Close Distance Research Articles

A First Look at Genetic Diversity of Metapenaeus ensis Populations in Tam Giang – Cau Hai Lagoon, Vietnam

This study investigates the genetic diversity and population structure of the greasyback shrimp, Metapenaeus ensis (De Haan, 1844), within the Tam Giang – Cau Hai lagoon, Vietnam, by analyzing mtCOI genes from 91 individuals collected across four populations in nine sampling locations. High genetic diversity was found, with 34 unique haplotypes and 38 genetic variations identified. Most genetic variation occurred within populations (AMOVA), suggesting high gene flow. Low and non-significant Fst values and close genetic distances confirmed minimal differentiation among populations. These findings provide the first insights into M. ensis population genetics in this lagoon, informing conservation and management efforts. Understanding genetic diversity is crucial for sustainable management and conservation of marine species. This research aids in understanding population resilience, potential impacts of overfishing, and may assist in developing sustainable harvest strategies of this economically important shrimp species.

Study on Roof Deformation and Failure Law of Close Distance Coal Seams Mining Based on Digital Image Correlation

Study on Roof Deformation and Failure Law of Close Distance Coal Seams Mining Based on Digital Image Correlation

Comparative genomic and transcriptome analyses of two Pectobacterium brasiliense strains revealed distinct virulence determinants and phenotypic features.

Potato soft rot caused by Pectobacterium spp. are devastating diseases of potato which cause severe economic losses worldwide. Pectobacterium brasiliense is considered as one of the most virulent species. However, the virulence mechanisms and pathogenicity factors of this strain have not been fully elucidated. Here, through pathogenicity screening, we identified two Pectobacterium brasiliense isolates, SM and DQ, with distinct pathogenicity levels. SM exhibits higher virulence compared to DQ in inducing aerial stem rot, blackleg and tuber soft rot. Our genomic and transcriptomic analyses revealed that SM encodes strain specific genes with regard to plant cell wall degradation and express higher level of genes associated with bacterial motility and secretion systems. Our plate assays verified higher pectinase, cellulase, and protease activities, as well as fast swimming and swarming motility in SM. Importantly, a unique endoglucanase S specific to SM was identified. Expression of this cellulase in DQ greatly enhances its virulence compared to wild type strain. Our study sheds light on possible determinants causing different pathogenicity of Pectobacterium brasiliense species with close evolutionary distance and provides new insight into the direction of genome evolution in response to host variation and environmental stimuli.

Database Management for the Arrangement and Management of Online Boarding Houses in the Archipelago Region

Teluk Mutiara District is one of the sub-districts in the Alor Island group, currently a sub-district that has the potential for quite rapid regional development. With the increasing prospects for development and activities in this region, more and more people are coming to work, try their luck, attend education and live in this region. The geographical location of Alor Regency with the Islands region makes people choose the alternative boarding house as a temporary residence. People experience problems when looking for a boarding house because they have to go around and ask acquaintances and friends about the availability of empty boarding rooms. Boarding house owners are also limited in promoting boarding houses, they only write information about the boarding house business in front of the house. This limited information means a system has been created that can register, search for and promote boarding house businesses according to needs quickly and precisely. The iterative method is used in developing systems because this method can accept changes in requirements from users if necessary. The system was successfully built with a boarding house and promotion data collection feature as well as a boarding house search feature based on location, facilities and closest distance

Genomic Analysis of Aedes aegypti in the Northern Chihuahuan Desert of Texas and Mexico.

