2,378 research outputs found
Intelligent Laparoscopic Assistant Robot through Surgery Task Model: How to Give Intelligence to Medical Robots
Towards Neural Decoding of Imagined Speech based on Spoken Speech
Decoding imagined speech from human brain signals is a challenging and
important issue that may enable human communication via brain signals. While
imagined speech can be the paradigm for silent communication via brain signals,
it is always hard to collect enough stable data to train the decoding model.
Meanwhile, spoken speech data is relatively easy and to obtain, implying the
significance of utilizing spoken speech brain signals to decode imagined
speech. In this paper, we performed a preliminary analysis to find out whether
if it would be possible to utilize spoken speech electroencephalography data to
decode imagined speech, by simply applying the pre-trained model trained with
spoken speech brain signals to decode imagined speech. While the classification
performance of imagined speech data solely used to train and validation was
30.5 %, the transferred performance of spoken speech based classifier to
imagined speech data displayed average accuracy of 26.8 % which did not have
statistically significant difference compared to the imagined speech based
classifier (p = 0.0983, chi-square = 4.64). For more comprehensive analysis, we
compared the result with the visual imagery dataset, which would naturally be
less related to spoken speech compared to the imagined speech. As a result,
visual imagery have shown solely trained performance of 31.8 % and transferred
performance of 26.3 % which had shown statistically significant difference
between each other (p = 0.022, chi-square = 7.64). Our results imply the
potential of applying spoken speech to decode imagined speech, as well as their
underlying common features.Comment: 4 pages, 2 figure
Temporal Collaboration in Delivery Service Considering Defective Rate
In recent years, the COVID-19 problem has accelerated the growth of e-commerce to new enterprises, product categories, and customer segments. The e-commerce
industry’s rapid expansion has resulted in an increase in parcel quantities. As a result of
this growth, delivery companies are becoming more competitive, capturing market growth.
This study proposes a temporal-collaboration model to overcome the intense competition.
Moreover, there are cases of unforeseen accidents during the delivery processes such as
loss, physical damage, or delay of delivery due to retainment of shipment in customs,
which in turn may quickly reflect the delivery company reputation and reliability of its
services. In order to maximize profit for each allied company, a mathematical model
for network design is developed. Based on a co-operative game theory, a fair allocation
method of coalition profit is also proposed. An example problem is used to demonstrate
the applicability of the collaboration model
Proteomic analysis of the extraembryonic tissues from cloned porcine fetus at day 35 of pregnancy
Papillary Thyroid Carcinoma of a Diffuse Sclerosing Variant: Ultrasonographic Monitoring from a Normal Thyroid Gland to Mass Formation
A diffuse sclerosing variant of papillary thyroid carcinoma is uncommon and has a tendency for rapid growth and a higher incidence of cervical lymph node metastases. We experienced a case of a diffuse sclerosing variant of papillary thyroid carcinoma in a 48-year-old man. This case showed benign features on initial ultrasonography and positron emission tomography (PET) scan. A new nodule was detected on follow-up ultrasonography that showed rapid enlargement. This case was confirmed by surgical excision. We herein describe the initial and follow-up ultrasonographic findings of a diffuse sclerosing variant of papillary thyroid carcinoma
Dectin-1 signaling coordinates innate and adaptive immunity for potent host defense against viral infection
BackgroundMost commercial foot-and-mouth disease (FMD) vaccines have various disadvantages, such as low antibody titers, short-lived effects, compromised host defense, and questionable safety.ObjectivesTo address these shortcomings, we present a novel FMD vaccine containing Dectin-1 agonist, β-D-glucan, as an immunomodulatory adjuvant. The proposed vaccine was developed to effectively coordinate innate and adaptive immunity for potent host defense against viral infection.MethodsWe demonstrated β-D-glucan mediated innate and adaptive immune responses in mice and pigs in vitro and in vivo. The expressions of pattern recognition receptors, cytokines, transcription factors, and co-stimulatory molecules were promoted via FMD vaccine containing β-D-glucan.Resultsβ-D-glucan elicited a robust cellular immune response and early, mid-, and long-term immunity. Moreover, it exhibited potent host defense by modulating host’s innate and adaptive immunity.ConclusionOur study provides a promising approach to overcoming the limitations of conventional FMD vaccines. Based on the proposed vaccine’s safety and efficacy, it represents a breakthrough among next-generation FMD vaccines
Diode Laser—Can It Replace the Electrical Current Used in Endoscopic Submucosal Dissection?
Background/Aims A new medical fiber-guided diode laser system (FDLS) is expected to offer high-precision cutting with simultaneous hemostasis. Thus, this study aimed to evaluate the feasibility of using the 1,940-nm FDLS to perform endoscopic submucosal dissection (ESD) in the gastrointestinal tract of an animal model. Methods In this prospective animal pilot study, gastric and colorectal ESD using the FDLS was performed in ex vivo and in vivo porcine models. The completeness of en bloc resection, the procedure time, intraprocedural bleeding, histological injuries to the muscularis propria (MP) layer, and perforation were assessed. Results The en bloc resection and perforation rates in the ex vivo study were 100% (10/10) and 10% (1/10), respectively; those in the in vivo study were 100% (4/4) and 0% for gastric ESD and 100% (4/4) and 25% (1/4) for rectal ESD, respectively. Deep MP layer injuries tended to occur more frequently in the rectal than in the gastric ESD cases, and no intraprocedural bleeding occurred in either group. Conclusions The 1,940-nm FDLS was capable of yielding high en bloc resection rates without intraprocedural bleeding during gastric and colorectal ESD in animal models
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