General three-dimensional thermal illusion metamaterials

Thermal illusion aims to create fake thermal signals or hide the thermal target from the background thermal field to mislead infrared observers,and illusion thermotics was proposed to regulate heat flux with artificially structured metamaterials for thermal illusion.Most theoretical and experimental works on illusion thermotics focus on two-dimensional materials,while heat transfer in real three-dimensional(3D)objects remains elusive,so the general 3D illusion thermotics is urgently demanded.In this study,we propose a general method to design 3D thermal illusion metamaterials with varying illusions at different sizes and positions.To validate the generality of the 3D method for thermal illusion metamaterials,we realize thermal functionalities of thermal shifting,splitting,trapping,amplifying and compressing.In addition,we propose a special way to simplify the design method under the condition that the size of illusion target is equal to the size of original heat source.The 3D thermal illusion metamaterial paves a general way for illusion thermotics and triggers the exploration of illusion metamaterials for more functionalities and applications.

Hand Cooling Enhances the Proprioceptive Drift during Rubber Hand Illusion

Background: The neural representation of the body is easily altered by integrating multiple sensory signals in the brain. The “Rubber Hand Illusion” (RHI) is one of the most popular experimental paradigms to investigate this phenomenon. During this illusion, ownership of a rubber hand is temporarily induced. It was shown that external and continuous cooling of the palm enhanced the RHI, suggesting an association between altered the autonomic nervous system regulation and altered the sense of ownership of a specific limb. Purpose: To investigate whether artificially cooling the entire hand for a short period affects the magnitude of the illusion. Methods: Participants immersed their entire hand in cool, cold, or warm water for 1 min before the RHI procedure. Results: We found that cooling the entire hand enhanced the proprioceptive drift during the RHI but not the subjective feeling of ownership. In contrast, warming and intense cooling of the entire hand did not affect the RHI strength. Conclusion: Our results suggest that transient and moderate cooling of the entire hand was sufficient in enhancing the illusory disembodiment of one’s own hand.

Reconfigurable source illusion device for airborne sound using an enclosed adjustable piezoelectric metasurface

Source illusion is an important issue in acoustic fields that has significant applications in various practical scenarios.Recent progress in acoustic metasurfaces has broken the limitation of manipulating large-scale waves at subwavelength scales and enables a better illusion capability,while there is still a problem that most previous studies are hampered by a lack of tuning capability.Here we propose a reconfigurable source illusion device capable of providing azimuthallydependent phase delay in real-time via changing the static voltage distribution.The resulting device is implemented by employing an adjustable piezoelectric metasurface with a subwavelength thickness that can achieve a full 2π-phase shift while maintaining efficient transmittance.The effectiveness of our mechanism is demonstrated via two distinctive source illusion phenomena of shifting and transforming a simple point source without changing the device geometry.We anticipate that our methodology,which does not require a large device size or a complicated phased array,will open up new avenues for the miniaturization and integration of source illusion devices and may promote their on-chip applications in a variety of fields,such as acoustic camouflage and manipulation precision.

Push-Based Content Dissemination and Machine Learning-Oriented Illusion Attack Detection in Vehicular Named Data Networking

Recent advancements in the Vehicular Ad-hoc Network(VANET)have tremendously addressed road-related challenges.Specifically,Named Data Networking(NDN)in VANET has emerged as a vital technology due to its outstanding features.However,the NDN communication framework fails to address two important issues.The current NDN employs a pull-based content retrieval network,which is inefficient in disseminating crucial content in Vehicular Named Data Networking(VNDN).Additionally,VNDN is vulnerable to illusion attackers due to the administrative-less network of autonomous vehicles.Although various solutions have been proposed for detecting vehicles’behavior,they inadequately addressed the challenges specific to VNDN.To deal with these two issues,we propose a novel push-based crucial content dissemination scheme that extends the scope of VNDN from pullbased content retrieval to a push-based content forwarding mechanism.In addition,we exploitMachine Learning(ML)techniques within VNDN to detect the behavior of vehicles and classify them as attackers or legitimate.We trained and tested our system on the publicly accessible dataset Vehicular Reference Misbehavior(VeReMi).We employed fiveML classification algorithms and constructed the bestmodel for illusion attack detection.Our results indicate that RandomForest(RF)achieved excellent accuracy in detecting all illusion attack types in VeReMi,with an accuracy rate of 100%for type 1 and type 2,96%for type 4 and type 16,and 95%for type 8.Thus,RF can effectively evaluate the behavior of vehicles and identify attacker vehicles with high accuracy.The ultimate goal of our research is to improve content exchange and secureVNDNfromattackers.Thus,ourML-based attack detection and preventionmechanismensures trustworthy content dissemination and prevents attacker vehicles from sharing misleading information in VNDN.