Background: Aedes aegypti, is the primary vector of dengue, Chikungunya, Zika, and yellow fever viruses. Both natural and human-impacted landscapes have selective pressures on Ae. aegypti, resulting in strong genomic structure even within close geographical distances. Materials and Methods: We assess the genetic structure of this medically important mosquito species at the northern leading edge of their distribution in Southwestern USA. Ae. aegypti were collected during 2017 in the urban communities of El Paso and Sparks, Texas (USA) and in the city of Ciudad Juárez, Mexico. Results: Thousands of nuclear loci were sequenced across 260 captured Ae. aegypti. First, we recovered the genetic structure of Ae. aegypti following geography, with all four major collection communities being genetically distinct. Importantly, we found population structure and genetic diversity that suggest rapid expansion through active-short distance dispersals, with Anapra being the likely source for the others. Next, tests of selection recovered eight functional genes across six outliers: calmodulin with olfactory receptor function; the protein superfamily C-type lectin with function in mosquito immune system and development; and TATA box binding protein with function in gene regulation. Conclusion: Despite these populations being documented in the early 2000s, we find that selective pressures on specific genes have already occurred and likely facilitate Ae. aegypti range expansion.

Dispensation of outpatient hospital medicines by hospital only versus hospital-community pharmacies collaboration: a cross-sectional study and survey of patient's satisfaction.

To describe the experience of a dispensing model of outpatient hospital medicines (OHM) via collaboration of hospital and community pharmacies, and to explore patient satisfaction with the strategy as compared with the hospital pharmacy only service. Patient satisfaction is an important component of the quality of health care. A new model of dispensing OHM was conducted in the Outpatients Unit of the Service of Hospital Pharmacy of Hospital del Mar, in Barcelona, Spain. Participants were patients on stable chronic treatment with clinical or social fragility, immunocompromised patients, and those whose residence was located at a distance from the hospital that justified drug delivery through the community pharmacy. A cross sectional study was done using an ad hoc 14-item questionnaire collecting demographic data, duration of treatment, usual mode of collecting medication, and the degree of satisfaction regarding waiting time for the collection of medication, attention received by professionals, information received on treatment, and confidentiality. The study population included a total of 4,057 patients (66.8% men) with a mean age of 53 (15.5) years, of whom 1,286 responded, with a response rate of 31.7%. Variables significantly associated with response to the survey were age over 44 years, particularly the age segment of 55-64 years (odds ratio [OR] 2.51) and receiving OHM via the community pharmacy (OR 12.76). Patients in the community pharmacy group (n = 927) as compared with those in the hospital pharmacy group (n = 359) showed significantly higher percentages of 'satisfied' and 'very satisfied' (p < 0.001) in the waiting time for the collection of OHM (88.1% vs. 66%), attention received by professionals (92.5% vs. 86.1%), and information received on treatment (79.4% vs. 77.4%). In relation to confidentiality, results obtained were similar in both pharmacy settings. Dispensing OHM through the community pharmacy was a strategy associated with greater patient satisfaction as compared with OHM collection at the hospital pharmacy service, with greater accessibility, mainly due to close distance to the patient's home. The participation of community pharmacists could further optimize the care received by patients undergoing OHM treatment.

Abstract PO2-02-10: Predicting the feasibility of breast conserving surgery using pre-treatment standard of care DCE-MRI: a novel clinical decision support tool for breast cancer surgical planning

