The Inversion

This paper investigates the impact of word embedding techniques on enhancing SMS spam detection models. Traditional statistical methods (BoW, TF-IDF) are compared with advanced techniques (Word2Vec, fastText, GloVe, PhoBERT) using a proprietary dataset.

5p viengfa 28-10-2024 1 1   Download

In this report, we examine the unsteady Stokes equations with nonhomogeneous boundary conditions. As an application of a Carleman estimate, we first establish log type stabilities for the solution of the equations from either an interior measurement of the velocity, or a boundary observation depending on the trace of the velocity and of the Cauchy stress tensor measurements on a part of the boundary.

16p vibecca 01-10-2024 2 1   Download

Although Cryptococcal infection is worldwide distribution, it is more seen in the immunocompromised patients. Cryptococcus neoformans is the most common central neurvous system fungal pathogen in HIV infected patients. In this paper we present an immunocompromised HIV infected case of C. neoformans meningitis with clinical features and imaging characteristics by MR image.

4p vifaye 20-09-2024 8 1   Download

In this article, we introduce the application of 3D - FLAIR sequence without contrast enhancement on detecting abnormalities of cranial nerve pathology by presenting two cases, acute vestibular neuritis and facial nerve palsy. We suggest that 3D - FLAIR is the relatively useful sequence in detecting cranial nerve pathologies.

5p vinatisu 29-08-2024 3 0   Download

The main aims of this research are: To determine the phase inversion temperatures for the formation of oil-in-brine nanoemulsions at various salt concentrations using conductivity measurements; To prepare the nano-emulsions at PIT points, and study their stability by measuring their droplet size, polydispersity and size distribution using dynamic light scattering technique; To confirm the DLS results using Cryo-SEM technique;...

324p runthenight07 01-03-2023 7 4   Download

This study focuses on the stability of nano-emulsions produced by phase inversion temperature method using n-Decane and n-Dodecane as the dispersed phase and pure water/brine as the aqueous phase (continuous phase). A non-ionic surfactant (Brij 30) was used in the preparation of the nano-emulsions. Three different types salt namely \(NaCl\), \(KCl\) and \(MgC{l_2}\) were used at different concentrations.

173p runthenight07 01-03-2023 4 3   Download

Đề tài "Phát triển ứng dụng hội thoại thông minh tư vấn trong lĩnh vực xuất nhập khẩu" nghiên cứu xây dựng một mô hình hội thoại cho tiếng Việt tư vấn trong lĩnh vực xuất nhập khẩu. Mô hình hội thoại mà Tôi đề xuất là kết hợp giữa mạng nơ-ron LSTM và phương pháp tìm câu trả lời trong các tài liệu dựa trên kỹ thuật term frequency – inverse document frequency (TF-IDF). Mô hình đã cho kết quả rất tính cực, có thể giải quyết được những vấn đề cơ bản về ngữ nghĩa, ngữ cảnh và tính cách riêng trong hệ thống đối thoại.

56p matroinho2510 08-11-2022 15 7   Download

NW Iran-SE Turkey is a tectonically active zone related to the Arabia-Eurasia convergence, but the active stress state in this zone has not yet been clearly studied. To improve the knowledge of present-day stress state in this region, optimum reduced stress tensor was analysed. For this, a large number of earthquake focal mechanisms (277) were collected. The analyses show most mechanisms exhibit strike-slip to thrust faulting. These data indicate that this region is dominated by an N158° maximum horizontal compressive stress (SHmax) belonging to a transpressional tectonic regime.

21p tanmocphong 29-01-2022 38 1   Download

The investigation of magnetic field strength variations over subterranean layers may reveal their locations on Earth’s surface and provide physical and geometrical characteristics. Magnetic studies were carried out around Gölcük caldera lake using proton magnetometers to identify subsurface volcanic structures. The acquired data were inverted using four different edge detection algorithms such as analytic signal, tilt angle, theta map, horizontal gradient. Afterwards, the results were used to determine the locations of the anomalous structures.

