木瓜乙酸乙酯萃取物对RBL-2H3细胞脱颗粒具有显著的抑制作用,其作用可能与RBL-2H3细胞表面受体FcεRIα的表达降低有关。

Uplink Grant-Free Pattern Division Multiple Access (GF-PDMA) for 5G Radio Access

Massive machine type communication(m MTC) is one of the key application scenarios for the fifth generation mobile communication(5 G). Grant-free(GF) transmission can reduce the high signaling overhead in m MTC. Non-orthogonal multiple access(NMA) can support more users for m MTC than orthogonal frequency division multiple access(OFDMA). Applying GF transmission in NMA system becomes an active topic recently. The in-depth study on applying GF transmission in pattern division multiple access(PDMA), a competitive candidate scheme of NMA, is investigated in this paper. The definition, latency and allocation of resource and transmission mechanism for GF-PDMA are discussed in detail. The link-level and system-level evaluations are provided to verify the analysis. The analysis and simulation results demonstrate that the proposed GF-PDMA has lower latency than grant based PDMA(GB-PDMA), possesses strong scalability to confront collision and provides almost 2.15 times gain over GF-OFDMA in terms of supporting the number of active users in the system.

论司马光的历史盛衰总结

北宋司马光的编年体通史《资治通鉴》,乃西汉司马迁的纪传体通史《史记》之后,中国古代史学发展的又一座丰碑。司马光总结盛衰以"资治"为目的,"通"为其取鉴资治的特点,这一特点体现在取鉴范围的"贯通"、取鉴思维的"通变"、取鉴价值的"求通"三个方面。司马光总结盛衰的重点,在形形色色的"乱世",总结"乱世"以避免其重演,更能达到"资治"的目的,故对"乱世"形成的原因、对衰败丧亡的教训、对君主行为的过失,着力考察与反思甚多。司马光视治乱兴亡为君主行为所致,历史总结中贯穿探讨"君道"这一核心,强调君主对国家的责任,因为君主之"德"影响天下,君主之"才"关乎兴亡,君主"用人"决定成败。君主应善于发现人才,用人须明察忠奸,做到信赏必罚,不徇私情而至公至明。综观司马光的史学遗产,社会价值与学术价值融为一体,无论对史学研究,还是对治国兴邦,不仅有现实意义,而且有历史意义。

Spatial Data Mining to Support Environmental Management and Decision Making--A Case Study in Brazil

The growth of geo-technologies and the development of methods for spatial data collection have resulted in large spatial data repositories that require techniques for spatial information extraction, in order to transform raw data into useful previously unknown information. However, due to the high complexity of spatial data mining, the need for spatial relationship comprehension and its characteristics, efforts have been directed towards improving algorithms in order to provide an increase of performance and quality of results. Likewise, several issues have been addressed to spatial data mining, including environmental management, which is the focus of this paper. The main original contribution of this work is the demonstration of spatial data mining using a novel algorithm with a multi-relational approach that was applied to a database related to water resource from a certain region of S^o Paulo State, Brazil, and the discussion about obtained results. Some characteristics involving the location of water resources and the profile of who is administering the water exploration were discovered and discussed.

Extraction,Utilization Pattern and Prioritization of Fuel Resources for Conservation in Manali Wildlife Sanctuary,Northwestern Himalaya

Fuelwood is the main source of the energy in mountainous regions.Hence,annual wood consumption is very high.Information on fuelwood resources,and their extraction and availability is very scanty.Therefore,present study was carried out to study the diversity of fuelwood species,annual collection,preference and availability of fuel species in the forests.Thirty four species(25 trees and 9 shrubs) were extracted for fuel by the inhabitants.Total collection and species preference was highest for Picea smithiana,Cedrus deodara,Indigofera heterantha,Pinus wallchiana and Sorbaria tomentosa,respectively.Resource use index indicating use pressure was highest for P.smithiana,C.deodara,I.heterantha and Abies pindrow,respectively.Besides native species,some non-native horticultural and agroforestry species such as Malus pumila,P.domestica,Celtis australis,etc.were also being used as fuel.Preferred species showed their availability in eight forest types whereas,population and regeneration status was poor.Therefore,immediate actions are suggested to sustain current and future demand of fuelwood.The afforestation of degraded,uncultivated and marginal lands through high quality and preferred fuel species might reduce pressure on wild and selective species.

