Fuzzy algorithm-based fault analysis for automated production lines

In this paper, an in-depth analysis of automated production line faults based on fuzzy algorithms is carried out and based on an in-depth investigation of the mechanism of equipment faults, research work on equipment state prediction and production line fault diagnosis is carried out, and the corresponding algorithm model workflow is given, which has some practical application value for improving the accuracy of production line fault prediction. The algorithm with data mining association rules is proposed to extract the confidence parameters of the conditional state fuzzy net model, and an inverse conditional state fuzzy net is established based on the conditional state fuzzy net for fault diagnosis and reasoning, and a dynamic confidence level reasoning mechanism is also established for reverse reasoning based on the iterative algorithm of maximum algebra. To monitor the operating status of the production line more intuitively, a production line fault prediction and analysis system is developed based on the platform, which mainly includes a data management module, state monitoring module, state prediction module, fault diagnosis module, and maintenance advice module, which can more easily realize the monitoring of the production line equipment state and fault early warning prompting, making the system more practical value.

Sensor and Actuator Intrusion Detection for Cyber-Physical Systems via Adaptive Estimation Algorithm

In this work, a new approach to detect sensor and actuator intrusion for Cyber-Physical Systems using a bank of Kalman filters is presented. The case where the unknown type of the intrusion signal is considered first, using two Kalman filters in a bank to provide the conditional state estimates, then the unknown type of intrusion signal can be detected properly via the adaptive estimation algorithm. The case where the target (either sensor or actuator) of the intrusion signal is unknown is also considered, using four Kalman filters in a bank designed to detect if the intrusion signal is about to affect healthy sensor or actuator signal. To test these methods, a DC motor speed control system subject to attack by different types of sensor and actuator signals is simulated. Simulations show that different types of sensor and actuator intrusion signals can be detected properly without the knowledge of the nature and the type of these signals.

Alliance Building among Environmental Nongovernmental Organizations in China: The Emergence and Evolution of the Zero Waste Alliance

Despite the Chinese state’s long-standing wariness of strong horizontal linkages among nongovernment organizations (NGOs) and a deteriorating political climate for civil society activism, cross-regional alliances among NGOs have become a persistent phenomenon in recent years. This article draws on the case of the Zero Waste Alliance—a nationwide coalition of environmental NGOs engaged in waste-related matters—to identify structural conditions that encouraged its emergence and illuminate how alliance builders have interpreted their environment. The article argues that developments internal to the environmental NGO sector (an increased need to pool scarce resources and professional knowledge, a stronger inclination to collaborate among a new generation of NGO leaders, and the formation of epistemic communities), combined with conditional state lenience, have propelled activists to embark on a strategy of alliance building. This case illustrates how the perceived boundary of the permissible shifts when structural conditions incentivize entrepreneurial activists to explore new strategies, and these attempts do not provoke repressive responses. It also highlights that the state has remained conditionally tolerant of boundary-pushing NGO behavior in a sector aligning with its interests, while strengthening political control over civil society.

A State Affair?: Notions of the State in Discourses on Trans Rights in Sweden

Departing from previous scholarly work that has studied the effects of state violence and conditional state recognition on the living conditions of gender-variant people (Beauchamp 2019; Linander 2018), this chapter explores the function of narratives of the state in discourses on trans rights in Sweden. It provides insights into the relation between state and civil society, and the practicalities of governance, through an examination of how activists interpellate the state and hold it accountable. With a critical inquiry into the hegemonic narrative that the Swedish state has a responsibility to alleviate the suffering of gender-variant citizens as a background, it addresses and situates the tension between liberal rights discourses of trans rights on the one hand and transformative politics asking for restorative justice on the other hand (Spade 2011). The argument is that the interpellation of the state can be understood as a strategy to repoliticise the violent effects of governance in times of neoliberalism.

Evaluation of the Uniform Conditional State Method for Turbulence-Chemistry Interaction Modelling of Swirl-Stabilized Flames

This paper considers a variation on Conditional Moment Closure (CMC) modelling for turbulence-chemistry interaction called the Uniform Conditional State (UCS) model and its application to the prediction of swirl-stabilized flames. UCS is essentially a zero-spatial dimensional, multi-condition CMC method. Unlike conventional CMC methods, for flames that are in (statistically) steady flows, the chemistry can be solved a priori in conditional space only. The reactive scalars are then mapped into real space by taking the inner product of the resulting conditional averages with the joint probability density function of the conditioning variables, here taken to have a presumed form that is a function of the mean and variance of the conditioning variables. Two conditioning variables are used, mixture fraction and progress variable. The combination of these allows for the resulting chemistry table to be applicable to both premixed and non-premixed combustion but also in the partially-premixed regime. In doing so, this new approach is promising to be highly suitable for simulating industrial applications and complex geometries. Another promising aspect is the universal applicability to different fuels and kinetic mechanisms providing great flexibility to the user of this method. Ultimately it is intended to aid the development of industrial burners by providing detailed information about the local composition and emission production, while keeping computational costs significantly low. Not only does this provide additional insight into global emissions and fuel consumption of a new design, but it allows for variability between different stages of mixedness as well as the testing of, for example, alternative fuels in established burner configurations. In this present study a comparison of different fuels and initial conditions is being conducted to analyze their effect on the resulting UCS solution — meaning the chemical source-terms, composition and thermodynamic state in conditional space. Furthermore the use of the UCS solutions as a predictive method in a RANS simulation is being presented here. The paper illustrates the UCS predictions and compares them to experimental data, as well as previously published simulation results of more established modelling approaches. The experimental test case chosen is a model combustor with a swirl-stabilized flame and high technical relevance which demonstrates the applicability of the UCS method to industrial designs for aero engines. Further investigations have begun including the application of this new tool to a real industrial combustor within the framework of this collaboration with MTU Aero Engines AG.

Coherent state truncation by conditional interferometry

Based on a conditional interferometry proposed by Paris [Phys. Rev. A 62, 033813 (2000)], we prepare any chosen superposition of the vacuum, one-photon, and two-photon states, which is truncating from an input coherent state. Feeding two perfect single-photon states and a coherent state into the interferometry and employing two one-photon detections, the conditional state can be obtained in the signal port. Ideal and realistic features of the one-photon counting are taken into account together with the effect on the fidelity between the ideal state and the realistic case. The ideal state is just a particular case of the realistic state with the unit efficiency. We study the antibunching effect and Wigner function of the generated states. The results show that the generated states will exhibit their specular character.

Beyond Resilience

Studies of queer and trans suffering, resilience, care, and vitalities are invariably also investigations into the difficult and painful articulations of lives that feel worth living and deaths that feel okay dying. The notion of resiliency, referring to a conditional state of overcoming difficult situations, neglects to fully encompass our understandings of risk, vulnerability, and life. This article explores the ways in which Washington, DC–based trans activists discuss shared coalitional labor as constituting that which renders viable life—or, in some cases, what they describe as deaths worth dying—in a contemporary moment that is distinctly violent. While health researchers have long noted the beneficial role that a coalition serves in better representing needs in research, this article focuses on how individuals meet their needs not through solitary and normative resilience strategies but within and through spaces of coalitional action. This approach to radical care and viable life encourages us to rethink how a necropolitics of trans life—lives marked as morally suspect and intrinsically disposable—coexists with a notion of trans vitalities that this article develops. Ultimately, embracing the concept of trans vitalities is not simply a refusal or disavowal of projects of normalization or the commodifiability of trans rights but, rather, a vigilance toward the violently homogenizing expectations of the heterogeneity of lived experience.