Search Results - Yi Yu

The article deals with the state of business in the hospitality industry in China, domestic tourism, inbound tourism in China as entrepreneurial activity, outbound tourism from China to other countries. Hospitalityis one of the most important parts of thevast services market, and is a fast-growingan...

Full description

Traditional villages (TVs) and intangible cultural heritage (ICH) serve as dual carriers for the living transmission of agrarian civilization, with their spatial compatibility being crucial for the sustainable development of cultural ecosystems. Existing research shows deficiencies in quantitative a...

Full description

Given the exceptional capabilities of femtosecond laser processing in achieving high-precision ablation for air-film cooling hole fabrication on turbine blades, it is imperative to develop an advanced monitoring methodology that enables real-time feedback control to automatically terminate the laser...

Full description

Primary hepatic leiomyosarcoma (PHL) is an extremely rare malignant mesenchymal tumor, accounting for less than 2% of all primary hepatic malignancies. We report a case of a 46-year-old female who presented with a one-year history of abdominal distension and pain. Imaging revealed a 6×5×4 cm mass in...

Full description

Underwater visible light communication (UVLC) is of great interest to the military, industry, and the scientific community. In this paper, a long-distance UVLC system is designed, where the half power angle of light-emitting diode (LED) is narrowed to enhance the optical intensity at the transmitter...

Full description

ABSTRACT Background and Aims There is limited research on the clinical efficacy of electroacupuncture (EA) for sepsis‐induced acute gastrointestinal injury (S‐AGI). This study aimed to examine the effects of EA at “Zusanli” (ST36) and “Guanyuan” (RN4) on S‐AGI. Methods We identified 255 patients wit...

Full description

A multilayer modulation for peak-limited broadcast Poisson channel is designed and consists of three key elements: the transmitted symbol set, the users’ data space, and the data-to-symbol mapping. For energy-efficiency, the transmitted symbols are modulated by the square pulse amplitude...

Full description

Ubiquitous light-emitting diodes provide natural infrastructures for multiuser visible light communications (VLCs). However, the current available works for multiuser VLC systems mainly focus on broadcast scenarios and beamforming techniques. In this paper, we consider a multiuser multi-access VLC s...

Full description

Amid China’s “dual carbon” goals of achieving carbon peaking and carbon neutrality, understanding the spatial dynamics of carbon emissions is essential for promoting coordinated regional decarbonization. This study takes a systems perspective to investigate the drivers and network structures of carb...

Full description

ABSTRACT Background and Aims Delirium is a temporary cognitive dysfunction caused by organic factors. It is characterized by impaired attention and cognitive abilities. This condition is associated with a high prevalence of misdiagnosis and considerable risks of disability and mortality, particularl...

Full description

Faced with the challenge of transceiver design over the Poisson channel, we leverage the deep-learning technique and devise two novel end-to-end learning schemes to fulfill the design task in this paper. One of the schemes accords with the basic principle of the currently available autoencoder (AE)...

Full description

Hetao Plain, composed of hundreds of oases, is one of the most important grain-producing areas in China. Most crops, especially wheat and corn, depend on irrigation, thus water availability is a key issue for grain productivity on this land. The Yellow River is the main water source for irrigation a...

Full description

A fragment of ubiquitin fusion degradation protein (UFD) gene UFD1 was cloned from tomato by reverse transcription-polymerase chain reaction (RT-PCR), and its role in regulation of plant disease and stress resistance was analyzed employing virus-induced gene silencing (VIGS) technique. The results s...

Full description

In this paper, we construct the autoencoder (AE) for optical wireless communication (OWC) systems with non-negativity and peak power constraints, which provides effective transceiver design in log-normal channel. We consider the cases where perfect channel state information (CSI) or noisy CSI can be...

Full description

We propose a transceiver design method based on an autoencoder (AE) network for multi-color visible light communication (VLC) systems. Taking into account the chromaticity constraint described by MacAdam ellipses and the peak-value constraint of transmitted signals, the proposed AE network utilizes...

Full description

In visible light communication (VLC) systems for automotive applications, different kinds of traffic data with intended priority are usually demanded for transmission to meet an important requirement for both driving safety and the simplicity of a receiver, mainly due to a time urgency issue. For th...

Full description

Ubiquitous light emitting dioxides provide natural infrastructures for multiuser visible light communications (VLC). The current available works mainly focus on a potential assumption of the continuous signaling. In this paper, we consider a two-user multiaccess VLC system with finite-alphabet input...

Full description

In this paper, the design of linear full-diversity space code (FDSC) is considered for an intensity-modulated direct-detection multiple-input–multiple-output optical wireless communication (IM/DD MIMO-OWC) system, in which the channel suffers from log-normal fading and different links hav...

Full description

We investigate the intensity and phase response of optical switches based on a photonic crystal waveguide coupled to a nanocavity. In particular, we compare the performances of switches with traditional Lorentzian transmission spectrum to switches displaying an asymmetric Fano shape, as obtained by...

Full description

Strategies to control spoilage bacteria and biofilm formation are essential for minimizing food losses. Although Oleum ocimi gratissimi (OG) effectively preserves chill-stored fish, its specific inhibitory mechanisms against fish-derived spoilage bacteria remain unclear. This study investigated the...

Full description