Attitude controller for reentry vehicles using state-dependent Riccati equation method

To get better tracking performance of attitude command over the reentry phase of vehicles, the use of state-dependent Riccati equation (SDRE) method for attitude controller design of reentry vehicles was investigated. Guidance commands are generated based on optimal guidance law. SDRE control method employs factorization of the nonlinear dynamics into a state vector and state dependent matrix valued function. State-dependent coefficients are derived based on reentry motion equations in pitch and yaw channels. Unlike constant weighting matrix Q, elements of Q are set as the functions of state error so as to get satisfactory feedback and eliminate state error rapidly, then formulation of SDRE is realized. Riccati equation is solved real-timely with Schur algorithm. State feedback control law u(x) is derived with linear quadratic regulator (LQR) method. Simulation results show that SDRE controller steadily tracks attitude command, and impact point error of reentry vehicle is acceptable. Compared with PID controller, tracking performance of attitude command using SDRE controller is better with smaller control surface deflection. The attitude tracking error with SDRE controller is within 5°, and the control deflection is within 30°.

Kant＇s Respect for the Law and Habermas＇s Redemption as a Source of Freedom？

As the title of this paper suggests, I intend to draw attention to what, in my opinion, lies at the core of the shared notion in both Kant and Habermas. This will be the concern of the first part of my paper. My focus will then shift, in the second part, to Habermas＇s views on freedom. In due time, however, as the provocative question mark in the title suggests, the notion of freedom becomes questionable. I will conclude by examining Frankfurt＇s notion of coercion in order to show that Habermas＇s notion of freedom is not only questionable but can, at times, be coercive. Throughout this paper, the reader shall be encouraged to see and possibly appreciate that there is a degree of similarity between the two thinkers. Shall the reader be hard put to gauge this similarity or shall the reader promptly appreciate it and take it into consideration？ I will argue--and demonstrate--that a certain amount of similarity can readily be drawn between the two. I will leave it up to the reader to decide whether this similarity is a forced similarity or whether this is a similarity that one perceives at a first glance and thus ought to consider. This paper could better be appreciated if the reader has reasonable knowledge of the Hegelian critique of Kant＇s Categorical Imperative.

A study of legal attributes of carbon emission rights in carbon trading

Clean Development Mechanism (CDM) has given birth to an international carbon trading market prosperity, which provides developing countries with valuable opportunity to address climate change issues right along with economic development and environmental improvement to achieve sustainable development. However, most studies of CDM focus on economics, and few on its legal problems. CDM involves too many aspects. And the clear legal attribute of trading object is the basis of progress of the transaction and also the start point of legal protection. Therefore, this paper in accordance with the inherent principle of property rights economics, and environmental economics in CDM, only discusses CDM carbon emission right legal interpretation and its attribution. The paper recommends that in order to ensure and promote the carbon emission right trading, carbon emission right should be attributed into the system of real rights to be regulated by Real Right Law. In this way, carbon emission right can gain exclusive power of possession and use, which can achieve a clear right def inition of environmental goods in line with Coase's theory to protect Chinese prof it in carbon trading market and promote the development of the carbon trading market further.

The Study of Legal Property of Household Registration System in Our Country

From ＂the case that three girls have some fate but have different value＂ to ＂the case that Hai Cheng took a police substation to court with three times＂, currently the household registration system of our country not only plays the role of account registration and account management, but also undertakes the limitation of migration movement, and for the additional functions of the lowest life guarantee, social insurance, compulsory education, employment and other social security benefits, it also makes a difference between local registered permanent residence habitant and nonlocal registered permanent residence habitant. Just because of these additional functions, the household registration system has become complicated, which originally has clear nature. Therefore, only it is necessary to define the legal nature of our country＇s current household registration system, can executive power be supervised and the rights of citizens get relief.

