Miracle-dz/UniFAR-FTUs huggingface dataset:
Spectral and Structural Properties of High-Quality Reduced Graphene Oxide Produced via a Simple Approach Using Tetraethylenepentamine

A simple temperature-assisted solution interaction technique was used to functionalize and reduce graphene oxide (GO) using tetraethylenepentamine (TEPA) with less chemicals, low temperature, and without using other reducing agents. GO nanosheets, produced using a modified Hummers’ method, were functionalized using two different GO:TEPA ratios (1:5 and 1:10). The reduction of GO was evaluated and confirmed by different spectroscopic and microscopic techniques. The FTIR and XPS spectra revealed that most of the oxygenated groups of GO were reduced. The emergence of amide groups in the XPS survey of the rGO-TEPA samples confirmed the successful reaction of TEPA with the carboxyl groups on the edges of GO. The replacement of the oxygenated groups increased the carbon/oxygen (C/O) ratio of GO by approximately 60%, suggesting a good reduction degree. It was found that the I2D/ID+D′ ratio and the relative intensity of the D″ band clearly increased after the reduction reaction, suggesting that these bands are good estimators for the reduction degree of GO. The morphological structure of GO was also affected by the reaction with TEPA, which was confirmed by SEM and TEM images. The TEM images showed that the transparent GO sheets became denser and opaque after functionalization with TEPA, indicating an increase in the stacking level of the GO sheets. This was further confirmed by the XRD analysis, which showed a clear decrease in the d-spacing, caused by the removal of oxygenated groups during the reduction reaction.
Correlation of CT scan Chest Severity Score with Serum Ferritin in COVID-19 Disease: A Retrospective Study

Background: COVID-19 disease is due to SARS-CoV-2 Virus with its rapid progression causing severe and fatal complications like Pneumonia. CT scan chest and inflammatory biomarkers like serum ferritin, helpful in screening, clinical management and prevention of serious complications of the Covid-19 disease are to be investigated and assessed. Aims and Objectives: This study is aimed to assess the association between the CT Scan Chest severity score and the Serum Ferritin levels in COVID -19 disease in predicting clinical severity with categorization into different risk groups to identify patients at risk of fatal complications to ensure optimal resource allocation. Materials and Methods: This retrospective observational study in a Govt. Medical college attached Tertiary care hospital for COVID –19 disease in Andhra Pradesh from 1st to 31st October 2020 included 76 patients of Covid-19 disease of > 20 years of age admitted with laboratory confirmed RT PCR diagnosis of Covid – 19 disease. Data was collected from the hospital records of the patients on demography, radiological imaging of CT scan chest severity score and laboratory measurements of Serum Ferritin levels and tabulated with the results expressed as mean ± SD. The disease severity was classified as mild (1-8), moderate (9-15) and severe (16-25) based on CT scan chest Severity scoring. Then the association between CT scan chest severity score and serum ferritin levels was studied, assessed and correlated. Results: Study data of a total of 76 COVID –19 positive patients was analysed and summarized. 54 patients (71%) were Males and 22 patients (29 %) were Females. Mean age (Years) of the patients was 52 ±13.2 years with males and females as 53.11±13.45 and 50.18 ±11.71, respectively. Based on the 25 point CT scan chest severity score, 50 % (38 patients) were in the mild grade (1 -8) with a mean ±SD of 4.74±2.44, 43.42% (33 patients) were in the moderate grade (9 - 15) with a mean ±SD of 11.31 ± 2.06 and 6.58% (5 patients) were in the severe grade (16 -25) with a mean ±SD of 18.4 ± 3.29. The mean ±SD values of Serum Ferritin were 261.22±377.12ng/ml, 431.14 ±284.69ng/ml and 870.8±928.06ng/ml with mild, moderate and severe grade of CT chest severity score respectively. Statistically significant correlation was found between between the CT Chest Severity Score and Serum Ferritin levels. Conclusion: Serum ferritin levels were observed to be high in the CT scan chest positive group and so the serum ferritin levels measured at the time of admission predict radiological severity. This positive correlation between the CT Chest Severity Score and Serum Ferritin levels can predict clinical severity of Covid -19 disease with categorization into different risk groups helping in the clinical management, prevention of serious complications and disease outcome.
Parameter-Free Ordered Partial Match Alignment with Hidden State Time Warping

