A comparative study of the denoising methods of Thematic Mapper images for forest areas

The noises of remote sensing images, caused by imaging system and ground environment, negatively affect the accuracy and efficiency in extracting forest information from remote sensing images. The denoising is critical for image classifications for forest areas. The objective of this research is to assess the effectiveness of currently used spatial filtering methods for extracting with forest information related from Landsat 5 TM images. Five spatial filtering methods including low-pass filter, median filter, mean filter, sigma filter and enhanced self-adaptive filter were examined. A set of evaluation indices was designed to assess the ability of each denoising method for flatness, edge/boundary retention and enhancement. Based on the designed evaluation indices and visual assessment, it was found that sigma filter （D=1） and enhanced self-adaptive filter were the most effective denoising methods in classifying TM images for forest areas.

义合会议对边区安全保卫工作的影响考论——基于榆林公安警史文献的整理

作为人民公安的早期领导机构,边区政府保安处在抗日战争和解放战争时期对边区的安全保卫工作起到了重要作用。义合会议受全国土地会议的影响,在对边保工作的纠偏和整顿中也带有较为浓重的“左倾”色彩,周兴在复杂的斗争环境中既敢于坚持真理,又勇于修正错误,其实事求是的党性原则最终得到了中央和西北局的肯定。历史地看,义合会议虽然在边保的队伍稳定、组织力量和工作评价上有些消极影响,但在强化党的领导、改善干部作风、提高工作水平和加强工作联系方面有着积极的作用,使边保迅速改正了许多严重的错误与缺点,为边保工作的健康发展奠定了坚实的基础。

电力市场中计算输电电价的一种新方法

该文基于边际成本理论,提出了一种计算输电电价的新方法,在保留边际成本定价中的经济信息的同时,综合考虑了无功电价,又考虑了电网的年收支平衡,最后,通过潮流跟踪法,确定有功、无功电价及固定成本在各个用户间的分配,使定价模型更加合理、完善。经IEEE6节点系统算例证明,该文所提的模型和算法是正确而有效的,具有重要的理论意义和工程实际价值,特别是对于在厂网分开后电网建设以及维护电网稳定的资金筹措有相当的指导价值。

Improvement and application of preprocessing technique for multitrace seismic impedance inversion

The conventional poststack inversion uses standard recursion formulas to obtain impedance in a single trace.It cannot allow for lateral regularization.In this paper,ID edge-preserving smoothing(EPS)fi lter is extended to 2D/3D for setting precondition of impedance model in impedance inversion.The EPS filter incorporates a priori knowledge into the seismic inversion.The a priori knowledge incorporated from EPS filter preconditioning relates to the blocky features of the impedance model,which makes the formation interfaces and geological edges precise and keeps the inversion procedure robust.Then,the proposed method is performed on two 2D models to show its feasibility and stability.Last,the proposed method is performed on a real 3D seismic work area from Southwest China to predict reef reservoirs in practice.

Analysis of coverage problem under border effects in wireless sensor networks

Wireless sensor networks can be used to monitor the interested region by deploying dense sensor nodes. Coverage is a primary metric to evaluate the capacity of monitoring. In this paper, we focus on the coverage problem under border effects, where the sensor nodes are distributed in a circle-shaped region randomly. Under this scenario, we derive the expected coverage of the sensor node and the total network coverage provided by n sensor nodes accurately by probability. These findings are useful to determine the related parameters （sensing range, number of sensor nodes and radius of monitored region） for a specific network coverage ratio. Simulation results demonstrate that our analysis is correct and effective.

A Bayesian Super Resolution Algorithm Based on Synthetic Gradient Distribution

A novel Bayesian super resolution (SR) algorithm based on the distribution of synthetic gradient is proposed. The synthetic gradient combines prior information in horizontal, vertical, and diagonal directions. Its distribution is modeled as a Lorentzian function and regarded as a new image model which can sufficiently regularize the ill-posed algorithm and preserve the edges in the reconstructed images. The graduated nonconvexity (GNC) optimization is employed to guarantee the convergence of the proposed Lorentzian SR (LSR) algorithm to the global minimum. The performance of LSR is compared with conventional algorithms, and experimental results demonstrate that the proposed algorithm obtains both subjective and objective gains.

