bluuebunny/crossref_metadata_2025 huggingface dataset:
Point Cloud Approach For Modelling The Lost Volume of The Fillaboa Bridge Cutwater
Authors: Balado Frias Jesus , Sánchez-Rodríguez Ana
Published: April 2022

The digitization of heritage is being rapidly realised in many parts of the world, thanks to LiDAR technology. In addition to the simple digital preservation of heritage, 3D acquisition makes it possible to monitor the structural condition and assess possible damage. This paper presents a method for modelling the lost volume of a heritage bridge. The selected case study is the Fillaboa bridge in Salvaterra de Miño, Spain, which has two cutwaters with the same cutting angle, one of which is damaged and has a stone loss. The bridge was acquired with a Terrestrial Laser Scanner. The method consists of the following processes. First, the walls of the whole cutwater are segmented and aligned by the Iterative Closest Point algorithm over the damaged cutwater. Second, the distance between the two point clouds is calculated, and the damaged area is delimited in both point clouds. And third, the alpha-shape algorithm is applied to model the point cloud of the damaged area on a polygon. By searching for the optimal alpha radius, the polygon that best fits the damaged volume is generated. The proposed method also allows digital reconstruction of the damaged area, although it is sensitive to acquisition problems, which require manual interventions in the processing. The accuracy of the method is mainly dependent on the acquired point cloud registration (with an RMS error of 60mm) and the ICP registration error (31mm). Its use is limited to the existence of two geometries that allow superposition: one in good condition and one damaged to compare.
Targetless Coregistration of Terrestrial Laser Scanning Point Clouds Using a Multi Surrounding Scan Image-Based Technique
Authors: Alsadik Bashar
Published: April 2022

The coregistration of terrestrial laser point clouds is widely investigated where different techniques are presented to solve this problem. The techniques are divided either as target-based or targetless approaches for coarse and fine coregistration. The targetless approach is more challenging since no physical reference targets are placed in the field during the scanning. Mainly, targetless methods are image-based and they are applied through projecting the point clouds back to the scanning stations. The projected 360 point cloud images are normally in the form of panoramic images utilizing either intensity or RGB values, and an image matching is followed to align the scan stations together. However, the point cloud coregistration is still a challenge since ICP like methods are applicable for fine registration. Furthermore, image-based approaches are restricted when there is: a limited overlap between point clouds, no RGB data accompanied to intensity values, and unstructured scanned objects in the point clouds. Therefore, we present in this paper the concept of a multi surrounding scan MSS image-based approach to overcome the difficulty to register point clouds in challenging cases. The multi surrounding scan approach means to create multi-perspective images per laser scan point cloud. These multi-perspective images will offer different viewpoints per scan station to overcome the viewpoint distortion that causes the failure of the image matching in challenging situations. Two experimental tests are applied using point clouds collected in Enschede city and the published 3D toolkit data set in Bremen city. The experiments showed a successful coregistration approach even in challenging settings with different constellations.
Vigorous 3D Angular Resection Model Using Levenberg – Marquardt Method
Authors: Mustafa Yaseen
Published: April 2022

The resection in 3D space is a common problem in surveying engineering and photogrammetry based on observed distances, angles, and coordinates. This resection problem is nonlinear and comprises redundant observations which is normally solved using the least-squares method in an iterative approach. In this paper, we introduce a vigorous angular based resection method that converges to the global minimum even with very challenging starting values of the unknowns. The method is based on deriving oblique angles from the measured horizontal and vertical angles by solving spherical triangles. The derived oblique angles tightly connected the rays enclosed between the resection point and the reference points. Both techniques of the nonlinear least square adjustment either using the Gauss-Newton or Levenberg – Marquardt are applied in two 3D resection experiments. In both numerical methods, the results converged steadily to the global minimum using the proposed angular resection even with improper starting values. However, applying the Levenberg – Marquardt method proved to reach the global minimum solution in all the challenging situations and outperformed the Gauss-Newton method.
Cắt đầu tụy tá tràng nội soi: Báo cáo 11 trường hợp
Authors: Ho Van Linh
Published: April 2022

TÓM TẮT

Mục tiêu: Nghiên cứu đặc điểm tổn thương ung thư quanh bóng Vater và đặc điểm kỹ thuật của phẫu thuật cắt đầu tụy - tá tràng nội soi.

Phương pháp: Gồm 11 bệnh nhân được phẫu thuật cắt đầu tụy tá tràng nội soi tại Bệnh viện Trung ương Huế từ 01-2018 đến 11- 2021.

Kết quả: Tuổi trung bình: 53,7 ± 9,5 (30 – 78). Nam/nữ = 8/3. Chỉ số khối cơ thể ở mức gầy 54,5% và mức bình thường 45,5% bệnh nhân. Khối u bóng Vater chiếm đa số 81,8%, u tá tràng 9,1% và u đoạn cuối ống mật chủ 9,1%; Ống mật chủ giãn 90,9%, ống tụy giãn 72,7%. Kích thước khối U ˂ 2 cm: 36,4%, 2 ≤ U ˂ 3 cm: 54,5% và U ≤ 4 cm: 9,1%. Sử dụng 5 trocar thường quy, tỷ lệ vét hạch từ 7 -14 hạch chiếm phần lớn 81,8%. Tai biến chảy máu trong phẫu thuật 27,3% và tử vong 18,2%.

Kết luận: U bóng Vater và kích thước dưới 3 cm thường được lựa chọn cho phẫu thuật nội soi cắt đầu tụy tá tràng. Nạo vét hạch hệ thống cũng thực hiện được tốt như trong mổ mở. Ít đau sau phẫu thuật và thời gian nằm viện ngắn.

ABSTRACT

LAPAROSCOPIC PANCREATICODUODENECTOMY: 11 CASES REPORTED

Objective: This study aims to explore the characteristics of periampullary cancer and laparoscopic pancreaticoduodenectomy procedure.