Probing into the Souls Drifting in the Reality

There are a great many escapists in modern American drama, who indulge in their past or escape into the fort of dream. Great change of society, as well as traditional values, gives an impact on the escapists. They feel mixed-up and perplexed about their lives and future. The conflicts among pursuit and disillusionment, past and present, tradition and modernity, material and spirit, ideal and reality make the escapists choose to build a wall to separate them from the real world. They become the souls drifting in the reality, without knowing their status in society or the meaning of life.

Cantorian-Fractal Kinetic Energy and Potential Energy as the Ordinary and Dark Energy Density of the Cosmos Respectively

In a one-dimension Mauldin-Williams Random Cantor Set Universe, the Sigalotti topological speed of light is where . It follows then that the corresponding topological acceleration must be a golden mean downscaling of c namely . Since the maximal height in the one-dimensional universe must be where is the unit interval length and note that the topological mass (m) and topological dimension (D) where m = D = 5 are that of the largest unit sphere volume, we can conclude that the potential energy of classical mechanics translates to . Remembering that the kinetic energy is , then by the same logic we see that when m = 5 is replaced by for reasons which are explained in the main body of the present work. Adding both expressions together, we find Einstein’s maximal energy . As a general conclusion, we note that within high energy cosmology, the sharp distinction between potential energy and kinetic energy of classical mechanics is blurred on the cosmic scale. Apart of being an original contribution, the article presents an almost complete bibliography on the Cantorian-fractal spacetime theory.

Three-dimensional thermal illusion devices with arbitrary shape

Since the concept of invisible cloak was proposed by Pendry and Leonhardt in 2006, many researchers have applied the theory of coordinate transformation to thermodynamics and overcome the complexity of inhomogeneous and anisotropic of material parameters. However, only two-dimensional(2 D) thermal illusion devices are researched recently. According to this situation, our study focuses on three-dimensional(3 D) thermal illusion devices including shrinker(or invisible cloak),concentrator, amplifier, reshaper, and rotator with arbitrary shape in a general way. In this paper, the corresponding material parameters of thermal illusion devices mentioned above are derived based on the theory of transformation thermodynamics and the simulated results agree well with the theoretical derivations. In addition, the conventional invisible cloak just controls the temperature gradient rather than the temperature value which is more concerned in physical applications. Here,we find that the temperature value of the cloaked object can be controlled by adjusting the location of the original point of the coordinate system.

神奇的“Jllusion”

众所周知,在当今影视、广告制作中,爆炸、火焰、硝烟等特技效果能够引起强烈的视觉震撼,因此在一些优秀的影视、广告作品中这些特技效果会频频出现,介绍制作这些特技效果的操作技巧的文章数量很多。在众多的介绍中,使用软件主要集中于常见的3DS MAX、MAYA等3D软件,利用这些软件当然能够很好地制作出所需要的特技效果,但是这要求所使用的计算机硬件配置高,工作平台要好,而且生成这些特技效果往往需要很长的时间。为了找到一种更好的制作方法,既省时又能达到同样的效果,而且对计算机的硬件要求不要太高,笔者经过重重筛选,从网上下载了软件Illusion全英文版。

Design method of reusable reciprocal invisibility and phantom device

Reusable reciprocal invisibility and phantom device is proposed and designed based on multi-folded transformation optics and equivalent components. In comparison with the reported reciprocal invisibility cloaks, the material parameters of the device presented here are homogeneous, and the hiding of the target object does not require any “anti-object” at all,which dramatically breaks through the limitations of the “anti-object” design in previous reciprocal cloak design. Perfectly illusion effect is also found by reasonably setting the material parameters of the restored medium of the device, which can be used to confuse detection radars while hiding target objects. Last but not least, the proposed device has an open structure,which enables the target object enclosed by the device to perform material exchange and simplex transfer of information with the outside world through open channels. In other words, the proposed device has a reusable function, enabling stealth or phantom of new target objects without changing any parameters of the device.

Two-dimensional thermal illusion device with arbitrary shape based on complementary media

On the basis of transformation thermodynamics and compensation medium theory, we develop a method to design a two-dimensional thermal illusion device with arbitrary shape, and the general expression of thermal conductivity in the each region is obtained. Simulation results show that when an object is covered with the thermal illusion device, it will accurately perform the same temperature distribution signature as another object we have predetermined. Owing to the property of deceiving and interfering with the observer, the thermal illusion device can achieve generalized thermal stealth by using thermal metamaterials, which may have a potential application in military field.