Abstract Background: The decision-making process regarding breast cancer treatment options, specifically breast conserving surgery (BCS) versus mastectomy, is a complex and sensitive matter that takes into account the patient's preferences and their eligibility for BCS. A range of anatomical factors, such as tumor size, breast size, and proximity of the tumor to the skin, can influence the surgeon's recommendation regarding BCS or mastectomy. While mastectomy may be the only viable option for patients with large tumors, those with smaller tumors often have the opportunity to collaboratively decide with their surgeon on the most appropriate approach to ensure oncologic success and minimize potential cosmetic deformity. To facilitate this decision-making process, we developed a tool capable of providing informed recommendations on BCS or mastectomy based on standard of care imaging patient data. By integrating these recommendation capabilities, we aim to enhance the decision-making process and improve patient outcomes in breast cancer treatment. Methods: To assist surgeons and patients in determining a patient’s eligibility for breast conserving surgery (BCS), we developed the BCS Feasibility Score. The BCS Feasibility Score is generated from a binary classifier machine learning model and is representative of the probability that a given patient could receive BCS. The score is based solely on the output from TumorSight Viz, a software platform that uses only pre-treatment T1-weighted DCE MRI and applies a suite of deep learning algorithms to segment the patient’s disease and the surrounding breast tissues. From the multi-tissue segmentation generated using TumorSight Viz, we extracted 25 spatial morphology features to use in the model development process. The training and testing sets were a subsample of a publicly available dataset (Saha, et al, 2018). We selected patients that received either BCS or mastectomy and had a viable T1-weighted DCE MRI. Bi-lateral cases were excluded. The total training/testing set consisted of n = 749 cases, 363 of which received mastectomy and 386 who received BCS. Before model training occurred, we split 20% of the sample to use as the test set. We then trained a random forest classifier across a range of pre-set hyper-parameters, using a total of 25 features as inputs, and using 5x cross-validation in the training set. We then assessed model performance in the testing set only. Results: In the test set, 76 cases received BCS versus 74 that received mastectomy. We successfully predicted BCS in 56 out of 76 cases (74%), and mastectomy in 46 out of 74 cases (62%). Overall, we observed an AUC = 0.76 and an F1 score = 0.66, indicating moderate to strong model performance. The most important features in the model, as measured by SHAP values, included the axis aligned tumor longest dimension (mm), the closest distance between the tumor and the nipple (mm), the volume of the tumor convex hull (mL; dilated uni-centrically), and the ratio of tumor convex hull volume to breast volume. We tested the model’s performance in a fully independent holdout validation set of 579 cases. Within this validation set, 335 patients received BCS versus 244 received mastectomy. We successfully predicted BCS in 254 out of 335 cases (76%), and mastectomy in 149 out of 244 cases (61%). Overall, we observed an AUC = 0.75 and an F1 score = 0.63. Validation set performance mirrored results observed in the test set, indicating strong generalizability. In the validation set, comparing patients who underwent BCS to those who underwent mastectomy, we observed significant differences across all four of the most predictive features. Conclusion: TumorSight Viz and the BCS Feasibility Score help empower both patients and clinicians with information and tools to facilitate surgical planning decisions. Citation Format: John Pfeiffer, Bradley Feiger, Anuja Antony, Joseph Peterson. Predicting the feasibility of breast conserving surgery using pre-treatment standard of care DCE-MRI: a novel clinical decision support tool for breast cancer surgical planning [abstract]. In: Proceedings of the 2023 San Antonio Breast Cancer Symposium; 2023 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2024;84(9 Suppl):Abstract nr PO2-02-10.

Analogías para asustar y tranquilizar: dos estudios sobre recuperación y evaluación de argumentos analógicos

In our daily lives we often resort to argumentation through analogies when we try to show others our position on the issue at hand. Two experiments that analyze the retrieval and evaluation of analogical arguments with different argumentative purposes are reported in this article. In Experiment 1, the structure and semantic distance of analogies retrieved by 109 university students were analyzed when different communication purposes were indicated. It was found that people recover analogies with complete structure (i.e. analogies with explicit inferences) and close semantic distance to a greater extent. In Experiment 2 it was inquired if the types of analogies recovered in the previous experiment are effective (i.e., persuasive) for the recipient. The data found show a significant difference in their persuasive efficacy in favor of the arguments in which complete analogies are used.

The impact of family doctor contract services on the utilization of and satisfaction with primary health care among Chinese residents: A cross-sectional study.

Family doctor contract service (FDCS) is a vital part of China's primary health care system. This study aims to explore whether contracting with FDCS affects residents' utilization of and satisfaction with primary health care. A structured questionnaire was employed to collect data in January 2022. The questionnaire mainly included the following three parts: the social-demographic characteristics, health-related information, and utilization of and satisfaction with primary health care. Propensity score matching (PSM) was used to adjust for social-demographic differences between participants who contracted with a family doctor and those who did not. For the matched population, we used the Chi-square test to examine the differences in the utilization of and satisfaction with primary health care between contracted and non-contracted participants. Moreover, multiple logistic regression and linear regression were used to explore the influencing factors of the utilization of and satisfaction with primary health care. A total of 10,850 people were investigated and 10,419 participants were incorporated into the data analysis. After matching, there were no significant differences in most of the matching variables between the contracted and non-contracted groups (P > 0.05). The utilization rate was significantly higher among the contracted population than of the non-contracted (96.3% vs 92.6%, P < 0.001). The quality of services (e.g., good service attitude, high medical level, and a trusted family doctor) was more likely to be cited as the main reasons for the contracted people to utilize primary health care than for the non-contracted. The contracted people were also significantly more satisfied than the non-contracted in all terms of satisfaction. Moreover, people who contracted with a family doctor were more likely to use primary health care with OR = 1.979 (95% CI, 1.511-2.593). The contracted people were more likely to utilize and be satisfied with primary health care than the non-contracted. In addition, the contracted people tended to use primary health care because of the quality of services rather than because of the close distance or short waiting time. Therefore, it is important to further promote the high quality of FDCS to ensure residents' sense of gain and improve their satisfaction.

