China Joins Hunt for Cosmic Rays

On the beautiful Haizi Mountain 4,410 m above sea level in southwest China's Sichuan Province,construction work has begun on one of the world’s biggest and most sensitive cosmic ray detection facilities.Upon completion in 2020,the 1.2 billion yuan(180 million dollar)Large High Altitude Air Shower Observatory(LHAASO)will not only search for the sources of different types of

Huge New Telescope to Boost Hunt for Alien Life

微软公司的创始人之一Paul Allen和前微软公司的技术总监NathanMyhrvold慷慨出手,献出巨资,筹建大型的新望远镜Allen Telescope Array,对人类探索地球以外的智能生命助一臂之力。本文并未对两位捐助者歌功颂德,而对人类目前寻找地球以外的高级动物的探索作了详尽的介绍。许多信息鲜活感人。 人类探索地球外的高级动物的努力已经进行了四十余年,英语甚至收入了SETI(=search for extraterrestrial intelligence)这样的专用名词及其相应的组织。 以下两段文字值得注意: While the best scientific estimates tell us the probability of intelligent lifeelsewhere in the universe is fairly high, there is great uncertainty and somecontroversy in the calculation. One thing however, is beyond dispute. That is, if we don't continuesupporting projects like the Allen Telescope Array, our chances of discovery willremain at zero. 预计在2005,Allen Telescope Array将投入使用。我们翘首盼望这一天的到来,更翘首盼望人类有朝一日能够发现人类并非茫茫宇宙之唯一,并能彻底揭开UFO一类的谜团。

Lonely Farmers Hunt for Romance

选文章的主题句写得真好,既有最新信息,又撩人,还有几分同情心。英国的农夫也怪可怜的!读者需留心,文中的bachelor的意思可不是“学士”,而是“单身汉”!细心的读者也许不会不追究英国乡间女性短缺的缘由。文中有这样一句:…the shortage of women had coincided(一致)with the decline in Britain's rural economy。

Self-organized search-attack mission planning for UAV swarm based on wolf pack hunting behavior

Cooperative search-attack is an important application of unmanned aerial vehicle(UAV)swarm in military field.The coupling between path planning and task allocation,the heterogeneity of UAVs,and the dynamic nature of task environment greatly increase the complexity and difficulty of the UAV swarm cooperative search-attack mission planning problem.Inspired by the collaborative hunting behavior of wolf pack,a distributed selforganizing method for UAV swarm search-attack mission planning is proposed.First,to solve the multi-target search problem in unknown environments,a wolf scouting behavior-inspired cooperative search algorithm for UAV swarm is designed.Second,a distributed self-organizing task allocation algorithm for UAV swarm cooperative attacking of targets is proposed by analyzing the flexible labor division behavior of wolves.By abstracting the UAV as a simple artificial wolf agent,the flexible motion planning and group task coordinating for UAV swarm can be realized by self-organizing.The effectiveness of the proposed method is verified by a set of simulation experiments,the stability and scalability are evaluated,and the integrated solution for the coupled path planning and task allocation problems for the UAV swarm cooperative search-attack task can be well performed.

Feedback Control for Ecosystem Management:The Case of Wolf-Elk-Hunting Dynamics in the US Mountain West

The purpose of this paper is to explore the promise of utilizing some relatively new feedback control techniques in ecosystem management. First, we set forth a basic ecological-economic model of a predator-prey-hunting system in which both the predator and prey have use(flow) and non-use(stock) value and when the predator can inflict transboundary damages. We then use new data from the US Mountain West to show how a particular feedback approach—linear parameter-varying(LPV) control—can be utilized in this context. Our LPV model is able to quantify the cost of managing disturbances that inevitably arise as a manager tries to keep the actual path of the system "close" to its optimum. The results suggest management strategies in mountain ecosystems that feature large, mammalian carnivores.

