203 research outputs found
An urban morphology repair towards cultural sustainability: take Hongkou District in Shanghai as an example
Ecological performance evaluation methods in urban existing community regeneration: a comprehensive review
A Study on the Current Situation and Educational Strategies of Parents' Emotional Coping Styles of 3-6 Year Old Children
The pre-school stage is a critical period for young children's emotional development. During this stage, children gradually learn to express their emotions, understand the emotions of others, and acquire the ability toregulate their emotions appropriately. As the first mentors in a child's life, the importance of what parents do to cope with their toddler's mood swings is a form of potential emotional education.In this study, questionnaires and interviews were used to investigate parents' coping styles in dealing with the five emotions of excitement, pride, sadness, fear, and anger in 3-6 year old toddlers and to explore corresponding educational strategies. The results of the study show that young children's emotions are usually in a variety of situations and have many triggering factors. Moreover, parents usually tend to adopt more supportive coping methods in their lives
A Simple Framework for Multi-mode Spatial-Temporal Data Modeling
Spatial-temporal data modeling aims to mine the underlying spatial
relationships and temporal dependencies of objects in a system. However, most
existing methods focus on the modeling of spatial-temporal data in a single
mode, lacking the understanding of multiple modes. Though very few methods have
been presented to learn the multi-mode relationships recently, they are built
on complicated components with higher model complexities. In this paper, we
propose a simple framework for multi-mode spatial-temporal data modeling to
bring both effectiveness and efficiency together. Specifically, we design a
general cross-mode spatial relationships learning component to adaptively
establish connections between multiple modes and propagate information along
the learned connections. Moreover, we employ multi-layer perceptrons to capture
the temporal dependencies and channel correlations, which are conceptually and
technically succinct. Experiments on three real-world datasets show that our
model can consistently outperform the baselines with lower space and time
complexity, opening up a promising direction for modeling spatial-temporal
data. The generalizability of the cross-mode spatial relationships learning
module is also validated
MemMap: An Adaptive and Latent Memory Structure for Dynamic Graph Learning
Dynamic graph learning has attracted much attention in recent years due to the fact that most of the real-world graphs are dynamic and evolutionary. As a result, many dynamic learning methods have been proposed to cope with the changes of node states over time. Among these studies, a critical issue is how to update the representations of nodes when new temporal events are observed. In this paper, we provide a novel memory structure - Memory Map (MemMap) for this problem. MemMap is an adaptive and evolutionary latent memory space, where each cell corresponds to an evolving topic of the dynamic graph. Moreover, the representation of a node is generated from its semantically correlated memory cells, rather than linked neighbors of the node. We have conducted experiments on real-world datasets and compared our method with the SOTA ones. It can be concluded that: 1) By constructing an adaptive and evolving memory structure during the dynamic learning process, our method can capture the dynamic graph changes, and the learned MemMap is actually a compact evolving structure organized according to the latent topics of the graph nodes. 2) Our research suggests that it is a more effective and efficient way to generate node representations from a latent semantic space (like MemMap in our method) than from directly connected neighbors (like most of the previous graph learning methods). The reason is that the number of memory cells in latent space could be much smaller than the number of nodes in a real-world graph, and the representation learning process could well balance the global and local message passing by leveraging the semantic similarity of graph nodes via the correlated memory cells
Coffee: Cost-Effective Edge Caching for 360 Degree Live Video Streaming
While live 360 degree video streaming delivers immersive viewing experience,
it poses significant bandwidth and latency challenges for content delivery
networks. Edge servers are expected to play an important role in facilitating
live streaming of 360 degree videos. In this paper, we propose a novel
predictive edge caching algorithm (Coffee) for live 360 degree video that
employ collaborative FoV prediction and predictive tile prefetching to reduce
bandwidth consumption, streaming cost and improve the streaming quality and
robustness. Our light-weight caching algorithms exploit the unique tile
consumption patterns of live 360 degree video streaming to achieve high tile
caching gains. Through extensive experiments driven by real 360 degree video
streaming traces, we demonstrate that edge caching algorithms specifically
designed for live 360 degree video streaming can achieve high streaming cost
savings with small edge cache space consumption. Coffee, guided by viewer FoV
predictions, significantly reduces back-haul traffic up to 76% compared to
state-of-the-art edge caching algorithms. Furthermore, we develop a
transcoding-aware variant (TransCoffee) and evaluate it using comprehensive
experiments, which demonstrate that TransCoffee can achieve 63\% lower cost
compared to state-of-the-art transcoding-aware approaches
Continuous-Time Graph Learning for Cascade Popularity Prediction
Information propagation on social networks could be modeled as cascades, and
many efforts have been made to predict the future popularity of cascades.
However, most of the existing research treats a cascade as an individual
sequence. Actually, the cascades might be correlated with each other due to the
shared users or similar topics. Moreover, the preferences of users and
semantics of a cascade are usually continuously evolving over time. In this
paper, we propose a continuous-time graph learning method for cascade
popularity prediction, which first connects different cascades via a universal
sequence of user-cascade and user-user interactions and then chronologically
learns on the sequence by maintaining the dynamic states of users and cascades.