Bentuk Pola Spasial Permukiman di Kecamatan Salahutu

Salahutu District is directly adjacent to Ambon City so that it has experienced rapid development due to the expansion of urban activities and is supported by various potentials such as ports, fisheries, trade and services and other potentials. This attracts residents to settle and can indirectly affect the distribution of settlements by forming certain patterns both clustered, random, and uniform. This study aims to identify spatial patterns of settlement distribution in Salahutu District. This study uses a quantitative approach with Nearest Neighbour Analysis analysis which aims to identify spatial patterns. The results showed that Salahutu District had most settlement distribution patterns grouping as many as 47 zones or 94% and the rest formed random patterns as many as 3 zones or 6%. The characteristics of residential zones with a clustering pattern have relatively close distances between settlements and high building density. While the characteristics of residential zones with random patterns have relatively long distances between settlements and lower building density. The existence of family ties that are still closely established causes settlements to form in groups so that it affects the maintenance of local identity of the community that is still maintained. The importance of the results of this study is to anticipate the development of settlements that are not well planned so that it can cause the addition of slums as bad areas in Salahutu District

Populist by a distance: a relational framework for unifying ideology, rhetoric, and leadership style in populism studies

ABSTRACT Theories of populism have been troubled by the problem of essentially contested definitions of its basic properties. It is difficult to distinguish populism from conventional political behavior. This produces the problem of ‘degreeism’, while other features of populism are expressed in relationships rather than as specific categories of attitudes and behaviors. These problems cannot be eliminated by redefining or excluding aspects of populism in favor of a more restrictive definition. We argue that, given that conceptual indeterminacy is inherent in populism, it is better conceptualized as a relational concept. The article articulates a new, relational conception of populist ideology, discourse/rhetoric, and leadership style in terms of relative distance from an implicit ‘center ground’. Populism is marked by position-taking of distance away from the center in policy (distal), a wide distance between people and elites and/or outsiders (distal), and close distance between leaders and followers (proximal). A general, relational model of populism is deduced in this form: distal – distal – proximal. Far from being an abstract claim, we illustrate how the relative distance framework offers descriptive and analytical tools for social scientists focused on populism.

Adjacent well casing damage caused by fluid pressure intrusion in multistage fracturing

Nowadays, the large cluster well factory production mode is widely applied, which means that multistage fracturing can cause casing damage not only to the construction well but also to the adjacent well. To explore the cause of casing deformation caused by fluid pressure intrusion in multistage fracturing, a three-dimensional model of multistage fracturing in two wells is established based on natural fractures. The new model has reached dimensions of 1500 m × 300 m × 100 m, essentially achieving a 1:1 scale modeling. In addition, on the basis of large-scale modeling, adjacent wells have been taken into consideration for the first time. The multistage fracturing construction is simulated through the Abaqus finite element model. Results indicate that the multistage fracturing construction of a well not only transforms the stratum near the well, but also the extended hydraulic fractures have a certain effect on the stratum of neighboring wells at a close distance, causing natural fractures near the neighboring wells to slip. In this study, the control variable method was used to evaluate different influencing factors, determine the relationship between influencing factors and adjacent casing deformation, and put forward optimization design suggestions, which provided a reference for preventing and controlling casing deformation caused by fluid pressure intrusion.

