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Collaborative Filtering Recommender System for Stock recommendation
No full text주식 추천을 위한 협업 필터링 추천 시스템이 개시된다. 주식 추천 모델 학습 방법은, 고객의 포트폴리오를 기초로 상기 고객의 주식 아이템에 대한 선호도를 추정하는 단계; 상기 포트폴리오에 대한 위험도와 기대수익을 추정하는 단계; 및 상기 선호도 및 상기 위험도와 상기 기대수익을 기초로 주식 추천을 위한 협업 필터링 모델을 학습하는 단계를 포함한다
Method and Apparatus for Tracking Physical Location of Cellular Device in Practical Environment
No full text실제환경에서 이동통신 단말의 물리적 위치 추적 방법 및 장치가 제시된다. 일 실시예에 따른 컴퓨터 장치에 의해 수행되는 실제환경에서 이동통신 단말의 물리적 위치 추적 방법은, 위치 추적 대상인 단말이 인지할 수 없는 패킷을 복수 개 발생시켜 특정 트래픽 패턴을 형성하는 단계; 및 상기 특정 트래픽 패턴 기반의 핑거프린팅(fingerprinting)을 실시해 상기 단말의 RNTI(Radio Network Temporary Identifier)를 트래킹하는 단계를 포함하고, 상기 단말의 RNTI를 이용하여 물리적 위치를 추적할 수 있다
MEMBER FOR GAS SENSOR BASED METAL OXIDE NANOFIBER FUNCTIONALIZED WITH EXSOLUTION METAL NANOPARTICLE CATALYST USING ULTRA FAST PHOTOTHERMAL EFFECT, GAS SENSOR USING THE MEMBER AND MANUFACTURING METHOD OF THE MEMBER
No full text본 발명은 가스센서용 부재, 이를 이용한 가스센서 및 그 제조방법에 관한 것으로써, 구체적으로는 금속산화물 및 금속 전구체가 포함된 고분자 나노섬유를 일차적으로 합성하고, 고온 산화열처리 과정을 통해 지지체 역할을 하는 고분자 산화물을 열분해하여 제거시키고, 금속산화물 전구체를 산화하여 금속이 도핑된 금속산화물 나노섬유를 합성한 뒤, 추후 급속광열처리를 통해 엑솔루션 금속나노입자 촉매가 기능화된 소재를 이용한 가스센서용 부재, 가스센서 및 그 제조방법에 관한 것이다. 본 발명은 특히, 기존의 장기간의 고온 및 환원가스 열처리가 필요한 엑솔루션 공정의 한계점을 극복하여 급속광열처리를 활용하여 손쉽게 엑솔루션 금속나노입자 촉매를 기능화할 수 있으며, 이렇게 합성된 금속나노입자 촉매가 기능화된 1 차원의 금속산화물 나노섬유는 매우 넓은 비표면적 및 기공구조, 그리고 매우 안정하게 활성화된 촉매특성을 바탕으로 극소량의 가스를 매우 높은 감도로 검출해 낼 수 있으며 동시에 장기적으로도 안정한 감도특성을 가져 효과적인 가스센서용 부재, 가스센서 및 그 제조방법을 개시 할 수 있는 효과를 갖는다
A Novel Hybrid Ureteroscope Tracking for Robotic-Assisted Retrograde Intrarenal Surgery via Recognition of Pathway With Lumen Identification
No full textResolving disorientation of the surgeon caused by wrong recognition of scope's position, which often increases procedural time and workload, remains a significant challenge in robotic-assisted retrograde intrarenal surgery (RIRS). This letter introduces a novel hybrid ureteroscope tracking algorithm that integrates low-latency lumen identification with robotic motion data to enhance intrarenal navigation. The system estimates the ureteroscope's position on the centerline of the kidney by recognizing its pathway. In validation tests using a 3D-printed phantom, the proposed method achieved an average localization success rate of 89.2% for major calyx entry and 84.1% for minor calyx entry, with an average computation time of 0.26 seconds, ensuring low-latency operation. Usability testing with ten novice participants demonstrated a 44.5% reduction in cognitive workload (NASA-TLX), improved task success rates, and reduced manipulation effort. These results indicate that the proposed tracking algorithm significantly enhances ureteroscope navigation, improving efficiency and reducing the surgeon's cognitive load in robotic-assisted RIRS.