Behavioral Aspects in Obligatory Reports of Public Hospitals in Poland

The health care sector is the most difficult one to manage and control. Special units in this field are public hospitals which are required to prepare a lot of reports to various institutions, including the ownership body. The paper focuses on two issues. The first is the presence of behavioral factors in the reporting of public hospitals in Poland to the ownership bodies. This article aims to indicate the thematic areas of specific reports, most affected by behavioral factors and explain the causes and consequences of their occurrence. The second issue is the analysis of the legal status of obligatory reporting of public hospitals. Participants of the conducted research, due to their specific ownership and political and social position, were public hospitals in Poland. The paper uses the research methods of the meta-analysis of the literature, legal acts in Poland and empirical materials, and also the methods of synthesis, observation, and deduction. Data analysis focused on specific sample of reports issued by Polish public hospitals for their ownership body. The research shows that hospitals draw up a tremendous number of often thematically overlapping and redundant reports addressed to different institutions in different time periods. It is a consequence of legal regulations failing to streamline the reporting of the health care sector institutions, in particular public hospitals. The paper points to the large number of legal instruments that contain imprecise requirements resulting from the complex and obscure forms of control of public funds allocation in this sector. There are many behavioral factors that shape some fields of public hospitals＇ reports, for example, interpersonal relationships, egoism, private financial interests, strengthening of the employment status and professional position, and professional competences. There is considerable freedom in the reporting process fulfilled by public hospitals in Poland for their ownership body. It causes strong consequences, like poor-quality data, duplication of information, and its chaos, as well as high costs of obtaining information. Reporting system of financial and non-financial data of public hospitals in Poland is dysfunctional.

Optimal Filtering Correction forMarine Dynamical Positioning Control System

This paper focuses on the problem of control law optimization for marine vessels working in a dynamical positioning （DP） regime. The approach proposed here is based on the use of a special unified multipurpose control law structure constructed on the basis of nonlinear asymptotic observers, that allows the decoupling of a synthesis into simpler particular optimization problems. The primary reason for the observers is to restore deficient information concerning the unmeasured velocities of the vessel. Using a number of separate items in addition to the observers, it is possible to achieve desirable dynamical features of the closed loop connection. The most important feature is the so-called dynamical corrector, and this paper is therefore devoted to solving its optimal synthesis in marine vessels controlled by DP systems under the action of sea wave disturbances. The problem involves the need for minimal intensity of the control action determined by high frequency sea wave components. A specialized approach for designing the dynamical corrector is proposed and the applicability and effectiveness of the approach are illustrated using a practical example of underwater DP system synthesis.

Numerical Solution to Optimal Feedback Control by Dynamic Programming Approach:A Local Approximation Algorithm

This paper considers optimal feedback control for a general continuous time finite-dimensional deterministic system with finite horizon cost functional. A practically feasible algorithm to calculate the numerical solution of the optimal feedback control by dynamic programming approach is developed. The highlights of this algorithm are: a) It is based on a convergent constructive algorithm for optimal feedback control law which was proposed by the authors before through an approximation for the viscosity solution of the time-space discretization scheme developed by dynamic programming method; b) The computation complexity is significantly reduced since only values of viscosity solution on some local cones around the optimal trajectory are calculated. Two numerical experiments are presented to illustrate the effectiveness and fastness of the algorithm.

Environmental Justice in the Context of Scientific Uncertainty: On the Safety of Genetically Modified Organisms

A foremost issue of our time is our response to risks,especially those arising from scientific uncertainty,such as genetically modified organisms(GMOs).In this context,we need to achieve and maintain environmental justice.This should be based on the corresponding scientific research;essentially,however,it is a kind of social construct.We must maintain a free market mechanism for the development,application,and dissemination of modern technology,including genetically modified biotech and its products.At the same time,the necessary government intervention and legal regulation of the relevant science and technology should be put in place to ensure public safety and the interests of socially disadvantaged groups.