Greater distance between ablation lines reduces the arrhythmia recurrence rate after pulmonary vein isolation.

Pulmonary vein isolation (PVI) is a recommended strategy for rhythm control in atrial fibrillation (AF), but its success rate remains unsatisfactory. Continuous research is being conducted to explore new technologies and modifications to the existing ablation workflow in order to reduce the arrhythmia recurrence rate. This study aimed to determine the influence of the distance between ablation lines (DBL) on AF recurrence rate in patients undergoing their first PVI; and thus to optimize the procedure outcomes. This is a retrospective cohort study conducted at a tertiary care center in Poland. A total of 146 patients (median age, 62 years; women, 34.3%) referred for a first PVI for either paroxysmal (n = 103) or persistent (n = 43) AF were evaluated. The procedures were performed with the use of a very‑high‑power, short‑duration catheter (QDot MicroTM, Biosense Webster, Inc., Irvine, California, United States) or a conventional, ablation index-guided ThermoCool Smarttouch SF catheter (Biosense Webster, Inc.). Freedom from AF recurrence was used as a primary end point. The impact of DBL on the outcome of PVI, accounting for conventional risk factors, was evaluated. Greater distance between opposite circumferential PVI lines and its ratio to the transverse diameter of the left atrium (DLB/TD) were associated with a lower risk of AF recurrence (hazard ratio [HR], 0.966; 95% CI, 0.935-0.998 [per 1 mm]; P = 0.04 and HR, 0.968; 95% CI, 0.944-0.993 [per 1%]; P = 0.01, respectively). There was no correlation between DBL or DBL/TD ratio and the impedance level. Close distance between PVI lines contributes to AF recurrence; thus, increasing the DBL and ensuring a higher DBL/TD ratio may be an advantageous ablation strategy.

Elucidation of heavy metal content, phenolic profiles, and antioxidant activities of kale (Brassica oleracea L. var. acephala) and arugula (Brassica eruca L.) grown in urban gardens in Istanbul.

This study was conducted to evaluate the effect of two distances: close (0-10m) and far (60m) from the heavy traffic roadside, at three different cultivation sites (MS: Mevlanakapi-Silivrikapi, SB: Silivrikapi-Belgradkapi, and BY: Belgradkapi-Yedikule kapi) along the road line. First, the phenolic compounds, antioxidant activity, and physicochemical properties in kale and arugula vegetables were examined. Second, heavy metal concentrations in vegetables, soil, and irrigated water were investigated. In both vegetables, the highest total phenolic content was detected in samples obtained from far distance in SB site (3880.3mg/kg) for kale and in BY site (1459.9mg/kg) for arugula, whereas the lowest content was found at the close distance in MS site for both kale (448.5mg/kg) and arugula (586.4mg/kg). The antioxidant activity values [mg Trolox/kg (dw)] ranged from 366.74 to 586.10 and 2349.00 to 3757.4 for kale and from 520.00 to 945.60 and 3323.00 to 5814.70 for arugula in 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) and 2,2-diphenyl-1-picrylhydrazyl methods, respectively. The levels of Cd and Hg in kale and arugula and Fe content in arugula exceeded FAO/WHO permissible limits, making them unsafe for human consumption. Meanwhile, the Pb content in kale and arugula and Fe content in kale were observed to be within acceptable limits set by FAO/WHO. In the irrigated water, the Pb value was below the permissible limit, whereas the Cd value was above it and no Hg and Fe were detected. In the soil samples, the Pb and Fe values were below the limit, whereas the Cd and Hg values were higher.

