To solve the problem that traditional trajectory prediction methods cannot meet the requirements of high-precision, multi-dimensional and real-time prediction, a 4D trajectory prediction model based on the backpropagation (BP) neural network was studied. First, the hierarchical clustering algorithm and the k-means clustering algorithm were adopted to analyze the total flight time. Then, cubic spline interpolation was used to interpolate the flight position to extract the main trajectory feature. The 4D trajectory prediction model was based on the BP neural network. It (...) was trained by Automatic Dependent Surveillance – Broadcast trajectory from Qingdao to Beijing and used to predict the flight trajectory at future moments. In this paper, the model is evaluated by the common measurement index such as maximum absolute error, mean absolute error and root mean square error. It also gives an analysis and comparison of the predicted over-point time, the predicted over-point altitude, the actual over-point time and the actual over-point altitude. The results indicate that the predicted 4D trajectory is close to the real flight data, and the time error at the crossing point is no more than 1 min and the altitude error at the crossing point is no more than 50 m, which is of high accuracy. (shrink)

With the rapid development of renewable generators such as distributed photovoltaic and profound changes of the power structure, this paper analyzes the frequency characteristics of the power system with high penetration of renewable generations in the process of low-frequency load shedding and discusses the influence of the distributed renewable generator frequency endurance capabilities on the implementation effect of low-frequency load shedding in detail. Finally, the influences of the distributed renewable generator frequency endurance capability and the capacities of the distributed renewable (...) generator on frequency response characteristics of an actual Hunan power grid are simulated. The simulation results show that more distributed photovoltaic capacity without frequency endurance capability leads to deeper frequency drops after the disturbance and requires more basic rounds of load shedding. When the penetration rate of distributed photovoltaic is too high, it may cause load shedding, resulting in power grid load losses and, at the same time, leading to an overshoot phenomenon in the process of frequency recovery. Therefore, the influence of distributed photovoltaic on the control of low-frequency load shedding should be considered when designing low-frequency load shedding schemes for the power grid with high penetration of distributed photovoltaic. (shrink)

The signals in numerous complex systems of engineering can be regarded as nonlinear parameter trend with noise which is identically distributed random signals or deterministic stationary chaotic signals. The commonly used methods for parameter estimation of nonlinear trend in signals are mainly based on least squares. It can cause inaccurate estimation results when the noise is complex. This paper proposes a calibration method for this issue in the case of single parameter via nonstationarity measure from the perspective of the stationarity (...) of residual sequence. Some numerical studies are conducted for validation. Results of numerical studies show that the proposed calibration method performs well for various models with different noise strengths and types and can significantly improve the accuracy of initial estimates obtained by least squares method. This is the first time that the nonstationarity measure is applied to the parameter calibration. All these results will be a guide for future studies of other parameter calibrations. (shrink)

Heideggerian philosophy is frequently chosen as a philosophical framing, and/or a hermeneutic analytical structure in qualitative nursing research. As Heideggerian philosophy is dense, there is merit in the development of scholarly resources that help to explain discrete Heideggerian concepts and to uncover their relevance to contemporary human experience. This paper uses a meta-synthesis methodology to pool and synthesise findings from 29 phenomenological research reports on Being-with in the nurse–patient relationship. We firstly considered and secured the most relevant Heideggerian elements to (...) nurse–patient Being-with. Under these deductive codes, we then inductively developed sub-themes that seemed to explain the multifaceted nature of Being-with, through a secondary analysis and synthesis of published data from 417 patient, carer and nurse participants. Dasein-with was enhanced when nurses had first-hand experience with a phenomenon. Nurses moved between the inauthentic they-mode, and the authentic self-mode. Through circumspection, technology and people were encountered environmentally feeding into nursing attention, assessment and communication. Nursing as a social arrangement was expressed through either leaping-in care or leaping-ahead care. There was a place for both inauthentic and authentic discourse that nurses wove through the ontic everydayness of nursing tasks. (shrink)

Anxious major depressive disorder is a common subtype of major depressive disorder; however, its unique neural mechanism is not well-understood currently. Using multimodal MRI data, this study examined common and specific alterations of amygdala subregions between patients with and without anxiety. No alterations were observed in the gray matter volume or intra-region functional integration in either patient group. Compared with the controls, both patient groups showed decreased functional connectivity between the left superficial amygdala and the left putamen, and between the (...) right superficial amygdala and the bilateral anterior cingulate cortex and medial orbitofrontal cortex, while only patients with anxiety exhibited decreased activity in the bilateral laterobasal and superficial amygdala. Moreover, the decreased activity correlated negatively with the Hamilton depression scale scores in the patients with anxiety. These findings provided insights into the pathophysiologic processes of anxious major depressive disorder and may help to develop new and effective treatment programs. (shrink)

