A Preliminary Study on the Shaping of Outdoor Space in Future Urban Community

Nowadays, the singularity of outdoor space in urban community has been unable to meet the needs of people. The concept of home, the smallest unit of society, is changing with the change of family structure. The huge living community consists of a family of loose relationship or fragmented families, each of which is an island. In the past, it is said that a neighbor that is near is better than a brother far off. However, at present, a close neighbor is like a stranger. The walls of the building have become a barrier for people to communicate. People’s activities should not be restricted by the ”box” of home. Can we open the walls and re-design the outdoor space? Therefore, we begin to think about the connection between people, can we achieve it through space? Can there be more public space between neighborhoods? Can such a public space be used as part of the family space again? In this paper, the outdoor space of urban community is taken as the research object to strive to break the boundaries of traditional indoor and outdoor space. How to optimize the outdoor public space in urban communities to promote residents’ communication is taken as the purpose of research to carry out a new design of this kind of space. The outdoor space outside the traditional wall is combined with the living needs of present people to discuss the possibility shaping of outdoor space in urban community

Urban Renewal Design-A Probe into the Reconstruction Mode of Urban Villages in Xi’an

Theproblemofvillagesinthecityisaproblemleftoverbythehistoryofdifferentstages of urban development.Itislikeapieceof” urban psoriasis”that affects the construction of the future city. How to explore a reasonable urban village reconstruction mode is of great significance for the future development of the city. In this paper, based on the investigation and analysis of the existing urban village construction environment in Xi’an, the author proposes the imagination of future living space mode of the village in the city, and explores how to transform the existing construction environment space of thevillageinXi’anCitytoreconstructthenewurbanpubliclivingspace,thus effectively driving the urban regional vitality, reasonably integrating villages in the City into the existing urban space development, and giving the village a new function and vitality

Design of Millimeter-wave Detector for Gyrotron Power Monitoring

The real-time power monitoring of gyrotron is one of the key issues in the operation of electron cyclotron resonance heating system. The detector can be used for real-time power monitoring. We analyzed the principle of diode detection and designed a D-band wideband detector based on Schottky diode in this paper. The detector includes a waveguide-to-microstrip transition, a matching circuit, a diode, and a low pass filter. A novel waveguide-to-microstrip transition was developed based on probe coupling. A wideband lossy matching circuit was developed based on tapered-line and series matching resistor. The simulation results show that when the input power is -30dBm at 140 GHz, the detection sensitivity is about 1600V/W.Comment: 12 pages, 19 figure

Effect of a built-in electric field in asymmetric ferroelectric tunnel junctions

The contribution of a built-in electric field to ferroelectric phase transition in asymmetric ferroelectric tunnel junctions is studied using a multiscale thermodynamic model. It is demonstrated in details that there exists a critical thickness at which an unusual ferroelectric-\'\' polar non-ferroelectric\rq\rq phase transition occurs in asymmetric ferroelectric tunnel junctions. In the \'\' polar non-ferroelectric\rq\rq phase, there is only one non-switchable polarization which is caused by the competition between the depolarizing field and the built-in field, and closure-like domains are proposed to form to minimize the system energy. The transition temperature is found to decrease monotonically as the ferroelectric barrier thickness is decreased and the reduction becomes more significant for the thinner ferroelectric layers. As a matter of fact, the built-in electric field does not only result in smearing of phase transition but also forces the transition to take place at a reduced temperature. Such findings may impose a fundamental limit on the work temperature and thus should be further taken into account in the future ferroelectric tunnel junction-type or ferroelectric capacitor-type devices.Comment: 9 pages, 8 figures, submitted to PR

Deep Self-Taught Learning for Weakly Supervised Object Localization

Most existing weakly supervised localization (WSL) approaches learn detectors by finding positive bounding boxes based on features learned with image-level supervision. However, those features do not contain spatial location related information and usually provide poor-quality positive samples for training a detector. To overcome this issue, we propose a deep self-taught learning approach, which makes the detector learn the object-level features reliable for acquiring tight positive samples and afterwards re-train itself based on them. Consequently, the detector progressively improves its detection ability and localizes more informative positive samples. To implement such self-taught learning, we propose a seed sample acquisition method via image-to-object transferring and dense subgraph discovery to find reliable positive samples for initializing the detector. An online supportive sample harvesting scheme is further proposed to dynamically select the most confident tight positive samples and train the detector in a mutual boosting way. To prevent the detector from being trapped in poor optima due to overfitting, we propose a new relative improvement of predicted CNN scores for guiding the self-taught learning process. Extensive experiments on PASCAL 2007 and 2012 show that our approach outperforms the state-of-the-arts, strongly validating its effectiveness.Comment: Accepted as spotlight paper by CVPR 201