Manipulating Single‐Molecule Exciplex TADF and Deep‐Blue RTP Through Non‐Covalent π–π Interaction in a Molecular Foldamer

AbstractAlthough the π–π stacking has been widely applied for constructing aggregated emitters in optoelectronics fields, the role of intramolecular non‐covalent π–π interactions has not been well studied. Here, a supramolecular foldermer M‐σ‐C, with the electron donor (D) and acceptor (A) units spatially separated with a non‐covalent bond at a close distance by methylene linker is designed and synthesized. This gives a face‐to‐face D/A stacking configuration with supramolecular π–π interactions. Temperature‐dependent nuclear magnetic resonance measurements and single crystal analyses confirm its folding configuration. In solutions, M‐σ‐C exhibits a single‐molecule exciplex thermally activated delayed fluorescence (TADF) property ascribing to the efficient intramolecular through‐space charge transfer (CT) process. While single‐molecule deep‐blue room temperature phosphorescence (RTP) with a long afterglow lifetime of 236 ms is observed in a nonpolar matrix, which represents the record lifetime among current 3CT‐character featured RTP. This work indicates that intramolecular non‐covalent interactions play an important role in manipulating high‐performance single‐molecule exciplex TADF and RTP, and provide a feasible molecular design strategy for supramolecular chemistry involving the development of optoelectronic materials.

Family-Friendly Policies on Job Stress mediated by Work-Family Conflict (Bank Jambi Central Office)

This study aims to identify and analyze the effect of Family-Friendly Policies on Job Stress with Work-Family Conflict as a Mediating Variable (Study at Bank Jambi Central Office). This type of research is quantitative research. The method used is the Structural Equation Model (SEM) method with the help of SmartPLS 4. The population of this study is all female permanent employees at Bank Jambi Central Office as many as 52 peoples. The sampling technique used is Non Probability Sampling with saturated sampling (census) so that the entire population is used as a sample of 52 peoples. The results of the study show that: 1. Family-friendly policies have a significant positive effect on work stress on female permanent employees at Bank Jambi Central Office. 2. Work-family conflict cannot mediate the role of family-friendly policies on stress on female permanent employees at Bank Jambi Central Office. Thus supervisors can fulfill family-leave polices in the form of granting permits or urgent leave (1-2 days) to fulfill their responsibilities as a mother to care for their child who is sick or also the company can provide facilities in the form of assistance with medical expenses. In addition, the Bank Jambi Central Office can facilitate employees in the form of providing Child Daycare (TPA) around the office to make it easier for employees to supervise children at a closer distance while completing office work.So that these female employees can balance life as family members, namely as a mother who gives attention and affection to her child and as an office employee who must complete her job responsibilities.

Short-term results of surgical treatment in large idiopathic macular hole cases.

To evaluate results of the surgical treatment for large stage (Stage 3 and 4) idiopathic macular hole cases with and without ILM flap technique. Sixty eyes of 60patients diagnosed with idiopathic macular hole (MH) were included in the study. Complete ophthalmologic examination and SD-OCT examination were performed in all eyes. MH stages, MH base diameter, height and closest distance were measured quantitatively. Postoperative and 3months visits were evaluated. The mean age of the cases was 65.0 ± 8.0 (range 30-84) years, there were 31 (51.7%) female and 29 (48.3%) male patients with a mean follow-up period of 18.1 ± 16.7 (range 3-63)months. The mean best corrected visual acuity recorded at preoperative and third month control visits were 0.89 ± 0.40(preoperative) logMAR, 0.82 ± 0.60(3month) logMAR (p < 0.05). The mean MH index was 0.48 ± 0.16, the closest hole distance was 517.86 ± 210.89µm and mean basal diameter of holes was 947.78 ± 361.90µm and the average height was 448.93 ± 79.80 microns. There was no statistically significant difference between anatomic results of macular hole surgery with (n = 22) and without (n = 38) flap in terms of hole closure (86.4% vs. 92.1% p > 0.05). In 90% (54 cases) of the cases, closure was observed after the first surgery. Two eyes that failed macular hole surgery were reoperated. In one of these eyes, anatomical success was obtained with macular hole massage and mechanical cytumulation. However, anatomical success could not be achieved in the other eye. CONCLUSıON: In the treatment of large macular holes, pars plana vitrectomy, internal limiting membrane peeling with/without flap and gas tamponade demonstrated high anatomical and functional success.