Cooperative multi-target hunting by unmanned surface vehicles based on multi-agent reinforcement learning

To solve the problem of multi-target hunting by an unmanned surface vehicle(USV)fleet,a hunting algorithm based on multi-agent reinforcement learning is proposed.Firstly,the hunting environment and kinematic model without boundary constraints are built,and the criteria for successful target capture are given.Then,the cooperative hunting problem of a USV fleet is modeled as a decentralized partially observable Markov decision process(Dec-POMDP),and a distributed partially observable multitarget hunting Proximal Policy Optimization(DPOMH-PPO)algorithm applicable to USVs is proposed.In addition,an observation model,a reward function and the action space applicable to multi-target hunting tasks are designed.To deal with the dynamic change of observational feature dimension input by partially observable systems,a feature embedding block is proposed.By combining the two feature compression methods of column-wise max pooling(CMP)and column-wise average-pooling(CAP),observational feature encoding is established.Finally,the centralized training and decentralized execution framework is adopted to complete the training of hunting strategy.Each USV in the fleet shares the same policy and perform actions independently.Simulation experiments have verified the effectiveness of the DPOMH-PPO algorithm in the test scenarios with different numbers of USVs.Moreover,the advantages of the proposed model are comprehensively analyzed from the aspects of algorithm performance,migration effect in task scenarios and self-organization capability after being damaged,the potential deployment and application of DPOMH-PPO in the real environment is verified.

The Importance of Hunting and Hunting Areas for Big and Small Game （Food） for the Tourism Development in the Crna River Basin in the Republic of Macedonia

The Crna River is a river in the Republic of Macedonia, right tributary to Vardar. Its source is in the mountains of Western Macedonia, west of Krusevo. It flows through the village of Sopotnica, and southwards through the plains east of Bitola. The name means ＂black river＂ in Macedonian, which is translation for its former Thracian name. The purpose of this paper is to show the hunting and hunting areas for big and small Game （food）, the structure of the areas of certain hunting, fishing, fishing water objects, fish species, fishponds up to 20 years shown by municipalities and individual farms with ponds in the basin of Black River. It had used statistical data for the hunting grounds by areas, fishing ponds. Fish is very diverse in this river. Hunting in the Black River basin is of great importance for the economy of Republic of Macedonia. It is also a necessary factor for development of other economic activities.

Aneurysm Clipping and Outcome for Hunt &Hess Grade 4, 5 Subarachnoid Hemorrhage—A Literature Review

“Subarachnoid Hemorrhage is non-traumatic nasty bleeding into the subarachnoid area, the territory between the arachnoid and the piamater of the central nervous system showing prompt developing signs of neurological sequelae”. It is one among the neurological emergencies which is a very distressing cerebrovascular disease with complicated mechanisms that risks brain perfusion and its function, having higher morbidity and mortality rates. Its mortality rate is still ranged between 8.3% and 66.7%, with noticeable regional variations, beside recent advances in treatment approaches. The incidence of SAH among the population of 2 - 22.5/100,000 was reported with a minimum of 60% of aneurysm ruptures occurring amid ages of 40 and 60 years with 3:2 male:female ratio. The rupture risks for unruptured aneurysms are increased by the issues like present smokers, larger size of aneurysm, and amid young population. The surgical treatment decision should be contemplated upon factors such as aneurysm’s size, aneurysm’s location, patient’s illness history, and surgeon’s operative experiences. Latest technical progresses in imaging techniques, increased consideration of illness history, more awareness of incidences of aneurysms and use of micro neurosurgery, have raised the chance for detection of subarachnoid hemorrhage (SAH) and possible better outcomes with surgical management. Factors that may affect outcome include age, size and site of aneurysm, interval between ictus and surgery, CT Fisher Grade & Hunt and Hess Grading earlier to surgery, & Glasgow Coma Scale at the while of discharge. The studies here support the wide spread concept that surgical clipping of SAH for Hunt and Hess Grade 4, 5 SAH, which is also considered as poor Grade SAH stipulates an effective treatment if done earlier provides better outcome.