This paper investigates an ordered partial matching alignment problem, in which the goal is to align two sequences in the presence of potentially non-matching regions. We propose a novel parameter-free dynamic programming alignment method called hidden state time warping that allows an alignment path to switch between two different planes: a “visible” plane corresponding to matching sections and a “hidden” plane corresponding to non-matching sections. By defining two distinct planes, we can allow different types of time warping in each plane (e.g., imposing a maximum warping factor in matching regions while allowing completely unconstrained movements in non-matching regions). The resulting algorithm can determine the optimal continuous alignment path via dynamic programming, and the visible plane induces a (possibly) discontinuous alignment path containing matching regions. We show that this approach outperforms existing parameter-free methods on two different partial matching alignment problems involving speech and music.
PENERAPAN WATERFALL DALAM ANALISIS DAN PERANCANGAN SISTEM INFORMASI MANAJEMEN DOKUMEN SURAT MENYURAT PADA BANK BJB KANTOR CABANG BSD TANGERANG

Bank BJB merupakan salah satu lembaga perbankan pembangunan daerah di Indonesia yang cukup berkembang pesat dan sudah memiliki beberapa kantor cabang di berbagai daerah, salah satunya berada di BSD Tangerang. Pada sebuah perusahaan kegiatan komunikasi atau pertukaran informasi tidak bisa dilepaskan dari aktivitas surat-menyurat. Bank BJB kantor cabang BSD belum memiliki sistem pengelolaan dokumen surat yang terkomputerisasi. Seluruh kegiatan pencatatan data surat yang ada masih dilakukan secara manual yaitu dengan melakukan pencatatan pada buku. Hal ini kurang baik karena apabila buku tersebut hilang atau rusak maka data surat yang ada akan ikut hilang. Proses yang masih manual ini juga menyebabkan proses aliran surat masuk maupun surat keluar membutuhkan waktu yang lama sehingga apabila ada surat yang berjumlah banyak akan menyebabkan sulitnya mencari data surat yang sedang dibutuhkan. Dalam membantu dan memudahkan proses pengelolaan surat yang ada dibutuhkan sebuah sistem terkomputerisasi yang dapat digunakan oleh bagian operasional dalam mendukung pekerjaan tersebut. Dari permasalahan di atas, penulis membuat analisis dan perancangan sistem informasi manajemen dokumen suratmenyurat yang dapat berguna dalam membantu proses pengelolaan surat yang ada. Perancangan sistem ini dibuat dengan menggunakan metode pengembangan sistem Waterfall Strategy Sequentialkarena mudah penerapannya serta bisa menghasilkan sistem yang bagus karena memerlukan perencanaan yang matang serta langkah demi langkah yang harus dikerjakan dengan detil, dan juga menggunakan notasi Unified Modelling Language (UML).
Synthesis and Laser-Related Spectroscopy of Er:Y2O3 Optical Ceramics as a Gain Medium for In-Band-Pumped 1.6 µm Lasers

In this paper, Er:Y2O3 optical ceramics were fabricated and details of the synthesis were presented. The spectral–luminescent properties of Er3+:Y2O3 optical ceramics were investigated. The absorption and emission cross-section spectra were determined. The luminescence kinetics at near 1.6 µm was single exponential and the lifetime of erbium 4I13/2 energy level was determined. In the frame of the conventional Judd–Ofelt theory, the emission properties of the energy levels of erbium 4I13/2 and 4I11/2 involved in laser operation at near 1.6 µm were calculated. The gain coefficient curves for typical values of the relative population of the upper laser level 4I13/2 were presented. The composition and structure were studied using the SEM, XRD, FTIR spectroscopy, and X-ray computer tomography techniques.
Concurrent localization and mapping with sonar sensors and consideration of vehicle motions

