A novel fault location method for a cross-bonded hv cable system based on sheath current monitoring

In order to improve the practice in the operation and maintenance of high voltage (HV) cables, this paper proposes a fault location method based on the monitoring of cable sheath currents for use in cross-bonded HV cable systems. This method first analyzes the power–frequency component of the sheath current, which can be acquired at cable terminals and cable link boxes, using a Fast Fourier Transform (FFT). The cable segment where a fault occurs can be localized by the phase difference between the sheath currents at the two ends of the cable segment, because current would flow in the opposite direction towards the two ends of the cable segment with fault. Conversely, in other healthy cable segments of the same circuit, sheath currents would flow in the same direction. The exact fault position can then be located via electromagnetic time reversal (EMTR) analysis of the fault transients of the sheath current. The sheath currents have been simulated and analyzed by assuming a single-phase short-circuit fault to occur in every cable segment of a selected cross-bonded high voltage cable circuit. The sheath current monitoring system has been implemented in a 110 kV cable circuit in China. Results indicate that the proposed method is feasible and effective in location of HV cable short circuit faults

Reduction in the Number of Fault Injections for Blind Fault Attack on SPN Block Ciphers

In 2014, a new fault analysis called blind fault attack (BFA) was proposed, in which attackers can only obtain the number of different faulty outputs without knowing the public data. The original BFA requires 480,000 fault injections to recover a 128-bit AES key. This work attempts to reduce the number of fault injections under the same attack assumptions. We analyze BFA from an information theoretical perspective and introduce a new probability-based distinguisher. Three approaches are proposed for different attack scenarios. The best one realized a 66.8% reduction of the number of fault injections on AES

University graduates' employability: Bringing entrepreneurial intention into the equation

Nowadays in China, more and more university graduates do not match the competencies required by the job market and there is not enough knowledge about the explanatory models of graduate employability in China, especially when entrepreneurial dimension is considered. This is the research motivation of this thesis which deploys two empirical studies to offer an answer. The first study is qualitative and intended to understand how university graduation stakeholders evaluate the learning process and outcomes experienced as preparedness to work and adaptation facility in the specific Chinese context. This study provided information to design a mediated moderated model intended to identify predictors as well as the interaction with entrepreneurial intention. This second study is quantitative and tests the model with a sample of 366 recently employed graduates. Findings show that the successful outcomes of higher education always depend simultaneously on a series of factors, that is, the individual assets comprising adaptability and proactive personality, social assets comprising horizontal collectivism and social capital and organizational assets comprising real-world activities and perceived organizational support which contribute to the employability of the students. The key psychological factor is self-efficacy which is a great facilitator to self-motivate. Entrepreneurial intention was found to be a moderator that changes this process in relating self-efficacy to employability. This thesis aims to help designing curricula and drawing attention so as to increase employability of graduates in the Chinese context.Atualmente, na China, cada vez mais diplomados universitários não correspondem às competências exigidas pelo mercado de trabalho e não existe conhecimento suficiente sobre os modelos explicativos da empregabilidade dos diplomados na China, especialmente quando se considera a dimensão empresarial. Esta é a motivação de investigação desta tese que desenvolve dois estudos empíricos para dar resposta. O primeiro estudo é qualitativo e destina-se a compreender como os stakeholders do ensino universitário avaliam o processo de aprendizagem e os resultados, tidos como o grau de preparação para o trabalho e a facilidade de adaptação, no contexto chinês específico. Este estudo forneceu informação para conceber um modelo mediado moderado destinado a identificar os preditores, bem como a interacção com a intenção empreendedora. Este segundo estudo é quantitativo e testa o modelo com uma amostra de 366 licenciados recentemente empregados. As conclusões mostram que a empregabilidade depende sempre simultaneamente de uma série de factores, ou seja, os ativos individuais que compreendem a adaptabilidade e a personalidade proactiva, os ativos sociais que compreendem o coletivismo horizontal e o capital social e os ativos organizacionais que compreendem as atividades do mundo real e o apoio organizacional percebido que contribuem para a empregabilidade dos estudantes. O fator psicológico have é a auto-eficácia, que é um grande facilitador da auto-motivação. Verificou-se que a intenção empresarial é um moderador que altera este processo na relação entre a auto-eficácia e a empregabilidade. Esta tese tem como objetivo ajudar a conceber currículos e chamar a atenção de modo a aumentar a empregabilidade dos licenciados no contexto chinês

On the Translation of Publicity Texts Under Semantic Translation and Communicative Translation Theory

The publicity texts involve various aspects in external publicity and plays an increasingly important role. This paper takes Xi Jinping’s report at the 19th National Congress of the Communist Party of China as an example to discuss the practical application of Newmark’s semantic translation and communicative translation theory in the translation of publicity texts. It is summarized that how semantic translation and communicative translation are used in the English translation of publicity texts in this paper so as to provide some practicable suggestions for the English translation of publicity texts

Noisy Label Processing for Classification: A Survey

In recent years, deep neural networks (DNNs) have gained remarkable achievement in computer vision tasks, and the success of DNNs often depends greatly on the richness of data. However, the acquisition process of data and high-quality ground truth requires a lot of manpower and money. In the long, tedious process of data annotation, annotators are prone to make mistakes, resulting in incorrect labels of images, i.e., noisy labels. The emergence of noisy labels is inevitable. Moreover, since research shows that DNNs can easily fit noisy labels, the existence of noisy labels will cause significant damage to the model training process. Therefore, it is crucial to combat noisy labels for computer vision tasks, especially for classification tasks. In this survey, we first comprehensively review the evolution of different deep learning approaches for noisy label combating in the image classification task. In addition, we also review different noise patterns that have been proposed to design robust algorithms. Furthermore, we explore the inner pattern of real-world label noise and propose an algorithm to generate a synthetic label noise pattern guided by real-world data. We test the algorithm on the well-known real-world dataset CIFAR-10N to form a new real-world data-guided synthetic benchmark and evaluate some typical noise-robust methods on the benchmark

Study on the Transmission of Chinese Culture From the Perspective of Big Translation

This paper analyzes and studies the transmission of Chinese culture from the the perspective of Big Translation. Through analyzing the contents of Big translation   and the practical application of Big Translation in the transmission of Chinese culture, we find intralingual translation, interlingual translation and intersemiotic translation all play important roles in the process of cultural transmission. The purpose of this paper is to study how to spread Chinese culture effectively. With various examples, it is concluded that big translation is an important way to promote the effective spread of Chinese culture. We should attach importance to big translation and use it to promote cross-cultural communication and cultural transmission