Specifically, for each interaction, we present an evolution learning module to
continuously update the dynamic states of the related users and cascade based
on their currently encoded messages and previous dynamic states. We also devise
a cascade representation learning component to embed the temporal information
and structural information carried by the cascade. Experiments on real-world
datasets demonstrate the superiority and rationality of our approach.Comment: 9 pages, 5 figures, IJCAI 202
Methylcap-Seq Reveals Novel DNA Methylation Markers for the Diagnosis and Recurrence Prediction of Bladder Cancer in a Chinese Population
PURPOSE: There is a need to supplement or supplant the conventional diagnostic tools, namely, cystoscopy and B-type ultrasound, for bladder cancer (BC). We aimed to identify novel DNA methylation markers for BC through genome-wide profiling of BC cell lines and subsequent methylation-specific PCR (MSP) screening of clinical urine samples. EXPERIMENTAL DESIGN: The methyl-DNA binding domain (MBD) capture technique, methylCap/seq, was performed to screen for specific hypermethylated CpG islands in two BC cell lines (5637 and T24). The top one hundred hypermethylated targets were sequentially screened by MSP in urine samples to gradually narrow the target number and optimize the composition of the diagnostic panel. The diagnostic performance of the obtained panel was evaluated in different clinical scenarios. RESULTS: A total of 1,627 hypermethylated promoter targets in the BC cell lines was identified by Illumina sequencing. The top 104 hypermethylated targets were reduced to eight genes (VAX1, KCNV1, ECEL1, TMEM26, TAL1, PROX1, SLC6A20, and LMX1A) after the urine DNA screening in a small sample size of 8 normal control and 18 BC subjects. Validation in an independent sample of 212 BC patients enabled the optimization of five methylation targets, including VAX1, KCNV1, TAL1, PPOX1, and CFTR, which was obtained in our previous study, for BC diagnosis with a sensitivity and specificity of 88.68% and 87.25%, respectively. In addition, the methylation of VAX1 and LMX1A was found to be associated with BC recurrence. CONCLUSIONS: We identified a promising diagnostic marker panel for early non-invasive detection and subsequent BC surveillance
TNRC18 engages H3K9me3 to mediate silencing of endogenous retrotransposons
Trimethylation of histone H3 lysine 9 (H3K9me3) is crucial for the regulation of gene repression and heterochromatin formation, cell-fate determination and organismal development1. H3K9me3 also provides an essential mechanism for silencing transposable elements1,2,3,4. However, previous studies have shown that canonical H3K9me3 readers (for example, HP1 (refs. 5,6,7,8,9) and MPP8 (refs. 10,11,12)) have limited roles in silencing endogenous retroviruses (ERVs), one of the main transposable element classes in the mammalian genome13. Here we report that trinucleotide-repeat-containing 18 (TNRC18), a poorly understood chromatin regulator, recognizes H3K9me3 to mediate the silencing of ERV class I (ERV1) elements such as LTR12 (ref. 14). Biochemical, biophysical and structural studies identified the carboxy-terminal bromo-adjacent homology (BAH) domain of TNRC18 (TNRC18(BAH)) as an H3K9me3-specific reader. Moreover, the amino-terminal segment of TNRC18 is a platform for the direct recruitment of co-repressors such as HDAC–Sin3–NCoR complexes, thus enforcing optimal repression of the H3K9me3-demarcated ERVs. Point mutagenesis that disrupts the TNRC18(BAH)-mediated H3K9me3 engagement caused neonatal death in mice and, in multiple mammalian cell models, led to derepressed expression of ERVs, which affected the landscape of cis-regulatory elements and, therefore, gene-expression programmes. Collectively, we describe a new H3K9me3-sensing and regulatory pathway that operates to epigenetically silence evolutionarily young ERVs and exert substantial effects on host genome integrity, transcriptomic regulation, immunity and development
Primary gastric non-Hodgkin's lymphoma in Chinese patients: clinical characteristics and prognostic factors
<p>Abstract</p> <p>Background</p> <p>Optimal management and outcome of primary gastric lymphoma (PGL) have not been well defined in the rituximab era. This study aimed to analyze the clinical characteristics, prognostic factors, and roles of different treatment modalities in Chinese patients with PGL.</p> <p>Methods</p> <p>The clinicopathological features of 83 Chinese patients with PGL were retrospectively reviewed. Staging was performed according to the Lugano staging system for gastrointestinal non-Hodgkin's lymphoma.</p> <p>Results</p> <p>The predominant pathologic subtype among Chinese patients with PGL in our study was diffuse large B cell lymphoma (DLBCL), followed by mucosa-associated lymphoid tissue (MALT) lymphoma. Among the 57 patients with gastric DLBCL, 20 patients (35.1%) were classified as the germinal center B cell-like (GCB) subtype and 37 patients (64.9%) as the non-GCB subtype. The 83 patients had a five-year overall survival (OS) and event-free survival (EFS) of 52% and 59%, respectively. Cox regression analysis showed that stage-modified international prognostic index (IPI) and performance status (PS) were independent predictors of survival. In the 67 B-cell lymphoma patients who received chemotherapy, 36 patients treated with rituximab (at least 3 cycles) had a mean OS of 72 months (95% CI 62-81) versus 62 months (95% CI 47-76) for patients without rituximab treatment (P = 0.021).</p> <p>Conclusion</p> <p>The proportion of Chinese gastric DLBCL cases with non-GCB subtype was higher than the GCB subtype. Stage-modified IPI and PS were effective prognostic factors in Chinese patients with PGL. Our data suggested that primary gastric B-cell lymphoma might have an improved outcome with rituximab in addition to chemotherapy. More studies are necessary, preferentially large prospective randomized clinical trials to obtain more information on the impact of the rituximab in the primary gastric B-cell lymphoma.</p
- …