Numerical Simulations of the Performance of Steel Guardrails Under Vehicle Impact

Road side barriers are constructed to protect passengers and contain vehicles when a vehicle crashes into a barrier. In general, full-scale crash testing needs to be carried out if a geometrically and structurally equivalent barrier has not previously been proven to meet the requirements of containing the vehicle and dissipating sufficient impact energy for passenger protection. As full-scale crash testing is very expensive, the number of data that can be measured in a test is usually limited, and it may not always be possible to obtain good quality measurements in such a test, a reliable and efficient numerical simulation of crash testing is therefore very useful. This paper presents finite element simulations of a 3-rail steel road traffic barrier under vehicle impact. The performance levels defined in Australian Standards AS5100 Clause 10.5 for these barriers are checked. The numerical simulations show that the barrier is able to meet low performance levels. However, the maximum deceleration is higher than the acceptable limit for passenger protection. If present, a kerb launches the vehicles into the barrier, allowing for the possibility of overriding the barrier under certain circumstances, but it redirects the vehicle and reduces the incident angle, which reduces impact force on the barrier. Further investigation into all common kerb profiles on roads should be carried out, as only one kerb profile is investigated in this study.

Stability evaluation and protection of slope for Laosongling-Yanji Highway

The authors analyzed the engineering geological characteristics of the slope of the study area (K75+840-K76+340). Two typical cross-sections have been chosen to analyze the failure modes after the excavation of the highway. Different types of the failure modes have been calculated and analyzed. The results show that some dealing methods have been advised to ensure the stability of the slopes.

Study on Original Ecological Tridimensional Slope Vegetation

No matter from the perspective of slope protection, landscape effect and construction cost, or from the perspective of ecological benefit, the development of original ecological tridimensional vegetation has become the inevitable trend for slope vegetation in pursuit of protecting ecological condition, decreasing soil erosion, maintaining ecological balance and beautifying environment of slope. The concept of original ecological tridimensional slope vegetation is proposed in this paper, and the original ecological tridimensional slope vegetation is studied through theoretical analysis and experiments. Specifically, the mechanical effect of slope vegetation in reinforcing the cohesion and shear strength of soil mass is firstly discussed, and then experiments are performed to study the water interception and containing function of slope under various vegetation conditions. Moreover, the relation between soil moisture and cohesion, the relation between root distribution density and cohesion, and the relation between root distribution density and soil shear strength are also studied based on experiments.Finally, based on field observation, the soil erosion states of slope under various vegetation conditions are comparatively studied. It is found that the original ecological tridimensional slope, which combines grass,shrub and tree, can generate comprehensive slope protection effects, and hence strengthen the slope protection ability and bring multiple slope protection benefits. Thereby, the theoretical foundation for developing original ecological tridimensional slope vegetation is established.

Effects of stand characteristics on tree species richness in and around a conservation area of northeast Bangladesh

We investigated the effect of tree cover,forest patch and disturbances on tree species richness in a highly diverse conservation area of northeast Bangladesh.A systematic sampling protocol was adopted and 80 sub-plots from twenty five 1 ha plots were used for the vegetation survey.Linear regression analysis was performed to understand the effect of patch area,disturbances and tree cover on tree species richness.Ordination using Redundancy analysis(RDA) and Non-metric Multi Dimensional Scaling(NMDS) were also performed to explore the tree species compositional similarities along the stand characteristics gradient and locations of the sample plots.Our study revealed that,forest patch size has greater influence on species richness.Areas with medium level of disturbances have shown greater species richness.In constrained ordination the selected explanatory variables regulated the richness of common species.Our findings can be useful for better forest management and restoration of landscapes of conservation needs using ecologically important species.