Title of dissertation: CONCURRENT LOCALIZATION AND MAPPING WITH SONAR SENSORS AND CONSIDERATION OF VEHICLE MOTIONS Hesham Ismail, 2016 Dissertation directed by: Professor Balakumar Balachandran Department of Mechanical Engineering Simultaneous Localization and Mapping (SLAM) is a procedure used to determine the location of a mobile vehicle in an unknown environment, while constructing a map of the unknown environment at the same time. Mobile platforms, which make use of SLAM algorithms, have industrial applications in autonomous maintenance, such as the inspection of flaws and defects in oil pipelines and storage tanks. A typical SLAM consists of four main components, namely, experimental setup (data gathering), vehicle pose estimation, feature extraction, and filtering. Feature extraction is the process of realizing significant features from the unknown environment such as corners, edges, walls, and interior features. In this work, an original feature extraction algorithm specific to distance measurements obtained through SONAR sensor data is presented. This algorithm has been constructed by combining the SONAR Salient Feature Extraction Algorithm and the Triangulation Hough Based Fusion with point-in-polygon detection. The reconstructed maps obtained through simulations and experimental data with the fusion algorithm are compared to the maps obtained with existing feature extraction algorithms. Based on the results obtained, it is suggested that the proposed algorithm can be employed as an option for data obtained from SONAR sensors in environment, where other forms of sensing are not viable. The algorithm fusion for feature extraction requires the vehicle pose estimation as an input, which is obtained from a vehicle pose estimation model. For the vehicle pose estimation, the author uses sensor integration to estimate the pose of the mobile vehicle. Different combinations of these sensors are studied (e.g., encoder, gyroscope, or encoder and gyroscope). The different sensor fusion techniques for the pose estimation are experimentally studied and compared. The vehicle pose estimation model, which produces the least amount of error, is used to generate inputs for the feature extraction algorithm fusion. In the experimental studies, two different environmental configurations are used, one without interior features and another one with two interior features. Numerical and experimental findings are discussed. Finally, the SLAM algorithm is implemented along with the algorithms for feature extraction and vehicle pose estimation. Three different cases are experimentally studied, with the floor of the environment intentionally altered to induce slipping. Results obtained for implementations with and without SLAM are compared and discussed. The present work represents a step towards the realization of autonomous inspection platforms for performing concurrent localization and mapping in harsh environments. CONCURRENT LOCALIZATION AND MAPPING WITH SONAR SENSORS AND CONSIDERATION OF VEHICLE MOTIONS
Liquid Jet Blasting Using Ultra-High Frequency Supersonic Pulsed Air Jet

This paper reports an experimental study on a liquid injector assembly integrated with an ultra-high frequency pulsed air jet that operates at 21 kHz. The active air-blasting assembly steadily injects a liquid through four mi-cro-nozzles of 0.4 mm diameters each, positioned around a 1 mm nozzle through which the pulsed actuation jet flows out at supersonic velocity. High-frequency compressible air vortexes and shock waves generated by the injector atomize the liquid stream into finer droplets and distribute them to a larger area to improve mixing with the ambiance. The paper presents the design details and preliminary studies on the flow field characteristics of this novel injection scheme, which is a potential candidate for high-speed flow mixing and control applications.
Replication Control of Human Telomere G-Quadruplex DNA by G-Quadruplex Ligands Dependent on Solution Environment

The human telomere region is known to contain guanine-rich repeats and form a guanine-quadruplex (G4) structure. As telomeres play a role in the regulation of cancer progression, ligands that specifically bind and stabilize G4 have potential therapeutic applications. However, as the human telomere sequence can form G4 with various topologies due to direct interaction by ligands and indirect interaction by the solution environment, it is of great interest to study the topology-dependent control of replication by ligands. In the present study, a DNA replication assay of a template with a human telomere G4 sequence in the presence of various ligands was performed. Cyclic naphthalene diimides (cNDI1 and cNDI2) efficiently increased the replication stall of the template DNA at G4 with an anti-parallel topology. This inhibition was stability-dependent and topology-selective, as the replication of templates with hybrid or parallel G4 structures was not affected by the cNDI and cNDI2. Moreover, the G4 ligand fisetin repressed replication with selectivity for anti-parallel and hybrid G4 structures without stabilization. Finally, the method used, referred to as quantitative study of topology-dependent replication (QSTR), was adopted to evaluate the correlation between the replication kinetics and the stability of G4. Compared to previous results obtained using a modified human telomere sequence, the relationship between the stability of G4 and the effect on the topology-dependent replication varied. Our results suggest that native human telomere G4 is more flexible than the modified sequence for interacting with ligands. These findings indicate that the modification of the human telomeric sequence forces G4 to rigidly form a specific structure of G4, which can restrict the change in topology-dependent replication by some ligands.
The turbulent wake of a square prism with wavy faces