Methods: We prospectively examined data of 11 patients who underwent laparoscopic pancreaticoduodenectomy at Hue Central Hospital from november, 2018 to november, 2021.

Results: The mean age was 53.7 ± 9.5 years (30 – 78) and the male/Female ratio was 8:3. The Body mass index of patients was 54.5% and normal level was 45.5%.patients with ampulla of Vater cancers accounted for 81.8% and duodenal tumor accounted for 9.1% and distal common bile duct tumor accounted for 9.1%. Dilatation of the common bile duct was 90.9% and the pancreatic duct was 72.7%. There were 36,4% the tumor size less than 2 cm and from 2 - 3 cm was 54.5% and less than 4 cm was 9.1%. We were always used in 5 trocars and the dissection lymphadenectomy ratio from 7-14 lymph nodes accounted for 81.8%. Bleeding complications during surgery was 27.3% and death was 18.2% patients.

Conclusion: The ampulla of Vater and tumor size less than 3 cm was often selected for laparoscopic pancreaticoduodenectomy. Dissection lymphadenectomy also performed well. Less pain after pancreaticoduodenectomy surgery and short hospital stay times.
Đặc điểm lâm sàng và X-quang răng cối lớn thứ hai hàm dưới có hệ thống ống tủy hình chữ C
Authors: Nguyen Hong Loi
Published: April 2022

TÓM TẮT

Đặt vấn đề: Sự phức tạp, đa dạng của hệ thống ống tủy với nhiều biến thể, một trong số đó phải kể đến hệ thống ống tủy hình chữ C. Phim cắt lớp vi tính chùm tia hình nón được ứng dụng ngày càng rộng rãi trong Nha khoa và thể hiện tính ưu việt của mình trong ứng dụng nghiên cứu hệ thống ống tủy và điều trị nội nha.

Phương pháp nghiên cứu: Nghiên cứu được thực hiện ở 25 bệnh nhân với 32 răng cối lớn thứ hai hàm dưới có ống tủy hình chữ C được chẩn đoán viêm tủy không hồi phục đến khám và điều trị tại khoa Nha Tổng Quát-Trung tâm Răng Hàm Mặt- Bệnh viện Trung Ương Huế từ tháng 5/2020 đến tháng 5/2021. Nghiên cứu cắt ngang mô tả.

Kết quả: Vị trí lỗ sâu gặp nhiều nhất là ở mặt xa là 20 răng chiếm tỉ lệ 62,6%. Trong số 20 răng sâu mặt xa có 15 răng sâu do răng cối lớn thứ ba hàm dưới mọc chiếm tỷ lệ 46,9%. Triệu chứng lâm sàng hay gặp nhất là đau, chiếm tỉ lệ 75%. Răng có 2 ống tủy gặp với tỉ lệ cao nhất, chiếm 50%. Phần lớn 21/32 răng, chiếm tỷ lệ 65,6%) ống tủy hình C có dạng dải cong liên tục (C1) ở phần ba cổ. Trong đó có 2/21 răng (9,5%) có 1 ống xuyên suốt chiều dài, còn lại phân tách thành 2, 3 ống tủy ở các phần ba giữa và chóp.

Kết Luận: Ống tủy hình chữ C có dạng dài cong liên tục (C1) ở phần ba cổ hay gặp nhất. Phim cắt lớp chùm tia hình nón nhiều tính ưu việt trong ứng dụng nghiên cứu hệ thống ống tủy.

ABSTRACT

C-SHAPED ROOT CANALS OF MANDIBULAR SECOND MOLARS: CLINICAL CHARATERISTICS AND CONE BEAM COMPUTED TOMOGRAPHY STUDY

Introduction: the root canal system of the mandibular second molar is diverse and complex with many variations, especially C-shaped root canal system. Cone-beam computed tomography film is widely applied in dentistry and demonstrates its superiority in the application of root canal system research and endodontic treatment.

Methods: The study was carried out in 25 patients with 32 mandibular second molars with C-shaped canals diagnosed with irreversible pulpitis who came for examination and treatment at the Department of General Dentistry, Odonto-Stomatology Center, Hue Central Hospital from May 2020 to May 2021. Study design: Descriptive cross-sectiomal study.

Results: The most common site of caries was in the distal surface with 20 teeth, accounting for 62,6%. Among 20 distal caries, there were 15 caries caused by mandibular third molars (46,9%). The most frequent clinical symptom was pain, accounting for 75%. Teeth with 2 root canals are encountered with the highest rate, accounting for 50%. The most frequent configuration in the coronal third was C1, accounting for 65.6%. Of which, 2/21 teeth (9.5%) have 1 canal throughout the length, the rest split into 2, 3 canals in the middle and apical thirds.

Conclusions: The most common C-shaped canal system in mandibular second molars were the C1 form. Conebeam CT film has many advantages in the application of root canal system research.
Đánh giá đặc điểm sự cố y khoa tại Bệnh viện Trung ương Huế năm 2021
Authors: Mai Xuan Hao
Published: April 2022

TÓM TẮT

Đặt vấn đề: Sự cố y khoa là các tình huống không mong muốn xảy ra trong quá trình chẩn đoán, chăm sóc và điều trị do các yếu tố khách quan, chủ quan mà không phải do diễn biến bệnh lý hoặc cơ địa người bệnh, tác động sức khỏe, tính mạng của người bệnh. Là một trong những vấn đề đáng lo ngại nhất trong quá trình cung ứng loại hình dịch vụ chăm sóc sức khỏe an toàn cho người bệnh/khách hàng. Đề tài này nhằm mục tiêu mô tả đặc điểm sự cố y khoa tại Bệnh viện Trung ương Huế năm 2021.

Phương pháp: Nghiên cứu mô tả cắt ngang, phân tích 447 báo cáo sự cố y khoa gửi về phòng Quản lý chất lượng - Bệnh viện Trung ương Huế trong thời gian từ 01/01/2021 đến 31/12/2021.