Flight Behavioural Responses for African Ungulates across Species and Vegetation Covers in a Trophy Hunting Ecosystem: A Case Study from Selous Game Reserve, Tanzania

Trophy hunting has severe consequences on wild animals’ behaviors, which in return has implications for affecting wildlife populations. The Selous Game Reserve is a protected area in Tanzania that has been subjected to commercial trophy hunting for decades, and information about the effects of trophy hunting on animals’ welfare is still scarce. The Flight Initiating Distance (FID) can be a good measure to evaluate the welfare of animals and the level of risk perception towards anthropogenic disturbances, including trophy hunting. The study used linear mixed models to assess the flight responses of twelve commonly hunted species in the Selous game reserve (S.G.R.). The study compared animal vigilance between species, vegetation types, and group size. The FID varied between species, with which more vigilance was observed in zebras, elands, wildebeests, and sable antelopes. The study found a significant influence of vegetation cover on individual species’ FID. Further, the study found a significant influence of group size on animals’ vigilance (L. M. M., 95% CI = 0.590 - 4.762), in which there was a decrease in FID with an increase in group size for wildebeests. At the same time, other species, such as buffaloes, eland, hartebeests, and zebras, had their FIDs increasing with the increase in group size. We conclude that the impact of trophy hunting on savannah ungulates varies between species, vegetation covers, and group size of individual species. Regulatory authorities should consider minimum approach distances by trophy hunters in different vegetation cover to reduce animal biological disturbances.

Multi-Robot Collaborative Hunting in Cluttered Environments With Obstacle-Avoiding Voronoi Cells

This work proposes an online collaborative hunting strategy for multi-robot systems based on obstacle-avoiding Voronoi cells in a complex dynamic environment. This involves firstly designing the construction method using a support vector machine(SVM) based on the definition of buffered Voronoi cells(BVCs). Based on the safe collision-free region of the robots, the boundary weights between the robots and the obstacles are dynamically updated such that the robots are tangent to the buffered Voronoi safety areas without intersecting with the obstacles. Then, the robots are controlled to move within their own buffered Voronoi safety area to achieve collision-avoidance with other robots and obstacles. The next step involves proposing a hunting method that optimizes collaboration between the pursuers and evaders. Some hunting points are generated and distributed evenly around a circle. Next, the pursuers are assigned to match the optimal points based on the Hungarian algorithm.Then, a hunting controller is designed to improve the containment capability and minimize containment time based on collision risk. Finally, simulation results have demonstrated that the proposed cooperative hunting method is more competitive in terms of time and travel distance.

Integration of bio-inspired limb-like structure damping into motor suspension of high-speed trains to enhance bogie hunting stability

Hunting stability is an important performance criterion in railway vehicles.This study proposes an incorporation of a bio-inspired limb-like structure(LLS)-based nonlinear damping into the motor suspension system for traction units to improve the nonlinear critical speed and hunting stability of high-speed trains(HSTs).Initially,a vibration transmission analysis is conducted on a HST vehicle and a metro vehicle that suffered from hunting motion to explore the effect of different motor suspension systems from on-track tests.Subsequently,a simplified lateral dynamics model of an HST bogie is established to investigate the influence of the motor suspension on the bogie hunting behavior.The bifurcation analysis is applied to optimize the motor suspension parameters for high critical speed.Then,the nonlinear damping of the bio-inspired LLS,which has a positive correlation with the relative displacement,can further improve the modal damping of hunting motion and nonlinear critical speed compared with the linear motor suspension system.Furthermore,a comprehensive numerical model of a high-speed train,considering all nonlinearities,is established to investigate the influence of different types of motor suspension.The simulation results are well consistent with the theoretical analysis.The benefits of employing nonlinear damping of the bio-inspired LLS into the motor suspension of HSTs to enhance bogie hunting stability are thoroughly validated.

Hot Season for Textile Graduates Job Hunting

The economy is recovering in most parts of the world, which marks its entering into a post-crisis era. The financial crisis breaking out in the new century gave a heavy blow on the world's employment. As the unemployment rate was setting a new record in America, which made Obama's approval ratings plummeting, Chinese textile graduates will make their own career decisions.