DAMPAK PENGGUNAAN GADGET TERHADAP KESEHATAN MATA DAN POSTUR TUBUH PADA ANAK USIA DINI

Childhood is a golden age or a very important period because children will get many experiences that can encourage their development and growth, and there is a critical time span where this child's development will benefit a lot. The use of gadgets that continues to grow has an impact on many things including eye health problems and posture in children. This research uses a qualitative method with a case study approach obtained from data collection techniques using observation methods on children with initials (A) and interviews with parents of children with initials (A). In addition, this study uses data collection techniques, namely literature studies, by collecting various reading sources, such as previous research from journals, articles or reading sources from books regarding the impact of gadget use on eye health and posture in children. The child with the initials (A) has experienced eye health problems since May 2023 due to exposure to gadget radiation and frequent use of gadgets for long periods of time and close distances. However, he did not experience problems in his posture. Various efforts have also been made by the child's parents in order to prevent excessive gadget use.Childhood is a golden age or a very important period because children will get a lot of experiences that can encourage their development and growth.

Co-simulation of giant magnetostrictive autonomous emergen-cy braking system for intelligent vehicles based on Prescan/Simulink /CarSim

The combination of giant magnetostrictive actuator (GMA) and autonomous Emergency brak-ing system (AEB) can achieve the lightweight body and fast braking of intelligent vehicle. In this essay, simulation scenarios are established in PreScan, AEB algorithm and GMA actuator are combined in simulink, vehicle dynamics model is provided by CarSim, and co-simulation analysis of CCRm, CCRs and CCRb working conditions is carried out. When AEB adopts TTC algorithm only, in the stationary vehicle scenario (CCRs) where the vehicle approaches the front at a certain speed, the relative distance between the two vehicles is between 1.86 and 2.85m until stopping. When the front vehicle is driving slowly and the ego vehicle is faster than the front (CCRm), the relative distance between the two vehicles until stopping is between 2.28 and 2.83m; When the ego vehicle is driving at the same speed as the front, the front vehicle suddenly braking (CCRb), and the relative distance between the two vehicles until stopping is 1.98~2.54m; The above scenarios can achieve effective collision avoidance, and the safety distance is within an effective and reasonable range. In the scenario of two vehicles following at the same speed and close distance, TTC algorithm fails. AEB adopts TTC algorithm and Seungwukmoonalgo-rithm for collaborative control to achieve effective collision avoidance. The co-simulation re-sults show that the AEB system can intervene in time and avoid collisions effectively under the above three working conditions, and the relative distance between the two vehicles until stop-ping is between 1.86 and 2.85m, which verifies the timeness and effectiveness of the braking of the giant magnetostrictive actuator when AEB algorithm intervenes, and significantly improves the active safety performance of the vehicle.

A Drone Based Image Dataset Generation Methodology for Single Image Super Resolution

The advancements in drone technologies, digital imaging, computer vision techniques, and the liberalized laws related to drone flying have opened up drone-based applications such as the delivery of supplies, search and rescue, aerial surveillance, and so on. The drones, especially the nano/micro/small drones, may be mounted with only low-resolution camera(s) due to their maximum takeoff weight limitations. The low-resolution images generated by the cameras, if used for landing, can result in faulty detection unless the photos are taken from a very close distance to the point of interest. Detection and recognition of the point(s) of interest as early as possible is required to ensure sufficient response time for safe maneuvering. Hence, the images are to be captured at greater heights or distances from the point(s) of interest, and obtaining the high-resolution images from the captured low-resolution images is crucial. The High Resolution (HR) and the Low Resolution (LR) image pairs for training super-resolution models in the works presented in literature are generated using two different cameras or the HR images are captured by the camera and LR images are generated by degrading the HR images. As both methods are not appropriate for small/micro/nano category drones, we propose a novel method based on Ground Sampling Distance (GSD) to capture the LR and HR images. In this paper, we have presented the designed methodology for the creation of a dataset using drone-mounted cameras covering a broad spectrum of views of the target(s) suitable for training and testing of the Single Image Super-Resolution (SISR) models. We also present a methodology for selecting an appropriate target for imaging that enables the visual quality assessment of the developed super-resolution model.