237 research outputs found
The correspondence between the canonical and semicanonical bases
Given any symmetric Cartan datum, Lusztig has provided a pair of key lemmas
to construct the perverse sheaves over the corresponding quiver and the
functions of irreducible components over the corresponding preprojective
algebra respectively. In the present article, we prove that these two inductive
algorithms of Lusztig coincide. Consequently we can define two colored graphs
and prove that they are isomorhic. This result finishes the statement that
Lusztig's functions of irreducible components are basis of the enveloping
algebra and deduces the crystal structure (in the sense of Kashiwara-Saito)
from the semicanonical basis directly inside Lusztig's convolution algebra of
the preprojective algebra. As an application, we prove that the transition
matrix between the canonical basis and the semicanonical basis is upper
triangular with all diagonal entries equal to 1
Sheaf realization of Bridgeland's Hall algebra of Dynkin type
As one of results in [6], Bridgeland realized the quantum group
via the localization of Ringel-Hall algebra for
two-periodic projective complexes of quiver representations over a finite
field. In the present paper, we generalize Lusztig's categorical construction
and (dual) canonical basis for the nilpotent part
to Bridgeland's Hall algebra of Dynkin type, and
obtain a perverse sheaf realization of global basis for Bridgeland's localizing
algebra. In particular, we prove that the dual of canonical basis elements are
part of our basis up to powers of .Comment: In the new version, we add some content including: in section 6, we
refine our construction and complete the perverse sheaves realization of
Bridgeland's Hall algebra which is essentially isomorphic to the integral
form of the whole quantum group; in section 7, we obtain new results about
the global basis; in section 8, we compare our basis with Lusztig's (dual)
canonical basi
Examining Inter-Consistency of Large Language Models Collaboration: An In-depth Analysis via Debate
Large Language Models (LLMs) have shown impressive capabilities in various
applications, but they still face various inconsistency issues. Existing works
primarily focus on the inconsistency issues within a single LLM, while we
complementarily explore the inter-consistency among multiple LLMs for
collaboration. To examine whether LLMs can collaborate effectively to achieve a
consensus for a shared goal, we focus on commonsense reasoning, and introduce a
formal debate framework (FORD) to conduct a three-stage debate among LLMs with
real-world scenarios alignment: fair debate, mismatched debate, and roundtable
debate. Through extensive experiments on various datasets, LLMs can effectively
collaborate to reach a consensus despite noticeable inter-inconsistencies, but
imbalances in their abilities can lead to domination by superior LLMs.
Leveraging a more advanced LLM like GPT-4 as an authoritative judge can boost
collaboration performance. Our work contributes to understanding the
inter-consistency among LLMs and lays the foundation for developing future
collaboration methods. Codes and data are available at
https://github.com/Waste-Wood/FORDComment: EMNLP 2023 Findings Camera Ready Versio
Thermal conductivity, structure and mechanical properties of konjac glucomannan/starch based aerogel strengthened by wheat straw
This study presents the preparation and property characterization of a konjac glucomannan (KGM)/starch based aerogel as a thermal insulation material. Wheat straw powders (a kind of agricultural waste) and starch are used to enhance aerogel physical properties such as mechanical strength and pore size distribution. Aerogel samples were made using environmentally friendly sol–gel and freeze drying methods. Results show that starch addition could strengthen the mechanical strength of aerogel significantly, and wheat straw addition could decrease aerogel pore size due to its special micron-cavity structure, with appropriate gelatin addition as the stabilizer. The aerogel formula was optimized to achieve lowest thermal conductivity and good thermal stability. Within the experimental range, aerogel with the optimized formula had a thermal conductivity 0.04641 Wm−1 K−1, a compression modulus 67.5 kPa and an elasticity 0.27. The results demonstrate the high potential of KGM/starch based aerogels enhanced with wheat straw for application in thermal insulation
Embedding Security into Ferroelectric FET Array via In-Situ Memory Operation
Non-volatile memories (NVMs) have the potential to reshape next-generation
memory systems because of their promising properties of near-zero leakage power
consumption, high density and non-volatility. However, NVMs also face critical
security threats that exploit the non-volatile property. Compared to volatile
memory, the capability of retaining data even after power down makes NVM more
vulnerable. Existing solutions to address the security issues of NVMs are
mainly based on Advanced Encryption Standard (AES), which incurs significant
performance and power overhead. In this paper, we propose a lightweight memory
encryption/decryption scheme by exploiting in-situ memory operations with
negligible overhead. To validate the feasibility of the encryption/decryption
scheme, device-level and array-level experiments are performed using
ferroelectric field effect transistor (FeFET) as an example NVM without loss of
generality. Besides, a comprehensive evaluation is performed on a 128x128 FeFET
AND-type memory array in terms of area, latency, power and throughput. Compared
with the AES-based scheme, our scheme shows around 22.6x/14.1x increase in
encryption/decryption throughput with negligible power penalty. Furthermore, we
evaluate the performance of our scheme over the AES-based scheme when deploying
different neural network workloads. Our scheme yields significant latency
reduction by 90% on average for encryption and decryption processes
KMT2A promotes melanoma cell growth by targeting hTERT signaling pathway.
Melanoma is an aggressive cutaneous malignancy, illuminating the exact mechanisms and finding novel therapeutic targets are urgently needed. In this study, we identified KMT2A as a potential target, which promoted the growth of human melanoma cells. KMT2A knockdown significantly inhibited cell viability and cell migration and induced apoptosis, whereas KMT2A overexpression effectively promoted cell proliferation in various melanoma cell lines. Further study showed that KMT2A regulated melanoma cell growth by targeting the hTERT-dependent signal pathway. Knockdown of KMT2A markedly inhibited the promoter activity and expression of hTERT, and hTERT overexpression rescued the viability inhibition caused by KMT2A knockdown. Moreover, KMT2A knockdown suppressed tumorsphere formation and the expression of cancer stem cell markers, which was also reversed by hTERT overexpression. In addition, the results from a xenograft mouse model confirmed that KMT2A promoted melanoma growth via hTERT signaling. Finally, analyses of clinical samples demonstrated that the expression of KMT2A and hTERT were positively correlated in melanoma tumor tissues, and KMT2A high expression predicted poor prognosis in melanoma patients. Collectively, our results indicate that KMT2A promotes melanoma growth by activating the hTERT signaling, suggesting that the KMT2A/hTERT signaling pathway may be a potential therapeutic target for melanoma
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