Socially Excluded Children： Listening to the Experiences of the Inmates of the Institutional Care

Children without parents are not only among the most vulnerable members of society--their care and protection also present a major child-care policy challenge. In spite of this, they are all but doomed to have their special needs ignored and their rights abused in many cases. Children without a biological family, who are cared for in some forms, also run the risk of a life which holds fewer possibilities for healthy development and a supportive environment than that of their peers with families. The range of threats is wide, from extreme neglect （lack of access to education, medical care, a balanced diet, etc.） to social stigmatization and marginalization and the fact that the loss of a family represents a serious trauma that stays with a person throughout his/her life and can potentially be seriously damaging if the person has not had any support in coping with it in childhood. The present study is conducted among the inmates （children） admitted in the ashrams （orphanages） who come from underprivileged socio-economic backgrounds. Information was collected from two orphanages of Sambalpur district situated in the western part of Odisha. These are Dhankauda Kanyaashram （for girls） and Dhankauda Balashram （for boys）. The paper examines a wide range of care interventions for orphans, including family care, institutional care, community-based care, and rights-based care. A lack of direction, inadequate care, ignorance, and discrimination can make the trauma experienced by orphans more intense and ultimately ensure that they really do not succeed.

Conflict Within the Boundary of Nature Reserve： The Case of Crocker Range Park in Sabah, Malaysia

For the formation of nature reserves can directly affect the livelihood of indigenous people living in the area, negotiation between the authority and the community is crucial to the management of the natural resources. Crocker Range Park is the largest state park in Sabah state, Malaysia. Since there is a village community living within the boundary of the nature reserve, the state government and the villagers have had a conflict over the land rights. Until the government and the village delegation reached an agreement on the park＇s management plan in 2015, three actors intervened in the conflict： PACOS Trust, Japan International Cooperation Agency （JICA）, and Japan Overseas Cooperation Volunteers （JOCV）. In this study, these interventions by different actors were analyzed with the Tripartite Conflict Management （TCM} model. The results indicate that JOCV was the sole actor that was able to communicate with both the state government and the villagers. To support the result, a preliminary research was conducted, and the villagers＇ perception was investigated through a questionnaire survey. This paper concludes that JOCV was perceived as an actor that can be trusted more than JICA and the state government. This conclusion supports the result of the analysis of TCM model.

Slope Reinforcement for Housing in Three Gorges Reservoir Area

The Three Gorges Project of the Yangtze River is the largest hydropower-complex project under construction in the world. Under the largescale relocation projects, 2874 engineered slopes are formed along with the construction of new towns. In this paper, the cutting slopes are mainly soil slopes and rock slopes. Soil slopes include residual soil slopes, colluvial accumulation slopes, swelling soil slopes, and artificial earth fill slopes, etc. Rock slopes include blocky structure rock slopes, layer structure rock slopes, and clastic structure rock slopes, etc. Varied protection measures have been used for slope protection in the reservoir area including shotcrete concrete-anchor bars, frame beams, retaining walls, slope stabilizing piles, sheet-pile walls, anchorage anti-shear tunnels, flexible protection grids, and drainage, etc. Besides, slope deformation monitoring systems have been set up to monitor deformation failure and the stability state of slopes. The protection measures have guaranteed slope safety and maintained a harmony with the urban environment and surrounding landscape.

TESTING k-EDGE-CONNECTIVITY OF DIGRAPHS

This paper presents an algorithm that tests whether a given degree-bounded digraph is k-edge-connected or E-far from k-edge-connectivity. This is the first testing algorithm for k-edge- connectivity of digraphs whose running time is independent of the number of vertices and edges. A digraph of n vertices with degree bound d is ε-far from k-edge-connectivity if at least εdn edges have to be added or deleted to make the digraph k-edge-connected, preserving the degree bound. Given a constant error parameter ε and a degree bound d, our algorithm always accepts all k-edge-connected digraphs and reiects all digraphs that is ε-far from k-edge-connectivity with orobabilitv at least 2/3.It runs in O（d（εd^-c）^k logεd^-1O）（c〉1 is a constant）time when input digraphs are restricted to be （k-1）-edge connected and runs in O（d（εd^-ck）^klogεd^-kO）（c〉1 is a constant）time for general digraphs.