Factors That Influence Local Community Participation in Tourism in Murchison Falls Conservation Area

Community＇s participation is fundamental in understanding the factors that influence their access to and utilization of tourism resources. It is a plausible way of involving local communities in the planning and management of the available resources for their sustainability. This study examined the socio-economic characteristics of the households in Murchison Falls Conservation Area to understand how they influence their participation in tourism and eventually enhance household welfare. Using household survey and key informant interviews, data were collected on demographic and socio-economic characteristics of the respondents and analyzed using Binomial Logit Regression in order to show the factors that influence participation of households in tourism. It was found that the households＇ characteristics significantly influenced their participation. In particular, level of education （r = 0.824）, engagement in farm labor （r = 0.651）, provision of services to the tourists （r = 0.841）, income （r = 0.83） and landholding （r = 0.689） significantly influenced households＇ participation in tourism. On the other hand, age （r = 0.59） and period of residence （r = 0.430） did not significantly influence the households＇ participation in tourism. These results suggest that a clear understanding of the households＇ socio-economic characteristics is a vital step in engaging them meaningfully in tourism activities meant to enhance their livelihoods. Equally important is the need for tourism managers and local government leaders to consider these characteristics when designing policies and strategies to enhance community involvement and management of tourism at a conservation area level.

Extraction of Natural Silk Fibre from Cocoons of Argema mimosae （Lepidoptera： Saturniidae）

In recent years, numerous actions for sustainable exploitation of forest resources have been undertaken, but few deal with commercialization of forest insects. Several tree based insect products, like wild silk, can be linked with forest conservation activities to provide livelihood services of different economic scales to forest dependent people. African wild silkmoth, Argema mimosae Boisduval, is one of the forest insects, a moth in the family of Saturniidae producing wild silk, but there is need for definite procedures for extracting silk fibre from its cocoons. This study evaluated physical characteristics of the A. mimosae cocoons and outlined a procedure to extract viable silk fibre for use in silk industry. Cocoons of the A. mimosae were collected from natural forest of Arabuko-Sokoke, Kenya （3020＇ S, 39055＇ E）, and others obtained by semi-captive rearing of the silkmoth larvae. The cocoons of A mimosae were described to be silvery in colour, tough and thick with distinctive perforations on the surface and a prominent valve-like opening with loose filaments at one end. The study recorded 120 min as the optimum boiling time for the cocoons to yield silvery brown silk floss using sodium carbonate （Na2CO3） as the degumming agent. Cocoons boiled in distilled water could not be deflossed into floss, but remained hard and intact, as compared with those of the control, Bombyx mori. This reveals that A. mimosae cocoons can be processed for natural silk fibre production and offer communities adjacent to forests an excellent opportunity to engage in production of natural wild silk.

Tungsten Resource-Saving： Cobalt Cermets Wastes Recycling and Concentrates Extraction

Potentials range is determined in which the cobalt-tungsten alloy phase selectively dissolved in solutions of phosphoric acid to form soluble compounds of these metals, while the tungsten carbide phase remains in the precipitate. It shows that tungsten ores and concentrates are decomposed at 1,050℃-1,100℃ in sodium chloride-sodium metasilicate melts to form two immiscible phases, namely, halide-tungstate, containing 96% to 99% of tungsten, and silicate, containing 90% of the rest ore components.

Cultural Presence of the Cretan Biodiversity in the Minoan Period and nowadays： A Discovery School Teaching Approach

The educational project prepared for students of High School 15-17 years old with the subject of Biodiversity in Minoan Period and Nowadays. It was an interdisciplinary approach of ecological and cultural views of biodiversity. Special educational material was prepared with photos and texts of archaeological excavations and field sampling which was used in real and virtual environment, in t~ discovery teaching of Natural Sciences and History subjects. Students, in a scientific research project with constructive teachings, followed the procedures by which scientists gather, analyze, synthesize, process and evaluate information of organisms of Crete since 4000 years. Crete is located between the natural limits of three continents, having the unique privilege to host permanently or in migration, distinctive species of these three continents. After having the research questions, teachers collected the educational material, organized the work groups, implemented the didactic intervention in the classroom, had the field sampling of plants, recognized the synchronous local and scientific names of the plants, constructed the botany book, photographed the collected organisms and all the concentrated material was delivered to the team members.