This paper presents a bioinspired lower extremity exoskeleton robot. The proposed exoskeleton robot can be adjusted in structure to meet the wearer’s height of 150–185 cm and has a good gait stability. In the gait control part, a method of identifying different locomotion modes is proposed; five common locomotion modes are considered in this paper, including sitting down, standing up, level-ground walking, ascending stairs, and descending stairs. The identification is depended on angle information of the hip, knee, and ankle joints. (...) A deep locomotion mode identification model based on long-short term memory architecture is proposed in this paper for exploiting the angle data. We conducted two experiments to verify the effectiveness of the proposed method. Experimental results show that the DLMIM is capable of learning inherent characteristics of joint angles and achieves more accurate identification than the other models. The last experiment demonstrates that the DLMIM can recognize transitions between different locomotion modes in time and the real-time performance varies with each individual. (shrink)

Regulators have recently relaxed some provisions of the Global Research Analyst Settlement of 2003 and associated reforms, which arose from charges that conflicts of interest within investment banks had induced the issuance of fraudulent or otherwise misleading analyst research reports. We examine the effectiveness of the Global Settlement in reducing the systematic optimism observed in stock recommendations of analysts whose employer is a merger and acquisition advisor for the covered firm, by comparing the optimism exhibited in stock recommendations issued by (...) these analysts and by unaffiliated analysts before and after the Global Settlement. To control for the impact on analyst optimism of other time varying factors, our sample includes cases from the US and from other countries in which the Global Settlement had no direct impact. We argue that if the Global Settlement was effective, there should be a reduction in the relative optimism of affiliated analysts following this reform, and that reduction in the relative optimism should be greater for affiliated US analysts, than for affiliated analysts from non-US countries. When optimism is measured over a 180-day period surrounding the M&A announcement, we find a significantly greater reduction in US affiliated analysts’ optimism than occurs outside the US. However, evidence regarding analysts’ optimism in the 90-day period prior to the announcement of an M&A deal is mixed. (shrink)

This paper investigates whether and how the disclosure tone of earnings conference calls predicts future stock price crash risk. Using US public firms’ conference call transcripts from 2010 to 2015, we find that firms with less optimistic tone of year-end conference calls experience higher stock price crash risk in the following year. Additional analyses reveal that the predictive power of tone is more pronounced among firms with better information environment and lower managerial equity incentives, suggesting that extrinsic motivations for truthful (...) disclosure partially explain the predictive power of conference call tone. Our results shed light on the long-term information role of conference call tone by exploring the setting of extreme future downside risk, when managers have conflicting incentives either to unethically manipulate disclosure tone to hide bad news or to engage in ethical and truthful communication. (shrink)

Although the management and planning of water resources are extremely significant to human development, the complexity of implementation is unimaginable. To achieve this, the high-precision water consumption prediction is actually the key component of urban water optimization management system. Water consumption is usually affected by many factors, such as weather, economy, and water prices. If these impact factors are directly combined to predict water consumption, the weight of each perspective on the water consumption will be ignored, which will be greatly (...) detrimental to the prediction accuracy. Therefore, this paper proposes a deep neural network-based complex system for urban water management. The essence of it is to formulate a water consumption prediction model with the aid of principal component analysis and the integrated deep neural network, which is abbreviated as UWM-Id. The PCA classifies the factors affecting water consumption in the original data into three categories according to their correlation and inputs them into the neural network model. The results in the previous step are assigned weights and integrated into the form of fully connected layer. Finally, analyzing the sensitivity of the proposed UWM-Id and comparing its performance with a series of commonly used baseline methods for data mining, a large number of experiments have proved that UWM-Id has good performance and can be used for urban water management system. (shrink)

Brain imaging studies have consistently shown subgenual Anterior Cingulate Cortical (sgACC) involvement in emotion processing. COMT Val158 and Met158 polymorphisms may influence such emotional brain processes in specific ways. Given that resting-state fMRI (rsfMRI) may increase our understanding on brain functioning, we integrated genetic and rsfMRI data and focused on sgACC functional connections. No studies have yet investigated the influence of the COMT Val158Met polymorphism (rs4680) on sgACC resting-state functional connectivity (rsFC) in healthy individuals. A homogeneous group of sixty-one Caucasian (...) right-handed healthy female university students, all within the same age range, underwent rsfMRI. Compared to Met158 homozygotes, Val158 allele carriers displayed significantly stronger rsFC between the sgACC and the left parahippocampal gyrus, ventromedial parts of the inferior frontal gyrus, and the nucleus accumbens (NAc). On the other hand, compared to Val158 homozygotes, we found in Met158 allele carriers stronger sgACC rsFC with the medial frontal gyrus, more in particular the anterior parts of the medial orbitofrontal cortex. Although we did not use emotional or cognitive tasks, our sgACC rsFC results point to possible distinct differences in emotional and cognitive processes between Val158 and Met158 allele carriers. However, the exact nature of these directions remains to be determined. (shrink)