Aerodynamic effects, such as drag force and flow-induced vibration (FIV), on civil engineering structures can be minimized by optimally modifying the structure shape. This work investigates the turbulent wake of a square prism with its faces modified into a sinusoidal wave along the spanwise direction using three-dimensional large eddy simulation (LES) and particle image velocimetry (PIV) techniques at a Reynolds number ReDm = 16,50022,000, which is based on the nominal width (Dm) of the prism and free-stream velocity (U). Two arrangements are considered: (i) the top and bottom faces of the prism are shaped into the sinusoidal waves (termed as WSP-A), and (ii) the frontal and rear faces are modified into the sinusoidal waves (WSP-B). The sinusoidal waves have a wavelength of 6Dm and an amplitude of 0.15Dm. It has been found that the wavy faces lead to more three-dimensional free shear layers in the near wake, compared with that of a smooth square prism. As a result, the roll-up of shear layers is postponed. Furthermore, the near-wake vortical structures exhibit dominant periodic variations along the spanwise direction; the minimum (i.e., saddle) and maximum (i.e., node) crosssections of the modified prisms have narrow and wide wakes, respectively. The wake recirculation bubble of the modified prism is wider and longer, compared with its smooth counterpart, thus resulting in a significant drag reduction and fluctuating lift suppression (up to 7.8% and 78.2%, respectively, for the case of WSP-A). Multiple dominant frequencies of vortex shedding, which are distinct from that of the smooth prism, are detected in the near wake of the wavy prisms. The present study may shed light on the understanding of the underlying physical mechanisms of FIV control, in terms of passive modification of the bluff-body shape.
RANCANG BANGUN E-OFFICE ADMINISTRASI SURAT DI BAGIAN HUMAS UNIVERSITAS STIKUBANK SEMARANG

Abstraksi Ketertiban dan kelancaran merupakan faktor penting dalam kepengurusan administrasi tata usaha perkantoran.Tata usaha adalah segenap aktifitas menghimpun, mencatat, mengolah mengirim dan menyimpan keterangan-keterangan yang diperlukan dalam setiap organisasi. Salah satu tugas tata usaha dari pengertian diatas berkaitan dengan keterangan, surat menyurat dan warkat-warkat, oleh karena itu tata usaha sering disebut pekerjaan tulis menulis maka tercipta warkat yang kemudian terkumpul menjadi arsip. Bagian Humas merupakan salah satu bagian yang memiliki posisi penting dalam sebuah organisasi, terlebih adalah bagian Humas Universitas Stikubank (UNISBANK) Semarang yang mana bagian ini selalu berhubungan dengan pihak eksternal dan pihak internal. Dalam pelaksanaan tugas rutin, bidang humas tidak terlepas dari administrasi surat menyurat baik dengan pihak eksternal maupun pihak internal. Prosedur pengelolaan surat yang sampai saat ini masih manual, yaitu surat diterima dan surat keluar masih dicatat dalam bentuk buku manual dan arsip mengakibatkan proses administrasi menjadi kurang responsif. Hasil dari Sistem Informasi Rancang Bangun E-Office Administrasi Surat di Bagian Humas Universitas Stikubank Semarang yang dibuat dapat membantu mempercepat proses administrasi pengarsipan dalam hal penyimpanan data, pencarian data, pembenahan data dan rekapitulasi data. Kata Kunci : e-office, surat masuk surat kel u ar, admin is trasi
Quality of transitional care of children with chronic diseases: a cross-sectional study

Abstract Objective: To analyze which factors may be associated with the quality-of-care transition of children with chronic diseases from the hospital to their home. Method: A cross-sectional, quantitative study, carried out in two hospitals in Southern Brazil, from February to September 2019. Participants included 167 family members of children with chronic disease. Data collection took place through a demographic questionnaire, and the use of the Brazilian version of the Care Transitions Measure (CTM-15). Results: The average score for the quality of care transition was 90.1 (sd = 19.5) (0–100). Factor 1, “Health management preparation”, was the one with the highest self-perceived average, 92.3 (sd = 11.6), while Factor 4, “Care plan”, had the lowest average, 86.3 (sd = 21.3). The quality of care transition was higher for patients living in municipalities belonging to health regions other than the hospital’s. Conclusion: The quality of care transition for children with chronic diseases, perceived by the children’s family members, in the discharge process from the hospital to home, was considered high. Living in a health region other than the hospital’s region was associated with better perception of the quality of care transition.
Optimization and Fabrication of Multi-Level Microchannels for Long-Term Imaging of Bacterial Growth and Expansion