Kết quả: Sự cố được phát hiện nhiều nhất ở các phòng bệnh (87,5%) và được các nhân viên y tế khối lâm sàng thực hiện báo cáo nhiều nhất (92,6%). Thời điểm xảy ra sự cố y khoa nhiều nhất là buổi chiều với 47,9%. Có 90,8% sự cố y khoa xảy ra tác động trực tiếp đến người bệnh. Mức độ tổn thương trung bình và nặng chiếm tỷ lệ cao và tương đối như nhau (38,9% và 36,9%). Sự cố về nhiễm khuẩn bệnh viện chiếm tỷ lệ cao nhất với 70,0%.

Kết luận: Nhiễm khuẩn bệnh viện là nhóm sự cố y khoa chính xảy ra tại Bệnh viện Trung ương Huế. Không có sự cố y khoa nào nghiêm trọng xảy ra trong thời gian nghiên cứu.

ABSTRACT

AN OBSERVATIONAL STUDY OF MEDICAL INCIDENTS AT HUE CENTRAL HOSPITAL IN 2021

Background: Medical incidents are undesirable situations that occur in diagnosis, healthcare and treatment due to objective and subjective factors, which aren't due to the disease process or the patient's location affecting the health and life of the patient. This problem is one of the most worrying issues in providing safe healthcare services for patients/customers. This study aims to describe the characteristics of medical incidents occurring at Hue Central Hospital in 2021.

Methods: A cross-sectional descriptive study was conducted on 447 medical incidents which were reported to the Quality Management Department of Hue Central Hospital during the period from January 1, 2021 to December 31, 2021.

Results: Incidents were detected the most in-patient rooms (87,5%) and were reported the most by the staff of clinical departments (92,6%). The time when medical incidents occurred the most was in the afternoon with 47,9%. There were 90,8% of medical incidents that had a direct impact on the patient. Moderate and severe lesions accounted for a high and relatively similar rate (38.9% and 36.9%). Incidents of hospital-acquired infections showed the highest rate with 70.0%.

Conclusions: Hospital-acquired infections are the main group of medical incidents occurring at Hue Central Hospital. There were no serious medical incidents occurring during the study period.
Dẫn lưu đường mật qua da xuyên gan trong xử trí tắc mật ác tính: Kết quả bước đầu
Authors: Le Nguyen Pon
Published: April 2022

TÓM TẮT

Mục tiêu: Đánh giá tính an toàn và hiệu quả của kĩ thuật dẫn lưu đường mật qua da xuyên gan (PTBD) trong xử trí tắc mật ác tính.

Phương pháp: Nghiên cứu mô tả ngang có theo dõi trên 48 bệnh nhân tắc mật ác tính được dẫn lưu mật qua da xuyên gan (PTBD) tại bệnh viện Trường Đại học Y dược Huế từ 1/2019 đến 10/2021. Mô tả các đặc điểm kĩ thuật và chỉ định của PTBD. Đánh giá tính an toàn thông qua các biến chứng, tính hiệu quả thông qua sự thành công về mặt kĩ thuật và giảm bilirubin toàn phần (bilirubin TP).

Kết quả: Tuổi trung bình của nhóm nghiên cứu là 66,4 ± 13,3. Giá trị trung bình của bilirubin toàn phần là 235,25±129,87 (μmol/l). Tỷ lệ thành công về mặt thủ thuật là 100%, tỷ lệ đặt được dẫn lưu trong – ngoài là 37,5%, giảm bilirubin toàn phần đáng kể là 78,9%. Tổn thương gan đa ổ làm giảm hiệu quả hạ bilirubin. Tỷ lệ biến chứng nặng là 12,5% và biến chứng nhẹ là 18,8%, các biến chứng nặng đều liên quan đến nhiễm trùng.

Kết luận: PTBD là một kĩ thuật an toàn và hiệu quả trong cải thiện triệu chứng của tắc mật ác tính.

ABSTRACT

PERCUTANEOUS TRANSHEPATIC BILIARY DRAINAGE FOR MALIGNANT BILIARY OBSTRUCTION: A PRELIMINARY RESULT

Aim: to evaluate the safety and effectiveness of percutaneous transhepatic biliary drainage (PTBD) for malignant biliary obstruction.

Methods: A cross-sectional study was conducted on 48 patients with malignant biliary obstruction who underwent PTBD at Hue University of Medicine and Pharmacy Hospital from 1/2019 to 10/2021. Indications, technique, safety and effectiveness of PTBD were based on the Society of Interventional Radiology (SIR) guideline. Study endpoint was the successful placement of the drainage catheter within the biliary tract. A post PTBD reduction of total bilirubin level ≥20% was defined significant. Catheter position, configuration and side-hole modification were decided case-by-case based on cholangiographic findings and treatment purposes.

Results: The mean age was 66.4 ± 13.3 years. The mean total bilirubin level was 235.25±129.87 μmol/l. PTBD was indicated as a first-line modality in 89.6%, mostly for palliative purpose (89.6%); 10.4% in emergency setting. Technical success was 100%, 37.5% achieved internal-external drainage. Significant reduction in serum total bilirubin in 78.9% of cases. Multifocal liver lesions were associated with reduced drainage outcome. In-hospital major and minor complication rates were 12.5% and 18.8%, respectively. All major complications were infection-related.

Conclusions: PTBD is safe and effective for the management for malignant biliary obstruction.
Application of primary sutureless repair for obstructed total anomalous of pulmonary venous connection at the Vietnam National Children's Hospital
Authors: Nguyen Ly Thinh Truong
Published: April 2022

Objectives: This study evaluates the results of applying primary sutureless technique in surgical repair of total anomalous pulmonary venous connection at Children Heart Center, Vietnam National Children's Hospital.