不典型Ramsay Hunt综合征误诊分析

目的增加对不典型RamsayHunt综合征的认识,提高诊治水平。方法分析3例不典型RamsayHunt综合征误诊误治原因。例1无面瘫,首先出现其他颅神经症状声嘶(左喉返神经麻痹)和左梨状窝积液(咽缩肌麻痹),第5天才于耳廓后方出现2粒疱疹。例2首先出现面瘫,面瘫后一周才于右侧颊粘膜部出现小疱疹。例3一侧剧烈头疼,2天后鼓膜轻微充血,5天后出现面瘫,一周后颈部才出现疱疹。结果例1误诊为下咽癌;例2误诊为Bell面瘫;例3误诊为脑血管疾病。结论疱疹延迟出现、异位疱疹、首先出现其他颅神经损害的症状,是造成不典型RamsayHunt综合征误诊甚至误治的原因。临床医生应加强对不典型RamsayHunt综合征的认识,注意鉴别诊断,提高诊疗水平。

翳风穴梅花针叩刺放血联合星状神经节阻滞治疗急性期Hunt综合征随机对照研究

目的:探讨翳风穴梅花针叩刺放血拔罐联合星状神经节阻滞(SGB)在Hunt综合征急性期的临床效果及评价。方法:选取48例急性期Hunt综合征患者,随机分为观察组和对照组,每组24例。观察组采用翳风穴梅花针叩刺联合SGB治疗,对照组口服泛昔洛韦颗粒剂、甲钴胺胶囊治疗。观察并比较两个疗程结束后两组患者疱疹结痂、疼痛消失、面瘫恢复时间及有效率等。结果:治疗后,观察组疼痛消失、疱疹结痂以及面瘫恢复时间均少于对照组,差异有统计学意义(P<0.05);治疗后观察组总有效率高于对照组,差异有统计学意义(P<0.05)。结论:翳风穴梅花针叩刺放血拔罐联合SGB在Hunt综合征急性期的临床疗效确切,无不良反应及其他并发症。

Hunt综合征32例临床分析

目的为提高对Hunt综合征的认识和诊断水平,并分析无环鸟苷和激素对本病的治疗效果。方法对32例Hunt综合征的临床特征进行分析,确诊后应用无环鸟苷和地塞米松治疗并观察疗效。结果该病的临床表现因病毒侵犯机体的部位和程度不同呈多样性。32例中治愈24例,有效5例,无效3例。结论早期应用无环鸟苷及地塞米松对本病有较好的治疗作用。

翳风穴叩刺放血联合星状神经节阻滞治疗急性期Hunt面瘫的疗效观察

目的:探讨翳风穴梅花针叩刺放血联合星状神经节阻滞(SGB)对急性期Hunt面瘫的临床效果及评价。方法:选取70例急性期Hunt面瘫患者,随机分为观察组和对照组,每组35例。观察组在药物治疗的基础上,采用翳风穴梅花针叩刺联合SGB治疗,对照组只接受基础药物治疗。两组患者在针刺治疗3个疗程后进行H-B评分比较面部神经功能分级改善情况、临床疗效比较等。结果:治疗后,观察组面神经功能评分优于对照组,差异有统计学意义(P<0.05);观察组痊愈率高于对照组,差异有统计学意义(P<0.05)。结论:翳风穴梅花针叩刺放血拔罐联合SGB在Hunt面瘫急性期的临床疗效确切,无不良反应及其他并发症。

腕踝针联合西药治疗Hunt综合征耳道疼痛疗效观察

Hunt综合征是一种因水痘-带状疱疹病毒侵犯面部神经和听神经所致的疾病,表现为耳内或耳周急剧疼痛和同侧面神经麻痹,伴重听、眩晕、发热、头痛等。目前药物疗效欠佳,严重影响患者的生活质量。笔者采用腕踝针联合西药治疗Hunt综合征耳部疼痛取得较好疗效,现报道如下。

33例Hunt综合征的听力评估

我们分析了１９８３年３月～１９９３年３月间确诊为Ｈｕｎｔ综合征者３３例。耳痛、耳部带状疱疹和面瘫是该征的主要症状。本文有４８．４８％的病例出现感音神经性聋。一般来说，听觉功能的损害是较轻的，高频听力损害较重。听力损害程度和类型与面神经功能的恢复无关，但感音神经聋有助于该征的诊断。同时发现面神经功能获得完全恢复者，镫骨肌反射正常或重新出现。故镫骨肌反射检查对评估面瘫的预后是有意义的。