The Legal Regulation of Irrational Elements in the Operations of Boards of Directors

The operating processes of boards of directors are delicate and complex, so corporate legislation cannot simply equate board structure law with board governance law. It is therefore necessary to start from China＇s actual conditions and grasp the operating processes of Chinese boards with a sober appreciation of the irrational elements in their operating mechanisms. Board governance has entered a new stage of institutionalization, and the law should shift from its emphasis on structure to give equal attention to structure and process in optimizing institutional structure. In the construction of board operating mechanisms, we should treat differently such ＂living laws＂ as customs, experiences and traditions, give full play to the functionality of boards＇ strategic choices, and provide legal regulation of irrational elements, so as to distinguish between different roles, develop consensus, select strong points and improve efficiency. We should build control over board operational procedures, improve the system of functional allocation, correct assessment mechanisms, develop a mechanism for judicial scrutiny of the affective relationships in society and curb such behavioral tendencies as relational identity, structural bias and group polarization, with a view to controlling such ＂living laws＂ within the framework of the basic values and principles of board governance.

China＇s Choice of Analytical Models for Its Anti-Monopoly Law

Modem analytical models for anti-monopoly laws are a core element of the application of those laws. Since the Anti-Monopoly Law of the People＇s Republic of China was promulgated in 2008, law enforcement and judicial authorities have applied different analytical models, leading to divergent legal and regulatory outcomes as similar cases receive different verdicts. To select a suitable analytical model for China＇s Anti-Monopoly Law, we need to consider the possible contribution of both economic analysis and legal formalism and to learn from the mature systems and experience of foreign countries. It is also necessary to take into account such binding constraints as the current composition of China＇s anti-monopoly legal system, the ability of implementing agencies and the supply of economic analysis, in order to ensure complementarity between the analytical model chosen and the complexity of economic analysis and between the professionalism of implementing agencies and the cost of compliance for participants in economic activities. In terms of institutional design, the models should provide a considered explanation of the legislative aims of the law＇s provisions. It is necessary, therefore, to establish a processing model of behavioral classification that is based on China＇s national conditions, applies analytical models using normative comprehensive analysis, makes use of the distribution rule of burden of proof, improves supporting systems related to analytical models and enhances the ability of public authorities to implement the law.

Legal status changes in Chinese higher education institutions in the education system reform

During the past twenty years,higher education institutions in China have gained enormous rights due to both the streamlining of administration and the decentralization of the government.Their legal status has hence changed dramatically.However,the expansion of their rights has also brought about the possibility of higher education institutions profiting by pursuing development.The influence of the market has begun to permeate higher education institutions,and this change has shown some characteristics of induced institutional changes.Accordingly,higher education institutions should be regulated from the perspective of public law,so as to ensure their public nature.

Imitation and Transgression： Ge Fei＇s Creative Use of Jorge Luis Borges＇s Narrative Labyrinth

This paper attempts to trace the influence of Jorge Luis Borges on Ge Fei. It shows that Ge Fei＇s stories share Borges＇s narrative form though they do not have the same philosophical premises as Borges＇s to support them. What underlies Borges＇s narrative complexity is his notion of the inaccessibility of reality or divinity and his understanding of the human intellectual history as epistemological metaphors. While Borges＇s creation of narrative gap coincides with his intention of demonstrating the impossibility of the pursuit of knowledge and order, Ge Fei borrows this narrative technique from Borges to facilitate the inclusion of multiple motives and subject matters in one single story, which denotes various possible directions in which history, as well as story, may go. Borges prefers the Jungian concept of archetypal human actions and deeds, whereas Ge Fei tends to use the Freudian psychoanalysis to explore the laws governing human behaviors. But there is a perceivable connection between Ge Fei＇s rejection of linear history and traditional storyline with Borges＇ explication of epistemological uncertainty, hence the former＇s tremendous debt to the latter. Both writers have found the conventional narrative mode, which emphasizes the telling of a coherent story having a beginning, a middle, and an end, inadequate to convey their respective ideational intents.