Remanufacturing widely exists in production activities. Two different game models are involved while considering reverse channels: In Model P, the manufacturer provides new and remanufactured products to two retailers. New products are sold through an online platform, while remanufactured products are sold in offline physical stores in a decentralized scenario. In Model C, the manufacturer provides new and remanufactured units to only one retailer that operates both online and offline channels in a centralized scenario. This research showed that a manufacturer’s (...) profitability and industry profits in Model P were higher than those in Model C from the perspective of economic performance; the sum of the profits of both retailers in Model P was worse than the profits of the retailer in Model C. Moreover, Model P was found to be greener than Model C from the perspective of environmental sustainability. From a social viewpoint, Model P had a higher consumer surplus than Model C; the higher the cost of distributing a remanufactured unit, the more disadvantageous the model to the consumers. (shrink)

Although empowering leadership is central to employees, leaders, and organizations, few studies have examined follower behavior and its role in incentivizing leaders to engage in empowering leadership. We use an exploratory, sequential mixed methods approach to explore comprehensively the influence of employee characteristics (i.e., work performance and ethical behavior) and leader-perceived threats on empowering leadership. We conducted two studies—the first entailed in-depth interviews of 24 managers from different industries to identify (i) the primary employee factors that determine empowering leadership and (...) (ii) the types of leader-perceived threats. The five employee factors and three leader-perceived threats identified lay the groundwork for the quantitative research in the second study. We used leader–member exchange theory and social dominance theory in analyzing data from 357 pairs of employee–supervisor questionnaires. The analysis confirmed the importance of employee ethical behavior (versus work performance) in predicting empowering leadership, and the crucial role of leader trust in connecting employee ethical behavior and work performance with empowering leadership. Leader-perceived power threats negatively influence empowering leadership and mitigate the positive impact of leader trust on empowering leadership. Thus, this study extends the literature’s perspective about empowering leadership to include ethical concerns and leader–member interaction. (shrink)

Laws in China relating to HIV disclosure are inconsistent. After a patient has tested HIV‐positive, service providers struggle to decide who should be informed first: patients, family members, or both. To understand service providers' attitudes and practices regarding the HIV notification process in China, 1101 service providers from a southwestern province of China were surveyed. Opinions were gathered from providers at five different levels of health care facilities (provincial, city, county, township and village). A mixed methods approach was used to (...) analyze perceptions of informing family members of a patient's HIV status. Quantitative analysis was used to examine whether providers held a favorable attitude toward notifying family members first and qualitative analysis was used to explore the reasons and consequences of notifying family members first. Nearly half of service providers felt family members should be informed of a patient's HIV status first. Providers who were older, had contact with HIV patients, or had less medical education were more likely to agree with a family‐first notification practice. Psychological pressure, concern about protecting family members, the need for family support, and consideration for local regulations were cited as the main reasons for this practice. There is an immediate need to re‐examine HIV notification policies so that there are consistent guidelines and procedures for providers throughout China. (shrink)

Truth-telling for terminally ill patients is a challenging ethical and social issue for Chinese health care professionals. However, despite the existence of ethical and moral standards for nurses, they frequently encounter moral dilemmas when making decisions about truth-telling to patients with end-stage diseases in China. This article aims to provide ethical strategies for clinical nurses in China regarding truth-telling decisions for terminally ill patients on the basis of their individual autonomy. This article first presents a common case scenario in China (...) and then critically discusses ethical issues related to ethical principles and philosophical theories. The aim is to provide the much needed strategy for truth-telling for nurses who are terminally ill rather than to focus on attitudes toward disclosure. This article focuses on nursing morality, ethics, norms, and philosophy in health care and discusses countermeasures taken by nurses in truth-telling decision-making in combination with Chinese Confucian culture. The analysis identifies key ethical strategies tailored to Chinese nurses’ practices, emphasizing individual autonomy, cultural sensitivity, and family dynamics in truth-telling decisions. The complexity of end-of-life illness requires Chinese nurses to strengthen the communication training needed to deliver bad news, as well as critical and autonomous thinking and good communication skills when implementing patient- and family-centered care, to achieve true delivery of bad news, thereby increasing patient autonomy and promoting more successful collaboration among patients, families, and providers. To improve the quality of care. Chinese nurses should integrate ethical principles with Confucian values to enhance patient-centered communication, respecting autonomy while adapting to cultural nuances in end-of-life care. (shrink)

本书独创性地将中国哲学的源头推前至前诸子时期, 作者认为上古时期中国古人的思维和观念就具有哲学思想的雏型. 春秋战国是中国古代大变革的时代, 儒、道、墨、法、名、阴阳等学派成立, 出现了我国古代第一个学术黄金时代, 为我国哲学奠定了基础. 从殷商至春秋战国, 天人关系成为思想领域中的首要问题, 形成像类、象等观念, 由此发展为阴阳、道、命、数、气等哲学理念. 全书还对中国哲学的发展脉络作了清晰的梳理.