Bacteria are unicellular organisms whose length is usually around a few micrometers. Advances in microfabrication techniques have enabled the design and implementation of microdevices to confine and observe bacterial colony growth. Microstructures hosting the bacteria and microchannels for nutrient perfusion usually require separate microfabrication procedures due to different feature size requirements. This fact increases the complexity of device integration and assembly process. Furthermore, long-term imaging of bacterial dynamics over tens of hours requires stability in the microscope focusing mechanism to ensure less than one-micron drift in the focal axis. In this work, we design and fabricate an integrated multi-level, hydrodynamically-optimized microfluidic chip to study long-term Escherichia coli population dynamics in confined microchannels. Reliable long-term microscopy imaging and analysis has been limited by focus drifting and ghost effect, probably caused by the shear viscosity changes of aging microscopy immersion oil. By selecting a microscopy immersion oil with the most stable viscosity, we demonstrate successful captures of focally stable time-lapse bacterial images for ≥72 h. Our fabrication and imaging methodology should be applicable to other single-cell studies requiring long-term imaging.
Using 3 Assessment Tools to Measure Patient Health Literacy in Rhode Island at Federally Qualified Community Health Centers

ABSTRACT Background The link between limited health literacy (HL), an often forgotten social determinant of health, inadequate access to health care, and poor health outcomes demonstrates the need for better patient education. Understanding HL supports patient education on multiple levels. Purpose Our objective was to measure HL and its association with sociodemographic variables. Methods A cross-sectional study with 328 patients was completed in 2 health centers. Three instruments, the Brief HL tool (BRIEF), Short Assessment of HL Spanish and English (SAHL-S&E), and the All Aspects of HL Scale (AAHLS), were administered. Participants also reported sociodemographic characteristics and perceptions. Results Limited and marginal HL existed in 49% (BRIEF) and 20% (SAHL-S&E) of participants. Differences in HL were identified by race, ethnicity, and education (p-values < .05) for the BRIEF and SAHL-S&E. Limited functional and critical HL existed in 23% and 25% of participants (AAHLS). Ninety percent reported confidence accessing health information, and 33% and 41% perceived their health as being poor and good. Discussion Results provide evidence of limited HL and merit in assessing HL in multiple ways. Translation to Health Education Practice Measuring HL provides a background for designing multilevel patient education efforts, reducing health inequalities, and informing the healthcare workforce.
Understanding and Supporting Software Architectural Decisions

The architecture of a software system is the result of architectural decisions on various topics, such as frameworks, patterns, programming languages, or ways to decompose the software system. Such decisions and their rationales are a significant part of the architectural knowledge about a software system. Architectural knowledge about a software system tends to vaporize. For example, architects might forget the rationales of decisions, change jobs, or postpone indefinitely documenting decisions to avoid disrupting their design flow. Architectural knowledge vaporization has major practical consequences, such as drifting away from the initially intended architecture, and expensive evolution, due to the substantial needed effort to understand previous decisions and to avoid conflicts with them. The overall research problem addressed in this thesis is how to reduce architectural knowledge vaporization. The overall solution is to reduce architectural knowledge vaporization by documenting architectural decisions and their rationales. The contributions of this thesis at solving this problem can be grouped in three phases: understanding the state of practice and research, exploring new ideas, and proposing concrete approaches to reduce architectural knowledge vaporization. In the third phase, we contributed with user friendly, open-source tool support for the two approaches for making and documenting individual and group architectural decisions. Overall, the contributions of this thesis help practitioners reduce architectural knowledge vaporization. Furthermore, the contributions of this thesis help researchers understand various aspects of architectural decisions and architectural knowledge, so that researchers can propose approaches that satisfy the needs of practitioners.