Methods: A retrospective study was conducted to evaluate the short-term outcomes of primary sutureless repair for all patients diagnosed with obstructed total anomalous venous connection (TAPVC) from July 2015 to December 2016.

Results: There were 25 patients undergoing primary sutureless repair during the study period. The mean age and the mean weight are 77.00 ± 23.26 days and 3.93 ± 1.16 kg, respectively. There were 19/25 (76%) cases with preoperative respiratory failure with 14 cases (56%) requiring mechanical ventilation before surgery, of which 9 patients (36%) had life-threatening acute pulmonary edema from before emergency surgical repair. There were 17 cases admitted to the hospital with cardiogenic shock. Evaluation of transthoracic echocardiography showed 15 cases of supracardiac TAPVC, 5 cases of infracardiac TAPVC, 2 cases of intracardiac, 2 cases of mixed, and 1 case of partial TAPVC. The mean aortic cross-clamp time was 65.40 ± 23.34 minutes, the average cardiopulmonary bypass time was 119.72 ± 34.85 minutes, the mean surgery time was 200.04 ± 39.42 minutes. 9 cases underwent circulatory arrest and 7 cases underwent low-flow bypass during surgery. 3 patients died in the postoperative period, of which 2 from septic shock and multi-organ failure, 1 patient from respiratory failure after extubation due to laryngomalacia. The reoperation rate was 2/25 as a consequence of recurrent pulmonary vein stenosis.

Conclusions: The primary sutureless repair for obstructed anomalous pulmonary venous connection is safe and favorable. Long-term outcomes follow-up are essentially required.
Initial results of video-assisted thoracoscopic minimally invasive mitral valve replacement with fast tract cardiac anesthesia at Viet Duc University Hospital
Authors: Le Hong Quan
Published: April 2022

Background: Video-assisted thoracoscopic minimally invasive mitral valve replacement, associated with fast tract anesthesia and early extubation, was accepted in clinical practice. At Viet Duc University Hospital, we began to use this technique in January 2021. The purpose of this study is to evaluate the initial results.

Methods: This is a retrospective, descriptive study with a convenient sample size, including all acceptable patients from January to August 2021.

Results: There were 12 patients with 41.7% male and average age 53.8±6.3 (range 42-63). There was no hospital mortality. Cardio pulmonary bypass time and aortic cross clamp time were 108.0±23.8 minutes (range 80 – 157), 86.3±16.7 minutes (range 63 – 115) and 3.4±0.5 hours (range 3 – 4.8) relatively. Ventilation time, ICU length of stay and hospital stay were 23.3±8.3 minutes (range 11 - 42), 21.9±8.6 hours (range 15 – 48) and 14.7±6.3 days (range 10 – 16) relatively. Three patients had temporary agitation after surgery and there are no other complications.

Conclusion: A combination between video-assisted thoracoscopic minimally invasive mitral valve replacement and fast tract cardiac anesthesia was feasible and our initial results showed significantly reduce ventilation time and length of ICU stay in study group without serious complications.
« Regarder abstractivement les œuvres »
Authors: Hamon Philippe
Published: April 2022

Une réflexion proprement poéticienne semble avoir du mal à se constituer au xix e  siècle sur les brisées de l’esthétique et de la critique, et sur les ruines et le discrédit de l’ancienne rhétorique ; cela, paradoxalement, alors qu’un désir de « méthode » et de scientificité se met à hanter toutes les disciplines. Elle semble ne s’esquisser, çà et là, que dans les marges laissées par le primat des approches historiques de la littérature : dans la caricature, le pamphlet, le pastiche, les parodies de typologies des physiologies « comiques », les procès, la correspondance privée, le Journal, la préface, le brouillon.
« Je vous apprendrai une poétique toute nouvelle » : Balzac, une poétique de l’ironisation
Authors: Bierce Vincent
Published: April 2022

Comment, dans la société issue de la Révolution française et en proie à une instabilité axiologique fondamentale, représenter dans et par le roman les fluctuations du réel et interroger le devenir de l’individu moderne ? Tandis que dans le premier xix e  siècle le questionnement sur la crise du sens et la figurabilité de la désagrégation du réel se traduit massivement par la mélancolie, d’une part, et par l’idéal de transparence et de signification de l’esthétique « réaliste », d’autre part, la poétique qui préside à la création romanesque balzacienne constitue une originalité profonde et fondamentale : l’auteur de La Comédie humaine interroge en effet la lisibilité du monde moderne à partir de ce que nous proposons d’appeler une poétique romanesque de l’ironisation.
Le moment cybernétique du « Livre » de Mallarmé : une poétique de l’information
Authors: Wit Sébastien
Published: April 2022

À la fin de sa vie, Stéphane Mallarmé se consacre tout entier à la réalisation d’un « Livre » qui devait être son Grand Œuvre, à la fois littéraire et mystique. Habité du fantasme du livre-monde, le Poète aspire à la création d’un ouvrage capable d’être tous les livres à la fois. En vain : sa mort parachèvera l’inaccomplissement de ce projet. En 1957, Jacques Scherer publie pour la première fois les notes en vue du « Livre ». La dimension cosmologique de cette utopie esthétique inspire alors la théorie littéraire des années 1960-1970, et le « Livre » devient peu à peu un prototype cybernétique, un « paléo-ordinateur ». Cet article se propose de revenir sur ce moment cybernétique du « Livre » de Mallarmé afin de mieux cerner la manière dont il a été un jalon historique du tournant matériel de la littérature, et des bouleversements que ce dernier a induits quant à la poétique des textes.
« Relever l’esprit public en province ». Convergences polémiques entre George Sand et Claude Tillier
Authors: Saintes Laetitia
Published: April 2022