Compulsory education enhances financial inclusion across socioeconomic groups: a global analysis
No full textIn this study, we investigate the role of compulsory education in enhancing financial inclusion across various sociodemographic groups, with a focus on age, gender, and income level. Using data from 160 countries, we employ an instrumental variable model incorporating expected years of schooling and the human rights index to determine the minimum education level necessary for effective financial participation. Our findings reveal that while compulsory education generally promotes financial inclusion, the extent of its impact varies among different socioeconomic groups. For high-income classes, lower levels of education suffice, but other groups require at least an upper-secondary education to benefit significantly. This research highlights the importance of tailored educational policies in reducing financial barriers and fostering inclusive economic participation, particularly for women and socially marginalized individuals. The study contributes to the strategic development of education programs aimed at achieving broader financial inclusion, which is especially pertinent in the wake of economic disruptions caused by the COVID-19 pandemic.
Transforming non-conventional yeasts into key players in biotechnology: advances in synthetic biology applications
No full textNon-conventional yeasts exhibit exceptional genetic and functional diversity, serving as a largely untapped repertoire for biotechnological applications. Beyond the conventional yeast Saccharomyces cerevisiae, non-conventional yeasts are naturally more multifaceted, possessing the ability to utilize renewable and low-cost carbon sources while exhibiting robust physiology under challenging conditions. However, their vast potential remains largely unexplored, encompassing both challenges and opportunities for biotechnological advancements. Over the past decade, technological advancements in synthetic biology have unlocked new opportunities to harness their potential and overcome inherent limitations, enabling the full exploitation of their advantages across a broad spectrum of applications. In this review, we highlight recent advances in the synthetic biology of non-conventional yeasts, focusing on the development of new genetic building blocks (e.g., promoters and terminators), genome editing tools, and metabolic pathway engineering. Through these technologies, non-conventional yeasts are poised to emerge as pivotal next-generation workhorses tailored for specific applications in sustainable biomanufacturing, accelerating the transition to a bio-based economy.
A top-down insular cortex circuit crucial for non-nociceptive fear learning
No full textUnderstanding how threats drive fear memory formation is crucial to understanding how organisms adapt to environments and treat threat-related disorders such as PTSD. While traditional Pavlovian conditioning studies have provided valuable insights, the exclusive reliance on electric shock as a threat stimulus has limited our understanding of diverse threats. To address this, we developed a conditioning paradigm using a looming visual stimulus as an unconditioned stimulus (US) in mice and identified a distinct neural circuit for visual threat conditioning. Parabrachial CGRP neurons were necessary for both conditioning and memory retrieval. Upstream neurons in the posterior insular cortex (pIC) responded to looming stimuli, and their projections to the parabrachial nucleus (PBN) induced aversive states and drove conditioning. However, this pIC-to-PBN pathway was not required for foot-shock conditioning. These findings reveal how non-nociceptive visual stimuli can drive aversive states and fear memory formation, expanding our understanding of aversive US processing beyond traditional models.
Proving the Weak Gravity Conjecture in perturbative string theory. Part I. The bosonic string
No full textWe present a complete proof of the Weak Gravity Conjecture in any perturbative bosonic string theory in spacetime dimension D >= 6. Our proof works by relating the black hole extremality bound to long range forces, which are more easily calculated on the worldsheet, closing the gaps in partial arguments in the existing literature. We simultaneously establish a strict, sublattice form of the conjecture in the same class of theories. We close by discussing the scope and limitations of our analysis, along with possible extensions including an upcoming generalization of our work to the superstring.