FPGA Resources Reduction by a Multiplexing Technique Applied on ANN-Based Harmonics Extraction Algorithms

In this paper, a multiplexing technique is applied on a neural harmonics extraction method, based on an efficient formulation of the instantaneous reactive power theory. This approach can be used in nonlinear loads compensation with APFs （Active Power Filters）. The architecture for reference current generation, synchronized by a neural phase lock-loop, is composed of three Adaline neural networks. This leads to an important consumption of field programmable gate array resources during implementation. The proposed technique uses only one Adaline and keeps the immunity of the approach under non-sinusoidal and unbalanced conditions of voltage. Simulation results of the neural harmonics detection system connected to a reference current controller show balanced and sinusoidal source currents under various conditions. Results with experimental measurement made on an APF test bench demonstrate its good performances on harmonics filtering. Moreover, the simplified structure from the new approach called mp-q method shows a significant resource reduction.

Issues of Access, Equity, and Quality in Early Childhood Development Programmes in Zimbabwe

The paper sought to explore issues of access, equity, and quality in the early childhood development （ECD） sub-sector in Zimbabwe. The massive expansion of ECD services prompted the author to undertake the study. Data were collected using focus group discussions, individual interviews, document analysis, and observations. Information from literature, research reports, policies, and practices was also analyzed in order to establish the state of affairs in the provision of ECD. The data were analyzed using theme identification methods to solicit emerging issues. Generally, it was found that on issues of access, equity, and quality in ECD in Zimbabwe, there is a quality-quantity dilemma with qualitative progress less conspicuous than quantitative progress. The resultant specific challenges include： large teacher-child ratio; lack of parental involvement, lack of trained ECD specialists with expertise in using a play-based curriculum; and shortage of equipment, material resources, and age appropriate infrastructure. In most ECD settings, there were inadequate health and nutrition provisions. Water, sanitation and health （WASH） facilities were found to be insufficient in most centres. The study recommended that there is need for： equal access to quality early childhood education; provision of infrastructure, provision of ability and age appropriate resources; and health, sanitation, and nutrition services especially in rural settings. Overall, ECD programmes in Zimbabwe should strive to attain quality more than quantity services. The need to train more early childhood specialists who would drive the ECD sub-sector is emphasized.

Comparative Evaluation between Water Parallel Pricing System and Water Pricing System in China: A Simulation of Eliminating Irrigation Subsidy

The reform in water pricing plays a critical role in agricultural production, which is believed to have great water savings potential. We consider eliminating irrigation subsidies as a simulation and conduct a comparative evaluation between the water parallel pricing system （WPPS） and the water pricing system （WPS）, which are incorporated into two computable general equilibrium （CGE） models, respectively. The results prove that, compared with WPPS, WPS would contribute higher capacities for water savings with more farming imports and less loss in farming output; households in rural and urban areas would benefit from more income and food consumption, which would be matched by increasing farming imports. A policy recommendation is that eliminating the irrigation subsidy should pay more concerns on alleviating the negative effects on farming outputs. Moreover, improvements in agricultural labor mobility and water demand elasticity are needed to enable more focus on the water conservation policy, particularly in WPS.

Respiration and Sorption of Water-Extractable Organic Carbon as Affected by Addition of Ca^(2+),Isolated Clay or Clay-Rich Subsoil to Sand

Clay addition to light-textured soils is used to ameliorate water repellency and to increase nutrient retention. However, clay addition may also increase the potential to bind organic matter and thus C sequestration. Divalent calcium ions （Ca2＋） play an important role in binding of organic matter to clay because they provide the bridge between the clay particles and organic matter which are both negatively charged. In the first experiment, quartz sand was mixed with clay isolated from a Vertosol at rates of 0, 50 and 300 g kg-1, finely ground mature wheat residues （20 g kg-1） and powdered CaSO4 at 0, 5 and 10 g kg-1. Soil respiration was measured over 28 d. Compared to the sand alone, addition of isolated clay at 300 g kg-1 increased cumulative respiration with a stronger increase than that at 50 g kg-1. Addition of CaSO4 increased electrical conductivity, decreased sodium adsorption ratio and reduced cumulative respiration. The latter can be explained by enhanced sorption of organic matter to clay via Ca2＋ bridges. In a second experiment, isolated clay or subsoil of the Vertosol without or with powdered CaSO4 at 10 g kg-1 were used for a batch sorption with water-extractable organic C （WEOC） from wheat straw followed by desorption with water. Addition of 10 g kg-1 CaSO4 increased sorption and decreased desorption of WEOC in both subsoil and isolated clay. In the third experiment, subsoil of the Vertosol was used for a batch sorption in which WEOC was added repeatedly. Repeated addition of WEOC increased the concentration of sorbed C but decreased the sorbed proportion of the added WEOC. This indicates that sorption of WEOC may be underestimated if it is added only once in batch sorption experaments.