Fondé en septembre 1844 afin de « relever l’esprit public en province », L’Éclaireur de l’Indre permet à George Sand d’exprimer un discours polémique proche de celui de Claude Tillier, pamphlétaire du Nivernais, rédacteur dans deux périodiques républicains locaux. Résolument ancrés dans les débats idéologiques et politiques de leur temps, le geste polémique de Tillier comme celui de Sand donnent à penser sur la possibilité et les modalités d’une parole polémique sous le régime de Juillet. Aussi cette contribution entend-elle, en rapprochant leurs écrits, éclairer un aspect méconnu de l’œuvre de Sand et faire redécouvrir celle de Tillier.
Optimal clustering by merge-based branch-and-bound
Authors: Fränti Pasi , Virmajoki Olli
Published: April 2022

We present a method to construct optimal clustering via a sequence of merge steps. We formulate the merge-based clustering as a minimum redundancy search tree, and then search the optimal clustering by a branch-and-bound technique. Optimal clustering is found regardless of the objective function used. We also consider two suboptimal polynomial time variants based on the proposed branch-and-bound technique. However, all variants are slow and has merely theoretical interest. We discuss the reasons for the results.
Long, intermediate and short-term well-posedness of high precision shallow-water models with topography variations
Authors: Khorbatly Bashar
Published: April 2022

In the mathematical theory of water waves, this paper focuses on the hierarchy of higher order asymptotic models. The well-posedness of the medium amplitude extended Green-Naghdi model, as well as higher-ordered Boussinesq-Peregrine and Boussinesq models, is first demonstrated. Introducing a regularization term and various physical topography variations, we show that these models admit unique solutions by a standard energy estimate method in the "hyperbolic" space \begin{document}$ H^{s+2}( \mathbb R)^2 $\end{document}, \begin{document}$ s>3/2 $\end{document}, but on short/intermediate time scales with respect to amplitude and topography parameters of order \begin{document}$ \varepsilon^{-1/4} $\end{document}, \begin{document}$ \max(\sqrt{ \varepsilon}, \beta)^{-1} = \beta^{-1} $\end{document} and \begin{document}$ \varepsilon^{-1/2} $\end{document} respectively. Furthermore, we show that the extended Green-Naghdi system's long-term well-posedness is reachable on time scales of order \begin{document}$ \max( \varepsilon, \beta)^{-1} $\end{document}. The above three specified models, in particular, admit longer time existence of order \begin{document}$ \varepsilon^{-1} $\end{document}, \begin{document}$ \max( \varepsilon, \beta)^{-1} $\end{document}, and \begin{document}$ \varepsilon^{-1} $\end{document}, respectively.
Design of a hybrid wind-solar street lighting system to power LED lights on highway poles
Authors: Ali Nadwan Majeed , Ammari Handri
Published: April 2022

This is an experimental study that investigates the performance of a hybrid wind-solar street lighting system and its cost of energy. The site local design conditions of solar irradiation and wind velocity were employed in the design of the system components. HOMER software was also used to determine the Levelized Cost of Energy (LCOE) and energy performance indices, which provides an assessment of the system's economic feasibility. The hybrid power supply system comprised of an integrated two photovoltaic (PV) solar modules and a combined Banki-Darrieus wind turbines. The second PV module was used to extend the battery storage for longer runtime, and the Banki-Darrieus wind turbines were used also to boost the battery charge for times when there is wind but no sunshine, especially in winter and at night. The results indicated that the hybrid system proved to be operating successfully to supply power for a street LED light of 30 watts. A wind power of 113 W was reached for a maximum wind speed that was recorded in the year 2021 of 12.10 m/s. The efficiency of the combined Banki-Darrieus wind turbine is 56.64%. In addition, based on the HOMER optimization analysis of three scenarios, of which, using either a solar PV system or the combined wind turbines each alone, or using the hybrid wind-solar system. The software results showed that the hybrid wind-solar system is the most economically feasible case.
Computation of numerical solutions to variable order fractional differential equations by using non-orthogonal basis
Authors: Bushnaq Samia , Shah Kamal , Tahir Sana , Ansari Khursheed J. , Sarwar Muhammad , Abdeljawad Thabet
Published: April 2022

In this work, we present some numerical results about variable order fractional differential equations (VOFDEs). For the said numerical analysis, we use Bernstein polynomials (BPs) with non-orthogonal basis. The method we use does not need discretization and neither collocation. Hence omitting the said two operations sufficient memory and time can be saved. We establish operational matrices for variable order integration and differentiation which convert the consider problem to some algebraic type matrix equations. The obtained matrix equations are then solved by Matlab 13 to get the required numerical solution for the considered problem. Pertinent examples are provided along with graphical illustration and error analysis to validate the results. Further some theoretical results for time complexity are also discussed.
Transient left ventricular dysfunction after therapeutic pericardiocentesis - Takotsubo cardiomyopathy or pericardial decompression syndrome
Authors: Bhutani Jaikrit , Batra Aditya , Gupta Ashu , Gupta Anshul , Mahajan Kunal
Published: April 2022

We present a case of reversible left ventricular (LV) dysfunction with characteristic stress or "Takotsubo" cardiomyopathy (SCM) after therapeutic pericardiocentesis in a patient with tubercular pericardial effusion. SCM following pericardiocentesis is uncommon, as opposed to the well-defined entity, pericardial decompression syndrome (PDS). PDS is defined as a paradoxical deterioration of hemodynamics and development of severe biventricular dysfunction, cardiogenic shock, and pulmonary edema after uneventful, often large volume pericardiocentesis in patients of pericardial effusion.
Bioelectroremediation of hexadecane in electrical cells containing Aspergillus niger immobilized in alginate
Authors: Saavedra Jayson Baldera , Pérez Lisbet Judith Noriega , Cerna Claudio Eduardo Quiñones , Monzón José Alfredo Cruz , Butrón Fernando Javier Hurtado , Mantilla Mario Esparza
Published: April 2022

Bioelectroremediation (BER) uses electrical current to stimulate catabolism of environmental pollutants, such as petroleum spills. However, applying current to soil may have adverse effects on the microorganisms involved in petroleum degradation. We identify and evaluate the BER capabilities of a strain of Aspergillus niger obtained from petroleum-contaminated soil. Spores of this strain immobilized in alginate spheres (2 g) were mixed with 100 g of hexadecane-contaminated sandy loam soil and exposed to 5, 10, or 15 mA direct current in a 200 cm3 cell with copper electrodes. Soil hexadecane concentration was measured by gas chromatography. More than 94% of hexadecane was removed from the soil within 12 days for the currents tested, and the A. niger grew to 6 x106 CFU g-1 in 15 days at 10 mA current. The maximum hexadecane degradation was achieved using a 10-mA current for 20 days, but more than 99% of the hexadecane was removed by the fifth day. These results suggest that the use of spore-containing alginate beads promotes growth and petroleum biodegradation of A. niger exposed to electrical currents.