Beyond pairwise strategy updating in the prisoner's dilemma game

In spatial games players typically alter their strategy by imitating the most successful or one randomly selected neighbor. Since a single neighbor is taken as reference, the information stemming from other neighbors is neglected, which begets the consideration of alternative, possibly more realistic approaches. Here we show that strategy changes inspired not only by the performance of individual neighbors but rather by entire neighborhoods introduce a qualitatively different evolutionary dynamics that is able to support the stable existence of very small cooperative clusters. This leads to phase diagrams that differ significantly from those obtained by means of pairwise strategy updating. In particular, the survivability of cooperators is possible even by high temptations to defect and over a much wider uncertainty range. We support the simulation results by means of pair approximations and analysis of spatial patterns, which jointly highlight the importance of local information for the resolution of social dilemmas.Comment: 9 two-column pages, 5 figures; accepted for publication in Scientific Report

A theoretical framework for demystifying the causes of dysfunction and disorder in the Chinese market economy: a Weberian perspective

This paper explores a theoretical framework for demystifying the causes of the dysfunction and disorder of the present Chinese market economy. It is posited that Max Weber’s classification of the two potentially conflicting ethics he associates with the behaviour of politicians, the ethic of conviction and the ethic of responsibility offers the basis for a more thorough and accurate account of the dysfunction and disorder within China’s current markets and political economy. Indeed, this paper contends that cultural determinism and neo-institutional economics fail to capture the contextual factors influencing the transition from the Maoist era of state control to contemporary China’s market led economy (following the opening-up of the country since 1978) than a wider reaching Weberian analysis of the contextual factors involved might achieve. This paper proposes that the distinct ethical foundation for the Chinese market economy is based upon the ethic of conviction, which is the continuity of the philosophical underpinnings of the national ideology during the Maoist era. In turn, this has led to the distortion of the incentives for firms in China to provide high-quality goods and services. This paper also conducts a study of the ethical foundations of the present Chinese economy from the comparative perspectives of Smith’s concept of the market economy and from a Confucian perspective. Through this comparative examination, it will be demonstrated that the ethical feature of the modern market economy, stemming from Smith and Confucianism, is based on the ethic of responsibility, which is a mutually opposed concept to the ethic of conviction; therefore, firms whose business ethics are founded upon the ethic of “responsibility” are less prone to deceive consumers as they adhere to a contractual “responsibility” towards the consumer that many Chinese firms still see as of secondary importance as the ethic of “conviction” still dominating the policies, society and culture of the centralist economic post-Maoist state. This paper further reveals that larger firms tend to have more corporate social responsibility due to their established branding effect, thus reflecting a more pervasive sense of the ethic of responsibility and vice versa for firms of a smaller size. This paper concludes with an economic model acting as a quantitative framework which further supports the theories proposed

Stiffness and vibration isolation characteristics of a torsional isolator with negative stiffness structure

This paper proposes a novel design torsional vibration isolator with negative stiffness structures. It consists of two shafts that are linked by positive springs and negative stiffness structures. The connection position of the two shafts has been designed into disc structure, which is the installation position of the positive springs and negative stiffness structures. The task of positive springs is to transmit the designed torque. In this paper, the nonlinear stiffness characteristics of the isolator are presented. The nonlinear mathematical model is presented, and its dynamic behaviors are investigated using the averaging method, and compared with that of the corresponding linear torsion isolator without negative stiffness structures. The study shows that the torsion isolator has a wider isolation region than that of the linear isolator. Furthermore, the performance of the isolator is sensitive to the damping of the system and the amplitude of vibration excitation. Choosing a suitable damping and vibration environment will be important for the stable application of this isolator