亚洲最大超级游艇ILLUSION PLUS离港启航

8月12日,由中集来福士海洋工程有限公司旗下品牌普莱德游艇设计建造的超级游艇ILLUSION PLUS（＂幻想＂号）开启首航之旅,经深圳前往摩纳哥参加国际游艇展。ILLUSION PLUS是目前亚洲最大的超级游艇,其设计、品质、性能、内装等均满足全球最苛刻的欧洲标准。

Deflation and Stock Prices

While the literature on inflation and stock prices is plentiful,there is little literature on deflation and stock prices.This paper explores the empirical data and makes a theoretical analysis of the likely impact on stock prices when expectations change from inflation to deflation.Deflation has a bad name among some economists and most investors.However,from a stock market perspective,deflations’bad name may not be well-deserved.Several observations support this:1)The 1930s was a statistical outlier and not representative for a deflationary period and deflation does not seem to create recessions,causality goes the other way;2)real stock returns are positive and around average in the periods leading up to and following the onset of deflation;3)when moving from low inflation to mild deflation,P/E ratios are virtually unchanged;and 4)peak P/E ratios seem to be reached at inflation rates close to zero.The author proposes three possible explanations for the seemingly disconnect between the empirical data and the“default”ex ante belief of most economists and investors:availability heurist,deflation illusion,and tax related issues in connection with the tax hypothesis.

Authentification of Einstein’s Static Universe of 1917

Static cosmology has been abandoned almost a century ago because of phenomena which were unexplained at those times. However, that scenario can be revived with the modern findings of gravitational forces, coming from outside of the “luminous world”, tugging on our universe. These unexplained phenomena were: the redshift, the CMB, and Olbers’ paradox. All these can now be explained, as done in the present manuscript. 1) The observed redshift, which is commonly attributed to the Doppler effect, can also be explained as a gravitational redshift. Thus, the universe is not expanding, as has also been described in recent publications, thereby, making the “Big Bang” hypothesis unnecessary. 2) Gravitation is induced by matter, and at least some of the distant matter is expected to be luminous. That electro-magnetic emission is extremely redshifted, and thus perceived by us as CMB. CMB is not necessarily a historic remnant related to the “Big Bang”, rather it is the redshifted light, coming from extremely distant luminous matter. 3) According to Olbers’ paradox, the night sky is expected to be bright. The sky looks dark because the light coming from extremely faraway light sources, out of our visible universe, is extremely redshifted. Therefore it is perceived by us as CMB. As in the cosmological literature many problems with the “Big Bang” hypothesis have been described, where as the problems with the static universe model are resolved in the present manuscript, the static state scenario should be renovated.

2017香港家庭用品展综述

展会吸引了全球27个国家和地区的2280家展商参展,＂L.I.F.E＂4大展区,Lifestyle、Interior、Feast、Enrich分别呼应了＂Count on Copper＂、＂Own Jungle＂、＂Visual Illusion＂、＂Bamboology＂等4个潮流趋势展示区;各类家居用品及室内饰品精彩纷呈,集中体现了2018年春夏之设计潮流.本届展会新辟展区＂Lifestyle＂的＂咖啡精品廊＂、＂Feast＂的＂酒店及餐饮业用品＂,以及＂Enrich＂的＂建筑及五金世界＂,集60家展商呈现其建材、五金、DIY与卫浴设备的品质优势.展会汇聚128个海外买家团、7100名专业买家赴港参观,创造了众多商机,更增添了家居业界的信心. 展会吸引了全球27个国家和地区的2280家展商参展,＂L.I.F.E＂4大展区,Lifestyle、Interior、Feast、Enrich分别呼应了＂Count on Copper＂、＂Own Jungle＂、＂Visual Illusion＂、＂Bamboology＂等4个潮流趋势展示区;各类家居用品及室内饰品精彩纷呈,集中体现了2018年春夏之设计潮流.本届展会新辟展区＂Lifestyle＂的＂咖啡精品廊＂、＂Feast＂的＂酒店及餐饮业用品＂,以及＂Enrich＂的＂建筑及五金世界＂,集60家展商呈现其建材、五金、DIY与卫浴设备的品质优势.展会汇聚128个海外买家团、7100名专业买家赴港参观,创造了众多商机,更增添了家居业界的信心.

Wang Qimo's big illusion-“conjure a plane above the sea” achieved success

On June 17, 2006, the golden award winner magician Wang Qimo's special show—conjure a plane above the sea was held at the Big Sands Valley Beach of Lianyungang City. This show was sponsored by China Acrobats Association, Federation of Literary and Art Circles of Jiangsu

畅游4GLTE网络三星illusion

三星illusion的具体型号是SCH—1110，由美国运营商Verizon Wireless定制，运行于该公司的4GLTE网络。由于曝光后不久，三星官方就删除了此款产品的资料，

"Happy life"—Is It Really Happy?——A Review of the Short story "The Swimmer" by John Cheever

The short story "The Swimmer" is representative of John Cheever's suburban stories,which shows the vivid pictures of middle class people's "happy life" mode.The question is that is such a "happy life" really happy.After analyzing the protagonist Neddy Merril's Odyssean journey,the author concludes that so-called a "happy life" is no more than an illusion.

烟花的两种制作方法

烟花是在节目中经常用到的素材,虽然有素材库,但自己不能编辑,使用具有局限性,我们可以用比较简单的方法做出绚丽的烟火,本教程用Particle illusion(魔幻粒子)这是一个非常强大的粒子软件,可以非常方便的做出炫目的特技。