Keywords: Aspergillus, bioelectroremediation, hexadecane, petroleum, soil.
Indirect caffeine modeling in an urban river
Authors: Peixoto Luis Otávio Miranda , Marques Luana Mayumi Takahasi , Mizukawa Alinne , Azevedo Julio Cesar Rodrigues de
Published: April 2022

Caffeine is used worldwide as a chemical tracer to identify anthropic pressures on urban water resources. Nevertheless, its quantification demands great financial investments. This research created a model that would indirectly determine a range of possible caffeine concentrations along an urban river, without the need for extensive laboratory work. The model is based on Canonical Correlation Analysis (CCA), which can correlate two sets of different-sized independent and dependent variables in order to generate a single empirical equation. This equation takes as input the concentrations of ammonia nitrogen and orthophosphate, as well as the total population and the population inhabiting irregular housing areas. From the model’s results, it was possible to elaborate a spectrum of possible concentrations of caffeine along the Atuba River (Curitiba-Brazil). The tendency of water quality degradation of this river was also predicted. This model could become a useful preliminary analysis for water resource managers and researchers alike.

Keywords: caffeine, canonical correlation analysis, water quality modeling.
Comparing the Morphological Properties of Bambusa vulgaris (Bamboo) Culms across Three Ecological Zones in Ghana; Potential for Biofuel Production
Authors:   epartment of Forest Resources Technology, Faculty of Renewable Natural Resources, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana, Adu Sylvia , Antwi Kwaku , Adu George , Yeboah Joseph Appiah
Published: April 2022

Abstract-- Bamboo is considered as a feedstock for the production of biofuels in the form of heat, transport fuels, gas, and electricity. This study compares the morphological properties of bamboo (Bambusa vulgaris Schrad. ex J.C. Wendl. var, vulgaris) culms and their effects on biofuel production across three ecological zones in Ghana. Three clumps of bamboo were randomly selected and measured in each zone. Three (3) shoots, three (3) juvenile culms, five (5) matured culms and five (5) dead defects free (culms without splits) culm was extracted from three bamboo stands. All 48 samples were used to determine the morphological properties and their effect on biofuel. The clump sizes ranged from 512 to 622 cm. The biggest clump was recorded at the moist semideciduous (MSD) zone. However, the statistical result shows that clump sizes for the three zones were almost the same. The mean height of the bamboo culms varied from 10 to 14 m; internode distance from 35.36 to 40.17 mm. The mean culm diameter ranges from 7.95 to 9.51 mm and culm wall thickness from 9.31 to 13.36 mm. The mean culm tapered from the bottom to the top, however, some samples tapered from the middle portion to the top. Shorter internode distance and thicker culm wall thickness produced denser biomass feedstock with higher heating values. The selection of bamboo culms for the production of charcoal should be based on thicker culm wall thickness and shorter internode distance. Bamboo branches with a diameter less than 10mm, culms with a longer internode distance, and thinner walls less than 10 mm can be briquettes for charcoal. Mature and dead bamboo culms in any zone can be used for the production of biofuels. Keywords-- biofuel, biomass, bamboo culm, morphology, feedstock, clump size
Anti-Lift Assessment of Multi-Flap Motorcycle Winglet for Track Usage Via Wind Tunnel Test
Authors:   Department of Mechanical Engineering, INTI International University, Persiaran Perdana BBN, Putra Nilai, 71800 Nilai, Negeri Sembilan, Malaysia, Ma’arof M. I. N. , Kamarudin Nurfarah A. Z. , Chala Girma T. , Izmailov Timur
Published: April 2022

Abstract— In motorcycle racing it is important to travel at high speed. However, involuntary lift of the front wheel could occur at high speed of travelling. This results in the loss of traction, stability and control over the motorcycle. This undesired phenomenon could be minimized by adding downforce at the frontal section of the motorcycle. The aim of this study was to generate supplementary downforce via the integration of anti-lift winglet at the frontal section of the motorcycle. This study tested on the effects given by the variation on the numbers of multi-element flaps with respect to anti-lift force generated. The anti-lift winglet assisted the motorcyclist for greater control and stability during high speed of travelling by being planted onto the ground. It was observed that the highest downforce is generated by winglets with the highest number of multi-element flaps. Conclusively, the installation of the winglet on the motorcycle significantly improves control and stability during high speed of travelling by being planted onto the ground. For future studies, other parameters such as the angle of attack for the winglet and the general shape of the winglets could be examined. Keywords— Semi-active winglet, Downforce, Mechanism, Multi-element wing.
Drone Implementation in Precision Agriculture – A Survey
Authors:   3School of Electrical and Electronic Engineering, Universiti Sains Malaysia Engineering Campus, 14300 Nibong Tebal, Penang, Malaysia, Ghazali Mohamad Hazwan Mohd , Azmin Azwati , Rahiman Wan
Published: April 2022