17p tanmocphong 29-01-2022 14 1   Download

Gravity data inversion or interpretation requires the removal of the gravitational effects of the a priori known geologic and/or morphologic features within the Earth’s system to model and reveal the remaining signals of the unknown anomalous subsurface density distributions. The Bouguer gravity anomalies reduced by the normal gravitational field of the Earth and the gravitational attraction of the topographic masses above the sea level are frequently used in geophysics for this purpose.

12p tanmocphong 29-01-2022 8 0   Download

The numerical wedge splitting tests show that in the case of brittle materials, the lower post-failure stress limit defined in the concrete damaged plasticity model resulted in energy consumption for crack propagation exceeding the defined fracture energy (114% higher in the case of a brittleness number of 4.4).

9p guernsey 28-12-2021 12 0   Download

The study is aimed at the following goals: To find out kinds of errors made by the tenth-grade students of English at Nguyen Viet Xuan High School in the academic year of 2019/2020 in using inversions.To find out the main errors in the use of inversions most often made by the students of English in grade 10 at Nguyen Viet Xuan High School in the academic year of 2019/2020. To find out the causes of the errors in the use of inversions made by the tenth-grade students of English at Nguyen Viet Xuan High School in the academic year of 2019/2020.

57p caphesuadathemmuoi 11-11-2021 13 1   Download

Bài viết này đề xuất giải pháp nhằm tăng tốc tìm kiếm tài nguyên học tập theo nội dung dựa trên các kỹ thuật xử lý dữ liệu lớn. Cụ thể, các kỹ thuật xử lý văn bản được sử dụng trên nền tảng Hadoop như tách từ tiếng Việt, loại bỏ từ dừng, tính trọng số TF-IDF (Term Frequency-Inverse Document Frequency), biểu diễn văn bản thành dạng không gian vectơ, tính độ tương đồng cosine để đo mức độ tương tự của các từ khóa trong tài liệu nhằm trả về tài liệu có độ tương đồng cao nhất.

8p visteveballmer 06-11-2021 36 1   Download

Research purposes: We consider some inverse source problems for parabolic equations, focus on three topics: First, we give stability estimates. Second, we propose regularization methods to solve these problems. Third, we set up algorithms and give numerical examples to illustrate the performance of the proposed regularization methods in this thesis.

26p prisonbreak123 21-05-2021 23 4   Download

Research purpose: to build an analytical model representing the cross Kerr nonlinear coefficient of a four-energy quantum system in the inverse Y configuration in the presence of the Doppler effect. Apply the analytical results to the case of 87Rb at room temperature. Studying the ability to control and enhance the cross Kerr nonlinearity according to the parameters of the associated laser field and the temperature of the environment.

26p prisonbreak123 21-05-2021 17 4   Download

Mục tiêu nghiên cứu của đề tài là xây dựng chi tiết các hệ thức tính bề rộng rã nhánh ei - ejγ trong hai mô hình MSS và ISS; so sánh được kết quả giải tích gần đúng và chính xác thông qua khảo sát số. Mời các bạn cùng tham khảo nội dung chi tiết.

60p capheviahe28 01-03-2021 25 4   Download

In this paper, source is considered as a single equivalent dipole and genetic algorithm, an efficient and robust optimization method, is proposed to estimate parameters of source. Some improvements are introduced to enhance performance of conventional genetic algorithm.

12p larachdumlanat127 20-12-2020 13 1   Download

Inversion is one of the factors contributing to the structure and grammar variety of a piece of academic writing; however, as can be seen from the results academic writing tests at Thai Nguyen University of Education (TUE), English majors rarely employ different inversion structures.

9p vivirginia2711 10-12-2020 35 3   Download

In this article we present a complete classification for the parametric surfaces of bidegree (1, 2) over the real field. We also provide some results for the inverse problem: given a segment of a line or twisted cubic curve, we look for a patch (1, 2) which includes this segment as a subset of its singular locus.

15p tamynhan8 04-11-2020 6 2   Download

Convolution inequalities and inverse problems play an important role in mathematical analysis. This paper studies inverse inequalities for the Fourier cosine convolution and the backward heat problem.

12p tamynhan8 04-11-2020 10 1   Download