Peripheral deep anterior lamellar keratoplasty using a cryopreserved donor cornea for Terrien's marginal degeneration

Objective： To evaluate the clinical efficacy of peripheral deep anterior lamellar keratoplasty （DALK） using a cryopreserved donor cornea for Terrien＇s marginal degeneration （TMD）. Methods： Thirty-one eyes of 27 patients with TMD underwent peripheral DALK using cryopreserved donor corneas, According to the distance between the inner edge of the lesion and the limbus, a ring-shaped or D-shaped DALK was performed. All grafts were stored at -20 ℃. Cryopreserved comeoscleral rims were prepared for ring-shaped grafts and cryopreserved whole eyeballs were prepared for D-shaped grafts. The general conditions, intraoperative performance, postoperative corneal reconstruc- tion, astigmatism, best corrected visual acuity （BCVA）, and various complications were analyzed. Results： Ring-shaped DALK was performed in 28 eyes and D-shaped DALK was performed in 3 eyes. Postoperative follow-up time was （28.4±24.8） months. There was evidence of inflammation before surgery in 12 eyes （38.7%） and intraoper- ative perforation occurred in 13 eyes （41.9%）. The corneal structures of all eyes were reconstructed. Postoperative astigmatism and BCVA showed improvement （both P=0.00） except for cases that underwent D-shaped DALK. Ten eyes （32.2%） developed transient ocular hypertension and one eye （3.2%） developed secondary glaucoma. No pri- mary disease recurrence or corneal allograft rejection was observed. Conclusions： Peripheral DALK for TMD using cryopreserved donor tissue is an effective technique that eliminates rejection and extends the use of donor eyes. Inflammatory history or intraoperative perforation has no adverse effect on graft recovery. However, D-shaped DALK did not achieve good visual outcomes.

Cross-national Buddhism and Identity Construction in Ch＇oe Ch＇iwon＇s ＂Four Mountains Stele＂

This paper aims to evaluate how Chart Buddhism played a part in Buddhist discourses reflecting an increased sense of legitimacy in ninth-century East Asia. It may not surprise us that the sinicisation of Buddhism implies a process of identity construction to place China in the centre. Culture and religion joined together in this process, first in China and then in Korea. However, the location of centrality or marginality was not fixed in Buddhist ontology. Rather, innovative Buddhist intellects such as Ch＇oe Ch＇iwon （b. 857 A.D.） ventured to create a reversal of centre and margin. In Ch＇oe Ch＇iwon＇s inscriptions for four Korean Son schools （the total of nine schools are also known as nine mountains）, an attempt to supersede China through Chan Buddhism is conspicuous. It is particularly inter- esting to note that, in the context of the cross-border transmission of Buddhism, the mobility of ＂Chan patriarchs＂ was essential in maintaining the legitimacy and continuity. This characteristic of the mobility of Chan patriarchs is seen in the Korean masters depicted by Ch＇oe Ch＇iwon＇s, namely Chingam, Ranghye and Chijong.

Designed in China： A Legal Frontier

China＇s ＂Five-Year Plan＂ is a national strategy document developed by the country＇s top leaders. Manifest in its guidelines was a concept that the developed world has traditionally and freely acknowledged, but that China has only recently become an acquaintance with. Specifically, the plan labels innovation as one of its focus areas, with a goal to move up in the value chain of global economic powers by abandoning old heavy industry and building up bases of modern information-intensive infrastructure. These objectives are to be facilitated by actions which include the strengthening of intellectual property rights protection and enforcement and represents another notch on China＇ s growing shelf of advancements in the area. This paper will discuss the current state of China＇s intellectual property legal framework, the increasing awareness amongst Chinese leadership to bolster the framework and the barriers which will inevitably form in the eye of progress. The analysis will delve into the history of intellectual property in China and culminate with a glance into today＇s political and cultural landscape. The goal of this paper is to examine the importance of devising a stable legal framework in order for China to successfully adhere with the innovation aspect of its current Five-Year Plan.