Abstract— Drones have been widely applied in the precision agriculture sector in the past few years. Incorporating artificial intelligence (AI), sensors, microcontrollers, and the Internet of Things (IoT) into the drones can help overcome the challenges faced by the farmers, such as livestock monitoring, wide land area, crop spraying, and in-depth crop health analysis. In this paper, several drone applications in precision agriculture are discussed, including the hardware and techniques involved. In addition, commercial agricultural drones available in the market to date are presented. The publications trend regarding drone application in precision agriculture is also included and based on reviewing more than 50 articles, a quadcopter-type drone is the most used drone in this sector, and seed planting is the least explored drone application area. Keywords—camera, crop monitoring, drone, mapping, spraying system
Reduction of the Hyperspectral Images Dimensionality using a NewGenetic Algorithm Procedure
Authors:   Electronic Systems, Sensors, and Nanobiotechnologies (E2SN), ENSAM Mohammed V University Rabat, Morocco, Maria Merzouqi , Mehdi Agouzal , Ahmed Hammouch
Published: April 2022

Abstract— The evolution of hyperspectral sensors has allowed the combination of spatial and spectral resolutions, which has given birth to a new technology known by hyperspectral imaging (HSI). Thanks to its discriminate capacity of objects, it has served humanity in many fields such as mineralogy, medicine, agriculture. It has become of interest to researchers. Despite their advantages, its large hyperspectral dimensionality imposes several problems such as computation time, storage, and the risk of confusion in prediction during classification. Reducing its dimensionality is one of the solutions introduced to overcome this kind of constraint. In this work, we proposed a selection filter based on a genetic algorithm (GA) and its compound fitness function (CF) that is based on the calculation of several functions: the amount of information of the selected bands with the measurement of the information mutual, as well as the interband correlation with the Pearson coefficient, and the Jeffries - Matusita distance between the selected bands. The classifier retained in the process of the proposed method is SVM-RBF that was able to show its robustness in front of the KNN. Three HSI: SALINAS, INDIAN PINE, PAVIA were used to test the reliability of the proposed method on a variety of data. Other distances are used to compare the results which showed that the GA-CF-SVM method was able to achieve the objective with high classification accuracy in short computing time. The number of used bands has been reduced from 103 to 40 for Pavia with a classification accuracy of 95.18%.s Keywords— Hyperspectral image, Genetic Algorithm, mutual information, Correlation, Jeffries - Matusita distance, SVM-RBF
EGE BÖLGESİ İÇİN DİNAMİK MOD AYRIŞTIRMASI İLE KURAKLIK ANALİZİ
Authors: YÜKSEL Gamze , SÖKÜN Hakan
Published: April 2022

Küresel ısınma ve diğer insani faktörlerle dünya coğrafyasını tehdit eden en önemli afetlerden biri de kuraklıktır. Kuraklık, suda yaşayan canlılardan başlayarak tüm dünya üzerindeki canlı ekosistemini doğrudan/dolaylı olarak etkilemektedir. Ülkemizde en sık görülen doğal afetlerden biri olan kuraklığın en temel özelliği, zamanla ortaya çıkması ve büyük insan kitlelerini etkilemesidir. Kuraklığın zamana bağlı olarak ortaya çıkması, kuraklığı önceden tahmin edebilme imkanını doğurmaktadır. Kuraklık probleminin tanımlanabilmesi için kuraklık indeksleri kullanılmaktadır. Yağış, sıcaklık, nem gibi meteorolojik parametreleri kullanan bu indeksler ile kuraklık sınıflandırılabilmektedir. Bu çalışmada, Ege Bölgesi için son 13 yıla ait Standart Yağış İndeksi (SPI) verisi incelenmiş ve Dinamik Mod Ayrıştırması (DMA) yöntemi kullanılarak ileriye dönük kuraklık tahminlemesi yapılmıştır. DMA, temelinde Tekil Değer Ayrıştırması olan zamana ve konuma bağlı değişen zaman serileri üzerinde çalıştırılabilen bir makine öğrenmesi metodudur. Makale kapsamında üzerinde çalışılan veri seti, World Weather Online iklim veri portalından elde edilmiştir. Veri seti bir takım ön işlemeden geçirilerek DMA algoritması ile analiz edilmiştir. DMA yönteminin Ege Bölgesi için kuraklık tahminleme başarımı, gerçek değerlerle karşılaştırılmalı olarak sunulmuştur.
Principle Components of Trust in Ecommerce Platforms from the Consumer Perspective
Authors: Ngwawe Edwin Ouma , Abade Elisha Odira , Mburu Stephen Nganga
Published: April 2022

Improved ICT technologies have brought about massive online presence of users in the online space such as social media platforms as well as remote working tools. This has led to a massive mushrooming of online shops as they try to follow the changing behaviour of the customers. This has come about with an challenge of information overload since the customers have a myriad of alternatives at his disposal at the time of making a decision and indeed it is impractical for an average user to evaluate all the alternatives in a timely fashion, neither do some users know what to look at when evaluating an online vendor. This put the user at a risk of losing money due to potentially untrustworthy vendors masquerading as genuine shop owners online. In deed trust is a psychometric property which many at times is informed by past experience or social norms in a context aware fashion. In this study, we seek to identify the indicators of a trustworthy online vendor so the consumer can use these to estimate trustworthiness of an online vendor before committing to a purchase. We use focus group discussions and survey to uncover what majority of experienced shoppers consider before making a purchase online and share the indicators in order to help inexperienced shoppers get a footing without much exposure to risk, and also to help ecommerce platform developers and owners to align their services to the end user expectations.
Análisis multivariado con perspectiva de género en programas STEM ofertados por la Universidad de Sucre (Sede Puerta Roja)
Authors: Benítez Francia Elena Corena , Novoa Melissa Andrea Moreno , Tovar Andrea Carolina Menco , Ramos María Clareth Méndez , Morinson Melba Liliana Vertel
Published: April 2022

Teniendo en cuenta que para el trimestre comprendido entre septiembre y noviembre de 2020 la tasa de desempleo para las mujeres fue del 19.6% donde las mujeres jóvenes entre 14 a 28 años de edad corresponden al 46.4% según cifras del DANE (Departamento Administrativo Nacional de Estadística) así la diferencia con el género masculino sigue creciendo. Si bien en Colombia de acuerdo con las cifras del Ministerio de Educación en 2018 se graduaron de educación superior 56% mujeres y 43% hombres, la inscripción a carreras del área STEM es de 34.9% mujeres y 65% hombres lo que pone de manifiesto el hecho de seguir trabajando para erradicar la disparidad notoria de género. Debido a lo anterior, busca analizar desde una perspectiva de género los programas Stem ofertados por la Universidad de Sucre durante los años 2020 y 2021, para así de forma específica en primera instancia caracterizar a los estudiantes de los programas teniendo en cuenta factores socioeconómicos, educativos y nutricionales o hábitos saludables y en segunda medida determinar los factores incidentes en el rendimiento en las pruebas saber Icfes por género, las cuales son el requisito más importante para acceder a la Universidad de Sucre. Todo ello por medio de técnicas estadísticas univariados, bivariadas y multivariadas, haciendo uso del Software estadístico R.
Empleo de naves no tripuladas (DRON/RPAS/UAV) en el entorno de la Isla Decepción en el marco de la XXXI Campaña Antártica del Ejercito de Tierra
Authors: Antonio Donis Quintairos, , Jose Maria Prada Salmeron,
Published: April 2022

El Ejército de Tierra (ET) participa en la Campaña Antártica Española desde el año 1988, que es la participación militar en el extranjero más antigua actualmente en vigor. Esta misión militar [1] es, sin embargo, única tanto por la lejanía y las dificultades climatológicas/físicas que entraña como por la importancia de la colaboración del Ejército con la investigación científica. Todo ello convierte a la Antártida en uno de los laboratorios científicos más importantes del planeta y, por  tanto, en un lugar único para desarrollar proyectos y trabajos, bajo la supervisión del Tratado Antártico que implica la total protección del medio ambiente. Este laboratorio científico ha despertado el interés de la XXXI Campaña Antártica (17-18) en volar DRONES/RPAS por primera vez en dicho continente antártico por el Ejército de Tierra, con distintos fines y misiones. La estricta legislación, dentro del marco del Tratado Antártico y en España, dirigida por el CPE, está regulada por el “Protocolo del Comité Polar Español (CPE) para la operación de aeronaves pilotadas por control remoto (RPAS) y automatizadas (UAV) en la Antártida”. Fundamentalmente basada en las regulaciones de Agencia Estatal de Seguridad Aérea (AESA), es temporal e indica el procedimiento para poder realizar actividades aéreas en la Antártida y aplicada a aeronaves inferiores a 25 kg de peso.
BIBLIOGRAPHIC REVIEW ON CONGENITAL SYPHILIS
Authors: Wakim Ferla BR , Curcio Oliva de Paula Caico Bruno , Barros Fernanda Carolina , Marsura Caselli Victoria , Polubriaginof Claudia
Published: April 2022

Introduction: Sexually transmitted infections are a public health problem that has consequences in other areas of society. An example is congenital syphilis, where the agent Treponema pallidum is transmitted to the fetus via placenta, with a high death rate. Despite this, the diagnosis can be made during prenatal care, reinforcing its importance. Objective: To identify and deepen knowledge about congenital syphilis, emphasizing primary health care for prevention, diagnosis, and treatment. Materials and methods: Literature review on congenital syphilis based on scientific articles included in PubMed, Scielo and Public Health Articles. The following descriptors were used: “STI”, “syphilis”, “congenital syphilis”, “pregnancy”, “newborns”, “consequences”, “treatment” and “penicillin”. Results: Congenital syphilis is caused by the vertical transmission of bacterium during pregnancy or by the newborn’s contact with maternal lesions. Its pathogenicity depends on the host’s nutrition, environment, and immune response. Its diagnosis is made during pregnancy by treponemic and non-treponemic tests and treatment should be started as soon as possible, in the pregnant woman, in the partner and in the future newborn, interrupting the transmission chain and preventing new cases. Conclusion: There are many challenges for the ideal control of congenital syphilis, still with a high number of infant deaths and abortion.
Survey of Fog Architectures: Research Opportunities & Future Development
Authors: Sandeep Narayanrao Khandare  , Dr. Shrinivas P Deshpande
Published: April 2022

Abstract: In recent years use of IoT, smart devices and sensors has been increased to great extents which results in generation of large amount of heterogeneous data. This data need to be processed time effectively. The Cloud computing due to its centralized location and large distance from IoT and edge devices facing issues like congested network, high latency in service delivery, poor Quality of Service (QoS), increased load etc. and the situation becomes complicated while handling real time or latency sensitive applications. Fog computing is emerging paradigm to handle theses issues by extending cloud computing services like computing, storage and networking at the edge of network that is near IoT devices/data generator. This paper will overview and summarize various fog computing architectures,open research challenges.
Case Study of Repeat Offender with Jinn Possession
Authors:   Institute of the Malay World and Civilization, Universiti Kebangsaan Malaysia, Bangi, Malaysia, Rahman Hamidi Abdul
Published: April 2022

A case study on a male British Muslim repeat offender was presented. He had been involved in violent crimes since he was a teenager and had served several prison sentences. He had no recollection of committing the crimes and only knew of his violent actions from others. He was later diagnosed with bipolar disorder and was under medication. His condition improved briefly but relapsed soon after. His parents brought him to a jinn possession expert, where he was diagnosed with jinn possession using a newly developed jinn possession scale. The subject agreed to engage in therapy for jinn possession. He became aggressive with threatening behaviour during the third therapy session, confirming the case for jinn possession. A multi-psyche model explains how jinn possession can affect behavioural changes and the connection between jinn possession and mental disorders. Modern medication can be complemented with therapy for jinn possession to bring better therapeutic benefits.